July 7, 2008
Pioneer Develops World’s First 16-Layer Optical Disc; Big Step Toward Future Large-Capacity Archive System
Tokyo, July 7, 2008 - (JCN Newswire) - Pioneer Corporation has succeeded in developing a 16-layer read-only optical disc with a capacity of 400 gigabytes for the first time in the world*. Its per- layer capacity is 25 gigabytes, which is the same as that of a Blu- ray Disc (BD). This multilayer technology will also be applicable to multilayer recordable discs. This development has bolstered Pioneer's confidence in the feasibility of a large-capacity optical disc, which is expected to become necessary in the near future.
For multilayer optical discs, it has been difficult to obtain clear signals from each recording layer in a stable manner due to crosstalk from adjacent layers and transmission loss. Utilizing the optical disc production technology that it has developed in the DVD field, Pioneer solved these problems by, among other things, using a disc structure that can reduce crosstalk from adjacent layers, resulting in a 16-layer optical disc that can playback high-quality signals from every layer.
The 16-layer optical disc technology, capable of storing much more data than the conventional discs on one disc, will greatly reduce the number of discs to be used and therefore contribute to the conservation of resources.
Pioneer will present the details of this research at the International Symposium on Optical Memory and Optical Data Storage 2008 (ISOM/ODS2008) to be held in Hawaii from July 13.
* According to Pioneer survey, as of July 7, 2008.
** NA: The higher numerical aperture of the objective lens, the smaller diameter of the beam spot focused on a disc surface.
About Pioneer Corporation
Pioneer Corporation, headquartered in Tokyo, is a leading global manufacturer of consumerand business-use electronics products such as audio, video and car electronics. Its shares are traded on the Tokyo Stock Exchange (TSE: 6773). For more information , please visit http://pioneer.jp .
Pioneer Corporation, Tokyo, Japan Phone: +81-3-3495-9885 E-mail: [email protected] Website: http://pioneer.jp/e/
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