Method and circuit for time-correction of digital switching sign

Details Method and circuit for time-correction of digital switching sign Method and circuit for time-correction of digital switching sign

1981-10-01

1983-09-06

Martin, John C.

Facsimile and static presentation processing

Static presentation processing

Attribute control

328 58, 333166, H04N 9535, H03K 506, H03H 1502

Patent

active

044032455

ABSTRACT:
A time correction value for each digital switching signal is determined and a set of switching control signals is formed which produce a progressive switching of the digital signal as a function of the time correction value. Each time correction value is stored until the following digital switching signal. The method improves chroma keying in digital color television systems.

REFERENCES:
patent: 4109278 (1978-08-01), Mendrala et al.
patent: 4122490 (1978-10-01), Lish

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