H - Electricity – 04 – N
Patent
H - Electricity
04
N
350/36, 350/57
H04N 7/01 (2006.01) H04N 5/44 (2006.01) H04N 11/08 (2006.01)
Patent
CA 1231172
ABSTRACT A DECODER FOR EXTRACTING A 4:3 ASPECT RATIO SIGNAL FROM A HIGH DEFINITION TELEVISION SIGNAL In a television receiver, a demultiplexer (400) for a high definition multiplexed analog component tele- vision signal has line stores (411 to 414) for storing samples of each component signal. A selection code decoder (422) produces a code (220) selecting a group of samples for each component signal according to the aspect ratio of the television receiver display, and/or according to the aspect ratio of the picture contained in the high definition multiplexed analog signal so that the selected group is the one that provides picture information which fits the aspect ratio of the display. A timing unit (417) responds to the code (220) so that the selected samples for one scan line are first stored during the active scan line time and then read out sequentially during the sub- sequent scan line time. The stored samples of each component signal are read out sequentially during substantially the same time period to provide the required Y, U, V signals. A similarly designed demultiplexer may be used to process an extended aspect ratio frequency multiplexed signal such as a high definition NTSC-formatted signal.
473399
Carlson Curtis R.
Reitmeier Glenn A.
Eckersley Raymond A.
Rca Corporation
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