Image and audio communication system having graphical annotation

Details Image and audio communication system having graphical annotation Image and audio communication system having graphical annotation

1993-04-20

1996-03-26

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

3701101, 370 84, 379 93, 348 14, 348552, H04M 1100

Patent

active

055027270

ABSTRACT:
A telephone apparatus enables the approximate simultaneous transmission and reception of audio interleaved with image and graphical annotation signals, in data packet form, over an analog line which connects the apparatus to a switched telephone network. The audio data packets are transmitted at a periodic rate, during a first time interval, and the image and annotation data packets are transmitted during a second time interval, following the first time interval, enabling the simultaneous output of voice, image and annotation data at the receiver site. Control data packets, as needed, are also transmitted during the second time interval for end-to-end apparatus control. One feature enables the transmission of audio data packets at a first periodic rate, when in an image transmission mode, and at a second periodic rate, faster than the first periodic rate, when not in the image transmission mode.

REFERENCES:
patent: 4994912 (1991-02-01), Lumelsky et al.
patent: 5150357 (1992-09-01), Hopner et al.
patent: 5300943 (1994-04-01), Jakobs et al.
patent: 5309434 (1994-05-01), Maekawa
patent: 5347305 (1994-09-01), Bush et al.
patent: 5351276 (1994-09-01), Doll, Jr. et al.
"Concept's Image 30" TeleConference, Jul. 1988.

Affiliated with

Also associated with

Rating

Image and audio communication system having graphical annotation does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Image and audio communication system having graphical annotation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image and audio communication system having graphical annotation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-921686