M65675FP データシートの表示（PDF） - MITSUBISHI ELECTRIC

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M65675FP

DIGITAL NTSC/PAL ENCODER

MITSUBISHI ELECTRIC  

PRELIMINARY

Notice:This is not a final specification.

Some parametric limits are subject to change.

MITSUBISHI ICs (TV)

M65675FP/M65676FP

DIGITAL NTSC/PAL ENCODER

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=54H

PAL={ABS (Burst level-128)¥5/5.47}¥÷2 (IRE)

Ex. 43IRE=5EH

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).

Color

Burst

7 cycles of 503kHz

(Clock Run-in )

Parity Bit

1st. byte

Parity Bit

2nd. byte

12.910µs 3.972+0.2/-0.0µs

33.764µs

10.500±0.5µs

20(283) line

51.268+0.2/-0.0µs

61.331±0.5µs

63.556µs

21(284) line

Fig. 1 CLOSED CAPTION WAVEFORM

22(285) line

6

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