Picture-in-picture circuitry using field rate synchronization

Details Picture-in-picture circuitry using field rate synchronization Picture-in-picture circuitry using field rate synchronization

Filed on

1989-04-20

Date issued

1992-02-25

Examiner

Chin, Tommy P.

Patent Class

Facsimile and static presentation processing

SubClass

Facsimile

SubSubClass

Specific signal processing circuitry

Other Related Categories

358 22, H04N 5262

Type

Patent

Status

active

Patent number

050917854

Description

ABSTRACT:
A picture-in-picture system including panning and scrolling capability moves an inset image about a display in synchronism with the vertical field rate in order to provide smooth movement from one display position to another.

REFERENCES:
patent: 4249211 (1981-02-01), Baba
patent: 4729029 (1988-03-01), Henri
patent: 4739406 (1988-04-01), Morton
patent: 4814884 (1989-03-01), Johnson
patent: 4821102 (1989-04-01), Ichikawa
RCA Digital VCR #728, Citicorp-Diner's Club Catalog, p. 44.

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