Patents by Inventor Yen-Chang Wang

Yen-Chang 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).

  • Patent number: 9454242
    Abstract: The present invention discloses an optical displacement detection apparatus and an optical displacement detection method. The optical displacement detection apparatus includes: a light source for projecting light on a surface; an image capturing unit for generating an image signal according to light reflected from the surface; and a processing unit for generating an auto-exposure (AE) state value and an image quality (IQ) value according to the image signal, and determining an AE range according to an initial AE range, the AE state value and the IQ value.
    Type: Grant
    Filed: March 22, 2013
    Date of Patent: September 27, 2016
    Assignee: PIXART IMAGING INCORPORATION
    Inventors: Yen-Chang Wang, Chun-Wei Chen
  • Patent number: 9438778
    Abstract: An image pickup device including an imaging lens, an image sensor, and a multiple aperture optical element is provided. The multiple aperture optical element is disposed on a light path between the imaging lens and the image sensor, and includes aperture elements arranged in an array. A ratio of an image side f-number of the imaging lens to an object side f-number of the imaging lens is within a range of 0.25 to 2. A light field image pickup lens is also provided.
    Type: Grant
    Filed: December 29, 2014
    Date of Patent: September 6, 2016
    Assignee: Industrial Technology Research Institute
    Inventors: Chuan-Chung Chang, Kuang-Vu Chen, Yen-Chang Wang, Hsin-Yueh Sung
  • Patent number: 9423887
    Abstract: A method of adjusting sampling precision of a navigation device is disclosed in the present invention. The sampling precision represents counts per inch (CPI) or dots per inch (DPI) of the navigation device. The method includes determining a predetermined mode of the navigation device, obtaining resolution of a display, and adjusting the sampling precision according to the resolution and the predetermined mode, so that the sampling precision of the navigation device can be accordingly increased and decreased due to variation of the resolution.
    Type: Grant
    Filed: February 5, 2014
    Date of Patent: August 23, 2016
    Assignee: PixArt Imaging Inc.
    Inventors: Yen-Chang Wang, Chun-Wei Chen, Yen-Min Chang
  • Patent number: 9274614
    Abstract: An optical mouse apparatus includes a light source unit, a sensing unit, and a processing unit. The light source unit is arranged for generating and emitting an optical signal, wherein the optical signal is emitted upon a surface, and then reflected to form an optical reflected signal. The sensing unit is arranged for generating a sensed image output according to the optical reflected signal, wherein the sensed image output is utilized for estimating an image displacement of the optical mouse apparatus. The processing unit is coupled to the light source unit and the sensing unit, and arranged for controlling the light source unit to emit the optical signal and determining a operation status of the optical mouse apparatus according to an image variation of at least a partial region of each of consecutive images of the sensed image output.
    Type: Grant
    Filed: May 9, 2013
    Date of Patent: March 1, 2016
    Assignee: PixArt Imaging Inc.
    Inventors: Chun-Wei Chen, Yen-Chang Wang
  • Publication number: 20160044216
    Abstract: An image pickup device including an imaging lens, an image sensor, and a multiple aperture optical element is provided. The multiple aperture optical element is disposed on a light path between the imaging lens and the image sensor, and includes aperture elements arranged in an array. The image pickup device satisfies: 0.7 ? L < D × b P - a < 1.06 ? L , where L is a pitch of the aperture elements, D is a diameter of an exit pupil of the imaging lens, P is a distance between the exit pupil of the imaging lens and an image plane of the imaging lens, a is a distance value from the image plane of the imaging lens to a front principal plane of the multiple aperture optical element, and b is a distance between a back principal plane of the multiple aperture optical element and the image plane of the image sensor. A light field image pickup lens is also provided.
    Type: Application
    Filed: December 29, 2014
    Publication date: February 11, 2016
    Inventors: Chuan-Chung Chang, Kuang-Vu Chen, Yen-Chang Wang, Hsin-Yueh Sung
  • Patent number: 9035881
    Abstract: An electronic apparatus that can utilize a first report rate to generate a first report rate output signal according to an output signal or can utilize a second report rate smaller than the first report rate to generate a second report rate output signal according to the output signal. The electronic apparatus comprises: a first signal smoothing apparatus; a second signal smoothing apparatus having a smooth ability smaller than the first signal smoothing apparatus and a processing unit, for selecting the first signal smoothing apparatus to process the first report rate output signal when the electronic apparatus utilizes the first report rate to generate signal, and for selecting the second signal smoothing apparatus to process the second report rate output signal when the electronic apparatus utilizes the second report rate to generate signal.
    Type: Grant
    Filed: October 17, 2013
    Date of Patent: May 19, 2015
    Assignee: PixArt Imaging Inc.
    Inventors: Chun-Wei Chen, Yen-Chang Wang
  • Publication number: 20150097779
    Abstract: A method of adjusting sampling precision of a navigation device is disclosed in the present invention. The sampling precision represents counts per inch (CPI) or dots per inch (DPI) of the navigation device. The method includes determining a predetermined mode of the navigation device, obtaining resolution of a display, and adjusting the sampling precision according to the resolution and the predetermined mode, so that the sampling precision of the navigation device can be accordingly increased and decreased due to variation of the resolution.
    Type: Application
    Filed: February 5, 2014
    Publication date: April 9, 2015
    Applicant: PixArt Imaging Inc.
    Inventors: Yen-Chang Wang, Chun-Wei Chen, Yen-Min Chang
  • Publication number: 20150022360
    Abstract: There is provided an input device including at least one input unit, a trigger detection unit, a storage unit and an analysis and processing unit. The at least one input unit is for inputting a plurality of trigger events by a user. The trigger detection unit is configured to detect the trigger events of the at least one input unit and generate a trigger signal corresponding to each of the trigger events. The storage unit is configured to record an operating condition associated with the user. The analysis and processing unit is configured to analyze an operating pattern of the trigger signals and determine a warning time according to the operating condition and the operating pattern.
    Type: Application
    Filed: June 9, 2014
    Publication date: January 22, 2015
    Inventors: CHUN-WEI CHEN, YEN-MIN CHANG, YIN-HUI LEE, CHUN-CHIH CHEN, YEN-CHANG WANG
  • Publication number: 20140372633
    Abstract: An electronic system that can automatically set a report rate, which comprises: a first electronic apparatus; a second electronic apparatus; a transmitting interface, wherein the second electronic apparatus transmits data to the first electronic apparatus via the transmitting interface; and a processing unit, for automatically setting a report rate of the second electronic apparatus or the transmitting interface according to a type of a software program that the first electronic apparatus executes.
    Type: Application
    Filed: December 27, 2013
    Publication date: December 18, 2014
    Applicant: PixArt Imaging Inc.
    Inventors: Chun-Wei Chen, Yen-Min Chang, Yen-Chang Wang
  • Publication number: 20140368433
    Abstract: An electronic apparatus that can utilize a first report rate to generate a first report rate output signal according to an output signal or can utilize a second report rate smaller than the first report rate to generate a second report rate output signal according to the output signal. The electronic apparatus comprises: a first signal smoothing apparatus; a second signal smoothing apparatus having a smooth ability smaller than the first signal smoothing apparatus and a processing unit, for selecting the first signal smoothing apparatus to process the first report rate output signal when the electronic apparatus utilizes the first report rate to generate signal, and for selecting the second signal smoothing apparatus to process the second report rate output signal when the electronic apparatus utilizes the second report rate to generate signal.
    Type: Application
    Filed: October 17, 2013
    Publication date: December 18, 2014
    Applicant: PixArt Imaging Inc.
    Inventors: Chun-Wei Chen, Yen-Chang Wang
  • Publication number: 20140218280
    Abstract: The present disclosure provides a wireless peripheral device with multi-transmission capability. The wireless peripheral device wirelessly transmits a control signal to a wireless receiver. The wireless peripheral device comprises a first wireless transmitting unit, a second transmitting unit, and a processing unit. The second transmitting unit receives a responding signal from the wireless receiver. The capable transmission distance of the first transmitting unit is larger than the capable transmission distance of the second transmitting unit. The processing unit is coupled to the first transmitting unit and the second transmitting unit. The processing unit transmits the control signal through the second transmitting unit to the wireless receiver when the strength of the responding signal is at a high intensity range. The processing unit transmits the control signal through the first transmitting unit to the wireless receiver when the strength of the responding signal is at a low intensity range.
    Type: Application
    Filed: October 18, 2013
    Publication date: August 7, 2014
    Applicant: Pixart Imaging Inc.
    Inventors: YEN-CHANG WANG, Chun-Wei Chen, Ching-Lin Chung
  • Publication number: 20140191971
    Abstract: An optical mouse apparatus includes a light source unit, a sensing unit, and a processing unit. The light source unit is arranged for generating and emitting an optical signal, wherein the optical signal is emitted upon a surface, and then reflected to form an optical reflected signal. The sensing unit is arranged for generating a sensed image output according to the optical reflected signal, wherein the sensed image output is utilized for estimating an image displacement of the optical mouse apparatus. The processing unit is coupled to the light source unit and the sensing unit, and arranged for controlling the light source unit to emit the optical signal and determining a operation status of the optical mouse apparatus according to an image variation of at least a partial region of each of consecutive images of the sensed image output.
    Type: Application
    Filed: May 9, 2013
    Publication date: July 10, 2014
    Applicant: PixArt Imaging Inc.
    Inventors: Chun-Wei Chen, Yen-Chang Wang
  • Publication number: 20140028561
    Abstract: The present invention discloses an optical displacement detection apparatus and an optical displacement detection method. The optical displacement detection apparatus includes: a light source for projecting light on a surface; an image capturing unit for generating an image signal according to light reflected from the surface; and a processing unit for generating an auto-exposure (AE) state value and an image quality (IQ) value according to the image signal, and determining an AE range according to an initial AE range, the AE state value and the IQ value.
    Type: Application
    Filed: March 22, 2013
    Publication date: January 30, 2014
    Applicant: PIXART IMAGING INCORPORATION
    Inventors: Yen-Chang Wang, Chun-Wei Chen