Horizontal magnifying circuit for video signals

Details Horizontal magnifying circuit for video signals Horizontal magnifying circuit for video signals

1996-03-27

1997-09-16

Hsia, Sherrie

Television

Basic receiver with additional function

For magnification of part of image

348582, H04N 544

Patent

active

056686048

ABSTRACT:
In a structure composed having a one-bit counter, a D-FF, a selector, and an AND gate, while the signal level of a thin-out signal is low, a read clock signal of a line memory is thinned out. Thus, video signals (a Y signal, a CR signal, and a CB signal) read from a line memory are horizontally magnified. At this point, both edges of a low portion of the input thin-out signal are synchronized with even number data of color difference signals (CR/CB) read from the line memory after a start signal that is a video signal read start signal is input.

REFERENCES:
patent: 5148277 (1992-09-01), Kurashige
patent: 5459525 (1995-10-01), Izawa

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