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: 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: 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: The television set which includes a separate modular video screen and a separate receiver both of a generally flat configuration with the video screen pluggable (connectable) at a plurality of outlets in the receiver wherein it is generally perpendicular to the receiver or in tandem therewith.

Abstract: The television set which includes a separate modular video screen and a separate receiver both of a generally flat configuration with the video screen pluggable (connectable) at a plurality of outlets in the receiver wherein it is generally perpendicular to the receiver or in tandem therewith. The video screen being capable of fitting into different positions with respect to the receiver due to the connection therebetween.

Abstract: The invention relates to a container or housing for receiving a small mini tape cassette consisting of at least two movable half sections and adopting it for use in a larger recording/playback device whereby the sections are separated and the tape brought into the pici-up position for the larger device in a relatively automatic manner.

Abstract: A device for heating the front lens of a television camera to prevent an interfering moisture on the lens which includes a heating unit, detachable from the lens tube, comprising a front disc or lens attached to a support plate; a rear disc or lens also attached to said support plate so as to form a sealed chamber between the front and rear disc; and heat coatings deposited on the chamber side surface of the front disc for heating purposes.

Abstract: A television receiver is provided for use as a picture display terminal for electronic peripheral equipment, where a control system with a data-bus is built into the television receiver for multitude of commands and in which the television receiver is intended to be used in addition to the normal direct reception of televised pictures for other possible applications. The television receiver can serve as a monitor for a picture tape recorder, which is equipped for recording independently of the television receiver. A complete television receiving set is provided with automatic transmitter seeking mechanism and electronic channel storage.

Abstract: A system is provided for increasing the recording/play-back time for video tape devices. A tape is utilized on which signals are recorded in one direction for one half the tape width and in the opposite direction for the other half of the tape width. The tape drive mechanism automatically reverses at the end of feed in each direction and when the tape feed direction changes the relative vertical position of the tape head (or heads) with respect to the tape also changes.

Abstract: A method and apparatus are disclosed for the emergency control of model aircraft. The incoming signals to the model are screened and, if missing or outside acceptable limits, the screened signals are replaced with a sequence of preprogrammed emergency signals which control the model into an emergency procedure.

Abstract: A turning mechanism for a tape recorder adapted for reversing a cassette to permit the recording and playing of both tape tracks of a tape cassette. The mechanism includes receptacle means adapted to be positioned in the cassette nest of the recorder containing the tape drive and tape recording elements. The receptacle is adapted to automatically shift the cassette into and out of the cassette nest and to reverse the cassette. Activation structure is provided for accomplishing the shifting of the receptacle to reverse the cassette. The receptacle is mounted on the end of the shaft for symmetrical turning about the axis of the shaft. The shaft is turnably supported on a swing-axle for rotation about the axis of the swing-axle. Control gears are provided for rotating the shaft and the swing-axle respectively depending upon the position of the receptacle in relation to the remainder of the mechanism.