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).
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Patent number: 10021431Abstract: 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: GrantFiled: January 4, 2013Date of Patent: July 10, 2018Assignee: OMNIVISION TECHNOLOGIES, INC.Inventors: Kah-Ong Tan, Jizhang Shan, Hui Pan, Guannho George Tsau
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Patent number: 9859318Abstract: 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: GrantFiled: October 22, 2014Date of Patent: January 2, 2018Assignee: OmniVision Technologies, Inc.Inventor: Guannho George Tsau
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Patent number: 9478579Abstract: 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: GrantFiled: September 20, 2013Date of Patent: October 25, 2016Assignee: OmniVision Technologies, Inc.Inventors: Tiejun Dai, Guannho George Tsau
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Patent number: 9368530Abstract: 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: GrantFiled: February 21, 2013Date of Patent: June 14, 2016Assignee: OmniVision Technologies, Inc.Inventors: Guannho George Tsau, Edward Nabighian
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Publication number: 20160118428Abstract: 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: ApplicationFiled: October 22, 2014Publication date: April 28, 2016Inventor: Guannho George Tsau
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Patent number: 9131284Abstract: 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: GrantFiled: January 4, 2013Date of Patent: September 8, 2015Assignee: OmniVision Technologies, Inc.Inventors: Guannho George Tsau, Jizhang Shan, Hui Pan, Kah-Ong Tan
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Patent number: 8892163Abstract: 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: GrantFiled: March 6, 2012Date of Patent: November 18, 2014Assignee: Omni Vision Technologies, Inc.Inventors: Guannho George Tsau, Anson Hoi-Fung Chan
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Publication number: 20140231621Abstract: 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: ApplicationFiled: February 21, 2013Publication date: August 21, 2014Applicant: OMNIVISION TECHNOLOGIES, INC.Inventors: Guannho George Tsau, Edward Nabighian
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Publication number: 20140192199Abstract: 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: ApplicationFiled: January 4, 2013Publication date: July 10, 2014Applicant: OMNIVISION TECHNOLOGIES, INC.Inventors: Kah-Ong Tan, Jizhang Shan, Hui Pan, Guannho George Tsau
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Publication number: 20140192198Abstract: 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: ApplicationFiled: January 4, 2013Publication date: July 10, 2014Applicant: OMNIVISION TECHNOLOGIES, INC.Inventors: Guannho George Tsau, Jizhang Shan, Hui Pan, Kah-Ong Tan
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Publication number: 20140103411Abstract: 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: ApplicationFiled: September 20, 2013Publication date: April 17, 2014Applicant: OMNIVISION TECHNOLOGIES, INC.Inventors: Tiejun Dai, Guannho George Tsau
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Publication number: 20130237280Abstract: 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: ApplicationFiled: March 6, 2012Publication date: September 12, 2013Applicant: OMNIVISION TECHNOLOGIES, INC.Inventors: Guannho George Tsau, Anson Hoi-Fung Chan
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Patent number: 7940170Abstract: 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: GrantFiled: March 5, 2008Date of Patent: May 10, 2011Assignee: OmniVision Technologies, Inc.Inventor: Guannho George Tsau
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Publication number: 20090224970Abstract: 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: ApplicationFiled: March 5, 2008Publication date: September 10, 2009Applicant: OmniVision Technologies, Inc.Inventor: Guannho George Tsau
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Patent number: 7541596Abstract: 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: GrantFiled: June 28, 2007Date of Patent: June 2, 2009Assignee: OmniVision Technologies, Inc.Inventors: James Xinping He, Guannho George Tsau, Ching Hu
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Publication number: 20080042066Abstract: 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: ApplicationFiled: June 28, 2007Publication date: February 21, 2008Inventors: James Xinping He, Guannho George Tsau, Ching Hu