Abstract: An antenna internally contained within a housing of a cordless telephone is configured generally as a plate disposed opposite the earphone transducer, and away from the user's face in position for normal use. The antenna is disposed to lie generally vertically, and is counterpoised against a generally vertically disposed circuit board. Configuring the antenna generally as a plate and placing it outboard away from the user's face minimizes detuning effects during normal handling in use. Optional side extensions to the plate increase the antenna capacitance. An optional counterpoising shield may be interposed between the receiver-transducer and the antenna plate to further minimize detuning effects. Mode switches are disposed in a position on the handset remote from the antenna to further minimize detuning effects during switching operations.

Abstract: A vehicle mounted mobile transceiver (11) communicates via a secondary mobile unit (51) with a short range portable unit (10). The portable unit (10) can be either a cordless microphone or a transceiver. The portable unit (10) allows a remotely positioned operator to transmit messages to a base station (13). To ensure security and reliable operation, the portable and vehicle mounted units use strobe initiated digitized codes for ID and instruction purposes. These codes are newly generated from time to time by the vehicle mounted unit and are imparted to the portable unit via a battery charging interface. An improved remote squelch detect is also provided.

Abstract: A cellular telephone unit includes logic circuitry designed or programmed automatically to expand (recursively or iteratively) keystroke sequences containing recall commands by substituting the contents of a memory location specified by any recall command for the recall command itself. When a call is being initiated, any transmission keystrokes in a fully-expanded keystroke sequence occuring prior to a first pause command are transmitted over a signalling channel; transmission characters thereafter are transmitted on a voice channel.

Abstract: A unitary sun visor and cellular telephone with means for transmitting and receiving telephone cells, answering incoming calls when a vehicle is unoccupied for maintaining contact with others, recording incoming calls when a vehicle is in motion, recording information, such as travel expenses and dictation for subsequent transcribing while on the road, and playing pre-recorded tapes while on the road. The unitary apparatus is adapted to be mounted to a vehicle's body structure above the vehicle's instrument panel, forward of the front seat occupant, and has an outer panel with opposing surfaces which is adjustable to a downward extending shading position and to an upward non-shading position adjacent to the vehicle's headliner.

Abstract: A vehicle mounted mobile transceiver having a first and second frequency (11) communicates via a secondary mobile unit (51) with a short range portable unit (10). The portable unit (10) can be either a cordless microphone or a transceiver having a third and fourth frequency. The portable unit (10) allows a remotely positioned operator to transmit messages to a base station (13). To ensure security and reliable operation, the portable and vehicle mounted units use range burst signals and missed message signals to monitor receipt of data signals at the portable unit. The portable and secondary mobile unit communicate with one another via a first pair of frequencies and the vehicle mounted mobile transceiver and the base station communicate with one another via a second pair of different frequencies.

Abstract: Japanese language symbols are entered into a telephone keypad for storage in subsequent name/number recall memory. The kata-kana symbol matrix is used to represent the Japanese language. The matrix is stored in memory and selected keys on a keypad are used to progress through the matrix to identify selected entries within the matrix.

Abstract: Automatic light control apparatus for a television camera system utilizing a gated image intensifier wherein a pair of laser diodes illuminate, respectively, a pair of avalanche photodiodes to apply switching voltages to the image intensifier. Low-level gating signals are utilized to activate the laser diodes. The laser diodes are gated on and off in complementary fashion whereby the image intensifier is turned on for pulse intervals inversely proportional to the brightness of the scene being televised.

Abstract: A vehicle cellular telephone is mounted on the side of a vehicle sun visor which is in clear view of a driver when the visor is in the downward shading position. The telephone has a memory for storing selected telephone numbers in accordance with numbers pre-assigned by a user and a dual system of controls for placing outside telephone calls. The dual controls for placing outside calls comprise a first linear array arranged across the lower edge portion of the telephone for "speed dialing" outgoing calls corresponding to the numbers stored by the user in the memory and a second square array of controls for the regular placement of outgoing calls. To "speed dial" an outgoing call, the pre-assigned number which corresponds to the telephone number of the outgoing call stored in the memory is entered into the linear array. To place an outgoing call in the regular manner the telephone number of the outgoing call is entered into the second array.

Abstract: An automobile telephone unit (T) has a main body (11) located in a prescribed position in the cabin of an automobile, a telephone number dialing device (D) electrically connected to the main body (11), and a handset (12) electrically connected to the main body (11) through a connector cord (2) and supportable on the main body (11) when not in use. A takeup mechanism having a reel (R) for winding the connector cord (20) is disposed in the main body (12). A switch mechanism (23, 24) coacting with the takeup mechanism is disposed in the main body (12) for energizing the telephone unit (T) when the connector cord (T) is unreeled a predetermined length from the reel (R) and for de-energizing the telephone unit (T) when the connector cord (20) is rewound on a predetermined length on the reel (R). Even if the automobile is vibrated when it is running on a rough road, the telephone unit (T) is not energized unless the connector cord (20) is unreeled the predetermined length from the reel (R).

Abstract: The invention relates to a method for the use of a portable radio telephone, which has a processor (4) controlling and supervising the operation, a keyboard (7) and a display (6), and a card reader (3), in which case, when the radio telephone is being used, the user identification data required by the radio telephone system are read from the card (1). The identification data (21) of the card (1) of the user authorized to use the radio telephone concerned are recorded in the non-erasable memory (5) of the processor (4), whereupon the radio telephone shifts into a mode locked to this card in such a way that its use is possible with only a certain card (1). By means of this method, protection is achieved against unauthorized use of the radio telephone.

Abstract: A telephone installation comprising a PABX (4) connected to the telephone network, extensions connected to the PABX by inside connections (6), and additional intercommunication devices connected between the PABX and privileged extensions (2). Said additional intercommunications devices comprise a processor module (8) associated with each privileged extension (2) and provided with a radio transmitter-receiver (16-18) and an antenna (20) for interchanging signalling between the privileged extensions (2), and each privileged extension includes at least one additional key which, when actuated, causes said module (8) to operate as follows:to detect ringing current sent by the PABX (4) to said privileged extension (2); andto respond to said detected ringing current by transmitting radio signalling requesting, automatically and with supervision, at least one other extension to intercept the call.

Abstract: An anti-fraud device is mounted internally within a coin-operated telephone to prevent fraudulent calling due to "pin fraud". The device includes circuitry which senses the presence of ground fraud conditions to disconnect the transmitting element from the telephone to prevent the defeat of a coin collect supervisory signal to cause coins temporarily held in the coin hopper to drop into the coin collection box rather than to be returned to the user.

Abstract: A mobile radiotelephone call synchronization method and apparatus for a radiotelephone system utilizing a credit card for payment of calls is disclosed. Call access is denied a mobile unit until the user runs his credit card through a card reader to input credit card information. After checking list having a valid and invalid I.D., and checking the expiration date stored at the mobile telephone, the information is communicated by the mobile unit to a registration computer for approval. If approval is granted, the mobile unit is enabled for the user to make one or more radiotelephone calls.

Abstract: A call arrival notification method for a motor vehicle provided with a telephone system and a theft-preventing system allows the telephone system to be set to the call arrival notification mode. When a call arrives in the call arrival notification mode, the telephone system signals the call arrival to the theft-preventing system. The theft-preventing system transmits indication of the call arrival to a remote control unit which turns on/off the operation of the theft-preventing system, and the remote control unit provides a call arrival notification by a recognizable sound and display.

Abstract: A base station (10), in a radio communication network having at least two telephone lines (111 to 11n) and a plurality of radio telephone sets (121 to 12m), includes radio transceivers (131 to 13k) capable of selecting one of a control channel and a plurality of communication channels. A producing arrangement (16, 141, to 14n) is coupled between the radio telephone lines and the radio transceivers for producing, in response to a first arrival signal arriving at one of the telephone lines, a first call signal which is sent by a first selected transceiver through a first selected channel towards the radio telephone sets. The first selected channel is selected from the idle channels of the communication channels by a selecting arrangement (16 and 17).

Abstract: A credit-card radiotelephone for a vehicle with a door includes a radio transceiver and a control unit with a telephone handset, credit card reader, hookswitch and door switch. The telephone handset has a microphone, a speaker, and a dial. The radio transceiver has a transmitter, a receiver, and a first microprocessor for electronically locking and unlocking the radio transceiver. The credit card reader reads a credit card number and produces an output indicating the read credit card number. The control unit also includes a second microprocessor coupled to the credit card reader for receiving the read credit card number and determining if the read credit card number is valid, coupled to the first microprocessor, hookswitch and the dial for electronically unlocking said transceiver and placing telephone calls when the read credit card number is determined to be valid, and coupled to the door switch for electronically locking said transceiver means when the door is opened.

Abstract: A mobile communication system comprises at least one mobile switching center for accommodating through respective networks a plurality of radio base stations each having an independent radio zone area, the mobile switching center being connected to a telephone through a wire speech path, a mobile station connectable to each of the radio base stations through a radio speech channel; and a multi-connecting device contained in the mobile switching center and having a network between the switching center and an old base station left by the mobile station during communication, a network between the mobile switching center and a new base station entered by the mobile station, and a wire speech path between the mobile switching center and the telephone.

Abstract: A public payphone telephone system providing remote access by telephone devices to telephone lines. There are a plurality of public telephone access modules disposed in separated locations and operably connected to telephone lines for receiving remote telephone transmissions and for connecting them to the telephone lines. Each of the public telephone access modules includes visible indicia of its presence and location and a first interface module for wirelessly transmitting and receiving telephone communications by means of a beam of IR energy (or, alternatively, RF) energy. A remote telephone interface is operably associated with each of the telephone devices for interfacing between the telephone device and the public telephone access modules. Each remote telephone interface includes a second interface module for transmitting and receiving telephone communications by means of the beam of IR energy.

Abstract: To verify that the handset of a cordless telephone unit is still within the radio coverage area of the fixed station, rather than attempt to establish connection with the switched network and verify contact as a result of receiving a dial tone, or dialing a special number in the network, a user can merely activate a radio coverage verification circuit in the handset and fixed station. Through use of these circuits, in addition to the identification number of the station, a code is transmitted. The identification and code, when received by the opposite station, are verified with number and code values stored in that station, and the number and code are then retransmitted as an acknowledgement signal. An annunciator in the handset provides a visual or aural warning to the user if the acknowledgement signal is not received, indicating that the handset is not within the radio coverage area of the fixed station.

Abstract: A radio telephone system has a radio telephone set which has a receiving circuit the power of which is turned on or off in predetermined cycles, a radio connector transmit an ID number of the radio zone where it exists for a longer period than the period of turning on or off the power supply of the receiving circuit of the radio telephone set in predetermined cycles, the radio telephone set compares the ID number of the radio zone received with that stored in a memory, and when the ID numbers fail to coincide with each other, the ID number of the radio telephone set and the ID number of the radio zone received are transmitted as a position entry signal to a radio channel control unit through the radio connector, and the radio channel control unit being adapted to register the ID number of the radio telephone set and that of the radio zone.