发明名称 |
OPTICAL DISK AND METHODS FOR RECORDING AND REPRODUCING ESSENCIAL INFORMATION OF OPTICAL DISC |
摘要 |
An optical disc and methods for recording essential information in and reproducing essential information from an optical disc are provided. The optical disc includes as a pattern of crystalline and amorphous marks storing essential information. The essential information recording method involves: heating an amorphous recording layer above the temperature of crystallization by radiating a beam according to a photoelectrically converted signal; and slowly cooling t he heated recording layer to the temperature of crystallization or below to for m a pattern of crystalline and amorphous marks. The essential information reproducing method involves: radiating a beam onto a pattern of crystalline and amorphous marks in which essential information of the optical disc is recorded; receiving the beam reflected from the pattern of crystalline and amorphous marks and photoelectrically converting the received beam to detect a signal; filtering the detected sign al through a high-pass filter; and reproducing the essential information of the optical disc from the filtered signal. Essential information can be recorded in a recordable optical disc by phase change using an existing disc initializing apparatus after deposition of a recording layer and before initialization of the optical disc. Therefore, an additional recording apparatus and process is not necessary, and no damage caused by a high energy of laser occurs in the optical disc.
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申请公布号 |
CA2397132(A1) |
申请公布日期 |
2003.02.09 |
申请号 |
CA20022397132 |
申请日期 |
2002.08.08 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
YOON, DU-SEOP;PARK, IN-SIK;LEE, KYUNG-GEUN |
分类号 |
G11B7/24;G11B7/00;G11B7/004;G11B7/0045;G11B7/005;G11B7/007;G11B7/242;G11B20/10;G11B23/30;(IPC1-7):G11B7/24;G11B7/003 |
主分类号 |
G11B7/24 |
代理机构 |
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