Title:
【発明の名称】光ディスクおよびその信号記録装置ならびに信号再生装置
Document Type and Number:
Japanese Patent JP2786810
Kind Code:
B2
Abstract:
A recording medium having a SYNC (synchronous code) for synchronizing with data and a DCC (DC cancel code) for suppressing a DC component of a wave form of a signal recorded on the recording medium, the SYNC and the CDD being adjacently recorded on the recording medium. Both the SYNC and DCC are patterns that are not present in a data portion. A signal recording apparatus, comprising a DSV calculating means for calculating a DSV of a signal wave form recorded on the recording medium, a cancel code generating means for generating a cancel code for suppressing a DC component of the signal wave form corresponding to the DSV calculated by the DSV calculating means, and a recording means for connecting a synchronous code and record data to the cancel code generated by the cancel code generating means and recording the cancel code, the synchronous code, and the record data on the recording medium so that the cancel code and the synchronous code are adjacently disposed, the synchronous code being adapted for synchronizing with data. A signal reproducing apparatus, comprising a reading means for reading the signal from the recording medium, and a synchronous code detecting means for detecting a predetermined pattern contained in a continuous pattern of the synchronous code and the cancel code as a significant synchronous code for synchronizing with data from the signal read by the reading means.
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Inventors:
NABESHIMA DAIKI
OZAKI NAOKI
OZAKI NAOKI
Application Number:
JP4601094A
Publication Date:
August 13, 1998
Filing Date:
March 16, 1994
Export Citation:
Assignee:
TOSHIBA KK
TOSHIBA EE BUI II KK
TOSHIBA EE BUI II KK
International Classes:
G11B20/12; G11B7/00; G11B7/004; G11B7/007; G11B20/14; G11B27/30; H03M5/14; (IPC1-7): G11B20/12; G11B20/14
Domestic Patent References:
| JP4339362A | ||||
| JP1319178A | ||||
| JP1151334A | ||||
| JP61261873A |
Attorney, Agent or Firm:
Suyama Saichi