Invention Grant
- Patent Title: System and method for dithering video data
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Application No.: US12157190Application Date: 2008-06-06
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Publication No.: US09024964B2Publication Date: 2015-05-05
- Inventor: Sunny Yat-san Ng
- Applicant: Sunny Yat-san Ng
- Applicant Address: US CA Santa Clara
- Assignee: OmniVision Technologies, Inc.
- Current Assignee: OmniVision Technologies, Inc.
- Current Assignee Address: US CA Santa Clara
- Agency: Henneman & Associates, PLC
- Agent Larry E. Henneman, Jr.; Gregory P. Gibson
- Main IPC: G09G5/02
- IPC: G09G5/02 ; G09G3/20 ; G09G3/36

Abstract:
A novel method for driving a display device includes the steps of receiving video data of a first type, converting the video data to data of a second type, dithering the data of the second type to form dithered pixel data, and outputting the dithered pixel data. The step of converting the video data to data of a second type includes inserting dither bits indicative of a particular dithering scheme into the data of the second type. An example display driver circuit includes an input for receiving video data, a data converter coupled to receive the video data and operative to convert the video data into pixel data to be written to pixels of a display, and a ditherer operative to receive the pixel data and to dither the pixel data to generate dithered pixel data. The video data is data of a first type, and the pixel data is data of a second type, different from the first type. In the disclosed example, the first type of data includes a binary data word, and the second type of data includes a compound data word. The compound data word includes a first set of binary weighted bits, a second set of arbitrarily weighted bits, and dither bits.
Public/Granted literature
- US20090303248A1 System and method for dithering video data Public/Granted day:2009-12-10
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