Pulse signal transmission system
CA 1192313 A · Owner: Hitachi Ltd. · Inventors: Nagano, Katsuyuki; Yoshine, Hiroki; Takasaki, Yoshitaka
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract:, A two-level alternate mark inversion signal transmission system converts binary pulses of "1" and "0" into a pulse signal in which one has its polarity inverted at a period T and the other at a period ?. The converted signal is then transmitted. In order to facilitate an automatic gain control and the extraction of a timing signal in the receiver, even when the zero binary pulses have successively arisen, on a transmitting side the, alternate mark inversion signal is converted in the transmitter into a specified code (zero substitution) while in the receiver, the received signal is subjected to duobinary shaping whereby the zero substitution part of the signal is detected for …
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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 August 20, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 20, 2002.
- 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.