U.S. patent application number 16/358140 was filed with the patent office on 2019-08-08 for display device and method for operating such a display device.
The applicant listed for this patent is NOVOMATIC AG. Invention is credited to Marek GAWEL, Alois HOMER.
Application Number | 20190246474 16/358140 |
Document ID | / |
Family ID | 54557366 |
Filed Date | 2019-08-08 |
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United States Patent
Application |
20190246474 |
Kind Code |
A1 |
HOMER; Alois ; et
al. |
August 8, 2019 |
DISPLAY DEVICE AND METHOD FOR OPERATING SUCH A DISPLAY DEVICE
Abstract
The present disclosure relates to a display device comprising at
least two display units as well as an illuminating device for
illuminating a transition area between the at least two display
units. The disclosure further relates to a method of operating such
a display device as well as an entertainment machine comprising
such a display device.
Inventors: |
HOMER; Alois;
(Gumpoldskirchen, AT) ; GAWEL; Marek;
(Gumpoldskirchen, AT) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
NOVOMATIC AG |
Gumpoldskirchen |
|
AT |
|
|
Family ID: |
54557366 |
Appl. No.: |
16/358140 |
Filed: |
March 19, 2019 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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15592054 |
May 10, 2017 |
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16358140 |
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PCT/EP2015/076342 |
Nov 11, 2015 |
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15592054 |
|
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
G01J 3/506 20130101;
G09G 3/02 20130101; A63F 13/25 20140902; G09G 2320/0666 20130101;
G09F 9/3026 20130101; F21K 9/69 20160801; F21Y 2115/10 20160801;
G09G 2320/0646 20130101; G09G 2300/026 20130101; G09G 3/32
20130101; H05B 45/20 20200101; G06F 1/1601 20130101; G09G 2352/00
20130101; G07F 17/3216 20130101; G09G 2310/0232 20130101; H05B
45/22 20200101; F21Y 2103/10 20160801; G06F 3/1446 20130101; Y02B
20/30 20130101; G09G 3/3413 20130101; G09G 2360/145 20130101; F21K
9/61 20160801; F21V 33/0052 20130101; H04N 9/74 20130101; G01J
3/0218 20130101; G07F 17/3211 20130101; G09G 5/006 20130101; G09G
2360/16 20130101; Y02B 20/341 20130101; G09G 2360/144 20130101 |
International
Class: |
H05B 33/08 20060101
H05B033/08; F21V 33/00 20060101 F21V033/00; G06F 1/16 20060101
G06F001/16; G07F 17/32 20060101 G07F017/32; G09G 3/34 20060101
G09G003/34; H04N 9/74 20060101 H04N009/74; F21K 9/61 20060101
F21K009/61; F21K 9/69 20060101 F21K009/69; G09G 3/32 20060101
G09G003/32; G09G 5/00 20060101 G09G005/00; A63F 13/25 20060101
A63F013/25; G01J 3/50 20060101 G01J003/50; G06F 3/14 20060101
G06F003/14; G01J 3/02 20060101 G01J003/02 |
Foreign Application Data
Date |
Code |
Application Number |
Nov 11, 2014 |
DE |
10 2014 016 643.0 |
Claims
1. A display device comprising; at least two display units; an
illuminating device being at least partially arranged in a
transition area between the at least two display units and
configured to illuminate the transition area between the at least
two display units; the illuminating device having a main emission
direction which is directed away from display surfaces of the
display units onto an intended observation point in front of the
display surfaces; at least one determining device configured to
determine a first color information from an image block of a first
one of the at least two display units and to determine a second
color information from an image block of a second one of the at
least two display units; and a color control device configured to
control the color and/or the color spectrum of the light emitted by
the illuminating device as a function of the first and second color
information; wherein the illuminating device is subdivided into a
plurality of light emitting elements, which are lined up along the
transition area between two adjacent display units, wherein the
light emitting elements can in each case be controlled separately
by the color control device; and wherein each of the light emitting
elements is assigned its own pair of image blocks, wherein the
first and second color information can be obtained from the
assigned pair of image blocks, as a function of which the
respective light emitting element can be controlled by the color
control device.
2. The display device of claim 1, wherein the illuminating device
has an emission optics configured to generate a beam which widens
in an emission direction, wherein the beam at least partially
covers edge areas, which face one another, of the at least two
display units, towards a front side of the display units.
3. The display device of claim 1, wherein the at least two display
units form a pre-assembable built-in module with the illuminating
device, which can be installed into a common device housing as a
pre-mounted unit.
4. The display device of claim 1, wherein the at least two display
units are inclined at an obtuse angle to one another.
5. The display device of claim 1, wherein at least one of the
display units has a uniaxially curved display surface.
6. The display device of claim 1, wherein the illuminating device
is contoured in a strip-shaped manner.
7. The display device of claim 1, wherein the illuminating device
has a plurality of punctiform light sources.
8. The display device of claim 7, wherein the light sources can be
separately controlled individually by the color control device in
such a way that the light intensity and/or light color of the light
sources can be adjusted individually.
9. The display device of claim 1, wherein the color control device
is configured for mixing the first and second color information
into a mixed color signal and the illuminating device is configured
to output a mixed color in accordance with the mixed color
signal.
10. The display device of claim 1, wherein a plurality of image
blocks is assigned to the determining device to determine the first
and second color information, wherein the determining device is
configured to evaluate a plurality of image blocks one after the
other.
11. The display device of claim 1, further comprising a plurality
of determining units, wherein at least one image block is assigned
to each determining unit and the color information can be
determined in a temporally parallel manner by the plurality of
determining units.
12. The display device of claim 1, wherein the illuminating device
comprises a first light emitting element, which can be controlled
by a first color signal, which was determined as a function of the
first color information, and comprises a second light emitting
element, which can be controlled by a second color signal, which
was determined as a function of the second color information.
13. The display device of claim 1, wherein the display device is
attached to an entertainment machine.
14. A method of operating a display device, wherein the display
device comprises at least two display units, and an illuminating
device being at least partially arranged in a transition area
between the at least two display units and for illuminating the
transition area between the at least two display units, the method
comprising: determining, by at least one determining device, a
first color information from at least one an image block of a first
one of the at least two display units and a second color
information from at least one image block of a second one of the at
least two display units; forming, as a function of the first and
second color information, at least one color signal; and
controlling, by a color control device based on the at least one
color signal, the illuminating device wherein the illuminating
device is subdivided into a plurality of light emitting elements,
which are lined up along the transition area between two adjacent
display units, wherein controlling the light emitting elements in
each case separately by the color control device; and assigning
each of the light emitting elements its own pair of image blocks,
wherein the first and second color information is obtained from the
assigned pair of image blocks, as a function of which the
respective light emitting element is controlled by the color
control device.
15. The method of claim 14, wherein the color signal is mixed from
the first and second color information and is used as a mixed color
signal for controlling a plurality of lighting components of the
illuminating device.
16. The method of claim 14, wherein the at least one color signal
is determined by use of a color table.
17. The method of claim 14, wherein the at least one color signal
is calculated by the color control device based on a calculation
rule from the first and second color information.
18. The method of claim 14, wherein the at least one determining
device determines a first color information and a second color
information, wherein the first and the second color information is
converted into a first color signal and into a second color signal,
wherein a first light emitting element of the illuminating device
is controlled by the first color signal and a second light emitting
element of the illuminating device is controlled by the second
color signal, so that the first light emitting element and the
second light emitting element in each case emit individually
colored light.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a continuation of U.S. application Ser.
No. 15/592,054, filed on May 10, 2017, which is a continuation
under 35 U.S.C. .sctn. 120 of PCT Application No.
PCT/EP2015/076342, filed Nov. 11, 2015, which claims priority to
German Application No. 10 2014 016 643.0, filed Nov. 11, 2014. The
entire contents of each of the aforementioned applications are
hereby incorporated by reference.
TECHNICAL FIELD
[0002] The present invention relates to a display device comprising
at least two display units as well as an illuminating device for
illuminating a transition area between the at least two display
units. The invention further relates to a method for operating such
a display device as well as an entertainment machine comprising
such a display device.
BACKGROUND ART
[0003] In the case of entertainment machines, such as, for example,
gaming devices, gambling terminals and other entertainment devices
or also in the case of large-surface display devices, such as
public viewing displays or conference room displays, it is
sometimes advantageous, to use a plurality of separately embodied
display units, which are arranged next to one another or on top of
one another, instead of using a single, large-area display unit. By
means of display units, which on principle have standard formats,
it is also possible through this to create display devices of other
formats, without having to use expensive custom products for this
purpose. On the other hand, a plurality of separate, independently
operable display units can also be advantageous, for example in the
case of entertainment machines, so as to be able to display
different image contents without extensive split screen control of
an individual screen, for example so as to be able to present a
game content on one display unit and additional information, such
as stakes, rules and the like or also a second game content--for
example an additional game--on another display unit.
[0004] The display units themselves can hereby in each case form
assemblies, which are independent per se, which form display
assemblies, which can be mounted or exchanged independently from
one another, respectively, and/or which have power supply units,
which are embodied independently from one another, and/or control
systems, which are embodied independently from one another, which
control the display elements, which are generated on the respective
display unit. In the context of the application at hand, a display
unit can in particular be a screen, wherein a screen, which forms a
display unit, can be embodied so as to be flat in terms of a common
flat screen or curved in terms of an electronic screen, which
simulates reels, for example.
[0005] In the context of the invention at hand, separate display
units are thus in particular independently functioning display
assemblies, which have display surfaces, which are visible or
perceivable, respectively, independently from one another and which
in each case have an independent spatially-physically defined
shape, which can for example be delimited by means of a frame or a
housing. The display fields of the separate display units may be
arranged next to one another so as to be offset at right angles to
the viewing direction and/or on top of one another and, if
applicable, also at a distance from one another, wherein the
display fields or display field or image sections, respectively, of
the separate display units, which are visible from the observation
point or device operating position, are preferably located outside
of one another, in particular in such a way that a display field,
which is visible from the device operating position or image
section of a display unit, respectively, is located outside of the
display field or image section, respectively, of the respective
other display unit.
[0006] In the case of such separate display units, however, the
illustrated image contents or the display surfaces, respectively,
can often not be placed edge-to-edge without a gap, but a
gap-shaped space remains between the displayable image contents or
the display surfaces, respectively, so that the division into
separate display units remains clearly visible to the observer and
that a harmonious transition between the image contents, which is
more pleasant for the visual perception, is not present between the
image contents, which may also lead to symptoms of fatigue for the
observer and for his eyes. Such a gap between the separate display
units substantially results from the fact that the separate display
units often have frames, which surround the actual display surface,
on which image contents can be displayed, all around, so that the
display surface does not reach all the way to the circumferential
delimitation of the display unit. Due to the fact that the display
units also have separate housings, the space required for the
housing walls also results in a certain spacing of the display
units or the display surfaces thereof, respectively.
[0007] In the case of gaming machines, it has already been proposed
to arrange the display units so as to be staggered one behind the
other, see, for example, WO 2009/033615, whereby the edge or border
area, respectively, of the rear screen is covered and is no longer
visible. However, the border area of the front screens remains as
sight barrier or spacing, respectively, between the display
surfaces.
[0008] In the case of television sets, it has already been proposed
to make the actual display surface appear to be bigger, in that
light sources are arranged on the borders of the screen, which
radiate onto a wall located behind the screen and which illuminate
this wall in color, so that the screen obtains a light enclosure in
the manner of a halo. This circumferential illumination is in
particular effective in the case of a wall mounting of flat
screens, because the light sources can be hidden behind the screen
borders, so that the observer cannot look directly into the light
sources. To intensify the visual enlarging effect of such an
illumination, the light color of the light emitted onto the wall is
thereby adapted to the screen display, i.e. the predominant color
in the border areas of the display surface of the screen, see WO
2008/142639 A1 and EP 1379082 B1. It is furthermore known from EP
1994801 to hereby not only consider the colors of predetermined
image blocks, which are displayed on the display surface, but to
also evaluate or weight them, respectively, differently, in order
to be able to more strongly adapt the color of the ambient lighting
to more important image blocks. In particular moving objects are
identified for this purpose in the screen display, in order to be
able to consider the color thereof differently for the ambient
lighting.
[0009] Due to the fact that not only one color is routinely
displayed in a certain image block of a screen, an average color
can be formed from the plurality of the displayed colors or a color
spectrum, which characterizes the image block, can be determined,
as is shown, for example, in DE 10 2007 004 834 A1. The light
spectra emitted by individual light sources of pixels,
respectively, are thereby captured and are tuned individually in
such a way that a resulting overall spectrum at least approximately
corresponds to a desired light spectrum and thus to a desired
color.
[0010] It is further known from WO 2007/113754 to illuminate the
environment of a screen not only in a diffusely colored manner, but
to thereby generate light patterns, which are adapted to the screen
display.
SUMMARY OF THE INVENTION
[0011] The present invention is based on the object of creating an
improved display device, an improved entertainment machine
comprising such a display device, as well as an improved method of
the above-mentioned type, which avoid disadvantages of the prior
art, and to further develop the latter in an advantageous manner.
In particular, a harmonious, visual transition, which is as smooth
as possible, it to be obtained between separate display units, in
order to make it possible to observe the separate display units, in
a manner, which is pleasing and fatigue-free, for the eye.
[0012] According to the invention, the mentioned object is solved
by means of a display device, an entertainment machine, as well as
a method as disclosed herein and in accordance with the claims.
Preferred embodiments of the invention are the subject matter of
the dependent claims.
[0013] It is thus proposed to examine the display surfaces of the
plurality of display units, in particular the border areas of the
display surfaces bordering the transition area between these
display units, with respect to the colors displayed there and to
obtain color information therefrom. By means of this color
information, the color of the emitted light of the illuminating
device, by means of which the transition area between the at least
two display units is illuminated, is controlled. By considering the
display surfaces, in particular the border areas, of both or of all
display units and of the image colors displayed there, the
transition area between the two or all display units can be
illuminated in color harmony with the bordering display surfaces.
In addition to the at least two display units and the illuminating
device, the display device according to the invention comprises at
least one determining device for determining a first color
information from an image block of a first one of the at least two
display units and for determining a second color information from
an image block of a second one of the at least two display units,
and further a color control device for controlling the color and/or
the color spectrum of the light emitted by the illuminating device
as a function of the first and second color information. Such an
image block of the first or second display unit can in particular
be a partial area of the display surface of the respective display
unit, which is defined with regard to the contour, preferably in
the vicinity of the border of the display unit, which extends
adjacent to a further bordering screen. An image block can
preferably be an at least approximately rectangular area of the
respective display unit in the vicinity of or bordering the outer
border of the respective display unit, in which area an image
and/or video signal can be displayed--in particular in pixel blocks
or points. In the simplest case, such an image block may encompass
the entire display surface of the respective display unit.
[0014] The color control device automatically controls the
illuminating device as a function of color information from both
display units. A harmonious, smooth transition between the at least
two display units can be reached through this, which optically
mitigates the separation between the display units or which
approximately eliminates the optical separation, respectively, so
that the eye of an observer can wander back and forth between the
display surfaces of the display units less erratically and thus in
a more fatigue-free manner. The color information from the two
display units is determined by at least one determining device. The
at least one determining device and the color control device can be
combined, for example functionally and/or physically, to form a
control unit or control device. The at least one determining device
and the color control device, however, can also be embodied as
separate units.
[0015] In particular, the color of the light emitted by the
illuminating device can be mixed from the predominant colors of the
image blocks bordering the transition area of the at least two
display units or from the color information obtained from the
mentioned image blocks, respectively. A mixed color, which can be
emitted by the illuminating device, can include color portions,
which correspond to the color information from the image block of
the above-mentioned first display unit, and can also include color
portions, which correspond to the color information from the image
block of the second display unit. The above-mentioned color control
device can hereby be set up to mix the first and second color
information to form a color signal, wherein the illuminating device
is embodied to deliver a mixed color in accordance with the color
signal or mixed color signal, respectively, generated by means of
mixing.
[0016] In the alternative or in addition, the color control device
can also determine more than only one color signal from the color
information determined from the image blocks of the different
display units, and can use the different color signals to control
different light emitting elements of the illuminating device, in
order to physically obtain a color mixture only on the plane of the
light emitted by the light emitting elements. More specifically, a
first color signal can be determined from the first color
information and a second color signal can be determined from the
second color information, wherein a first light emitting element of
the illuminating device is controlled by means of the first color
signal and a second light emitting element of the illuminating
device can be controlled by means of the second color signal, so
that individually colored light is in each case emitted by the
first light emitting element and by the second light emitting
element. Depending on the color information from the respective
assigned display unit, the light emitting elements thereby in
particular emit differently colored light, which then mixes into a
mixed color light.
[0017] In order to obtain an optically as seamless as possible
transition between the at least two separate display units by means
of the light emitted by the illuminating device, the illuminating
device can be arranged, in an advantageous further development of
the invention, at least partially in the transition area between
the at least two display units and can have a main emission
direction, which is directed away from the display units onto the
observer or an intended observation point, respectively, or which
is emitted parallel to a main emission direction of the display
units, respectively. In contrast to the known circumferential
illuminations of screens, the illuminating device thus illuminates
forward into an area in front of the front side of the display
units, which the display units face with their display surfaces,
and in which an observer stands or sits as intended. The
illuminating device thus does not have the impression of a
background illumination, but forms a foreground illumination.
[0018] The illuminating device can advantageously have an emission
optics for generating a beam, which widens in emission direction,
which beam advantageously covers edge areas, which face one
another, of the at least two display units, towards a front side of
the display units. The mentioned emission optics can for example
comprise one or a plurality of suitable lenses, which capture the
light emitted by at least one light source and emit it in the form
of a focused bundle. The mentioned at least one lens can thereby
provided in addition to the primary lens, which is common in the
case of LEDs and which is located directly on the LED element. As
an alternative or in addition to such a lens, the optical emission
system can also comprise at least one reflector, which captures the
light emitted by the at least one light source, and emits it to the
front side of the display units in the form of the mentioned beam.
The emission optics can for example furthermore also be embodied as
so-called diffusor, by means of which the light emitted by the
light source is scattered.
[0019] By covering the edge areas with the emitted light beam, the
observer of the display units at least no longer predominantly sees
the edge areas of the separate display units, but the emitted beam
of the illuminating device, so that the light emitted by the
illuminating device can create a harmonious transition between the
display units. The light beam thus builds a light bridge, so to
speak, between the display surfaces of adjacent display units and
hereby covers the transition area between the display units.
[0020] The at least one light source of the illuminating device may
hereby be arranged between the display units, in particular in a
gap between the spaced-apart borders or edges thereof,
respectively, whereby the emission optics (e.g. lens, lens
comprising light guide, diffusor, etc.) may also be arranged
between the display units, but may also be superimposed to the
border areas of the display units. In the alternative, the light
source itself can also be arranged in front of the border areas of
the display units; it can in particular be located directly above a
gap between the display units or can be superimposed to the
transition area between the display units.
[0021] On principle, the illuminating device can thereby comprise
different types of light sources, for example a rod-shaped
fluorescent tube or a narrow, elongated light strip. In the
alternative or in addition, the illuminating device may also
comprise a plurality of, in particular, punctiform light sources,
preferably in the form of LEDs or RGB emitters, which may be
arranged next to one another in one or several rows and/or in a
matrix-like arrangement.
[0022] As a whole, the arrangement of the light sources of the
illuminating device and/or the contour of the illuminating device
as a whole may be adapted to the transition area between the
display units, wherein a strip-shaped contouring of the
illuminating device can be provided in particular in the case of an
elongated, gap-shaped transition area between the display units.
For this purpose, provision can be made for example for one or a
plurality of rows of LEDs. The mentioned LEDs or the punctiform
light sources embodied in a different way, respectively, can for
example be located directly on a printed circuit board for
controlling the light sources.
[0023] Advantageously, the mentioned light sources may hereby be
controlled individually or in subgroups by the control device, in
particular in such a way that the light intensity of the light
sources can be adjusted individually or in groups, respectively. By
means of such a separate controllability of the light sources, the
red light proportion may be increased for example, in that the
light sources, which emit red, are powered up in their power output
or in their light intensity, respectively. For example the
blue-light proportion can be reduced accordingly, in that the blue
light-emitting light sources are dimmed or in that their light
intensity is brought down, respectively.
[0024] When using a plurality of light sources, a specific color
distribution can also be provided to the emitted beam with respect
to its coloring, for example to the effect that the emitted beam
dos not evenly emit orange-colored light, when a transition between
a yellowish image block on the first display unit to a reddish
image block on the second display unit is to be created, but the
beam to the display unit, the border-side image block of which
includes yellowish light, can include more yellow light and can
emit more red light towards the second display, the border-side
image block of which includes more reddish light. Such a color
distribution in the beam emitted by the illuminating device can be
obtained for example by means of a suitable embodiment of the
emission optics. Different emission directions or main emission
directions, respectively, can be assigned to the different light
sources, for example in such a way that an upper LED row radiates
slightly upwards and a lower LED row radiates slightly downwards,
in order to be able to assign a light color more to a lower display
unit and to assign another light color more to an upper display
unit. It goes without saying that further LED rows can also be
provided hereby, which have overlapping main emission directions.
In the alternative or in addition, the above-mentioned lower and
upper rows--in the case of a different arrangement--or other light
source groups may irradiate overlapping beam segments in spite of
their different main emission directions, in order to obtain a
mixing of the colors and a harmonious transition.
[0025] In further development of the invention, provision can be
made for the illuminating device to be subdivided into a plurality
of light emitting elements, which are lined up along the transition
area between two adjacent display units and which may each be
controlled separately. The light emitting elements may hereby in
each case be assigned their own pair of image blocks. The first and
second color information, as a function of which the respective
light emitting element can be controlled by the color control
device, may in each case be obtained individually from this pair of
image blocks. The color or the color spectrum of a respective light
emitting element is not controlled according to the average color
or the color spectrum, respectively, of all of the border areas of
the bordering display units, or, e.g., of the entire display
surface of the display units, but only by means of the predominant
color or color spectrum, respectively, of an image block pair,
which is located directly in the vicinity of the respective light
emitting element. In other words, a middle-central light emitting
element for example only displays or reproduces, respectively, the
colors of the middle-central image blocks, while image blocks on
the right and left borders next to the middle-central lighting
image blocks are not considered in response to the color control of
the middle-central light emitting elements or are at least weighted
less strongly.
[0026] To allow for a simple mounting of the display device, the
mentioned at least two display units may form a pre-assemblable
built-in module with the illuminating device, which, as such or as
pre-assemblable unit, respectively, may be installed into a common
device housing or may be attached to a common wall holder or a
common floor stand. In particular, the two display units, together
with the illuminating device, which is provided in the transition
area between the two separate display units, may be pre-mounted to
form a dimensionally stable assembly, which is then inserted into
the device housing or mounted to the wall holder or floor stand,
respectively.
[0027] The mentioned display units may hereby be embodied in
different ways and may be positioned relative to one another in
different ways. Advantageously, for example at least two display
units may be inclined relative to one another at an obtuse angle,
in particular in such a way that the display surfaces of the
display units, which face a predetermined observer position, have
an angle of less than 180.degree. to one another.
[0028] The mentioned display units can thereby comprise display
surfaces, which are embodied in a substantially flat manner. In the
alternative, however, the display units may preferably also have
uniaxially curved display surfaces.
[0029] In the case of a flat embodiment of the display surfaces,
the display units may also be arranged parallel to one another or
in a common plane, respectively. In the area of their bordering
border areas, the display units may advantageously be arranged at
the same distance from a predetermined observer position, i.e.
approximately with the same depth in the device housing or on a
holder, respectively.
[0030] The mentioned display units may thereby be embodies as
screen units, in particular as flat screen, for example in the form
of a TFT or LCD screen.
[0031] On principle, the open or closed-loop control of the color
or of the color spectrum, respectively, of the emitted light of the
illuminating device can thereby be embodied in various ways.
According to an advantageous further development of the invention,
the at least one determining device, which initially consecutively
obtains the first color information from an image block of the
first display unit and temporarily stores it, if applicable, and
then obtains the second color information from an image block of
the second display unit and temporarily stores it, if applicable,
in turn, can be assigned to the image blocks of the plurality of
display units together. The determination of the color information
from the plurality of display units may hereby be repeated
cyclically so as to alternate, or, in the case of more than two
display units, can take place consecutively in turn or cyclically
in series, respectively, so to speak.
[0032] As an alternative to such a common determining device, which
is assigned to a plurality of display units, provision can also be
made for a plurality of determining devices for determining the
color information, which obtain or determine, respectively, the
color information from the image blocks of the different display
units in a temporally parallel and/or temporally overlapping or
also in a temporally offset manner. The color information obtained
from the plurality of determining devices can hereby be supplied to
the color control device in a temporally parallel and/or temporally
overlapping or also in a temporally offset manner, in order to
generate the color signal for controlling the illuminating device
from the color information.
[0033] In particular in the color control device, the color signal
for controlling the illuminating device can in particular be mixed
together from the first and second and, if applicable, further
color information of the image blocks of the first and second and,
if applicable, further display units to form the color signal or a
mixed color signal, respectively. The color signal or the mixed
color signal, respectively, can hereby for example be mixed
together mathematically by observing at least one predetermined
calculation rule. For example, color information, which is present
as RGB information, may be added and averaged by color. In the case
of two display units, in which an image block is analyzed in each
case, for example a first red portion from the image block of the
first display unit and a red light portion from the image block of
the second display unit may be added together and may be divided by
two, thus (R1+R2)/2, wherein the procedure is the same for the
green light and blue light portions or information, respectively,
thus (G1+G2)/2 and (B1+B2)/2, so that new RGB information may be
determined from the averaged color parameters. In the alternative
or in addition, light spectra may be captured and combined with one
another, as is shown for example by DE 10 2007 004 834 A1, in order
to obtain a desired resulting light spectrum.
[0034] The color signal mixed or averaged in this way,
respectively, can then be used by the color control device to
control the illuminating device or the light sources thereof,
respectively. These light sources may then emit a corresponding
light as a function of the obtained color signal.
[0035] In the alternative, the color signal for controlling the
illuminating device in particular by means of the mixing
functionality of the color control device may also be determined
with the help of at least one color table. A matching mixed color,
which is then used for the color signal or mixed color signal,
respectively, to control the illuminating device, may then be
deduced from the color table, for example by means of the color
information of the image blocks of the first and second and, if
applicable, further display units.
[0036] In the alternative or in addition to a mixing of the
determined color information of the separate display units in terms
of control or mathematically, respectively, to form a mixed color
signal or a deduction of the mixed color signal with the help of at
least one color table, which is then used for controlling all or
some light sources, the mixing of the color information may
physically also first take place at the stage of the light sources
or of the light emitted thereby, respectively. As a further
development of the invention, the first color information
determined for a first display unit may be converted and used by
the color control device into a color signal or signal for
triggering a first light source or a first subgroup of light
sources. The mentioned color control device may convert the second
color information from the second display unit into a second color
signal or color control signal, respectively, by means of which a
further light source or a further subgroup of light sources is
controlled. The color control device accordingly controls different
light sources or different subgroups of light sources,
respectively, with different color signals, which color signals in
each case correspond to different color information. The mixing
then takes place by mixing the light emitted by the different light
sources or different subgroups of light sources, respectively. If
the color information yellow, for example, is obtained from the
first display unit, a first subgroup of light sources is
controlled, in order to emit yellow light. If red is determined as
color information for the second display unit, a second subgroup of
light sources with a red color signal is controlled, in order to
emit reddish light. The emitted yellow and the emitted reddish
light then mix into orange light. By means of such a physical light
mixture, computing capacity or power, respectively, may be saved
and, if applicable, the above-mentioned mixing functionality in the
color control device may be completely dispensed with, so that a
quick conversion of an illumination, which is adapted to the image
display of the different display units, may be obtained by means of
simple control systems.
[0037] For transmitting the respective color information of the
respective image blocks of the at least two display units to the at
least one determining device, provision can ideally be made for an
optical waveguide. For example a light or light spectrum,
respectively, emitted by the respective image block, may be coupled
into this optical waveguide, and may be transmitted to the
determining device, e.g. with as little scattering losses as
possible. The transmitted light or light spectrum, respectively,
may then be converted accordingly in the determining device, for
example into color information and may then be evaluated
accordingly. A respective color information of the respective image
block, for example, may thus be determined systematically--ideally
with influencing other, e.g. adjacent image blocks, as little as
possible.
BRIEF DESCRIPTION OF DRAWINGS
[0038] FIG. 1 shows a schematic top view onto a display device
according to an advantageous embodiment of the invention, wherein
provision is made for two separate display units, which are
arranged on top of one another, in the form of screens, between
which provision is made for an illuminating device, which is
composed of a plurality of lighting components, as well as an
exemplary course of the method for operating the display
device;
[0039] FIG. 2a shows a side view of the display device from FIG. 1
in a different embodiment alternative in which the display device
comprises two display units, which are arranged at an obtuse angle
to one another;
[0040] FIG. 2b shows a side view of the display device from FIG. 1
in a different embodiment alternative in which the display device
comprises two display units, which are arranged in a common
plane;
[0041] FIGS. 2c and 2d show a side view of the display device from
FIG. 1 in a different embodiment alternative comprising two
separate display units, which have uniaxially curved display
surfaces;
[0042] FIG. 3a shows a sectional view of the illuminating device
and the arrangement thereof in the transition area between two
separate display units in a different embodiment alternative in
which the at least one light source of the illuminating device is
arranged in a gap between the border or edge sections,
respectively, of two separate display units, and an emission optics
protrudes from the gap in order to emit a beam, which widens;
[0043] FIG. 3b shows a sectional view of the illuminating device
and the arrangement thereof in the transition area between two
separate display units in a different embodiment alternative in
which the at least one light source is arranged on the front side
of two adjacent display units, and covers the gap or transition
area, respectively, between the two display units, and the emission
optics is also arranged so as to cover the border areas of the
display units;
[0044] FIG. 3c shows a sectional view of the illuminating device
and the arrangement thereof in the transition area between two
separate display units in a different embodiment alternative in
which the at least one light source is arranged in a gap between
the edge sections, and the emission optics is arranged so as to at
least partially cover the border areas of the display units;
[0045] FIG. 4a shows a schematic and exemplary illustration of the
course of the method for operating the display device in a
different embodiment alternative in which a common determining
device for determining the color information from image blocks of
the different display units is assigned to two separate display
units, and a determination of the color information takes place
sequentially;
[0046] FIG. 4b shows a schematic and exemplary illustration of the
course of the method for operating the display device in a
different embodiment alternative in which the two display units in
each case use separate determining devices for determining the
color information from a respective image block of the respective
display unit, and a determination of the color information takes
place in a temporally parallel or at least temporally overlapping
manner;
[0047] FIG. 4c shows a schematic and exemplary illustration of the
course of the method for operating the display device in a
different embodiment alternative in which a determining device for
determining the color information is assigned to each display unit,
and the color signals or color control signals, respectively,
obtained from the color information are used separately without
prior mathematical mixing or mixing in terms of control, for
controlling different light sources of subgroups of light sources
of the illuminating device, to obtain a mixture at the stage of the
emitted light;
[0048] FIG. 5 shows a schematic, partially cut side view of an
entertainment machine which has two display units, which are
arranged so as to be inclined at an obtuse angle to one another, in
the form of flat screens, between which provision is made for an
illuminating device of the type as shown in the preceding figures;
and
[0049] FIG. 6 shows a top view onto a display device comprising
four separate display units which are arranged on top of and next
to one another, in order to result in an overall rectangular
arrangement when put together, wherein light emitting elements of
the illuminating device, which also protrude into the square space
between the four display units in the core of the arrangement, are
arranged in each case in the gaps-shaped spaces between the
screens.
DETAILED DESCRIPTION
[0050] The invention will be explained in more detail below by
means of preferred exemplary embodiments and corresponding
drawings.
[0051] As shown in FIG. 1, the display device 100 may comprise two
separate, independent functional display units 110 and 120, which
can be embodied as screens, for example in the form of flat
screens, such as LCD screens or TFT screens. The two display units
110 and 120 are arranged adjacent to one another, so that the
border-side edges of the display units 110 and 120 extend parallel
to one another or back-to-back, respectively, and delimit a
strip-shaped gap between one another.
[0052] The illuminating device 130, which, as a whole, is embodied
in a strip-shaped manner or which can be adapted to the transition
area between the display units 110 and 120, respectively, is
arranged in this gap between the border-side edges or in the
transition area between the two display units 110 and 120,
respectively. In particular, the illuminating device 130 can at
least partially be positioned between the border-side edges of the
display units 110 and 120.
[0053] As is shown in FIG. 1, the illuminating device 130 can
comprise a plurality of light emitting elements 131, 132, 133, 134,
135 and 136, which, together, form the illuminating device 130 and
which can be arranged next to one another or in a row behind one
another, respectively. The mentioned light emitting elements 131 to
136 can in each case comprise at least one light source, for
example in the form of an LED or a RGB unit, i.e. a red-green-blue
light unit. In further development of the invention however, each
of the light emitting elements 131 to 136 can comprise a plurality
of punctiform light sources, which can be arranged in one or in a
plurality of rows in a matrix-shaped arrangement on a printed
circuit board or in another suitable manner.
[0054] The display device 100, which is illustrated in an exemplary
and schematic manner in FIG. 1, furthermore comprises at least one
determining device 141. A first color information from an image
block of the first display unit 110 as well as a second color
information from an image block of the second display unit 120 can
be determined with the help of the determining device 141. The
display device 100 furthermore has a color control device 142, by
means of which a color and/or a color spectrum of the light emitted
by the illuminating device 130 or by the individual light emitting
elements 131 to 136, respectively, can be scattered as a function
of the first and second color information. The at least one
determining device 141 and the color control device 142 can for
example be functionally combined to form a control unit 140 or can
be embodied as separate functional units.
[0055] As shown in FIGS. 2a, 2b, 2c and 2d, the display units 110,
120 can be positioned differently to one another and can even be
contoured differently. As is shown in FIG. 2a, two display units
210 and 220, which are embodied so as to be flat, can be arranged
at an obtuse angle to one another, so that the front sides of the
display units 210 and 220, which face an observation point 201,
draw an angle of less than 180.degree. to one another. For example,
an upper display unit 210 can be arranged substantially vertically,
while a lower display unit 220 can be arranged at an incline to the
vertical, in particular a lower border section can be tilted out
forwards towards the observer spot 201. In such an obtuse-angled
arrangement, the illuminating device 230 can be arranged in the
area of the bending axis between the two display units 210 and 220,
see FIG. 2a.
[0056] Such an obtuse-angled arrangement of the display units can
in particular be advantageous in order to integrate or install the
display device 100 into a device housing 550 of an entertainment
machine 500, as is shown in FIG. 5. In said FIG. 5, the two display
units are identified with 510 and 520, while the illuminating
device is identified with 530.
[0057] To facilitate the mounting of the display device 100, the
two display units 210 and 220 or 510 and 520, respectively, can be
combined together with the illuminating device 230 or 530,
respectively, to form a pre-assembled built-in module 200, see FIG.
2a, which forms a dimensionally stable assembly, which can be
handled as unit. The determining device 241 and the color control
device 242 can furthermore be part of the mentioned pre-assembled
built-in module 200--either as separate functional units (as
illustrated in FIG. 2a in an exemplary manner) or combined in a
control unit 240 or 540, respectively (as illustrated in FIG. 5 in
an exemplary manner).
[0058] As is shown in FIG. 2b, two flat display units 210 and 220
can also be arranged in a common plane, wherein the illuminating
device 230 can also be arranged in the transition area 202 between
the display units 210 and 220 here. It goes without saying,
however, that such a non-angled arrangement of the display units
210 and 220, together with the illuminating device 230, the
determining device 241 and the color control device 242 can be
combined to form a pre-mounted assembly 200, wherein the
determining device 241 and the color control device 241 can also be
functionally combined to form a control unit 240.
[0059] As shown in FIG. 2c or FIG. 2d, respectively, the display
units 210 and 220 can also have a non-flat embodiment, in
particular a curved contouring. The display units 210 and 220 can
thereby in particular have a uniaxially curved display surface 250
and 260, which can be curved concavely towards the observation
point 201, but which, if applicable, can also have a convex
contouring. As shown in FIG. 2c and FIG. 2d, the two display units
210 and 220 can be arranged relative to one another in such a way
that the curved display surfaces 250 and 260 are arranged relative
to one another in such a way that the curved display surfaces 250
and 260 continue one another harmoniously or border one another in
a steady, continuous manner, respectively, wherein, viewed together
in cross-section, the display surfaces 250 and 260 can have a
partially circular or partially elliptical or partially oval
contouring, see FIG. 2c and FIG. 2d.
[0060] The illuminating device 230 can be provided in the
transition area 202 between the two display units 210 and 220, and
can be controlled by the color control device 242, wherein a
combination to a pre-assembled built-in group 200 can also be
provided here. For a determination of the color information,
provision is made, in turn, for at least one determining device
241, which can be combined for example with the color control
device 242 to form a control unit 240.
[0061] As shown in FIGS. 3a, 3b, and 3c, the illuminating device
can be provided in different ways in the transition area 202
between the display units 310, 320. As shown in FIG. 3a, at least a
part of the illuminating device 330 can be arranged for example in
the above-mentioned gap 334 between the border-side edges of the
display units 310 and 320, wherein the mentioned border-side edges
can be formed by frame parts 317 and 327 of the mentioned display
units 310 and 320. The mentioned frame parts 317 and 327 can for
example circumferentially enclose the screen area of the display
units 310 and 320.
[0062] The light emitting element 331 shown in FIG. 3a can for
example correspond to one of the light emitting elements 131 to 136
shown in FIG. 1 and can comprise one or a plurality of light
sources. An emission optics 332, which captures the light emitted
by the at least one light source of the light emitting element 331
and forms it into a bundle 335, can also at least partially be
arranged between the display units 310 and 320, wherein the
mentioned emission optics 332 can for example have a lens and/or a
light guide or, e.g., can be embodied as diffusor. The beam 335
emitted by an emitting surface of the emission optics 332
advantageously has a main emission direction 336, which is directed
away from the front side of the display units 310 and 320 onto the
mentioned observation point 201 or which runs parallel to a main
emission direction of the display units 310 and 320, respectively.
The beam 335 thereby widens to the extent that, viewed from the
observation point 201, the beam 335 covers the border-side edges of
the display units 310 an 320, for example in the form of the frame
parts 317 and 327.
[0063] As shown in FIG. 3b, the illuminating device 330 including
the mentioned light emitting element 331 can also be superimposed
to the transition area or the gap 334, respectively, between the
display units 310 and 320, or can be arranged on the front side of
the mentioned display units 310 and 320, respectively. In this
case, only the connection 333 for the color control device for
controlling the illuminating device 330 can substantially be guided
through the transition area between the display units 310 and 320
of the rear side to the mentioned display units 310 and 320, see
FIG. 3b.
[0064] The illuminating device 330, which comprises the light
emitting element 331 (e.g. LED, RGB unit, etc.), is furthermore
illustrated in an exemplary manner in FIG. 3c. The illuminating
device 330 is thereby at least partially arranged in the transition
area or the gap 334, respectively, between the display units 310
and 320, wherein the emission optics 332, which catches the light
emitted by the at least one light source of the light emitting
element 331, and forms it into a beam 335, is at least partially
arranged between the display units 310 and 320 and which is at
least partially superimposed to the transition area 334 between the
display units 310 and 320, respectively, or on the border-side
edges, respectively, of frame parts 317 and 327 of the mentioned
display units 310 and 320. As shown in FIG. 3c, the illuminating
device 330 furthermore comprises at least two optical waveguides
337, one of which catches the color information output by the
respective image blocks 111 to 116 and 121 to 126 of the display
units 310 and 320 and is transmitted to at least one determining
device 342, 343. The optical waveguides 337 are for example
embodied in such a way that they can in a targeted manner transmit
a color information of the respective image block 111 to 116 or 121
to 126, respectively, to which the respective optical waveguide 337
is assigned. The color information (e.g. light or light spectrum,
respectively, emitted by the respective image block 111 to 116 or
121 to 126, respectively) can be converted accordingly and
evaluated in the determining device 341, 343. The determined color
information is then transmitted to a color control device 342 and
is used for a control of the light emitting element 331--see FIG.
3c.
[0065] As is shown in FIG. 6, the display device 100 can also
comprise more than two display units, for example the fourth
display units 611, 612, 613 and 614 illustrated in FIG. 6, which
can be positioned on top of one another and next to one another in
pairs, so that the display device 100 as a whole has a rectangular
contouring.
[0066] A substantially cross-shaped gap, in which illuminating
devices 621, 622, 623 and 624 can be provided, in turn, in order to
harmonize the transitions of the image illustrations on the display
units 611 to 614, remains between the four display units 611 to
614. The mentioned illuminating devices 621 to 624 can thereby in
each case be embodied in a bar-shaped or strip-shaped manner,
respectively, or can be adapted to the transition area,
respectively, or the gap, respectively, between the display units
611 and 614. The mentioned illuminating devices 621 to 624 can
hereby also fill or cover, respectively, the central area of the
cross-shaped gap, wherein two illuminating devices 622 and 624 can
protrude into the central area edge-to-edge here. In the
alternative, it would also be possible for all four illuminating
devices 621 to 624 to fill this central area, for example by means
of triangular end contours.
[0067] As shown in FIG. 6, provision can in each case be made for
at least one determining device 631, 641, 651 and 661 for the
illuminating devices 621 to 624 for determining the respective
color information as well as for a color control device 632, 642,
652 and 662 for controlling the color of the color spectrum,
respectively, of the respective illuminating devices 621 to 624,
respectively. These determining devices 631, 641, 651 and 661 or
the color control devices 632, 642, 652 and 662, respectively, can
in turn be embodied as separate functional units and can be
assigned to the respective illuminating devices 621 to 624 or, as
illustrated in FIG. 6, can be combined to form control units 630,
640, 650 and 660. An illuminating device 621 to 624 can then for
example in each case be controlled by the respective assigned
control unit 630, 640, 650, 660, which in each case communicates
with the corresponding display units 611 to 614, to which the
respective illuminating device 621 to 624 is assigned or between
the transition area of which the respective illuminating device 621
to 624 extends, respectively.
[0068] Returning to FIG. 1, the mentioned color control device 142,
which, e.g. together with the at least one determining device 141,
can form a control unit 140, can control each of the light emitting
elements 131 to 136 of the illuminating device 130 individually,
i.e. separately and independently from the other lighting
components, wherein, if applicable, a control in groups can also be
provided. The color and/or the color spectrum of the light, which
is emitted by the respective light emitting element 131 to 136, is
thereby determined by means of the proposed method for operating
the display device 100. The color control device 142 thereby
considers color information, of which the colors of the image
displays on the display units 110 and 120 are considered.
[0069] More specifically, color information, which is determined
from image blocks 111 and 121, is considered for controlling a
respective light emitting element 131. These image blocks 111 and
121 extend on the border areas of the display surfaces of the
display units 110 and 120 and border the respective light emitting
element 131, see FIG. 1. Separate or individual image blocks,
respectively, on the adjacent border of the display units 110 and
120 can hereby be assigned to each light emitting element 131 to
136, wherein the subdivision of the border areas of the display
units 110 and 120 bordering the illuminating device 130 into
individual image blocks 111 to 116 as well as 121 to 126 can
correspond to the subdivision of the illuminating device 130 into
individual light emitting elements 131 to 136, as it is shown in
FIG. 1. In the alternative, the image blocks 111 to 116 as well as
121 to 126, however, could also have another classification
structure, for example could be slightly spaced apart from one
another or could slightly overlap one another in pairs. Only a
common image block could furthermore also in each case be assigned
for example to two light emitting elements 131 to 136, such as,
e.g. the light emitting elements 132 and 133, at each display unit
110 and 120. If applicable, only a single image block could also be
provided here along every border of the display surfaces of every
display unit 110 and 120 bordering to the illuminating device 130,
or, e.g., the entire display surface of each display unit 110 and
120 could form the image block, which is to be evaluated. The
subdivision shown in FIG. 1, however, allows for a better color
adaptation of the light of the illuminating device 130 to the
colors of the image displays of the display units 110 and 120 at
the borders bordering the illuminating device 130.
[0070] In a first method step 1--e.g. as illustrated in FIG. 1--a
first color information is determined from a respective image block
111 of a first one of the at least two display units 110 and 120
bordering the transition area, and a second color information is
determined from a respective image block 121 of a second one of the
at least two display units 110 and 120 bordering the transition
area by means of the mentioned at least one determining device 141
for a corresponding control of an exemplary light emitting element
131 of the illuminating device 130. For determining the color
information, a color information (e.g. emitted light/light
spectrum) emitted by the respective image block 111 or 121,
respectively, of the respective display unit 110 or 120,
respectively, can be captured by means of optical waveguides 337 or
can be coupled into the latter, respectively, and can be
transmitted to the at least one determining device 141. In a second
method step 2, at least one color signal is then formed as a
function of the mentioned first and second color information
determined by the determining device 141. The mentioned color
control device 142 then uses this at least one color signal in a
third method step 3, in order to control the light emitting element
131 or the illuminating device 130, respectively, as a function of
this at least one color signal. As a function of the determined
color information, a light, the color and/or color spectrum of
which is determined by the at least one color signal, is then
emitted by the light emitting element 131 or by the illuminating
device 130, respectively.
[0071] As shown in FIGS. 4a, 4b, 4c, the proposed method can be
carried out in different ways. According to FIG. 4a, for example,
the at least one determining device 441 can be used to determine
the color information for a pair or a plurality of image blocks 411
and 421 of the two separate display units 410 and 420. In the first
method step 1, the color information signals, which originate from
the different image blocks 411, 412 and which can be coupled into
optical waveguides 337, e.g. and can be transmitted by the latter
to the determining unit 441, are transmitted to the determining
unit 441 one after the other. This can be obtained for example by
means of a switching function in the determining unit 441. By means
of this switching function, a first color information of an image
block 411 of the first display unit 410 can be determined first,
for example, and can be temporarily stored, if applicable. A second
color information, e.g., of an image block 412 of the second
display unit 420 can then be determined and temporarily stored, if
applicable.
[0072] The determining unit 441 then transfers these two pieces of
determined color information to the color control device 442 in the
second method step. From the two pieces of color information, a
color signal or mixed color signal, respectively, is then derived
or mixed together, respectively. This mixed color signal can for
example be derived by means of a calculation rule (e.g. as
arithmetic means, etc.) or with the help of at least one color
table from the determined color information, for example in the
manner as already described. In the third method step 3, the color
signal is then used by the color control device 442 to control the
illuminating device 430, which then converts the mixed color signal
into a light, the coloring of which corresponds to this color or
mixed color signal, respectively.
[0073] FIG. 4b shows a further exemplary course of the proposed
method, in the case of which the color information from the image
blocks 411 and 421 of the display units 410 and 420 can be
determined in a temporally parallel or approximately temporally
parallel manner, respectively. For this purpose, provision is made
for separate determining units 443 and 444, which are assigned for
example--as illustrated in FIG. 4b--to the separate display units
410 and 420 as respective independent determining units 443 and
444. In the first method step 1, a first determining unit 443, for
example, which is assigned to the first display unit 410,
determines a first color information of an image block 411 of the
first display unit 410. Temporally parallel thereto, a second
determining unit 444, which is assigned to the second display unit
420, determines a second color information of an image block 412 of
the second display unit 420. A transmission of the color
information signals to the determining units 443, 444 can thereby
take place by means of optical waveguides 337, for example.
[0074] The color information determined by the determining units
443 and 444 is then in turn transmitted to the color control device
442 in the second method step 2, which, in turn, can take place in
a temporally parallel manner, if applicable. Analogous to the
alternative of FIG. 4a, the color control device then forms the
color signal or mixed color signal, respectively--e.g. by means of
calculation rule or by means of at least one color table. In the
third method step 3, the color control device 442 transmits this
mixed color signal to the illuminating device 430 for the
corresponding control and is converted accordingly by the
illuminating device 430.
[0075] FIG. 4c shows a further alternative of the course of the
method for operating the display device 100 in an exemplary and
schematic manner. A mixing process is hereby physically carried out
on the level of the illuminating device 430. For this purpose, the
corresponding color information is first determined in the first
method step 1 by the determining units 443 and 444 from the image
blocks 411 and 421 assigned thereto of the respective display units
410 and 420. This color information is then converted into
corresponding color signals in the second method step 2. In the
third method step 3, the color control device 442 then transmits
these color signals to separate subgroups or separate light
emitting elements 431 and 432, respectively, of the illuminating
device 430, so that the color signal, which was obtained, e.g.,
from the color information of the image block 411 of the first
display unit 410, is converted by the one light emitting element
431, while the other light emitting element 432 converts the color
signal, which was determined from the color information of the
image block 421 of the second display unit 420.
* * * * *