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| Number | Title | Issue Date |
| 7603082 | Impedance matching of an electromagnetic transponder reader A terminal for generating an electromagnetic field, including an oscillating circuit capable of receiving a high-frequency A.C. excitation voltage via an amplifier and a directional coupler, the oscillating circuit having at least one element of variable capacitance... | 10/13/2009 |
| 7574172 | System and method to facilitate wireless wide area communication in a welding environment A system and method for wireless communication with a welding system is provided. The system includes a welding system having a WAP client component and a wireless communication component facilitating post second generation mobile communications between the welding ... | 08/11/2009 |
| 7555264 | Bluetooth master selecting method, bluetooth master selecting program and bluetooth apparatus The present invention provides a method for automatically selecting, as a master, an optimum Bluetooth device for the master which can be stably connected to more devices in a Bluetooth network. According to the present invention, each of Bluetooth apparatuses capab... | 06/30/2009 |
| 7551891 | Method for detecting UWB pulse sequences without local pulse generation The invention relates to a method for transmitting at least one sequence of Np pulses over Np time windows, each pulse being enclosed within a predetermined time chip Tc. The method according to the invention includes a signal detection step, in the course of... | 06/23/2009 |
| 7532861 | Connection interface for conveying RF, data, and power between electronic devices An interface enables an RF signal, a DC power signal, and a data signal to be conveyed between two devices over a single RF cable. In an exemplary application of this invention, a steerable antenna system is coupled to a wireless adapter for use in a wireless networ... | 05/12/2009 |
| 7526251 | Communication apparatus and control method thereof A digital camera 210 and a printer 220 mutually determine if each other supports PS mode. If both of them support PS mode, these two apparatuses form a network for PS by themselves and wirelessly communicate with PS mode enabled. If at least one of the... | 04/28/2009 |
| 7526250 | Apparatus, system and method for flip modulation in an impulse radio communications system Apparatuses, systems and methods for transmitting and receiving modulated impulse radio signals. An impulse radio receiver includes a time base, a precision timing generator, a template generator, a delay, first and second correlators, a data detector and a time bas... | 04/28/2009 |
| 7486931 | System and method for reselecting antennas in a cellular mobile communication system using multiple antennas A cellular mobile communication system using multiple antennas reselects a plurality of transmission antennas of base stations connected to a mobile station. The system includes measuring a channel quality parameter used for estimation of channel performance, determ... | 02/03/2009 |
| 7471927 | Packet communication system, packet communication method, base station, mobile station, controller and packet communication program A system is provided in which capacity and satisfaction rate with a quality of service in packet communications performed through a radio link established between a transmitting station and a receiving station is improved by dynamically limiting transmission power o... | 12/30/2008 |
| 7444118 | Electronic communications system In order that an electronic communications system (100) equipped with: [a.1] at least one base station (10), to which [a.2] at least one LC resonant circuit (13, 16) [a.2.1] with at least one antenna unit (16) in the form of a coil, and [... | 10/28/2008 |
| 7440530 | Circuit for and method of optimizing the transmission of data on a communication channel A circuit for optimizing the transmission of data on a communication channel is disclosed. According to one embodiment of the invention, a circuit comprises a transmitter circuit having a programmable output characteristic and being coupled to a transmission media. ... | 10/21/2008 |
| 7440572 | Secure wireless LAN device and associated methods A secure wireless LAN device includes a housing, a wireless transceiver carried by the housing, a medium access controller (MAC) carried by the housing, and a cryptography circuit carried by the housing and connected to the MAC and the wireless transceiver. The cryp... | 10/21/2008 |
| 7430746 | Method for operating a field transmitter A method or system for operating a field transmitter F, in which a application program FA communicates with a field-transmitter s specific software module SW1, SW2, or SW3. The communication is by a defined interface S in order to call standard ... | 09/30/2008 |
| 7424266 | Rectifier circuit and RFID tag A rectifier circuit includes a first MOS transistor, a first capacitor configured to connect between a gate and a source of the first MOS transistor, and a switching circuit configured to supply a bias voltage to the first capacitor in response to a control signal. ... | 09/09/2008 |
| 7412209 | Shifted channel characteristics for mitigating co-channel interference Methods and apparatuses for minimizing co-channel interference in communications systems are disclosed. A method in accordance with the present invention comprises shifting a characteristic of the first signal with respect to a like characteristic of the second sign... | 08/12/2008 |
| 7409224 | Method and apparatus for selection of one data set from among multiple related data sets and beaming the selected data set A method and system of selecting one set of data from among multiple related data sets and beaming the data set from one handheld electronic device to another handheld electronic device. One embodiment discloses a method and system, which uses multiple cards, one fo... | 08/05/2008 |
| 7403750 | Reuse of digital-to-analog converters in a multi-mode transmitter A transmitter for generating modulated signals is shown, wherein in a first-type operating mode, a first digital signal is input into a digital-to-analog converter to obtain a first analog signal that is input into a first-type unit, in which a first-type modulated ... | 07/22/2008 |
| 7398101 | Transmitter power level optimization and error correction technique A master transceiver automatically lowers its transmit power level at intervals until a slave transceiver no longer accurately receives the transmitted data. When the master detects an inaccurate transfer of data, the master incrementally increases the transmit powe... | 07/08/2008 |
| 7392012 | Apparatus and method for receiving signal in a multiple-input multiple-output communication system An apparatus and method for receiving a signal in a MIMO communication system are provided. In the signal receiving method, a first received signal received at each of the receive antennas is equalized in a predetermined first method. Each of the equalized transmit ... | 06/24/2008 |
| 7386275 | Systems and methods for managing out-of-band device connection Systems and methods for managing connection of devices to a wireless network using out-of-band communications. ... | 06/10/2008 |
| 7382324 | Recording/playback apparatus with electric wave transmission A recording/playback apparatus accommodates a recording medium in a cassette shell and performs recording and/or playback with respect to the recording medium cassette provided with a cassette-side antenna connected to an in-cassette memory. The playback apparatus i... | 06/03/2008 |
| 7376390 | Radio control apparatus, mobile communication method, mobile communication program, and mobile communication system A radio control apparatus has a transmission speed control section and a memory section. The transmission speed control section calculates the transmission power of a data signal to be transmitted to a cell phone based on the transmission power of a control signal t... | 05/20/2008 |
| 7376391 | Wireless data transmission between base station and transponder with encoding/decoding parameter adjusted dependent on header symbol duration Data encoded in packets modulated onto a carrier wave is transmitted between a base station and a transponder. Each packet includes a header section containing at least a reference symbol, and a further section such as a data section. In the transponder, the time du... | 05/20/2008 |
| 7373107 | Ultra-wideband wireless backplane A backplane for an electronic data communication system is disclosed. The backplane comprises at least one ultra-wideband transmitter configured to transmit data in the form of a plurality of pulses in a wireless manner and at least one ultra-wideband receiver confi... | 05/13/2008 |
| 7369523 | Data signal demodulation in a communication system A method described evaluates the pilot-to-data power ratio based on the values of the demodulated data at the output of a receiver such as a conventional maximal ratio combiner or an equalizer receiver. Since the data are not scaled to their particular decision grid... | 05/06/2008 |
| 7366908 | Digital watermarking with content dependent keys and autocorrelation properties for synchronization A digital watermark detection method exploits autocorrelation properties of the watermarked signal that enable synchronization of the digital watermark despite temporal or geometric distortion of the host signal. Other watermark methods employ keys, including a key ... | 04/29/2008 |
| 7366462 | Method and apparatus for seamlessly switching reception between multimedia streams in a wireless communication system Techniques to seamlessly switch reception between multimedia programs are described. For “continued decoding”, a wireless device continues to receive, decode, decompress, and (optionally) display a current program, even after a new program has been selected, unt... | 04/29/2008 |
| 7363005 | Load control scheme and process with power control The invention discloses a control scheme for wireless communications networks, including stations communicating with mobiles in downlink mode. The network includes an elementary load calculator designed to compute the load induced by a given mobile on a server stati... | 04/22/2008 |
| 7356308 | Radio communication apparatus and radio communication method, radio communication system, recording medium, and computer program The present invention relates to a radio communication apparatus and a radio communications method, a radio communication system, a recording medium, and a computer program in which a response signal to an inquiry is returned to a master only when instructions to pe... | 04/08/2008 |
| 7356309 | Directional coupler for communication system An improved directional coupler that significantly reduces the signal degradation problems associated with distortion caused by circuit elements used to measure the transmitted power. In a selected embodiment, the directional coupler of the present invention compris... | 04/08/2008 |
| 7353416 | Wireless access point seek mode for wireless access clients A computer system that is configured to wirelessly access a local area network is further configured to search for the availability of wireless access points when the notebook computer is powered-off. A computer user activates this powered-off seek mode by pressing ... | 04/01/2008 |
| 7349380 | System and method for providing an addressing and proxy scheme for facilitating mobility of wireless nodes between wired access points on a core network of a communications network A communications network which is capable of effectively and efficiently handling mobility of wireless user terminals between access point nodes of a packet-switched network with minimal overhead and packet loss, and a method for using the same. The communications n... | 03/25/2008 |
| 7343162 | Wireless communication method, wireless communication apparatus, and wireless communication system In a wireless communication system having a wireless base station, wireless terminal stations belonging to a first group which performs wireless communication while sharing different frequency channels, and wireless terminal stations belonging to a second group whic... | 03/11/2008 |
| 7339955 | TDMA communication method and apparatus using cyclic spreading codes Systems and methods of ultra-wideband communication are provided. In one embodiment, an ultra-wideband communication system divides a stream of data conveying symbols into a plurality of unspread substreams. A common spreading code is generated at the ultra-wideband... | 03/04/2008 |
| 7339959 | Signal transmitter and signal receiver A signal transmitter and a signal receiver comprises a time base compression part (101) for compressing an audio signal on a time base to output the compressed signal as a time base compressed audio signal and a multiplexing part (102) for multiplexing... | 03/04/2008 |
| 7336727 | Generalized m-rank beamformers for MIMO systems using successive quantization The telecommunications system described herein implements a multi-rank beamformer for use in wireless systems equipped with multiple transmit and multiple receive antennas. The multi-rank beamformer uses finite-rate feedback of channel conditions to achieves close t... | 02/26/2008 |
| 7336936 | Radio signal receiving apparatus and radio signal receiving method Herein disclosed is a radio signal receiving apparatus for receiving radio signals each having a base band signal component, comprising: radio signal amplifying means for amplifying the radio signals each having a signal level; base band signal producing means for p... | 02/26/2008 |
| 7327845 | Transmission of encrypted messages between a transmitter and a receiver utilizing a one-time cryptographic pad An apparatus and method is disclosed for establishing a one-time cryptographic pad between a communicating pair, a communicating pair comprising a pair of transmitter-receivers, each of the pair having a plurality of cryptographic devices in common. The communicatin... | 02/05/2008 |
| 7324791 | Low-noise differential bias circuit and differential signal processing apparatus A low-noise differential bias circuit is provided which obtains excellent noise characteristics while ensuring excellent distortion characteristics. A collector of a transistor Q11 is connected to a voltage supply point (Vcc) via a resistor R15. A base... | 01/29/2008 |
| 7325172 | Failsafe RLC reset method for a wireless communication system Embodiments of the present invention relate to a method. The method includes synchronizing a first device and a second device. If the first device and the second device both initiate the synchronizing at substantially the same time, then the first device and/or the ... | 01/29/2008 |