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Fujitsu Limited
Sony Corporation

Fujitsu and Sony Expand GIGAMO Standard to 2.3GB

-- Significant Increase in 3.5-inch Magneto Optical Disk Drive Capacity --

Tokyo, March 21, 2001 --- Fujitsu Limited and Sony Corporation today announced that they have enhanced the 3.5-inch magneto-optical (MO) GIGAMO1* disk drive standard to accommodate an increase in memory capacity from 1.3GB to 2.3GB. Fujitsu developed the new drive and Sony worked to improve the media that comply with the new standard, and both companies are now working to launch compatible products by fall 2001. Fujitsu and Sony will exhibit prototype models of the enhanced GIGAMO standard drive and media at CeBIT 2001, the world's largest IT trade exhibition, which takes place in Hannover (Germany) March 22 - 28.

The new MO products are expected to help facilitate high-speed file backup for commercial systems such as telephone switches and Automated Teller Machines, and they will also be ideal for storing and working with digital video and other large volumes of data. The new standard is fully backward compatible, accommodating all MO media ranging from 128MB to 1.3GB. In addition, it supports the Media ID function (announced in September 2000) for protection of copyrighted online digital content.

The newly developed 2.3GB GIGAMO standard requires minimal modifications to the optical recording/playing head used in the current line of MO drives. Higher-density recording has been made possible by using magnetically induced super resolution (MSR 2*) technology together with the land/groove recording method 3*, resulting in increased recording capacity. Multiple magnetic layers of the 2.3GB GIGAMO media have been optimally designed to offer comparable storage reliability and playback/recording durability to that of the existing MO systems.

The following manufacturers will support the new 2.3GB GIGAMO standard:
  - Drive manufacturers: Olympus Optical Co., Ltd., Konica Corporation
  - Media manufacturers: Teijin Limited, Hitachi Maxell, Ltd., Mitsubishi Chemical Corporation, Ritek Corporation.

* Standard2.3GB GIGAMOOriginal GIGAMOISO/IEC 15041
* Cartridge size90x94x6(mm)90x94x6(mm)90x94x6(mm)
* Memory capacity/
cartridge size
2.3GB1.3GB540 & 640MB
* Sector size2048 Bytes2048 Bytes512 & 2048 Bytes
* Track pitch0.67 micrometer0.90 micrometer1.10 micrometer
* Bit length of
MO area
0.233 micrometer0.29 micrometer0.49 micrometer
* Track memory
density (ID)
2200 channel bits/mm
6601 channel bits/mm
2634 channel bits/mm
5268 channel bits/mm
3125 channel bits/mm
3125 channel bits/mm
* Recording start
outer trackouter trackinner track


(*1) GIGAMO:
The 3.5-inch MO format standard for drives and media over 1GB in capacity, which was jointly developed by Fujitsu and Sony. New 2.3GB standard has now been introduced, in addition to existing 1.3GB standard. Both 2.3GB and 1.3GB standards are compatible with the ISO/IEC MO standard.

(*2) MSR (magnetically induced super resolution):
Magneto-optical recording technology has made it possible to achieve high linear and tracking density, with minimal modifications to the conventional optical head, as well as gigabyte-level storage volume. MSR is not susceptible to optical factors affecting beam diameter during playback. It utilizes temperature distribution and magnetism to make a smaller effective beam spot than can be achieved through optical technology alone. In addition, it can read and recognize marks recorded magnetically on a sub-optical scale.

(*3) Land/groove recording:
A method in which the guiding grooves for tracking as well as the area between the guiding grooves (land area) are used for the recording space, resulting in higher density recording.

* All company/product names mentioned may be trademarks or registered trademarks of their respective holders and are used for identification purposes only.

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[About Fujitsu Limited]
Fujitsu Limited (TSE: 6702) is a leading provider of Internet- based information technology solutions for the global marketplace. Comprising over 500 group companies and affiliates worldwide -- including ICL, Amdahl and DMR Consulting -- it had consolidated revenues of 5.26 trillion yen ($49.6 billion) in the fiscal year ended March 31, 2000. Fujitsu's pace-setting technologies, world-class computing and telecommunications platforms, and global corps of over 60,000 systems and services experts make it uniquely positioned to unleash the infinite possibilities of the Internet to help its customers succeed. Altogether, the Fujitsu Group has 188,000 employees and operations in over 100 countries.
Internet: http://www.fujitsu.com/

[About Sony Corporation]
Sony is a leading manufacturer of audio, video, game, communications and information technology products for the consumer and professional markets. With its music, pictures, computer entertainment and on-line businesses, Sony is uniquely positioned to be a leading broadband entertainment company. Sony recorded consolidated annual sales of more than $63 billion for the fiscal year ended March 31, 2000. Visit Sony on the Web at http://www.world.sony.com/
Press contacts:  
 Atsumi Kodama, Nancy Ikehara, Scott Ikeda
 Fujitsu Limited, Public Relations
 Tel. +81-3-3215-5259 (Tokyo)
 Fax. +81-3-3216-9365
 e-mail: pr@fujitsu.com
 Masami Kato
 Sony Corporation, Public Relations Department
 Tel. +81-3-5448-2200 (Tokyo)
 Fax. +81-3-5448-3061
 e-mail: mkato@ccom.sony.co.jp

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