Pulse or digital communications – Bandwidth reduction or expansion – Television or motion video signal
Reexamination Certificate
2011-04-19
2011-04-19
Tucker, Wesley (Department: 2624)
Pulse or digital communications
Bandwidth reduction or expansion
Television or motion video signal
C382S233000
Reexamination Certificate
active
07929602
ABSTRACT:
There are provided an apparatus and method for performing dynamic capacitance compensation (DCC) in a liquid crystal display (LCD). The DCC apparatus includes: a first line buffer reading and temporarily storing pixel values of an image for each line; an encoder transforming and quantizing the pixel values stored for each line for each block and generating bit streams; a memory storing the generated bit streams; a decoder decoding the bit streams stored in the memory for the each block and outputting the decoded bit streams; a second line buffer reading and temporarily storing the decoded pixel values for the each block; and a compensation pixel value detector detecting a compensation pixel value for each pixel, from pixel value differences between pixel values of a current frame stored in the first line buffer and pixel values of a previous frame stored in the second line buffer. Therefore, it is possible to reduce the number of pins of a memory interface by reducing the number of memory device for storing pixel values of image data, required for performing DCC of a LCD, resulting in minimizing a chip size, and to enhance compression efficiency without visual deterioration in images.
REFERENCES:
patent: 6181823 (2001-01-01), Takahashi
Watanabe, Windowed Motion Compensation, SPIE 1991.
Zahar, “Predictive Block-Matching Motion Estimation Schemes for Video Compression”, Southeastcon 1991.
Birinov Dmitri
Kim Woo-chul
Kim Woo-shik
Lee Seung-woo
Roz Mark
Samsung Electronics Co,. Ltd.
Staas & Halsey , LLP
Tucker Wesley
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