Communications

Demodulators

Including Logic Element (e.g., Logic Gate Or Flip-flop)

No:5521938

Apparatus for performing frequency conversion in a communication system

No:4250458

Baseband dc offset detector and control circuit for dc coupled digital demodulator

No:5399987

Bi-phase shift keying signal demodulation circuit for rds receiver

No:5097220

Circuit for demodulating psk modulated signal by differential-defection

No:5789988

Clock recovery circuit for qam demodulator

No:7148743

Demodulation device for reacquiring a modulated signal if reception is interrupted

No:5640427

Demodulator

No:5202643

Demodulator for demodulating a π/4-shift dqpsk signal

No:5504454

Demodulator for powerline carrier communications

No:5436591

Demodulator for radio data signals

No:6236263

Demodulator having cross polarization interference canceling function

No:5122758

Differential phase demodulator for psk-modulated signals

No:5200980

Digital bi phase data recovery system

No:3758870

Digital demodulator

No:6130577

Digital demodulators for phase modulated and amplitude-phase modulated signals

No:5977821

Digital detection method and circuit for psk modulated signals

No:4715047

Digital differential phase shift keyed demodulator

No:5524120

Digital low power symbol rate detector

No:6459743

Digital reception with radio frequency sampling

No:4959619

Digital transmission demodulator including an automatic fault corrector

No:5272446

Digitally implemented fast frequency estimator/demodulator for low bit rate maritime and mobile data communications without the use of an acquisition preamble

No:5504455

Efficient digital quadrature demodulator

No:6133785

False carrier lock receiver and associated methods for detection

No:4771438

Method and apparatus for phase reference recovery in high speed fast turnaround modem

No:4281412

Method of and apparatus for transmitting and recovering offset qpsk modulated data

No:5519356

Methods and apparatuses for fast decision directed carrier recovery with wide locking range

No:4641323

Multi-phase psk demodulator

No:5614861

N-phase modulated signal demodulation system with carrier reproduction

No:6163208

One bit digital phase shift keyed carrier recovery and demodulator circuit

No:6075408

Oqpsk phase and timing detection

No:5121070

Phase demodulator for psk-modulated signals

No:4686484

Phase detection circuit

No:5239561

Phase error processor

No:5376894

Phase estimation and synchronization using a psk demodulator

No:4021743

Phase logic demodulator

No:4829542

Psk modem system having improved demodulation reliability

No:4835483

Qam demodulator with rapid resynchronization function

No:4606051

Qpsk demodulator with i and q post-detection data correction

No:4584693

Qpsk system with one cycle per baud period

No:4801899

Quadrature amplitude modulation/demodulation device using multi-level digital signals

No:5808509

Receiver and demodulator for phase or frequency modulated signals

No:5786725

Reduced complexity maximum likelihood multiple symbol differential detector

No:5942937

Signal detection circuit using a plurality of delay stages with edge detection logic

No:4373151

Stochastic demodulator for phase jump-modulated signals, operating in time divided up over several channels

No:4796279

Subrate preamble decoder for a high speed modem

No:5892797

System and method for recovering data encoded using manchester code and other bi-phase level codes

No:4146841

Technique for combatting jitter in multiple phase transmission system