Patents by Inventor Guannho George Tsau

Guannho George Tsau 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: 10021431
    Abstract: A mobile computing device includes a first video camera on a first side of the mobile computing device producing a first camera video stream. A second video camera is on a second side of the mobile computing device producing a second camera video stream. A video processor is coupled to the first video camera and the second video camera to receive the first camera video stream and the second camera video stream, respectively. The video processor is coupled to merge the first camera video stream and the second camera video stream to generate a merged video stream. The video processor includes a network interface coupled to upload the merged video stream to a server in real-time using an Internet wireless network. The server broadcasts the merged video stream to a plurality of receivers in real-time.
    Type: Grant
    Filed: January 4, 2013
    Date of Patent: July 10, 2018
    Assignee: OMNIVISION TECHNOLOGIES, INC.
    Inventors: Kah-Ong Tan, Jizhang Shan, Hui Pan, Guannho George Tsau
  • Patent number: 9859318
    Abstract: An image sensor pixel includes a photodiode region formed in a semiconductor layer, a pinning layer and a depletion adjustment layer. The photodiode region receives visible and infrared light from a light incident side of the image sensor pixel. The pinning layer is disposed between a front surface of the semiconductor layer and the photodiode region, while the depletion adjustment layer is disposed between the pinning layer and the photodiode region. The depletion adjustment layer is configured to adjust a depletion region of the photodiode region to reduce charge carriers induced in the photodiode region by the received infrared light.
    Type: Grant
    Filed: October 22, 2014
    Date of Patent: January 2, 2018
    Assignee: OmniVision Technologies, Inc.
    Inventor: Guannho George Tsau
  • Patent number: 9478579
    Abstract: An example imaging sensor system includes a backside-illuminated CMOS imaging array formed in a first semiconductor layer of a first wafer. The CMOS imaging array includes an N number of pixels, where each pixel includes a photodiode region. The first wafer is bonded to a second wafer at a bonding interface between a first metal stack of the first wafer and a second metal stack of the second wafer. A storage device is disposed in a second semiconductor layer of the second wafer. The storage device includes at least N number of storage cells, where each of the N number of storage cells are configured to store a signal representative of image charge accumulated by a respective photodiode region. Each storage cell includes a circuit element that is sensitive to light-induced leakage.
    Type: Grant
    Filed: September 20, 2013
    Date of Patent: October 25, 2016
    Assignee: OmniVision Technologies, Inc.
    Inventors: Tiejun Dai, Guannho George Tsau
  • Patent number: 9368530
    Abstract: An apparatus including a pixel array including a plurality of pixels and a filter array positioned over the pixel array, the color filter array comprising a plurality of tiled minimal repeating units, each minimal repeating unit including a plurality of enmeshed filter sets, each filter set including a different set of colors than any other filter set in the filter array. Other embodiments are disclosed and claimed.
    Type: Grant
    Filed: February 21, 2013
    Date of Patent: June 14, 2016
    Assignee: OmniVision Technologies, Inc.
    Inventors: Guannho George Tsau, Edward Nabighian
  • Publication number: 20160118428
    Abstract: An image sensor pixel includes a photodiode region formed in a semiconductor layer, a pinning layer and a depletion adjustment layer. The photodiode region receives visible and infrared light from a light incident side of the image sensor pixel. The pinning layer is disposed between a front surface of the semiconductor layer and the photodiode region, while the depletion adjustment layer is disposed between the pinning layer and the photodiode region. The depletion adjustment layer is configured to adjust a depletion region of the photodiode region to reduce charge carriers induced in the photodiode region by the received infrared light.
    Type: Application
    Filed: October 22, 2014
    Publication date: April 28, 2016
    Inventor: Guannho George Tsau
  • Patent number: 9131284
    Abstract: A mobile computing device includes first, second and third cameras coupled to produce first, second and third camera video streams, respectively. The first camera is on a first side of the mobile computing device, and the second and third cameras are included in a stereo camera on a second side of the mobile computing device. A video processor is coupled to generate an output video stream including a first video layer generated from the first camera video stream. The video processor is further coupled to generate the output video stream to include second and third video layers from the second camera video stream in response to the second and the third camera video streams. The video processor is further coupled to overlay the first video layer between the second video layer and the third video layer in the output video stream.
    Type: Grant
    Filed: January 4, 2013
    Date of Patent: September 8, 2015
    Assignee: OmniVision Technologies, Inc.
    Inventors: Guannho George Tsau, Jizhang Shan, Hui Pan, Kah-Ong Tan
  • Patent number: 8892163
    Abstract: An image sensor includes a pixel array having a plurality of pixels. A readout circuit is coupled to the pixel array. A controller circuit is coupled to control the pixel array and is coupled to the readout circuit to receive array data from the pixel array. The controller circuit includes a mode control logic unit providing logic which when executed causes the image sensor operate in an idle mode of operation and then sample in response to receiving an event signal array data received from the pixel array in a pulsed mode of operation. A pattern in the array data samples over time is recognized and a mode of operation is selected in response to the recognized pattern.
    Type: Grant
    Filed: March 6, 2012
    Date of Patent: November 18, 2014
    Assignee: Omni Vision Technologies, Inc.
    Inventors: Guannho George Tsau, Anson Hoi-Fung Chan
  • Publication number: 20140231621
    Abstract: An apparatus including a pixel array including a plurality of pixels and a filter array positioned over the pixel array, the color filter array comprising a plurality of tiled minimal repeating units, each minimal repeating unit including a plurality of enmeshed filter sets, each filter set including a different set of colors than any other filter set in the filter array. Other embodiments are disclosed and claimed.
    Type: Application
    Filed: February 21, 2013
    Publication date: August 21, 2014
    Applicant: OMNIVISION TECHNOLOGIES, INC.
    Inventors: Guannho George Tsau, Edward Nabighian
  • Publication number: 20140192199
    Abstract: A mobile computing device includes a first video camera on a first side of the mobile computing device producing a first camera video stream. A second video camera is on a second side of the mobile computing device producing a second camera video stream. A video processor is coupled to the first video camera and the second video camera to receive the first camera video stream and the second camera video stream, respectively. The video processor is coupled to merge the first camera video stream and the second camera video stream to generate a merged video stream. The video processor includes a network interface coupled to upload the merged video stream to a server in real-time using an Internet wireless network. The server broadcasts the merged video stream to a plurality of receivers in real-time.
    Type: Application
    Filed: January 4, 2013
    Publication date: July 10, 2014
    Applicant: OMNIVISION TECHNOLOGIES, INC.
    Inventors: Kah-Ong Tan, Jizhang Shan, Hui Pan, Guannho George Tsau
  • Publication number: 20140192198
    Abstract: A mobile computing device includes first, second and third cameras coupled to produce first, second and third camera video streams, respectively. The first camera is on a first side of the mobile computing device, and the second and third cameras are included in a stereo camera on a second side of the mobile computing device. A video processor is coupled to generate an output video stream including a first video layer generated from the first camera video stream. The video processor is further coupled to generate the output video stream to include second and third video layers from the second camera video stream in response to the second and the third camera video streams. The video processor is further coupled to overlay the first video layer between the second video layer and the third video layer in the output video stream.
    Type: Application
    Filed: January 4, 2013
    Publication date: July 10, 2014
    Applicant: OMNIVISION TECHNOLOGIES, INC.
    Inventors: Guannho George Tsau, Jizhang Shan, Hui Pan, Kah-Ong Tan
  • Publication number: 20140103411
    Abstract: An example imaging sensor system includes a backside-illuminated CMOS imaging array formed in a first semiconductor layer of a first wafer. The CMOS imaging array includes an N number of pixels, where each pixel includes a photodiode region. The first wafer is bonded to a second wafer at a bonding interface between a first metal stack of the first wafer and a second metal stack of the second wafer. A storage device is disposed in a second semiconductor layer of the second wafer. The storage device includes at least N number of storage cells, where each of the N number of storage cells are configured to store a signal representative of image charge accumulated by a respective photodiode region. Each storage cell includes a circuit element that is sensitive to light-induced leakage.
    Type: Application
    Filed: September 20, 2013
    Publication date: April 17, 2014
    Applicant: OMNIVISION TECHNOLOGIES, INC.
    Inventors: Tiejun Dai, Guannho George Tsau
  • Publication number: 20130237280
    Abstract: An image sensor includes a pixel array having a plurality of pixels. A readout circuit is coupled to the pixel array. A controller circuit is coupled to control the pixel array and is coupled to the readout circuit to receive array data from the pixel array. The controller circuit includes a mode control logic unit providing logic which when executed causes the image sensor operate in an idle mode of operation and then sample in response to receiving an event signal array data received from the pixel array in a pulsed mode of operation. A pattern in the array data samples over time is recognized and a mode of operation is selected in response to the recognized pattern.
    Type: Application
    Filed: March 6, 2012
    Publication date: September 12, 2013
    Applicant: OMNIVISION TECHNOLOGIES, INC.
    Inventors: Guannho George Tsau, Anson Hoi-Fung Chan
  • Patent number: 7940170
    Abstract: A location tracking service includes a location tracking server and individual tracking modules. An individual tracking module can be attached or embedded in a consumer product. Each tracking module is programmable by an end-user to include a private ID that is sent along with tracking data to the location tracking server. The end-user can define and edit the private ID in the tracking module independent of the location tracking service to improve privacy protection. The tracking data may include raw (unprocessed) location data to reduce processing requirements at the tracking module.
    Type: Grant
    Filed: March 5, 2008
    Date of Patent: May 10, 2011
    Assignee: OmniVision Technologies, Inc.
    Inventor: Guannho George Tsau
  • Publication number: 20090224970
    Abstract: A location tracking service includes a location tracking server and individual tracking modules. An individual tracking module can be attached or embedded in a consumer product. Each tracking module is programmable by an end-user to include a private ID that is sent along with tracking data to the location tracking server. The end-user can define and edit the private ID in the tracking module independent of the location tracking service to improve privacy protection. The tracking data may include raw (unprocessed) location data to reduce processing requirements at the tracking module.
    Type: Application
    Filed: March 5, 2008
    Publication date: September 10, 2009
    Applicant: OmniVision Technologies, Inc.
    Inventor: Guannho George Tsau
  • Patent number: 7541596
    Abstract: A system and method for applying a layer of material in the image sensor fabrication process in order to increase the absorption of specific range light spectrum by the image sensor is described. The mechanism adopted is by converting light rays from higher energy range (shorter wavelength) to lower energy range (longer wavelength) such that the light absorption by the image sensor can be increased.
    Type: Grant
    Filed: June 28, 2007
    Date of Patent: June 2, 2009
    Assignee: OmniVision Technologies, Inc.
    Inventors: James Xinping He, Guannho George Tsau, Ching Hu
  • Publication number: 20080042066
    Abstract: A system and method for applying a layer of material in the image sensor fabrication process in order to increase the absorption of specific range light spectrum by the image sensor is described. The mechanism adopted is by converting light rays from higher energy range (shorter wavelength) to lower energy range (longer wavelength) such that the light absorption by the image sensor can be increased.
    Type: Application
    Filed: June 28, 2007
    Publication date: February 21, 2008
    Inventors: James Xinping He, Guannho George Tsau, Ching Hu