Patents by Inventor Tsung-Fa Wang

Tsung-Fa Wang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20180212620
    Abstract: An amending circuit of correcting bouncing misjudgment of a keyswitch includes a comparing unit, a predetermined voltage generating unit and a controlling unit. The comparing unit has a first input terminal, a second input terminal and an output terminal. The first input terminal is adapted to receive a triggering signal generated by the keyswitch. The predetermined voltage generating unit is electrically connected to the second input terminal and adapted to generate a first predetermined voltage. The controlling unit is electrically connected to the output terminal. The controlling unit is adapted to determine whether to execute polling application according to a comparison result of the comparing unit, and to generate a confirming signal while a polling result of the polling application is kept at a specific level. The confirming signal is used by an external processor to confirm that the keyswitch is actually triggered.
    Type: Application
    Filed: May 16, 2017
    Publication date: July 26, 2018
    Inventors: Tsung-Fa Wang, Shih-Wei Kuo
  • Publication number: 20180151308
    Abstract: A universal circuit board compatible for a mechanical keyswitch and an optical keyswitch includes a main body, a plurality of conductive terminals and an opening structure. The main body has a first surface and a second surface opposite to each other. The plurality of conductive terminals is disposed on the first surface of the main body. The opening structure is formed on the main body and pierces through the first surface and the second surface. The opening structure can be inserted by an axle body of the mechanical keyswitch or be an optical transmission channel of the optical keyswitch.
    Type: Application
    Filed: April 19, 2017
    Publication date: May 31, 2018
    Inventors: Tsung-Fa Wang, Shih-Wei Kuo
  • Publication number: 20180136741
    Abstract: A method of adjusting an optical setting of an optical input device includes: determining a desired level of an intensity of captured reflected light reflected from a tracking surface; determining whether a surface changing event occurs; and adjusting an optical setting of the optical input device according to the desired level of the intensity of the captured reflected light if it is determined the surface changing event occurs.
    Type: Application
    Filed: December 26, 2017
    Publication date: May 17, 2018
    Inventor: Tsung-Fa Wang
  • Publication number: 20180136739
    Abstract: A method for configuring an optical input device is provided. The optical input device includes a movable unit and a sensing device. The movable unit is arranged to move within a predetermined range. The sensing device is arranged to detect a position within the predetermined range at which the movable unit is located. The method includes: adjusting an optical setting of the sensing device to obtain an optimal dynamic range of the sensing device; and configuring a valid input threshold for the optical input device based on the optimal dynamic range.
    Type: Application
    Filed: June 4, 2017
    Publication date: May 17, 2018
    Inventors: Tsung-Fa Wang, Yen-Min Chang, Shih-Wei Kuo
  • Publication number: 20180137997
    Abstract: A keyboard has a keyswitch capable of showing its movement depth. The keyswitch includes a substrate, a lifting unit, a multistage positioning component and a keycap. The lifting unit is disposed on the substrate. The multistage positioning component is disposed on the substrate and has a plurality of first actuating portions. The keycap is connected with the lifting unit and adjacent by the multistage positioning component. The keycap has a second actuating portion. The keycap is moved relative to the substrate via the lifting unit, and the second actuating portion can contact against one of the plurality of first actuating portions to generate a feedback signal.
    Type: Application
    Filed: April 20, 2017
    Publication date: May 17, 2018
    Inventors: Tsung-Fa Wang, Shih-Wei Kuo
  • Publication number: 20170302275
    Abstract: An electronic switch with force feedback function includes a base, an actuating component and a. The actuating component is movably connected to the base, and includes a. The magnetic field generating module is disposed on the base, and provides a magnetic repulsive force to the magnetic unit for force feedback while the actuating component moves close to the base.
    Type: Application
    Filed: June 7, 2016
    Publication date: October 19, 2017
    Inventors: Tsung-Fa Wang, Shih-Wei Kuo
  • Publication number: 20170244409
    Abstract: A keyboard with a distance detecting function includes a plurality of keyswitches, and each keyswitch includes a keycap, a base, a supporting component, a recovering component and a distance detecting unit. The base has a guide slot structure. The supporting component has a first end connecting to the keycap, and a second end movably assembled with the guide slot structure. The recovering component is disposed between the supporting component and the guide slot structure. The distance detecting unit is detachably disposed on the base, and adapted to detect a movement of the keycap relative to the base for determining whether the keyswitch is actuated.
    Type: Application
    Filed: June 7, 2016
    Publication date: August 24, 2017
    Inventors: Tsung-Fa Wang, Yen-Min Chang, Feng-Cheng Yang, Shih-Wei Kuo
  • Patent number: 9742402
    Abstract: A keyboard with a distance detecting function includes a plurality of keyswitches, and each keyswitch includes a keycap, a base, a supporting component, a recovering component and a distance detecting unit. The base has a guide slot structure. The supporting component has a first end connecting to the keycap, and a second end movably assembled with the guide slot structure. The recovering component is disposed between the supporting component and the guide slot structure. The distance detecting unit is detachably disposed on the base, and adapted to detect a movement of the keycap relative to the base for determining whether the keyswitch is actuated.
    Type: Grant
    Filed: June 7, 2016
    Date of Patent: August 22, 2017
    Assignee: PixArt Imaging Inc.
    Inventors: Tsung-Fa Wang, Yen-Min Chang, Feng-Cheng Yang, Shih-Wei Kuo
  • Patent number: 9442583
    Abstract: An optical mouse apparatus includes a light source circuit, a sensing circuit, and a processing circuit. The light source circuit is used for generating and emitting a light signal onto a surface so as to generate a light reflected signal. The sensing circuit is used for estimating an image offset of the optical mouse apparatus. The processing circuit is coupled to the light source circuit and the sensing circuit and used for generating and outputting a control signal to a terminal according to the image offset outputted by the sensing circuit. The sensing circuit is further used for detecting at least one of a moving speed or an offset direction of the image offset of the optical mouse apparatus, so as to dynamically determine whether to compress data of the image offset outputted to the processing circuit, for reducing data amount read by the processing circuit.
    Type: Grant
    Filed: July 24, 2013
    Date of Patent: September 13, 2016
    Assignee: PixArt Imaging Inc.
    Inventors: Yung-Chang Lin, Tsung-Fa Wang, Ching-Lin Chung
  • Patent number: 9383866
    Abstract: An image sensing apparatus, comprising: a control unit; and an image sensor, wherein the control unit controls the image sensor to utilize a first image sensing region to sense a first image to output a first image signal in a first mode, wherein the control unit controls the image sensor to utilize a second image sensing region to sense a second image to output a second image signal in a second mode. The first image sensing region is smaller than a total image sensing region of the image sensor, and the second image sensing region is smaller than the first image sensing region.
    Type: Grant
    Filed: June 5, 2013
    Date of Patent: July 5, 2016
    Assignee: PixArt Imaging Inc.
    Inventors: Yung-Chang Lin, Tsung-Fa Wang, Ching-Lin Chung
  • Patent number: 9335841
    Abstract: A computer readable media having at least one program code recorded thereon. An interference image determining method can be performed when the program code is read and executed. The interference image determining method comprises: (a) controlling a light source to illuminate an object on a detecting surface to generate an image; (b) controlling a sensor to catch a current frame of the image; (c) utilizing an image characteristic included in the current frame to determine a interference image part of the current frame; and (d) updating a defined interference image according to the determined interference image part.
    Type: Grant
    Filed: July 30, 2012
    Date of Patent: May 10, 2016
    Assignee: PixArt Imaging Inc.
    Inventors: Hsin-Chia Chen, Yen-Min Chang, Yu-Hao Huang, Wen-Han Yao, Ching-Lin Chung, Yung-Chang Lin, Tsung-Fa Wang, Ming-Tsan Kao
  • Patent number: 9274999
    Abstract: There is provided a communication system including a transmission interface, a master device and a slave device. The transmission interface includes a TR/ACK channel configured to transmit a trigger signal and an acknowledge signal and a DA channel configured to transmit a normal data or a simplified data. The master device sends the trigger signal via the TR/ACK channel before data transmission begins. The slave device sends the normal data or the simplified data to the master device via the DA channel after receiving the trigger signal.
    Type: Grant
    Filed: November 20, 2012
    Date of Patent: March 1, 2016
    Assignee: PIXART IMAGING INC.
    Inventors: Chun-Wei Chen, Yung-Chang Lin, Tsung-Fa Wang
  • Patent number: 9256364
    Abstract: A computer readable recording media comprising at least one program code recorded thereon, a touch control method is performed when the program code is read and executed. The touch control method comprises the following steps: (a) detecting location data for an object relative to a detecting surface to generate at least one displacement data; (b) storing the displacement data to a storage apparatus and outputting the stored displacement data to a target apparatus from the storage apparatus after storing the displacement data for a predetermined time period, when the object touches the detecting surface; and (c) cleaning the stored displacement data when the object leaves the detecting surface.
    Type: Grant
    Filed: June 6, 2013
    Date of Patent: February 9, 2016
    Assignee: PixArt Imaging Inc.
    Inventors: Yung-Chang Lin, Yu-Hao Huang, Tsung-Fa Wang, Ching-Lin Chung
  • Patent number: 9229545
    Abstract: An optical navigation apparatus and an optical navigation method are provided. The optical navigation apparatus includes a light source unit, an image sensing unit, and a processing unit, wherein the processing unit is electrically connected to the light source unit and the image sensing unit. The light source unit generates a beam of light. The image sensing unit captures a plurality of images within a time interval. The processing unit determines that the beam of light is projected onto a touch object according to the images, calculates a piece of displacement information related to the touch object according to the images, generates a comparison result by comparing the piece of displacement information with a threshold, and sets a displacement resolution of the optical navigation apparatus according to the comparison result.
    Type: Grant
    Filed: April 30, 2013
    Date of Patent: January 5, 2016
    Assignee: PIXART IMAGING INC.
    Inventors: Yu-Hao Huang, Ming-Tsan Kao, Ren-Hau Gu, Hsin-Chia Chen, Yung-Chang Lin, Tsung-Fa Wang
  • Publication number: 20150276472
    Abstract: An electronic device including a substrate and an optoelectronic device package is provided. The optoelectronic device package includes a light source, an image sensor and a plurality of connecting pins. The light source is configured to emit light toward a direction of a bottom surface of the optoelectronic device package. The image sensor is configured to receive reflected light from the direction of the bottom surface. The connecting pins are bended toward an opposite direction of the direction of the bottom surface and electrically connected to the substrate thereby increasing a discharge path of the electrostatic discharge.
    Type: Application
    Filed: December 23, 2014
    Publication date: October 1, 2015
    Inventors: TSUNG-FA WANG, YEN-MIN CHANG, CHING-LIN CHUNG
  • Publication number: 20140333540
    Abstract: An optical navigation device includes a first optical mechanism, a second optical mechanism, an image sensor, and a controller. The first optical mechanism is arranged for projecting light on a surface to generate a first projection result while the second optical mechanism is arranged for projecting light on the surface to generate a second projection result. The image sensor is arranged for sensing at least one of the first projection result and the second projection result within a sensing range to generate at least one first image sensing result. The controller is coupled to the first optical mechanism, the second optical mechanism and the image sensor, and is arranged for controlling the first optical mechanism and the second optical mechanism according to the first image sensing result. The optical navigation device accordingly performs movement detection.
    Type: Application
    Filed: October 15, 2013
    Publication date: November 13, 2014
    Applicant: PixArt Imaging Inc.
    Inventors: Tsung-Fa Wang, Chun-Wei Chen, Yung-Chang Lin, Ching-Lin Chung
  • Publication number: 20140320409
    Abstract: An optical finger mouse includes a housing, a light source, a light guide mechanism, an image sensor, a processor and a feedback module. The housing is arranged for an object to be detected performing a motion control thereon, wherein the object to be detected slides or taps on the housing to perform the motion control. The light source is arranged for generating light. The light guide mechanism is arranged for guiding the light generated by the light source to project on the object to be detected. The image sensor captures reflected light generated from the object to be detected to generate a sensing result. The processor generates detection information according to the sensing result. The feedback module generates feedback according to the detection information.
    Type: Application
    Filed: October 16, 2013
    Publication date: October 30, 2014
    Applicant: PixArt Imaging Inc.
    Inventors: Tsung-Fa Wang, Yung-Chang Lin, Ching-Lin Chung
  • Publication number: 20140240229
    Abstract: A computer readable recording media comprising at least one program code recorded thereon, a touch control method is performed when the program code is read and executed. The touch control method comprises the following steps: (a) detecting location data for an object relative to a detecting surface to generate at least one displacement data; (b) storing the displacement data to a storage apparatus and outputting the stored displacement data to a target apparatus from the storage apparatus after storing the displacement data for a predetermined time period, when the object touches the detecting surface; and (c) cleaning the stored displacement data when the object leaves the detecting surface.
    Type: Application
    Filed: June 6, 2013
    Publication date: August 28, 2014
    Inventors: Yung-Chang Lin, Yu-Hao Huang, Tsung-Fa Wang, Ching-Lin Chung
  • Publication number: 20140210723
    Abstract: An optical mouse apparatus includes a light source circuit, a sensing circuit, and a processing circuit. The light source circuit is used for generating and emitting a light signal onto a surface so as to generate a light reflected signal. The sensing circuit is used for estimating an image offset of the optical mouse apparatus. The processing circuit is coupled to the light source circuit and the sensing circuit and used for generating and outputting a control signal to a terminal according to the image offset outputted by the sensing circuit. The sensing circuit is further used for detecting at least one of a moving speed or an offset direction of the image offset of the optical mouse apparatus, so as to dynamically determine whether to compress data of the image offset outputted to the processing circuit, for reducing data amount read by the processing circuit.
    Type: Application
    Filed: July 24, 2013
    Publication date: July 31, 2014
    Applicant: PixArt Imaging Inc.
    Inventors: Yung-Chang Lin, Tsung-Fa Wang, Ching-Lin Chung
  • Publication number: 20140160024
    Abstract: An optical navigation apparatus and an optical navigation method are provided. The optical navigation apparatus includes a light source unit, an image sensing unit, and a processing unit, wherein the processing unit is electrically connected to the light source unit and the image sensing unit. The light source unit generates a beam of light. The image sensing unit captures a plurality of images within a time interval. The processing unit determines that the beam of light is projected onto a touch object according to the images, calculates a piece of displacement information related to the touch object according to the images, generates a comparison result by comparing the piece of displacement information with a threshold, and sets a displacement resolution of the optical navigation apparatus according to the comparison result.
    Type: Application
    Filed: April 30, 2013
    Publication date: June 12, 2014
    Applicant: Pixart Imaging Inc.
    Inventors: Yu-Hao HUANG, Ming-Tsan KAO, Ren-Hau GU, Hsin-Chia CHEN, Yung-Chang LIN, Tsung-Fa WANG