Edtv recording apparatus

Details Edtv recording apparatus Edtv recording apparatus

H - Electricity

04

N

352/18

H04N 9/79 (2006.01) H04N 5/91 (2006.01) H04N 9/797 (2006.01) H04N 9/82 (2006.01) H04N 11/24 (2006.01)

Patent

CA 1320566

RCA 85,051 Canada Abstract of the Disclosure Extended definition television (EDTV) signals including a compatible composite wideband signal and a separate helper or extended definition signal are combined, for example, for recording purposes, using frequency multiplexing techniques. The helper signal is applied to a modulator, which produces a suppressed carrier modulated signal, to frequency shift the helper signal to a spectral band above the frequency band occupied by the compatible composite wideband signal. The frequency shifted and wideband signal are then added to form the combined signal.

600116

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