Abstract: An arrangement in a television receiver in which a sychronized external power stage supplies operating voltage to a remote-control receiver and a microprocessor connected thereto. A horizontal drive circuit is controlled by the microprocessor, and a horizontal end stage is connected to the horizontal drive circuit. The external power stage supplies power during stand-by operation only to the remote-control receiver and microprocessor along with the voltage for operating the horizontal drive circuit and the end stage. Thyristors are connected to the external power stage for supplying power to all other circuit stages in the television receiver. The thyristors have gate electrodes activated by the horizontal end stage for cutting off the thyristors during the stand-by operation and interrupting the supply of power to all other circuit stages in the television receiver, for minimizing the power consumption of the television receiver.

Abstract: 1. Circuitry for automatically switching the control speed of a phase-control circuit.2.1. The switching is, especially in conjunction with different signal sources employed with a television receiver, either difficult or possible only by reserving prescribed program locations. The advantage of the invention is that it becomes possible to switch over without great expenditure to the higher control speed only while necessary and back to the low speed when it no longer needs to be high.2.2. The invention is characterized in that a control circuit 12 increases the control speed, independent of whatever signal source is being employed to produce the picture, only during vertical flyback.2.3. The circuit can be employed in television receivers to reproduce both broadcast television signals and video signals from a recorder connected to the receiver.

Abstract: A television set with videotext and/or teletext decoders having character generators which are synchronized by the deflection generators of the television set and in which audio will be forwarded only when an authorized television signal is being received and in that a memory in the decoder will be accessible to display a recognizable image even when the television transmitter is turned off.

Abstract: An arrangement for generating a voltage waveform having a triangular shape, in which a first voltage waveform having a sawtooth shape is added to a second voltage that has a sawtooth shape with horizontal components during predetermined intervals of the second voltage waveform. A biased diode bridge applies the horizontal components to the second voltage waveform, which has peaks equal to the peaks of the first voltage waveform. Upon adding the first and second voltage waveforms, a voltage waveform with triangular shape is generated.

Abstract: An arrangement for automatic switching of the regulating speed of a phase regulating circuit, in which the regulating speed is not switched abruptly. The regulating speed is, instead, switched either discontinuously or continuously, so that it does not attain a high level before the midpoint of the synchronizing pulse. The regulating speed is increased within a synchronizing window to an increasing extent up to the midpoint of the window, whereas the regulating speed decreases to a decreasing extent from that midpoint. The regulating speed of the phase regulating circuit is associated with the horizontal deflection in a television receiver, where interference in the vicinity of the synchronizing pulse has a detrimental effect, particularly near the edges.

Abstract: Circuitry for limiting a rectified operating voltage.To recover energy from unutilized power from the secondary winding of a switching-network transformer, it is recirculated to the primary winding through a diode. When appliances fail, the excess energy component can increase to the extent that components are destroyed because the operating voltage increases.To prevent this situation the excess energy is recirculated into a higher operating voltage U.sub.S through a diode and through another secondary winding of the transformer. The number of turns in the second secondary winding and its polarity ensure that the flyback voltage U.sub.R will be higher than the difference between U.sub.S and U.sub.B.Switching-network components in conjunction with rectifier modulators in television receivers.

Abstract: A device enables to reproduce without flicker mixed signals from VT and/or BTX decoders during the reproduction of television signals (mixed operation). This is obtained by a video frequency scanning field compensation in the vertical direction effected by a video frequency additional connectable scanning amplifier which supplies a reduced inductivity additional scanning winding.

Abstract: An arrangement in which the horizontal deflection circuit with deflection winding, driver circuit and storage inductance are associated with a side linked with the network, whereas the windings for production of high and operational voltage as well as the horizontal oscillator with phase comparator and the vertical deflection coil, together with their trigger circuits are separated or isolated from the network. The regulating information for the regulation of the circuit network part mounted on the side linked to the network is taken from a regulation circuit separate from the network and transmitted by way of a network-separating combining circuit.

Abstract: A circuit is provided for the correction of east-west pincushion distortions on the picture screen of a television receiver. The circuit includes a diode modulator, which is controlled via a coupling coil from a control stage switched by a horizontal scanning frequency, frame frequency modulated rectangular signal as well as a diode connected to the coupling coil for returning of stored energy to an electrical energy supply source of the television receiver. An electronic switch is connected in parallel to the diode. A rectangular pulse signal is applied to the control electrode of the electronic switch. The polarity of the switching connection provided by the electronic switch is opposite to that of the diode. The electronic switch permits a current directed oppositely to the current running through the diode to pass through the coupling coil during the nonconducting phase of the control stage.