Title:
光ヘッドのフォーカス誤差検出方法および装置
Document Type and Number:
Japanese Patent JP3552607
Kind Code:
B2
Inventors:
Tsutomu Matsui
Application Number:
JP26571299A
Publication Date:
August 11, 2004
Filing Date:
September 20, 1999
Export Citation:
Assignee:
NEC
International Classes:
G11B7/09; G11B7/135; (IPC1-7): G11B7/09; G11B7/135
Domestic Patent References:
| JP9180205A | ||||
| JP8212584A | ||||
| JP11096569A | ||||
| JP1237940A | ||||
| JP7130022A |
Attorney, Agent or Firm:
Masahiko Desk
Yasuhisa Tanizawa
Kawai Nobuaki
Yasuhisa Tanizawa
Kawai Nobuaki