Patent ID: 7802282

Claim:
A content detecting device for a receiver that receives and decodes a digital broadcast signal or a recording apparatus that records the digital broadcast signal, comprising: a program-related-information acquiring unit for acquiring program specific information, which is information for decoding the digital broadcast signal, and electronic program guide information, which is information for creating an electronic program guide, included in a multiple stream of the digital broadcast signal; a memory that stores the program specific information and the electronic program guide information acquired by the program-related-information acquiring unit; a detecting unit that detects a commercial included in the digital broadcast signal, the detecting unit outputs detection information indicating detection of the commercial, and causes the memory to store the detection information when based on a comparison: a) one of the program specific information and electronic program guide information indicates the presence of one of a closed captioning broadcast and a data broadcast, and b) another of the program specific information and electronic program guide information indicates the absence of one of a closed captioning broadcast and a data broadcast; and a discriminating unit that reads out the detection information from the memory, discriminates the detection of the commercial, and outputs a signal for distinguishing a program and the commercial, wherein when there is a descriptor indicating the presence of one of the closed captioning broadcast and the data broadcast in the program specific information, and there is not a descriptor indicating the presence of the one of the closed captioning broadcast and the data broadcast in the electronic program guide information, the detector detects the commercial.