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Class Information
Number: 455/265
Name: Telecommunications > Receiver or analog modulated signal frequency converter > Local control of receiver operation > Local oscillator frequency control > Automatic > With local oscillator synchronization or locking
Description: Subject matter including means whereby a predetermined phase or frequency relationship is maintained between the output of at least one local oscillator and a standard or synchronizing source or wherein the frequency of one or both of two oscillating systems which are coupled together are shifted and automatically held in such a relationship that the two frequencies have the ratio of two integral numbers.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7616935 |
Method and apparatus for matching receiver carrier frequency |
Nov. 10, 2009 |
| 7610030 |
Wireless transmit-only apparatus and method |
Oct. 27, 2009 |
| 7603095 |
Apparatus and method of switching intervals |
Oct. 13, 2009 |
| 7570124 |
Low power frequency division and local oscillator generation |
Aug. 4, 2009 |
| 7539476 |
RF-to-baseband receiver architecture |
May. 26, 2009 |
| 7529531 |
Apparatus and methods for estimating a sleep clock frequency |
May. 5, 2009 |
| 7471940 |
Ratiometric clock systems for integrated receivers and associated methods |
Dec. 30, 2008 |
| 7466968 |
Method and apparatus for providing a local oscillator signal |
Dec. 16, 2008 |
| 7457601 |
Precisely timed execution of a measurement or control action and synchronization of several such actions |
Nov. 25, 2008 |
| 7457589 |
Circuit and method for transmitting a signal |
Nov. 25, 2008 |
| 7389094 |
Wireless data communications using FIFO for synchronization memory |
Jun. 17, 2008 |
| 7373127 |
Digital beam forming for communications systems |
May. 13, 2008 |
| 7359711 |
Methods and apparatus for improving accuracy of radio timing measurements |
Apr. 15, 2008 |
| 7356312 |
Fractional frequency synthesizer |
Apr. 8, 2008 |
| 7327993 |
Low leakage local oscillator system |
Feb. 5, 2008 |
| 7317905 |
Radio-controlled clock and method for gaining time information |
Jan. 8, 2008 |
| 7313380 |
Variable resolution A/D converter |
Dec. 25, 2007 |
| 7313369 |
Communication semiconductor integrated circuit and radio communication system |
Dec. 25, 2007 |
| 7302236 |
Radio communication method and system for performing communication among a plurality of radio communication terminals |
Nov. 27, 2007 |
| 7295824 |
Frequency multiplier pre-stage for fractional-N phase-locked loops |
Nov. 13, 2007 |
| 7280522 |
Method for preparing a profile in W-CDMA communication |
Oct. 9, 2007 |
| 7272373 |
Ratiometric clock systems for integrated receivers and associated methods |
Sep. 18, 2007 |
| 7272374 |
Dynamic selection of local oscillator signal injection for image rejection in integrated receivers |
Sep. 18, 2007 |
| 7251467 |
Telecommunications using a tunable oscillator |
Jul. 31, 2007 |
| 7239857 |
Method and apparatus for compensating an oscillator in a location-enabled wireless device |
Jul. 3, 2007 |
| 7224950 |
Estimating GPS reference frequency drift from PDC-handset VCO-bursts |
May. 29, 2007 |
| 7221916 |
Signal enhancement device for phase lock loop oscillator |
May. 22, 2007 |
| 7218359 |
Digital television receiver and method of recovering incoming digital television signal |
May. 15, 2007 |
| 7203457 |
Tuning system for achieving rapid signal acquisition for a digital satellite receiver |
Apr. 10, 2007 |
| 7194279 |
Adjustment of a phase difference between two signals |
Mar. 20, 2007 |
| 7190939 |
Time division IQ channel direct conversion receiver and method therefor |
Mar. 13, 2007 |
| 7190940 |
Method and system for frequency offset estimation |
Mar. 13, 2007 |
| 7187419 |
Television tuner in which local oscillation signal is prevented from going out of lock in video detection |
Mar. 6, 2007 |
| 7177601 |
Method and apparatus for transceiving data using a bimodal power data link transceiver device |
Feb. 13, 2007 |
| 7177612 |
Frequency generator and communication system using the same |
Feb. 13, 2007 |
| 7167727 |
Wireless data communications using FIFO for synchronization memory |
Jan. 23, 2007 |
| 7164900 |
Impulse waveform generating apparatus |
Jan. 16, 2007 |
| 7155191 |
Method and arrangement for reducing phase jumps when switching between synchronization sources |
Dec. 26, 2006 |
| 7154341 |
Communication semiconductor integrated circuit device and wireless communication system |
Dec. 26, 2006 |
| 7151945 |
Method and apparatus for clock synchronization in a wireless network |
Dec. 19, 2006 |
| 7151915 |
Dual mode voltage controlled oscillator having controllable bias modes and power consumption |
Dec. 19, 2006 |
| 7146143 |
Communication semiconductor integrated circuit device and wireless communication system |
Dec. 5, 2006 |
| 7142818 |
Systems and methods for reducing radio receiver interference from an on-board avionics transmitter |
Nov. 28, 2006 |
| 7116956 |
Power oscillator for control of waveshape and amplitude |
Oct. 3, 2006 |
| 7099642 |
Method and apparatus for matching receiver carrier frequency |
Aug. 29, 2006 |
| 7099643 |
Analog open-loop VCO calibration method |
Aug. 29, 2006 |
| 7076261 |
Synchronization of optical signaling beacons |
Jul. 11, 2006 |
| 7072631 |
Mobile communication terminal and method of calibrating frequency in the same |
Jul. 4, 2006 |
| 7054607 |
Method and apparatus for reducing DC offset in a wireless receiver |
May. 30, 2006 |
| 7050775 |
Method and apparatus for securely enabling a radio communication unit from standby mode |
May. 23, 2006 |
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