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Edge detecting apparatus, noise eliminating apparatus, edge detecting method, and noise eliminating method and program Grant 7,457,475 - Nagai November 25, 2 | 2008-11-25 |
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Optical disk, optical disk recording and reproducing apparatus, method for recording, reproducing and deleting data on optical disk, and information processing system App 20050185547 - Nagai, Takahiro ;   et al. | 2005-08-25 |
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Optical disc App 20040196759 - Ishibashi, Kenzo ;   et al. | 2004-10-07 |
Method for substituting defective recording of discoid recording medium and discoid recording medium recording and reproducing device Grant RE38,611 - Takagi , et al. October 5, 2 | 2004-10-05 |
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Data transfer device and data transfer method Grant 6,687,860 - Iijima , et al. February 3, 2 | 2004-02-03 |
Authentication communication system, authentication communication apparatus, and authentication communication method App 20040003239 - Ohmori, Motoji ;   et al. | 2004-01-01 |
Recording medium, recording apparatus, reading apparatus, and program and method therefore App 20030231334 - Nagai, Takahiro ;   et al. | 2003-12-18 |
Information recording medium, recording apparatus, and reproduction apparatus App 20030189884 - Yumiba, Takashi ;   et al. | 2003-10-09 |
Recording defect substitution method for a disc-shaped recording medium, and a recording and reproducing apparatus for a disc-shaped recording medium Grant 6,549,499 - Takagi , et al. April 15, 2 | 2003-04-15 |
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Encrypted data signal, data storage medium, data signal playback apparatus, and data signal recording apparatus App 20020015494 - Nagai, Takahiro ;   et al. | 2002-02-07 |
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Method for substituting defective recording of discoid recording medium and discoid recording medium recording and reproducing device Grant 6,134,214 - Takagi , et al. October 17, 2 | 2000-10-17 |
Optical disk and an optical disk recording reproduction device Grant 5,862,112 - Nagai , et al. January 19, 1 | 1999-01-19 |
Method for managing defects in an information recording medium, and a device and information recording medium using said method Grant 5,715,221 - Ito , et al. February 3, 1 | 1998-02-03 |