Bandwidth reduction method and structure for combining voice and data in a pcm channel
CA 1162667 A · Owner: American Microsystems, Inc. · Inventors: Godbole, Vishwas R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a method and structure for the simultaneous transmission of voice and data information over the same PCM transmission channel. In the present invention analog voice information is sampled at a first sampling rate, during periods when voice information is to be transmitted at a frequency which provides a digitized voice rate equal to the transmission rate capability of the transmission channel. During periods when both voice and data are to be transmitted the analog voice information is, sampled at a second sampling rate less then the first sampling rate thus, allowing the merged voice and data information to have a total digitized transmission rate equal to the transmission …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted February 21, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 21, 2001.
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Timeline
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.