Patents by Inventor Willie Song

Willie Song 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: 10511288
    Abstract: A navigation device including a digital filter configured to smooth tracking is provided. The digital filter is configured to sequentially receive input data and output a tap sum, and calculate a quotient and a remainder by dividing an accumulation value with an average number, wherein the remainder is feedback to the tap sum for updating the accumulation value and the quotient is configured as output data.
    Type: Grant
    Filed: June 20, 2019
    Date of Patent: December 17, 2019
    Assignee: PIXART IMAGING INC.
    Inventors: Kian-Ming Chin, Willie Song
  • Patent number: 10444860
    Abstract: There is provided a failure identification method of an optical navigation device including the steps of: constructing a fixed noise map according to image frames captured by an image sensor; calculating a feature value of the fixed noise map; identifying whether the fixed noise map is uniform or not according to the feature value; and generating an alert signal when the fixed noise map is non-uniform for indicating failure of the optical navigation device.
    Type: Grant
    Filed: June 8, 2018
    Date of Patent: October 15, 2019
    Assignee: PIXART IMAGING INC.
    Inventor: Willie Song
  • Publication number: 20190305759
    Abstract: A navigation device including a digital filter configured to smooth tracking is provided. The digital filter is configured to sequentially receive input data and output a tap sum, and calculate a quotient and a remainder by dividing an accumulation value with an average number, wherein the remainder is feedback to the tap sum for updating the accumulation value and the quotient is configured as output data.
    Type: Application
    Filed: June 20, 2019
    Publication date: October 3, 2019
    Inventors: KIAN- MING CHIN, WILLIE SONG
  • Patent number: 10382012
    Abstract: A navigation device including a digital filter configured to smooth tracking is provided. The digital filter is configured to sequentially receive input data and output a tap sum, and calculate a quotient and a remainder by dividing an accumulation value with an average number, wherein the remainder is feedback to the tap sum for updating the accumulation value and the quotient is configured as output data.
    Type: Grant
    Filed: January 26, 2015
    Date of Patent: August 13, 2019
    Assignee: PIXART IMAGING INC.
    Inventors: Kian-Ming Chin, Willie Song
  • Patent number: 10181310
    Abstract: A method for synchronizing a mouse report rate with a screen refresh rate of a computer includes: utilizing the computer to inform the mouse of a time period of each screen refresh; and adjusting the mouse report rate in accordance with the time period so that an equal integer number of frames will be reported in each screen refresh. Another method includes: determining a screen refresh rate of the computer; setting a target number of frames to be reported to the computer in each screen refresh period; scaling a motion report count of the mouse to generate a post-processed motion report count which corresponds to the target number of frames; and utilizing the post-processed motion report count to add or subtract frames to the number of frames reported during the mouse report period.
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: January 15, 2019
    Assignee: PixArt Imaging (Penang) SDN. BHD.
    Inventors: Kevin Len-Li Lim, Willie Song
  • Publication number: 20180292914
    Abstract: There is provided a failure identification method of an optical navigation device including the steps of: constructing a fixed noise map according to image frames captured by an image sensor; calculating a feature value of the fixed noise map; identifying whether the fixed noise map is uniform or not according to the feature value; and generating an alert signal when the fixed noise map is non-uniform for indicating failure of the optical navigation device.
    Type: Application
    Filed: June 8, 2018
    Publication date: October 11, 2018
    Inventor: WILLIE SONG
  • Patent number: 10013078
    Abstract: There is provided a failure identification method of an optical navigation device including the steps of: constructing a fixed noise map according to image frames captured by an image sensor; calculating a feature value of the fixed noise map; identifying whether the fixed noise map is uniform or not according to the feature value; and generating an alert signal when the fixed noise map is non-uniform for indicating failure of the optical navigation device.
    Type: Grant
    Filed: April 11, 2014
    Date of Patent: July 3, 2018
    Assignee: PIXART IMAGING INC.
    Inventor: Willie Song
  • Publication number: 20180158436
    Abstract: A method for synchronizing a mouse report rate with a screen refresh rate of a computer includes: utilizing the computer to inform the mouse of a time period of each screen refresh; and adjusting the mouse report rate in accordance with the time period so that an equal integer number of frames will be reported in each screen refresh. Another method includes: determining a screen refresh rate of the computer; setting a target number of frames to be reported to the computer in each screen refresh period; scaling a motion report count of the mouse to generate a post-processed motion report count which corresponds to the target number of frames; and utilizing the post-processed motion report count to add or subtract frames to the number of frames reported during the mouse report period.
    Type: Application
    Filed: December 6, 2016
    Publication date: June 7, 2018
    Inventors: Kevin Len-Li LIM, Willie Song
  • Patent number: 9874943
    Abstract: An optical navigation device for controlling an operation of a pointer on a display apparatus is provided, the optical navigation device includes a device body, a substrate, a light source, an image sensor, and a processing module. The light source, the image sensor, and the processing module are respectively disposed on the substrate. The device body has a housing with an accommodating space formed therein. The substrate is arranged in the accommodating space of the housing. The light source operatively generates a light illuminating a navigation surface of the optical navigation device through the opening of the housing. The image sensor is oriented at a preset angle with respect to a long axis of device body and is configured for capturing images of the navigation surface. The processing module generates a displacement information of the optical navigation device relative to the navigation surface according to the images captured.
    Type: Grant
    Filed: January 15, 2015
    Date of Patent: January 23, 2018
    Assignee: PIXART IMAGING (PENANG) SDN. BHD.
    Inventors: Willie Song, Zi Hao Tan, Joon Chok Lee
  • Patent number: 9489066
    Abstract: A computer system includes a host and a mouse device. The host is configured to output a screen size signal. The mouse device adjusts a DPI value thereof according to the screen size signal from the host. The present disclosure further provides an operating method of the computer system.
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: November 8, 2016
    Assignee: Pixart Imaging Inc.
    Inventor: Willie Song
  • Publication number: 20160218697
    Abstract: A navigation device including a digital filter configured to smooth tracking is provided. The digital filter is configured to sequentially receive input data and output a tap sum, and calculate a quotient and a remainder by dividing an accumulation value with an average number, wherein the remainder is feedback to the tap sum for updating the accumulation value and the quotient is configured as output data.
    Type: Application
    Filed: January 26, 2015
    Publication date: July 28, 2016
    Inventors: KIAN-MING CHIN, WILLIE SONG
  • Publication number: 20160209936
    Abstract: An optical navigation device for controlling an operation of a pointer on a display apparatus is provided, the optical navigation device includes a device body, a substrate, a light source, an image sensor, and a processing module. The light source, the image sensor, and the processing module are respectively disposed on the substrate. The device body has a housing with an accommodating space formed therein. The substrate is arranged in the accommodating space of the housing. The light source operatively generates a light illuminating a navigation surface of the optical navigation device through the opening of the housing. The image sensor is oriented at a preset angle with respect to a long axis of device body and is configured for capturing images of the navigation surface. The processing module generates a displacement information of the optical navigation device relative to the navigation surface according to the images captured.
    Type: Application
    Filed: January 15, 2015
    Publication date: July 21, 2016
    Inventors: WILLIE SONG, ZI HAO TAN, JOON CHOK LEE
  • Patent number: 9329702
    Abstract: A navigation device includes an image sensor, a memory unit and a processing unit. The image sensor is configured to capture an image frame of a work surface. The memory unit previously saves a lookup table including surface quality profiles of different surface categories. The processing unit is configured to calculate surface qualities of the work surface associated with different quality thresholds and to compare the surface qualities with the lookup table to determine the surface category of the work surface thereby selecting a tracking strategy associated with the surface category of the work surface.
    Type: Grant
    Filed: July 5, 2013
    Date of Patent: May 3, 2016
    Assignee: Pixart Imaging Inc.
    Inventor: Willie Song
  • Patent number: 9310903
    Abstract: A displacement detection device includes an image sensor, a processing unit and an output unit. The image sensor is configured to detect reflected light from a working surface to successively output image frames. The processing unit is configured to identify a hovering height and calculate a first axis displacement and a second axis displacement according to the image frames. The output unit is controlled by the processing unit to output a first ratio of the first axis displacement but not to output the second axis displacement when the hovering height is higher than a predetermined height.
    Type: Grant
    Filed: December 9, 2013
    Date of Patent: April 12, 2016
    Assignee: Pixart Imaging Inc.
    Inventors: Willie Song, Kevin Len-Li Lim
  • Patent number: 9313414
    Abstract: The present invention discloses a region based shutter adaptation method for image exposure. The method includes the steps of: (a) providing an image which is non-uniformly illuminated; (b) segmenting the image into two or more non-overlapping regions; (c) identifying brightness values for each of the regions when more than one brightness value has been produced for each of the regions; (d) applying the whole image with different shutters for different regions; and (e) exposing different regions for different exposure durations according to the brightness values respectively assigned to the regions, so that the present invention is capable of enabling different regions within the whole image which is non-uniformly illuminated to have different shutter adaptions.
    Type: Grant
    Filed: August 2, 2014
    Date of Patent: April 12, 2016
    Assignee: PIXART IMAGING (PENANG) SDN. BHD.
    Inventors: Willie Song, Wui-Pin Lee
  • Patent number: 9300937
    Abstract: There is provided a color image sensor including a sensing array and a processing unit. The sensing array includes a red pixel, a green pixel, a blue pixel, a red and green pixel and a red and blue pixel configured to output a detected signal, respectively. The processing unit is configured to calculate a signal difference between detected signals associated with the red pixel and the red and green pixel to be served as a red detected signal, calculate a signal difference between detected signals associated with the green pixel and the red and green pixel to be served as a green detected signal, and calculate a signal difference between detected signals associated with the blue pixel and the red and blue pixel to be served as a blue detected signal.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: March 29, 2016
    Assignee: Pixart Imaging (Penang) Sdn, Bhd.
    Inventors: Kevin Len-Li Lim, Willie Song, Keng-Yeen Lye
  • Publication number: 20150381957
    Abstract: There is provided a color image sensor including a sensing array and a processing unit. The sensing array includes a red pixel, a green pixel, a blue pixel, a red and green pixel and a red and blue pixel configured to output a detected signal, respectively. The processing unit is configured to calculate a signal difference between detected signals associated with the red pixel and the red and green pixel to be served as a red detected signal, calculate a signal difference between detected signals associated with the green pixel and the red and green pixel to be served as a green detected signal, and calculate a signal difference between detected signals associated with the blue pixel and the red and blue pixel to be served as a blue detected signal.
    Type: Application
    Filed: June 26, 2014
    Publication date: December 31, 2015
    Inventors: KEVIN LEN-LI LIM, WILLIE SONG, KENG-YEEN LYE
  • Publication number: 20150350508
    Abstract: The present invention discloses a region based shutter adaptation method for image exposure. The method includes the steps of: (a) providing an image which is non-uniformly illuminated; (b) segmenting the image into two or more non-overlapping regions; (c) identifying brightness values for each of the regions when more than one brightness value has been produced for each of the regions; (d) applying the whole image with different shutters for different regions; and (e) exposing different regions for different exposure durations according to the brightness values respectively assigned to the regions, so that the present invention is capable of enabling different regions within the whole image which is non-uniformly illuminated to have different shutter adaptions.
    Type: Application
    Filed: August 2, 2014
    Publication date: December 3, 2015
    Applicant: PixArt Imaging (Penang) SDN. BHD.
    Inventors: Willie Song, Wui-Pin Lee
  • Publication number: 20150293610
    Abstract: There is provided a failure identification method of an optical navigation device including the steps of: constructing a fixed noise map according to image frames captured by an image sensor; calculating a feature value of the fixed noise map; identifying whether the fixed noise map is uniform or not according to the feature value; and generating an alert signal when the fixed noise map is non-uniform for indicating failure of the optical navigation device.
    Type: Application
    Filed: April 11, 2014
    Publication date: October 15, 2015
    Applicant: PIXART IMAGING (PENANG) SDN. BHD.
    Inventor: WILLIE SONG
  • Publication number: 20150160743
    Abstract: A displacement detection device includes an image sensor, a processing unit and an output unit. The image sensor is configured to detect reflected light from a working surface to successively output image frames. The processing unit is configured to identify a hovering height and calculate a first axis displacement and a second axis displacement according to the image frames. The output unit is controlled by the processing unit to output a first ratio of the first axis displacement but not to output the second axis displacement when the hovering height is higher than a predetermined height.
    Type: Application
    Filed: December 9, 2013
    Publication date: June 11, 2015
    Applicant: PIXART IMAGING INC.
    Inventors: WILLIE SONG, KEVIN LEN-LI LIM