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參數(shù)資料
型號(hào): W9960CF
廠商: WINBOND ELECTRONICS CORP
元件分類: 消費(fèi)家電
英文描述: A Single Chip Multiprotcol High Performance Video CODEC(單片多協(xié)議高性能視頻編解碼器)
中文描述: SPECIALTY CONSUMER CIRCUIT, PQFP208
封裝: PLASTIC, QFP-208
文件頁(yè)數(shù): 42/65頁(yè)
文件大小: 368K
代理商: W9960CF
W9960CF
Winbond Confidential
42
June 1997
3.14 FIDCT/Q/IQ Engine
W9960CF contains Forward/Inverse Discrete Cosine Transform Engine (FIDCT) and
Quantization /Inverse Quantization Engine, which are frequently used in video
compression/decompression.
For video encoding, DCT is used to reduce spatial redundancy of images. The quantization logic
further filters most AC values and keeps the DC value.
In video decoding, each 8x8 block is transformed back by Inverse Quantization. This IQ process
induces quantization error in AC values compared with original data, but the DC value is
recovered losslessly. Thereafter, data is sent to Inverse Discrete Cosine Transform stage to do
image recovery process. In the INTRA mode, the result is final reconstructed image. While in
the INTER mode, the result has to be added with the previous block data to reconstruct the
image.
Block Diagram
ADD
DCT
Q
Zig/Zag
IQ
IDCT
ADD
Quant
Table
From VLD
From Filter
BUFFER
BUFFER
BUFFER
RE-Construct
Current Block
相關(guān)PDF資料
PDF描述
W9961CF H.263/H.261 Video Codec
W9967BCF JPEG USB Camera Chip(運(yùn)用JPEG壓縮技術(shù)和通用串行總線結(jié)構(gòu)技術(shù)的照相電路數(shù)字處理芯片的攝像照相機(jī)接口控制器)
W9967CF JPEG USB Camera Chip(運(yùn)用JPEG壓縮技術(shù)和通用串行總線結(jié)構(gòu)技術(shù)的照相電路數(shù)字處理芯片的攝像照相機(jī)接口控制器)
W99681CF JPEG USB Dual Mode Camera Chip(運(yùn)用JPEG壓縮技術(shù)、通用串行總線結(jié)構(gòu)技術(shù)、雙制式的照相電路數(shù)字處理芯片的攝像照相機(jī)接口控制器)
W9971CF Integrated Video Graphics Accelerator(集成的視頻圖形加速器)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
W9961CF 制造商:WINBOND 制造商全稱:Winbond 功能描述:H.263/H.261 Video Codec
W9966CF 制造商:未知廠家 制造商全稱:未知廠家 功能描述:
W9966TF 制造商:未知廠家 制造商全稱:未知廠家 功能描述:
W99681CF 制造商:WINBOND 制造商全稱:Winbond 功能描述:JPEG USB Dual Mode Camera Chip
W99685 制造商:未知廠家 制造商全稱:未知廠家 功能描述: