Multi-level analog composite video signal generating apparatus

Details Multi-level analog composite video signal generating apparatus Multi-level analog composite video signal generating apparatus

1990-05-15

1991-08-06

Chin, Tommy P.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 29, H04N 964, H04N 973

Patent

active

050382047

ABSTRACT:
Apparatus responsive to digital video data features a video amplitude digital to analog converter for controlling the full scale outputs of other digital to analog converters for generating multi-level analog composite video signals. The digital to analog converter outputs are controlled and fine tuned to meet particular requirements. The implementation is based on a consistent ratio between the white, sync and black video levels of the composite signals, irrespective of the differences between the required white video levels.

REFERENCES:
patent: 4994901 (1991-02-01), Parulski

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