Optical information reproducing device, optical information recording medium, cutting device and semiconductor laser light source
文献类型：专利
| 作者 | ONISHI KUNIKAZU; SATO YASUHIRO; KATASE YOSHIHIRO; MIURA MICHIO |
| 发表日期 | 1990-05-11 |
| 专利号 | JP1990123523A |
| 著作权人 | HITACHI LTD |
| 国家 | 日本 |
| 文献子类 | 发明申请 |
| 其他题名 | Optical information reproducing device, optical information recording medium, cutting device and semiconductor laser light source |
| 英文摘要 | PURPOSE:To improve recording density by forming several types of bits, in which the length-wise direction is different, on an optical disk, discriminating these bits at the time of reproduction and obtaining a signal. CONSTITUTION:On an optical disk 6, at least 3 types of a bit 30 in which in accordance with the recording signal of two multiplexed systems, a lengthwise direction is inclined approximately to + or -45 deg. and 0 deg. for a bit string are formed. Out of respective beams to reflect the disk 6, one side light flux to transmit a half mirror 4' is separated to a P deflecting component and an S deflecting component by a polarization beam splitter 3' and made incident on light detectors 8a and 8b respectively. The output signal from respective detectors 8a and 8b is reproduced through reproducing signal detecting circuits 60a and 60b provided in order to output the recording signal of two independent systems as a digital signal as recording signals A and B of two independent systems. Thus, since the information signal of plural independent systems can be multiplexed and recorded, the recording density can be improved. |
| 公开日期 | 1990-05-11 |
| 申请日期 | 1988-11-02 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/59591]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | HITACHI LTD |
| 推荐引用方式 GB/T 7714 | ONISHI KUNIKAZU,SATO YASUHIRO,KATASE YOSHIHIRO,et al. Optical information reproducing device, optical information recording medium, cutting device and semiconductor laser light source. JP1990123523A. 1990-05-11. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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