Patent ID: 8374251

Claim:
A digital television receiving system receiving alternative broadcasts comprising: a first tuner having an input receiving a broadcast signal and an output, said first tuner converting a broadcast signal of a first type into a corresponding first type bitstream; a second tuner having an input receiving a broadcast signal and an output, said second tuner converting a broadcast signal of a second type into a corresponding second type bitstream; a multiplexer having a first input connected to said output of said first tuner, a second input connected to said output of said second tuner and an output, said multiplexer outputting a selected one of said first input and said second input; an image decoder having an input connected to said output of said multiplexer and an output, said image decoder decoding a bitstream received on said input into a sequence of decoded images at said output; a resize circuit having an input connected to said output of said image decoder and an output, said resize circuit converting said sequence of decoded images of said image decoder to a sequence of images having a fixed size of a corresponding display; a plurality of frame buffers connected to said resize circuit, each frame buffer storing a corresponding reference frame image of said fixed size from said resize circuit; and wherein said image decoder is further connected to said plurality of frame buffers, said image decoder decoding said received bitstream in response to said reference frame images stored in said plurality of frame buffers.