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AK8855

NTSC/PAL Digital Video Decoder

Asahi Kasei Microdevices 

[ASAHI KASEI]

Input Video Decoding Period

This defines Decoding process period of input Video signal.

The period defined here is for the input Video source.

As for the decode data, a number of Lines differs, depending on the selected output mode.

Refer to a figure at next page which shows “ Input Video Signal vs Output Data relation ”.

Active Video Period is as follows.

525 Line system : Line 22 ~ Line 261 & Line 285 ~ Line 524

625 Line system : Line 23 ~ Line 310 & Line 336 ~ Line 623

Vertical Blanking Period is as follows .

525 Line system : Line 525 ~ Line 1 ~ Line 21 & Line 262 ~ Line 284

625 Line system : Line 624 ~ Line 625 – Line1 ~ Line 22 & Line 311 ~ Line 335

Default value of output during Vertical Blanking period is Black level ( Y = 0x10, Cb / Cr = 0x80 ).

AK8855

MS0319-E-03

24

2004 / 11

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