Data read device and method for video memory including first and

Details Data read device and method for video memory including first and Data read device and method for video memory including first and

1993-03-01

1994-04-12

Groody, James J.

Television

Image signal processing circuitry specific to television

Color television signal processing

348663, H04N 964

Patent

active

053030397

ABSTRACT:
The present invention relates to a video memory in a digital image processing device, and more particularly to a data read device for a video memory capable of reading plural types of data recorded together in a predetermined ratio as recorded beforehand in an initial memory. In particular, luminance signal data and chrominance signal data are recorded intermingled with one another in a video memory in proportion to a ratio determined by the composite image signal. The circuitry of the present invention then separates the luminance signal data and the chrominance signal data, so that signal processing can be executed. As a result, since the data can be recorded in a mixed fashion and then separated, video memory space is used more efficiently.

REFERENCES:
patent: 4432009 (1984-02-01), Reitmeier
patent: 4589020 (1986-05-01), Akatsuka
patent: 4792856 (1988-12-01), Shiratsuchi

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