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Patent applications and USPTO patent grants for Sugimura; Tatuo.The latest application filed is for "information recording/reproducing apparatus with means for substituting predetermined good sectors for defective ones".
Patent | Date |
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Information recording/reproducing apparatus with means for substituting predetermined good sectors for defective ones Grant 4,841,498 - Sugimura , et al. June 20, 1 | 1989-06-20 |
Optical disk exclusively used for reproduction wherein guide grooves located between data managing information and data recording regions have no track address sections Grant 4,789,979 - Hiraoka , et al. December 6, 1 | 1988-12-06 |
Apparatus for determining defective or non-used sectors of an optical dish Grant 4,768,181 - Ichinose , et al. August 30, 1 | 1988-08-30 |
Optical information recording and reproducing apparatus having defective-sector marking means Grant 4,742,507 - Kuroki , et al. May 3, 1 | 1988-05-03 |
Apparatus for detecting and correcting errors on product codes Grant 4,653,051 - Sugimura , et al. March 24, 1 | 1987-03-24 |
Data recording/reproducing apparatus Grant 4,630,140 - Sugimura , et al. December 16, 1 | 1986-12-16 |
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