Digital color television camera apparatus for selectively output

Details Digital color television camera apparatus for selectively output Digital color television camera apparatus for selectively output

1992-03-02

1993-06-01

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 11, 358310, 358 13, H04N 904, H04N 1120, H04N 979, H04N 1104

Patent

active

052164969

ABSTRACT:
Digital color television camera apparatus including an encoder for selectively producing either a digital component video signal or a digital composite video signal in accordance with first or second television standards (e.g. NTSC or PAL) by encoding digital primary color image signals in a first mode to produce digital component video signals and in a second mode to produce digital composite video signals. The encoder includes a matrix for producing digital color difference signals at a clock rate equal to the digital sampling clock rate 2f.sub.s and a down sampler for downsampling the digital color difference signals to reduce the clock rate. A digital low pass filter limits the frequency band of a down-sampled color difference signal by providing predetermined selected attenuation at preestablished frequencies of the down-sampled digital color difference signal. The encoder also includes a level setter for establishing predetermined quantizing values to represent respective reference signal levels of the digital component video signal when the encoder operates in its first mode, and for establishing different predetermined quantizing values to represent reference levels of the digital composite video signal when the encoder operates in its second mode.

REFERENCES:
patent: 5043803 (1991-08-01), Asaida
patent: 5095364 (1992-03-01), Asaida et al.
patent: 5140408 (1992-08-01), Kaite et al.

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