Title :
Deep groove method on high density optical disk memory
Author :
Morita, S. ; Nishiyama, M. ; Furuta, M. ; Iida, H. ; Niwa, T.
Author_Institution :
Dept. of Optomechatronic Res. & Dev., Nikon Corp., Yokohama, Japan
Abstract :
Recently, standardization of the DVD-RAM and that of the 8/spl times/130 mm MO are about to be finalized. These standardizations are expected to accelerate the use of optical disks in the area of multi-media. To achieve higher density optical disks, it is necessary to narrow the track pitch without working at shorter wavelengths. This paper describes an optical disk in which data is recorded on both lands and grooves with a reduced track pitch and a deeper-than-usual groove, a technique we call the deep groove (DG) method.
Keywords :
magneto-optical recording; optical crosstalk; optical disc storage; optical fabrication; optical polymers; sputter etching; DVD-RAM; RIE mastering; cross-erase suppression; cross-talk power margin; data recording; deep groove method; high density optical disk memory; magnetooptical disks; multi-media; phase change optical disks; polycarbonate substrate; reduced track pitch; stampers; standardization; track pitch narrowing; Disk recording; Fluctuations; Injection molding; Noise robustness; Optical crosstalk; Optical recording;
Conference_Titel :
Optical Data Storage Topical Meeting, 1997. ODS. Conference Digest
Conference_Location :
Tucson, AZ, USA
Print_ISBN :
0-7803-3885-5
DOI :
10.1109/ODS.1997.606137
