Signal processor (system) for reducing bandwidth and for multipl

Details Signal processor (system) for reducing bandwidth and for multipl Signal processor (system) for reducing bandwidth and for multipl

1983-02-17

1986-12-30

Orsino, Jr., Joseph A.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358141, H04N 712

Patent

active

046333118

ABSTRACT:
The bandwidth required for a regularly occurring signal such as a television signal, as received from a signal source can be substantially reduced by not transmitting each and every one of the horizontal scan lines. Rather, firstly, one or more selected lines may be transmitted and, secondly, instead of transmitting the remaining, unselected lines, a signal representing a predetermined arithmetic difference among predetermined ones of the scan lines may be transmitted.

REFERENCES:
patent: 2951899 (1950-09-01), Day, Jr.
patent: 3423526 (1969-01-01), Law
patent: 3697682 (1972-10-01), Berg
patent: 4027333 (1977-05-01), Kaiser et al.
patent: 4151550 (1979-04-01), Dinstein
patent: 4215370 (1980-07-01), Kirk
patent: 4300161 (1981-11-01), Haskell
Haskell--"Time-Frequency Multiplexing"--Bell System Tech. Journal, vol. 60, No. 5, May-Jun. 1981, pp. 643-660.
Eng et al.--"TV Bandwidth Compression"--IEEE 1981 Nat. Telecomm. Conf., Nov. 29-Dec. 3, 1981, pp. D7.4.1-D7.4.3.
Flood et al.--Time Compression Multiplex Transmission--Proc. of IEEE, vol. 111, No. 4, Apr. 1964, pp. 647-688.
Abbott--"Transmission of Multiple Television Programs"--Pacific Telecomm. Conf., Jan. 8-9, 1979, pp. 4B-34-4B-37.
Klensch et al.--"Two for One Video"--RCA Review, vol. 41, Sep. 1980, pp. 387-406.
Kaplan--"A New Technique for Transmitting"--RCA Review, vol. 41, Sep. 1980, pp. 407-420.

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