Electronic multiple channel tuner
AssigneeCurtis Mathes Manufacturing Co.
InventorErwin J. Dreiske
Life of this patent
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Abstract
An electronic tuner, particularly suited for a VHF/UHF television receiver using voltage tuned circuits. A two digit decimal channel selector has a binary coded output. The output representing the channel selected is connected with both a VHF decoder and a UHF decoder which includes a memory programmed for a plurality of UHF channels. A memory scanner and a comparator choose the selected UHF channel from the memory and actuate the tuning means for the selected UHF channel. A UHF programmer directs storage of channel indicia at a selected address in the memory.
Claims15
A multiple channel tuner, comprising:
- means for tuning each of a plurality of signal channels;
- a memory with plural channel indicia stored at discrete addresses, the tuning means for each channel being operatively associated with the respective memory address;
- means for selecting a desired signal channel and for generating channel representing indicia corresponding thereto;
- means for comparing the selected channel representing indicia with channel indicia stored at various addresses in said memory;
- and
- means operative if the selected channel representing indicia corresponds with stored channel indicia, and responsive to said comparing means for actuating the tuning means for the selected channel.
A multiple channel tuner comprising:
- means for tuning each of a first set of plural signal channels;
- a memory with channel indicia for plural channels from said second set of signal channels stored at discrete addresses, the tuning means for the second set of signal channels being operatively associated with the respective memory addresses;
- means for selecting a desired signal channel from either of said sets and for generating indicia corresponding thereto;
- means for comparing the selected channel indicia with channel indicia stored at various addresses in said memory;
- means coupled to said comparing means responsive to coincidence of the selected and stored channel indicia for actuating the tuning means for the selected channel;
- means responsive to indicia representing one of said first set of signal channels to actuate the tuning means therefor;
- and
- means responsive to selection of a channel in said first set of signal channels to inhibit operation of said comparing means.
A multiple channel television receiver tuner, comprising:
- means for tuning each of plural VHF signal channels;
- means for tuning each of plural UHF signal channels;
- a two digit decimal keyboard for selecting a desired signal channel, said keyboard having a binary coded decimal coded channel;
- a VHF channel indicia decoder connected with said keyboard;
- means responsive to said VHF decoder to actuate a selected VHF channel tuning means;
- a memory with binary coded decimal UHF channel indicia for plural UHF channels stored at discrete addresses, the tuning means for the UHF signal channels being operatively associated with the respective memory addresses;
- means for comparing the selected channel indicia from the keyboard with channel indicia stored at various addresses in said memory;
- and
- means responsive to coincidence of the selected and stored indicia for actuating the tuning means for the selected UHF channel.
In a multiple channel tuner having a plurality of discrete tuning means each adjustable for tuning one of a plurality of signal channels and a memory for storing indicia identifying the channel for which each tuning means is adjusted, each of said tuning means being associated with an address in said memory, whereby on selection of a channel, the memory identifies the tuning means therefor, improved means for programming said memory, comprising:
- means for selecting a channel and for generating channel indicia identifying the selected channel;
- means independent of the channel selecting means for choosing an address in said memory for the selected channel indicia, said memory having a capacity to store indicia for fewer than all said plurality of signal channels;
- and
- means for writing said selected channel indicia at said chosen address, including means for scanning addresses in said memory and means for writing said selected channel indicia in said memory when the scanned address corresponds with the chosen address.
Dependencies are inferred from the claim text.