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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 |
| 5809088 |
Digital carrier wave restoring device and method for use in a television signal receiver |
Sep. 15, 1998 |
| 5805984 |
Method and apparatus for eliminating frequency mismatch between a transmitter and a receiver |
Sep. 8, 1998 |
| 5802117 |
Method and apparatus for joint frequency offset and timing estimation of a multicarrier modulation system |
Sep. 1, 1998 |
| 5799034 |
Frequency acquisition method for direct sequence spread spectrum systems |
Aug. 25, 1998 |
| 5796786 |
Phase error detecting method and phase tracking loop circuit |
Aug. 18, 1998 |
| 5793819 |
Radio communication terminal station |
Aug. 11, 1998 |
| 5790604 |
Method and apparatus for automatic frequency correction acquisition |
Aug. 4, 1998 |
| 5789988 |
Clock recovery circuit for QAM demodulator |
Aug. 4, 1998 |
| 5774799 |
Automatic frequency control with adjacent channel interference protection |
Jun. 30, 1998 |
| 5774503 |
Demodulation method and demodulation device |
Jun. 30, 1998 |
| 5774494 |
Frequency error correction device of a spread-spectrum communication receiver |
Jun. 30, 1998 |
| 5768321 |
Automatic frequency control unit which detects a frame pattern in a phase modulation signal |
Jun. 16, 1998 |
| 5768323 |
Symbol synchronizer using modified early/punctual/late gate technique |
Jun. 16, 1998 |
| 5764630 |
Forward link carrier recovery in an OCDMA spread spectrum communication system without a pilot tone |
Jun. 9, 1998 |
| 5761250 |
Iterative filtering frequency estimator and estimation method |
Jun. 2, 1998 |
| 5757858 |
Dual-mode digital FM communication system |
May. 26, 1998 |
| 5757855 |
Data detection for partial response channels |
May. 26, 1998 |
| 5757864 |
Receiver with filters offset correction |
May. 26, 1998 |
| 5757865 |
Carrier phase control circuit |
May. 26, 1998 |
| 5754591 |
System for, and method of, processing quadrature amplitude modulated signals |
May. 19, 1998 |
| 5751766 |
Non-invasive digital communications test system |
May. 12, 1998 |
| 5748682 |
Oscillator frequency offset error estimator for communications systems |
May. 5, 1998 |
| 5745525 |
Method and system for simultaneously broadcasting and receiving digital and analog signals |
Apr. 28, 1998 |
| 5740205 |
Apparatus and method for maximizing frequency offset tracking performance in a digital receiver |
Apr. 14, 1998 |
| 5734972 |
Automatic frequency controller |
Mar. 31, 1998 |
| 5732339 |
Frequency offset correction |
Mar. 24, 1998 |
| 5732111 |
Frequency error compensation for direct sequence spread spectrum systems |
Mar. 24, 1998 |
| 5729570 |
Orthogonal code division multiple access communication system having multicarrier modulation |
Mar. 17, 1998 |
| 5727030 |
Automatic frequency control circuit applicable to a mobile communication system |
Mar. 10, 1998 |
| 5726973 |
Method and arrangement for synchronization in OFDM modulation |
Mar. 10, 1998 |
| 5724397 |
Method for synchronizing a receiver |
Mar. 3, 1998 |
| 5721756 |
Digital receiver with tunable analog parameters and method therefor |
Feb. 24, 1998 |
| 5717721 |
Demodulation correcting circuit for FSK receiver |
Feb. 10, 1998 |
| 5715281 |
Zero intermediate frequency receiver |
Feb. 3, 1998 |
| 5710796 |
Method and receiver for determining a phase error in a radio-frequency signal |
Jan. 20, 1998 |
| 5706315 |
Automatic frequency control device for tuning an intermediate frequency signal to a target frequency |
Jan. 6, 1998 |
| 5706314 |
Joint maximum likelihood channel and timing error estimation |
Jan. 6, 1998 |
| 5699385 |
Method and apparatus for locating and tracking a QPSK carrier |
Dec. 16, 1997 |
| 5696797 |
Demodulator with baseband doppler shift compensation and method |
Dec. 9, 1997 |
| 5692016 |
Process and arrangement for adjusting the local oscillators of a receiver in a multi-channel transmission system |
Nov. 25, 1997 |
| RE35650 |
Spread spectrum communications system |
Nov. 4, 1997 |
| 5678215 |
Method for frequency locking onto a pilot reference signal affected by multipath fading |
Oct. 14, 1997 |
| 5675498 |
Measuring amplitude of sparsely sampled sinusoidal signal |
Oct. 7, 1997 |
| 5675284 |
Frequency lock indicator for FPLL demodulated signal having a pilot |
Oct. 7, 1997 |
| 5663989 |
Control arrangements for digital radio receivers |
Sep. 2, 1997 |
| 5661761 |
Quasi-synchronous detection and demodulation circuit and frequency discriminator used for the same |
Aug. 26, 1997 |
| 5642385 |
Frequency detector for carrier frequency synchronization |
Jun. 24, 1997 |
| 5640431 |
Method and apparatus for offset frequency estimation for a coherent receiver |
Jun. 17, 1997 |
| 5638140 |
FPLL having AFC filter with limited phase shift |
Jun. 10, 1997 |
| 5636250 |
Automatic VSB/QAM modulation recognition method and apparatus |
Jun. 3, 1997 |
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