Circuit to resize and enlarge an image signal and resizing...

Television – Image signal processing circuitry specific to television – Special effects

Reexamination Certificate

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Details

C348S580000, C348S525000, C348S530000, C348S531000, C348S521000, C345S660000

Reexamination Certificate

active

07349032

ABSTRACT:
The invention provides an image processing circuit having a capability of performing a reduction (resizing) process and an enlargement process on horizontal-scanning-line data inputted in synchronization with an input horizontal synchronization signal, and subsequently adjusting the horizontal synchronization signals so that the input horizontal-scanning-line data is made transferable to external devices in real time, and an image processing method therefor. A reducing unit thins out n-lines of the input horizontal synchronization signals out of m-lines of the input horizontal synchronization signals HD. When an enlarging unit enlarges the image data by an enlargement ratio k (k: natural number) in the vertical direction, the enlarging unit inserts (k−1) lines of the second horizontal synchronization signals for data transmission EHSYNC2in the transmitting horizontal-synchronization-signal interval time TC1between adjacent first horizontal synchronization signals for data. transmission EHSYNC1with predetermined intervals. A composing unit merges the first horizontal synchronization signals for data transmission EHSYNC1and the second horizontal synchronization signals for data transmission EHSYNC2to give horizontal synchronization signals for data transmission EHSYNC.

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