Abstract: A headband radiophone combination set uses a control circuit and a receiver-transmitter circuit to reciprocally transmit or receive signal through an antenna to communicate with the antenna and the receiver-transmitter circuit of a main switching unit for internal, external and regular alternative telecommunication.

Abstract: An interface (10) is disclosed for coupling a conventional pay station telephone (12) to a telephone switching system (16). The interface (10) provides supervision signal detection functions normally provided by a switching system, and thus can be connected thereto by a less costly business line (28). The interface includes processor controlled tone generators (72, 76) and detectors (73, 74, 81, 106, 108) for detecting tones and voltages transmitted by either the telephone (12) or the switching system (16). The interface (10) further includes a detector (106) and a procedure (FIG. 8) for providing an answer call indication. Coin collection or return is controlled by the interface (10) depending on the status of the call which is also determined by the interface (10).

Abstract: An interface (10) is disclosed for coupling a conventional pay station telephone (12) to a telephone switching system (16). The interface (10) provides supervision signal detection functions normally provided by a switching system, and thus can be connected thereto by a less costly business line (28). The interface includes processor controlled tone generators (72, 76) and detectors (73, 74, 81, 106, 108) for detecting tones and voltages transmitted by either the telephone (12) or the switching system (16). The interface (10) further includes a detector (106) and a procedure (FIG. 8) for providing an answer call indication. Coin collection or return is controlled by the interface (10) depending on the status of the call which is also determined by the interface (10).

Abstract: An interface (10) is disclosed for coupling a conventional pay station telephone (12) to a telephone switching system (16). The interface (10) provides supervision signal detection functions normally provided by a switching system, and thus can be connected thereto by a less costly business line (28). The interface includes processor controlled tone generators (72, 76) and detectors (73, 74, 81, 106, 108) for detecting tones and voltages transmitted by either the telephone (12) or the switching system (16). The interface (10) further includes a detector (106) and a procedure (FIG. 8) for providing an answer call indication. Coin collection or return is controlled by the interface (10) depending on the status of the call which is also determined by the interface (10).

Abstract: A delivery system for the selective dissemination of information to subscribers uses a non-telephone authorizing signal to authorize the subscriber stations for which information is to be delivered. The subscriber station, when authorized, dials up a predetermined number to form a telephone channel through which the information is delivered. The apparatus and method eliminate the need for a dedicated channel serving the station and preferably the subscriber station only seizes a telephone channel when available and therefore may share an existing telephone channel.

Abstract: An interface system for interfacing a standard telephone set with a radio transceiver as part of a telephone network is provided. The radio transceiver may be a conventional cellular-type transceiver or other transceiver having typical control inputs and outputs similar to that provided by cellular transceivers. The interface system converts tone-dial or pulse-dial inputs from the telephone into a serial data stream for storage in the transceiver. The interface system automatically determines when the last numeral or digit is dialed and provides a send signal to the transceiver when such determination is made. The system responds to incoming call signals, such as alert signals, from the transceiver and rings the telephone accordingly. The system simulates ring and dial-tone type signals under conditions typical of standard telephone set usage.

Abstract: A radio communication apparatus comprising a base unit connected to a communication line and a radio terminal unit connected to the base unit via radio circuit. When there is an incoming signal from the communication line in a state in which the radio terminal unit is connected to the base unit, a speaker of the base unit is caused to generate a ring tone. When there is an incoming signal fromthe communication line in a state in which the radio terminal unit is not connected to the base unit, a speaker of the radio terminal unit is caused to generate a ring tone for only a predetermined time.

Abstract: An interface (10) is disclosed for coupling a conventional pay station telephone (12) to a telephone switching system (16). The interface (10) provides supervision signal detection functions normally provided by a switching system, and thus can be connected thereto by a less costly business line (28). The interface includes processor controlled tone generators (72, 76) and detectors (73, 74, 81, 106, 108) for detecting duration of tones and other audio signals, and voltages transmitted by either the telephone (12) or the switching system (16). The interface (10) further includes a detector (106) and a procedure (FIG. 8) for providing an answer call indication. Coin collection or return is controlled by the interface (10) depending on the status of the call (as indicated by audio signal duration) which is also determined by the interface (10).

Abstract: A mobile station for an automobile telephone system comprises a main unit and a telephone set connected to the main unit, for instance, by a curl cord. The main unit includes a power supply which is turned on from the telephone set, a controller for controlling the power supply to be turned on and off in accordance with a control signal supplied from the telephone set, and a detecting circuit for detecting the separation of the telephone set from the main unit. When the detecting circuit detects the separation of the telephone set from the main unit, the controller controls the power supply to be turned off, even if a power supply turning-off signal is not produced in the telephone set.

Abstract: A cellular telephone unit includes selective carrier signal acquisition. Priority of acquisition is given to carrier signals associated with home system identification codes (SIDs), then to any carrier signal associated with a non-excluded SID. Any attempt to dial an emergency call (e.g., a 911 call) overrides any lockout of excluded SIDs. A display such as "roam" and "no service" lights is used selectively to indicate to the user the availability of home and/or non-excluded carrier signals.

Abstract: A remote data logging and telecommunication system utilizing a cordless telephone as a convenient two-way wireless link between a location of data collection and storage and a distant station. The distant station can command the data logging system to log, read or change logging protocols. Password and code word protection is available for the system.

Abstract: A system for providing error-free data communication between first and second personal computers over a conventional cellular telephone system includes an interface adapter coupling the first personal computer to the TDATA, CDATA, and RDATA conductors of a Cellular Subscriber Equipment unit and a cellular connector coupling a modem of the first personal computer to the audio R.sub.x and T.sub.x conductors of the Cellular Subscriber Equipment unit. Data communication between the first and second personal computers is carried over the voice channel of the cellular telephone system. The interface adapter recognizes imminent interfering activity such as a handoff or power adjustment operation or multipath fading by monitoring the TDATA, CDATA, and RDATA conductors of the control channel of the cellular telephone system and so informs the first personal computer.

Abstract: A radio telephone having a base unit connected to a wired telephone line, a handset unit connectable to the base unit over a radio channel and provided with a hook switch, and a charger for selectively charging the handset unit. The handset unit is automatically controlled to either an on-hook state or an off-hook state when removed from the charger, depending upon the hook state in which the handset unit has been held before the start of charging.

Abstract: In an mobile communication system having a transmitting and receiving unit, a control unit, and a handset in a mobile station, it is possible to fix a restriction against a use of a specific function of the mobile communication system, or it is possible to change a restriction against a use of a specific function of the mobile communication system after inputting a security code, enabling the use of only one kind of control unit in the handset.

Abstract: A mobile telephone terminal includes a portable-unit and an adaptor which is capable of mounting the portable-unit on a vehicle and supplying power from a vehicle battery to the portable-unit. The adapter includes a power switch manually generating a switch signal and a delay circuit which delays the switch signal by a predetermined period of time when the telephone terminal is in a communication state and the power switch is depressed in place of a call end key. In response to the delayed switch signal, a transistor switch circuit stops power supply from the vehicle battery to the portable-unit. The portable-unit initiates a call clear process in response to the switch signal and during the predetermined period of time performs and completes the call clear process. In the call clear process, the portable-unit transmits a call clear signal to a base station over a radio channel used and turns off its radio frequency station.

Abstract: A conversion kit, consisting of a two piece adaptor set, allows a conventional non-cordless telephone to be converted to a cordless telephone. Each piece consists of a unitary body which houses a transmitter/receiver therein and a conventional modular male telephone plug. To convert a standard non-cordless telephone to a cordless telephone, the telephone cord is removed and one of the transmitter/receivers is plugged into the socket on the telephone base and the other into the corresponding cord socket on the handset.

Abstract: A public telephone set includes a card controller for reading information recorded in a card and performing conveyance and data processing of the card on the basis of the read information, and a speech controller for performing speech control corresponding to types of cards on the basis of data from the card controller. The card controller includes a card guide port, connected to a first convey path, for receiving plural types of cards and dispensing only a specific type of card, a return port, connected to a second convey path, for dispensing only remaining types of cards which are not dispensed to the card guide port, and a card selector mechanism for switching the cards into the first and second convey paths on the basis of a property inherent to the types of cards inserted into the card guide port, whereby charging processing corresponding to different types of cards is performed.

Abstract: A voice of user is picked up by a microphone built in a sun visor of a vehicle. The output of microphone is frequency-modulated by an FM transmitter powered by a solar battery and transmitted through a transmitting antenna in a vehicle. The frequency-modulated radio signal is received and demodulated by a receiver with a receiving antenna. The received signal is further transmitted outside of the vehicle through a transceiver.

Abstract: A PABX cordless telephone system comprising a base station (10) and a plurality of handset (HS1 to HS5). The base station is connected to the public switching network and communicates with each handset by way of a respective duplex radio link. The operation of the PABX system is controlled by a micro-controller (16) in the base station. Micro-controllers are also present in each of the handsets. Security in the radio communication via the duplex radio links is provided by assigning an n-bit security address code, where n for example comprises 16 bits, to each handset. The signalling protocols in setting-up calls require the transmission of the full n-bit security code. In the interim periods the base station (10) carries out a security check on the handsets forming its system.

Abstract: A method of preventing auto theft utilizes an anti-theft system and a mobile telephone system. When abnormality indicative possible auto theft occurs, the anti-theft system transmits that fact to a remote control unit, which thereby sounds an alarm. The anti-theft system at the same time turns on the power of the mobile telepone system so as to make it ready for being capable of external calls, so that the driver who is remote from the car can ascertain the state of the anti-theft system by calling the mobile telephone system before running to the car.