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Title:
APPARATUS AND METHOD FOR INFORMATION PROCESSING
Document Type and Number:
Japanese Patent JP3450360
Kind Code:
B2
Abstract:

PURPOSE: To obtain an information processing apparatus wherein it can radiate laser beams having a plurality of kinds of wavelengths and it can access information recording media provided with a plurality of kinds of characteristics.
CONSTITUTION: A first optical head 57 is provided with semiconductor lasers 71, 73 which can radiate laser beams having two kinds of wavelengths. The first optical head 57 can radiate a laser beam at 830nm and a laser beam at 680nm simultaneously or alternately by a control means 69 installed at a higher- level. The control means 69 is provided with a medium discrimination part 95. In addition, the medium discrimination part 95 is connected to a recording- layer discrimination part 97 and a substrate discrimination part 107, and the operation of the semiconductor lasers 71, 73 is controlled by the recordinglayer discrimination part 97 and the substrate discrimination part 107. In addition, amplifiers 109, 111, 113, 115 to be used are controlled by a preformatted-part detection part 123.


Inventors:
Suzuki, Katsumi
Maeda, Masaki
Koyahara, Satoru
Application Number:
JP1992000296245
Publication Date:
September 22, 2003
Filing Date:
November 06, 1992
Export Citation:
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Assignee:
TOSHIBA CORP
International Classes:
G11B7/00; G11B7/004; G11B7/0045; G11B7/005; G11B7/125; (IPC1-7): G11B7/125; G11B7/0045; G11B7/005
Attorney, Agent or Firm:
外川 英明