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Class Information
Number: 720/669
Name: Dynamic optical information storage or retrieval > Dynamic mechanism optical subsystem > Having power driven optical transducer assembly > Plural transducers for a single disc side
Description: Subject matter comprising two or more optical transducer assemblies placed on the same side of the optical storage medium for accessing to the same side of the optical storage medium during recording or reproducing.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7334245 |
Optical disk apparatus |
Feb. 19, 2008 |
| 7188349 |
Optical disk device |
Mar. 6, 2007 |
| 6895593 |
Actuator having a plurality of objective lenses installed in a lens holder used with an optical pickup |
May. 17, 2005 |
| 6118747 |
Scanning device for optical discs |
Sep. 12, 2000 |
| 6021107 |
Optical pickup device and recording and/or reproducing apparatus for optical disc |
Feb. 1, 2000 |
| 5870367 |
Disc recording and/or reproducing apparatus |
Feb. 9, 1999 |
| 5721723 |
Objective lens driving device, data recording device, and data reproducing device, all having driver force selectively 120 tutine and positioning the objective lenses |
Feb. 24, 1998 |
| 5677904 |
Disc player |
Oct. 14, 1997 |
| 5675566 |
Recording and/or reproducing apparatus and a cartridge for a recording medium |
Oct. 7, 1997 |
| 5027340 |
Object lens head assembly |
Jun. 25, 1991 |
| 4888751 |
Image information processing apparatus |
Dec. 19, 1989 |
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