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Class Information
Number: 455/256
Name: Telecommunications > Receiver or analog modulated signal frequency converter > Local control of receiver operation > Local oscillator frequency control > Combined with other control
Description: Subject matter including significantly claimed details of frequency control means (as defined in subclass 255) combined with other control means (e.g., tone control, selectivity control) or other broadly included control means which may be included by the name only (e.g., volume control).










Patents under this class:
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Patent Number Title Of Patent Date Issued
8712359 Communication device and method for detecting a radio signal Apr. 29, 2014
8712360 System and transceiver clocking to minimize required number of reference sources in multi-function cellular applications including GPS Apr. 29, 2014
8706069 Integrated receivers and integrated circuit having integrated inductors Apr. 22, 2014
8687645 Wireless communications device providing temperature-compensated clock correction features and related methods Apr. 1, 2014
8682273 RF digital spur reduction Mar. 25, 2014
8649749 RF receiver with voltage sampling Feb. 11, 2014
8565196 Simultaneous use of multiple phone numbers in mobile device by sharing hardware Oct. 22, 2013
8532600 System and transceiver clocking to minimize required number of reference sources in multi-function cellular applications including GPS Sep. 10, 2013
8514989 Method circuit and system for adapting a receiver receive chain based on detected background noise Aug. 20, 2013
8494470 Integrated receivers and integrated circuit having integrated inductors Jul. 23, 2013
8483332 Oscillating apparatus, receiving apparatus, and oscillation control method Jul. 9, 2013
8463212 Receiving apparatus, imaging apparatus, and receiving method Jun. 11, 2013
8355688 Method and system for frequency selection using microstrip transceivers for high-speed applications Jan. 15, 2013
8301098 System and transceiver clocking to minimize required number of reference sources in multi-function cellular applications including GPS Oct. 30, 2012
8280330 Crystal-less clock generation for radio frequency receivers Oct. 2, 2012
8233898 Wireless communications device providing temperature-compensated clock correction features and related methods Jul. 31, 2012
8199027 Systems and methods for utility meter reading Jun. 12, 2012
8145170 Low-cost receiver using tracking bandpass filter and lowpass filter Mar. 27, 2012
8131242 System and method for implementing a swap function for an IQ generator Mar. 6, 2012
8107913 Method and apparatus for a digital regulated local oscillation (LO) buffer in radio frequency circuits Jan. 31, 2012
8014477 Receiver employing selectable A/D sample clock frequency Sep. 6, 2011
7991359 Receiver, transceiver circuit, signal transmission method, and signal transmission system Aug. 2, 2011
7961056 Low phase noise voltage controlled oscillator Jun. 14, 2011
7848709 Multi-mode crystal oscillator Dec. 7, 2010
7683829 Method and apparatus for adapting a receiver frequency plan according to location Mar. 23, 2010
7653370 Offset signal phasing for a multiple frequency source system Jan. 26, 2010
7555273 Bandpass filter with carrier frequency reduction Jun. 30, 2009
7386289 Microwireless integrated environmental sensor and transmitter system Jun. 10, 2008
7356312 Fractional frequency synthesizer Apr. 8, 2008
7321755 Dual-mode clock for improved power management in a wireless device Jan. 22, 2008
7218179 Methods and apparatus for calibrating gm-Z May. 15, 2007
7215936 Super-regenerative receiver including phase-locked loop May. 8, 2007
7133647 Chiprate correction in digital transceivers Nov. 7, 2006
6975839 Apparatus, and associated method, for estimating frequency offset using filtered, down-sampled likelihood polynomials Dec. 13, 2005
6946917 Generating an oscillating signal according to a control current Sep. 20, 2005
6928275 Method and apparatus for compensating local oscillator frequency error Aug. 9, 2005
6748199 Portable telephone apparatus and stablly supplying method of reference frequency Jun. 8, 2004
6522871 Method and apparatus for compensating local oscillator frequency error through environmental control Feb. 18, 2003
6324228 Method and apparatus for robust frequency tracking in strong channel interference using carrier signal relative strength and frequency error Nov. 27, 2001
6278867 Methods and systems for frequency generation for wireless devices Aug. 21, 2001
6243597 Battery-operated communications device with the continuously running reference clock of which the frequency is reduced when a synchronization unit is controlled during a stand-by mode Jun. 5, 2001
6194975 Dual band VCO with improved phase noise Feb. 27, 2001
RE36973 Digitally-corrected temperature-compensated crystal oscillator having a correction-suspend control for communications service Nov. 28, 2000
6112068 Phase-locked loop circuit with switchable outputs for multiple loop filters Aug. 29, 2000
5936480 Selective loading for sideband noise ratio reduction of a voltage controlled oscillator Aug. 10, 1999
5864749 Telecommunication terminal Jan. 26, 1999
5696797 Demodulator with baseband doppler shift compensation and method Dec. 9, 1997
5448755 Oscillation scheme for a selective calling reception apparatus Sep. 5, 1995
5289506 Automatic frequency control circuit Feb. 22, 1994
5241700 Receiver of an electromagnetic signal with a known nominal frequency, liable to be affected by an unknown variation, in particular by the Doppler shift Aug. 31, 1993

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