Video signal compression apparatus for horizontal compression of

Details Video signal compression apparatus for horizontal compression of Video signal compression apparatus for horizontal compression of

1996-10-02

1998-02-03

Lee, Michael H.

Television

Format conversion

Conversion between standards with different aspect ratios

348913, H04H 701

Patent

active

057150109

ABSTRACT:
A video signal compression apparatus extracts a specific value written in a read only memory at every system clock pulse. The specific value can be varied at every clock pulse. Therefore, for example, only the center part of a picture can be horizontally compressed. A FIFO memory may be used. It is possible to select a mode with a fixed compression ratio or a mode in which a compression ratio varies at every clock pulse. Further, the fixed compression ratio can be set from the outside. Display position of the picture can also be changed.

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