Method and apparatus for inserting data records on magnetic tape
CA 1056498 A · Owner: Sycor · Inventors: Klumpp, Marlin K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A threshold detector is coupled to a "write" head in a recording apparatus to detect the leading edge of the first transition of previously recorded data and provide a control signal therefrom. A control circuit coupled to the threshold detector switches the recording apparatus to the "write" or recording mode of operation immediately upon the detection of the predetermined threshold voltage from the write head so that the same head then immediately switches its operation and operates to record new data information directly and accurately over the previously recorded data. By utilizing this method, new records can automatically be inserted accurately in a particular segment of a previously …
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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 June 12, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 12, 1996.
- 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.