Video tape recorder having picture-in-picture function

Details Video tape recorder having picture-in-picture function Video tape recorder having picture-in-picture function

1989-04-18

1991-07-16

Envall, Jr., Roy N.

Facsimile and static presentation processing

Facsimile

Recording apparatus

360 15, H04N 576

Patent

active

050329260

ABSTRACT:
A video tape recorder is associated with a monitor to provide sub-picture images at portions of the monitor screen for use in editing a recorded tape by inserting an input video signal. First and second memories are provided with respective capacities sufficient to store a field or frame of a video signal reproduced from the tape or of an input video signal, and writing and reading of the memories are controlled to provide sub-picture signals for display at the respective portions of the monitor screen. When playback or playback-pause modes are selected, one of the sub-picture screen portions displays the reproduced video signal as a moving picture or as a still picture, respectively. Upon change-over to the recording-pause mode, one of the sub-picture screen portions continues to display a still picture of the reproduced video signal at the moment of selection of the playback-pause mode and which may be the selected edit-in point, and the other sub-picture screen portions displays the input video signal as a moving picture so as to facilitate determining the point at which change-over to the recording mode is effected for recording the input video signal in place of the video signal previously recorded on the tape.

REFERENCES:
patent: 4725888 (1988-02-01), Hakamada
Gordon McComb, Video Magic, Sep. 1987, pp. 71-74, Popular Science.

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