| |
 |
|
Class Information
Number: 329/310
Name: Demodulators > Phase shift keying or quadrature amplitude demodulator > Including logic element (e.g., logic gate or flip-flop)
Description: Subject matter containing a component which performs a Boolean Algebraic operation.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7148743 |
Demodulation device for reacquiring a modulated signal if reception is interrupted |
Dec. 12, 2006 |
| 6879646 |
Quadrature amplitude modulation demodulator and receiver |
Apr. 12, 2005 |
| 6839389 |
Digital quadrature demodulation and decimation without multipliers |
Jan. 4, 2005 |
| 6459743 |
Digital reception with radio frequency sampling |
Oct. 1, 2002 |
| 6246281 |
Absolute phasing circuit |
Jun. 12, 2001 |
| 6236263 |
Demodulator having cross polarization interference canceling function |
May. 22, 2001 |
| 6163208 |
One bit digital phase shift keyed carrier recovery and demodulator circuit |
Dec. 19, 2000 |
| 6140869 |
Device for demodulating a binary phase-shift keyed signal |
Oct. 31, 2000 |
| 6133785 |
False carrier lock receiver and associated methods for detection |
Oct. 17, 2000 |
| 6130577 |
Digital demodulators for phase modulated and amplitude-phase modulated signals |
Oct. 10, 2000 |
| 6075827 |
DQPSK mapping circuit |
Jun. 13, 2000 |
| 6075408 |
OQPSK phase and timing detection |
Jun. 13, 2000 |
| 6028475 |
Method and apparatus for demodulating multi-level QAM signal |
Feb. 22, 2000 |
| 5977821 |
Digital detection method and circuit for PSK modulated signals |
Nov. 2, 1999 |
| 5977820 |
Phase estimating circuit and demodulating circuit |
Nov. 2, 1999 |
| 5945875 |
.pi./n shift phase-shift keying demodulator |
Aug. 31, 1999 |
| 5942937 |
Signal detection circuit using a plurality of delay stages with edge detection logic |
Aug. 24, 1999 |
| 5933053 |
Burst demodulator |
Aug. 3, 1999 |
| 5892797 |
System and method for recovering data encoded using manchester code and other bi-phase level codes |
Apr. 6, 1999 |
| 5808509 |
Receiver and demodulator for phase or frequency modulated signals |
Sep. 15, 1998 |
| 5805018 |
High-speed demodulating method of burst data and apparatus for same |
Sep. 8, 1998 |
| 5789988 |
Clock recovery circuit for QAM demodulator |
Aug. 4, 1998 |
| 5786725 |
Reduced complexity maximum likelihood multiple symbol differential detector |
Jul. 28, 1998 |
| 5777511 |
Data demodulation apparatus |
Jul. 7, 1998 |
| 5640427 |
Demodulator |
Jun. 17, 1997 |
| 5614861 |
N-phase modulated signal demodulation system with carrier reproduction |
Mar. 25, 1997 |
| 5610948 |
Digital demodulation apparatus |
Mar. 11, 1997 |
| 5574399 |
Coherent PSK detector not requiring carrier recovery |
Nov. 12, 1996 |
| 5526381 |
Robust non-coherent detector for .pi./4-DQPSK signals |
Jun. 11, 1996 |
| 5524120 |
Digital low power symbol rate detector |
Jun. 4, 1996 |
| 5521938 |
Apparatus for performing frequency conversion in a communication system |
May. 28, 1996 |
| 5519356 |
Methods and apparatuses for fast decision directed carrier recovery with wide locking range |
May. 21, 1996 |
| 5504455 |
Efficient digital quadrature demodulator |
Apr. 2, 1996 |
| 5504454 |
Demodulator for powerline carrier communications |
Apr. 2, 1996 |
| 5484987 |
Delayed detection type demodulator |
Jan. 16, 1996 |
| 5457423 |
Radio data signal demodulator with clock signal recovery |
Oct. 10, 1995 |
| 5436591 |
Demodulator for radio data signals |
Jul. 25, 1995 |
| 5426669 |
Quadrature demodulator |
Jun. 20, 1995 |
| 5414384 |
Demodulator for radio data signals |
May. 9, 1995 |
| 5399987 |
Bi-phase shift keying signal demodulation circuit for RDS receiver |
Mar. 21, 1995 |
| 5376894 |
Phase estimation and synchronization using a PSK demodulator |
Dec. 27, 1994 |
| 5373247 |
Automatic frequency control method and circuit for correcting an error between a received carrier frequency and a local frequency |
Dec. 13, 1994 |
| 5369374 |
Differential detection demodulator |
Nov. 29, 1994 |
| 5367538 |
Apparatus and method for direct phase digitizing |
Nov. 22, 1994 |
| 5313170 |
Differential detection demodulator |
May. 17, 1994 |
| 5272446 |
Digitally implemented fast frequency estimator/demodulator for low bit rate maritime and mobile data communications without the use of an acquisition preamble |
Dec. 21, 1993 |
| 5239561 |
Phase error processor |
Aug. 24, 1993 |
| 5202643 |
Demodulator for demodulating a .pi./4-shift DQPSK signal |
Apr. 13, 1993 |
| 5200980 |
Digital bi phase data recovery system |
Apr. 6, 1993 |
| 5150070 |
Demodulator for biphase, suppressed-carrier PSK signals |
Sep. 22, 1992 |
|
|
|
