Combining ntsc visual and aural signals with dtv signals

Details Combining ntsc visual and aural signals with dtv signals Combining ntsc visual and aural signals with dtv signals

H - Electricity

04

N

H04N 5/38 (2006.01) H01Q 5/00 (2006.01) H01Q 21/26 (2006.01) H03L 7/185 (2006.01) H03M 13/15 (2006.01) H03M 13/25 (2006.01) H03M 13/27 (2006.01) H03M 13/29 (2006.01) H04J 3/06 (2006.01) H04L 1/00 (2006.01) H04L 27/00 (2006.01) H04L 27/34 (2006.01) H04L 27/36 (2006.01) H04N 5/04 (2006.01) H04N 5/21 (2006.01) H04N 7/08 (2006.01) H04N 7/66 (2006.01) H04N 11/24 (2006.01) H04N 1/00 (2006.01) H04N 11/00 (2006.01) H04N 5/44 (2006.01) H04N 7/24 (2006.01) H04N 7/62 (2006.01)

Patent

CA 2232758

Apparatus and method for television signals transmitted from adjacent NTSC and DTV channels. The NTSC television signals for a first channel are selected from a frequency band including a plurality of channels and this first channel includes NTSC aural and NTSC visual signals. A source of DTV television signals are selected for a second channel in the same frequency band and the second channel is adjacent the first channel. The NTSC visual signal and the DTV signal are combined to provide an intermediate combined signal. The intermediate combined signal and the NTSC aural signal are then combined to provide a combined output signal for application to antenna means for transmitting television signals.

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