U.S. patent application number 16/157632 was filed with the patent office on 2019-02-07 for automatic page detection method for print article and print article using the same.
The applicant listed for this patent is Generalplus Technology Inc.. Invention is credited to Li Sheng LO.
Application Number | 20190043376 16/157632 |
Document ID | / |
Family ID | 56976783 |
Filed Date | 2019-02-07 |
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United States Patent
Application |
20190043376 |
Kind Code |
A1 |
LO; Li Sheng |
February 7, 2019 |
AUTOMATIC PAGE DETECTION METHOD FOR PRINT ARTICLE AND PRINT ARTICLE
USING THE SAME
Abstract
An automatic page detection method for a print article and a
print article using the same are provided in the present invention.
The automatic page detection method for the print article includes
the steps of: disposing N receiving units at N first preset
position of a cover of the print article; disposing a transmitting
unit at the second preset position of the cover of the print
article; disposing N thin conductors respectively at N pages,
wherein the a thin conductor is disposed between K.sup.th first
preset position of the K.sup.th page and the second preset position
of the K.sup.th page; emitting a detection signal by the
transmitter; and determining the present page according to the
receiving unit(s) of the N receiving units which receive(s) the
detection signal.
Inventors: |
LO; Li Sheng; (Zhubei City,
TW) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Generalplus Technology Inc. |
Hsinchu City |
|
TW |
|
|
Family ID: |
56976783 |
Appl. No.: |
16/157632 |
Filed: |
October 11, 2018 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
15081564 |
Mar 25, 2016 |
10127823 |
|
|
16157632 |
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
G09B 5/062 20130101 |
International
Class: |
G09B 5/06 20060101
G09B005/06 |
Foreign Application Data
Date |
Code |
Application Number |
Mar 27, 2015 |
TW |
104110041 |
Claims
1. An automatic page detection method, adapted for a print article,
wherein the print article includes a plurality of pages, wherein
the automatic page detection method comprises: providing N
receiving units at N first preset positions in a specific page of
the print article; providing a transmitting unit at a second preset
position in the specific page of the print article; providing N
thin conductors to N pages, wherein a thin conductor of thin
conductors is set between K.sup.th first preset position of
K.sup.th page and the second position of K.sup.th page; sending a
detection signal from the transmitting unit; and determining a
present page according to a receiving unit of N receiving units,
wherein the receiving unit of N receiving units receives the
detection signal, wherein N and K are natural number, and
K<=N.
2. The automatic page detection method according to claim 1,
further comprising: respectively disposing (N-J) second thin
conductors on the (J+1).sup.th first preset position to N.sup.th
first preset position in J.sup.th page for providing signal
transmission paths, wherein J is a natural number and J<N.
3. A print article, comprising: N pages, wherein each page includes
N first preset positions and a second preset position, wherein
K.sup.th page comprises: a thin conductor, wherein the thin
conductor is disposed between K.sup.th first preset position of
K.sup.th page and the second position of K.sup.th page; and a
specific page, comprising: N receiving units, respectively disposed
on N first present positions; a transmitting unit, disposed on the
second position; a control circuit, respectively coupled to the
transmitting unit and N receiving units, wherein the control
circuit controls the transmitting unit to output a detection
signal, and the control circuit determines a present page according
to a receiving unit of N receiving units, wherein the receiving
unit of N receiving units receives the detection signal, wherein N
and K are natural number, and K<=N.
4. The print article according to claim 3, wherein the J.sup.th
page further comprises: (N-J) second thin conductors, respectively
disposed on the (J+1).sup.th first preset position to N.sup.th
first preset position in J.sup.th page for providing signal
transmission paths, wherein J is a natural number and J<N.
5. The print article according to claim 3, wherein the transmitting
unit comprises: a transistor, comprising a base terminal, a emitter
terminal and a collector terminal, wherein the base terminal of the
transistor is coupled to the control circuit for receiving a
resonant pulse, wherein the emitter terminal of the transistor is
coupled to a common voltage; a resonant circuit, comprising a first
terminal and a second terminal, wherein the first terminal of the
resonant circuit is coupled to a power voltage, and the second
terminal of the resonant circuit is coupled to the collector
terminal of the transistor; and a transmitting conductor, coupled
to the second terminal of the resonant circuit.
6. The print article according to claim 5, wherein the resonant
circuit comprises: a resistor, comprising a first terminal and a
second terminal, wherein the first terminal of the resistor is
coupled to the first terminal of the resonant circuit, and the
second terminal of the resistor is coupled to the second terminal
of the resonant circuit; a capacitor, comprising a first terminal
and a second terminal, wherein the first terminal of the capacitor
is coupled to the first terminal of the resonant circuit, and the
second terminal of the capacitor is coupled to the second terminal
of the resonant circuit; and a inductor, comprising a first
terminal and a second terminal, wherein the first terminal of the
inductor is coupled to the first terminal of the resonant circuit,
and the second terminal of the inductor is coupled to the second
terminal of the resonant circuit.
7. The print article according to claim 3, wherein each of the
receiving units comprises: a receiving conductor; a filtering unit,
coupled to the receiving conductor, for performing a bandpass
filter to output a bandpass signal; a signal amplifying unit,
comprising an input terminal and an output terminal, wherein the
output terminal of the signal amplifying unit is coupled to the
filtering unit, for amplifying the bandpass signal to output the
amplified bandpass signal; and a peak detection unit, for detecting
the amplified bandpass signal to output a detection pulse.
8. The print article according to claim 7, wherein the filtering
unit comprises: a capacitor, comprising a first terminal and a
second terminal, wherein the first terminal of the capacitor is
coupled to the receiving conductor, and the second terminal of the
capacitor is coupled to a common voltage; and an inductor,
comprising a first terminal and a second terminal, wherein the
first terminal of the inductor is coupled to the receiving
conductor, and the second terminal of the inductor is coupled to a
common voltage.
9. The print article according to claim 7, wherein the signal
amplifying unit comprises: an isolation capacitor, comprising a
first terminal and a second terminal, wherein the first terminal of
the isolation capacitor is coupled to the filtering unit and the
input terminal of the signal amplifying unit; a transistor,
comprising a base terminal, a emitter terminal and a collector
terminal, wherein the base terminal of the transistor is coupled to
the second terminal of the isolation capacitor, the emitter
terminal of the transistor is coupled to a common voltage, and the
collector terminal of the transistor is coupled to the output
terminal of the signal amplifying unit; a first resistor,
comprising a first terminal and a second terminal, wherein the
first terminal of the first resistor is coupled to the base
terminal of the transistor, and the second terminal of the first
resistor is coupled to the collector terminal of the transistor;
and a second resistor, comprising a first terminal and a second
terminal, wherein the first terminal of the second resistor is
coupled to a power voltage, and the second terminal of the second
resistor is coupled to the collector terminal of the
transistor.
10. The print article according to claim 7, wherein the peak
detection unit comprises: a diode, comprising a anode and a
cathode, wherein the anode of the diode is coupled to the input
terminal of the signal amplifying unit; a first capacitor,
comprising a first terminal and a second terminal, wherein the
first terminal of the first capacitor is coupled to the cathode of
the diode, and the second terminal of the first capacitor is
coupled to a common voltage; a first resistor, comprising a first
terminal and a second terminal, wherein the first terminal of the
first resistor is coupled to the cathode terminal of the diode, and
the second terminal of the first resistor is coupled to the common
voltage; and a second resistor, comprising a first terminal and a
second terminal, wherein the first terminal of the second resistor
is coupled to the cathode of the diode; a second capacitor,
comprising a first terminal and a second terminal, wherein the
first terminal of the second capacitor is coupled to the second
terminal of the second resistor, and the second terminal of the
second capacitor is coupled to the common voltage; and an
amplifier, comprising a first input terminal, a second input
terminal and an output terminal, wherein the first input terminal
of the amplifier is coupled to the cathode of the diode, the second
input terminal of the amplifier is coupled to the first terminal of
the second capacitor, and the output terminal of the amplifier
outputs the detection pulse.
11. The print article according to claim 3, wherein the
transmitting unit comprises: a pulse generating circuit, comprising
an input terminal and an output terminal, wherein the input
terminal of the pulse generating circuit is coupled to the control
circuit, for output a pulse; and a transmitting conductor, coupled
to the output terminal of the pulse generating circuit, wherein a
I.sup.th receiving unit comprising: I.sup.th receiving conductor,
coupled to the I.sup.th input/output pin; wherein an impedance
element is between the (I+1).sup.th input/output pin and the
I.sup.th input/output pin, wherein, when the (I+1).sup.th
input/output pin charges the I.sup.th input/output pin to a
specific voltage, the control circuit controls the pulse generating
circuit to output the pulse, and the control circuit determines the
present page according to whether the voltage of the I.sup.th
input/output pin is smaller than the specific voltage or not.
12. The print article according to claim 3, wherein the
transmitting unit comprises: a pulse generating circuit, comprising
an input terminal and an output terminal, wherein the input
terminal of the pulse generating circuit is coupled to the control
circuit, for output a pulse; and a transmitting conductor, coupled
to the output terminal of the pulse generating circuit, wherein a
I.sup.th receiving unit comprising: I.sup.th receiving conductor,
coupled to the I.sup.th input/output pin; wherein an impedance
element is between the (I-1).sup.th input/output pin and the
I.sup.th input/output pin, wherein, when the (I-a1).sup.th
input/output pin charges the I.sup.th input/output pin to a
specific voltage, the control circuit controls the pulse generating
circuit to output the pulse, and the control circuit determines the
present page according to whether the voltage of the I.sup.th
input/output pin is smaller than the specific voltage or not.
Description
[0001] This application is a Divisional of co-pending application
Ser. No. 15/081,564, filed on 25 Mar. 2016, for which priority is
claimed under 35 U.S.C. .sctn. 120; and this application claims
priority of Application No. 104110041 filed in Taiwan on 27 Mar.
2015 under 35 U.S.C. .sctn. 119.
BACKGROUND OF THE INVENTION
Field of the Invention
[0002] The present invention relates in general to a page detection
technology for printed matter, and more particularly to an
automatic page detection method for print article and a print
article using the same.
Related Art
[0003] As living standards is improved, more and more parents start
to focus on children's education, and they also start to seriously
consider the issue of education of preschool children. In this
respect, more and more preschoolers puzzle electronic products
appear in the market. But most of these products are consumer
electronics products. They may cause children's physical,
psychological and spiritual aspects of damage in use for a long
period. Further, it will cause a decline in children's reading
ability. Thus, the paper book is still the main tool for early
childhood education.
[0004] In order to enhance the fun of children's books and toys
property, and to raise children's interest in books, an e-book
appears in the market. The e-book has interactive function, such as
a button for sounding the content in a page of the book. Moreover,
in order to identify the page turned by user, a page detection
technology is provided in the prior art. FIG. 1 illustrates a
diagram depicting a page detection device provided by Chinese
utility model patent No. CN202632565U. In the page detection
device, an Infrared ray reading circuit 102, and there is a bar
code 101 in the right side of every pages. It is determine the
present page turned by user by reading the bar code of the page.
This method need to dispose a block thicker than the book to
dispose the Infrared ray reading circuit 102 to read each page's
bar code 101.
[0005] FIG. 2 illustrates a drawing depicting an optical detection
type page detection device according to a prior art. Referring to
FIG. 2, in this figure, a nine pages book is provided for example.
The optical detection type page detection device utilizes 9 photo
sensors 201, such as CDS (cadmium sulfide), photo diode. When user
turns to a specific page, the specific page would cover the
specific number of photo sensors. Thus, a nine pages book needs
nine photo sensors. In addition, each page respectively has
different apertures, and different pages would obscure different
number of photo sensors to determine the present page.
[0006] Although the design of the optical detection type page
detection device is simple, it requires a large number of photo
sensors to achieve the page detection. Those photo sensors are the
main costs. Also, CDS has been strictly restricted in the EU and
the United States. Further, the pages in the book need to be drill
through holes; it would increase an extra cost.
SUMMARY OF THE INVENTION
[0007] It is therefore an objective of the present invention to
provide an automatic page detection method for print article and a
print article using the same, wherein the conductor is built in
each page and the conduction path for electrical signal is provided
such that the page can be determined by transmitting circuit and
receiving circuit.
[0008] In view of this, the present invention provides an automatic
page detection method, adapted for a print article, wherein the
print article includes a plurality of pages, wherein the automatic
page detection method includes: providing N receiving units at N
first preset positions in a specific page of the print article;
providing a transmitting unit at a second preset position in the
specific page of the print article; providing N thin conductors to
N pages, wherein a thin conductor is set between K.sup.th first
preset position of K.sup.th page and the second position of
K.sup.th page; sending a detection signal from the transmitting
unit; and determining a present page according to a receiving unit
of N receiving units in which the receiving unit receives the
detection signal, wherein N and K are natural number, and
K<=N.
[0009] The present invention further provides an automatic page
detection method, adapted for a print article, wherein the print
article includes a plurality of pages, wherein the automatic page
detection method includes: providing N transmitting units at N
first preset positions in a specific page of the print article;
providing a receiving unit at a second preset position in the
specific page of the print article; providing N thin conductors to
N pages, wherein a thin conductor is set between K.sup.th first
preset position of K.sup.th page and the second position of
K.sup.th page; respectively outputting detection signals from the
transmitting units, wherein I.sup.th transmitting unit outputs
I.sup.th detection signal; and determining a present page according
to an index number of the detection signal received by the
receiving unit, wherein N, I and K are natural number, and K<=N
and I<=N.
[0010] The present invention further provides a print article. The
print article includes N pages and a specific page. Each of the N
pages includes N first preset positions and a second preset
position. Each page includes a thin conductor, wherein the thin
conductor is disposed between K.sup.th first preset position of
K.sup.th page and the second position of K.sup.th page. The
specific page includes N receiving units, a transmitting unit and a
control circuit. The N receiving units are respectively disposed on
N first present positions. The transmitting unit is disposed on the
second position. The control circuit is respectively coupled to the
transmitting unit and N receiving units. The control circuit
controls the transmitting unit to output a detection signal, and
the control circuit determines a present page according to a
receiving unit of N receiving units in which the receiving unit
receives the detection signal, wherein N and K are natural number,
and K<=N.
[0011] The present invention further provides a print article. The
print article includes N pages and a specific page. Each page
includes N first preset positions and a second preset position,
wherein each page comprises a thin conductor, wherein the thin
conductor is disposed between K.sup.th first preset position of
K.sup.th page and the second position of K.sup.th page. The
specific page includes N transmitting units, a receiving unit and a
control circuit. N transmitting units are respectively disposed on
N first present positions. The receiving unit is disposed on the
second position. The control circuit is coupled to the receiving
unit and N transmitting units. The control circuit controls the N
transmitting units to respectively output a first detection signal
to N.sup.th detection signal, and the control circuit determines a
present page according to an index number of received detection
signal received by the receiving unit, wherein N and K are natural
number, and K<=N.
[0012] In the automatic page detection method for print article and
the print article in accordance with a preferred embodiment of the
present invention, the J.sup.th page further includes (N-J) second
thin conductors, respectively disposed on the (J+1).sup.th first
preset position to N.sup.th first preset position in J.sup.th page
for providing signal transmission paths, wherein J is a natural
number and J<N. In a preferred embodiment, the transmitting unit
includes a transistor, a resonant circuit and a transmitting
conductor. The transistor includes a base terminal, a emitter
terminal and a collector terminal, wherein the base terminal of the
transistor is coupled to the control circuit for receiving a
resonant pulse, wherein the emitter terminal of the transistor is
coupled to a common voltage. The resonant circuit includes a first
terminal and a second terminal, wherein the first terminal of the
resonant circuit is coupled to a power voltage, and the second
terminal of the resonant circuit is coupled to the collector
terminal of the transistor. The transmitting conductor is coupled
to the second terminal of the resonant circuit.
[0013] In the automatic page detection method for print article and
the print article in accordance with a preferred embodiment of the
present invention, the resonant circuit includes a resistor, a
capacitor and an inductor. The resistor includes a first terminal
and a second terminal, wherein the first terminal of the resistor
is coupled to the first terminal of the resonant circuit, and the
second terminal of the resistor is coupled to the second terminal
of the resonant circuit. The capacitor includes a first terminal
and a second terminal, wherein the first terminal of the capacitor
is coupled to the first terminal of the resonant circuit, and the
second terminal of the capacitor is coupled to the second terminal
of the resonant circuit. The inductor includes a first terminal and
a second terminal, wherein the first terminal of the inductor is
coupled to the first terminal of the resonant circuit, and the
second terminal of the inductor is coupled to the second terminal
of the resonant circuit.
[0014] In the automatic page detection method for print article and
the print article in accordance with a preferred embodiment of the
present invention, each receiving unit includes a receiving
conductor, a filtering unit, a signal amplifying unit and a peak
detection unit. The filtering unit is coupled to the receiving
conductor, for performing a bandpass filter to output a bandpass
signal. The signal amplifying unit includes an input terminal and
an output terminal, wherein the output terminal of the signal
amplifying unit is coupled to the filtering unit, for amplifying
the bandpass signal to output the amplified bandpass signal. The
peak detection unit is used for detecting the amplified bandpass
signal to output a detection pulse.
[0015] In the automatic page detection method for print article and
the print article in accordance with a preferred embodiment of the
present invention, the transmitting unit includes a pulse
generating circuit and a transmitting conductor. The pulse
generating circuit includes an input terminal and an output
terminal, wherein the input terminal of the pulse generating
circuit is coupled to the control circuit, for output a pulse. The
transmitting conductor is coupled to the output terminal of the
pulse generating circuit. In addition, I.sup.th receiving unit
includes I.sup.th receiving conductor which is coupled to the
I.sup.th input/output pin. The impedance element is between the
(I+1).sup.th input/output pin and the I.sup.th input/output pin.
When the (I+1).sup.th input/output pin charges the I.sup.th
input/output pin to a specific voltage, the control circuit
controls the pulse generating circuit to output the pulse, and the
control circuit determines the present page according to whether
the voltage of the I.sup.th input/output pin is smaller than the
specific voltage or not.
[0016] The spirit of the present invention is to provide wireless
signal transmitting unit(s) and wireless signal receiving unit(s),
and to provide thin conductor(s) in the page(s) to be detected for
providing a signal transmission path. Thus, the present page turned
by user can be detected by the transmission of the wireless
detection signal through the thin conductor and whether the
wireless signal receiving unit receives the wireless detection
signal or not.
[0017] Further scope of the applicability of the present invention
will become apparent from the detailed description given
hereinafter. However, it should be understood that the detailed
description and specific examples, while indicating preferred
embodiments of the present invention, are given by way of
illustration only, since various changes and modifications within
the spirit and scope of the present invention will become apparent
to those skilled in the art from this detailed description.
BRIEF DESCRIPTION OF THE DRAWINGS
[0018] FIG. 1 illustrates a diagram depicting a page detection
device provided by Chinese utility model patent No.
CN202632565U.
[0019] FIG. 2 illustrates a drawing depicting an optical detection
type page detection device according to a prior art.
[0020] FIG. 3 illustrates a system block diagram depicting a print
article according to a preferred embodiment of the present
invention.
[0021] FIG. 4 illustrates a drawing depicting a page detection
function performed by the print article according to a preferred
embodiment of the present invention.
[0022] FIG. 5 illustrates a system block diagram depicting a
transmitting unit and a receiving unit of the print article
according to a preferred embodiment of the present invention.
[0023] FIG. 6 illustrates a detail circuit diagram depicting a
transmitting unit and a receiving unit of the print article
according to a preferred embodiment of the present invention.
[0024] FIG. 7 illustrates a system block diagram depicting a print
article according to a preferred embodiment of the present
invention.
[0025] FIG. 8 illustrates a drawing depicting a page detection
function performed by the print article according to a preferred
embodiment of the present invention.
[0026] FIG. 9 illustrates a circuit diagram depicting a
transmitting unit and a plurality of receiving units corresponding
to the print article in FIG. 3 according to a preferred embodiment
of the present invention.
[0027] FIG. 10 illustrates an operational waveform diagram
depicting the transmitting unit and the receiving units
corresponding to the print article in FIG. 9 according to a
preferred embodiment of the present invention.
[0028] FIG. 11 illustrates a flow chart depicting an automatic page
detection method for a print article according to a preferred
embodiment of the present invention.
[0029] FIG. 12 illustrates a flow chart depicting an automatic page
detection method for a print article according to a preferred
embodiment of the present invention.
DETAILED DESCRIPTION OF THE INVENTION
[0030] FIG. 3 illustrates a system block diagram depicting a print
article according to a preferred embodiment of the present
invention. Referring to FIG. 3, the print article includes N pages
301-1.about.301-N, a transmitting unit 302, N receiving units
303-1.about.303-N and a control circuit 304. In addition, in N
pages, first to N.sup.th pages respectively include rectangular
first thin conductor 305-1.about.305-N and N-1 square second thin
conductors 306. Generally speaking, the transmitting unit 302, the
receiving units 303-1.about.303-N and the control unit 304 are
disposed in the front cover page or the back cover page. People
having ordinary skill in the art should know that the
abovementioned thin conductors can be implemented by thin-film
metal, conductive inks, conductive paint, conductive coating, etc.
The detail description is omitted.
[0031] The first thin conductors 305-1.about.305-N and the second
thin conductor 306 are served as the signal transmission paths.
Referring to FIG. 3, when the print article is shut, the disposed
positions of the first thin conductors respectively in the first to
N.sup.th pages 301-1.about.301-N are overlapped with the
transmitting unit 302 and at least one receiving unit. For example,
when the first page 301-1 covers the cover page having the
transmitting unit 302, the receiving units 303-1.about.303-N and
the control circuit 304, the first thin conductor 305-1 in the
first page 301-1 would cover the transmitting unit 302, the first
receiving unit 303-1 and the second receiving unit 303-2.
[0032] FIG. 4 illustrates a drawing depicting a page detection
function performed by the print article according to a preferred
embodiment of the present invention. Referring to FIG. 4, it is
assumed that user turns to the page 3. The control circuit 304
would control the transmitting circuit 302 to send the detection
signal DS. Meanwhile, the detection signal DS passes through the
first thin conductors 305-1, 305-2, 305-3 such that the detection
signal DS is transmitted to the receiving units 303-1, 303-2 and
303-3. When the control circuit 304 controls the transmitting
circuit 302 to send the detection signal DS, the control circuit
304 determines whether the receiving units 303-1.about.303-N
receives the detection signal DS or not in the same time. When the
control circuit 304 determines that, the receiving units 303-1,
303-2 and 303-3 receive the detection signal DS, the control
circuit 304 determines that user turns to page 3 of the print
article.
[0033] FIG. 5 illustrates a system block diagram depicting a
transmitting unit and a receiving unit of the print article
according to a preferred embodiment of the present invention.
Referring to FIG. 5, in this embodiment, the transmitting unit
includes a voltage boost circuit 501 and a transmitting conductor
502. The receiving unit includes a receiving conductor 503, a
filtering circuit 504, an amplifying circuit 505, a peak detection
and comparison circuit 506. The control circuit 304 output a
detection pulse, through the voltage boost circuit 501, the swing
of the detection pulse is amplified. And then, the transmitting
conductor 502 emits the detection signal DS. The receiving
conductor 503 receives the detection signal DS, through the
filtering circuit, the noise of the detection signal DS is
filtered. And then the amplifying circuit 505 amplifies the
detection signal DS. Then, the peak detection and comparison
circuit 506 converts the amplified detection signal DS to the pulse
signal for identifying by the control circuit.
[0034] FIG. 6 illustrates a detail circuit diagram depicting a
transmitting unit and a receiving unit of the print article
according to a preferred embodiment of the present invention.
Referring to FIG. 6, in this embodiment, the voltage boost circuit
501 is implemented by a transistor 601 and RLC resonant circuit
602. When the control circuit 304 sends the detection pulse to the
base terminal of the transistor 601, the frequency of the detection
pulse is about equal to the resonant frequency of the RLC resonant
circuit 602. Thus, the detection signal DS emitted by the
transmitting conductor 502 would be a sinusoidal wave having a
great amplitude.
[0035] In addition, in this embodiment, the filtering circuit 504
is a bandpass filter 603 implemented by inductor and capacitor. The
passband of the bandpass filter 603 covers the frequency of the
detection signal DS for filtering the noise. The amplifying circuit
505 is a common emitter amplifier 604 with collector feedback
configuration, for amplifying the received detection signal DS. The
peak detection and comparison circuit 506 is implemented by a
quasi-peak detector 605, which is implemented by diode, resistor
and capacitor, and a comparison circuit 606, which is implemented
by resistor, capacitor and amplifier.
[0036] According to the implementation of the circuit, when the
control circuit 304 outputs the detection pulse, the I/O
(input/output) pin of the control circuit 304 receives the logic
high voltage output by the comparison circuit 605, it means that
the receiving unit corresponding to the I/O pin receives the
detection signal DS. Thus, the control circuit can determine the
present page to which user turns.
[0037] In the abovementioned embodiment, a transmitting unit with
multiple receiving units is taken as example. However, to exam the
detail circuit, the cost of the receiving unit is much higher than
the cost of the transmitting unit. Further, the receiving unit has
too many elements. It would cause that the cover becomes too thick.
In order to solve those problems, the following embodiment adopts
one receiving unit with multiple transmitting units to implement
the present invention.
[0038] FIG. 7 illustrates a system block diagram depicting a print
article according to a preferred embodiment of the present
invention. Referring to FIG. 7, similarly, the print article
includes N pages 701-1.about.701-N, a receiving unit 702, a
plurality of transmitting units 703-1.about.703-N and a control
circuit 704. In the N pages, the first to N.sup.th pages include
rectangular first thin conductors 705-1.about.705-N respectively
and the first to N.sup.th pages also include one to N-1 square
second thin conductors 706 respectively. Generally speaking, the
receiving unit 702, the transmitting units 703-1 to 703-N and the
control circuit 704 are disposed in the front cover or the back
cover.
[0039] Similarly, the first thin conductors 705-1.about.705-N and
the second thin conductors 706 are served as the signal
transmission paths. Referring to FIG. 7, when the print article is
shut, the disposed positions of the first thin conductors
705-1.about.705-N respectively in the first to N.sup.th pages is
overlapped with a receiving unit 702 and at least one transmitting
unit. For example, when the first page 701-1 covers the cover
having the receiving unit 702, the transmitting units 703-1-703-N
and the control circuit 704, the first thin conductor 705-1 of the
first page 701-1 covers the receiving unit 702 and the first
transmitting unit 703-1. Similarly, when the second page 701-2
covers the cover having the receiving unit 702, the transmitting
units 703-1.about.703-N and the control circuit 704, the first thin
conductor 705-2 of the second page 701-2 covers the receiving unit
702, the first transmitting unit 703-1 and the second transmitting
unit 703-2.
[0040] FIG. 8 illustrates a drawing depicting a page detection
function performed by the print article according to a preferred
embodiment of the present invention. Referring to FIG. 8, it is
assumed that user turns to page 3. The control circuit 704 controls
each of transmitting units to sequentially emit detection signals
DS1.about.DSN in a detection period. Further, the detection period
is divided into N sub-detection period. In the first sub-detection
period, the first transmitting unit 703-1 emits the detection
signal DS1, in the second sub-detection period; the second
transmitting unit 703-2 emits the detection signal DS2, and so on.
At this time, the detection signals pass the second thin conductors
706 and the first thin conductors 705-1.about.705-3 and the
detection signals DS1.about.DS3 are transmitted to the receiving
unit 702. When the control circuit 704 controls the transmitting
units 703-1.about.703-N to respectively emit the detection signals
DS1.about.DSN, the control circuit 704 determines the detection
signals received by the receiving units in the same time. When the
control circuit 704 determines that the receiving unit 702 receives
the detection signals DS1, DS2 and DS3, the control circuit 704 can
determine that the user turns to page 3 of the print article.
[0041] In the abovementioned embodiment, if the signal strength is
strong enough and the page number is small enough, the second thin
conductors 706 or 306 may not be necessary. However, if the page
number is too large, the page is too thick, or the signal strength
is too weak, the second thin conductors 706 or 306 are necessary.
The disadvantage of the abovementioned embodiments is that the
element count of transmitting unit and receiving unit is too large
and they has to be implemented by discrete circuit. It cause that
the cover of the print article requires a certain thick. In the
following embodiment, the use of the discrete circuits can be
reduced. In order to reduce the discrete circuit, the more complex
control method would be required, and the concept of hardware and
software co-design is adopted.
[0042] FIG. 9 illustrates a circuit diagram depicting a
transmitting unit and a plurality of receiving units corresponding
to the print article in FIG. 3 according to a preferred embodiment
of the present invention. Referring to FIG. 9, in this embodiment,
the transmitting unit 91 is implemented only by a voltage doubler
911, a transistor switch 912 and a transmitting conductor 913, and
the receiving units 92 are implemented only by receiving conductors
921, resistors 922 and I/O ports RXIO-1.about.RXIO-N of the control
circuit 304, wherein a resistor 922 is disposed between two I/O
ports.
[0043] FIG. 10 illustrates a operational waveform diagram depicting
the transmitting unit and the receiving units corresponding to the
print article in FIG. 9 according to a preferred embodiment of the
present invention. Referring to FIG. 10, it is assumed that the I/O
port RXIO-2 charges the receiving unit 92 of the I/O port RXIO-1
when the receiving unit 92 of the I/O port RXIO-1 is detected. When
the receiving unit 92 of the I/O port RXIO-1 is charged to a
specific voltage, such as half of the power voltage VDD/2, the
control circuit 304 controls the transmitting unit to emit the
detection pulse. If the receiving unit 92 of the I/O port RXIO-1
receives the detection pulse, the received signal's waveform would
be as the waveform 1001. At this time, the I/O port RXIO-1 of the
control circuit 304 would detects the detection pulse in the
meantime.
[0044] Similarly, it is assumed that the I/O port RXIO-1 charges
the receiving unit 92 of the I/O port RXIO-2 when the receiving
unit 92 of the I/O port RXIO-2 is detected. When the receiving unit
92 of the I/O port RXIO-1 is charged to a specific voltage, such as
half of the power voltage VDD/2, the control circuit 304 controls
the transmitting unit to emit the detection pulse. If the receiving
unit 92 of the I/O port RXIO-2 receives the detection pulse, the
received signal's waveform would be as the waveform 1001. At this
time, the I/O port RXIO-2 of the control circuit 304 would detects
the detection pulse in the meantime.
[0045] According to the abovementioned embodiment, the use of
discrete circuits is greatly reduced, and the thick of cover is
reduced, and thus, the cost is reduced. However, the design in the
abovementioned embodiment decreases the noise immunity. In order to
increase the noise immunity, the detection count can be increased
to enhance the noise immunity, and the misjudgment of page
detection can be prevented.
[0046] In addition, comparing the embodiment in FIG. 9 and the
embodiment in FIG. 6, if the design of the transmitting unit and
the design of the receiving unit adopt the implementation in FIG.
6, since the signal strength of the resonant circuit is greater,
the second thin conductors 306 or 706 may not be necessary.
However, in the embodiment in FIG. 9, the signal strength is
weaker; the second thin conductors are needed to serve as the
signal transmission paths to avoid over attenuation of signal,
which cause that the receiving unit 92 cannot receive the signal.
However, if the design of the embodiment in FIG. 9 is adopted in a
print article with few pages, the second thin conductor may not be
necessary. Therefore, the design of the second thin conductors 306
or 706 is optional. The present invention is not limited
thereto.
[0047] Furthermore, the abovementioned embodiment adopts the cover
page (front cover or back cover) to dispose the transmitting
unit(s) and receiving unit(s). However, people having ordinary
skill in the art should know that to dispose the transmitting
unit(s) and receiving unit(s) in any specific page can achieve the
same result. The present invention is not limited thereto.
[0048] According to the embodiment in FIG. 3, an automatic page
detection method for a print article can be summarized. FIG. 11
illustrates a flow chart depicting an automatic page detection
method for a print article according to a preferred embodiment of
the present invention. Referring to FIG. 11, the automatic page
detection method for a print article includes the steps as
follow.
[0049] In step S1101, the method starts.
[0050] In step S1102, N receiving units are provided respectively
at N first preset positions in a specific page, such as the front
cover page or the back cover page.
[0051] In step S1103, a transmitting unit is provided at the second
preset position of the specific page.
[0052] In step S1104, N thin conductors are provided respectively
to N page, wherein a thin conductor is set in K.sup.th first preset
position to the second preset position of K.sup.th page.
[0053] In step S1105, a detection signal is emitted by transmitting
unit.
[0054] In step S1106, the present page is detected according to the
receiving unit of N receiving units in which the receiving unit
receives the detection signal.
[0055] In step S1107, the method ends.
[0056] Similarly, according to the embodiment in FIG. 7, an
automatic page detection method for a print article can be
summarized. FIG. 12 illustrates a flow chart depicting an automatic
page detection method for a print article according to a preferred
embodiment of the present invention. Referring to FIG. 12, the
automatic page detection method for a print article includes the
steps as follow.
[0057] In step S1201, the method starts.
[0058] In step S1202, N transmitting units are provided
respectively at N first preset positions in a specific page, such
as the front cover page or the back cover page.
[0059] In step S1203, a receiving unit is provided at the second
preset position of the specific page.
[0060] In step S1204, N thin conductors are provided respectively
to N page, wherein a thin conductor is set in K.sup.th first preset
position to the second preset position of K.sup.th page.
[0061] In step S1205, the detection signals are respectively output
from the transmitting units, wherein I.sup.th transmitting unit
outputs I.sup.th detection signal.
[0062] In step S1206, a present page is determined according to an
index number of the detection signal received by the receiving
unit,
[0063] In step S1207, the method ends.
[0064] In summary, the spirit of the present invention is to
provide wireless signal transmitting unit(s) and wireless signal
receiving unit(s), and to provide thin conductor(s) in the page(s)
to be detected for providing a signal transmission path. Thus, the
present page turned by user can be detected by the transmission of
the wireless detection signal through the thin conductor and
whether the wireless signal receiving unit receives the wireless
detection signal or not.
[0065] While the present invention has been described by way of
examples and in terms of preferred embodiments, it is to be
understood that the present invention is not limited thereto. To
the contrary, it is intended to cover various modifications.
Therefore, the scope of the appended claims should be accorded the
broadest interpretation so as to encompass all such
modifications.
* * * * *