Abstract: An optical transmission/reception unit includes a carrier rotatable around an axis of rotation, an optical receiver arranged at the carrier on the axis of rotation so as to receive an optical reception signal from a first direction, an optical transmitter arranged at the carrier adjacent to the optical receiver so as to emit an optical transmission signal in a second direction, and a transmission/reception optic arranged at the carrier on the axis of rotation above the optical receiver and extending across the optical receiver and the optical transmitter, wherein the transmission/reception optic includes a reception optic and a transmission optic arranged in the reception optic, wherein the reception optic is configured to guide the optical reception signal striking the transmission/reception optic towards the optical receiver on the axis of rotation.

Abstract: An optical transmission/reception unit includes a carrier rotatable around an axis of rotation, an optical receiver arranged at the carrier on the axis of rotation so as to receive an optical reception signal from a first direction, an optical transmitter arranged at the carrier adjacent to the optical receiver so as to emit an optical transmission signal in a second direction, and a transmission/reception optic arranged at the carrier on the axis of rotation above the optical receiver, wherein the transmission/reception optic includes a reception optic and a transmission optic arranged in the reception optic, wherein the reception optic is configured to guide the optical reception signal striking the transmission/reception optic towards the optical receiver on the axis of rotation, and wherein the transmission optic is configured to displace onto the axis of rotation the optical transmission signal emitted by the optical transmitter.

Abstract: A card reader is provided with a read head with a slot and is configured to be coupled to a mobile device and has a slot for swiping a magnetic stripe of a card. The read head reads data on the magnetic stripe and produces a raw magnetic signal indicative of data stored on the magnetic stripe. A power supply is coupled to wake-up electronics and a microcontroller. An output jack is adapted to be inserted in a port of the mobile device and deliver an output jack signal to the mobile device. The wake-up electronics is powered by a microphone bias of a mobile device.

Abstract: A method and apparatus are provided for handling a paging request for a Circuit Switched session, when the paging request is intended for a terminal attached to a Packet Switched cell in a radio access network and having one or more ongoing Packet Switched sessions. The request is received at a node in the radio access or core network to establish a Circuit Switched session with the terminal while the terminal has one or more ongoing Packet Switched sessions. The importance of the ongoing Packet Switched session is determined at the node, and the paging request is rejected if any of the ongoing Packet Switched sessions is more important than the Circuit Switched session. The node may be a MME, an eNodeB or the terminal itself.

Abstract: A system is disclosed for generating text responsive to both voice and handwriting input, including a microphone, stylus, and a tablet having an flat-panel display integrated into its surface. The system performs speech and handwriting recognition using a shared language model, which in one embodiment is trainable responsive to user correction of errors in either speech or handwriting recognition. Various other systems and methods are also disclosed.

Abstract: In order to adjust and decrease an acoustic pressure of a speaker driven based on an audio signal, an infrared communication receiver includes: a receiving section for receiving via infrared communication an audio signal representing audio data; and a speaker driving section for driving a speaker based on the audio signal received by the receiving section. The receiving section includes: a receiving block for receiving the audio signal; and a pulse width expanding and compressing section for expanding or compressing a pulse width of the audio signal received by the receiving block.

Abstract: The infrared communication unit of the mobile phone receives a first data series transmitted from the other-party mobile phone by infrared communication, and, when transmitting a second data series by infrared communication, the controller of the mobile phone controls the infrared communication unit so as to transmit the second data series in response to completion of reception of the first data series. Alternatively, the controller controls the infrared communication unit so as to receive the first data series in response to completion of transmission of the second data series.

Abstract: A method for transmitting a packet in a wireless access network based on a wavelength identification code scheme. The method comprises the steps of connecting n number of RNCs (Radio Network Controllers) to one sub-ring where the “n” is a positive integer, and assigning a unique wavelength to each RNC; identifying a packet to be transmitted between the RNCs located within a same sub-ring using the assigned unique wavelength, and transmitting the packet through an SRC (Sub-Ring Controller); connecting m number of SRCs to one main-ring where the “m” is a positive integer, and assigning a unique wavelength to each SRC; and detaching a wavelength identification code from the packet to be transmitted between the RNCs located within different sub-rings, and transmitting the packet having the encapsulated wavelength identification code through an MRC (Main-Ring Controller).

Abstract: A system and method for linking optical wavelength division multiplexed (OWDM) networks by using wireless communications. Each optical channel in a OWDM network is coupled to a wireless wavelength division multiplexing (WWDM) channel by a WWDM transceiver, which transmits and receives data between OWDM networks. The WWDM transceiver may transmit and receive data in RF bands, where the assignment of different OWDM channels to different frequencies within the RF bands may depend upon the data rate or service supported by the OWDM channel. WWDM systems may also support communications between OWDM networks and individual users, such as those in a local multipoint distribution service.

Abstract: An ultrasonic proximity detector for a telephone device to detect the proximity of an object thereto includes an ultrasound signal generator generating ultrasound that is broadcast by a speaker of the telephone device. Processing circuitry is coupled to a microphone of the telephone device. The processing circuitry processes broadcast ultrasound that is picked up by the microphone to detect the proximity of an object to the telephone device.

Abstract: When a signal is sent from a wireless base station 3-1, a wireless modem 10-1 converts the signal to a signal of a unified transmission form. The switch 11-1 switches the signal to one of wireless transceivers 12-1, 12-2 and the optical transceiver 13-1. The wireless transceiver 12-1 or 12-2 sends the signal to a control station 4 or a wireless base station 3—3 via a wireless circuit 20. The optical transceiver 13-1 converts the signal into an optical signal and sends the optical signal to a wireless base station 3-2 via an optical fiber circuit 30.

Abstract: A device for implementing a multimedia communication dissemination system is disclosed herein. The communication system integrates heterogeneous satellite transmission systems, local area computer networks, and the public telephone system to implement a flexible, high-speed communication system. The preferred communication dissemination system includes a broadcast server for broadcasting an information signal, a mobile base station for receiving the information signal broadcast from the broadcast server, and a local area network for distributing information received by the mobile base station. The preferred mobile base station includes a receiver for receiving information signals transmitted from a broadcast server, a network interface for distributing processed information signals, and a software proxy process for processing information signals. A software proxy process controls the dissemination of information through the network.

Abstract: It comprises a fixed group composed of a loudspeaker (2), microphone (5), screen (3) and keyboard (4), capable of being handled by the user in contiguity to same; transmission means of the communication by means of infrared optical signals, totally free of microwave-emitting functions; measurement means of the overall microwave power and, possibly, a microwave receiver that enables it to receive messages with the connection signal and which has means for establishing direct communication by infrared optical signal with other analogous mobile phones.

Abstract: A driver circuit for generating a driving pulse signal to activate a vibrating element includes a half-bridge circuit formed essentially of first and second switching devices to which drive signals are supplied through a driver interface. A driving voltage is supplied to a source of the first switching device, a drain of the second switching device is grounded, and an output terminal of the half-bridge circuit is connected to the vibrating element. The half-bridge circuit is controlled such that the two switching devices alternately turn ON. When the first switching device is ON, the driving voltage is supplied as the driving pulse signal to the vibrating element, and when the second switching device is ON, the vibrating element and the second switching device together form a low-impedance closed loop. As the switching devices are caused to alternately turn ON at specific intervals, the vibrating element vibrates at a natural resonant frequency, transmitting thereby an ultrasonic signal.

Abstract: Optical communications networks are provided that allow network maintainers to monitor or control subsystems using communications links other than optical telemetry links. The communications links may be wireless links or may be based on any other suitable communications links such as links using Ethernet cables or telephone lines. Network subsystems may be provided that include communications circuitry for communicating over the communications links. A network maintainer may use network control and management software implemented on computer equipment at a different location than the subsystems to communicate with the subsystems over the communications links. Because the communications links may function independently from the optical telemetry channels in the network, new subsystems may be added to the network without disturbing the existing network management software or telemetry arrangement.

Abstract: This application disclosed an apparatus and process for tone frequency signaling. The apparatus comprises a transmitter to transmit a first signal, the first signal comprising a first data signal modulated onto a first carrier tone, a receiver to receive a second signal and monitor a characteristic of the second signal, the second signal comprising a second data signal modulated onto a second carrier tone, and a controller coupled to the transmitter and the receiver to change the frequency of the first carrier tone from a first frequency to a second frequency in response to the monitored characteristic of the second signal.

Abstract: Methods and apparatus for establishing secure wireless links between a handset and a base station in cordless telephone systems are described. A method of generating a secure wireless link between a handset and a base station includes initiating a linking procedure, generating a security code, displaying the security code at the base station, entering the security code into the handset and then establishing a radio frequency link between the handset and the base station utilizing the security code. A cordless telephone system capable of generating a secure wireless link includes both a handset and a base station. The handset includes a control circuit, a transmitter and a receiver coupled to the control circuit along with a keypad also coupled to the control circuit.

Abstract: In an infrared communication module with a function of transmitting a remote control signal including a light-emitting element for a remote control signal and a light-emitting element for infrared communication, the light-emitting element for infrared communication and the light-emitting element for the remote control signal are arranged in a region corresponding to a single lens. In this way, the module can be downsized while having the light-emitting element producing a signal for infrared communication and the light-emitting element producing a remote control signal.

Abstract: A method and system to connect remote antennae and/or remote cellular sectors/sites to cellular base stations. The method and system described herein uses bi-directional optical wireless links, which transfer the information between the base station and the remote site, and vice versa, by single optical signal or several optical signals of different wavelengths. This method and system make it possible to place the antennae remote from the base station.

Abstract: An adapter for use in telephone recording of picking-up electric voice signals from a telephone set and outputting them to a sound recording apparatus, comprising a photocoupler having a light emission device that converts electric voice signals picked-up from the telephone set into optical signals and a photoreceiving device for converting the optical signals again into the electric voice signals and outputting them to the sound recording apparatus incorporated into a package case, whereby the telephone set and the recording apparatus are electrically isolated from each other to prevent intrusion of noises from the recording apparatus to the telephone circuit and eliminate the worry of giving unpleasant feeling to the calling party or the worry that the calling party may suspect the contents of telephone call are under recording.

Abstract: A data communication method, a data transmitting apparatus, a data receiving apparatus, and a data transmission program are provided which do not cause the problem of jitter being generated by a combination of a 1-bit noise shaping A/D converter and on-off keying using infrared rays. In a data transmitting apparatus, analog signals comprising voice or music or signals obtained by digitizing these are converted using a noise shaping method into non-return-to-zero digital signals formed by 1-bit data streams. For converted digital signals of “1”, return-to-zero signals having a pulse width smaller than that of non-return-to-zero signals and that have been allocated a high level are converted into radio signals and transmitted. For converted digital signals of “0”, return-to-zero signals allocated a low level are converted into radio signals and transmitted. A data receiving apparatus receives these radio signals and drives a musical sound output section to output musical sound signals.

Abstract: A paging system includes a private branch exchange telephone system (2) having a number of registered users (7). Each registered user (7) is associated with a unique identification code and, optionally, a cell phone number (5). The priate branch exchange (2), in response to a call to the registered user's extension (EXT1), dialing a call to the cell phone number (5) associated with the registered user (7).

Abstract: The digital protection system for a high voltage electricity network to instruct circuit breakers to open in the event of faults being detected by current and/or voltage sensors on the network lines 4 connected to the circuit breakers. The digital protection system includes an infrared data transmission link with a portable telephone. Transmissions between the digital protection system and the portable telephone uses the wireless application protocol WAP.

Abstract: A free space data transfer system utilizing fibreless optical point to point and omni-directional transmission and reception arrays, and including data processors and organic elements capable of interactive multi-way video and modulated data transfer.

Abstract: Methods and apparatus for establishing secure wireless links between a handset and a base station in cordless telephone systems are described. A method of generating a secure wireless link between a handset and a base station includes initiating a linking procedure, generating a security code, trasmitting the security code from a sound transmitter, receiving the security code at a sound receiver and then establishing a radio frequency link between the handset and the base station utilizing the security code. A cordless telephone system capable of generating a secure wireless link includes both a handset and a base station. The handset includes a control circuit, an rf transmitter and an rf receiver coupled to the control circuit along with a sound receiver also coupled to the control circuit.

Abstract: The present invention is a network system of radio base stations comprising base stations provided in a plurality of cells and a control station controlling the base stations, in which the base stations and the control station are connected by optical fibers using a wavelength multiplexing transmission method, wherein: the base station comprises a variable-wavelength transmitter for transmitting an optical signal having a predetermined wavelength, and an optical coupler for combining optical signals from the variable-wavelength transmitter in order to transmit the optical signals using the wavelength multiplexing transmission method, the control station comprises a plurality of optical receivers for receiving wavelengths of the optical signals transmitted using the wavelength multiplexing transmission method, and an optical coupler for splitting the wavelength-multiplexed optical signals transmitted from the base stations into the optical receivers by wavelength, and when the radio communication terminal comm

Abstract: A network is provided that includes a plurality of antennas coupled over the network to a plurality of base stations. The network can be optical or constructed with RF microwave links. The base stations are configured to provide cellular transmission. A plurality of links couple the plurality of antennas and the plurality of base stations. At least one link of the plurality of links provides multiple transmission paths between at least a portion of the base stations with at least a portion of the antennas. In one implementation, at least one link of the plurality of links is shared by at least two cellular operators on different transmission paths. In another implementation, at least a portion of the plurality of base stations are in a common location and at least a portion of the antennas are geographically disbursed.

Abstract: A method for transferring information within a cellular communications network (20), consisting of transmitting an optical carrier from a first network-element (26A) of the network, modulating the optical carrier (57, 59) with the information, and detecting the modulated optical carrier in an avalanche photo-diode (APD) (150) in a second network-element (24A) of the network so as to recover the information. The method includes altering a gain of the APD responsive to a level of the optical carrier so as to prevent saturation of the APD. Other methods and apparatus are also provided for transferring the information via the optical carrier, and also for using the information transferred.

Abstract: A multicarrier transmitting modem is described.

Abstract: A system, method and apparatus for establishing a secure wireless radio communications link between two devices that minimizes the exposure of sensitive information to third party interception is disclosed. The secure link is established by first establishing an infrared link between the two devices for the exchange of sensitive information, such as encryption information. Subsequent communications would then have the benefit of encryption protection, establishing the secure wireless radio communications link.

Abstract: An information-displaying device includes a portable receiver configured for receiving transmitter-specific information by wireless data transmission in an infrared range, and a plurality of transmitters provided for transmission of the transmitter-specific information, whereby the transmitter-specific information is transmittable from the transmitters by a data transfer between the transmitters and/or a data transfer from a communications unit to the transmitters.

Abstract: An ultrasonic communication system includes an omnidirectional ultrasonic transducer including a housing having a closed side and an open side defining an aperture in the housing. A diaphragm is mounted into the housing to form a sealed cavity between the diaphragm and the closed side of the housing. A second side of the diaphragm is free to transmit ultrasonic signals through the aperture. The diaphragm and aperture both have a largest dimension that is less than or equal to one-quarter wavelength of an ultrasonic signal to be transmitted by the transducer, such that the transducer behaves as a monopole and radiates substantially omnidirectionally.

Abstract: A central control station, which controls radio base stations connected thereto via radio links and optical fiber links, includes a demultiplexing unit which demultiplexes signals supplied from an upper-level station, signal conversion units which convert the respective demultiplexed signals into converted signals having a unified transmission format, and a distribution unit which distributes the converted signals to the radio links and the optical fiber links.

Abstract: The communication system includes a hybride fiber/coax distribution network. A head end provides for downstream transmission of telephony and control data in a first frequency bandwidth over the hybrid fiber/coax distribution network and reception of upstream telephony and control data in a second frequency bandwidth over the hybrid fiber/coax distribution network. The head end includes head end multicarrier modem for modulating at least downstream telephony information on a plurality of orthogonal carriers in the first frequency bandwidth and demodulating at least upstream telephony information modulated on a plurality of orthogonal carriers in the second frequency bandwidth. The head end further includes a controller operatively connected to the head end multicarrier modem for controlling transmission of the downstream telephony information and downstream control data and for controlling receipt of the upstream control data and upstream telephony information.

Abstract: The invention relates to a duplex outdoor base station utilizing a hybrid system of a high amplifier and optic antenna to communicate over both radio and optic frequencies. The base station includes: a RF front end part interfaced with an optic antenna; a receiver interface unit for transmitting the received signal to the RF front end part after amplifying a received signal; a transceiver unit for transmitting the transmitted/received signal to the RF front end part; a base station transceiver subsystem (BTS) test unit, coupled to the front end part, for performing a self-diagnosis of a BTS; and an optic antenna interface unit for connecting an optic antenna system with the receiver interface unit. This base station transceiver subsystem (BTS) is a kind of hybrid system for simultaneously operating an optic antenna and a radio frequency antenna.