Browse Prior Art Database

Data and Video Communication Via TV Cables

IP.com Disclosure Number: IPCOM000074056D
Original Publication Date: 1971-Mar-01
Included in the Prior Art Database: 2005-Feb-23
Document File: 2 page(s) / 42K

Publishing Venue

IBM

Related People

Dervan, JT: AUTHOR [+3]

Abstract

Broad band cables presently used for home television program distribution are adapted to participate in a combined data and video signal distribution process. Central facility 1 containing data processor 2 is programmed to control the distribution process. Multiple terminals T, containing television receiver sets 4, communicate with processor 2 via trunk-branch links 5-5', terminal modems 6, central modem 7 and central I/O unit 8. Repeaters 9 suited for bidirectional signal handling maintain signal strength. Conveniently a source of video signals (e.g., image file 10 and TV camera 11) is attached to the central facility for distribution to the terminals. Terminals T are also equipped with keyboards 14 and buffer storage 15.

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Data and Video Communication Via TV Cables

Broad band cables presently used for home television program distribution are adapted to participate in a combined data and video signal distribution process. Central facility 1 containing data processor 2 is programmed to control the distribution process. Multiple terminals T, containing television receiver sets 4, communicate with processor 2 via trunk-branch links 5-5', terminal modems 6, central modem 7 and central I/O unit 8. Repeaters 9 suited for bidirectional signal handling maintain signal strength. Conveniently a source of video signals (e.g., image file 10 and TV camera 11) is attached to the central facility for distribution to the terminals. Terminals T are also equipped with keyboards 14 and buffer storage 15. Available signal spectrum on trunk cable 5 is utilized efficiently by frequency and time multiplexing techniques. In addition to keyboards 14, other manual signal devices are readily incorporated in the terminals. Alternate forms of image and/or data display media may be used in place of, or in parallel with, the receiver sets 4; e.g. meters, facsimile reproduction apparatus, etc.

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