Matches 1 - 36 out of 36


Match Document Document Title
US20050101262 System and method for providing background music  
A system for providing background music (BGM) in a communication state. A sound provider stores BGM and BGM list information. Upon receiving BGM list information, the sound provider detects BGM...
US20170019129 Method and Arrangement for Transmitting and Receiving RF Signals Through Various Radio Interfaces of Communication Systems  
A method and arrangement for transmitting and receiving RF signals, associated with different radio interfaces of communication systems, employ a direct conversion based transceiver which...
US20070149143 Local oscillation frequency generation apparatus and wireless transceiver having the same  
A multiple local oscillation frequency generation apparatus which can generate local oscillation frequencies in at least two frequency bands and a wireless transceiver having the multiple local...
US20060286939 Local signal generation circuit  
The present invention relates to miniaturization of a local signal generation circuit to supply signals to a frequency converter in communication terminals such as a transmitter, a receiver, a...
US20060035599 Frequency synthesizer and multi-band radio apparatus using said frequency synthesizer  
There is disclosed a frequency synthesizer having an HF synthesizer for generating a first reference frequency signal having a variable frequency in a high-frequency band as a unit synthesizer, an...
US20070099582 METHOD AND APPARATUS FOR SIGNAL DEMODULATION AND TRANSMISSION  
A transceiver comprises a transmitter and a receiver, Dual-band radio signals are simultaneously supported by the transceiver. First and second RF signals are down converted to an intermediate...
US20050090208 General radio frequency synthesizer (GRFS)  
The present invention provides cost-effective synthesizer and transceiver architecture having an instant channel switching for multiple wireless/wire network communication standards such as...
US20090036064 DIGITAL INTEGRATED TRANSMITTER BASED ON FOUR-PATH PHASE MODULATION  
Briefly, in accordance with one or more embodiments, a transmitter comprises four phase modulators to provide four path phase modulation. The phase modulators modulate local oscillator signals...
US20090237218 WIRELESS COMMUNICATION DEVICE  
Embodiments relate to a wireless communication device. The embodiment provides a wireless communication device comprising: a reception signal processor demodulating a received signal; a first...
US20060223455 System and method for wireless communication using low-pulling digital interface signals  
The digital interface between the baseband section and the RF transceiver section of a wireless communication device may cause undesired pulling to an impedance sensitive portion of the RF...
US20070105513 Radio reception device for receiving both terrestrial and satellite digital broadcasting  
A radio reception device for receiving both terrestrial and satellite digital broadcasting. The device includes a reception device for a first radio communication method and a reception device for...
US20070087716 Wireless communication system  
A wireless communication system, which is provided with a PLL circuit having a plurality of oscillators and is capable of processing two or more transmit and receive signal different in frequency...
US20080096490 SEMICONDUCTOR INTEGRATED CIRCUIT FOR RF COMMUNICATIONS  
An AFC-control D/A converter which controls a reference frequency oscillator is a voltage-potentiometer-type D/A converter containing three voltage followers. At least in the latter-stage voltage...
US20120142283 WIRELESS COMMUNICATION APPARATUS  
A wireless communication apparatus using a frequency signal produced by a frequency synthesizer operates at a reduced power consumption and includes a reception portion comprising a first mixer...
US20060234649 Mobile communication device  
It is an object of the present invention to accomplish a frequency synthesizer portion capable of simultaneous operations for transmission and reception with a simple configuration. A mobile...
US20080146165 DYNAMIC FREQUENCY SYNTHESIZER PROGRAMMING  
A system (100) and method (200) for dynamic frequency synthesizer programming is provided The method can include identifying (202) a first operating frequency (120) of a first oscillator (250),...
US20140134961 Common Local Oscillator For Multiple Transceivers  
The specification and drawings present a new apparatus and method for using a common local oscillator for multiple transceivers (e.g., in a BST unit). One or two shared local oscillators...
US20120064839 FULLY INTEGRATED RADIO TRANSMITTER, RADIO COMMUNICATION DEVICE, AND METHOD OF TRANSMITTING RADIO SIGNAL  
A transmitter includes an input unit, a transmission phase locked loop PLL, a local PLL, and a synthesis unit. The input unit is configured to generate a division control signal based on an input...
US20070178848 Generation of wideband frequencies in integrated frequency synthesizer  
An automatic frequency controller (AFC) is integrated within an one-chip transceiver for controlling both a receiver oscillator and a transmission oscillator. The AFC inputs at least one mode...
US20090081961 METHOD AND SYSTEM FOR INJECTION LOCKING AN OSCILLATOR VIA FREQUENCY MULTIPLICATION OF A MULTIPHASE SIGNAL  
Aspects of a method and system for injection locking an oscillator via frequency multiplication of a multi-phase signal are provided. A plurality of signals, each of which may be a phase shifted...
US20050277397 Frequency generator  
A frequency generator according to the invention includes a controllable oscillator comprising a control input and an oscillator output, wherein the controllable oscillator is formed to output, at...
US20070298833 Method and System for Frequency Conversion for Bluetooth and FM  
Methods and systems frequency conversion for Bluetooth and FM radio are provided. FM data may be received and/or transmitted via the FM radio and Bluetooth data may be received and/or transmitted...
US20070254600 PLL CIRCUIT, METHOD FOR PREVENTING INTERFERENCE BETWEEN PLL CIRCUITS, AND OPTICAL DISK APPARATUS COMPRISING THE PLL CIRCUIT  
Interference between each other PLL circuits is suppressed. Detector 30 detects whether or not the difference between output signal frequency of PLL circuit 20 having frequency of an input signal...
US20110034132 Systems and Methods for Minimizing Electromagnetic Interface  
Systems and methods for minimizing electromagnetic interference are provided. A representative electronic device includes a frequency generator that generates clock signals and a computing device...
US20080102761 System and method for compensation of phase hits  
A frequency synthesizer module with phase hits compensation, comprises an enclosure; a frequency synthesizer within the enclosure; and a heater module including a heater element in thermal...
US20090098834 FREQUENCY SYNTHESIZER, RADIO COMMUNICATION SYSTEM, AND SEMICONDUCTOR DEVICE  
In transmission frequency modulation in radio communication, correspondences to multiple-value frequency modulation having plural-bits transmission data are realized while suppressing an increase...
US20070077905 QUADRATURE VOLTAGE CONTROLLED OSCILLATOR  
In a quadrature voltage controlled oscillator, a first oscillator includes a first resonant circuit for generating a preset first resonant frequency and a first pair of cross-coupled transistors...
US20060252396 Phase generator using polyphase architecture  
A phase generator includes at least one input port for accepting a reference signal having a frequency, a plurality of n output ports, n>4, and a network of phase-shifting elements coupled in a...
US20070060070 Wireless communication system and method using digital calibration to control mixer input swing  
A wireless communication device is disclosed wherein the voltage swing of a local oscillator (LO) signal is controlled to prevent overstressing semiconductor devices in a mixer to which the LO...
US20080274704 Rf Transceiver and a Method of Operation Therein  
A RF transceiver and method of operating a transceiver are provided. The transceiver has a frequency synthesizer that generates a stable, operational frequency signal, a reference VCO that...
US20060217077 Radio frequency device with null or quasi-null intermediate frequency minimizing interfering frequency modulation applied to an integrated local oscillator  
A frequency transposition device is connected to a local main oscillator. The main oscillator is incorporated inside a main phase locked loop whereof the reference frequency is supplied by a...
US20060148421 Method and apparatus for frequency adjustment  
A method and an apparatus for shifting a resonance frequency in response to an operating frequency are provided. The present invention retrieves a control signal, from a frequency synthesizer,...
US20060141942 Wireless stereo synchronizaing transceiver  
A wireless stereo synchronizing transceiver is disclosed to include a receiving processing unit having a mixer circuit, a transmitting processing unit, which has a stereo modulating mixing circuit...
US20070238434 Clock modulation circuits with time averaging  
Embodiments of clock modulation circuits with time averaging are described herein.
US20050266816 PLL synthesizer  
A phase detection circuit generates a phase error signal indicating the phase difference between a reference signal and a frequency division signal output from a frequency divider. A charging pump...
US20090098833 OPTICAL MODULE  
A first frequency generator outputs a signal at first frequency f1 which satisfies a relationship of f1>f0 with desired frequency f0. A second frequency generator outputs a signal at second...

Matches 1 - 36 out of 36