Digital broadcast playback system, digital broadcast receiving apparatus, and digital broadcast recording and playback apparatus

A digital broadcast receiving apparatus comprising:

• a tuner that extracts a signal of a particular frequency from digital broadcast signals received at an antenna;
• a demodulator that demodulates the signal of the particular frequency extracted in the tuner and outputs a stream containing video data and audio data;
• a demultiplexer that demultiplexes the stream into a video stream and an audio stream as well as program-related information;
• an AV decoder that decodes the video stream and the audio stream demultiplexed into in the demultiplexer and generates a digital video signal and a digital audio signal;
• a video signal processor that converts the digital video signal generated in the AV decoder into an analog video signal and outputs the signal to a monitor;
• an audio signal processor that converts the digital audio signal generated in the AV decoder into an analog audio signal and outputs the signal to a speaker;
• a memory that stores the program-related information demultiplexed into in the demultiplexer;
• a detector that detects a user's inability to watch video played on the monitor;
• a data transmitter that transmits data to an external apparatus:
• and
• a controller that controls operation of each of the components;
• wherein
• the controller extracts information on a particular program including a broadcasting time from the program-related information stored on the memory, and further generates at least one set of information by adding information on a period during which the user has missed the particular program to the extracted information based on an output of the detector and transmits the set of information to a digital broadcast recording and playback apparatus through the data transmitter.

A digital broadcast recording and playback apparatus comprising:

• a tuner that extracts a signal of a particular frequency from digital broadcast signals received at an antenna;
• a demodulator that demodulates the signal of the particular frequency extracted in the tuner and outputs a stream containing video data and audio data;
• a demultiplexer that demultiplexes the stream into a video stream and an audio stream as well as program-related information;
• a recording and playback controller that records the stream containing video data and audio data output from the demodulator onto a recording medium;
• an AV decoder that decodes the video stream and the audio stream demultiplexed into in the demultiplexer and generates a digital video signal and a digital audio signal;
• a video signal processor that converts the digital video signal generated in the AV decoder into an analog video signal and outputs the signal to a monitor;
• an audio signal processor that converts the digital audio signal generated in the AV decoder into an analog audio signal and outputs the signal to a speaker;
• a data receiver that receives data from an external apparatus;
• a memory that stores the data received in the data receiver;
• and
• a controller that controls each of the components;
• wherein
• the data receiver receives, from a digital broadcast receiving apparatus, at least one set of information containing information on a particular program including a broadcasting time and information on a period during which a user has missed the particular program;
• and
• the controller uses the set of information received in the data receiver to read video data and audio data for the period missed by the user in the particular program from the recording medium, and outputs the video data and the audio data to the AV decoder.