Granted Patent
Utility
US 5,914,921 · App. 08/995,200
Disk drive apparatus initializing optical head during acceleration of disk, detecting control information and adjusting light emission prior to disk reaching a constant speed of rotation
Inventor:
Shigenori Yanagi
Patented Case
View Patent ↗
Granted: Jun 22, 1999
Filed: Dec 19, 1997
Inventor
Shigenori Yanagi
Assignee (at issue)
Fujitsu Limited
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.