Digital color matrix for a digital television receiver

Details Digital color matrix for a digital television receiver Digital color matrix for a digital television receiver

1983-06-07

1985-09-17

Murray, Richard

Facsimile and static presentation processing

Static presentation processing

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H04N 9539

Patent

active

045424020

ABSTRACT:
In a digital television receiver, a digital signal processing system generates samples of binary coded color mixture digital signals that are a representation of color picture information. The values of binary coded coefficients that convert the representation of the color picture information into binary coded color difference signals are stored in a memory accessed by a microprocessor. In response to adjustment of controls such as contrast and tint, the microprocessor modifies the coefficients. The modified coefficients are placed in a digital store such as a latch arrangement. A multiplier arrangement receives samples of the color mixture digital signals as first inputs for multiplying them by corresponding modified coefficients that are supplied by the digital store as second inputs. A clock signal is generated that sequentially clocks out of the digital store selected ones of the modified coefficients for developing a sequence of products corresponding to the color mixture components of the color difference signal. The products are then combined to form samples of the binary coded color difference signal.

REFERENCES:
patent: 4303912 (1981-12-01), Stafford et al.
patent: 4355327 (1982-10-01), Nagumo et al.
patent: 4503454 (1985-03-01), Lewis, Jr.

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