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| Number | Title | Issue Date |
| 7373104 | Signal relay apparatus and method for a wireless network A signal relaying apparatus includes a plurality of devices for relaying signals to and from distant nodes in a wireless communication network. At least one of the devices is an antenna; the devices may also include one or more cables. The devices are connectable to... | 05/13/2008 |
| 7372447 | Microdisplay for portable communication systems The invention relates to a microdisplay system that utilizes a small high resolution active matrix liquid crystal display with an illumination system and a magnifying optical system to provide a hand held communication display device. The system can employ an LED il... | 05/13/2008 |
| 7349469 | DC offset correction for constant modulus equalization A single-axis receiver processes, for example, a complex vestigial sideband (VSB) modulated signal with an equalizer accounting for DC offset within the modulated signal. The DC offset embedded in a received signal may degrade the process of equalization. The equali... | 03/25/2008 |
| 7343015 | Method and apparatus for high fidelity wireless stereophonic transmission utilizing dual frequency carriers A method and system is disclosed for transmitting two related channels of signals through the air. A first channel of signals is modulated with a first carrier frequency, and a second channel of signals is modulated with a second carrier frequency. The modulated fir... | 03/11/2008 |
| 7336732 | Carrier frequency detection for signal acquisition A carrier frequency in a filtered received M-ary phase-shift keyed (MPSK) modulated signal having in-phase and quadrature components is detected by processing the filtered received signal to remove modulation components and thereby generate a test signal at the carr... | 02/26/2008 |
| 7324475 | Radio communication apparatus and method In a radio communication apparatus having a plurality of transmitting and receiving functions that enable simultaneous signal transmission and reception, an arbitrary number of transmitting and receiving functions are assigned to another radio communication apparatu... | 01/29/2008 |
| 7321646 | Methods and apparatus for pre-filtering a signal to increase signal-to-noise ratio and decorrelate noise To receive a signal from a multiple-input-multiple-output (MIMO) communication channel, initial channel taps are generated based on an impulse response estimate of the MIMO communication channel. The received signal is pre-filtered using the initial channel taps to ... | 01/22/2008 |
| 7321354 | Microdisplay for portable communication systems The invention relates to a microdisplay system that utilizes a small high resolution active matrix liquid crystal display with an illumination system and a magnifying optical system to provide a hand held communication display device. The system can employ an LED il... | 01/22/2008 |
| 7319682 | Methods and apparatus for selecting a wireless local area network port and establishing communication therewith A method for wirelessly connecting a workstation, such as a computer, to a local area network includes selecting a LAN with which the workstation is to communicate. A wireless LAN access device that communicates with a processor of the workstation receives signals b... | 01/15/2008 |
| 7310072 | Portable communication display device A head-mounted display system displays information via a matrix display element mounted within a housing that is positioned relative to at least eye of a user. The display is connected to a video or information source such that the user can view information or image... | 12/18/2007 |
| 7301377 | Demodulation apparatus and receiving apparatus A demodulation apparatus that can support various oscillation frequencies. The portable phone device includes a frequency synthesizer for generating a local-oscillation signal having a local oscillation frequency for converting the frequency of an input receiving si... | 11/27/2007 |
| 7299005 | Radio frequency repeater with automated block/channel selection A wireless repeater for receiving, amplifying and transmitting one or more wireless signals. The repeater comprises a signal processing device for determining one or more attributes of a wireless signal received from a mobile device and a memory for storing a refere... | 11/20/2007 |
| 7295517 | Method and apparatus for channel quality metric generation within a packet-based multicarrier modulation communication system A communication system includes a receiver having a variable gain module and a baseband processor. The baseband processor measures the power of the signal received and derives a variable gain control setting that is inversely proportional to the power of that signal... | 11/13/2007 |
| 7266301 | Interference resistant repeater systems including controller units A repeater unit is provided that includes a receiver module and a controller unit. The receiver module is responsive to an infrared signal. The controller unit is adapted to determine whether a signal based on the infrared signal corresponds to a remote control sign... | 09/04/2007 |
| 7242383 | Portable microdisplay system An active matrix color crystal display has an active matrix circuit, a counterelectrode panel and an interposed layer of liquid crystal. The active matrix display is located in a portable microdisplay system that has a display computer that generates images to be di... | 07/10/2007 |
| 7181177 | Channel estimation in a multi carrier transmit diversity system A method and a circuit (44) for estimating channel coefficients in a multi carrier transmit diversity system operating in accordance with a block-coding scheme is described. The method comprises determining from a receive signal (Y) for each channel estimated... | 02/20/2007 |
| 7177591 | Frequency converter and radio communications system employing the same In a frequency converter, a phase-locked loop generates a local-oscillation signal having a low frequency, of a plurality of local-oscillation signals having different frequencies, based on an intermediate frequency beacon signal that results from mixing a predeterm... | 02/13/2007 |
| 7174140 | RF system integrated with RF switch and RF modulation An RF system integrated with an RF switching unit and an RF modulator unit. In accordance with the present invention, it is provided the RF system including a plurality of antenna, an RF unit and a digital tuner and demodulator unit, includes a plurality of RF input... | 02/06/2007 |
| 7136429 | Passive redundant digital data receiver with dual comparator edge detection A passive coupling structure constructed using printed circuit board traces is used to separate the low and high frequency components of an incoming digital signal. The low and high frequency components of the signal are sent to separate receivers on an integrated c... | 11/14/2006 |
| 7133893 | Opportunistic transmission of portably stored digital data The present invention discloses a system and method to provide memory management for electronic devices having limited and/or finite memory resources. The preferred inventive device packetizes the original digital data stored on the device. A communication controlle... | 11/07/2006 |
| 7099383 | Apparatus and associated method for operating upon data signals received at a receiving station of a fixed wireless access communication system Apparatus, and an associated method, for acting upon data signals received at a base station of a fixed wireless access communication system. A plurality of modems are positioned at the base station, and a controller controls to which modem that a data signal, trans... | 08/29/2006 |
| 7068734 | Passive redundant digital data receiver with schmitt-trigger A passive coupling structure constructed using printed circuit board traces is used to separate the low and high frequency components of an incoming digital signal. The low and high frequency components of the signal are sent to separate receivers on an integrated c... | 06/27/2006 |
| 7069049 | Apparatus and method for controlling duplication structure of base station transceiver subsystem in a mobile communication system An apparatus and method for controlling a duplication structure of a Base station Transceiver Subsystem (BTS) is provided. The BTS has N number of sectors including a first sector to an Nth sector and M number of Frequency Assignments (FAs) including a first FA to a... | 06/27/2006 |
| 7031655 | Transmission system and coding communication method for a transmission system The conventional combination cannot realize an efficient road traffic system as a whole. A transmission system has a plurality of modules installed at different positions along a predetermined road. Each of the plurality of the modules includes a receiving section f... | 04/18/2006 |
| 6980823 | Intermediate wake mode to track sleep clock frequency in a wireless communication device Various techniques for improving a wireless communication device are described. The techniques may include reducing power in a wireless communication device for a first sleep period and then increasing power in the wireless communication device for an intermediate w... | 12/27/2005 |
| 6956844 | Facsimile machine having multi-purpose data ports for signal routing and data management A facsimile machine that is capable of receiving, transmitting and storing both document images and data transfers, identifying the appropriate device the data transfer is intended for, and providing the data transfer to the appropriate device is disclosed. A facsim... | 10/18/2005 |
| 6909419 | Portable microdisplay system An active matrix color crystal display has an active matrix circuit, a counterelectrode panel and an interposed layer of liquid crystal. The active matrix display is located in a portable microdisplay system that has a display computer that generates images to be di... | 06/21/2005 |
| 6873823 | Repeater with digital channelizer In order to retransmit a communication channel at a specific frequency, a receiver may receive a signal including the communication channel's specific frequency. An analog to digital converter may generate a digital signal correlated to the received signal and the d... | 03/29/2005 |
| 6865390 | Cellular communications system featuring a central radio pool/traffic router The present invention provides a cellular communication system that includes a central radio pool/traffic router (CRP/TR) that sends control and traffic signals over fiber optic transmission links that connect the CRP/TR with base stations of the cellular communicat... | 03/08/2005 |
| 6823178 | High-speed point-to-point modem-less microwave radio frequency link using direct frequency modulation A point-to-point microwave radio link that operates in a Frequency Division Duplex (FDD) mode using direct digital modulation with a Continuous Phase-Frequency Shift Keyed (CP-FSK) scheme. The transmit signal is generated by a circuit that uses a Voltage-Control Osc... | 11/23/2004 |
| 6745005 | Method and apparatus for reducing signal interference in satellite broadcast systems employing terrestrial repeater stations A method and apparatus for reducing deep fading of signals in satellite-based communications systems employing terrestrial repeater stations by shifting the phase of the signals transmitted from each terrestrial repeater station by a different amount so that the sig... | 06/01/2004 |
| 6243560 | Latency reduction in satellite communication systems The present method for reducing latency in satellite communication includes the steps of applying, at a first earth terminal, a discriminator to user data. The discriminator delineates action data and forward data, thereby forming delineated user data. Th... | 06/05/2001 |
| 6157811 | Cellular/satellite communications system with improved frequency re-use Radiocommunication systems and methods for minimizing co-channel interference are disclosed. The systems and methods are applicable to, for example, landmobile communications, satellite communication systems and hybrids thereof. Signal processing using ma... | 12/05/2000 |
| 6115581 | Apparatus for communication using multiple radio processing modules Apparatus for communication using multiple radio processing modules is disclosed herein. The apparatus for communication mentioned above receives a first radio signal and a second radio signal from a source to acquire a first information and a second info... | 09/05/2000 |
| 6108517 | Methods and apparatus for joint demodulation of adjacent channel signals in digital communications systems Methods and apparatus for receiving adjacent channel signals wherein adjacent channel interference effects are minimized through joint demodulation of the adjacent channel signals. A channel associated with each signal and each corresponding frequency ban... | 08/22/2000 |
| 6078787 | Antenna system An antenna system (100) at a mobile communication station (150) comprises a main unit (101) which comprises at least one network antenna (102), a relay antenna (103) for communication with the mobile station (150) and an interface unit (104) connected to ... | 06/20/2000 |
| 5963847 | Booster system A booster system for transmitting a received wave after amplifying it comprises a receiving antenna section, a carrier combining section, a transmitting section, a transmitting antenna section and a parameter control section. The carrier combining section... | 10/05/1999 |
| 5903592 | Radio transmission system A radio transmission system is provided which includes a master station and a plurality of series connected substations connected to the master station via a radio channel. First receiving unit receives a plurality of modulated waves which have been modul... | 05/11/1999 |
| 5890055 | Method and system for connecting cells and microcells in a wireless communications network A wireless communications system includes a number of clusters of repeaters wherein all repeaters within a cluster arc connected to a common hub via respective millimeter-wave radio links. Wireless signals received by the repeaters from end-user devices a... | 03/30/1999 |
| 5774789 | RF communication signal distribution system and method A system and method for distribution of RF communication signals. First RF communication signals are downconverted in a first signal processing subsystem and transmitted to a second signal processing subsystem via twisted-pair cable. The downconverted fir... | 06/30/1998 |
