Low bit rate audio-visual communication system having integrated

Details Low bit rate audio-visual communication system having integrated Low bit rate audio-visual communication system having integrated

1995-05-31

1996-08-20

Kostak, Victor R.

Television

Two-way video and voice communication

User positioning

348 17, 348 20, H04N 714

Patent

active

055483224

ABSTRACT:
Disclosed is a low bit rate audio and video communication system which employs an integrated encoding system that dynamically allocates available bits among the audio and video signals to be encoded based on the content of the audio and video information and the manner in which the audio and video information will be perceived by a viewer. A dynamic bit allocation and encoding process will evaluate the current content of the audio and video information and allocate the available bits among the audio and video signals to be encoded. In addition, an appropriate audio encoding technique is dynamically selected based on the current content of the audio signal. A face location detection subroutine will detect and model the location of faces in each video frame, in order that the facial regions may be more accurately encoded than other portions of the video frame. A lip motion detection subroutine will detect the location and movement of the lips of a person present in a video scene, in order to determine when a person is speaking and to encode the lip regions more accurately. The audio and video signals generated by a second party to a communication are monitored to determine if the second party is paying attention to the audio and video information transmitted by the first party to the communication.

REFERENCES:
patent: 4965819 (1990-10-01), Kawnes
patent: 5202759 (1993-04-01), Laycock
patent: 5347305 (1994-09-01), Bush

Affiliated with

Also associated with

Rating

Low bit rate audio-visual communication system having integrated does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Low bit rate audio-visual communication system having integrated, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low bit rate audio-visual communication system having integrated will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2333336