TH38008A - Channel Interference Detection Network for High Definition Television Receivers - Google Patents

Abstract

DC60 (23/11/41), Vestigial Sideband VSB (Vestigial Sideband VSB) signal processing receiver that contains Terrestrial broadcasted high-definition television and lead components containing an AC input converter Analog to digital (19) for production Which stream It was sampled at twice the rate of the received symbol and the digital demodulator (22), which has a reduction network. Data in the phase control cycle The segment sync detector (24) uses the abbreviated correlation reference format to lead the choke clock. Example of double the symbol rate Come back for Digital Converters (19) DC Offset Related Since the lead component has been removed (26) from the received signal It is modulated before it is fed into the NTSC interference sensing network (30). The interference sensing network (30) consists of a filter network. Search for subtle responses The stream that has been sampled at twice the symbol rate and represents the delay of the sampled sample. Make it dimensional to avoid glaze in the thoroughly searched frequency band. Thus increasing the efficiency of Measures for NTSC channel interference A receiver for processing a vestigial sideband modulated signal (Vestigial Sideband VSB) that includes Broadcasting high definition television information Terrestrial and lead components containing an input adapter Analog to digital (19) for the production of data streams which can It has been scaled up at twice the rate of the received symbol and the Digital Demodulator (22), which has a reduction network. Data in the phase control cycle The segment sync detector (24) uses a short correlation reference pattern to lead the choke clock. For example, double the return symbol rate for Digital Converters (19) DC Offset Related Since the lead component has been removed (26) from the received signal It is modulated before it is fed to the NTSC interference sensing network (30). The interference sensing network (30) consists of a fine-search filter network that responds to The stream that has been sampled at twice the symbol rate and represents the delay of the sampled sample. Make a dimension to avoid the glaze in the frequency band Have been searched thoroughly Thus increasing the efficiency of Measures for NTSC channel interference

Claims (1)

1. In a system for processing residual sidebar modulated data stream (VSB) containing video stream information It is represented by a group of VSB symbols and interferes with channels. The above information has a frame format. The information that is made up by the data frames in the order they contain. A sync field component that precedes a large number of data checks. A complete set consisting of A device that responds to the above received stream. For generating a demodulated stream Tagged device for filtering streams: