Coded data generation or conversion – Digital code to digital code converters – Adaptive coding
Reissue Patent
2003-08-14
2010-06-08
Young, Brian (Department: 2819)
Coded data generation or conversion
Digital code to digital code converters
Adaptive coding
C341S106000
Reissue Patent
active
RE041370
ABSTRACT:
In an adaptive transform coding system and/or and adaptive transform decoding system, coding efficiency in the case where a small number of quantized values having large absolute value are present, is improved. The adaptive transform coding system codes the small number of quantized values having large absolute values and other quantized values are coded separately. More particularly, the adaptive transform coding system includes a selector (6) discriminating the small number of quantized value having large absolute value from other quantized value, a pulse coding means for coding the small number of quantized values having large absolute values (8) and the pulse decoding means (16) for decoding the same, a coding means (7) for coding the quantized value other than those having large absolute values and a decoding means (15) decoding the same, and a synthesis means (18) for synthesizing the small number of quantized values having large absolute value and other quantized values.
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“Coding of Moving Pictures and Associated Audo for Digital Storage Media at up to about 1.5 Mbit/s”, ISO/IEC11172-3, 1993, pp. 1-50.
Iwadare Masahiro
Takamizawa Yuichiro
Foley & Lardner LLP
NEC Corporation
Young Brian
LandOfFree
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