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Class Information
Number: 375/344
Name: Pulse or digital communications > Receivers > Automatic frequency control
Description: Subject matter where a receiver frequency response characteristic is set or adjusted in response to frequency changes in the input signal or charges in the receiver parameters.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 5974098 |
Received signal detector for digital demodulator |
Oct. 26, 1999 |
| 5970105 |
Apparatus and method for efficient wireless communications in the presence of frequency error |
Oct. 19, 1999 |
| 5963600 |
Micro-controller based frequency calibration |
Oct. 5, 1999 |
| 5956376 |
Apparatus for varying a sampling rate in a digital demodulator |
Sep. 21, 1999 |
| 5953379 |
Current-controlled carrier tracking filter for improved spurious signal suppression |
Sep. 14, 1999 |
| 5949794 |
Time symmetrical control signal, and a receiver and transmission system employing the same |
Sep. 7, 1999 |
| 5949830 |
Small wireless radio |
Sep. 7, 1999 |
| 5949832 |
Digital receiver with tunable analog filter and method therefor |
Sep. 7, 1999 |
| 5946358 |
Receiver circuit for a mobile communications system |
Aug. 31, 1999 |
| 5943380 |
Robust phase estimator and recoverer for digital signals affected in particular by phase jitter |
Aug. 24, 1999 |
| 5940450 |
Carrier recovery method and apparatus |
Aug. 17, 1999 |
| 5940744 |
Local frequency correction |
Aug. 17, 1999 |
| 5933059 |
Method and apparatus for controlling frequency synchronization in a radio telephone |
Aug. 3, 1999 |
| 5933200 |
Method for reducing carrier recovery time in high definition television receiver |
Aug. 3, 1999 |
| 5933460 |
Phase detecting method and phase tracking loop circuit for a digital vestigial sideband modulation communication device |
Aug. 3, 1999 |
| 5917864 |
Automatic frequency control circuit |
Jun. 29, 1999 |
| 5913155 |
Broadcasting signal receiving apparatus and pulse counting demodulators |
Jun. 15, 1999 |
| 5905405 |
Quadrature demodulation circuit with carrier control loop |
May. 18, 1999 |
| 5901184 |
Extended range voltage controlled oscillator for frequency synthesis in a satellite receiver |
May. 4, 1999 |
| 5889759 |
OFDM timing and frequency recovery system |
Mar. 30, 1999 |
| 5889824 |
Intermittent receiving apparatus capable of reducing current consumption |
Mar. 30, 1999 |
| 5887031 |
Symbol timing maintainance to enable low duty cycle receiver operation |
Mar. 23, 1999 |
| 5875215 |
Carrier synchronizing unit |
Feb. 23, 1999 |
| 5872812 |
Carrier reproducing circuit including region deciding circuitry |
Feb. 16, 1999 |
| 5872815 |
Apparatus for generating timing signals for a digital television signal receiver |
Feb. 16, 1999 |
| 5870438 |
Fast resynchronization system for high-speed data transmission |
Feb. 9, 1999 |
| 5867542 |
Clock phase detecting circuit and clock regenerating circuit each arranged in receiving unit of multiplex radio equipment |
Feb. 2, 1999 |
| 5857003 |
Digital radio having improved modulation and detection processes |
Jan. 5, 1999 |
| 5857004 |
Digital data receiver |
Jan. 5, 1999 |
| 5852638 |
Method and apparatus for demodulating a symbol using symbol fragmentation, correlation and fourier analysis |
Dec. 22, 1998 |
| 5848104 |
Demodulator of receiver used for communications |
Dec. 8, 1998 |
| 5844948 |
System and method for digital tracking and compensation of frequency offset error in a satellite receiver |
Dec. 1, 1998 |
| 5841814 |
Sampling system for radio frequency receiver |
Nov. 24, 1998 |
| 5838737 |
Method and apparatus for estimating PSK modulated signals |
Nov. 17, 1998 |
| 5838741 |
Communication device and method for reducing effects of noise introduction by synchronizing data transfer to a received signal |
Nov. 17, 1998 |
| 5832040 |
Phase detector |
Nov. 3, 1998 |
| 5832043 |
System and method for maintaining continuous phase during up/down conversion of near-zero hertz intermediate frequencies |
Nov. 3, 1998 |
| 5828710 |
AFC frequency synchronization network |
Oct. 27, 1998 |
| 5828709 |
Apparatus and method for improving stability of transmitting frequency by using costas loop section in communication system of half duplex transmitting method |
Oct. 27, 1998 |
| 5825833 |
Digital and analog reception apparatus |
Oct. 20, 1998 |
| 5822373 |
Method and apparatus for optimization of wireless communications |
Oct. 13, 1998 |
| 5822366 |
Transceiver and method for generating and processing complex I/Q-signals |
Oct. 13, 1998 |
| 5818882 |
Frequency offset cancellation apparatus |
Oct. 6, 1998 |
| 5818832 |
Rapid synchronization for communication systems |
Oct. 6, 1998 |
| 5815535 |
Carrier recovery apparatus |
Sep. 29, 1998 |
| 5815536 |
Multivalue digital transmission system |
Sep. 29, 1998 |
| 5812615 |
Apparatus and method for maximizing frequency offset tracking performance in a digital receiver |
Sep. 22, 1998 |
| 5812523 |
Method and device for synchronization at OFDM-system |
Sep. 22, 1998 |
| 5812611 |
Frequency estimating circuit and AFC circuit using the same |
Sep. 22, 1998 |
| 5812614 |
Apparatus and method for maximizing frequency offset tracking performance in a digital receiver |
Sep. 22, 1998 |
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