Issued Patents 1989
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4882721 | Offset for protection against amorphous pips | Roger R. Bracht | 1989-11-21 |
| 4879707 | Optical disk tracking and seeking systems specific track formats using discontinuities | Kurt W. Getreuer, Pierre Robert Valère Sonneville | 1989-11-07 |
| 4879708 | Optical disk tracking and seeking systems specific track formats using wobbled pits | Kurt W. Getreuer | 1989-11-07 |
| 4866686 | Optical record carrier and apparatus for reading the record carrier | — | 1989-09-12 |
| 4855742 | Method of transmitting n-bit information words, information transmission system for carrying out the method, and encoding device and decoding device for use in the information-transmission system | — | 1989-08-08 |
| 4802154 | High density codes for optical recording | Christiaan Steenbergen | 1989-01-31 |