U.S. patent application number 15/401731 was filed with the patent office on 2018-05-10 for capacitive stylus and tilt angle detecting method thereof.
The applicant listed for this patent is WALTOP INTERNATIONAL CORPORATION. Invention is credited to HUNG-I WANG, CHIA-JUI YEH.
Application Number | 20180129306 15/401731 |
Document ID | / |
Family ID | 60719611 |
Filed Date | 2018-05-10 |
United States Patent
Application |
20180129306 |
Kind Code |
A1 |
YEH; CHIA-JUI ; et
al. |
May 10, 2018 |
CAPACITIVE STYLUS AND TILT ANGLE DETECTING METHOD THEREOF
Abstract
This instant disclosure is related to a capacitive stylus and a
tilt angle detecting method thereof. The capacitive stylus is
acting on a touch pad. The capacitive stylus includes a sensing
electrode unit and a driving electrode unit, or the capacitive
stylus is provided with a first sensing electrode unit and a second
sensing electrode unit. The capacitive stylus further includes a
tilt angle corresponding table and a direction corresponding table
to determine the tilt angle and tilt direction of the capacitive
stylus on the touch pad.
Inventors: |
YEH; CHIA-JUI; (HSINCHU,
TW) ; WANG; HUNG-I; (NEW TAIPEI CITY, TW) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
WALTOP INTERNATIONAL CORPORATION |
HSINCHU |
|
TW |
|
|
Family ID: |
60719611 |
Appl. No.: |
15/401731 |
Filed: |
January 9, 2017 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
G06F 3/03545 20130101;
G06F 3/044 20130101; G06F 3/04162 20190501; G06F 3/0383 20130101;
G06F 3/0442 20190501; G06F 3/0441 20190501; G06F 3/0416
20130101 |
International
Class: |
G06F 3/038 20060101
G06F003/038; G06F 3/0354 20060101 G06F003/0354; G06F 3/041 20060101
G06F003/041 |
Foreign Application Data
Date |
Code |
Application Number |
Nov 10, 2016 |
TW |
105136634 |
Claims
1. A capacitive stylus acting on a touch pad, comprising: a
battery; a micro-controller coupled to the battery, the
micro-controller having a tilt angle corresponding table; a sensing
and driving signals processing unit coupled to the
micro-controller; a sensing electrode unit coupled to the sensing
and driving signals processing unit; and a driving electrode unit
coupled to the sensing and driving signals processing unit; wherein
the sensing electrode unit is acting on the touch pad to generate a
first axis signal of the sensing electrode unit and a second axis
signal of the sensing electrode unit; the driving electrode unit is
acting on the touch pad to generate a first axis signal of the
driving electrode unit and a second axis signal of the driving
electrode unit; and a tilt angle of the capacitive stylus on the
touch pad is obtained by corresponding the first axis signal of the
sensing electrode unit, the first axis signal of the driving
electrode unit, the second axis signal of the sensing electrode
unit and the second axis signal of the driving electrode unit to
the tilt angle corresponding table.
2. The capacitive stylus according to claim 1, wherein the
micro-controller has a direction corresponding table for obtaining
a tilt direction of the capacitive stylus on the touch pad.
3. The capacitive stylus according to claim 2, wherein the
direction corresponding table is configured to obtain the tilt
direction by receiving a first axis signal and a second axis
signal; the first axis signal is related to the first axis signal
of the sensing electrode unit and the first axis signal of the
driving electrode unit; the second axis signal is related to the
second axis signal of the sensing electrode unit and the second
axis signal of the driving electrode unit.
4. A capacitive stylus acting on a touch pad, comprising: a
battery; a micro-controller coupled to the battery, the
micro-controller having a tilt angle corresponding table; a sensing
and driving signals processing unit coupled to the
micro-controller; a first sensing electrode unit coupled to the
sensing and driving signals processing unit; and a second sensing
electrode coupled to the sensing and driving signals processing
unit; wherein the first sensing electrode unit is acting on the
touch pad to generate a first axis signal of the first sensing
electrode unit and a second axis signal of the first sensing
electrode unit; the second sensing electrode unit is acting on the
touch pad to generate a first axis signal of the second sensing
electrode unit and a second axis signal of the second sensing
electrode unit; and a tilt angle of the capacitive stylus on the
touch pad is obtained by corresponding the first axis of first
sensing electrode unit, the first axis signal of the second sensing
electrode unit, the second axis signal of the first sensing
electrode unit and the second axis signal of the second sensing
electrode unit to the tilt angle corresponding table.
5. The capacitive stylus according to claim 4, wherein the
micro-controller has a direction corresponding table for obtaining
a tilt direction of the capacitive stylus on the touch pad.
6. The capacitive stylus according to claim 5, wherein the
direction tilt corresponding table is configured to obtain the tilt
direction by receiving a first axis signal and a second axis
signal; the first axis signal is related to the first axis signal
of the first sensing electrode unit and the first axis signal of
the second sensing electrode unit; the second axis signal is
related to the second axis signal of the first sensing electrode
unit and the second axis signal of the second sensing electrode
unit.
7. A tilt angle detecting method applied to the capacitive stylus
according to claim 1, comprising: turning-on the capacitive stylus
and disposing the capacitive stylus on a touch pad; retrieving a
first axis signal of the sensing electrode unit and a first axis
signal of the driving electrode unit; retrieving a second axis
signal of the sensing electrode unit and a second axis signal of
the driving electrode unit; corresponding the first axis signal of
the sensing electrode, the first axis signal of the driving
electrode unit, the second axis signal of the sensing electrode
unit and the second axis signal of the driving electrode unit to
the tilt angle corresponding table; and obtaining a tilt angle of
the capacitive stylus; wherein the step of corresponding the first
axis signal of the sensing electrode unit, the first axis signal of
the driving electrode unit, the second axis signal of the sensing
electrode unit and the second axis signal of the driving electrode
unit to the tilt angle corresponding table is carried out by a
micro-processor disposed in the capacitive stylus.
8. The tilt angle detecting method according to claim 7, after the
step of retrieving a second axis signal of the sensing electrode
unit and a second axis signal of the driving electrode unit,
further comprising: retrieving a sum of the first axis signal of
the sensing electrode unit and the first axis signal of the driving
electrode unit as a first axis signal; retrieving a sum of the
second axis signal of the sensing electrode unit and the second
axis signal of the driving electrode unit as a second axis signal;
corresponding the first axis signal and the second axis signal to a
direction corresponding table; and obtaining a tilt direction of
the capacitive stylus.
9. The tilt angle detecting method according to claim 8, wherein
the direction corresponding table is built-into the
micro-controller of the capacitive stylus, and the step of
corresponding the first axis signal and the second axis signal to
the direction corresponding table is carried out by the
micro-controller.
10. The tilt angle detecting method according to claim 8, wherein
the direction corresponding table comprises a plurality of
directions corresponding to four quadrants on the touch pad.
Description
BACKGROUND
1. Technical Field
[0001] The instant disclosure relates to a capacitive stylus and
tilt angle detecting method thereof, in particular, to a capacitive
stylus having a sensing electrode unit and a driving electrode unit
for detecting the tilt angle and tilt direction of the capacitive
stylus and method of using the same.
2. Description of Related Art
[0002] The existing capacitive stylus products do not have the
function of detecting the tilt angle of the capacitive stylus
products. Therefore, further applications of the capacitive stylus
for touch devices under different tilt angles are limited. In
addition, there is a need for a device or method for detecting the
tilt angle and tilt direction of a capacitive stylus on a touch pad
while avoiding increasing the complexity of the electronic
devices.
SUMMARY
[0003] The instant disclosure is related to a capacitive stylus and
a tilt angle detecting method thereof, the capacitive stylus is
acting on a touch pad, and the capacitive stylus comprises: a
battery; a micro-controller coupled to the battery; a sensing and
driving signals processing unit coupled to the micro-controller; a
sensing electrode unit coupled to the sensing and driving signals
processing unit; and a driving electrode unit coupled to the
sensing and driving signals processing unit. The micro-controller
has a tilt angle corresponding table. The sensing electrode unit is
acting on the touch pad to generate a first axis signal of the
sensing electrode unit and a second axis signal of the sensing
electrode unit; the driving electrode unit is acting on the touch
pad to generate a first axis signal of the driving electrode unit
and a second axis signal of the driving electrode unit; and a tilt
angle of the capacitive stylus on the touch pad is obtained by
corresponding the first axis of the sensing electrode unit, the
first axis signal of the driving electrode unit, the second axis
signal of the sensing electrode unit and the second axis signal of
the driving electrode unit to the tilt angle corresponding
table.
[0004] In a preferred embodiment, the micro-controller has a
direction corresponding table for obtaining a tilt direction of the
capacitive stylus on the touch pad.
[0005] In a preferred embodiment, the direction corresponding table
is configured to obtain the tilt direction by receiving a first
axis signal and a second axis signal; the first axis signal is
related to the first axis signal of the sensing electrode unit and
the first axis signal of the driving electrode unit; the second
axis signal is related to the second axis signal of the sensing
electrode unit and the second axis signal of the driving electrode
unit.
[0006] The instant disclosure is further related to a capacitive
stylus acting on a touch pad. The capacitive stylus comprises: a
battery; a micro-controller coupled to the battery; a sensing and
driving signals processing unit coupled to the micro-controller; a
first sensing electrode unit coupled to the sensing and driving
signals processing unit; and a second sensing electrode unit
coupled to the sensing and driving signals processing unit. The
micro-controller has a tilt angle corresponding table. the first
sensing electrode unit is acting on the touch pad to generate a
first axis signal of the first sensing electrode unit and a second
axis signal of the second sensing electrode unit; the second
sensing electrode unit is acting on the touch pad to generate a
first axis signal of the second sensing electrode unit and a second
axis signal of the second sensing electrode unit; and a tilt angle
of the capacitive stylus on the touch pad is obtained by
corresponding the first axis signal of the sensing electrode unit,
the first axis signal of the driving electrode unit, the second
axis signal of the sensing electrode unit and the second axis
signal of the driving electrode unit to the tilt angle
corresponding table.
[0007] In a preferred embodiment, the micro-controller has a
direction corresponding table for obtaining a tilt direction of the
capacitive stylus on the touch pad.
[0008] In a preferred embodiment, the direction tilt corresponding
table is configured to obtain the tilt direction by receiving a
first axis signal and a second axis signal; the first axis signal
is related to the first axis signal of the sensing electrode unit
and the first axis signal of the driving electrode unit; the second
axis signal is related to the second axis signal of the sensing
electrode unit and the second axis signal of the driving electrode
unit.
[0009] The instant disclosure is further related to a tilt angle
detecting method applied to the capacitive stylus described above.
The method comprises: turning-on the capacitive stylus and
disposing the capacitive stylus on a touch pad; retrieving a first
axis signal of a sensing electrode unit and a first axis signal of
a driving electrode unit; retrieving a second axis signal of a
sensing electrode unit and a second axis signal of a driving
electrode unit; corresponding the first axis signal of the sensing
electrode unit, the first axis signal of the driving electrode
unit, the second axis signal of the sensing electrode unit and the
second axis signal of the driving electrode unit to the tilt angle
corresponding table; and obtaining a tilt angle of the capacitive
stylus.
[0010] The step of corresponding the first axis signal of the
sensing electrode unit, the first axis signal of the driving
electrode unit, the second axis signal of the sensing electrode
unit and the second axis signal of the driving electrode unit to
the tilt angle corresponding table is carried out by a
micro-processor disposed in the capacitive stylus.
[0011] In a preferred embodiment, after the step of retrieving a
second axis signal of the sensing electrode unit and a second axis
signal of the driving electrode unit, the method further comprises:
retrieving a sum of the first axis signal of the sensing electrode
unit and the first axis signal of the driving electrode unit as a
first axis signal; retrieving a sum of the second axis signal of
the sensing electrode unit and the second axis signal of the
driving electrode unit as a second axis signal; corresponding the
first axis signal and the second axis signal to a direction
corresponding table; and obtaining a tilt direction of the
capacitive stylus.
[0012] In a preferred embodiment, the direction corresponding table
is built-in into the micro-controller of the capacitive stylus, and
the step of corresponding the first axis signal and the second axis
signal to the direction corresponding table is carried out by the
micro-controller.
[0013] In a preferred embodiment, the direction corresponding table
comprises a plurality of directions corresponding to four quadrants
on the touch pad.
[0014] To sum up, the instant disclosure can achieve the technical
effect of detecting the tilt angle and tilt direction of a
capacitive stylus while maintaining the simple and uncomplicated
design of the capacitive stylus and reducing the cost and price of
the capacitive stylus. Therefore, the capacitive stylus and method
of using the same provided by the instant disclosure can be used to
generate and stimulate the effect of spray guns, or the strokes or
spraying effect of paint pens and watercolor pens.
[0015] In order to further understand the techniques, means and
effects of the instant disclosure, the following detailed
descriptions and appended drawings are hereby referred to, such
that, and through which, the purposes, features and aspects of the
instant disclosure can be thoroughly and concretely appreciated;
however, the appended drawings are merely provided for reference
and illustration, without any intention to be used for limiting the
instant disclosure.
BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The accompanying drawings are included to provide a further
understanding of the instant disclosure, and are incorporated in
and constitute a part of this specification. The drawings
illustrate exemplary embodiments of the instant disclosure and,
together with the description, serve to explain the principles of
the instant disclosure.
[0017] FIG. 1 is a circuit block diagram of the first embodiment of
the instant disclosure.
[0018] FIG. 2 is a schematic view of the first embodiment of the
instant disclosure.
[0019] FIG. 3 is a tilt angle corresponding table of the first
embodiment of the instant disclosure.
[0020] FIG. 4 is a direction corresponding table of the first
embodiment of the instant disclosure.
[0021] FIG. 5 is a flow diagram of the first embodiment of the
instant disclosure.
[0022] FIG. 6 is a circuit block diagram of the second embodiment
of the instant disclosure.
DESCRIPTION OF THE EXEMPLARY EMBODIMENTS
[0023] Reference will now be made in detail to the exemplary
embodiments of the instant disclosure, examples of which are
illustrated in the accompanying drawings. Wherever possible, the
same reference numbers are used in the drawings and the description
to refer to the same or like parts.
First Embodiment
[0024] The circuit block diagram in the capacitive stylus 10 is
shown in FIG. 1. The capacitive stylus 10 of the instant disclosure
is acting on a touch pad 20 (as shown in FIG. 2) and comprises a
battery 11, a micro-controller 12, a sensing and driving signals
processing unit 13, a sensing electrode unit 15 (RX) and a driving
electrode unit 16 (TX). The battery 11 is used to provide power to
the capacitive stylus 10. The micro-controller 12 is coupled to the
battery 11 and has a built-in tilt angle corresponding table (as
shown in FIG. 3). The micro-controller 12 is the signal controlling
center of the capacitive stylus 10. The sensing and driving signals
processing unit 13 is coupled to the micro-controller 12 for
executing the transmitting, receiving and processing of the sensing
electrode signals and driving electrode signals, and the signals
are further controlled and analyzed based on the tilt angle
corresponding table by the micro-controller 12.
[0025] The sensing electrode unit 15 is coupled to the sensing and
driving signals processing unit 13. The sensing electrode unit 15
is acting on the touch pad 20 to further generate a first axis
signal of the sensing electrode unit XRX and a second axis signal
of the sensing electrode unit YRX. The driving electrode unit 16 is
coupled to the sensing and driving signals processing unit 13 as
well. The driving electrode unit 16 is acting on the touch pad 20
to generate a first axis signal of the driving electrode unit XTX
and a second axis signal of the driving electrode unit YTX, as
shown in FIG. 2.
[0026] Please refer to FIG. 2. The sensing electrode unit 15 and
the driving electrode unit 16 disposed in the capacitive stylus 10
are acting on the touch pad 20 and generate the first axis signal
of the sensing electrode unit XRX, the second axis signal of the
sensing electrode unit YRX, the first axis signal of the driving
electrode unit XTX and the second axis signal of the driving
electrode unit YTX. It is worthwhile to mention that the four
signals are only examples, and the instant disclosure is not
limited thereto. In other words, the user can increase the numbers
of the sensing and driving electrode signals based on actual need
or increase to a third axis signal.
[0027] In FIG. 2, a three-point position method can be used to
position the component corresponding to the locations of the
sensing electrode unit 15 and driving electrode unit 16 acting on
the touch pad 20 based on the first axis signal of the sensing
electrode unit XRX, the second axis signal of the sensing electrode
unit YRX, the first axis signal of the driving electrode unit XTX
and the second axis signal of the driving electrode unit YTX. The
horizontal axis of the touch pad 20 is labeled as X0, X1, X2, X3
and X4, and the vertical axis of the touch pad 20 is labeled as Y0,
Y1, Y2, Y3 and Y4. These symbols are only used for to exemplify the
bi-axis coordinate of the touch pad 20 and are not used to limit
the scope of the instant disclosure. For example, a third axis (for
example, Z axis) can be used. In addition, the instant disclosure
is not limited to a coordinate using the three-point position
method. Other position methods can be used, such as a method
employing the length of the axis and the included angle.
[0028] When the capacitive stylus 10 is acting on the touch pad 20,
the driving electrode unit 16 can transmit a driving electrode
signal to the touch pad 20, and the driving electrode single can be
transmitted back to the capacitive stylus 10 for processing, or the
driving electrode signal can be processed by the touch pad 20
itself. Similarly, the sensing electrode unit 15 can transmit a
sensing electrode signal to the touch pad 20, and the sensing
electrode signal can be transmitted back to the capacitive stylus
10 for processing, or the sensing electrode signal can be processed
by the touch pad 20 itself. The instant disclosure is not limited
thereto. In other words, the processing of the sensing electrode
signals and the driving electrode signals can be performed in the
capacitive stylus 10 or in the touch pad 20.
[0029] FIG. 3 shows the tilt angle corresponding table built-into
the micro-controller 12 of the capacitive stylus 10. The capacitive
stylus 10 is acting on the touch pad 20 for obtaining the first
axis signal of the sensing electrode unit XRX, the second axis
signal of the sensing electrode unit YRX, the first axis signal of
the driving electrode unit XTX and the second axis signal of the
driving electrode unit YTX, and these signals are transmitted to
the micro-controller 12 after being processed by the sensing and
driving signals processing unit 13. The micro-controller 12
performs the comparison between the signals, obtaining a tilt angle
of the capacitive stylus 10 disposed on the touch pad 20 by
corresponding the signals to the content of the tilt angle
corresponding table, thereby achieving the object of the instant
disclosure. The values of the detected signals are labeled as OO,
**, .DELTA..DELTA. and .quadrature..quadrature., and these values
are only examples of the instant disclosure.
[0030] FIG. 4 is the direction corresponding table built-into the
micro-controller 12 of the capacitive stylus 10. X' is the first
axis signal, Y' is the second axis signal, and the first axis
signal X'=XRX+XTX; and the second axis signal Y'=YRX+YTX. In other
words, the first axis signal X' is related to the first axis signal
of the sensing electrode unit XRX and the first axis signal of the
driving electrode unit XTX and can be the sum of these two signals;
and the second axis signal Y' is related to the second axis signal
of the sensing electrode unit YRX and the second axis signal of the
driving electrode unit YTX and can be the sum of these two signals.
When the first axis signal X' and the second axis signal Y' are
obtained, the tilt direction of the capacitive stylus 10 on the
touch pad 20 can be obtained by corresponding the first axis signal
X' and the second axis signal Y' to the direction corresponding
table. It is worthwhile to mention that the two individual signals
and the use of the sum thereof are only an example. In other words,
the user can employ the difference of the two signals, or obtain a
statement value by multiply or dividing the two signals to obtain
the tilt direction of the capacitive stylus 10 on the touch pad 20.
The instant disclosure is not limited thereto.
[0031] In addition, the direction corresponding table shown in FIG.
4 comprises directions corresponding to the four quadrants on a
plane on which the touch pad 20 is disposed. In other words, the
surface of the touch pad 20 can be divided into four quadrants, and
the locations of the four quadrants correspond to the tilt
direction of the capacitive stylus 10. The directions can also be
defined as east, east-south, east-north . . . west-north or west.
The direction corresponding table is built-into the
micro-controller 12 of the capacitive stylus 10, and the
corresponding process is carried out by the micro-controller 12 for
obtaining the tilt direction.
[0032] FIG. 5 shows the steps of a tilt angle detecting method for
a capacitive stylus, comprising: step S30, turning on the
capacitive stylus and positioning the stylus on a touch pad; step
S31, obtaining a first axis signal of a sensing electrode unit and
a first axis signal of a driving electrode unit; step S32,
obtaining a second axis signal of a sensing electrode unit and a
second axis signal of a driving electrode unit; step S33,
corresponding the first axis signal of the sensing electrode unit,
the first axis signal of the driving electrode unit, the second
axis signal of the sensing electrode unit and the second axis
signal of the driving electrode unit to a tilt angle corresponding
table; and step S34, obtaining the tilt angle of the capacitive
stylus. In other words, the tilt angle of the capacitive stylus 10
acting on the touch pad 20 can be obtained by steps S30 to S34
shown in FIG. 5.
[0033] In addition, after performing step S32, steps S35 to S38 can
be performed. Step S35 comprises obtaining a sum of the first axis
signal of the sensing electrode unit and the first axis signal of
the driving electrode unit as a first axis signal. Step S36
comprises obtaining a sum of the second axis signal of the sensing
electrode unit and the second axis signal of the driving electrode
unit as a second axis signal. Step S37 comprises corresponding the
first axis signal and the second axis signal to a direction
corresponding table. Step S38 comprises obtaining the tilt
direction of the capacitive stylus. The tilt direction of the
capacitive stylus 10 acting on the touch pad 20 can be further
obtained by performing steps S35 to S38 shown in FIG. 5.
[0034] FIG. 6 shows the second embodiment of the capacitive stylus
10a of the instant disclosure. The difference between the
embodiment of FIG. 6 and the embodiment of FIG. 1 is that the
sensing electrode unit 15 and the driving electrode unit 16 in FIG.
6 are replaced by the first sensing electrode unit 17 (RX1) and the
second sensing electrode unit 18 (RX2). The connection between the
first sensing electrode unit 17 and the second sensing electrode
unit 18 is described herein. The first sensing electrode unit 17 is
coupled to the sensing and driving signals processing unit 13, and
the second sensing electrode unit 18 is also coupled to the sensing
and driving signals processing unit 13. In addition, as described
in the first embodiment, the first sensing electrode unit 17 is
acting on the touch pad 20 to generate a first axis signal of the
first sensing electrode unit and a second axis signal of the first
sensing electrode unit; and the second sensing electrode unit 18 is
acting on the touch pad 20 to generate a first axis signal of the
second sensing electrode unit and a second axis signal of the
second sensing electrode unit. The first axis signal of the first
sensing electrode unit, the first axis signal of the second sensing
electrode unit, the second axis signal of the first sensing
electrode unit and the second axis signal of the second sensing
electrode unit are corresponding to a tilt angle corresponding
table in the micro-controller 12 of the capacitive stylus 10a.
Afterward, a tilt angle of the capacitive stylus 10a on the touch
pad 20 can be obtained.
[0035] In the second embodiment shown in FIG. 6, a direction
corresponding table is built-into the micro-controller 12 of the
capacitive stylus 10a for obtaining the tilt direction of the
capacitive stylus 10a on the touch pad 20. The direction
corresponding table can be used to obtain the tilt direction by
receiving a first axis signal and a second axis signal. The first
axis signal is related to the first axis signal of the first
sensing electrode unit and the first axis signal of the second
sensing electrode unit. For example, the first axis signal is the
sum of the first axis signal of the first sensing electrode unit
and the first axis signal of the second sensing electrode unit. The
second axis signal is related to the second axis signal of the
first sensing electrode unit and the second axis signal of the
second sensing electrode unit. For example, the second axis signal
is the sum of the second axis signal of the first sensing electrode
unit and the second axis signal of the second sensing electrode
unit. The direction corresponding table is built-into the
micro-controller 12 of the micro-controller 10a and the
corresponding process is carried out by the micro-controller 12 for
obtaining the tilt direction of the capacitive stylus 10a. The
direction is the directions of the four quadrants on a plane on
which the touch pad 20 is disposed. The directions can also be
defined as east, east-south, east-north . . . west-north or west
directions.
[0036] In addition, in the embodiments of the instant disclosure,
two sensing electrode units and a driving electrode unit can be
used in a capacitive stylus. In other words, the capacitive stylus
can comprise two sensing electrode units (RX1, RX2) and a driving
electrode unit (TX). The numbers of the sensing electrode unit and
the driving electrode unit are not limited in the instant
disclosure.
[0037] In summary, the capacitive stylus and the tilt angle
detecting method for the same can accurately detect the tilt angle
and the tilt direction of the capacitive stylus while maintaining a
simple and uncomplicated design and low cost (price) of the device
by the use of the combination of the sensing electrode unit 15 and
the driving electrode unit 16, or the combination of the first
sensing electrode unit 17 and the second sensing electrode unit 18,
in combination with the tilt angle corresponding table and the tilt
direction corresponding table. Furthermore, the capacitive stylus
provided by the instant disclosure can stimulate the spraying
effect of a spray gun and the effect of paint pens or watercolor
pens.
[0038] The above-mentioned descriptions represent merely the
exemplary embodiment of the present disclosure, without any
intention to limit the scope of the instant disclosure thereto.
Various equivalent changes, alterations or modifications based on
the claims of the instant disclosure are all consequently viewed as
being embraced by the scope of the instant disclosure.
* * * * *