TH38007A - Network sync segment for high definition television sets. - Google Patents

Abstract

DC60 (23/11/41) Remaining sidebar modulated signal processing receiver that contains Terrestrial broadcast high definition television information and leading components Contains analog-to-digital input converters (19) for producing data streams which are Sampled at twice the rate of symbols received And Digital Demodulator (22), which has a network Reduce the data in the phase control cycle. Segment sync detectors (24) use the abbreviated correlation reference format to restore a sampling clock that is twice the symbol rate for the digital converters (19). In connection with 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 responsive fine-search filter network. Per stream sampled at twice the symbol rate And shows the retention Dimensionaled samples to avoid glaze in the thoroughly searched frequency band. This enhances the efficiency of the NTSC channel interference measurement, the left sidebar modulated signal processing receiver that contains terrestrial broadcasted high definition television information and components. A lead containing an analog-to-digital input converter (19) for producing a data stream sampled at twice the received symbol rate. And digital demodulation (22), which has a data reduction network in the phase controlled loop Segment sink detector (segment sync) (24) uses the abbreviated union reference format to restore a sampling clock that is twice the symbol rate for a digital converter. (19) The DC offset associated with the lead component has been removed (26). ) From a pre-modulated signal to be fed to a pre-modulated interference sensing network. NTSC (30) Interference sensing network (30) consists of a fine-search filter circuit network that responds to sampled streams at twice the symbol rate. And it shows a dimensioned sample delay to avoid glaze in the subtly searched frequency band, enhancing the efficiency of the NTSC channel interference measurement.

Claims (5)

1. In a residual sidebar modulated signal processing (VSB) system containing high-fidelity video data that is represented by the VSB symbol group, the above data has a data frame format that It is made up of sequential data frames that contain a zinc field component that precedes many data segments with a corresponding sync segment component. A complete set consisting of A demoliter that responds to the above received signal to produce a demodulated signal. Way for Providing a correlation reference pattern between the syntax segments. And the data correlation device that responds to the aforementioned demodulated signals and to the reference pattern for the measurements of the aforementioned zinc segment components, whereby the correlation reference model The foregoing is used at less than four symbol ranges. 2.A system corresponding to claim 1, where the aforementioned syntax segment consists of the four symbol ranges and the aforementioned correlation reference format is used at the first two of the four symbols. The foregoing 3. A system corresponding to claim 1, where the aforementioned zinc segment component is unique, whereby the reference pattern 1 -1 -1 1 over the four symbols. The schemes 1 and -1 point to the relative amplitude of the aforementioned zinc segment components and the aforementioned correlation reference model as Figures 1 -1 used at the two ranges. The symbol at the beginning of the segment sync. 4. In the sidebar modulated signal processing system there are still (VSB) that contains high-fidelity video data that is represented by a VSB symbol group.The foregoing data contains a data frame format that is composed of sequential data frames containing a sync field component that precedes the segment. A large amount of data with a corresponding zinc segment component. The method consists of the following steps. Modulation of the above-mentioned VSB signal to produce the aforementioned demodulated signal and the modulated signal correlation using a correlation reference pattern. That is made during a sync segment, where the aforementioned correlation reference model uses less than four symbol ranges. 5. Method consistent with claim 4, where the foregoing correlation reference model is applied at the first two periods of the foregoing four symbols.