Head switching method for staggered servo and circuit thereof
CA 2120522 C · Owner: Samsung Electronics Co. Ltd. · Inventors: Lee, Kwang-Heui
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A head-switching circuit for switching a first head operating on a first recording, medium to a second head operating on a second recording medium so as to read out data, written on a recording medium according to a staggered servo mechanism includes a, selector for selecting one of the recording media a classifier 20, 30, 31, 32 , and 33 for classifying the skew time of a recording medium selected by the selector and another, recording medium selected by the selector a sync signal generator 40, 41, 42, 50 51, 60, 61, 62, 70, 71, 72 and 80 enabled by the output signal of the classifier and for, generating a sync signal when the skew time is identical with a predetermined time, thereby …
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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
- Filed November 30, 1992 and granted April 18, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 30, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 30, 2014.
- 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
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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.