U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Bandwidth reduction and multiplexing of multiple component TV signals

Patent 4967272 Issued on October 30, 1990. Estimated Expiration Date: Icon_subject October 6, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

Apparatus for demodulating sampled data chroma signals
Patent #: 4527188
Issued on: 07/02/1985
Inventor: Lewis, Jr.

Demodulator for sampled chrominance signals including a Nyquist filter for recovering wideband I color difference signals
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Issued on: 06/10/1986
Inventor: Lewis, Jr. ,   et al.

IYQY format television signal encoding and decoding apparatus
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Issued on: 07/22/1986
Inventor: Acampora ,   et al.

Time-multiplexing of an interleaved spectrum of a television signal
Patent #: 4621287
Issued on: 11/04/1986
Inventor: Reitmeier ,   et al.

Method and system for improved reconstruction of video images in line sequential chroma format
Patent #: 4635098
Issued on: 01/06/1987
Inventor: Thong

Economical high-definition television using a modulated-signal combination
Patent #: 4641179
Issued on: 02/03/1987
Inventor: LoCicero ,   et al.

Compressed quantized image-data transmission technique suitable for use in teleconferencing
Patent #: 4663660
Issued on: 05/05/1987
Inventor: Fedele ,   et al.

High-definition television transmission system
Patent #: 4694338
Issued on: 09/15/1987
Inventor: Tsinberg

Display processor with color matrixing circuitry and two map memories storing chrominance-only data
Patent #: 4719503
Issued on: 01/12/1988
Inventor: Craver ,   et al.

Video signal digital processing system using lower sampling frequency for chroma signal data decimation
Patent #: 4745492
Issued on: 05/17/1988
Inventor: Kobayashi ,   et al.

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Inventors

Assignee

Application

No. 418993 filed on 10/06/1989

US Classes:

348/386.1Color television

Examiners

Primary: Peng, John K.

Attorney, Agent or Firm

Foreign Patent References

  • 3435562 DE. 02/13/1986
  • 225786 JP. 12/13/1983

International Classes

H04N 007/12
H04N 007/01
H04N 007/04
H04N 011/20

Abstract

In a system for transmitting analog video signals, the luminance and chrominance components are each subjected to different bandwidth reduction processes. In addition, the high and low frequency portions of the luminance component are subjected to different bandwidth reduction signal processes.

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