Decoding apparatus and method for d.c. free data transmission system
CA 1090899 A · Owner: Ampex Corporation · Inventors: Miller, Jerry W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus for decoding transmitted binary data in which net DC components have been suppressed. The data is transmitted in successive clocked bit cells of a transmission channel wherein logical first bit states, e.g. 0's, are normally transmitted as signal transitions relatively early in respective bit cells, preferably at cell edge and, logical second bit states, e.g. 1's are normally transmitted as signal transitions relatively late in respective bit cells, preferably at mid-cell and any, transition relatively early in a bit cell following a transition relatively late in the next preceding bit cell is suppressed. The onset of a sequence of second bit states following a first …
Read the whole patent
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 December 2, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 2, 1997.
- 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.