Patent ID: 8213522
Filing Date: 2012-07-03
Classification: H04H,H04N

Abstract:
1. A digital broadcast receiving apparatus which receives a radio wave including a first digital broadcast and a second digital broadcast that are compressed, and outputs video data of the first or the second digital broadcast, said digital broadcast receiving apparatus comprising: a receiving unit configured to receive the radio wave; a demodulating unit configured to demodulate the radio wave received by said receiving unit into a digital signal; a counter which counts a count value using a clock generated from referential clock information included in the digital signal; a first decoding unit configured to decode video data of the first digital broadcast included in the digital signal, and to output first video data that is decoded; a second decoding unit configured to decode video data of the second digital broadcast included in the digital signal, and to output second video data that is decoded; a selection unit configured to select one of the first video data outputted by said first decoding unit and the second video data outputted by said second decoding unit; and an output unit configured to output the one of the first video data and the second video data that is selected by said selection unit, wherein said first decoding unit includes: a synchronous decoding unit configured to output, when the first video data is selected by said selection unit, the first video data when a difference between a time stamp and the count value is smaller than a predetermined value, the time stamp being included in the digital signal and indicating time at which the first video data is displayed; and an asynchronous decoding unit configured to output, when the first video data is not selected by said selection unit, the first video data with timing delayed or accelerated by as much as an offset value with respect to timing of predetermined periodicity.