Xiancheng Yuan

Follow

Person

Bedford, MA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for visual communications in a scalable networ...
- Patent number 5,821,986
- Issue date Oct 13, 1998
- PictureTel Corporation
- Xiancheng Yuan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for processing block coded image data to reduc...
- Patent number 5,367,385
- Issue date Nov 22, 1994
- PictureTel Corporation
- Xiancheng Yuan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Hierarchical encoding method and apparatus employing background ref...
- Patent number 5,155,594
- Issue date Oct 13, 1992
- PictureTel Corporation
- Jeffrey Bernstein
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Hierarchical entropy coded lattice threshold quantization encoding...
- Patent number 5,150,209
- Issue date Sep 22, 1992
- PictureTel Corporation
- Richard L. Baker
- G06 - COMPUTING CALCULATING COUNTING