Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1990-04-26
1992-05-19
Groody, James J.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358182, 358181, H04N 5275
Patent
active
051153149
ABSTRACT:
Multi-keying circuitry for inserting a plurality of keys into a background television signal where at least the keying signal processing circuitry is time shared by control circuitry to effect the key insertions. The control circuitry includes dual port rams and RAM-DAC's to facilitate the time share operation. Circuitry for effecting transitions between the keys either individually or in groups is disclosed as is circuitry for previewing the keys or the transitions thereto either individually or in groups.
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Ross David A.
Ross John D.
Groody James J.
Murrell Jeffrey S.
Ross Video Limited
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