发明公开
- 专利标题: Optical information recording and reproducing apparatus
- 专利标题(中): 光信息记录和再现设备
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申请号: EP92121962.2申请日: 1992-12-23
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公开(公告)号: EP0548981A3公开(公告)日: 1995-01-25
- 发明人: Noda, Kazuo , Kimura, Yasuyuki
- 申请人: NIPPON CONLUX CO., LTD.
- 申请人地址: 2-2, Uchisaiwai-Cho 2-chome Chiyoda-ku Tokyo-To JP
- 专利权人: NIPPON CONLUX CO., LTD.
- 当前专利权人: NIPPON CONLUX CO., LTD.
- 当前专利权人地址: 2-2, Uchisaiwai-Cho 2-chome Chiyoda-ku Tokyo-To JP
- 代理机构: Reichel, Wolfgang, Dipl.-Ing.
- 优先权: JP345466/91 19911226
- 主分类号: G11B19/04
- IPC分类号: G11B19/04 ; G11B7/00
摘要:
In an optical information recording and reproducing apparatus, the recording operation is interrupted when an information pit, dust, scratch, stain, etc. is present on an optical recording medium. However, the recording operation is resumed and kept continued when a dust, scratch, stain, etc. other than the information pit is present on the medium. The apparatus comprises a double recording detecting circuit for detecting a pseudo double recording signal generated by a dust, scratch, stain, etc. on the medium at a period of a recording operation; and a recording signal supply circuit for interrupting the recording operation when the double recording detecting circuit detects the pseudo double recording signal to switch the recording period to a monitor period, for maintaining the interruption of the recording operation when a real double recording signal generated by an information pit is detected at the monitor period, and for resuming the recording operation when the real double recording signal generated by an information pit is not detected at the monitor period. After the recording operation has been resumed and further when the pseudo double recording signal generated by a dust, scratch, stain, etc. still remaining on the medium is detected, the monitor and recording periods are repeated alternately. However, after the medium has become free from a dust, scratch, stain, etc. finally and therefore the real and pseudo double recording signals are not both generated, the recording operation is kept continued normally.
公开/授权文献
- EP0548981B1 Optical information recording and reproducing apparatus 公开/授权日:1998-03-18
信息查询
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