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Hongjun Li patents

Recent bibliographic sampling of Hongjun Li patents listed/published in the public domain by the USPTO (USPTO Patent Application #,Title):



06/13/13 - 20130147994 - Imaging system and method having extended depth of field
An imaging system and method having a selected depth of field include an imaging lens for forming images of an object, the imaging lens having chromatic aberration and a color image sensor for receiving the images of the object. The color image sensor has a selected spectral response, the selected...
Inventors: Lu Gao, Jizhang Shan, Guansong Liu, Hongjun Li (Omnivision Technologies, Inc.)

06/13/13 - 20130147965 - Ir-cut filter having red absorbing layer for digital camera
An infrared cut filter may be used with an image sensor to remove infrared light components from image light received from a first side of the infrared cut filter prior to the image light reaching the image sensor to be disposed on a second side of the infrared cut filter....
Inventors: Lu Gao, Hongjun Li (Omnivision Technologies, Inc.)

02/07/13 - 20130033629 - Image sensor with improved black level calibration
An imaging system capable of black level calibration includes an imaging pixel array, at least one black reference pixel, and peripheral circuitry. The imaging pixel array includes a plurality of active pixels each coupled to capture image data. The black reference pixel is coupled to generate a black reference signal...
Inventors: Wei Zheng, Hsin-chih Tai, Yin Qian, Hongjun Li, Howard E. Rhodes (Omnivision Technologies, Inc.)

10/04/12 - 20120249845 - Image sensor with improved black level calibration
An imaging system capable of black level calibration includes an imaging pixel array, at least one black reference pixel, and peripheral circuitry. The imaging pixel array includes a plurality of active pixels each coupled to capture image data. The black reference pixel is coupled to generate a black reference signal...
Inventors: Wei Zheng, Hsin-chih Tai, Yin Qian, Hongjun Li, Howard E. Rhodes (Omnivision Technologies, Inc.)

05/03/12 - 20120104525 - Image sensor with color pixels having uniform light absorption depths
An example image sensor includes first, second, and third micro-lenses. The first micro-lens is in a first color pixel and has a first curvature and a first height. The second micro-lens is in a second color pixel and has a second curvature and a second height. The third micro-lens is...
Inventors: Fei Wu, Hongjun Li, Yin Qian, Hsin-chih Tai, Howard E. Rhodes, Jizhang Shan (Omnivision Technologies, Inc.)

01/19/12 - 20120014591 - Cross-color image processing systems and methods for sharpness enhancement
Systems and methods for processing a detected composite color image to form a processed composite color image includes the following, for each of a plurality of pixels in the image: (1) identifying a window of pixels in the image that surrounds the pixel, (2) calculating a weight factor coefficient for...
Inventors: Guansong Liu, Jizhang Shan, Lu Gao, Hongjun Li (Omnivision Technologies, Inc.)

08/18/11 - 20110199518 - Image sensor with improved black level calibration
An imaging system capable of black level calibration includes an imaging pixel array, at least one black reference pixel, and peripheral circuitry. The imaging pixel array includes a plurality of active pixels each coupled to capture image data. The black reference pixel is coupled to generate a black reference signal...
Inventors: Wei Zheng, Hsin-chih Tai, Yin Qian, Hongjun Li, Howard E. Rhodes (Omnivision Technologies, Inc.)

11/26/09 - 20090289169 - Image sensor with simultaneous auto-focus and image preview
Embodiments of the present invention are directed to a plurality of light sensor cells disposed in a substrate in a shared pixel arrangement. Common readout circuitry is used to simultaneously read out image information from a group of light sensor cells. The image information from the group of light sensor...
Inventors: Hongli Yang, Hongjun Li, Xinping He (Omnivision Technologies, Inc.)

04/30/09 - 20090110324 - White/black pixel correction in a digital image sensor
Disclosed are embodiments of an apparatus comprising an image sensor comprising a pixel array including a plurality of pixels, a detection circuit coupled to the pixel array to detect potential white/black pixel defects in the pixel array, a correction circuit coupled to the detection circuit to correct potential white/black pixel...
Inventors: Hongjun Li, Yuqian Dong, Xinping He

04/02/09 - 20090086074 - Dual mode camera solution apparatus, system, and method
A camera solution includes an image sensor and an image processing and control system. At least two different operating modes are supported, with one of the modes having a higher dynamic range. Control of the dynamic range is provided at the system level. The system supports statically or dynamically selecting...
Inventors: Hongjun Li, James Xinping He, Henry Hongli Yang (Omnivision Technologies, Inc.)

Omnivision Technologies, Inc.

Archived*
(*May have duplicates - we are upgrading our archive.)

20120249845 - Image sensor with improved black level calibration


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The bibliographic references displayed about Hongjun Li's patents are for a recent sample of Hongjun Li's publicly published patent applications. The inventor/author may have additional bibliographic citations listed at the USPTO.gov. FreshPatents.com is not associated or affiliated in any way with the author/inventor or the United States Patent/Trademark Office but is providing this non-comprehensive sample listing for educational and research purposes using public bibliographic data published and disseminated from the United States Patent/Trademark Office public datafeed. This information is also available for free on the USPTO.gov website. If Hongjun Li filed recent patent applications under another name, spelling or location then those applications could be listed on an alternate page. If no bibliographic references are listed here, it is possible there are no recent filings or there is a technical issue with the listing--in that case, we recommend doing a search on the USPTO.gov website.

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