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

1984-09-19

1986-05-13

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370109, 358133, 375122, H04J 318, H04N 712

Patent

active

045891109

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. The bandwidth may be further reduced by a time expansion of the time interval of the selected line signal and by a time compression of the time interval of the differential signal. The bandwidth required for each regularly occurring signal as received from each of a plurality of N signal sources may be more efficiently used by time compression multiplexing the respective time expanded and time compressed signals.

REFERENCES:
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, Jr.
patent: 4300161 (1981-11-01), Haskell
Flood et al: "Time-Compression-Multiplex Transmission", Proc. of the IEEE, vol. 111, No. 4, Apr. 1964, pp. 647-688.
Abbott: "Transmission of Multiple Television Programs via a Single Satellite Transponder", Pacific Telecomm'ns Conf., Jan. 1979, pp. 4334-4337.
Klensch et al: "Two-for-One Video over Microwave Terrestrial Links", RCA Review, vol. 41, Sep. 1980, pp. 387-406.
Kaplan: "A New Technique for Transmitting Two High Quality Video Signals Over a Single Terrestrial Microwave Channel", RCA Review, Sep. 1980, pp. 407-420.
Haskell: "Time-Frequency Multiplexing . . . Simulation Results", Bell System Tech. Journal, vol. 60, No. 5, pp. 643-660, May-Jun. 1981.
Eng & Haskell: "TV Bandwidth Compression . . . Satellite Transmissions" National Telecommunications Conf., Nov. 29-Dec. 3, 1981, pp. D7.4.1-D7.4.3.

Affiliated with

Also associated with

Rating

Signal processor (system) for reducing bandwidth and for multipl does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Signal processor (system) for reducing bandwidth and for multipl, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Signal processor (system) for reducing bandwidth and for multipl will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1774313