Abstract: An in-the-ear canal hearing aid comprises a microphone, an amplifier, an electromechanical transducer, for example in the form of a telephone, and an infrared detector. The hearing aid also includes an elongated extraction element for extracting the hearing aid from the ear canal. The extraction element is in the form of an optical conductor for conducting infrared radiation. One end of the optical conductor is mechanically attached to the hearing aid housing in a manner such that the end of the conductor is optically coupled to the infrared detector. As a result, the extraction element is a dual function device in which its second function is to conduct the infrared radiation to the infrared detector of the hearing aid.

Abstract: An apparatus and method for detecting and logging video outputs from a central control unit to one or more television receivers in which a remote unit in or in proximity to the or each television receiver detects by means of a tuned circuit the horizontal synchronization signal frequency of the receiver; the detected signal is modulated and fed to the central control unit where it is demodulated to produce a signal corresponding to the phase of the receiver horizontal synchronization signal characteristic of that receiver, the phase of the time synchronization signal of each of a plurality of video players is compared with the phase of the fed receiver signal to obtain a match; and a microprocessor logs the matched signals.

Abstract: An integrating filter circuit having a reference potential source for supplying the integrating filter circuit with a prescribed reference potential, a transconductance circuit provided with a differential circuit, a variable current source couple to the differential circuit and output means coupled to the differential circuit for outputting an intermediate voltage of the outputs of the differential circuit, a common feedback loop with a comparison circuit coupled between the output means and the variable current source so as to stabilize the intermediate voltage in reference to a reference voltage supplied to the comparison circuit and capacitors coupled between the variable current source and the reference potential source.

Abstract: A facsimile apparatus comprises a communication control unit for establishing a connection, the communication control unit sending station identification data to a calling station and receiving station identification data from a called station for identification of the station, an image data transmission and reception unit, an image reading unit, an image recording unit, a memory for storing the station identification data of selected stations; and a memory control unit for controlling the memory such that, when a call is made to a called station, the station identification data that is returned from the called station is stored in the memory as the station identification data of the selected stations. The communication control unit rejects reception of the image data transmitted from the calling station when the calling station is not included in a list of stations stored in the memory.

Abstract: A computer speaker assembly 22 is disclosed and includes a tweeter or high-frequency speaker 72 which may be selectively moved in relation to a mid-range-woofer speaker 30. Such movement is accomplished by means of a gear 64 and detent 62 arrangement.

Abstract: When a mobile telephone being served by a cellular mobile radio domain served by a first switching exchange equipped for mobile radio communication through base stations for the respective calls moves over to another mobile radio domain similarly served by a second switching exchange, some additional connection and disconnection procedure is provided to avoid keeping the first switching exchange in the call path in order to continue the control of the call after a after a so-called handover procedure has put the mobile telephone into communication with the second switching exchange and therethrough with the first switching exchange. The additional steps involve establishing a direct connection between the second switching exchange equipped communication with mobile units and an exchange equipped for fixed point-to-point telecommunication through which the call passes.

Abstract: A BiCMOS track and hold amplifier provides improved features of pedestal cancellation and feedthrough reduction. A further aspect of the present invention for multi-purpose functional (operational) capabilities, such as an operational amplifier, a track and hold configuration, an emitter follower, or a cable driver type configuration, based upon common architecture.

Abstract: A docking target (10) includes three concentric circles (C1, C2, C3) each comprising a plurality of different color light emitting diodes (D1, D2, D3) spaced about the circumference of each circle (C1, C2, C3). During vehicle approach, each circle appears initially as a light spot, then a continuous ring of light and finally a plurality of independent light points at defined distances of the vehicle (14) from the station (12) so that the operator can determine distance of the vehicle (14) to the target (10). The light emitting diodes (D1, D2, D3) on each circle, when visible, provide attitude information of the vehicle (14) with respect to the station (12) by the intensities of the light emitting diodes (D1, D2, D3) and the geometric shape produced thereby so that the operator can adjust the attitude of the vehicle (14) with respect to the station (12).

Abstract: A handover method for a cellular radiotelephone networks in which, a call having been set up with a mobile via a first transceiver of a first cell, the handover consists in handing over to a second transceiver of a second cell and in switching in the mobile from the first transceiver to the second transceiver. The switching instruction interrupts the call in a defined cut-off time interval. The instruction to hand over the call is given under conditions such that the interruption of the call which may result from the handover operation occurs during the defined cut-off time interval.

Abstract: A door phone controller has a door ajar feature for alerting a user that a door was left open. The door phone controller accommodates the door ajar feature in several different ways depending upon how it is configured to interface with the central office line. If the door phone controller is configured to interface with the central office line as an individual station, then when a door is left open, the controller alerts the user via auxiliary alert contacts specifically provided for activating a customer chime. When the door phone controller is configured as a ring-down station, the door phone controller alerts the user that the door was left ajar by dialing a pre-programmed telephone number and sending a door ajar tone. If the door phone controller is configured as an interface with a trunk port, then when the door is left open, the controller alerts the user by ringing the trunk line and also energizing the auxiliary alert contacts.

Abstract: A cellular system access monitor for monitoring and reporting information relating to the operation of cellular telephone systems. The monitor features a cellular telephone of current design, responding to the expanded spectrum of 832 channels. The cellular telephone communicates with a controller using a self-clocking data transmission scheme to improve the reporting and displaying of cellular system parameters, such as cellsite control-channel identification numbers and textual cellsite identification information. Additionally, the monitor employes a calibration feature for measuring and displaying accurately signal strength in decibels. System parameters are shown on a bit-mapped display.

Abstract: In a telecommunications relay system employing automated text-to-speech for conversion of a text message entered by a sound impaired person, the delay between the completion of the automated text-to-speech conversion and the assignment of a live shared attendant for transcribing and transmitting that which the unimpaired person says is eliminated by completing the text-to-speech conversion for each text message and its associated end-of-message code word without the introduction of any delay and, immediately thereafter, accepting and storing the unimpaired person's speech into a voice buffer at least until a live attendant is assigned to the relay session. When an attendant is eventually assigned to the call, the attendant retrieves the speech stored in the buffer.

Abstract: A facsimile transmitting and receiving apparatus comprises a facsimile unit having no single-action or abbreviated dialing function connected to a telephone set which provides an automatic dialing device for transmitting a dial single by the single-action dialing or abbreviated dialing operation and a signal processor for automatically outputting a selection control signal for executing facsimile transmission after call originating operation and operates with a power supply voltage supplied through a telephone line.

Abstract: A control unit device and system is provided that allows a verbally handicapped person or normal young child to interact with a remote speech development computer system to assist in the development of verbal communications and cognitive skills. The electronic circuit of the control unit provides an interface to a standard telephone network that allows communications with the remote computer system. The remote computer system consists of a high quality speech synthesizer with a telephone interface, a personal computer, and a controlling software program that contains the speech development exercises. The control unit electronic circuit further provides audio reproduction of the synthesized voice of the remote computer, DTMF (dual tone multiple frequency) tone decoding to control output devices as commanded by the remote computer, and DTMF tone encoding to allow input devices to send signals to the program on the remote computer.

Abstract: The security for a person in a domicile, premise, or dwelling, is increased in the effectiveness thereof, by utilizing a remotely accessible security controlled audio link, which provides a hands free telephone answering system, that operates without the utilization of any conventional telephone located in the domicile. In a normal mode of this audio link, the telephone of a domicile is used in a conventional manner. However, when a telephone in the domicile is not answered within a time period of a designated number of rings, then the remotely accessible security controlled audio link operates to answer the incoming call by, in effect, functioning in an equivalent way, to lift up a conventional receiver, without the conventional receiver ever being raised.

Abstract: An FM receiver includes an IF unit followed by an LF unit, the IF unit having an IF filter arrangement. The center frequency of the IF filter arrangement, which is relatively narrowbanded with respect to the channel bandwidth, is controlled as a function of receiving conditions. The receiver has circuitry for changing the signal transmission characteristic of the IF and/or LF unit, including a detector module for detecting signals characterizing various receiving states, a signal processing unit which changes the amplitude or the time values of signals from the detector module, and a signal linkage unit to create output signals by way of logic and/or time dependent linkage of signals outputted by the signal processing unit.

Abstract: In a communication control device which is operable in a standby mode or in an active mode and which is located between a cordless telephone set and a subscriber connected to the device through a telephone line to carry out communication therebetween by controlling a plurality of radio speech channels and a control channel assigned to the cordless telephone sets, a monitoring operation is carried out at a monitoring period to search for each idle radio speech channel with the number of the idle radio speech channels counted in the standby mode. The monitoring period is changed in dependence upon the number of the idle radio speech channels. Specifically, control is made so that the monitoring period becomes short when the number of the idle radio speech channels is small. This enables quick search for an idle radio speech channel even when an idle radio speech channel is not found.

Abstract: There is disclosed a facsimile apparatus which transmits a predetermined signal, such as CNG signal, during pause periods succeeding the transmission of telephone number signals. This operation prevents the delay of CNG signal detection in case the receiving side has an automatic telephone/facsimile switching function, and also prevents the facsimile communication being erroneously cut off in case the pause period of the calling side eventually overlaps with the CNG detection period of the receiving side.

Abstract: A tele-communication device includes a memory for storing a plurality of pieces of messages transmitted over a communication channel and a display device for displaying the message information read from the memory in response to an operation of a display switch. The pieces of message information are automatically read from the memory in sequence at regular intervals and displayed on the display device while the display switch is depressed continuously. When the display time of a message exceeds a given time, the message is automatically erased from the display. When the display switch is depressed within a given time from when the message is erased automatically, the erased message is displayed again.

Abstract: In a cordless key telephone system for covering multiple service areas, access units are divided into groups corresponding respectively to the service areas, the access units of each group being located in the corresponding service area for broadcasting a recurrent sequence of address signals on a two-way radio control channel and carrying speech signals on an assigned two-way telephone channel. The access units of each group has a uniquely assigned control channel different in frequency from the control channel of the other group. Cordless stations are switchable to the control channel of a first group of the access units for detecting an address signal and subsequently switchable to the control channel of the access units of a second group if the address signal is not detected in a first sequence for detecting the addressed signal in a second sequence.