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Class Information
Number: 455/192.2
Name: Telecommunications > Receiver or analog modulated signal frequency converter > Signal selection based on frequency (e.g., tuning) > With frequency control > Automatic (afc)
Description: Subject matter wherein the control means is a self-regulating control circuit in the receiver which compensates for small variations in a carrier signal frequency to provide a stable audio output.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7606545 |
Portable radio terminal and AFC control method |
Oct. 20, 2009 |
| 7593491 |
Quadrature single-mixer multi-mode radio frequency receiver |
Sep. 22, 2009 |
| 7577219 |
Apparatus for communications |
Aug. 18, 2009 |
| 7570926 |
RF transceiver with compact stacker mixer design for multiple frequency conversion |
Aug. 4, 2009 |
| 7539276 |
Method of processing a sampled spread spectrum signal stream |
May. 26, 2009 |
| 7505738 |
Broadband receiver |
Mar. 17, 2009 |
| 7447483 |
Radio apparatus and a method for reducing interference in a radio apparatus |
Nov. 4, 2008 |
| 7433657 |
Apparatus and method for dynamically clocking a loop filter in a digital communications device |
Oct. 7, 2008 |
| 7424278 |
Low IF mixer with improved selectivity performance |
Sep. 9, 2008 |
| 7336742 |
Frequency error correction device and OFDM receiver with the device |
Feb. 26, 2008 |
| 7333573 |
Radio communication apparatus and method having automatic frequency control function |
Feb. 19, 2008 |
| 7308238 |
Automatic frequency controlling apparatus and method of mobile communication terminal |
Dec. 11, 2007 |
| 7299023 |
Method and apparatus for automatic frequency correction with a frequency error signal generated by block correlation of baseband samples with a known code sequence |
Nov. 20, 2007 |
| 7295822 |
Radio wave receiver, radio-controlled timepiece and tuning capacitance setting method |
Nov. 13, 2007 |
| 7286613 |
Process and device for modulating a carrier with amplitude and phase error compensation |
Oct. 23, 2007 |
| 7272369 |
Method for performing a frequency correction of a wireless device |
Sep. 18, 2007 |
| 7266357 |
Reduced local oscillator feedthrough quadrature image reject mixer |
Sep. 4, 2007 |
| 7263142 |
Apparatus and method for synchronizing symbol timing using timing loop controller |
Aug. 28, 2007 |
| 7254164 |
Method for transconductance linearization for DC-coupled applications |
Aug. 7, 2007 |
| 7236756 |
Tuning signal generator and method thereof |
Jun. 26, 2007 |
| 7233774 |
RF transceiver with compact stacked mixer design for multiple frequency conversion |
Jun. 19, 2007 |
| 7228117 |
Frequency correction method and apparatus for correcting secular change |
Jun. 5, 2007 |
| 7224755 |
Method and apparatus for generating a frequency control signal |
May. 29, 2007 |
| 7221917 |
Adjacent channel interference mitigation for FM digital audio broadcasting receivers |
May. 22, 2007 |
| 7218901 |
Automatic frequency control of multiple channels |
May. 15, 2007 |
| 7212587 |
Apparatus for reducing DC offset in a receiver |
May. 1, 2007 |
| 7206560 |
Chopped intermediate frequency wireless receiver |
Apr. 17, 2007 |
| 7194046 |
Frequency error correction unit and method in a wireless LAN system |
Mar. 20, 2007 |
| 7184725 |
Pole switch down converter with symmetric resonator |
Feb. 27, 2007 |
| 7177602 |
Electronic devices having automatic frequency control systems and methods and computer program products for operating the same |
Feb. 13, 2007 |
| 7170956 |
Frequency agile tuner and variable rate decimator for digital demodulator |
Jan. 30, 2007 |
| 7171181 |
Method for achieving immediate and accurate automatic frequency tuning |
Jan. 30, 2007 |
| 7145970 |
Frequency offset detector for AFC under rayleigh fading |
Dec. 5, 2006 |
| 7123670 |
Fine frequency offset estimation and calculation and use to improve communication system performance |
Oct. 17, 2006 |
| 7116741 |
Compensation of sampling frequency offset and local oscillator frequency offset in a OFDM receiver |
Oct. 3, 2006 |
| 7103332 |
Apparatus and method for compensating for frequency offset in a mobile communication system |
Sep. 5, 2006 |
| 7095993 |
Frequency auto-correction apparatus for CDMA multipath fading channel |
Aug. 22, 2006 |
| 7088974 |
Mobile station capable of performing automatic frequency control based on correspondence of frequency error and TCXO control voltage to base station |
Aug. 8, 2006 |
| 7088955 |
Method and apparatus for acquiring and tracking pilots in a CDMA communication system |
Aug. 8, 2006 |
| 7072631 |
Mobile communication terminal and method of calibrating frequency in the same |
Jul. 4, 2006 |
| 7065163 |
Frequency error estimation using multiple integration lengths |
Jun. 20, 2006 |
| 7062240 |
Automatic frequency control processing in multi-channel receivers |
Jun. 13, 2006 |
| 7058378 |
Method and apparatus for automatic frequency correction of a local oscilator with an error signal derived from an angle value of the conjugate product and sum of block correlator outputs |
Jun. 6, 2006 |
| 7046968 |
Frequency correcting method for cellular phone terminal |
May. 16, 2006 |
| 7043216 |
Portable radio terminal and AFC control method |
May. 9, 2006 |
| 7035605 |
Method and device for automatic control of the frequency of a local oscillator in a DS-CDMA type receiver |
Apr. 25, 2006 |
| 7027787 |
Automatic frequency control system, operation control method thereof and mobile communication device using the same |
Apr. 11, 2006 |
| 7016404 |
Automatic frequency correction for mobile radio receivers |
Mar. 21, 2006 |
| 7002946 |
Frequency discriminator |
Feb. 21, 2006 |
| 6983134 |
Method and apparatus for automatic frequency control and demodulator |
Jan. 3, 2006 |
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