Patent ID: 7050118

Claim:
A digital broadcast receiving apparatus for selectively receiving a desired channel based on a user instruction from a plurality of channels included in airwaves, comprising: a first tuning unit for extracting from said airwaves first image coded data that corresponds to said desired channel; a second tuning unit for successively selecting one of said plurality of channels as a background channel and extracting from said airwaves second image coded data that corresponds to said background channel; a data storage unit for storing said second image coded data that correspond to the respective ones of said plurality of channels; a first image data decoding unit for receiving and decoding one of said first image coded data and said second image coded data to generate an image signal for image display; and a control unit for determining whether it is possible or impossible to generate said image signal in accordance with said first image coded data based on a determination as to whether an amount of said first image coded data extracted by said first tuning unit has reached a certain amount that allows a normal reproduction; wherein said first image data decoding unit receives and decodes said second image coded data from said data storage unit to generate said image signal for image display when said image display based on said first image coded data is impossible in accordance with the determination of said control unit.