Compatible wide screen television system

Details Compatible wide screen television system Compatible wide screen television system

H - Electricity

04

N

350/3

H04N 11/00 (2006.01) H04N 5/44 (2006.01) H04N 11/24 (2006.01)

Patent

CA 1295411

COMPATIBLE WIDE SCREEN TELEVISION SYSTEM ABSTRACT A wide aspect ratio television system includes memories (40,42,44) for storing and recovering a video input signal in response to read and write clock pulses, respectively. Write clock pulses are deleted (410, Fig 4) to compress edge regions of a wide aspect ratio input signal and read clock pulses are deleted (Fig 8) to restore the signal to its original aspect ratio. The pattern of deleted pulses is preferably altered (404) on a line-by- line basis to reduce visible artifacts of signal decimation. In dual mode receivers which may include provisions for controlling edge blanking or effecting edge interpolation, the pattern of deleted clock pulses may be selected as a function of the type of received signals.

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