Channel identification apparatus useful in a sweep type...

Details Channel identification apparatus useful in a sweep type... Channel identification apparatus useful in a sweep type...

H - Electricity

04

B

325/117, 365/8

H04B 1/16 (2006.01) H03J 5/02 (2006.01) H03J 7/18 (2006.01) H04N 5/50 (2006.01)

Patent

CA 1156385

RCA 73,145 ABSTRACT OF THE DISCLOSURE In a tuning system for generating a tuning voltage for tuning a television receiver, channel identification apparatus includes a memory for storing binary signals repre- senting boundary voltages having magnitudes corresponding to magnitudes of the tuning voltage between tuning voltage ranges for respective adjacent channels. As the memory locations are addressed, the boundary voltages are compared to the tuning voltages. Control apparatus causes the memory location associated with the next boundary voltage to be addressed and causes channel number apparatus to generate binary signals representing the next channel number when the magnitude of a predetermined one of the boundary voltage associated with an addressed one of the memory locations and the tuning voltage exceeds the magnitude of the other one. Display apparatus displays the channel number represented by the binary signals generated by the channel number means.

352638

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