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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:
| Patent Number |
Title Of Patent |
Date Issued |
| 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 |
| 5204975 |
Digitally-corrected temperature-compensated crystal oscillator having a correction-suspend control for communications service |
Apr. 20, 1993 |
| 5107522 |
Automatic frequency control circuit |
Apr. 21, 1992 |
| 5081652 |
Offset correction |
Jan. 14, 1992 |
| 4947409 |
Apparatus for correcting frequency in a coherent receiver |
Aug. 7, 1990 |
| 4858159 |
Frequency-tuneable filter calibration |
Aug. 15, 1989 |
| 4691377 |
Automatic frequency and gain control circuit |
Sep. 1, 1987 |
| 4653117 |
Dual conversion FM receiver using phase locked direct conversion IF |
Mar. 24, 1987 |
| 4509205 |
Radio receiver comprising a frequency locked loop with audio frequency feedback, and a muting circuit |
Apr. 2, 1985 |
| 4158174 |
Circuit arrangement for the production of a control signal in a receiving channel which is subject to interference |
Jun. 12, 1979 |
| 3935534 |
Converter-tuner for information transmission system |
Jan. 27, 1976 |
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