发明申请
US20070165493A1 Method, apparatus and record carrier with average-runlength preserving code for improved readout parameter control
审中-公开
方法，装置和记录载体，具有平均游程长度保留码，用于改进读出参数控制
- 专利标题： Method, apparatus and record carrier with average-runlength preserving code for improved readout parameter control
- 专利标题（中）： 方法，装置和记录载体，具有平均游程长度保留码，用于改进读出参数控制
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申请号： US10596918申请日： 2005-01-05
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公开(公告)号： US20070165493A1公开(公告)日： 2007-07-19
- 发明人: Coen Verschuren , Willem Coene
- 申请人： Coen Verschuren , Willem Coene
- 申请人地址： NL EINDHOVEN
- 专利权人： KONINKLIJKE PHILIPS ELECTRONIC, N.V.
- 当前专利权人： KONINKLIJKE PHILIPS ELECTRONIC, N.V.
- 当前专利权人地址： NL EINDHOVEN
- 优先权： EP04100101.7 20040114
- 国际申请： PCT/IB05/50036 WO 20050105
- 主分类号： G11B11/00
- IPC分类号： G11B11/00
摘要：
The present invention relates to a method and apparatus for controlling at least one readout parameter of a magneto-optical domain expansion recording medium. An average detected runlength of the reading signal is monitored, and an error signal is generated on the basis of a comparison of the monitoring result with the predetermined average runlength that has been set during the encoding step. The at least one readout parameter is then controlled by means of the generated error signal. Furthermore, the present invention relates to a method, apparatus and record carrier wherein a runlength constraint is applied to at least one of the following quantities: mark regions and space regions in said storage layer, said runlength constraint being selected to keep an accumulated runlength deviation from a predetermined average runlength within a predetermined range. The proposed runlength property and control scheme provide the advantage that all detected runlengths contribute to the error signal to make the response must faster and to reduce readout errors.
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