Apparatus for decoding video signals encoded in different formats
July 12, 2015. 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 ReferencesDual standard PAL/SECAM receiver circuitry Automatic 3-mode switching circuit of a color television set Television apparatus with automatic selection and processing of video input signals of composite and non-composite form Method and apparatus for the transmission and reception of a multicarrier digital television signal Television signal processor for processing any of a plurality of different types of television signals 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 HDTV signal receiver with imaginary-sample-presence detector for QAM/VSB mode selection System for receiving and decoding digital signals in accordance with two image definition levels Method and apparatus for combating co-channel NTSC interference for digital TV transmission Patent #: 5512957 InventorAssigneeApplicationNo. 501334 filed on 07/12/1995US Classes:348/726, Demodulator348/432.1, Added video information in standard channel format348/558Format detectionExaminersPrimary: Kostak, Victor R.Attorney, Agent or FirmForeign Patent References
International ClassesH04N 005/455H04N 007/26 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
Field of SearchRECEIVER CIRCUITRYDemodulator BASIC RECEIVER WITH ADDITIONAL FUNCTION For format with different aspect ratio Format detection Particular demodulator Including switching or gating (digital circuits) Particular pulse demodulator or detector Maximum likelihood decoder or viterbi decoder Interference or noise reduction Intersymbol interference By filtering (e.g., digital) | |
