U.S. patents available from 1976 to present.
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System for receiving and decoding digital signals in accordance with two image definition levels

Patent 5510848 Issued on April 23, 1996. Estimated Expiration Date: Icon_subject June 30, 2014. 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

Television program transmission verification method and apparatus
Patent #: 4805020
Issued on: 02/14/1989
Inventor: Greenberg

Video system
Patent #: 5255097
Issued on: 10/19/1993
Inventor: Spiero, et al.

Apparatus for processing video signals having different aspect ratios Patent #: 5347318
Issued on: 09/13/1994
Inventor: Kobayashi, et al.

Inventors

Application

No. 269814 filed on 06/30/1994

US Classes:

348/556, For format with different aspect ratio348/558Format detection

Examiners

Primary: Kostak, Victor R.

Attorney, Agent or Firm

International Class

H04N 005/46

Foreign Application Priority Data

1993-06-30 FR

Abstract

A system for receiving and decoding digital signals in accordance with two image definition levels. The system includes a transmission channel decoding sub-assembly; a source decoding sub-assembly for decoding signals of a higher definition level or signals of a lower definition level; a device for displaying the decoded signals available at the output of this sub-assembly; at a second output of the sub-assembly, a device for detecting errors during source decoding, followed, in series, by a decision circuit for controlling the switch in accordance with the output signal of said error detection device, as well as for controlling the change-over of the decoding sub-assembly from one of the two source decoding modes to the other.

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