Channel selector

Claim 2

A channel selector comprising: a binary memory circuit to statically store binary signals corresponding to channels to be selected; a channel specifying circuit to specify the content of said binary memory circuit during channel selecting operation; a group of gates to selectively deliver an output in accordance with the binary output of said binary memory circuit; a plurality of variable resistors which are connected respectively with the output terminals of said group of gates and which have channel selecting voltages to be applied to the variable capacitance diode of an electronic tuner preset respectively thereacross; and a counter circuit which changes its content following the content of said binary memory circuit and delivers change-over signals to change over the frequency bands of said electronic tuner according to the channels stored in said binary memory circuit belonging to a pluralIty of divided frequency bands.

Claim 3

A channel selector according to claim 1, wherein said counter circuit comprises a counter with a multiplexer which counts channel numbers in response to any pulse signal and selectively delivers an output according to any specific one of said plural bands to which some of said counted channel numbers, i.e., content of said counter, belong; a comparator which compares the content of said counter with that of said binary memory circuit; and a gate circuit which stops the counting operation of said counter when said comparator delivers a coincidence signal.

Claim 4

A channel selector according to claim 1, further comprising a channel selecting pulse generating circuit such as a remote control receiver which increases the content of said binary memory by ''unity'' during channel selecting operation, a pulse generator which further increases the content of said binary memory circuit only when none of said group of gates deliver outputs, and a gate which prevents the pulse signal of said pulse generator from being fed to said binary memory circuit when any of said group of gates delivers an output.

Claim 5

A channel selector comprising: a binary memory circuit which statically sotres binary signals corresponding to the channels to be selected; a key board which sets any desired channel in said binary memory circuit during channel selecting operation; a remote control receiver which increases the content of said binary memory circuit by ''unity'' during remote control channel selecting operation; a group of gates which as a whole selectively deliver an output in response to the binary outputs of said binary memory circuit; a plurality of variable resistors which are connected respectively with the output terminals of said group of gates and which have channel selecting voltages to be applied to the variable capacitance diode of an electronic tuner preset respectively thereacross; a combination of a gate and a pulse generator which sequentially increases the content of said binary memory circuit only when none of said group of gates deliver outputs; a counter with a multiplexer which counts channel numbers in response to any pulse signal and selectively delivers an output according to any specific one of a plurality of frequency bands to which some of said counted channel numbers, i.e., content of said counter, belong; a comparator which compares the content of said counter with that of said binary memory circuit; and a gate circuit which stops the counting operation of said counter when said comparator delivers a coincidence signal.

Claim 6

A channel selector comprising: a binary memory circuit which statically sotres binary signals corresponding to the channels to be selected; a key board which sets any desired channel in said binary memory circuit during channel selecting operation; a remote control receiver which increases the content of said binary memory circuit by ''unity'' during remote control channel selecting operation; a group of gates which as a whole selectively deliver an output in response to the binary outputs of said binary memory circuit; a plurality of variable resistors which are connected respectively with the output terminals of said group of gates and which have channel selecting voltages to be applied to the variable capacitance diode of an electronic tuner preset respectively thereacross; a combination of a gate and a pulse generator which sequentially increases the content of said binary memory circuit only when none of said group of gates deliver outputs; a counter with a multiplexer which counts channel numbers in response to any pulse signal and selectively delivers an output according to any specific one of a plurality of frequency bands to which some of said counted channel numbers, i.e., content of said counter, belong; a comparator which compares the content of said counter with that of said binary memory circuit; and a gate circuit which stops the counting operation of said counter when said comparator delivers a coincidence signal.