Vbi Encoding; Figure 1-13: Vec Block Diagram; Table 1-9: Vbi Encoding - Broadcom BCM7405 General Information Manual

BCM7405
Functional Description
Figure 1-13 illustrates a single-channel implementation of the VEC. By replicating select modules, this architecture can be
expanded to meet any targeted requirement.
V ideo 2
V ideo 1
The following is a summary of the supported tasks:
• Sync Generation
• DC Level Offset
• Color Space Conversion
• Luminance and Chroma filtering
• Macrovision encoding (Version 7.1.S1)
• VBI Support including Close Caption, Teletext, NABTS, WSS, CGMS-A, Gemstar, SCTE20/21, and AMOL I/II

VBI Encoding

Mnemonic Standard
BVID IEC 61880-1
IEC 61880-1
IEC 61880-2
IEC 61880-2
CPR-1204-2
CPR-1204-2
Closed caption EIA-608
EIA-608
WSS ETS 300 294
ETS 300 294
Page 1-52 Video and Graphics Display
Input
Tim ing
Input
Tim ing
V ideo Video
Form atter Form atter
S R C
S R C
S ub- S ub-
C arrier C arrier
M odulator M odulator
3 3
6

Figure 1-13: VEC Block Diagram

Table 1-9: VBI Encoding

Output format Resolution
CVBS/YC 525i
Component 525i
CVBS/YC 525p
Component 525p
CVBS/YC 750p, 1125i
Component 750p, 1125i
CVBS/YC 525i
Component 525i
Component 525i
CVBS/YC 525i
Bro adco m C orp or atio n
2/24/2008 9T6WP
Preliminary Hardware Data Module
V ideo D igital Video
Form atter Form atter
D VI
SR C
R 656
3
Retrieve from
Direct Encode Memory
(Sampled)
Yes Yes
Yes Yes
Yes Yes
Yes Yes
TBD –
TBD –
Yes Yes
Yes Yes
Yes Yes
Yes Yes
06/29/07
ITU
Graphics
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Document 7405-1HDM00-R