Simultaneous audio and video transmission with restricted bandwidth
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 18, 1989
Grant Date -
N/A
app pub date -
Jul 6, 1988
filing date -
Jul 6, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Method for simultaneously sending audio and video signals over standard telephone lines or other channels having a restricted bandwidth which comprises obtaining a video image, digitizing the image, modulating a signal with the digitized image, obtaining audio signals and filtering the audio signals to a frequency range of the band outside that of the modulated video signal, combining the filtered audio signals and the video signal, and transmitting such signals through the restricted bandwidth channel, together with a method for receiving such signals and apparatus for sending and receiving such signals.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully