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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: 1955
Last issue date: 05/29/2012


          16            
NumberTitleIssue Date
7197016Time division protocol for an ad-hoc, peer-to-peer radio network having coordinating channel access to shared parallel data channels with separate reservation channel
A novel protocol for an ad-hoc, peer-to-peer radio network that provides collision-free channel access with an emphasis on improving geographic reuse of the frequency spectrum. The protocol of the invention is executed on the reservation or control channel, and prov...
03/27/2007
7196638Embedded digitization system
An embedded digitization system enables a military platform to receive, transmit and process a variety of types of information for a variety of purposes. An apparatus and method provides a means to ensure information interoperability between the invention and extern...
03/27/2007
7194037Active replica transformer hybrid
A communication circuit includes a near end replication transmitter and a hybrid having an input in communication with an output of the near end transmitter. A high pass filter is responsive to the near end replication transmitter. A subtractor subtracts an output o...
03/20/2007
7193738Image processing apparatus and method
The present invention concerns an image processing device that is connectable to a general-purpose bus of a second image processing apparatus that includes a memory. An image dividing device generates divided images by dividing an original image, and stores the divi...
03/20/2007
7194010Wireless base station to base station synchronization in a communication system, such as a system employing a short range frequency hopping or time division duplex scheme
In a network, a method is disclosed for wirelessly exchanging communications with at least one mobile unit. The network includes first and second base stations units coupled to the network, and may include a system controller. The method includes: receiving a commun...
03/20/2007
7190718Method and apparatus for determining a receiver sampling phase for use in diagnosing a channel
An apparatus for processing a received signal includes an analog-to-digital converter (ADC) configured to produce a sampled signal from a received signal using a candidate sampling phase. An adaptive filter includes adaptive filter coefficients and is configured to ...
03/13/2007
7190714Peripheral device receiver detection in a high noise environment
A receiver detector of a peripheral device for use in a computer system to detect whether a receiver is electrically coupled to a data port of the peripheral device includes a modulator, a high pass filter, and a demodulator. The modulator is configured to modulate ...
03/13/2007
7190360Display device and method of driving the same
The present invention is intended to achieve an improvement in the horizontal resolution of an active matrix semiconductor display device. In accordance with the present invention, by supplying a modulated clock signal obtained by frequency modulating a reference cl...
03/13/2007
7190980Method and system for power control in wireless portable devices using wireless channel characteristics
A method controls the operation of devices which communicate over a wireless communications channel. The method includes determining a parameter of a received signal communicated over the wireless communications channel and determining a minimum threshold value of t...
03/13/2007
7190728Digital data transmitter, transmission line encoding method, and decoding method
A digital data transmission apparatus includes a transmitting end (100) that includes: a binary/quadrary conversion unit (110) for converting a data stream; a coding unit (120) for mapping the converted data to be coded; a digital filter (130...
03/13/2007
7190672System and method for using destination-directed spreading codes in a multi-channel metropolitan area wireless communications network
A system and method for enabling a node in a mobile wireless ad-hoc communications network to use a particular spreading code to spread a message to be transmitted to a destination node without having to provide information on the spreading code to the destination n...
03/13/2007
7191262High-throughput UART interfaces
A modified universal asynchronous receiver transmitter (UART) device is provided with an auxiliary high speed parallel channel using supplementary FIFO buffers for the exchange of data. The auxiliary parallel channel is separate from the normal lower speed serial ch...
03/13/2007
7187314System for reducing amplitude digital-to-analog converter (DAC) resolution in a polar transmitter
A system for reducing digital-to-analog converter (DAC) resolution for an amplitude modulated signal comprises a first logic configured to determine a desired DAC output voltage range, a second logic configured to select a DAC reference voltage level corresponding t...
03/06/2007
7187916Method and system for measuring receiver mixer IQ mismatch
Aspects for measuring receiver mixer IQ mismatch in a transceiver are described. The measuring includes providing a training signal for a receiver mixer, the training signal having periodic, uncorrelated I and Q signals. A phase mismatch in the receiver mixer is det...
03/06/2007
7187717Process for modulation and determination of the bit loading on a transmission channel
A modulation process for a digital transmission system having an error correcting code and determination of the number of bits to load on a transmission channel. The process judiciously associates a coder for introducing redundancy to the binary information, an inte...
03/06/2007
7187720Noiseless data transmission method
The method of noise-immune information transmission of the present invention permits to increase the communication channel capacity without reducing the noise immunity of information being transmitted. In this method, informational digital samples are transmitted in...
03/06/2007
7187710Low power pulse signaling
A system for communicating between integrated circuits is disclosed. The system includes a driver having an input and an output. In response to a logic transition from a first logic state to a second logic state at the driver input, the driver output transitions fro...
03/06/2007
7187709High speed configurable transceiver architecture
One or more configurable transceivers can be fabricated on an integrated circuit. The transceivers contain various components having options that can be configured by turning configuration memory cells on or off. The integrated circuit may also contain programmable ...
03/06/2007
7187141Methods and apparatus for illumination of liquids
Methods and apparatus for illumination of liquids in a variety of environments. In one example, multi-color LED-based light sources are employed to achieve a wide range of enhanced lighting effects in liquids. In another example, a pool or spa is illuminated by one ...
03/06/2007
7187924Intelligent data network with power management capabilities
In one embodiment, a method for implementing two-way communication between at least first and second devices comprises steps of: (a1) during finite time periods following transmission of respective first messages from the first device to the second device, us...
03/06/2007
7187712Efficient framing of overhead channel for ADSL modems
An efficient framing scheme is described for the transmission of frame overhead data in next generation ADSL modems. As a result of this new framing scheme, the available data rate for the transmission of payload data increases. High payload data rates and consequen...
03/06/2007
7184714Frequency domain estimation of IQ imbalance in a wireless OFDM direct conversion receiver using loopback connection
An OFDM transceiver has a transmitter, a receiver, and a loopback switch. The loopback switch configured is for selectively establishing a physical connection between an output terminal of the transmitter and an input terminal of the receiver. The transmitter is con...
02/27/2007
7184729Digital automatic gain control for transceiver devices
An automatic gain controller for transceiver elements uses a digital topology to achieve an efficient and rapid gain settling so that an output signal of the variable gain section is within a predefined range. In one embodiment, an input signal is periodically sampl...
02/27/2007
7184466Radio frequency data conveyance system including configurable integrated circuits
A data conveyance integrated system that can be utilized in a base station and/or end user devices in a wireless communication system. The integrated system includes first and second integrated circuits (ICs). The first IC includes a first serial-deserial (SERDES) m...
02/27/2007
7184485Time-domain windowing of multi-band OFDM system to enable spectral sculpting
A method of wirelessly communicating is disclosed. The method comprises generating a plurality of tones for a wideband orthogonal frequency division multiplex symbol (310), the tones including a plurality of contiguous zero-valued tones, inverse Fourier trans...
02/27/2007
7184468Method and system for implementing a conditional one's complement of partial address
Provided is a system and method for a modem including one or more processing paths. Also included is a number of interconnected modules sequentially arrayed along the one or more paths. Each module is configured to (i) process signals passed along the paths in accor...
02/27/2007
7184505Data synchronizing signal detecting device
A data sync signal detecting device for detecting a sync signal having sync signal detection errors. The detecting device applies the output data of a most-likelihood decoder to shift register bit cells. The data is sequentially shifted and held in the bit cells of ...
02/27/2007
7184432Switch fabric architecture and techniques for implementing rapid hitless switchover
A switch is provided that receives user information through a plurality of framer circuits, which group the user information into frames. The frames are fed to a switch fabric including an array of switch elements, each having a switch matrix for routing each frame ...
02/27/2007
7184467Method to mitigate effects of ISDN off/on transitions in ADSL
The present invention provides for a method and apparatus for allocating data to subchannels used for ADSL transmission over a communication link which supports further system transmissions. An expected interference impact from the further system transmissions is es...
02/27/2007
7184737Image-rejection I/Q demodulators
In a communications receiver for quadrature demodulation, a feedback technique for reducing the image response of the receiver. The communications receiver includes an I demodulator and a Q demodulator. A local oscillator (LO) signal is provided by a PLL to a quadra...
02/27/2007
7183837Charge pump circuit with latch-up prevention
In an embodiment of the invention, a charge pump circuit has a latch-up prevention circuit. The latch-up prevention circuit has a depletion P-channel MOS transistor and a resistor serially connected with each other between a negative output terminal and a ground ter...
02/27/2007
7184013Semiconductor circuit in which power consumption is reduced and semiconductor circuit system using the same
A semiconductor circuit system includes a first signal line and n circuit sections (n is an integer equal to or more than 2), each of which has an input terminal and an output terminal. The input terminals of predetermined k ones (k is an integer satisfying 2≦k
02/27/2007
7184773Spatial path control in radio communication system
In an MIMO mobile communication system in which a PDM base station communicates with a single terminal through a plurality of paths the terminal and the base station each collectively transmit control message for a plurality of paths through a path best in communica...
02/27/2007
7183989Transportable rolling radar platform and system
A transportable platform for a rolling radar array system has a base whereupon a track for an array wheel is provided. A segment of the track can be folded for transportation and deployed when the rolling radar array system is to be in an operational mode. The trans...
02/27/2007
7185134Apparatus for managing Ethernet physical layer registers using external bus interface and method thereof
An apparatus for managing Ethernet physical layer registers and a method thereof are provided. The apparatus comprises a central processing unit (CPU) with an external bus interface function, and an interface conversion unit which is connected to the CPU through the...
02/27/2007
7181214System and method for determining the measure of mobility of a subscriber device in an ad-hoc wireless network with fixed wireless routers and wide area network (WAN) access points
A system and method for determining the mobility of a node in a network, such as a wireless ad-hoc network that requires the node to share its information with other mobile and stationary nodes, such as fixed wireless routers and intelligent access points, so that t...
02/20/2007
7178737Combination-type IC card
A combination-type IC card is provided with both of (i) a contact-type interface for reading and writing data via contact-type communication terminals provided in a card, and (ii) a non-contact-type communication interface, which includes a non-contact-type communic...
02/20/2007
7180934Radio communicating apparatus, radio communicating method, and recording medium
A library is referred to and thus facilities are executed when executing an application program for receiving and transmitting radio signals. That is, the library serving as programs depending on hardware converts commands based on the application program into signa...
02/20/2007
7180950Low-noise feedback cancellation filter for enhanced common-mode rejection and noise immunity
A circuit is connected between a module and a pair of wires. The circuit includes a first connection line, a second connection line, radio frequency termination circuitry, a first transformer, a second transformer, a tapped inductance and a feedback cancellation fil...
02/20/2007
7178992Apparatus and method of signal detection in an optical transceiver
The present invention includes an optical transceiver having a fiber module with an optical data input and an electrical data output. The fiber module further includes a signal detect output that indicates the receipt of valid optical data. A physical layer device h...
02/20/2007
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