Ultrasonic remote control receiver

Claim 2

An ultrasonic remote control receiver for applying a control signal to a selected one of a plurality Of control channels in response to and dependent on the frequency of a received ultrasonic signal comprising: a. pulse forming means producing pulses at a frequency directly related to the frequency of a received ultrasonic signal; b. counter means for counting pulses produced by said pulse forming means and providing a digital indication of the count when activated, said digital indication apearing as a combination of signals on a plurality of counter output lines less in number than said plurality of control channels; c. decoder means for activating one of a plurality of decoder output lines comprising said plurality of control channels in dependence on the digital indication of count receiver at its input: d. transfer means for periodically applying the count indication of said counter on said counter output lines to a corresponding plurality of lines comprising the input of said decoder; and, e. sequence control means for i. activating said counter for a predetermined period of time in response to the production of pulses by said pulse forming means; ii. activating said transfer means to apply said indication of count to said corresponding plurality of lines of said decoder means at the end of said predetermined period; and iii. thereafter resetting and reactivating said counter means.

Claim 3

An ultrasonic remote control receiver comprising: a. pulse forming means producing pulses at a frequency directly related to the frequency of a received ultrasonic signal; b. counter means for counting pulses produced by said pulse forming means and providing a digital indication of the count when activated; c. decoder means for activating one of a plurality of output lines in dependence on the digital indication of count received at its input; d. transfer means for periodically applying the count indication of said counter to the input of said decoder; e. sequence control means for i. activating said counter for a predetermined period of time in response to the production of pulses by said pulse forming means; ii. activating said transfer means to apply said indication of count to said decoder means at the end of said predetermined period and iii. thereafter resetting and reactivating said counter means; and f. means to interrupt operation of said sequence control means upon the termination of pulse output from said pulse forming means and to prevent transfer of said indication of count to said decoder.

Claim 4

An ultrasonic remote control receiver comprising: a. pulse forming means producing pulses at a frequency directly related to the frequency of a received ultrasonic signal; b. counter means for counting pulses produced by said pulse forming means and providing a digital indication of the count when activated; c. decoder means for activating one of a plurality of output lines in dependence on the digital indication of count received at its input; d. transfer means for periodically applying the count indication of said counter to the input of said decoder; e. sequence control means for i. activating said counter for a predetermined period of time in response to the production of pulses by said pulse forming means; ii. activating said transfer means to apply said indication of count to said decoder means at the end of said predetermined period and iii. thereafter resetting and reactivating said counter means; and f. means to interrupt operation of said sequence control means upon the termination of pulse output from said pulse forming means and to prevent transfer of said indication of count to said decoder.

Claim 5

An ultrasonic remote control receiver comprising: a. means for producing square wave pulses at the frequency of an incoming ultrasonic signal; b. frequency divider means receiving said square wave pulses and producing pulses of a submultiple frequency; c. counter means receiving said pulses of a submultiple frequency and producing a digital indication of the count of submultiple frequency pulses received; d. storage means receiving and storing said digital indication and producing said digital indication of count at its output when activated; e. decoder means receiving said digital indication of count from said storage means and producing a signal at one of a plurality of control outputs in accordance with the value of said digital count received; f. sequence control means responsive to timing and signal inputs and providing in sequence: i. a pulse activating said frequency divider; ii. a pulse activating said storage means; and iii. a pulse resetting said counter means in response to a timing and signal input; g. means producing timing pulses from received signals of a predetermined frequency and applying said pulses to said sequence control means; and h. means providing a signal input to said sequence control means in response to the output of said means producing square wave pulses for the duration of the production of said square wave pulses.

Claim 6

An ultrasonic remote control receiver comprising: a. means for producing square wave pulses at the frequency of an incoming ultrasonic signal; b. frequency divider means receiving said square wave pulses and producing pulses of a submultiple frequency; c. counter means receiving said pulses of a submultiple frequency and producing a digital indication of the count of submultiple frequency pulses received; d. storage means receiving and storing said digital indication and producing said digital indication of count at its output when activated; e. decoder means receiving said digital indication of count from said storage means and producing a signal at one of a plurality of control outputs in accordance with the value of said digital count received; f. sequence control means responsive to timing and signal inputs and providing in sequence: i. a pulse activating said frequency divider; ii. a pulse activating said storage means; and iii. a pulse resetting said counter means in response to a timing and signal input; g. means producing timing pulses from received signals of a predetermined frequency and applying said pulses to said sequence control means; and h. means providing a signal input to said sequence control means in response to the output of said means producing square wave pulses for the duration of the production of said square wave pulses.

Claim 7

The ultrasonic remote control receiver as defined in claim 3, wherein said means producinG square pulses is a Schmitt trigger circuit and said means providing a signal input to said sequence controller is a retriggerable monostable multivibrator.

Claim 8

An ultrasonic remote control receiver comprising: a. a pulse forming means producing a train of square wave pulses at the frequency of an incoming signal to be detected; b. sequence control means responsive to said pulse train to produce a plurality of sequential output signals; c. counter means for counting pulses received at an input and producing digital indication at its output of the number of pulses counted; d. decoder means to receive said digital count indication and produce an output control signal at one of a plurality of outputs in dependence on the count indication received; e. transfer means to transfer the digital indication at the output of said counter to the input of said decoder; said sequence control means producing a first output signal effective to apply pulses of said pulse train to said counter for predetermined time periods during the production of said pulse train, a second output signal at the end of each of said predetermined time periods effective to activate said transfer means, but only when said predetermined time period terminates during one of the pulses of said pulse train, and a third output signal effective to reset said counter prior to the beginning of each of said predetermined time periods.

Claim 9

An ultrasonic remote control receiver comprising: a. a pulse forming means producing a train of square wave pulses at the frequency of an incoming signal to be detected; b. sequence control means responsive to said pulse train to produce a plurality of sequential output signals; c. counter means for counting pulses received at an input and producing digital indication at its output of the number of pulses counted; d. decoder means to receive said digital count indication and produce an output control signal at one of a plurality of outputs in dependence on the count indication received; e. transfer means to transfer the digital indication at the output of said counter to the input of said decoder; said sequence control means producing a first output signal effective to apply pulses of said pulse train to said counter for predetermined time periods during the production of said pulse train, a second output signal at the end of each of said predetermined time periods effective to activate said transfer means, but only when said predetermined time period terminates during one of the pulses of said pulse train, and a third output signal effective to reset said counter prior to the beginning of each of said predetermined time periods.

Claim 10

An ultrasonic remote control receiver comprising: a. a Schmitt trigger circuit receiving incoming ultrasonic signals and producing square wave pulses at its output; b. a first monostable multivibrator responsive to said square wave pulses to produce an output pulse of a predetermined duration; c. a second monostable multivibrator interconnected with said first multivibrator to prevent retriggering of said first multivibrator for the duration of said output pulse and to terminate said output pulse upon cessation of square wave pulses; d. an AND gate arranged to pass said square wave pulses to its output for the duration of the output pulses of said first multivibrator; e. NOR gate means arranged to receive said output pulse of said first multivibrator and a delayed invertion of said output pulse of said first multivibrator and to produce at its output a gate pulse immediately after termination of said output pulse; f. AND gate means arranged to produce a transfer pulse at its output upon receiving said gate pulse simultaneously with one of said square wave pulses; g. NOR gate means arranged to receive said transfer pulse and a delayed inversion of said transfer pulse and to produce a reset pulse immediately after termination of said transfer pulse; h. counter means receiving said square wave pulses passed by said first AND gate means and producing at its output a digital indication of the number of pulses received and responsive to said reset pulse to restart said count; i. decoder means producing a control signal at one of a plurality of output lines in dependence on a digital indication at its input; and j. gate circuit means to apply said digital indication at the output of said counter means to the input of said decoder means in response to said transfer pulse.

Claim 11

An ultrasonic remote control receiver comprising: a. a Schmitt trigger circuit receiving incoming ultrasonic signals and producing square wave pulses at its output; b. a first monostable multivibrator responsive to said square wave pulses to produce an output pulse of a predetermined duration; c. a second monostable multivibrator interconnected with said first multivibrator to prevent retriggering of said first multivibrator for the duration of said output pulse and to terminate said output pulse upon cessation of square wave pulses; d. an AND gate arranged to pass said square wave pulses to its output for the duration of the output pulses of said first multivibrator; e. NOR gate means arranged to receive said output pulse of said first multivibrator and a delayed invertion of said output pulse of said first multivibrator and to produce at its output a gate pulse immediately after termination of said output pulse; f. AND gate means arranged to produce a transfer pulse at its output upon receiving said gate pulse simultaneously with one of said square wave pulses; g. NOR gate means arranged to receive said transfer pulse and a delayed inversion of said transfer pulse and to produce a reset pulse immediately after termination of said transfer pulse; h. counter means receiving said square wave pulses passed by said first AND gate means and producing at its output a digital indication of the number of pulses received and responsive to said reset pulse to restart said count; i. decoder means producing a control signal at one of a plurality of output lines in dependence on a digital indication at its input; and j. gate circuit means to apply said digital indication at the output of said counter means to the input of said decoder means in response to said transfer pulse.

Claim 12

An ultrasonic remote control receiver as defined in claim 6 further comprising a monostable multivibrator between the output of said Schmitt trigger circuit and the remaining elements of said receiver.

Claim 13

An ultrasonic remote control receiver as defined in claim 6 further comprising a bistable multivibrator between the output of said Schmitt trigger circuit and the remaing elements of said receiver.

Claim 14

The ultrasonic remote control receiver as defined in claim 7 wherein the hold period of said monostable multivibrator is slightly less than one half the period of said square wave pulses from said Schmitt trigger circuit.