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參數資料
型號: W9961CF
廠商: WINBOND ELECTRONICS CORP
元件分類: 消費家電
英文描述: H.263/H.261 Video Codec
中文描述: SPECIALTY CONSUMER CIRCUIT, PQFP208
封裝: 28 X 28 MM, 2.60 MM HEIGHT, PLASTIC, QFP-208
文件頁數: 28/65頁
文件大小: 344K
代理商: W9961CF
W9961CF
- 28 -
7.2 Video Codec
DCT
Q
IQ
IDCT
ZZ
VLE
IZZ
VLD
Mux
MC
(Motion Compensation)
ME
(Motion Estimation)
Mux
0
1
0
1
0
Video Memory
Picture
Picture
Previous
Reconstructed
Current
Reconstructed
Video Memory
Buffer
Buffer
Encoding
Bitstream
Decoding
Bitstream
Video Memory
Encoding
Local
View
for
1: INTER
0: INTRA
DCT ENGINE
DBF
Figure 7.2 Video Codec Block Diagram
7.2.1 Video Coding
The coding mode in which temporal prediction is applied is called INTER; the coding mode is called
INTRA if no temporal prediction is applied. The W9961CF supports both INTRA and INTER coding
modes. The INTRA coding mode can be signaled at the picture level (INTRA for I-pictures or INTER
for P-pictures) or at the macroblock level in P-pictures.
7.2.1.1 I-pictures INTRA Coding
I-pictures require no motion estimation or compensation. Each macroblock is DCT transformed at
first. DCT coefficients are quantized (Q), zig-zag scanned (ZZ), variable-length encoder (VLE) coded,
and stored into the video memory. Within each macroblock, processing is performed on 8
×
8 blocks.
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W9967BCF JPEG USB Camera Chip(運用JPEG壓縮技術和通用串行總線結構技術的照相電路數字處理芯片的攝像照相機接口控制器)
W9967CF JPEG USB Camera Chip(運用JPEG壓縮技術和通用串行總線結構技術的照相電路數字處理芯片的攝像照相機接口控制器)
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相關代理商/技術參數
參數描述
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:
W99685BS 制造商:WINBOND 制造商全稱:Winbond 功能描述:SYSTEM CAMERA DEVICE