System for reproducing a signal recorded in a magnetic recording medium by using a magnetostatic wave
Patent 5065378 Issued on November 12, 1991. Estimated Expiration Date: 
October 29, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
October 29, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesBeam spot scanning device Integrated optical signal processor using diffraction of light by magnetostatic waves Magneto-optic recording structure and method Patent #: 4694358 InventorsAssigneeApplicationNo. 604992 filed on 10/29/1990US Classes:369/14, SIMULTANEOUS DIVERSE TYPES OF STORAGE OR RETRIEVAL369/13.01STORAGE OR RETRIEVAL BY SIMULTANEOUS APPLICATION OF DIVERSE TYPES OF ELECTROMAGNETIC RADIATIONExaminersPrimary: McElheny, Donald Jr.Attorney, Agent or FirmInternational ClassG11B 007/00Foreign Application Priority Data1984-12-12 JPAbstractA magnetic record reproducing method includes the steps of bringing a magnetic film, capable of producing a magneto static wave, into intimate contact with or proximity to the recording surface of a magnetic recording medium, causing the magnetic film to produce the magnetostatic wave, detecting any variation in wave number in the magnetostatic wave attributable to the magnetized signal of the recording surface, and converting the variation in wave number in the magnetostatic wave into an electrical signal.Other References
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