Pulse or digital communications – Bandwidth reduction or expansion – Television or motion video signal
Reexamination Certificate
2005-09-27
2005-09-27
Wong, Allen (Department: 2613)
Pulse or digital communications
Bandwidth reduction or expansion
Television or motion video signal
C375S240000, C375S240010, C375S240020, C375S240250
Reexamination Certificate
active
06950466
ABSTRACT:
A memory reducing device in an apparatus for receiving moving pictures is applied to the fields such as a digital television receiver, a digital video conference system and the like. The memory reducing device enables to reduce an external memory of an MPEG-2 video decoding chip and obtain standard deviations by predicting the current pixel using a pixel located at the highly-related direction which is determined by having the deviation estimating part measure the relation between the horizontal or vertical direction of the pixels adjacent there between and to be currently encoded. Moreover, the memory reducing device enables to increase a compression ratio as well as provide clear distinction of high definition by reducing the difference less than the bit precision of the current pixel by means of predicting the current pixel by selecting the pixel located at the highly-related direction with the above same method and performing quantization with the prediction.
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Chung Tae Il
Kim Eung Tae
Fleshner & Kim LLP
LG Electronics Inc.
Wong Allen
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