Data demodulation system
CA 1313268 C · Owner: Riggle, Charles Michael · Inventors: Weng, Lih-Jyh; Riggle, Charles Michael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A data demodulator assigns a binary value to the signal recorded in a transition cell based on the amplitude of the signal in the transition cell, the amplitudes of the signal in adjacent transition cells and system experience in categorizing how recording non-linearities and system no se effect the signals. The recorded analog signal in the transition cell for which a binary value is to be determined and the recorded analog signal in a selected number of transition cells adjacent to that cell are each sampled a selected number of times. The amplitude of each of the signal samples is then converted to a digital signal symbol. Portions of the digital signal symbol are concatenated to form an …
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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 January 26, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 26, 2010.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.