Patents by Inventor Yen Min CHANG

Yen Min CHANG 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: 20160098100
    Abstract: There is provided an optical mini-mouse including a mouse case and a navigation module. The mouse case includes a valley and a flat region arranged along a length direction and the valley extends along a width direction. When the mouse case is rotated about the valley, the navigation module is configured to detect a rotation.
    Type: Application
    Filed: December 14, 2015
    Publication date: April 7, 2016
    Inventor: YEN-MIN CHANG
  • Publication number: 20160054809
    Abstract: The present invention provides a motion detecting system, which includes a light source module, a plurality of image sensors and a control unit. The light source module illuminates at least one object. The image sensors respectively detect the object under the light emitted by the light source module to generate a plurality of detection results. The control unit is coupled to the image sensors, and generates a control command according to the detection results.
    Type: Application
    Filed: November 5, 2015
    Publication date: February 25, 2016
    Inventors: TING-YANG CHANG, YEN-MIN CHANG, NIEN-TSE CHEN
  • Patent number: 9255795
    Abstract: A method of increasing signal-to-noise ratio of a distance-measuring device includes a light-emitting component emitting a detecting light to a measured object during an emitting period for generating a reflected light, a delay period after the light-emitting component emitting the detecting light, a light-sensing component sensing the energy of the reflected light to generate a light-sensing signal, and obtaining a measured distance between the distance-measuring device and the measured object according to the energy of the detecting light and the light-sensing signal. Since the measured distance is longer than a predetermined shortest measured distance, the method can accordingly calculate a proper delay period for ensuring that the reflected light reaches the light-sensing component after the delay period. In this way, the light-sensing component does not sense the background light during the delay period, so that the signal-to-noise ratio of the light-sensing signal is improved.
    Type: Grant
    Filed: August 22, 2013
    Date of Patent: February 9, 2016
    Assignee: PixArt Imaging Inc.
    Inventors: En-Feng Hsu, Yen-Min Chang
  • Patent number: 9244540
    Abstract: There is provided an optical mini-mouse including a mouse case and a navigation module. The mouse case includes a valley and a flat region arranged along a length direction and the valley extends along a width direction. When the mouse case is rotated about the valley, the navigation module is configured to detect a rotation.
    Type: Grant
    Filed: December 31, 2013
    Date of Patent: January 26, 2016
    Assignee: Pixart Imaging Inc.
    Inventors: Yin-Hui Lee, Chun-Wei Chen, Yen-Min Chang
  • Publication number: 20160012656
    Abstract: A control system including a detection device and a control host is provided. The detection device is configured to detect a biometric characteristic to accordingly identify a user ID, and output an ID signal according to the user ID. The control host is configured to receive the ID signal to accordingly perform an individualized control associated with the user ID.
    Type: Application
    Filed: April 13, 2015
    Publication date: January 14, 2016
    Inventors: CHIH-YUAN CHUANG, CHENG-NAN TSAI, MING-TSAN KAO, YEN-MIN CHANG
  • Publication number: 20160007929
    Abstract: A biometric detection module including a light source module, a detection region and a control module is provided. The light source module is configured to emit green light, red light and IR light in a time division manner to illuminate a skin surface. The detection region is configured to detect penetration light emitted from the light source module for illuminating the skin surface and passing through body tissues to correspondingly generate a green light signal, a red light signal and an IR light signal. The control module is configured to determine a filtering parameter according to the green light signal to accordingly filter the red light signal and the IR light signal, and calculate a biometric characteristic according to at least one of the green light signal, a filtered red light signal and a filtered IR light signal.
    Type: Application
    Filed: April 14, 2015
    Publication date: January 14, 2016
    Inventors: CHIH-YUAN CHUANG, CHENG-NAN TSAI, MING-TSAN KAO, YEN-MIN CHANG
  • Publication number: 20150355733
    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: August 18, 2015
    Publication date: December 10, 2015
    Inventors: YEN-MIN CHANG, CHUN-WEI CHEN
  • Patent number: 9201543
    Abstract: An optical navigating apparatus, comprising: a displacement detecting apparatus, for determining if the optical navigating apparatus has displacement relative to an target, and for generating a displacement signal according to the displacement; and a touch control panel, for detecting a touch control operation of an user, wherein the touch control panel has a sampling rate and changes the sampling rate according to a control signal, wherein the sampling rate can be adjusted according to the displacement signal, where the sampling rate correspondingly decreases when the displacement signal indicates the displacement increases.
    Type: Grant
    Filed: January 7, 2013
    Date of Patent: December 1, 2015
    Assignee: PixArt Imaging Inc.
    Inventors: Chun-Chen Chen, Hsin-Chia Chen, Yen-Min Chang
  • 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
  • Patent number: 9146627
    Abstract: A lift detection method for an optical mouse and an optical mouse with a lift detection function are presented. An average brightness value of pixels captured by part of sensing units of an image sensor is computed after each scanning, and two average brightness values obtained from two adjacent times of scanning are compared, to determine a brightness change of the pixels in each scanning, thereby acquiring a placing state of the optical mouse accordingly.
    Type: Grant
    Filed: January 27, 2011
    Date of Patent: September 29, 2015
    Assignee: PIXART IMAGING INC.
    Inventors: Chih-Yen Wu, Yao-Hsuan Lin, Yen-Min Chang
  • Publication number: 20150189162
    Abstract: A camera device without an image displaying function which is adapted to assemble with a portable electronic device with a vision displaying module is disclosed in the present invention. The camera device is electrically connected to the portable electronic device via wire/wireless connection. The camera device includes a base, a lens module and at least one touch navigation module. The base includes a surrounding component whereinside the lens module is disposed. The lens module includes a lens assembly and a digital processing unit. The touch navigation module is disposed on an outer surface of the surrounding component and electrically connected to the lens module. The touch navigation module detects an input command to trigger the lens assembly to capture an image, or controls parameters of an adjustable mode of the lens assembly via the digital processing unit.
    Type: Application
    Filed: May 13, 2014
    Publication date: July 2, 2015
    Applicant: PixArt Imaging Inc.
    Inventors: Shih-Wei Kuo, Feng-Cheng Yang, Yi-Min Liu, Yen-Min Chang
  • Patent number: 9046935
    Abstract: A power saving method for a motion estimation device includes: calculating a first differential image at a first time; calculating a second differential image at a second time; comparing the first differential image and the second differential image to obtain a displacement between the first differential image and the second differential image; comparing the displacement with at least one threshold value; and adjusting an emitting cycle of a light source according to a comparison result of comparing the displacement and the threshold value and maintaining a sampling period of the motion estimation device unchanged when adjusting the emitting cycle of the light source. The present invention further provides a motion estimation device.
    Type: Grant
    Filed: May 15, 2013
    Date of Patent: June 2, 2015
    Assignee: PIXART IMAGING INC.
    Inventors: Ching Lin Chung, Yen-Min Chang
  • Patent number: 9029756
    Abstract: The present invention discloses an optical displacement detection apparatus and an optical displacement detection method. The optical displacement detection apparatus comprises: at least two light sources for projecting light of different spectrums to a surface under detection, respectively; an image capturing device for receiving light reflected from the surface under detection and converting it into electronic signals; and a processing control circuit for calculating displacement according to the electronic signals from the image capturing device, wherein the processing control circuit is capable of switching between the light sources.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: May 12, 2015
    Assignee: Pixart Imaging Incorporation, R.O.C.
    Inventors: Hui-Hsuan Chen, Hsin-Chia Chen, Han-Chi Liu, Ching-Lin Chung, Yen-Min Chang
  • Publication number: 20150104083
    Abstract: There is provided a thin biometric detection module, which is advantageous in being able to detect scattered light from body tissue after the light transmitting in the body tissue without additional optical mechanism placed on the semiconductor optical detection pixel of the detection module for biometric detection.
    Type: Application
    Filed: June 10, 2014
    Publication date: April 16, 2015
    Inventors: REN-HAU GU, YEN-MIN CHANG
  • 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: 20150063513
    Abstract: An operating method of a human interface device includes the steps of: counting an oversampling number of an oversampling signal and estimating an accumulated bit number of a USB data stream according to the oversampling signal; calculating a difference between the oversampling number and M times of the accumulated bit number when the accumulated bit number is larger than a predetermined value; and calibrating detected information obtained operating with the oversampling signal according to the correction parameter.
    Type: Application
    Filed: November 5, 2014
    Publication date: March 5, 2015
    Inventors: Ren-Hau GU, Hsiang-Sheng LIU, 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: 20150009147
    Abstract: A method capable of detecting position of an object for actuating a navigation apparatus is disclosed in the present invention. The navigation apparatus includes a casing, an optical touch unit and a touch processing unit. The optical touch unit is disposed on an upper surface of the casing. The touch processing unit is disposed inside the casing and electrically connected to the optical touch unit. The actuating method includes outputting an optical detecting signal, receiving an optical reflecting signal from the object, analyzing the optical reflecting signal to obtain intensity of the optical reflecting signal, determining whether the object is located above the optical touch unit according to the intensity, and switching the touch processing unit into a normal mode when the object is located above the optical touch unit.
    Type: Application
    Filed: November 3, 2013
    Publication date: January 8, 2015
    Applicant: PixArt Imaging Inc.
    Inventors: Chun-Chen Chen, Yen-Min Chang
  • Publication number: 20150002474
    Abstract: A handheld electronic device with touch control function is disclosed in the present invention. The handheld electronic device includes a housing, at least one optical detecting module and a control unit. The housing includes a display surface and a back surface opposite to each other. The housing further includes a top surface, a bottom surface and two lateral surfaces, respectively located between the display surface and the back surface. The optical detecting module is disposed on the lateral surface of the housing for detecting a movement of a touch medium. The control unit is electrically connected to the optical detecting module. The control unit outputs a control signal according to the movement of the touch medium.
    Type: Application
    Filed: February 20, 2014
    Publication date: January 1, 2015
    Applicant: PixArt Imaging Inc.
    Inventors: Yen-Min Chang, Hui-Hsuan Chen
  • Publication number: 20140375565
    Abstract: There is provided an optical mini-mouse including a mouse case and a navigation module. The mouse case includes a valley and a flat region arranged along a length direction and the valley extends along a width direction. When the mouse case is rotated about the valley, the navigation module is configured to detect a rotation.
    Type: Application
    Filed: December 31, 2013
    Publication date: December 25, 2014
    Applicant: PIXART IMAGING INC.
    Inventors: YIN-HUI LEE, CHUN-WEI CHEN, YEN-MIN CHANG