Communications

Telephonic Communications

Line Equalization Or Impedance Matching

No:6819760

Adaptive energy detector gain control in physical layer transceiver for home telephone wire network

No:5598455

Alarm and test system for a digital added main line

No:4381561

All digital lsi line circuit for analog lines

No:6731751

Apparatus for cordless computer telephony

No:4273963

Automatic equalization for digital transmission systems

No:4277655

Automatic gain repeater

No:5459440

Automatic impedance matching with potential monitoring means

No:4835494

Automatic level control system for broadband cable systems

No:4351060

Automatic, digitally synthesized matching line terminating impedance

No:5737411

Battery switching in a telephone subscriber line interface circuit

No:7440568

Bipolar pulse forming line

No:6314181

Bridged tap canceller

No:6240178

Bridged tap terminator

No:4970722

Broadband local area network

No:4996497

Cable compensation circuit

No:5557672

Channel interface unit

No:4852160

Channel unit interface circuit

No:6788745

Circuit and method for active termination of a transmission line

No:6950512

Circuit arrangement for forming the termination of an analogous subscriber line

No:5038375

Circuit arrangement for preventing gain from responding to frequency variation despite the presence of an isolation transformer

No:7023985

Circuit for electronically generating a call impedance

No:5054062

Circuit for maintaining hybrid cancellation of signals in a communication system

No:4961219

Circuit for synthesizing an impedance across the tip and ring leads of a telephone line circuit

No:5459787

Circuit for the implementation of an impedance for a telephone speech circuit

No:4359609

Circuit with feedback for controlling the impedance thereof

No:5271060

Circuitry for interfacing telecommunications equipment to a communication channel

No:6492880

Common mode termination

No:7430291

Common mode transmission line termination

No:6198817

Communication interface having combined shaping of receive response and synthesized matching terminating impedances for different frequency bands and a design method therefor

No:6181792

Communication interface having synthesized matching impedances for different frequency bands and a design method therefor

No:6477249

Communications signal splitter and filter

No:6757383

Compact cable balance network for echo-cancelling, and method for optimizing transhybrid loss and method and apparatus for circuit simulation

No:5541990

Compensated hybrid

No:3622708

Conference circuit

No:6970557

Cordless telephone-to-sound card interface adapter having a hybrid transformer circuit

No:7215764

Current sensing echo cancellation device

No:5742417

Data access arrangement having improved transmit-receive separation

No:7139392

Device and method for suppressing dsl signal echo induced by bridgetap

No:5649009

Differential longitudinal amplifier for a subscriber line interface circuit

No:5878133

Digital direct current feed control for a communication system

No:6947529

Dsl compatible load coil

No:5426697

Duplex communication coupler system

No:2048604

Electromagnetic coupling device

No:5825259

Electromagnetic interference isolator with common mode choke

No:4567331

Electronic hybrid having synthesized impedance circuitry

No:5097503

Electronic subscriber line connection circuit

No:7072462

Estimation of dsl telephone loop capability using cazac sequence

No:6275581

Extended feedback circuit employing capacitive coupling and sampled data filters

No:4947386

Fixed gain fixed loss amplification system

No:6842518

Frequency-dependent impedance synthesis for dsl interface circuits