Heping Ding

Person

Kanata, CA

People

Patents Grantslast 30 patents

Information Patent Grant
Stable adaptive filter and method
- Patent number 6,788,785
- Issue date Sep 7, 2004
- Nortel Networks Limited
- Heping Ding
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Stable adaptive filter and method
- Patent number 6,754,340
- Issue date Jun 22, 2004
- Nortel Networks Limited
- Heping Ding
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Tri-mode adaptive filter and method
- Patent number 6,687,723
- Issue date Feb 3, 2004
- Nortel Networks Limited
- Heping Ding
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Method of distinguishing between echo path change and double talk c...
- Patent number 6,226,380
- Issue date May 1, 2001
- Nortel Networks Limited
- Heping Ding
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for inhibiting echo in a channel of a communic...
- Patent number 6,178,162
- Issue date Jan 23, 2001
- Nortel Networks Corporation
- David Dal Farra
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Circuit and method of double talk detection for use in handsfree te...
- Patent number 6,049,606
- Issue date Apr 11, 2000
- Nortel Networks Corporation
- Heping Ding
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and system for controlling echo return loss using a compleme...
- Patent number 5,838,787
- Issue date Nov 17, 1998
- Northern Telecom Limited
- Heping Ding
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Dynamic optimization of handsfree microphone gain
- Patent number 5,796,818
- Issue date Aug 18, 1998
- Northern Telecom Limited
- Scott McClennon
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Heping Ding

Person

Patents Grantslast 30 patents

Stable adaptive filter and method

Stable adaptive filter and method

Tri-mode adaptive filter and method

Method of distinguishing between echo path change and double talk c...

Method and apparatus for inhibiting echo in a channel of a communic...

Circuit and method of double talk detection for use in handsfree te...

Method and system for controlling echo return loss using a compleme...

Dynamic optimization of handsfree microphone gain