參數(shù)資料
型號: M65676FP
廠商: Mitsubishi Electric Corporation
英文描述: DIGITAL NTSC/PAL ENCODER
中文描述: 數(shù)字的NTSC / PAL編碼器
文件頁數(shù): 6/17頁
文件大?。?/td> 83K
代理商: M65676FP
MITSUBISHI ICs (TV)
M65675FP/M65676FP
DIGITAL NTSC/PAL ENCODER
6
PRELIMINARY
Notice:This is not a final specification.
Some parametric limits are subject to change.
Burst Insertion
The burst signal, set up in the corresponding register, is inserted to
Cb/Cr according to the burst timing signal.
The burst signal is derived from the following equations;
NTSC=ABS (Burst level-128)¥5/5.47 (IRE)
Ex. 40IRE=54
H
PAL={ABS (Burst level-128)¥5/5.47}¥
÷
2 (IRE)
Ex. 43IRE=5E
H
Video Anticopy Signal Addition [1]
(VBI Amplitude/CSP)
This applies to M65675FP only.
Sync-amplitude function and Color StripeTM control function are
carried out according to the corresponding register, in accordance
with Macrovision Video Anti Copy Process Rev. 7.0 dated
September 6 1996.
Encoder
Closed Caption Encoding
In the NTSC (525/60) mode, 8-bit¥2byte data, including parity bit,
set in the register are converted into the format shown in fig. 1 and
then will be inserted in the video signal according to the register
data of the closed captions control specification (closed caption on/
off and caption data insertion mode). After the completion of
transmission, the new data are loaded in the register by setting the
close caption flag to "1", then the transferred data are loaded in the
register on the trailing edge of V-sync pulse by setting that flag to
"0". (In case the closed caption flag is "1", the new data loading is
halted and the caption data are not inserted in the video signals).
S
C
C
C
C
C
C
C
C
C
C
C
C
C
Color
Burst
7 cycles of 503kHz
(Clock Run-in )
1st. byte
2nd. byte
Parity Bit
Parity Bit
10.500
±
0.5
μ
s
22(285) line
C
C
33.764
μ
s
61.331
±
0.5
μ
s
63.556
μ
s
21(284) line
20(283) line
12.910
μ
s
3.972
+
0.2/-0.0
μ
s
51.268+0.2/-0.0
μ
s
C
Fig. 1 CLOSED CAPTION WAVEFORM
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