Videophone

Details Videophone Videophone

1989-06-29

1992-01-07

Ng, Jin F.

Facsimile and static presentation processing

Static presentation processing

Attribute control

379 53, H04N 714, H04N 142

Patent

active

050796275

ABSTRACT:
The present invention, the Videophone, is a compact audio/video device that is capable of both sending and receiving audio and visual signals, and is designed to be compatible with standard telephone equipment. The Videophone includes a modified speakerphone, a camera, a viewing screen, and an imaging system based upon a revolving disk of film having a series of holographic apertures which divide the subject image into elements of light. The disk has two bands which are used to alternately scan and reproduce an image. The visual image is process by unique circuitry that can, for ease of manufacture, be contained on a single customized chip. The videophone has the capability to transmit a full motion picture of reasonably good quality. Moreover, audio transmission is not blocked during transmission of the video signal.

REFERENCES:
patent: 1932253 (1933-10-01), Ives
patent: 4485400 (1984-11-01), Lemelson et al.
patent: 4715059 (1987-12-01), Cooper-Hart et al.
patent: 4827339 (1989-05-01), Wada et al.
patent: 4849811 (1989-07-01), Kleinerman
Luma.TM. Video Telephone by Mitsubishi, Sharper Image, 7-17-86, 358-85.

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