US20130215085A1 - Controlling Method Applied to A Sensing System - Google Patents
Controlling Method Applied to A Sensing System Download PDFInfo
- Publication number
- US20130215085A1 US20130215085A1 US13/850,311 US201313850311A US2013215085A1 US 20130215085 A1 US20130215085 A1 US 20130215085A1 US 201313850311 A US201313850311 A US 201313850311A US 2013215085 A1 US2013215085 A1 US 2013215085A1
- Authority
- US
- United States
- Prior art keywords
- pattern
- sub
- image sensor
- sensing
- pixels
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/04166—Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
- G06F3/03547—Touch pads, in which fingers can move on a surface
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
- G06F3/0421—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by interrupting or reflecting a light beam, e.g. optical touch-screen
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
- G06F3/0428—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by sensing at the edges of the touch surface the interruption of optical paths, e.g. an illumination plane, parallel to the touch surface which may be virtual
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/107—Static hand or arm
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/45—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from two or more image sensors being of different type or operating in different modes, e.g. with a CMOS sensor for moving images in combination with a charge-coupled device [CCD] for still images
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Position Input By Displaying (AREA)
- User Interface Of Digital Computer (AREA)
Abstract
A controlling method applied to a sensing system includes the following step. Whether a specific function is started is determined according to the amount of pixels of a first total pattern acquired by sensing a first object. In an embodiment of the present invention, the step of determining whether the specific function is started according to the amount of pixels of the total pattern is the step of determining whether the specific function is started according to the amount of pixels of the total pattern and the length of time to successively acquire the total pattern. Accordingly, it is more convenient for a user to use the sensing system having the said controlling method.
Description
- This is a division of an application Ser. No. 12/557,466, filed Sep. 10, 2009 which is based upon and claims the benefit of priority from a Taiwan application No. 098116457 filed on May 18, 2009. The entirety of the above-mentioned patent applications are hereby incorporated by reference herein and made a part of this specification.
- 1. Field of the Invention
- The present invention relates to a controlling method and in particular, to a controlling method applied to a sensing system.
- 2. Description of the Prior Art
- A conventional sensing system includes a panel, two image sensors, and a processor. Each of the image sensors senses an area of the panel for acquiring an image, and the processor successively processes for calculating a position of a pointer on the area. The above-mentioned technology has been disclosed in many related patents, such as U.S. Pat. No. 4,782,328, U.S. Pat. No. 6,803,906, and U.S. Pat. No. 6,954,197.
- However, the functions of the abovementioned sensing systems still can not satisfy requirements of designers and therefore, the conventional sensing systems need to be improved.
- The present invention is directed to provide a controlling method applied to a sensing system in which whether a specific function is started is determined according to the amount of pixels of a first total pattern acquired by sensing a first object.
- The present invention provides a controlling method applied to a sensing system including the following step. Whether a specific function is started is determined according to the amount of pixels of a first total pattern acquired.
- In an embodiment of the present invention, the step of determining whether the specific function is started according to the amount of pixels of the first total pattern is the step of determining whether the specific function is started according to the amount of pixels of the first total pattern and the length of time to successively acquire the first total pattern.
- In an embodiment of the present invention, the sensing system includes a panel, a first image sensor, and a second image sensor. The first image sensor and the second image sensor are disposed at the panel. A sensing range of the first image sensor and a sensing range of the second image sensor cover an area of the panel, respectively where the first object located in. The step of determining whether the specific function is started according to the amount of pixels of the first total pattern and the length of time to successively acquire the first total pattern includes the following procedures. First, a procedure (a) is executed. The procedure (a) includes that the first image sensor and the second image sensor simultaneously sense the area for respectively acquiring a first image and a second image. The first image includes a first sub-pattern, and the second image includes a second sub-pattern. The first sub-pattern and the second sub-pattern correspond at that time to the first object, and the first total pattern is composed of the first sub-pattern and the second sub-pattern. Next, a procedure (b) is executed. The procedure (b) includes that whether the amount of pixels of the first total pattern is greater than or equal to a first predetermined value is determined. Next, a procedure (c) is executed. The procedure (c) includes that if the amount of pixels of the first total pattern is greater than or equal to the first predetermined value, whether the length of time to successively acquire the first total pattern is greater than or equal to a second predetermined value is further determined. Next, a procedure (d) is executed. The procedure (d) includes that if the length of time to successively acquire the first total pattern is greater than or equal to the second predetermined value, the specific function is started.
- In an embodiment of the present invention, the controlling method applied to a sensing system further includes the following procedure. A procedure (c1) is executed. The procedure (c1) includes that if the amount of pixels of the first total pattern is smaller than the first predetermined value, a first coordinate of the first object is calculated and output, and the procedure (a) is then executed.
- In an embodiment of the present invention, the controlling method applied to a sensing system further includes the following procedure. A procedure (d1) is executed. The procedure (d1) includes that if the length of time to successively acquire the first total pattern is smaller than the second predetermined value, a first coordinate of the first object, the procedure (a) is executed.
- In an embodiment of the present invention, the first image sensor has a plurality of first sensing pixels suitable for sensing the area, and the second image sensor has a plurality of second sensing pixels suitable for sensing the area. The amount of pixels of the second total pattern is the sum total of the amount of the corresponding first sensing pixels which acquire the third sub-pattern and the amount of the corresponding second sensing pixels which acquire the fourth sub-pattern.
- In an embodiment of the present invention, the sensing system includes a panel, an image sensor, and a reflective mirror element. The image sensor is disposed at the panel. The reflective mirror element is disposed at the panel and mirrors a first area of the panel for forming a second area. A sensing range of the image sensor covers the first area and the second area. The step of determining whether the specific function is started according to the amount of pixels of the first total pattern acquired and the length of time to successively acquire the first total pattern includes the following procedures. First, a procedure (a) is executed. The procedure (a) includes that the image sensor senses the first area and the second area for acquiring a first image. The first image includes a first sub-pattern and a second sub-pattern. The first sub-pattern and the second sub-pattern correspond at that time to the first object, and the first total pattern is composed of the first sub-pattern and the second sub-pattern. Next, a procedure (b) is executed. The procedure (b) includes that whether the amount of pixels of the first total pattern is greater than or equal to a first predetermined value is determined. Next, a procedure (c) is executed. The procedure (c) includes that if the amount of pixels of the first total pattern is greater than or equal to the first predetermined value, whether the length of time to successively acquire the first total pattern is greater than or equal to a second predetermined value is further determined. Next, a procedure (d) is executed. The procedure (d) includes that if the length of time to successively acquire the first total pattern is greater than or equal to the second predetermined value, the specific function is started.
- In an embodiment of the present invention, the controlling method applied to a sensing system further includes the following procedure. A procedure (c1) is executed. The procedure (c1) includes that if the amount of pixels of the first total pattern is smaller than the first predetermined value, a first coordinate of the first object is calculated and output, and the procedure (a) is then executed.
- In an embodiment of the present invention, the controlling method applied to a sensing system further includes the following procedure. A procedure (d1) is executed. The procedure (d1) includes that if the length of time to successively acquire the first total pattern is smaller than the second predetermined value, a first coordinate of the first object is calculated and output, and the procedure (a) is then executed.
- In an embodiment of the present invention, the image sensor has a plurality of sensing pixels suitable for sensing the first area and the second area. The amount of pixels of the second total pattern is the sum total of the amount of the corresponding sensing pixels which acquire the third sub-pattern and the amount of the corresponding sensing pixels which acquire the fourth sub-pattern.
- In an embodiment of the present invention, the specific function is an erasing function.
- The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute part of this specification. The drawings illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.
-
FIG. 1 is a schematic view of a sensing system according to a first embodiment of the present invention. -
FIG. 2A toFIG. 2B are a flow chart of a controlling method applied to the sensing system ofFIG. 1 according to the first embodiment of the present invention. -
FIG. 3A toFIG. 3B are a detailed flow chart of the controlling method ofFIGS. 2A and 2B . -
FIG. 4 is a schematic view of a first image and a second image respectively sensed by the first image sensor and the second image sensor of the sensing system ofFIG. 1 . -
FIG. 5 is a schematic view of a third image and a fourth image sensed by the first image sensor and the second image sensor of the sensing system ofFIG. 1 . -
FIG. 6 is a schematic view of a sensing system according to a second embodiment of the present invention. -
FIG. 7A toFIG. 7B are a flow chart of a controlling method applied to the sensing system ofFIG. 6 according to the second embodiment of the present invention. -
FIG. 8A toFIG. 8B are a detailed flow chart of the controlling method ofFIGS. 7A and 7B . -
FIG. 9 is a schematic view of a first image sensed by the image sensor of the sensing system ofFIG. 6 . -
FIG. 10 is a schematic view of a second image sensed by the image sensor of the sensing system ofFIG. 6 . -
FIG. 1 is a schematic view of a sensing system according to a first embodiment of the present invention. Referring toFIG. 1 , thesensing system 200 of the embodiment includes apanel 210, afirst image sensor 220, asecond image sensor 230 and aprocessor 240. Thepanel 210 has asurface 214 and anarea 212, and thearea 212 is located at thesurface 214. Thearea 212 is a quadrilateral for example. Thefirst image sensor 220 and thesecond image sensor 230 are disposed at thesurface 214 of thepanel 210 and are electrically connected to theprocessor 240. A sensing range of thefirst image sensor 220 and a sensing range of thesecond image sensor 230 cover thearea 212, respectively. In this embodiment, thepanel 210 is a whiteboard or a touch screen for example. - When a user uses an
object 20 which is capable of being sensed by thesensing system 200 such that theobject 20 approaches thearea 212, thefirst image sensor 220 and thesecond image sensor 230 sense thearea 212 respectively and theprocessor 240 calculates a position of theobject 20 according to images sensed by thefirst image sensor 220 and thesecond image sensor 230. The abovementioned technologies can be referred to U.S. Pat. No. 4,782,328 and U.S. Pat. No. 6,803,906 and should not be described in detail herein. In addition, when theobject 20 moves on thearea 212, the movement path will be displayed on thepanel 210 such as a touch screen or a display device (not shown) electrically connected to thepanel 210. -
FIG. 2A toFIG. 2B are a flow chart of a controlling method applied to the sensing system ofFIG. 1 according to the first embodiment of the present invention.FIG. 3A toFIG. 3B are a detailed flow chart of the controlling method ofFIGS. 2A and 2B .FIG. 4 is a schematic view of a first image and a second image respectively sensed by the first image sensor and the second image sensor of the sensing system ofFIG. 1 . Referring toFIGS. 1 , 2A, 2B, 3A, 3B and 4, generally speaking, the controlling method applied to the sensing system includes the step of determining whether a specific function is started according to the size of a first total pattern P1 acquired. In this embodiment, the abovementioned step is the step of determining whether the specific function is started according to the size of the first total pattern P1 acquired and the length of time to successively acquire the first total pattern P1. The description will be given in detail below. - First, a procedure (a) is executed. The procedure (a) includes that the
first image sensor 220 and thesecond image sensor 230 simultaneously sense thearea 212 for respectively acquiring thefirst image 222 and thesecond image 232. Thefirst image 222 includes a first sub-pattern 222 a and thesecond image 232 includes a second sub-pattern 232 a. The first total pattern P1 is composed of the first sub-pattern 222 a and the second sub-pattern 232 a. - In this embodiment, the
first image sensor 220 has a plurality of first sensing pixels (not shown) suitable for sensing thearea 212, and thesecond image sensor 230 has a plurality of second sensing pixels (not shown) suitable for sensing thearea 212. When a first object (not shown) approaches thearea 212 of thepanel 210, the first sensing pixels of thefirst image sensor 220 and the second sensing pixels of thesecond image sensor 230 simultaneously sense thearea 212, and the first sensing pixels of thefirst image sensor 220 acquire thefirst image 222 and the second sensing pixels of thesecond image sensor 230 acquire thesecond image 232. Meanwhile, at least a part of the first sensing pixels sense the first object to acquire the first sub-pattern 222 a and at least a part of the second sensing pixels sense the first object to acquire the second sub-pattern 232 a. That is, at this moment, the first object is adjacent to thearea 212 of thepanel 210 and sensed by thefirst image sensor 220 and thesecond image sensor 230 to be acquired as the first sub-pattern 222 a of thefirst image 222 and the second sub-pattern 232 a of thesecond image 232. - The first object may be a stylus, a finger, a board eraser or a palm. If the first object is a stylus or a finger, the size of the first total pattern P1 is relatively small. The size of the first total pattern P1 is, for example, the sum total of the amount of the corresponding first sensing pixels which acquire the first sub-pattern 222 a and the amount of the corresponding second sensing pixels which acquire the second sub-pattern 232 a. In addition, if the first object is a board eraser or a palm, the size of the first total pattern P1 is relatively large. It should be noted that the first object corresponding to the first sub-pattern 222 a and the second sub-pattern 232 a of
FIG. 4 is, for example, a board eraser. - It should be noted that when a plurality of first objects approach the
area 212 of thepanel 210, for example, when two fingers touch thearea 212 of thepanel 210, thefirst image 222 may include a plurality offirst sub-patterns 222 a and thesecond image 232 may include a plurality of second sub-patterns 232 a. Meanwhile, the first total pattern P1 is composed of the first sub-patterns 222 a and the second sub-patterns 232 a, and the size of the first total pattern P1 is the sum total of the amount of the corresponding first sensing pixels which acquire the first sub-patterns 222 a and the amount of the corresponding second sensing pixels which acquire the second sub-patterns 232 a. - Next, a procedure (b) is executed. The procedure (b) includes that the
processor 240 determines whether the size of the first total pattern P1 is greater than or equal to a first predetermined value. In this embodiment, the first predetermined value may be a predetermined amount of pixels which may be between ½ of the sum total of the amount of the first sensing pixels of thefirst image sensor 220 and the amount of the second sensing pixels of thesecond image sensor 230 and ⅔ of the sum total of the amount of the first sensing pixels of thefirst image sensor 220 and the amount of the second sensing pixels of thesecond image sensor 230. - Next, a procedure (c) is executed. The procedure (c) includes that if the size of the first total pattern P1 is greater than or equal to the first predetermined value, whether the length of time to successively acquire the first total pattern P1 is greater than or equal to a second predetermined value (e.g. 1.5 seconds) is further determined. It should be noted that the procedure (c) of
FIG. 2A may be accomplished by means of the counting manner ofFIG. 3A . For example, thefirst image sensor 220 and thesecond image sensor 230 are designed to sense thearea 212 once every time interval (e.g. 1/240 seconds). Whenever thefirst image sensor 220 and thesecond image sensor 230 sense thearea 212, theprocessor 240 determines whether the size of the first total pattern P1 is greater than or equal to the first predetermined value. If the determination result is positive, the counting value is increased by one and theprocessor 240 further determines whether the counting value is greater than or equal to a third predetermined value, as shown in sub-procedures (c2) and (c3) ofFIGS. 3A and 3B . In this embodiment, the second predetermined value (e.g. 1.5 seconds) is converted to the third predetermined value (e.g. 360 times) by means of the calculation (e.g. 1.5 divided by 1/240). - Next, a procedure (d) is executed. The procedure (d) includes that if the length of time to successively acquire the first total pattern P1 is greater than or equal to the second predetermined value, that is, if the counting value is greater than or equal to the third predetermined value, the
processor 240 starts the specific function, calculates and outputs a first coordinate of the first object which corresponds at that time to the first sub-pattern 222 a and the second sub-pattern 232 a. In this embodiment, at this moment, the first object such as a board eraser or a palm is regarded by thesensing system 200 as an erasing instrument, and the specific function may erase the movement path displayed by thepanel 210 such as a touch screen or by the additional display device. That is, the specific function may be an erasing function. - In addition, after the procedure (b) is executed, the controlling method applied to the sensing system further includes executing procedure (c1). The procedure (c1) includes that if the size of the first total pattern P1 is smaller than the first predetermined value, the
processor 240 calculates and outputs the first coordinate of the first object which corresponds at that time to the first sub-pattern 222 a and the second sub-pattern 232 a and that the controlling process returns to the procedure (a). In this embodiment, at this moment, the first object such as a stylus or a finger is regarded by thesensing system 200 as a pointer. - In addition, after the procedure (c) is executed, the controlling method applied to the sensing system further includes executing procedure (d1). The procedure (d1) includes that if the length of time to successively acquire the first total pattern P1 is smaller than the second predetermined value, that is, if the counting value is smaller the third predetermined value, the
processor 240 calculates and outputs the first coordinate of the first object which corresponds at that time to the first sub-pattern 222 a and the second sub-pattern 232 a and that the controlling process returns to the procedure (a). In this embodiment, at this moment, the first object such as a board eraser or a palm is regarded by thesensing system 200 as a pointer because the length of time to be successively acquired is not long enough. For example, at this moment, the user may make a board eraser or a palm approach thearea 212 by mistake and immediately remove the board eraser or the palm away from thearea 212, and thesensing system 200 is prevented from starting the specific function because of misjudgment. - It should be noted that a first controlling period is composed of the above-mentioned procedures (a)(b)(b1)(c)(d) and (d1). During the first controlling period, each of things capable of being sensed by the
first image sensor 220 and thesecond image sensor 230 is named as the first object. That is, during the first controlling period, the first object is a common name of each of the things capable of being sensed by thefirst image sensor 220 and thesecond image sensor 230. - In the controlling method applied to the sensing system, whether the specific function is started is determined according to the size of the first total pattern P1 acquired. Accordingly, it is more convenient for a user to use the
sensing system 200 having the abovementioned controlling method. In addition, in the controlling method applied to the sensing system, the abovementioned step may be the step of determining whether the specific function is started according to the size of the first total pattern P1 acquired and the length of time to successively acquire the first total pattern P1. Therefore, the possibility that the sensing system starts the specific function because of misjudgment can be reduced. -
FIG. 5 is a schematic view of a third image and a fourth image sensed by the first image sensor and the second image sensor of the sensing system ofFIG. 1 . In this embodiment, after the procedure (d) is executed, the controlling method applied to the sensing system further includes the following procedures. Referring toFIGS. 1 , 2A, 2B, 3A, 3B and 5, procedure (e) is executed. The procedure (e) includes that thefirst image sensor 220 and thesecond image sensor 230 simultaneously sense thearea 212 for respectively acquiring thethird image 224 and thefourth image 234. Thethird image 224 includes a third sub-pattern 224 a, and thefourth image 234 includes a fourth sub-pattern 234 a. A second total pattern P2 is composed of the third sub-pattern 224 a and the fourth sub-pattern 234 a. It should be noted that thethird image 224 and thefourth image 234 correspond at that time to a second object adjacent to thearea 212. That is, at this moment, the second object is adjacent to thearea 212 of thepanel 210 and sensed by thefirst image sensor 220 and thesecond image sensor 230 to be acquired as the third sub-pattern 224 a of thethird image sensor 224 and the fourth sub-pattern 234 a of thefourth image sensor 234. - The second object may be a stylus, a finger, a board eraser or a palm. It should be noted that the second object corresponding to the third sub-patter 224 a and the fourth sub-pattern 234 a of
FIG. 5 is, for example, a stylus. - Next, a procedure (f) is executed. The procedure (f) includes that whether the size of the second total pattern P2 is smaller than the first predetermined value is determined. The size of the second total pattern P2 is, for example, the sum total of the amount of the corresponding first sensing pixels which acquire the third sub-pattern 224 a and the amount of the corresponding second sensing pixels which acquire the fourth sub-pattern 234 a.
- Next, a procedure (g) is executed. The procedure (g) includes that if the size of the second total pattern P2 is smaller than the first predetermined value, whether the length of time to successively acquire the second total pattern P2 is greater than or equal to the second predetermined value is further determined. It should be noted that the procedure (g) of
FIG. 2B may be accomplished by means of the counting manner ofFIG. 3B . For example, whenever thefirst image sensor 220 and thesecond image sensor 230 sense thearea 212, theprocessor 240 determines whether the size of the second total pattern P2 is smaller than the first predetermined value. If the determination result is positive, the counting value is increased by one and theprocessor 240 further determines whether the counting value is greater than or equal to the third predetermined value, as shown in sub-procedures (g2) and (g3) ofFIGS. 3A and 3B . - Next, a procedure (h) is executed. The procedure (h) includes that if the length of time to successively acquire the second total pattern P2 is greater than or equal to the second predetermined value, that is, if the counting value is greater than or equal to the third predetermined value, the
processor 240 ends the specific function, calculates and outputs a second coordinate of the second object which corresponds at that time to the third sub-pattern 224 a and the fourth sub-pattern 234 a. In this embodiment, at this moment, the second object such as a stylus or a finger is regarded by thesensing system 200 as a pointer. - In addition, after the procedure (f) is executed, the controlling method applied to the sensing system further includes executing procedure (g1). The procedure (g1) includes that if the size of the second total pattern P2 is greater than or equal to the first predetermined value, the
processor 240 successively starts the specific function, calculates and outputs the second coordinate of the second object which corresponds at that time to the third sub-pattern 224 a and the fourth sub-pattern 234 a and that the controlling process returns to the procedure (e). In this embodiment, at this moment, the second object such as a board eraser or a palm is regarded by thesensing system 200 as an erasing instrument. - In addition, after the procedure (g) is executed, the controlling method applied to the sensing system further includes executing procedure (h1). The procedure (h1) includes that if the length of time to successively acquire the first total pattern P2 is smaller than the second predetermined value, that is, if the counting value is smaller the third predetermined value, the
processor 240 successively starts the specific function, calculates and outputs the second coordinate of the second object which corresponds at that time to the third sub-pattern 224 a and the fourth sub-pattern 234 a and that the controlling process returns to the procedure (e). In this embodiment, at this moment, the second object is such as a stylus is regarded by thesensing system 200 as an erasing instrument because the length of time to be successively acquired is not long enough. For example, at this moment, the user may make a stylus or a finger approach thearea 212 by mistake and immediately remove the stylus or the finger away from thearea 212, and thesensing system 200 is prevented from ending the specific function because of misjudgment. - It should be noted that the abovementioned a second controlling period is composed of procedures (e)(f)(g1)(g)(h) and (h1). During the second controlling period, each of things capable of being sensed by the
first image sensor 220 and thesecond image sensor 230 is named as the second object. That is, during the second controlling period, the second object is a common name of each of the things capable of being sensed by thefirst image sensor 220 and thesecond image sensor 230. - It should be noted that in practice, before the procedure (a) of the first controlling period of the controlling method applied to the
sensing system 200 is executed, the user may use stylus such another specific function (regarded as the second specific function) of thesensing system 200 is performed. The second specific function is, for example, the handwriting function or the drawing function. Next, after the specific function such as the erasing function (regarded as the first specific function which is different from the second specific function) is started for a period of time (e.g. the user uses a board eraser) and then is ended (e.g., the user removes the board eraser and picks up the stylus), the second specific function is started again. That is, the second specific function is a predetermined function of thesensing system 200. -
FIG. 6 is a schematic view of a sensing system according to a second embodiment of the present invention. Thesensing system 300 includes apanel 310, animage sensor 320, areflective mirror element 330 and aprocessor 340. Theimage sensor 320 is disposed at thepanel 310. Thereflective mirror element 330 is disposed at thepanel 310 and areflective mirror plane 332 of thereflective mirror element 330 mirrors afirst area 312 of thepanel 312 for forming asecond area 312′. Theimage sensor 320 faces thereflective mirror element 330 and is electrically connected to theprocessor 340. A sensing range of theimage sensor 320 covers thefirst area 312 and thesecond area 312′. That is, thesecond image sensor 230 of the first embodiment is omitted in thesensing system 300 of this embodiment and thereflective mirror element 330 is added in thesensing system 300 of this embodiment. - When a user uses an
object 30 which is capable of being sensed by thesensing system 300 such that theobject 20 approaches to thearea 312, theobject 30 is mirrored by thereflective mirror element 330 to form amirror image 30′. Theimage sensor 320 senses thefirst area 312 and thesecond area 312′ and theprocessor 340 calculates a position of theobject 30 according to images sensed by theimage sensor 320. The abovementioned technologies can be referred to Taiwan patent application No. 097126033, Taiwan patent application No. 097142355 and Taiwan patent application No. 098100969 and U.S. patent application Ser. No. 12/249,222, U.S. patent application Ser. No. 12/334,449 and U.S. patent application Ser. No. 12/422,191, which respectively correspond to the abovementioned Taiwan patent applications, and should not be described in detail herein. -
FIG. 7A toFIG. 7B are a flow chart of a controlling method applied to the sensing system ofFIG. 6 according to the second embodiment of the present invention.FIG. 8A toFIG. 8B are a detailed flow chart of the controlling method ofFIGS. 7A and 7B .FIG. 9 is a schematic view of a first image sensed by the image sensor of the sensing system ofFIG. 6 .FIG. 10 is a schematic view of a second image sensed by the image sensor of the sensing system ofFIG. 6 . Referring toFIGS. 6 to 10 , the difference between the controlling method applied to the sensing system of this embodiment and the controlling method applied to the sensing system of the first embodiment is that the procedures (a) and (e) of this embodiment are different from the procedures (a) and (e) of the first embodiment. - In the procedure (a) of this embodiment, the
image sensor 320 senses thefirst area 312 and thesecond area 312′ for acquiring afirst image 322. Thefirst image 322 includes a first sub-pattern 322 a and a second sub-pattern 322 b, and a first total pattern P3 is composed of the first sub-pattern 322 a and the second sub-pattern 322 b. - In this embodiment, the
first image sensor 320 has a plurality of sensing pixels (not shown) suitable for sensing thefirst area 312 and thesecond area 312′. When a first object (not shown) approaches thefirst area 312 of thepanel 310, the sensing pixels of theimage sensor 320 sense thefirst area 312 and thesecond area 312′, and the sensing pixels of theimage sensor 320 acquire thefirst image 322. Meanwhile, at least a part of the sensing pixels sense the first object to acquire the first sub-pattern 322 a, and at least a part of the sensing pixels sense the mirror image of the first object to acquire the second sub-pattern 322 b. That is, at this moment, the first object is adjacent to thefirst area 312 of thepanel 310, and the first object and its mirror image are sensed by theimage sensor 320 to be acquired as the first sub-pattern 322 a and the second sub-pattern 322 b of thefirst image 322. - The size of the first total pattern P3 is, for example, the sum total of the amount of the corresponding sensing pixels which acquire the first sub-pattern 322 a and the amount of the corresponding sensing pixels which acquire the second sub-pattern 322 b. It should be noted that the first object corresponding to the first sub-pattern 322 a of
FIG. 9 is, for example, a board eraser. - In the procedure (e) of this embodiment, the
image sensor 320 senses thefirst area 312 and thesecond area 312′ for acquiring asecond image 324. Thefirst image 324 includes a third sub-pattern 324 a and a fourth sub-pattern 324 b, and a second total pattern P4 is composed of the third sub-pattern 324 a and the fourth sub-pattern 324 b. The third sub-pattern 324 a and the fourth sub-pattern 324 b correspond at that time to a second object adjacent to thefirst area 312 and a mirror image of the second object, respectively. That is, at this moment, the second object is adjacent to thefirst area 312 of thepanel 310, and the second object and its mirror image are sensed by theimage sensor 320 to be acquired as the third sub-pattern 324 a and the fourth sub-pattern 324 b of thesecond image 324. - The size of the second total pattern P4 is, for example, the sum total of the amount of the corresponding sensing pixels which acquire the third sub-pattern 324 a and the amount of the corresponding sensing pixels which acquire the fourth sub-pattern 324 b. It should be noted that the second object corresponding to the third sub-patter 324 a of
FIG. 10 is, for example, a stylus. - In addition, the first predetermined value of this embodiment may be a predetermined amount of pixels which may be between ½ of the amount of the sensing pixels of the
image sensor 320 and ⅔ of the amount of the sensing pixels of theimage sensor 320. - According to the mentioned above, the controlling method applied to the sensing system of the embodiment of the present invention has at least one of the following or other advantages:
- 1. In the controlling method applied to the sensing system, whether the specific function is started is determined according to the size of the first total pattern acquired. Accordingly, it is more convenient for a user to use the sensing system having the abovementioned controlling method.
- 2. In the controlling method applied to the sensing system, the abovementioned step is the step of determining whether the specific function is started according to the size of the first total pattern acquired and the length of time to successively acquire the first total pattern. Therefore, the possibility that the sensing system starts the specific function because of misjudgment can be reduced.
- The above description is given by way of example, and not limitation. Given the above disclosure, one skilled in the art could devise variations that are within the scope and spirit of the invention disclosed herein, including configurations ways of the recessed portions and materials and/or designs of the attaching structures. Further, the various features of the embodiments disclosed herein can be used alone, or in varying combinations with each other and are not intended to be limited to the specific combination described herein. Thus, the scope of the claims is not to be limited by the illustrated embodiments.
Claims (13)
1. A controlling method applied to a sensing system, comprising:
determining whether a specific function is started according to the amount of pixels of a first total pattern acquired by sensing a first object.
2. The controlling method applied to a sensing system as claimed in claim 1 , wherein the step of determining whether the specific function is started according to the amount of pixels of the first total pattern is the step of:
determining whether the specific function is started according to the amount of pixels of the first total pattern and the length of time to successively acquire the first total pattern.
3. The controlling method applied to a sensing system as claimed in claim 2 , wherein the sensing system comprises a panel, a first image sensor and a second image sensor, the first image sensor and the second image sensor are disposed at the panel, a sensing range of the first image sensor and a sensing range of the second image sensor cover an area of the panel where the first object located in, respectively, and the step of determining whether the specific function is started according to the amount of pixels of the first total pattern and the length of time to successively acquire the first total pattern comprises:
(a) the first image sensor and the second image sensor simultaneously sensing the area for respectively acquiring a first image and a second image, wherein the first image comprises a first sub-pattern, the second image comprises a second sub-pattern, the first sub-pattern and the second sub-pattern correspond at that time to the first object, and the first total pattern is composed of the first sub-pattern and the second sub-pattern;
(b) determining whether the amount of pixels of the first total pattern is greater than or equal to a first predetermined value;
(c) further determining whether the length of time to successively acquire the first total pattern is greater than or equal to a second predetermined value if the amount of pixels of the first total pattern is greater than or equal to the first predetermined value; and
(d) starting the specific function if the length of time to successively acquire the first total pattern is greater than or equal to the second predetermined value.
4. The controlling method applied to a sensing system as claimed in claim 3 , further comprising:
(c1) calculating and outputting a first coordinate of the first object and returning to the procedure (a) if the amount of pixels of the first total pattern is smaller than the first predetermined value.
5. The controlling method applied to a sensing system as claimed in claim 3 , further comprising:
(d1) calculating and outputting a first coordinate of the first object and returning to the procedure (a) if the length of time to successively acquire the first total pattern is smaller than the second predetermined value.
6. The controlling method applied to a sensing system as claimed in claim 3 , wherein the first image sensor has a plurality of first sensing pixels suitable for sensing the area, the second image sensor has a plurality of second sensing pixels suitable for sensing the area, and the amount of pixels of the first total pattern is the sum total of the amount of the corresponding first sensing pixels which acquire the first sub-pattern and the amount of the corresponding second sensing pixels which acquire the second sub-pattern.
7. The controlling method applied to a sensing system as claimed in claim 2 , wherein the sensing system comprises a panel, an image sensor, and a reflective mirror element, the image sensor is disposed at the panel, the reflective mirror element is disposed at the panel and mirrors a first area of the panel for forming a second area, a sensing range of the image sensor covers the first area and the second area, and the step of determining whether the specific function is started according to the amount of pixels of the first total pattern and the length of time to successively acquire the first total pattern comprises:
(a) the image sensor sensing the first area and the second area for acquiring a first image, wherein the first image comprises a first sub-pattern and a second sub-pattern, the first sub-pattern and the second sub-pattern correspond at that time to the first object, and the first total pattern is composed of the first sub-pattern and the second sub-pattern;
(b) determining whether the amount of pixels of the first total pattern is greater than or equal to a first predetermined value;
(c) further determining whether the length of time to successively acquire the first total pattern is greater than or equal to a second predetermined value if the amount of pixels of the first total pattern is greater than or equal to the first predetermined value; and
(d) starting the specific function if the length of time to successively acquire the first total pattern is greater than or equal to the second predetermined value.
8. The controlling method applied to a sensing system as claimed in claim 7 , further comprising:
(c1) calculating and outputting a first coordinate of the first object and returning to the procedure (a) if the amount of pixels of the first total pattern is smaller than the first predetermined value.
9. The controlling method applied to a sensing system as claimed in claim 7 , further comprising:
(d1) calculating and outputting a first coordinate of the first object and returning to the procedure (a) if the length of time to successively acquire the first total pattern is smaller than the second predetermined value.
10. The controlling method applied to a sensing system as claimed in claim 7 , wherein the image sensor has a plurality of sensing pixels suitable for sensing the first area and the second area, and the amount of pixels of the first total pattern is the sum total of the amount of the corresponding sensing pixels which acquire the first sub-pattern and the amount of the corresponding sensing pixels which acquire the second sub-pattern.
11. The controlling method applied to a sensing system as claimed in claim 1 , wherein the specific function is an erasing function.
12. The controlling method applied to a sensing system as claimed in claim 3 , wherein the procedure (d) further comprises calculating and outputting a first coordinate of the first object.
13. The controlling method applied to a sensing system as claimed in claim 7 , wherein the procedure (d) further comprises calculating and outputting a first coordinate of the first object.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/850,311 US20130215085A1 (en) | 2009-05-18 | 2013-03-26 | Controlling Method Applied to A Sensing System |
US15/214,472 US20160328088A1 (en) | 2009-05-18 | 2016-07-20 | Controlling method for a sensing system |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW098116457 | 2009-05-18 | ||
TW098116457A TWI452488B (en) | 2009-05-18 | 2009-05-18 | Controlling method applied to a sensing system |
US12/557,466 US8629854B2 (en) | 2009-05-18 | 2009-09-10 | Controlling method applied to a sensing system |
US13/850,311 US20130215085A1 (en) | 2009-05-18 | 2013-03-26 | Controlling Method Applied to A Sensing System |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/557,466 Division US8629854B2 (en) | 2009-05-18 | 2009-09-10 | Controlling method applied to a sensing system |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15/214,472 Continuation US20160328088A1 (en) | 2009-05-18 | 2016-07-20 | Controlling method for a sensing system |
Publications (1)
Publication Number | Publication Date |
---|---|
US20130215085A1 true US20130215085A1 (en) | 2013-08-22 |
Family
ID=43068122
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/557,466 Expired - Fee Related US8629854B2 (en) | 2009-05-18 | 2009-09-10 | Controlling method applied to a sensing system |
US13/850,311 Abandoned US20130215085A1 (en) | 2009-05-18 | 2013-03-26 | Controlling Method Applied to A Sensing System |
US15/214,472 Abandoned US20160328088A1 (en) | 2009-05-18 | 2016-07-20 | Controlling method for a sensing system |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/557,466 Expired - Fee Related US8629854B2 (en) | 2009-05-18 | 2009-09-10 | Controlling method applied to a sensing system |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15/214,472 Abandoned US20160328088A1 (en) | 2009-05-18 | 2016-07-20 | Controlling method for a sensing system |
Country Status (3)
Country | Link |
---|---|
US (3) | US8629854B2 (en) |
JP (1) | JP5554969B2 (en) |
TW (1) | TWI452488B (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8937612B2 (en) * | 2010-02-04 | 2015-01-20 | Hong Kong Applied Science And Technology Research Institute Co. Ltd. | Coordinate locating method, coordinate locating device, and display apparatus comprising the coordinate locating device |
TWI456464B (en) * | 2011-12-21 | 2014-10-11 | Pixart Imaging Inc | Optical touch system |
CN103064613A (en) * | 2012-12-13 | 2013-04-24 | 鸿富锦精密工业(深圳)有限公司 | Method and device for erasing contents of touch screen |
GB201409036D0 (en) | 2014-05-21 | 2014-07-02 | Wellstream Int Ltd | Detection apparatus and method |
US11036338B2 (en) * | 2018-04-20 | 2021-06-15 | Beechrock Limited | Touch object discrimination by characterizing and classifying touch events |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050226505A1 (en) * | 2004-03-31 | 2005-10-13 | Wilson Andrew D | Determining connectedness and offset of 3D objects relative to an interactive surface |
US20080259053A1 (en) * | 2007-04-11 | 2008-10-23 | John Newton | Touch Screen System with Hover and Click Input Methods |
US20090251425A1 (en) * | 2008-04-08 | 2009-10-08 | Lg Display Co., Ltd. | Multi-touch system and driving method thereof |
US20100001849A1 (en) * | 2008-07-01 | 2010-01-07 | Lee Jin Baek | Portable terminal and driving method of messenger program in portable terminal |
Family Cites Families (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4782328A (en) | 1986-10-02 | 1988-11-01 | Product Development Services, Incorporated | Ambient-light-responsive touch screen data input method and system |
DE4290947T1 (en) * | 1991-04-08 | 1993-04-01 | Hitachi, Ltd., Tokio/Tokyo, Jp | |
JP3624070B2 (en) * | 1997-03-07 | 2005-02-23 | キヤノン株式会社 | Coordinate input device and control method thereof |
JPH1185377A (en) * | 1997-09-02 | 1999-03-30 | Fujitsu Ltd | Information display with optical position detector |
JP3933278B2 (en) | 1997-11-04 | 2007-06-20 | 株式会社ワコム | Position detecting method and apparatus capable of detecting position indicator |
JP4033582B2 (en) * | 1998-06-09 | 2008-01-16 | 株式会社リコー | Coordinate input / detection device and electronic blackboard system |
JP4052498B2 (en) * | 1999-10-29 | 2008-02-27 | 株式会社リコー | Coordinate input apparatus and method |
US20040207606A1 (en) * | 1999-11-08 | 2004-10-21 | Atwood Stephen P. | Sensing the size of a touch point in a touch-sensitive panel employing resistive membranes |
JP3819654B2 (en) * | 1999-11-11 | 2006-09-13 | 株式会社シロク | Optical digitizer with indicator identification function |
US6803906B1 (en) | 2000-07-05 | 2004-10-12 | Smart Technologies, Inc. | Passive touch system and method of detecting user input |
JP2003076484A (en) * | 2001-08-30 | 2003-03-14 | Ricoh Co Ltd | Method of calculating size of coordinate indicating object, coordinate input device, and program for calculating size of coordinate indicating object |
KR100472438B1 (en) * | 2001-11-14 | 2005-02-21 | 삼성전자주식회사 | luminance attenuator apparatus and method in the PDP |
US6954197B2 (en) | 2002-11-15 | 2005-10-11 | Smart Technologies Inc. | Size/scale and orientation determination of a pointer in a camera-based touch system |
JP2005025415A (en) * | 2003-06-30 | 2005-01-27 | Sony Corp | Position detector |
EP1714271A2 (en) * | 2004-02-12 | 2006-10-25 | Atrua Technologies, Inc. | System and method of emulating mouse operations using finger image sensors |
US7460110B2 (en) * | 2004-04-29 | 2008-12-02 | Smart Technologies Ulc | Dual mode touch system |
US7619616B2 (en) | 2004-12-21 | 2009-11-17 | Microsoft Corporation | Pressure sensitive controls |
WO2007035655A2 (en) * | 2005-09-16 | 2007-03-29 | The Trustees Of Columbia University In The City Of New York | Using overlay networks to counter denial-of-service attacks |
US20090090569A1 (en) * | 2005-10-13 | 2009-04-09 | Cho-Yi Lin | Sensing System |
EP1980935A1 (en) * | 2006-02-03 | 2008-10-15 | Matsushita Electric Industrial Co., Ltd. | Information processing device |
JP2007213135A (en) * | 2006-02-07 | 2007-08-23 | Ricoh Elemex Corp | Coordinate detection device and coordinate detection method |
JP4750650B2 (en) * | 2006-08-22 | 2011-08-17 | リコーエレメックス株式会社 | Drawing display device, drawing display method and program |
TW200816062A (en) * | 2006-09-29 | 2008-04-01 | Ibm | Video-based handwriting input method and apparatus |
JP5391519B2 (en) | 2007-02-06 | 2014-01-15 | 三菱電機株式会社 | Image display device |
JP2009003662A (en) * | 2007-06-21 | 2009-01-08 | Hitachi Software Eng Co Ltd | Electronic board system |
US8059101B2 (en) * | 2007-06-22 | 2011-11-15 | Apple Inc. | Swipe gestures for touch screen keyboards |
US8270669B2 (en) | 2008-02-06 | 2012-09-18 | Denso Corporation | Apparatus for extracting operating object and apparatus for projecting operating hand |
-
2009
- 2009-05-18 TW TW098116457A patent/TWI452488B/en not_active IP Right Cessation
- 2009-09-10 US US12/557,466 patent/US8629854B2/en not_active Expired - Fee Related
- 2009-11-18 JP JP2009262734A patent/JP5554969B2/en not_active Expired - Fee Related
-
2013
- 2013-03-26 US US13/850,311 patent/US20130215085A1/en not_active Abandoned
-
2016
- 2016-07-20 US US15/214,472 patent/US20160328088A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050226505A1 (en) * | 2004-03-31 | 2005-10-13 | Wilson Andrew D | Determining connectedness and offset of 3D objects relative to an interactive surface |
US20080259053A1 (en) * | 2007-04-11 | 2008-10-23 | John Newton | Touch Screen System with Hover and Click Input Methods |
US20090251425A1 (en) * | 2008-04-08 | 2009-10-08 | Lg Display Co., Ltd. | Multi-touch system and driving method thereof |
US20100001849A1 (en) * | 2008-07-01 | 2010-01-07 | Lee Jin Baek | Portable terminal and driving method of messenger program in portable terminal |
Also Published As
Publication number | Publication date |
---|---|
TWI452488B (en) | 2014-09-11 |
JP5554969B2 (en) | 2014-07-23 |
US20160328088A1 (en) | 2016-11-10 |
JP2010267245A (en) | 2010-11-25 |
TW201042504A (en) | 2010-12-01 |
US8629854B2 (en) | 2014-01-14 |
US20100289773A1 (en) | 2010-11-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20160328088A1 (en) | Controlling method for a sensing system | |
JP5412227B2 (en) | Video display device and display control method thereof | |
US11086412B2 (en) | Method for determining display orientation and electronic apparatus using the same and computer readable recording medium | |
US20090183930A1 (en) | Touch pad operable with multi-objects and method of operating same | |
US10345912B2 (en) | Control method, control device, display device and electronic device | |
JP5802247B2 (en) | Information processing device | |
US9727147B2 (en) | Unlocking method and electronic device | |
US10168769B2 (en) | Input apparatus, input method, and program | |
US20130120289A1 (en) | Information processing apparatus and method of controlling same | |
CN111142674B (en) | Control method and electronic equipment | |
US20150241968A1 (en) | Method for Processing Information and Electronic Device | |
JP2007141177A (en) | Operation input device | |
JP5664303B2 (en) | Computer apparatus, input system, and program | |
JP2016103137A (en) | User interface system, image processor and control program | |
WO2018076720A1 (en) | One-hand operation method and control system | |
US9110588B2 (en) | Optical touch device and method for detecting touch point | |
US20140055415A1 (en) | Touch recognition system and method for touch screen | |
JP5947999B2 (en) | Method, electronic device and computer program for improving operation accuracy for touch screen | |
US9229586B2 (en) | Touch system and method for determining the distance between a pointer and a surface | |
JP2007080187A (en) | Operation input device | |
CN111886567B (en) | Operation input device, operation input method, and computer-readable recording medium | |
JP5678697B2 (en) | Computer apparatus, input system, and program | |
JP6709022B2 (en) | Touch detection device | |
TWI626423B (en) | Tapping detecting device, tapping detecting method and smart projecting system using the same | |
JP2014049023A (en) | Input device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: PIXART IMAGING INC., TAIWAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:LIN, CHO-YI;LU, CHIH-HUNG;REEL/FRAME:030081/0903 Effective date: 20130319 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |