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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 |
| 5317600 |
Coarse tuning of the channel frequency |
May. 31, 1994 |
| 5311546 |
Carrier phase recovery for an adaptive equalizer |
May. 10, 1994 |
| 5311545 |
Modem for fading digital channels affected by multipath |
May. 10, 1994 |
| 5309481 |
Apparatus for adjusting signal points, equalizer coefficients and the like |
May. 3, 1994 |
| 5299231 |
Method and device for estimating the carrier frequency of a modulated data signal |
Mar. 29, 1994 |
| 5289506 |
Automatic frequency control circuit |
Feb. 22, 1994 |
| 5287388 |
Frequency offset removal method and apparatus |
Feb. 15, 1994 |
| 5283780 |
Digital audio broadcasting system |
Feb. 1, 1994 |
| 5282228 |
Timing and automatic frequency control of digital receiver using the cyclic properties of a non-linear operation |
Jan. 25, 1994 |
| 5282227 |
Communication signal detection and acquisition |
Jan. 25, 1994 |
| 5276710 |
Carrier frequency error detector capable of accurately detecting a carrier frequency error |
Jan. 4, 1994 |
| 5271041 |
Method and apparatus for QPR carrier recovery |
Dec. 14, 1993 |
| 5260671 |
Receiving circuit for demodulating an angle modulated signal |
Nov. 9, 1993 |
| 5255290 |
Method and apparatus for combined frequency offset and timing offset estimation |
Oct. 19, 1993 |
| 5249204 |
Circuit and method for phase error correction in a digital receiver |
Sep. 28, 1993 |
| 5249202 |
Radio communication |
Sep. 28, 1993 |
| 5249203 |
Phase and gain error control system for use in an I/Q direct conversion receiver |
Sep. 28, 1993 |
| 5247543 |
Carrier aquisition apparatus for digital satellite communication system |
Sep. 21, 1993 |
| 5245632 |
Synchronous FSK detection |
Sep. 14, 1993 |
| 5241562 |
Spread spectrum communications system |
Aug. 31, 1993 |
| 5241688 |
Frequency and time slot synchronizaton using adaptive filtering |
Aug. 31, 1993 |
| 5239585 |
Devices, systems, and methods for composite signal decoding |
Aug. 24, 1993 |
| 5233632 |
Communication system receiver apparatus and method for fast carrier acquisition |
Aug. 3, 1993 |
| 5233633 |
Automatic frequency control by an adaptive filter |
Aug. 3, 1993 |
| 5230088 |
Radio transceiver and related method of frequency control |
Jul. 20, 1993 |
| 5230011 |
Receiver |
Jul. 20, 1993 |
| 5228062 |
Method and apparatus for correcting for clock and carrier frequency offset, and phase jitter in multicarrier modems |
Jul. 13, 1993 |
| 5222079 |
Adaptive information signal receiver |
Jun. 22, 1993 |
| 5220584 |
System for demodulation and synchronizing multiple tone waveforms |
Jun. 15, 1993 |
| 5214674 |
Method and apparatus for carrier synchronization acquisition in a digital burst mode communication system |
May. 25, 1993 |
| 5208835 |
Automatic frequency control system and method for frequency-shift-key data transmission systems |
May. 4, 1993 |
| 5206886 |
Method and apparatus for correcting for clock and carrier frequency offset, and phase jitter in mulicarrier modems |
Apr. 27, 1993 |
| 5202902 |
Carrier recovery method for modulation having a large number of states, and apparatus for implementing the method |
Apr. 13, 1993 |
| 5200977 |
Terminal unit apparatus for time division multiplexing access communications system |
Apr. 6, 1993 |
| RE34206 |
Method and apparatus for timing recovery |
Mar. 30, 1993 |
| 5170492 |
Digitally frequency-locking a radio transceiver to the received signal |
Dec. 8, 1992 |
| 5163159 |
Dual mode automatic frequency control |
Nov. 10, 1992 |
| 5155466 |
Automatic frequency control system |
Oct. 13, 1992 |
| 5150382 |
Frequency error detecting apparatus |
Sep. 22, 1992 |
| 5148452 |
Global positioning system digital receiver |
Sep. 15, 1992 |
| 5148451 |
Carrier regeneration device correctly operable in mobile satellite communication |
Sep. 15, 1992 |
| 5144280 |
Bi-directional multi-frequency ripple control system |
Sep. 1, 1992 |
| 5142237 |
Method of demodulation |
Aug. 25, 1992 |
| RE34036 |
Data transmission using a transparent tone-in band system |
Aug. 18, 1992 |
| 5136616 |
Method of rapidly controlling the frequency of a coherent radio receiver and apparatus for carrying out the method |
Aug. 4, 1992 |
| 5131008 |
DSP-based GMSK coherent detector |
Jul. 14, 1992 |
| 5131009 |
Digital radio link receiving device |
Jul. 14, 1992 |
| 5128968 |
Apparatus for cancelling carrier phase jitters |
Jul. 7, 1992 |
| 5121414 |
Carrier frequency offset equalization |
Jun. 9, 1992 |
| 5113416 |
Digital radio frequency compensation |
May. 12, 1992 |
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