| Patent Number |
Title Of Patent |
Date Issued |
| 7170887 |
Methods and apparatus for providing voice communications through a packet network |
January 30, 2007 |
| A communications system multiplexes voice communications signals onto one or more transport level connections established through a packetized network, such as the Internet. The invention supports the use of variable-length packets and accommodates variable jitter. The system conform |
| 6343141 |
Skin area detection for video image systems |
January 29, 2002 |
| An apparatus for detecting skin areas in video sequences is disclosed. The apparatus is configured to include a shape locator and a tone detector. The shape locator analyzes the input video sequences to identify the edges of all the objects in a video frame and determine whether such edg |
| 6304567 |
Methods and apparatus for providing voice communications through a packet network |
October 16, 2001 |
| A communications system multiplexes voice communications signals onto one or more transport level connections established through a packetized network, such as the Internet. The invention supports the use of variable-length packets and accommodates variable jitter. The system conform |
| 6088392 |
Bit rate coder for differential quantization |
July 11, 2000 |
| A feed-forward bit-rate control system that selects and formats DQUANT values in real time for optimal semantically-encoded image transmission by video-compression codecs complying with the ITU-T standards H.263 or H.263E. The system uses a prequantization process to reduce the compu |
| 5884064 |
System for emulating a virtual path in an ATM network |
March 16, 1999 |
| A facility for mapping a plurality of different Virtual Circuit Channels (VCC) into a single VCC is provided for use in a data network. In operation, the facility assembles, in turn, data cells each having a data payload and appropriate header identifying a respective VCC into a series |
| 5826225 |
Method and apparatus for improving vector quantization performance |
October 20, 1998 |
| A method and apparatus for providing high-speed data compressing without sacrificing the quality of data reconstruction. Each input vector or block of original data is expressed as a combination of a codebook index and an error differential, or as a compressed version of the original blo |
| 5745178 |
Global rate control for model-assisted coding of low bit rate video |
April 28, 1998 |
| A method and apparatus for coding an image comprising (at least) two regions (e.g., a facial region and a background region) which are to be coded with different quantization error parameters (e.g., quantizer step sizes), wherein the respective quantization error parameters are deter |
