Digital broadcast receiving apparatus and digital broadcast receiving method
AssigneePanasonic Corporation
InventorsKohsuke Yamamoto, Tomohiko Taniguchi
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Abstract
Disclosed is a digital broadcast receiver which includes a TS processing unit. The TS processing unit comprises reference packet detection units (162a, 162b), that detect timing information of two sets of received TS packet data, a delay adjustment unit (163) that aligns the processing timings of both sets of TS packet data by delaying one of the two sets of TS packet data based on the detected timing information, and a selection unit (165) that selects by packet one of the two sets of TS packet data for output.
Claims5
A digital broadcast receiver comprising:
- a plurality of tuning units that acquire, from among OFDM signals received with an antenna, OFDM signals of a tuned-to frequency band;
- a plurality of demodulation units that perform demodulation processes on a plurality of OFDM signals received from the plurality of tuning units;
- a diversity combining unit that receives equalized signals output from the plurality of demodulation units, calculates a weighing ratio, and performs combining of equalized signals for each one of at least two systems of reception, using the calculated weighting ratio;
- a decoding unit that performs decoding of the diversity combining results the decoding involving error correction;
- and
- a TS processing unit that performs processing of a plurality of pieces of TS packet data information output from the decoding unit, wherein
- the TS processing unit calculates a difference in acquisition timings between pieces of TS packet data information received from each one of the at least two systems of reception and feeds the calculated difference back to the diversity combining unit,
- the TS processing unit synchronizes a processing timing of the pieces of TS packet data information acquired from each one of the at least two systems of reception, by delaying a portion of the pieces of TS packet data information in accordance with the calculated difference in acquisition timings, and
- the diversity combining unit adjusts a difference in the acquisition timings between the equalized signals and uses the difference in the acquisition timings between the pieces of TS packet data information that were fed back to combine the equalized signals.
A digital broadcast receiving method comprising the steps of:
- acquiring, with a plurality of tuning units, OFDM signals of a tuned-to frequency band from among OFDM signals received with an antenna;
- demodulating, with a plurality of demodulation units, a plurality of OFDM signals received from the plurality of tuning units;
- receiving, an equalized signal outputted from the plurality of demodulation units, calculating a weighting ratio, and combining the equalized signal for each one of at least two systems of reception, using the calculated weighting ratio;
- performing decoding of the diversity combining results involving error correction;
- and
- performing TS processing, with a TS processing unit, of a plurality of pieces of TS packet data information output by the decoding unit, wherein
- in the TS processing, a difference in acquisition timings between pieces of TS packet data information received from each of the at least two systems of reception is calculated and the calculated difference fed back to the diversity combining unit,
- the processing timings of the pieces of TS packet data information acquired from each of the at least two systems of reception are synchronized, by delaying a portion of the pieces of TS packet data information in accordance with the calculated difference in acquisition timings, and
- in the diversity combining, the equalized signals are combined after adjusting the difference in acquisition timings between the equalized signals, using the difference in acquisition timings between the pieces of TS packet data information that were fed back.
Dependencies are inferred from the claim text.