Fast channel switching method and apparatus for digital broadcast receiver

摘要

A fast channel switching method and apparatus for a digital broadcast receiver having a single tuner are disclosed. The fast channel switching method includes setting an ongoing service channel and at least one standby service channel, buffering broadcast data received through the ongoing and standby service channels, outputting the buffered broadcast data of the ongoing service channel, determining whether the ongoing service channel is switched to one of the standby service channels, outputting, if the ongoing service channel is switched to one of the standby service channels, the buffered broadcast data of the switched standby service channel and resetting the ongoing and standby service channels.

主权项

1. A mobile phone comprising:
a tuner for receiving service channels of a frequency channel; a broadcast demodulator for demodulating the service channels and outputting an ongoing service channel and at least one standby service channel among the service channels; a storage unit for storing broadcast data of the ongoing and standby service channels output from the broadcast demodulator into corresponding buffers and reading out the broadcast data buffered in a buffer of the ongoing service channel; a decoder for decoding the broadcast data read out of the storage unit and outputting video and audio data; a controller for controlling the broadcast demodulator to demodulate the broadcast data, the storage unit to buffer broadcast data of the ongoing and standby service channels and output the buffered broadcast data of the ongoing service channel; and a display for displaying the video data output from the decoder, wherein the controller controls, when the ongoing service channel is switched to one of the standby service channels, the storage unit to read out the buffered broadcast data of the standby service channel as a new ongoing service channel, controls the broadcast demodulator and the storage unit if the standby service channel is an upper neighbor service channel, to delete a Program Identifier (PID) of a lower neighbor service channel and add a PID of the upper neighbor service channel of the new ongoing service channel and controls the broadcast demodulator and the storage unit, if the standby service channel is the lower neighbor service channel, to delete the PID of the upper neighbor service channel of the ongoing service channel and add the PID of the lower neighbor service channel of the new ongoing service channel.