Importance

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Abstract

A system for controlling a channel/band selective microcomputer programmed indirect frequency synthesis tuner is disclosed. Separate groups of VHF, UHF or CATV channels are programmed by means of a key switch having various positions of engagement corresponding to individual groups of channels. Following key switch selection of a given group of channels, any number of channels within that group may be programmed for viewing by means of channel UP and DOWN selector keys. A RAM is used to store 'saved' and 'skipped' channels for each key switch position. A backup non-volatile MNOS memory is provided for preserving stored data in the event AC power is removed. Also provided is programmable raster blanking for audio-only channels thus eliminating unwanted video snow. Front panel LED indicators inform the programmer of the status of each channel during television receiver programming. The television receiver is turned on by viewer selection of either the channel UP or DOWN control resulting in tuning to either the lowest or highest 'saved' channel. The OFF function is activated anytime an attempt is made to advance past either the highest or lowest programmed channel by providing either a channel UP or DOWN command, respectively. Thus, television receiver control is by means of a single user selector. A wired remote controller with a speaker is also provided.

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First Claim