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Class 375/219 - TRANSCEIVERS


Subclass of Class 375 - Pulse or digital communications
Definition: Subject matter in which a transmitter and a receiver are
No. of patents: 1934
Last issue date: 02/14/2012


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NumberTitleIssue Date
7333532Adaptive code-tracking receiver for direct-sequence code-division multiple access (CDMA) communications over multipath fading channels and method for signal processing in a rake receiver
In one embodiment, a rake receiver for a spread-spectrum (SS) signal has a plurality of rake fingers corresponding to different multipath components of the SS signal and sampling circuitry generating a stream of samples corresponding to the SS signal. A first rake f...
02/19/2008
7333805Method for monitoring the transmission quality in a cellular radio communication system
In a cellular radio communication system that supports in each of its cells a plurality of different codec modes for the purpose of radio transmission, the terminals working in a cell and a base station of the cell refer to the information relating to the use of cod...
02/19/2008
7333824Method and apparatus for supporting P2P communication in TDD CDMA communication systems
A method performed by a network system is provided for canceling interference signals brought by introducing P2P communication in wireless communication systems, comprising: receiving a call request from a user equipment in a cell for communicating in UP-BASE STATIO...
02/19/2008
7333423Transceiver with calibrated I and Q paths and methods for deconvolved calibration
Phase and amplitude offsets of a multicarrier transceiver may be reduced by measuring receiver amplitude and phase mismatches of receiver radio-frequency (RF) circuitry by performing a fast Fourier transform (FFT) on a receiver calibration signal. ...
02/19/2008
7330489Distributed data synchronization apparatus and method
Disclosed is a method and apparatus for synchronizing data in a number of separate integrated circuits. In one embodiment, the apparatus includes a first integrated circuit configured to receive first data, and a second integrated circuit coupled to the first integr...
02/12/2008
7330500Adjustable electronic duplexer
A duplexer for a communication device having a transmission unit, a reception unit and a shared antenna is disclosed. The duplexer comprises a first signal path between the transmission unit and the reception unit, the first signal path comprises a filter unit filte...
02/12/2008
7330501Orthogonal normalization for a radio frequency integrated circuit
A radio frequency integrated circuit includes a transmitter section, and a receiver section. The receiver section includes a low noise amplifier, down conversion module, an orthogonal-normalizing module, and a baseband processor. The low noise amplifier is operably ...
02/12/2008
7330502Input/output circuit and semiconductor integrated circuit
An input/output circuit includes a reference clock generator configured to generate a reference clock. A signal transmitter is configured to transmit serial data in synchronization with one of the reference clock and a test clock. A signal-receiving circuit is confi...
02/12/2008
7330795Method and apparatus for providing signal analysis of a BioNEMS resonator or transducer
An outputs signal, v(t), is generated from a bioNEMs transducer and mixed with a reference signal and then filtered to generate a correlator output, r(t). The correlator output is detected to generate a signal u(t) and then determined whether the signal u(t) satisfi...
02/12/2008
7330512System and method for the data transmission of digital transmission data
The invention relates to a system for the data transmission of digital transmission data (17, 18) between a first digital protective device (1) and a second digital protective device (9) on a section (A) of an energy supply line (2) in a ...
02/12/2008
7327802Method and apparatus for canceling the transmitted signal in a homodyne duplex transceiver
An apparatus comprises a transmitter, a receiver, an antenna and a signal cancellation circuit. The transmitter is configured to send a transmitter signal associated with a frequency. The receiver is associated with the frequency. The antenna is coupled to the trans...
02/05/2008
7327718Data multiplexing method and data multiplexer, and data transmitting method and data transmitter
An effective data multiplexing method wherein an error correction ability is exerted at the maximum so that data transmission quality is improved and a data transmitting method in which an interleaving process applicable to data transmission using interpolation pilo...
02/05/2008
7328025Method for implicit allocation of resources
A method for dynamic allocation of transmission resources to a plurality of communications between a base station and a plurality of mobile terminals includes generating a pseudo-random sequence and performing an allocation. Each resource includes a plurality of pos...
02/05/2008
7328037Method and apparatus to control transmitter
Briefly, a method to control data transmission rate and transmission power level of a mobile unit is provided. The method may include varying a data transmission rate value based on a difference between a received signal strength and a receiver sensitivity value and...
02/05/2008
7327805Device, apparatus and method for receiving data transmissions having different data rates
A continuously tunable linear phase filter having a ground connection includes a three-terminal Bessel filter having an input terminal for receiving a signal, an output terminal for delivering a signal, a control terminal for receiving a control voltage, and a varac...
02/05/2008
7327988Wireless communications system having reduced noise mode operation capability
A wireless communication system having a terminal unit operates in a reduced noise state during receipt of a wireless transmission from a control unit. The terminal unit includes terminal circuitry, a radio and noise management circuitry. The noise management circui...
02/05/2008
7324475Radio 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
7324739Data reproduction method and data reproduction apparatus
In a data reproduction method and a data reproduction apparatus in the present invention, video data having a frame frequency of 23.97 Hz is recorded on a tape, and in correspondence with this video data, audio data having a sampling frequency of 48 kHz is also reco...
01/29/2008
7324608Efficient subcarrier weighting to enhance receiver performance
A modem system for receiving and transmitting signals having a frequency domain equalizer (FEQ) block being responsive to a frequency channel response for processing the same to generate one or more equalizer coefficients, the modem system is responsive to an input ...
01/29/2008
7321735Optical down-converter using universal frequency translation technology
A method and system for converting an optical signal to electrical information signals, including demodulated baseband information signals and modulated baseband signals at multiple harmonics. In an embodiment, the optical information signal is amplitude modulated w...
01/22/2008
7321615At-command analyzing method
An UART receives asynchronous transmission serial data based on a baud-rate clock from a DTE. An MPU analyzes the data received by the UART. A baud-rate generating portion generates the baud-rate clock to be output to the UART in accordance with instructions from th...
01/22/2008
7321617Data communication system with self-test feature
A data communication system includes circuitry to assure components respond to variations in the time length of the valid data window or “eye” of the high speed data communication signal. A self-test portion of the system periodically injects the effects of phas...
01/22/2008
7321688Image processor for character recognition
In image processing of a document having image data of a document including an image with character images on a background image, the character images and the background image thereof are separated. First, areas in correspondence to the character images from the ima...
01/22/2008
7321613Automatic impedance matching compensation for a serial point to point link
An integrated circuit (IC) device that has an analog front end with an I/O buffer is reset. The I/O buffer has a driver circuit to transmit a stream of information over a serial point to point link, and a receiver circuit to receive a stream of information over the ...
01/22/2008
7321611Method and transceiver for full duplex communication of ultra wideband signals
An impulse radio transceiver for full duplex ultrawide-band communications. The transceiver comprises an impulse radio transmitter that transmits impulse radio signal pulses, an impulse radio receiver that receives impulse radio signal pulses. Either or both of the ...
01/22/2008
7321612Bit stream conditioning circuit having adjustable PLL bandwidth
A high-speed bit stream interface module interfaces a high-speed communication media to a communication Application Specific Integrated Circuit (ASIC) via a Printed Circuit Board (PCB). The high-speed bit stream interface includes a line side interface, a board side...
01/22/2008
7321614Apparatus and methods for communicating using symbol-modulated subcarriers
Apparatus and methods for selecting a transmit power level and subcarrier modulation assignments based on measured channel conditions to achieve a performance level for communications over a symbol-modulated subcarrier communication channel are provided. In some emb...
01/22/2008
7319870Method for subscribing to a wireless service
A method is provided for configuring a subscriber unit for operation in a wireless communications system. Information on available wireless services is advertised through well known, and publicly accessible, broadcast media, for the benefit of potential subscribers....
01/15/2008
7319730Data communication method and data communication device and semiconductor device
The present invention provides a data communication method and a data communication device capable of performing high-speed data communication by using a parallel link and higher-speed data communication by reducing a timing skew. A data communication method include...
01/15/2008
7319712Orthogonal code generation apparatus, scrambling code generation apparatus and portable radio terminal using such apparatus
An orthogonal code generation apparatus can generate a sequence of orthogonal codes without having to prestore orthogonal code sequences in a memory, by applying logic operation on a sequence number and a location number using AND circuits A0, A1
01/15/2008
7319667Communication system with priority data compression
A data compression system that dynamically adapts the degree of compression used in response to the priority of the data to be compressed is provided by virtue of one embodiment of the present invention. In one embodiment, only low priority data is compressed while ...
01/15/2008
7319724Radio equipment using image signals for compensating transmission signals
Disclosed is radio equipment for transmission and reception of Frequency Division Duplex mode signals and transmission signal characteristic compensation utilizing small-scaled circuit construction. A receiver converts Radio Frequency band signals from an antenna sh...
01/15/2008
7317495Mobile telephone and image receiving device with reduced power consumption
In a portable receiving device 1 operable with a battery 18 as power supply and capable of receiving the TV broadcast outdoors, a CPU 13 detects the receiving level of the TV receiving unit 12 at timings set in the timer 24, compar...
01/08/2008
7317764Method of signal transmission to multiple users from a multi-element array
A communication method is provided, in which a data vector u which contains respective signal data destined for each of a plurality of users is transmitted from multiple antennas or other transmitting elements. Prior to transmission, a perturbation vector τl is add...
01/08/2008
7317934Configurable communications modules and methods of making the same
Configurable communications modules and methods of making the same are described. In one aspect, a communications module includes a data channel and a termination impedance controller. The data channel is operable to translate data signals in at least one direction ...
01/08/2008
7315817Sound encoder and sound decoder
An sound encoder accepts a sound signal and then produces a plurality of codes which represent the sound signal on a frame-by-frame basis. The sound encoder determines the order in which the plurality of codes is to be multiplexed into a multiplexed code based on on...
01/01/2008
7315531Method and apparatus for transmitting and receiving variable rate data
A variable rate transmission system transmits a variable rate data packet including an accompanying rate indication signal indicative of the transmission rate of the variable data packet. The data packet can be spread using a long pseudonoise (PN) code, the mask of ...
01/01/2008
7315557Multi-wavelength light source apparatus
A pulse sequence is configured by making a pulse waveform output from a pulse light source into a super Gaussian pulse of the third order or higher, and input to a spectrum expanding device. The spectrum expanding device broadens the spectrum of the pulse sequence w...
01/01/2008
RE39956Communication system
At the transmitter side, carrier waves are modulated according to an input signal for producing relevant signal points in a signal space diagram. The input signal is divided into, two, first and second, data streams. The signal points are divided into signal point g...
12/25/2007
7313178Transceiver for receiving and transmitting data over a network and method for testing the same
The present invention provides a transceiver for receiving and transmitting data over a network, and a method for testing the same. In particular, the present invention provides a physical layer transceiver having a built-in-self-test (BIST) device that allows for, ...
12/25/2007
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