Combined magnetic channel signal sensor and servo control track following system and method
CA 1295418 C · Owner: International Business Machines Corporation · Inventors: Vinal, Albert W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract, Servoing is accomplished utilizing the same read head and the same data track by utilizing a differentially sensitive magnetic sensor. The sensor is utilized as the data read back head sensitive element but separate outputs from the differential sensor are supplied to separate track following amplifiers isolated from the data signal amplifier. The separate amplifiers for the servo information utilize the inherent differential sensitivity of the sensor. As one-half or the other of the differentially sensitive sensor drifts over the edge of a recorded data track, its signal output level will follow. This differential between the left and right halves of the sensor in the form of a …
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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 February 4, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 4, 2009.
- 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.