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US Patent 5666170 - Apparatus for decoding video signals encoded in different formats
US Patent Issued on September 9, 1997
Estimated Patent Expiration Date:
July 12, 2015Estimated 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.
Estimated Patent Expiration Date:
July 12, 2015Estimated 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.AbstractAn adaptive receiver includes an adaptive decoder for providing decoded output data from a video signal encoded for satellite, terrestrial or cable transmission. The apparatus includes an adaptive decoder for providing a first decoded output as a function of a code rate selected from a plurality of code rates. The apparatus also includes an adaptive deinterleaver for deinterleaving the first decoded output in accordance with a deinterleaving function selected from a plurality of deinterleaving functions. In addition, the apparatus includes an output signal processor for processing the deinterleaved output data to provide the decoded output data. The demodulator may also incorporate a an adaptive error decoder for detecting and correcting errors in the deinterleaved output. In addition, a signal quality detector may provide an estimate of the error in the decoded output data. The apparatus is automatically configured to be compatible with the encoded video signal format in response to the error estimate.Other References
| InventorAssigneeApplicationNo. 501334 filed on 07/12/1995US Classes:348/726, Demodulator348/432.1, Added video information in standard channel format348/558Format detectionField of Search348/725, RECEIVER CIRCUITRY348/726, Demodulator348/553, BASIC RECEIVER WITH ADDITIONAL FUNCTION348/556, For format with different aspect ratio348/558, Format detection375/324, Particular demodulator375/328, Including switching or gating (digital circuits)375/340, Particular pulse demodulator or detector375/341, Maximum likelihood decoder or viterbi decoder375/346, Interference or noise reduction375/348, Intersymbol interference375/350By filtering (e.g., digital)ExaminersPrimary: Kostak, Victor R.Attorney, Agent or FirmUS Patent References4309719, Dual standard PAL/SECAM receiver circuitryIssued on: 01/05/1982 Inventor: Hinn5119177, Automatic 3-mode switching circuit of a color television set Issued on: 06/02/1992 Inventor: Lim5253044, Television apparatus with automatic selection and processing of video input signals of composite and non-composite form Issued on: 10/12/1993 Inventor: Lamy5282019, Method and apparatus for the transmission and reception of a multicarrier digital television signal Issued on: 01/25/1994 Inventor: Basile, et al.5475442, Television signal processor for processing any of a plurality of different types of television signals Issued on: 12/12/1995 Inventor: Matsushita, et al.5497401, Branch metric computer for a Viterbi decoder of a punctured and pragmatic trellis code convolutional decoder suitable for use in a multi-channel receiver of satellite, terrestrial and cable transmitted FEC compressed-digital television data Issued on: 03/05/1996 Inventor: Ramaswamy, et al.5506636, HDTV signal receiver with imaginary-sample-presence detector for QAM/VSB mode selection Issued on: 04/09/1996 Inventor: Patel, et al.5510848, System for receiving and decoding digital signals in accordance with two image definition levels Issued on: 04/23/1996 Inventor: Nocture, et al.5512957Method and apparatus for combating co-channel NTSC interference for digital TV transmission Issued on: 04/30/1996 Inventor: Hulyalkar Foreign Patent References
International ClassesH04N 005/455H04N 007/26 |
