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| Number | Title | Issue Date |
| 7580509 | Telephone hook switch using non-contact capacitive sensor and telephone using the same A telephone hook switch in a telephone includes: a capacitive sensor having a capacitance that varies when an object or a part of a human body having a charge contacts or approaches it; and a signal generation circuit for detecting the variation of the capacitance o... | 08/25/2009 |
| 7421246 | Wireless communication device and a method for controlling the same A wireless communication device comprising a search apparatus and a detection apparatus, wherein the search apparatus searches for a peripheral device when the detection apparatus detects that the peripheral device is likely to be utilized by the wireless communicat... | 09/02/2008 |
| 7313686 | Method and apparatus of integrating link layer security into a physical layer transceiver An apparatus for providing link layer security in a Physical Layer Transceiver (PHY) is disclosed. In one embodiment, the apparatus may comprise analog circuitry configured to interface with a data transmission medium, digital circuitry configured to interface with ... | 12/25/2007 |
| 7274212 | Methods and apparatus for control and configuration of programmable logic device Circuitry and methods are provided for control and configuration of a PLD. An embodiment of the invention comprises hard IP circuitry embedded in the PLD. The circuitry may include a gigabit MAC, a hard processor, and a DMA engine. The invention permits a variety of... | 09/25/2007 |
| 7224992 | Four pole stereo headset with push to talk capability in a duplex radio A stereo headset (104) with push-to-talk function can be interfaced with a wireless communication device (102) via a connector interface. The connector interface preferably includes a jack at the wireless communication device (102) and a compati... | 05/29/2007 |
| 6928423 | Copyright management apparatus, copyrighted-work distribution apparatus, and copyrighted-work distribution and receiving system A TV music broadcasting program is distributed from a distribution apparatus through a ground station and a satellite, and a musical-piece program is also distributed through a plurality of audio channels. A subscriber looks for the desired musical piece from a musi... | 08/09/2005 |
| 6925315 | Telephone handset with thumb-operated tactile keypad An improved cell phone arrangement has a centrally located orientation key, for referencing a location tactilely via the user's thumb, and the dialing keys arranged in a substantially circular arrangement around the orientation key, in an array having a relatively l... | 08/02/2005 |
| 6880761 | Method for loading data onto chip cards and devices adapted thereto A method for loading data on chip cards (2) wherein data from a service center (6) are transmitted over a mobile network (4) to a SIM card (1), which is inserted in a mobile device (3) and connected thereto via an interface with co... | 04/19/2005 |
| 6477502 | Method and apparatus for using non-symmetric speech coders to produce non-symmetric links in a wireless communication system A method and apparatus for balancing the forward link capacity of a wireless communication system with the reverse link capacity of the system is presented. Speech coders with selectable modes are implemented in both links so that a forward link speech co... | 11/05/2002 |
| 6223018 | Intra-body information transfer device An information transfer device which transfers a signal via a human body, comprising: a transmitter having a signal source for outputting a time varying signal, a modulator for modulating a signal from the signal source using a carrier frequency of from s... | 04/24/2001 |
| 6154635 | Antenna driving device for transponder An antenna coil (21) for generating a magnetic field (25) to supply power to a transponder (26) is energized through switching devices (23 and 24) connected between Vcc and GND of a D.C. power supply (20) and having contacts S1 and S2 that are actuated in... | 11/28/2000 |
| 6091779 | Process for the wireless transmitting of energy and data In the case of a process for the wireless transmission of energy and data between two parts, preferably the steering wheel and the steering column of a vehicle, having a transformer-type transmitter and consisting of a primary and secondary winding assign... | 07/18/2000 |
| 6031492 | Mobile cradle antenna and heat sink enhancement A cradle unit for use in transmitting radiocommunication signals from within a vehicle between a portable phone unit inside a vehicle and an external antenna connected to an exterior of the vehicle is provided with a heat sink for dissipating heat generat... | 02/29/2000 |
| 5995591 | Connecting arrangement for reducing induced noise A fixed wireless access subscriber unit extension telephone cable connecting arrangement is disclosed. The cable itself includes a single pair of wires for carrying the tip and ring signals between the subscriber unit and an extension telephone set. The c... | 11/30/1999 |
| 5949291 | Cordless telephone with digital frequency adjustment A digitally-controlled frequency synthesizer circuit is provided. The synthesizer circuit has a synthesizer that provides as an output a signal that is based on a reference frequency supplied from a resonator circuit. The reference frequency of the resona... | 09/07/1999 |
| 5940447 | Wireless powered communication device using power signal sampling and method A circuit (34) for data recovery in a wireless powered communication device (10) obviates the need for the costly high power consumption filters of prior art devices by deriving a clock signal from the power coil (18), and then sampling the data coil (20)... | 08/17/1999 |
| 5809429 | Radiating coaxial cable and radio communication system using same A radiating coaxial cable comprises an inner conductor, a layer of cellular foam dielectric material surrounding the inner conductor, and a single, continuous, corrugated outer conductor surrounding the dielectric foam layer in direct contact with it. The... | 09/15/1998 |
| 5625883 | System for wireless information transmission between two different rooms For audio and/or video or control signal transmission between two rooms in, for example, a house, inductive and/or capacitive transmitters and receivers are used which are installed on opposite sides of the partition or wall that separates the rooms. The ... | 04/29/1997 |
| 5329576 | Wireless communication zone management system A wireless communication system comprising a plurality of antennae, the antennae being arranged in a grid pattern over a communication region, wireless portable terminals located within the communication region for emitting and/or receiving electromagneti... | 07/12/1994 |
| 5293400 | Contactless linking device for interconnecting data bus sections The device serves to interconnect first and second sections of a data bus in order to provide a transparent bi-directional data transmission along the bus comprised of the two sections, irrespective of the protocol used. Basically, the device includes a f... | 03/08/1994 |
| 5257290 | Transmission line termination of guide-communications wire for guided vehicles A system for digital communication over a wire lain along the path of guided vehicles to a modem and a loop driver, the modem providing high frequency signals and the loop driver providing low frequency control signals. Instead, the modem and the loop dri... | 10/26/1993 |
| 5247575 | Information distribution system An information distribution system provides information to a user, when the information corresponds to criteria individually selected by the user, and then charges the user only for the selected information thus provided. Encrypted information packages (I... | 09/21/1993 |
| 5230085 | Method and apparatus for wireless electromagnetic communication within a contained electromagnetic field Wireless electromagnetic communication between a primary transceiver and one or more secondary transceivers located within an enclosed structure may be effectuated by forming a multi-conductor electromagnetic transmission line within the structure. Commun... | 07/20/1993 |
| 5115463 | Extended cordless telephone system An extended cordless telephone system for communicating information signals from a plurality of telephone lines through a telephone exchange, including a central station and a plurality of remote units. The plurality of remote units may be radio telephone... | 05/19/1992 |
| 4993060 | Portable device for use by a news reporter A portable device to be carried by a reporter and coupled to a telephone line to a location from which the reporter wishes to transmit a report to a broadcast station to be broadcast live has a casing with a microphone (1) for voice input, a tape input (2... | 02/12/1991 |
| 4918745 | Multi-channel cochlear implant system A method and system is described for electrically stimulating the auditory nerve with multiple channels of audio information. Audio information is transmitted from an external microphone to a speech processor through a single transcutaneous path to an imp... | 04/17/1990 |
| 4908869 | Induction-based assistive listening system A multiple-loop magnetic induction system for improving communication with the hearing-impaired or to people in general who wish to listen privately to speech or music while being in the company of others or at a public location. The invention uses a part... | 03/13/1990 |
| 4866732 | Wireless telephone system A wireless telephone communication system for wireless, voice, data or voice and data terminals comprising apparatus at a central location for receiving one or a plurality of signals for communication with selected ones of wireless communication terminals... | 09/12/1989 |
| 4792965 | Oscillator system for detecting a selected one of a plurality of tuned circuits The system of the present invention allows transmission of information and data across a gap, for example, from the steering wheel of an automobile to the steering column, without any physical connection between the information source and the information ... | 12/20/1988 |
| 4747158 | Cordless communications system A cordless communications system wherein transmission is made and received via magnetic lines of induction comprises a base station and at least one mobile station wherein the base station receives and transmits voice or data signals at different frequenc... | 05/24/1988 |
| 4736452 | Core coupled transmitter/receiver loops for connectorless entertainment systems A method and apparatus for interconnecting passenger entertainment service units to the aircraft system through connectorless inductive couplers. Couplers are arranged along the seat track as desired without limitation on seat spacing or location.... | 04/05/1988 |
| 4697283 | Telephone handset with integrated flux coil A telephone handset having a receiver housing at one end has a flux coil positioned at the front corner at the junction between the peripheral wall and the front wall of the housing. The flux coil is connected in series or in parallel with the receiver. T... | 09/29/1987 |
| 4694292 | Digitized decoder-receiver for receiving call signal A novel method for receiving a numerical call signal which comprises assigning a certain call number to a specified person; transmitting an electromagnetic wave carrying the call number as the number of impulse; receiving the electromagnetic wave with a r... | 09/15/1987 |
| 4602255 | Luggage door unlocking device for vehicle A luggage door unlocking device for a vehicle, capable of unlocking the luggage door of the vehicle without using an unlocking key includes a portable signal transmitter for transmitting an unlocking signal; signal receiving device provided on the vehicle... | 07/22/1986 |
| 4584707 | Cordless communications system A cordless communications system wherein transmission is made and received via magnetic lines of induction comprises a base station and at least one mobile station wherein the base station receives and transmits voice or data signals at different frequenc... | 04/22/1986 |
| 4528677 | Data transmission system A data transmission system including a pair of parallel transmission lines, applies data signals to the transmission lines through a transformer and an associated impedance connected across the lines. The transformer is magnetically coupled to at least on... | 07/09/1985 |
| 4462113 | Cordless transmitting and receiving apparatus A cordless transmitting and receiving apparatus which is capable of providing transmitting and receiving between a key transmitting and receiving apparatus such as a telephone and a portable remote transmitting and receiving apparatus and in which a trans... | 07/24/1984 |
| 4352200 | Wireless aircraft passenger audio entertainment system Audio information in several audio channels is supplied via head sets to passengers seated aboard an aircraft in rows of seats including armrests and being distributed along an elongate passenger section inside a metallic fuselage. According to the subjec... | 09/28/1982 |
| 4301335 | Visual telephone or other annuciator ringing indicator A ribbon of light with a bright spot moving thereacross is generated by a series of sequentially located indicator lamps or LED's, sequentially energized by a ring counter which, in turn, is enabled by a time-based decoding circuit. The time-based decodin... | 11/17/1981 |
| 4117271 | Inductive communication system An apparatus providing multiple conversations over limited range. Pseudo-se modulations and specific address coding permit multiple conversations between a base station and several vehicles or between the vehicles. A variable power source gives even grea... | 09/26/1978 |
