Abstract: A method and a circuit configuration for flicker reduction in a television set include counting the number of partial areas of a field/frame which have been ascertained to be moving, through the use of a motion detector. When a threshold value is exceeded, a changeover is made from a field reproduction sequence with reduced flicker to a field reproduction sequence with reduced flicker and correct motion. The method can be practiced by using standard components.

Abstract: Multi-channel transmission systems make great demands on the adjustment of the local oscillators in order to minimize carrier frequency variations on the transmission and reception sides. There are prior art processes and arrangements in which the local oscillators are adjusted by means of a synchronism word. The prior art processes and arrangements, however, have the drawback that the oscillators cannot be adjusted accurately enough. The present invention overcomes this drawback in that, in addition to the known synchronism symbols, other synchronism symbols are used and the synchronism symbols are evaluated with increased spectral resolution.

Abstract: In radio transmission systems having a number of radio channels available for transmission, it is necessary to recognize a transmission channel as idle. One known way of doing this is to measure the field strength on the transmission channel and carry out a threshold decision. As soon as the field strength in a transmission channel is below a preset value, this transmission channel is recognized as idle. In measuring field strength, the field strength is averaged over the entire bandwidth of the transmission channel. As a result, a transmission channel that experiences interference from the signals on its adjacent channels may not be recognized as idle, although the adjacent-channel interference has little effect on the transmission quality. The new method makes it possible to recognize the signal present in a transmission channel by means of numerous narrowband field strength measurements.

Abstract: The method pertains to wireless transmission in the common-wave operation. For the operation of common-wave networks, it is required that the modulation contents of the transmission frequencies (1 . . . m) transmitted by the individual transmitting stations are identical. However, in order to enable a station or regional identification, one or more regionally differing additional carrier frequencies (n-3 . . . n) are transmitted, whose reception permits the selection of specific regionally related news or messages in the receiver. The demand of additional carrier frequencies may be reduced to four individual frequencies or frequency groups, if these additional carriers are modulated.

Abstract: The device is a subscriber apparatus with one or more modules interconnected by a bi-directional bus which communicates both digital and analog signals. The module perform different telecommunication functions, such as telephone, telefax, etc. Each module includes storage with a module-specific control program. The control unit may control the whole subscriber apparatus. When a new module is connected to the bus, an identification is assigned thereto which further determines the start address for the module-specific control program.

Abstract: This method is for winding an inner coil of a transformer, the transformer including a ferrite core with an inner groove for receiving the winding, the ferrite core being provided with a radial inlet groove for feeding in and feeding out of the winding wire. The wire is fed through a winding mandrel with a transverse longitudinal bore. The ferrite core is pushed onto the winding mandrel and moved rotatably and axially, thereby forming the inner coil in the inner grove of the ferrite core.

Abstract: The apparatus includes a mobile receiver for digital audio broadcasting. The transmission process is substantially entirely digital and a whole frequency range is used for the terrestrial transmission. The apparatus includes a receiver for a digital radio signal, particularly wherein the filter coefficient is changeable by a control circuit which generates a first value for the filter coefficient to get the real signal component and thereafter generates a second value for the imaginary signal component, whereby with the switching over of the first and second values for the filter coefficient a simultaneous downsampling of the digital signal is performed.

Abstract: A color television system including an encoding device in which the chrominance and high-frequency luminance are sub-sampled in time. In the decoder, the high-frequency of the color television signal of the first and second fields are added thereby eliminating cross-luminance and the demodulated, low-frequency color difference signals are added thereby eliminating cross-color.

Abstract: The apparatus is a radio set wherein a first auxiliary oscillator is provided in the transmission device which is connected to the transmission mixer and during the reception operation, the transmission path between the transmission mixer and the main local oscillator is interrupted by a switch device. The switching off of the transmission frequency can also be achieved in that the transmission path between the transmission mixer and the first auxiliary oscillator is interrupted or between the transmission mixer and the power supply device of the radio set.

Abstract: An office communication system for transmitting data and/or video information through a communication network to a given device and at a given point in time. An automatic selection device is provided having a timer circuit with a calendar function which may be adjusted by the user along with control device. The automatic selecting device makes a connection through the communication network corresponding to the time desired by the user. A data transmission occurs through a communication interface means at a time which is cost favorable to the user.

Abstract: A transmitting and multiple line superheterodyne receiving device and transmitting device for the communications, particularly telecommunications field is disclosed. To suppress the modulation signal components otherwise generated by the transmitting device, a compensation device is provided which includes a frequency control circuit with a voltage controlled oscillator, whose nominal frequency corresponds to the sum or difference of the first and second intermediate frequencies and which is connected to a second receiving mixer.

Abstract: A computer, in particular a personal computer with the voice input and a voice output system thereby allowing the computer to be used as an integrated dictation system.The computer includes analog-to-digital conversion means for converting analog signals corresponding to the spoken word into digital signals. These digital signals are stored in the storage device of the computer. The digital representations are recalled from the storage and converted to sounds by a digital-to-analog conversion means and a headset for the user to listen to while transcribing the words via the keyboard of the computer.

Abstract: In recording systems in which video and audio signals are recorded in tape layers having different depths, a method and apparatus is provided which serves to ensure that the video recording bias for a video signal is always selected and adjusted for optimum results, allowance being made for an audio signal already recorded in the same tracks and for tolerances of the record carrier, the heads and the head amplifier with respect to the playback sensitivity. During recording of the video signal, the video recording bias is varied step-wise. After every change in the video recording bias, a d.c. signal is derived from the playback envelope of the audio signal, the value of the d.c. signal being a measure of the playback amplitude of the audio signal. As soon as the d.c. signal value has reached a predetermined minimum value, the video recording bias is ceased to be changed and the last value of the video recording bias is stored for the next recording process.

Abstract: A video recorder device for electronic cutting of video and FM-audio signals in oblique tracks of a magnetic tape wherein the audio signal is also recorded in a longitudinal track at the tape edge, whereupon erasing the original video signal in the oblique track also results in the undesired erasing of the original FM-audio signal also in the oblique track which is replaced by the audio signal recorded in the longitudinal track being recorded in the oblique track.

Abstract: A method for manufacturing a magnetic head having a sputtered soft magnetic gap region, in which the layer (5, 6) provided on the magnetic core halves (1, 2) is sputtered by means of a magnetron sputtering apparatus. By choosing the material composition of the alloy support--target--and by a suitable choice of the sputtering rates a layer having an increased magnetic property is sputtered on the magnetic core from a target having a weak magnetic property so that a larger material thickness can be chosen for the target.

Abstract: A color television transmission systems including three-dimensional filtering operations at the transmitter and receiver ends with the object of obtaining a lowest possible number of interferences in the form of cross color and cross-luminance on display in which each one of the two color difference signal channels has its own three-dimensional sub-filtering operation, wherein the two sub-filters are dimensioned differently.

Abstract: In known color-under video recorders intertrack chrominance cross talk is eliminated by comb-filtering of the back-converted chrominance signal. However, if the delay circuit needed in the comb filter is a CCD delay line this will give rise to problems both in respect of production engineering and circuit design. These problems are mitigated by the novel comb filter. Comb filtering is applied to the down-converted chrominance signal. The signal path in which the signal is delayed includes a clocked CCD delay line and a phase correction circuit having a linear frequency response and whose dimensioning is such that the overall delay of the chrominance signal corresponds to the signal periodicity imposed by the signal standard and that the phase shift which occurs in the down-converted signal as a result of the recording standard in conjunction with the signal standard is eliminated.

Abstract: A method of soldering an integrated circuit with yielding connecting contacts rigidly mounted on the integrated circuits to printed circuit boards. The integrated circuit is inserted in a clamped manner into a formed opening in a printed circuit board and the connecting contacts are soldered with the conductors by means of customary soldering methods for mass production such as by wave soldering.

Abstract: A device for measuring the optical turbidity, i.e., the soot components in discharge gases of diesel engines, which is relatively simply constructed, operates safely and enables a simple handling even with differently structured measuring devices. This result is achieved in that a controller for controlling the light density of the measuring light beam is optically coupled with a light source. A sample and hold circuit is provided with the values of a measuring detector and the control detector fed to a sample and hold circuit in a time multiplex manner with the measuring values processed in a computer unit. Control values are fed to the light source by means of a control loop. In addition, the computer unit is capable of storing a plurality of measuring values or turbidity values and average value of the stored peak values, whereby the peak values are determined by a dynamic measuring of a defined number of measuring cycles.

Abstract: A method of making of magnetic head having core halves made from ferrite with a sputtered or vaporized soft magnetic alloy of a high permeability such as sendust on the ferrite. The operating magnetic gap of the head is sefined by the soft magnetic alloy of a high permeability. The metal includes providing a longitudinal groove in a ferrite block which serves as the base material and filling this groove with a non-magnetic material such as glass. Thereafter providing vertcial grooves along the block perpendicular to the longitudinal groove. The vertical grooves are vaporized or sputtered with the soft magnetic alloy of high permeability in such a manner that they are completely filled. The block is then halved along the center of the longitudinal groove, ground so as to smooth the adjecent surfaces and provide a coil winding groove and rejoined together via a bonding or adhesive layer. It is then ground to provide the proper head shape with the individual heads then separated from the block.