adv611-adv612 Analog Devices, Inc., adv611-adv612 Datasheet - Page 24
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adv611-adv612
Manufacturer Part Number
adv611-adv612
Description
Closed Circuit Tv Digital Video Codec
Manufacturer
Analog Devices, Inc.
Datasheet
1.ADV611-ADV612.pdf
(46 pages)
- Current page: 24 of 46
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ADV611/ADV612
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
SEQUENCE FOR MALLAT BLOCK 9
FIELD 1 SEQUENCE
FRAME (N)
START OF FIELD 1 OR 2 CODE
SUB-BAND TYPE CODE
START OF BLOCK CODE
Figure 13. Hierarchical Structure of Wavelet Compressed Frame Data (Data Block Order)
FIELD 2 SEQUENCE
FRAME (N + 1)
COMPLETE BLOCK (INDIVIDUAL) SEQUENCE STRUCTURE
FIELD SEQUENCE STRUCTURE
SEQUENCE FOR MALLAT BLOCK 20
BIN WIDTH QUANTIZER CODE
BIN WIDTH QUANTIZER CODE
VERTICAL INTERFACE TIME CODE
FRAME (N + 2)
FIRST BLOCK SEQUENCE STRUCTURE
–24–
TIME
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.
DATA FOR MALLAT BLOCK 6
DATA FOR MALLAT BLOCK
(CONTINUOUS STREAM OF FRAMES)
(STREAM OF MALLAT
BLOCK SEQUENCES)
FIRST BLOCK SEQUENCE
COMPLETE BLOCK SEQUENCE ORDER
SEQUENCE FOR MALLAT BLOCK 3
COMPLETE BLOCK SEQUENCE
FRAME (N + M)
REV. 0
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