Video telephone

Details Video telephone Video telephone

1982-05-19

1984-11-27

Britton, Howard W.

Facsimile and static presentation processing

Static presentation processing

Attribute control

179 2C, 179 2DP, 179 2TV, 179 62, 358140, 358229, 358254, 360 91, 360 331, D14 54, D14 57, D14 78, D14 79, H04N 718

Patent

active

044854005

ABSTRACT:
An apparatus and method are provided for transmitting video data over telephone lines. The apparatus is particularly applicable for transmitting and receiving images of persons speaking to each other. In one form, a portable self-contained unit is provided at each end of a conventional telephone circuit wherein the transducers of the mouthpiece and earpiece of each telephone are respectively acoustically coupled to respective acoustic output and input electrical-to-sound and sound-to-electrical transducers of each self-contained unit for two-way audio and video communication therebetween. Each unit, which may be contained in a single housing, has a television camera directed and operative for slow scanning the face of a person making the telephone call, a television display screen and image retaining means for displaying the image of a person having a similar unit at the other end of the line, and a speaker and microphone which may be contained within the housing or in a telephone hand set for receiving speech and generating sounds of speech transmitted from the other terminal circuits. Hard copy generating means, such as a picture printer, may also be provided to print pictures of the images on the television display screen when controlled to do so.

REFERENCES:
patent: 3617626 (1971-11-01), Bluth
patent: 3974329 (1976-08-01), Zenzefilis
patent: 4057836 (1977-11-01), Munsey
patent: 4099202 (1978-07-01), Cavanaugh
patent: 4196447 (1980-04-01), Dalke
patent: 4216499 (1980-08-01), Kunze
IBM Technical Disclosure Bulletin, vol. 10, No. 7, Dec. 1967, p. 904, "TV Buffer", W. K. French.
Conference Record: Electronic Text Communication, Munich, Jun. 12-15, 1978, pp. 323-329, "Display Phone".
Fernmelde-Praxis, (Germany), vol. 56, No. 24, (Dec. 25, 1979), "Function of Subscriber Installations for the View Text Data".

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