Multi-order recordable CD of run-length limiting and making method thereof

A run-length, optical disc technology, used in magnetic recording, data recording, optical record carriers, etc., can solve problems such as inter-symbol crosstalk affecting sequences, achieve large compatibility, increase storage capacity and data transmission rate, and reduce order. desired effect
CN1687991AInactive Publication Date: 2005-10-26TSINGHUA UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
TSINGHUA UNIV
Publication Date
2005-10-26
Estimated Expiration
Not applicable · inactive patent

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Abstract

1A multi-stage record disk with limited travel lengths and its manufacturing method characterizes that the width of the recording symbol on said multi-stage record disk is multi-stage and decided by recorded laser power, at the same time, the travel length is limited, there are d 'o' at the least and k 'o' at the most between two non-o data, parameters d, k decide the smallest and largest travel lengths possibly appearing in the channel series determined by the exposing time for caving and recording lasers. A manufacture method is disclosed including multi-stage addition record disk of dye material or multi-stage duped disk of phase change or magneto-optic material, which obviously increases the storage volume of record disks and data transmission rate.
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Description

technical field

[0001] A multi-stage recordable optical disc with limited run length and its manufacturing method belong to the technical field of recordable optical discs. Background technique

[0002] Existing digital disc products convert information into binary numbers, and correspond the binary data to two different physical states of the record symbols of the storage medium in a certain modulation method to realize data storage. This type of storage method is called binary storage. The current recordable disc storage technology adopts the binary storage method, and judges whether the current corresponding position is "mark" (Mark) or "space" (Space) according to the magnitude of the reflected light intensity. Two state numbers can be recorded on the unit, that is, exactly one bit (bit) of information (1 at the signal transition and 0 at other positions).

[0003] Multi-level storage technology is proposed relative to binary storage. If the data stream is modulated i...

Claims

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