Image processing means for processing image signals of different

Details Image processing means for processing image signals of different Image processing means for processing image signals of different

1996-11-25

1999-08-24

Flynn, Nathan

Television

Format conversion

348555, 348556, H04N 546

Patent

active

059430974

ABSTRACT:
An image processing apparatus capable of producing a multi-image from images based on different video signal standards. A first switch selects a video signal which has been subjected to input processing by an input processing circuit, and a second switch selects a synchronizing signal separated from the input processing circuit. The output of the first switch is applied to an image memory via a low-pass filter and an analog-to-digital converter. A reduction control circuit outputs to a memory control circuit a horizontal/vertical enable signal at a timing based on a reduction ratio k (0<k.ltoreq.1) received from a CPU in accordance with the synchronizing signal received from the second switch. The memory control circuit controls the write to the image memory according to the synchronizing signal received from the second switch and the enable signal received from the reduction control circuit and it also controls a write address in accordance with storing coordinate information received from the CPU.

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