Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1986-10-24
1987-08-25
Masinick, Michael A.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358 22, H04N 5272, H04N 5262
Patent
active
046896813
ABSTRACT:
An input video signal representative of a scene is processed by carrying out a spatial transform operation on the input video signal so as to generate a transformed video signal. Concurrently, an input key signal representing the opacity of the scene and comprising a stream of digital data words is written into a key frame buffer. A first sequence of address words is generated, and a transform operation is carried out on the first sequence of address words so as to generate a second sequence of address words. The second sequence of address words is used to read digital data words from the key frame buffer so as to generate a first transformed key signal. The transform that was carried out on the first sequence of address words is such that the first transformed key signal is spatially transformed with respect to the input key signal in the same manner as the transformed video signal is spatially transformed with respect to the input video signal. The second sequence of address words is modified so as to generate a third sequence of address words, and the third sequence of address words is used to read digital words from the key frame buffer and generate a second transformed key signal. The transformed video signal is combined with the first and second transformed key signals.
REFERENCES:
patent: 3673324 (1972-06-01), Ito et al.
patent: 4041527 (1977-08-01), Rayner et al.
patent: 4109278 (1978-08-01), Mendrala et al.
patent: 4121253 (1978-10-01), McCoy
patent: 4178613 (1979-12-01), Takahashi et al.
patent: 4249212 (1981-02-01), Ito et al.
patent: 4302776 (1981-11-01), Taylor et al.
patent: 4334245 (1982-06-01), Michael
patent: 4409611 (1983-10-01), Vlahos
patent: 4432009 (1984-02-01), Reitmeier et al.
patent: 4463372 (1984-07-01), Bennett et al.
patent: 4468688 (1984-08-01), Gabriel et al.
patent: 4472732 (1984-09-01), Bennett et al.
patent: 4563703 (1986-01-01), Taylor et al.
Masinick Michael A.
Smith-Hill John
The Grass Valley Group Inc.
Toth E. Anne
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