Abstract:
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. During the control operation alternate steps are skipped until an overshoot condition is reached at which point one reverse step brings the control to the desired position. This results in an increased number of steps, in a control of finer graduation and in a rapid reset.
Abstract:
A polarizing DC voltage is generated at the capacitance of an ultrasonic transducer and then short circuited by a parallelly arranged electronic switch controlled by the command signal frequency to be radiated. A direct current stored in an inductance during the shorting phase is supplied by way of a decoupling diode to the electrodes to the electrostatic transducer upon opening of the switch thereby generating a polarizing DC voltage for the transducer which is regenerated periodically. For achieving additional energy recuperation, a booster capacitor is disposed in series with the inductance and a booster diode is connected in parallel with the booster capacitor and a portion of the inductance.
Abstract:
Digital storages have outputs providing analog voltages that are controlled by stepping pulses at forward and backward setting inputs. A manual potentiometer associated with a frequency dial provides a voltage of opposite plurality to that of the digital storages. Programming of a digital storage is accomplished by connecting stepping pulses to the setting inputs and connecting the output to a comparator circuit having a bridge which also is connected to the potentiometer voltage. The comparator circuit provides an output to gates disposed at the forward and backward setting inputs of the storages for controlling the forward and backward stepping pulses passed to the storage being programmed so that the analog output voltage from the storage being programmed is set to be equal and opposite to the manually set potentiometer voltage.
Abstract:
A multistable device consisting of an emitter, an accelerating electrode and a collector, serving as the controlling element in conjunction with a control circuit, is used e.g. for the remote control of television receivers. The charge carriers as accelerated in the device, serve to supply atoms with excitation energy in the quantum-mechanical way by passing through various minimum and maximum speed values. From this, dynamic characteristics are obtained with multi-stable operating points. A closed control circuit is formed between the collector and the accelerating electrode, for causing stabilization at one of the possible voltage or current steps. Momentary variation of the accelerating voltage will effect the changing to different voltage or current steps.
Abstract:
In a remote control system of the type that controls a number of operating functions by transmitting a number of frequencies corresponding to the operating functions to be controlled, a receiver including receiving means that is tuned by a fixed capacitor and a number of additional capacitors that are periodically connected in parallel combinations with the fixed capacitor by an electronic rotary switch so that the receiver is successively tuned to each of the possible transmitted frequencies. An amplitude filter means is provided for sensing an increased receiver means output when the receiver means is tuned to the frequency being transmitted and for providing an output during the period when the receiver is so tuned. The electronic rotary switch successively connects the receiver means output to the operating function corresponding to the frequency to which the receiver means is tuned. Whereby an operating function receives an operating pulse if the transmitter is tuned to the frequency corresponding to that particular operating function.
Abstract:
A battery-powered control signal transmitter for remotely controlling equipment such as television receivers is provided. A remote-control transmitter is of the finger-touch type wherein different control functions, such as channel switching, volume, brightness, and the like are controlled via finger-touch electrodes rather than mechanical operational control.