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Method and system regulating intervals of luminescent spot used for reading data media

A technology of information carrier and light spot, which is applied in the direction of optical recording/reproduction, arrangement of discrete information storage, information arrangement, etc., and can solve problems such as insufficient vibration

Inactive Publication Date: 2008-11-19
KONINK PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, due to the large number of moving parts in the drive, the known applications utilizing this type of memory device are not robust enough to shocks during the read operation, taking into account the stability required of said moving parts during the read operation
As a result, optical storage devices cannot be easily used in applications that are subject to shock, such as portable devices

Method used

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  • Method and system regulating intervals of luminescent spot used for reading data media
  • Method and system regulating intervals of luminescent spot used for reading data media
  • Method and system regulating intervals of luminescent spot used for reading data media

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Embodiment Construction

[0059] Thus, the present invention provides a structure by which the amount of mismatch between the pitch of the probes and the size of the macrocell (caused, for example, by thermal expansion or manufacturing problems) can be determined and the probe's pitch can be adjusted accordingly. pitch, so that the pitch p of the probe array matches the size of the macrocell, and ensures that the Figure 4 The data bits are read correctly during the macrocell scan operation described.

[0060] In the following, it should be realized that the focal point of the light source means the virtual image and not (necessarily) the light source itself.

[0061] According to an exemplary embodiment of the invention, it is proposed to generate a Moire pattern on the area of ​​the detector by arranging a periodic structure on the information carrier (or data card) for interfering with the probe array , to determine the amount of mismatch between the pitch of the probes and the size of the macrocel...

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Abstract

The invention relates to a method and system for adjusting the pitch of an array of light spots (103) in an information carrier reading apparatus so as to correspond with the size of the macro-cells in which data is stored. A degree of mismatch between the pitch of the array of light spots (103) and the size of the macro-cells is determined when the probe array generation device (102) is illuminated with an input light beam, and the pitch adjusted accordingly by adjusting the distance of the focus of the light source (12) so as to converge or diverge the input light beam (104) to the probe array generation device (102), thereby to create a non-collimated input light beam (104) and magnify the pitch of the array of light spots (103) accordingly.

Description

technical field [0001] The invention relates to a method and a system for adjusting the spacing of light spots for reading macrosingle elementary data of an information carrier. [0002] The invention can be applied in the field of optical data storage. Background technique [0003] Currently, optical storage devices are being widely used for content distribution, for example in storage systems based on the DVD (Digital Versatile Disc) standard. Optical storage devices have a great advantage over hard disks and solid state storage devices in that the information carrier can be easily and cheaply reproduced. [0004] However, due to the large number of moving parts in the drive, known applications utilizing this type of memory device are not robust against shocks during the reading operation, considering the stability required of said moving parts during the reading operation. Thus, optical storage devices cannot be easily used in applications that are subject to shock, suc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B7/0033G11B7/085G11B7/09G11B7/14G11B7/125
CPCG11B7/08547G11B7/0033G11B7/14G11B7/013G11B7/0938G11B7/085G11B7/09G11B7/126
Inventor L·P·巴克
Owner KONINK PHILIPS ELECTRONICS NV