參數(shù)資料
型號(hào)： ADV612
廠商： Analog Devices, Inc.
元件分類： 視頻Codec
英文描述： Closed Circuit TV Digital Video Codec(閉路電視數(shù)字視頻編碼譯碼器)
中文描述： 閉路電視數(shù)字視頻編解碼器（閉路電視數(shù)字視頻編碼譯碼器）
文件頁(yè)數(shù)： 24/48頁(yè)
文件大小： 1085K
代理商： ADV612
ADV611/ADV612
–24–
REV. PrA
Figure 13. Hierarchical Structure of Wavelet Compressed Frame Data (Data Block Order)
TECHNCAL
DATA
(CONTINUOUS STREAM OF FRAMES)
TIME
FRAME (N)
FRAME (N + 1)
FRAME (N + 2)
FRAME (N + M)
FIELD 2 SEQUENCE
FIELD 1 SEQUENCE
FIELD SEQUENCE STRUCTURE
FIRST BLOCK SEQUENCE
COMPLETE BLOCK SEQUENCE
VERTICAL INTERFACE TIME CODE
FIRST BLOCK SEQUENCE STRUCTURE
DATA FOR MALLAT BLOCK 6
BIN WIDTH QUANTIZER CODE
SUB-BAND TYPE CODE
(STREAM OF MALLAT
BLOCK SEQUENCES)
SEQUENCE FOR MALLAT BLOCK 3
SEQUENCE FOR MALLAT BLOCK 20
SEQUENCE FOR MALLAT BLOCK 9
COMPLETE BLOCK (INDIVIDUAL) SEQUENCE STRUCTURE
DATA FOR MALLAT BLOCK
BIN WIDTH QUANTIZER CODE
START OF BLOCK CODE
START OF FIELD 1 OR 2 CODE
Compressed Data-Stream Definition
Through its Host Interface the ADV611/ADV612 outputs (dur-
ing encode) and receives (during decode) compressed digital
video data. This stream of data passing between the ADV611/
ADV612 and the host is hierarchically structured and broken up
into blocks of data as shown in Figure 13. Table V shows
pseudo code for a video data transfer that matches the transfer
order shown in Figure 13 and uses the code names shown in
Table XIV. The blocks of data listed in Figure 13 correspond to
wavelet compressed sections of each field illustrated in Figure 13
as a modified Mallat diagram.
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