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7034899 |
Radio command device
A control unit ( 10 ) superimposes command signals on AC power passing on a power line or network ( 40 ). A command unit ( 20 ) controls and powers an electrical load ( 50 ) such as a motor M. A...
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4980663 |
Automated adjustment of air-core coil inductance
The inductance value of air-core coils are adjusted using automated methods and inexpensive, noncomplicated apparatus. Adjusting tools are provided which displace coil turns in a linear motion with...
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4546335 |
Manual remote sound control for TV and radio and high fidelity
A braided cord and a connector are provided for remote control of a rotary knob.
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4393277 |
Remote tuner control system
A remote tuner control system for responding to command signals transmitted by a user on a full-duplex communication channel. The tuner control system comprises a tone decoder coupled to the...
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4389731 |
Remote control device for touch type tuner of television
A touch type tuner of television is equipped with a touch control mechanism which has a plurality of touch fingers, each thereof having one end abutting against touch buttons of the tuner...
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4305155 |
Exterior mounted remote control television channel selector
An exterior mounted remote control television channel selector for use with a television receiver having a conventional manual channel selector knob is provided. A receiver mechanism is provided...
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4078236 |
Remote switching apparatus
A remote switching apparatus, in which a transmitter is adapted to transmit a predetermined number of bursts of single frequency signal, to designate a particular digit. Preferably the group of...
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4048596 |
Light-activated remote control unit
A remote control unit for an electrical appliance includes a pair of photocells and one or more threshold devices connected to sense differential illumination of the photocells. The threshold...
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3918002 |
Electronic channel selector system with preset-at-power-on feature
An electronic channel selector system for television receivers having a "preset-at-power-on" feature comprised of a discriminator which produces from the power on increasing voltage transient a...
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3914698 |
Electronic selector system
A selector system for energizing a selected one of a plurality of 2 n utilization devices wherein clock pulses are applied to an n stage up-down counter to cause it to count up or down in...
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3911752 |
Remote control apparatus for television receivers
Apparatus for controlling a television receiver by mechanically changing the channel setting thereof from a remote viewing position. The apparatus includes a control shaft having a bore in fitting...
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3909732 |
Electronic control utilizing odd or even counts
Ultrasonic remote control device for television receivers. In the one stepping direction only control steps of odd, and in the opposite direction only control steps of even ordinal number are used....
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3883736 |
Remote control unit
A remote control system adapted to selectively advance one or more selector switches including a source of optical signal disposed in proximity with a first photo cell, a portable return reflector...
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3855535 |
PROGRAMMING SYSTEM FOR A MOTOR-DRIVEN TELEVISION RECEIVER TUNING APPARATUS
A motor driven television receiving tuning apparatus in which a rotor contact of a channel selector switch provides selection of one of a plurality of preset potentiometer voltages required for...
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3828285 |
ELECTRONIC TUNER
An electronic tuner in which a resonant frequency is changed by changing the voltage applied to a variable tuning element, and in which there is provided a base metal, on the face and back of which...
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3810147 |
ELECTRONIC SECURITY SYSTEM
An electronic security system especially adapted for use in retail stores and employing a multi-frequency resonant tag circuit having distinct frequencies for detection and deactivation. A...
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3806843 |
REMOTE MANUAL SWITCHING SYSTEM
A remote-manual switching system includes a plurality of banks of switches, first and second potential sources, a varactor tuner means, and a remote-manual switching means mechanically coupled to...
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3801897 |
CONTROL CIRCUITRY FOR REMOTE TUNING SYSTEM
In a signal receiver having pushbuttons for tuning individual signal channels, a control circuit for a remote tuning system includes a bi-directional motor coupled to first and second potential...
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3755743 |
SIGNAL RECEIVER WITH A PLURALITY OF TUNERS AND AUTOMATIC SWITCHING SYSTEM FOR CYCLICALLY ENERGIZING THE SAME
A signal receiver such as a television receiver has first and second tuners such as a VHF tuner and a UHF tuner. The tuners are capable of being simultaneously rendered into a number of different...
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3743943 |
APPARATUS FOR SUPPLYING A TUNING VOLTAGE TO AN ELECTRONICALLY TUNED FM RADIO RECEIVER FROM THE OSCILLATOR OF AN AM RADIO RECEIVER
The output of a local oscillator of an AM radio receiver tunable from a frequency f 1 to a higher frequency f 2 is supplied to a pulse generator which generates a pulse having constant width and...
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3701945 |
INTEGRATED PUSH BUTTON PANEL FOR CONTROLLING AIRCRAFT INSTRUMENTALITIES
A panel for controlling a plurality of instruments has a centrally disposed numerical keyboard of eleven push buttons and a plurality of digital display means, one display connected with the...
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3654557 |
SYSTEM FOR SELECTING CHANNEL
A system for selecting stations or channels for television broadcasting, wherein a signal from a binary signal generator is fed to a channel selection circuit for driving the same to select a...
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3573684 |
TUNER FOR A WAVE SIGNAL RECEIVER
A variable amplitude DC control voltage, for tuning varactor-diode type tunable circuitry, is developed by a light-controllable voltage source having a light-sensitive device, such as a...
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3448440 |
INTERCEPTOR TRANSFORMER PROXIMITY KEY
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3325593 |
Light actuated portable remote tv control device
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3266021 |
Remote control system using semiconductor switching devices
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3209358 |
Electronically tunable antenna
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3179907 |
Tuning system for television receivers
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3010016 |
Remote tuning radio receiver
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3010015 |
Remote electrical tuner for radio apparatus
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2989688 |
Saturation permeability tuned transistor radio
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2916619 |
Saturated reactor remote control tuning
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2907876 |
Radio receiver in which signal tuned circuits are controlled by remotely tuned local oscillator
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2876345 |
Remote oscillator trunk receiver
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