Issued Patents All Time
Showing 26–39 of 39 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5812512 | Data reproducing apparatus which prohibits illegitimate access to data using an internal ID | Takeshi Funahashi | 1998-09-22 |
| 5781565 | Data recording/reproducing method, data reproducing apparatus and recording medium | Yoichiro Sako, Tamotsu Yamagami, Satoshi Otsuka | 1998-07-14 |
| 5761171 | Generating data detecting threshold levels from reference patterns recorded in an optical disk, such as a magneto-optical disk | — | 1998-06-02 |
| 5721873 | Data reproducing apparatus | Takeshi Funahashi | 1998-02-24 |
| 5675586 | Record medium, and method for recording to and reproducing from a record medium | Yoichiro Sako, Tamotsu Yamagami, Satoshi Otsuka | 1997-10-07 |
| 5654948 | Disc apparatus for recording/reproducing with zone constant angular velocity | — | 1997-08-05 |
| 5592454 | Data reproducing apparatus which replaces vendor unique identification data in response to a reference error correction rate which is lower than that used for replacement of other data | Takeshi Funahashi | 1997-01-07 |
| 5506827 | Digital data reproducing apparatus | — | 1996-04-09 |
| 5469415 | Optical information recording or reproducing apparatus with asymmetry compensation | Goro Fujita | 1995-11-21 |
| 5469420 | Multi-value recorded data detecting method | Goro Fujita | 1995-11-21 |
| 5363352 | Magneto-optic disk apparatus | Tamotsu Yamagami | 1994-11-08 |
| 5295130 | Apparatus and method for signal reproduction | Kunio Kawaguchi | 1994-03-15 |
| 5151905 | Data recording method | Shigeru Yokono | 1992-09-29 |
| 5136564 | Pit pattern detecting apparatus and method | — | 1992-08-04 |