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Class Information
Number: 455/255
Name: Telecommunications > Receiver or analog modulated signal frequency converter > Local control of receiver operation > Local oscillator frequency control
Description: Subject matter including one or more local oscillators combined with means to adjust the generated frequency thereof or with a control circuit or loop for controlling the oscillator frequency adjusting means in response to deviation of the generated oscillator frequency from a desired frequency or range of frequencies in such direction and amount as to restore the oscillator frequency to the desired frequency or range of frequencies.










Sub-classes under this class:

Class Number Class Name Patents
455/257 Automatic 94
455/256 Combined with other control 60


Patents under this class:
1 2 3 4 5 6 7 8

Patent Number Title Of Patent Date Issued
8712360 System and transceiver clocking to minimize required number of reference sources in multi-function cellular applications including GPS Apr. 29, 2014
8706052 Portable wideband antenna-radiated signal generator Apr. 22, 2014
8687748 Radio frequency control for communication systems Apr. 1, 2014
8682273 RF digital spur reduction Mar. 25, 2014
8670736 Crystal control scheme to improve performance of a receiver Mar. 11, 2014
8670737 Digital delta Sigma modulator and applications thereof Mar. 11, 2014
8655296 Frequency synthesizer and related method for generating wideband signals Feb. 18, 2014
8649752 Method and system for reducing the complexity of multi-frequency hypothesis testing using an iterative approach Feb. 11, 2014
8644781 Clock generator with frequency error compensation and mobile device using the same Feb. 4, 2014
8630679 Wireless communication unit, baseband module, radio frequency module, wireless terminal and computer program product Jan. 14, 2014
8619997 Receiving apparatus Dec. 31, 2013
8620248 Multichannel receiver system and method for multichannel receiver monitoring Dec. 31, 2013
8615202 Frequency synthesizer Dec. 24, 2013
8606194 Receiver Dec. 10, 2013
8600324 Circuit and method for adjusting a digitally controlled oscillator Dec. 3, 2013
8600327 System and method for frequency translation with harmonic suppression using mixer stages Dec. 3, 2013
8600332 Electronic devices having interferers aligned with receiver filters Dec. 3, 2013
8593991 Method for synchronizing sleeping nodes in a wireless network Nov. 26, 2013
8588720 Signal decimation techniques Nov. 19, 2013
8586461 Systems and methods providing spur avoidance in a direct conversion tuner architecture Nov. 19, 2013
8584959 Power-on sequencing for an RFID tag Nov. 19, 2013
8583170 Multi-band aggregated spectrum receiver employing frequency source reuse Nov. 12, 2013
8577320 Oscillation detector Nov. 5, 2013
8571506 Systems and methods for sharing an oscillator between receivers Oct. 29, 2013
8565692 System and method for providing a versatile RF and analog front-end for wireless and wired networks Oct. 22, 2013
8565704 Method and apparatus for compensating an oscillator in a location-enabled wireless device Oct. 22, 2013
8565705 Oscillator circuit, radio communication device and semiconductor integrated circuit Oct. 22, 2013
8537858 System and method for dynamically swapping master and slave PHYs to allow asymmetry in energy efficient ethernet Sep. 17, 2013
8532600 System and transceiver clocking to minimize required number of reference sources in multi-function cellular applications including GPS Sep. 10, 2013
8532236 Quadrature signal generation in radio-frequency apparatus and associated methods Sep. 10, 2013
8514989 Method circuit and system for adapting a receiver receive chain based on detected background noise Aug. 20, 2013
8514991 Method circuit and system for adapting a receiver receive chain based on detected background noise Aug. 20, 2013
8515361 Frequency correction of a programmable frequency oscillator by propagation delay compensation Aug. 20, 2013
8515373 Apparatus for providing reference signals and associated methods Aug. 20, 2013
8515374 PLL circuit, and radio communication apparatus equipped with same Aug. 20, 2013
8509722 Frequency drift estimation for low cost outdoor unit frequency conversions and system diagnostics Aug. 13, 2013
8509721 Hysteresis nonlinear state machine with overlapping thresholds for automatic frequency control Aug. 13, 2013
8498601 Polar receiver using injection-locking technique Jul. 30, 2013
8489053 Compensation of local oscillator phase jitter Jul. 16, 2013
8483332 Oscillating apparatus, receiving apparatus, and oscillation control method Jul. 9, 2013
8476982 Reference oscillator management for wireless devices having position determination functionality Jul. 2, 2013
8467748 Wireless communication unit, integrated circuit comprising a voltage controlled oscillator and method of operation therefor Jun. 18, 2013
8433255 System and method for reducing temperature-dependent and process-dependent frequency variation of a crystal oscillator circuit Apr. 30, 2013
8417192 Radio frequency (RF) transceiver Apr. 9, 2013
8406707 Systems and methods for implementing a harmonic rejection mixer Mar. 26, 2013
8380156 Mobile wireless communications device having buffered clock distribution network for microprocessor and RF circuits Feb. 19, 2013
8380151 Method and system for reducing the complexity of multi-frequency hypothesis testing using an iterative approach Feb. 19, 2013
8374571 Semiconductor integrated circuit and operating method thereof Feb. 12, 2013
8355688 Method and system for frequency selection using microstrip transceivers for high-speed applications Jan. 15, 2013
8346196 Method and system for coexistence in a multiband, multistandard communication system utilizing a plurality of phase locked loops Jan. 1, 2013

1 2 3 4 5 6 7 8










 
 
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