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Recording condition extracting system and method for dielectric recording medium and information record equipment

A technology of recording medium and recording conditions, which can be used in recording information storage, electrorecording, ferroelectric carrier recording, etc., and can solve problems such as insufficient stability

Inactive Publication Date: 2003-09-10
PIONEER CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The inventors of the present invention have used the above-mentioned SNDM for PZT film and LiTaO 3 Crystals form sub-μm microdomains, however, they are not stable enough
At the same time, few researchers have reported techniques for forming stable sub-μm micro-domains, which are suitable for recording and reproducing to dielectric materials at high recording densities under current conditions.

Method used

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  • Recording condition extracting system and method for dielectric recording medium and information record equipment
  • Recording condition extracting system and method for dielectric recording medium and information record equipment
  • Recording condition extracting system and method for dielectric recording medium and information record equipment

Examples

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Effect test

no. 1 example

[0075] refer to Figure 1 to Figure 7 A recording condition extraction system and method for a dielectric recording medium of the present invention will be described. figure 1 is a block diagram showing the structure of a recording condition extraction system for obtaining a recording condition of a dielectric recording medium. figure 2 It is a flowchart showing the operation flow of the recording condition extraction system. Figures 3A to 3D is a schematic diagram showing recording conditions of a dielectric recording medium, Figure 3A shows the formation of a polarized domain at the end of the probe, Figure 3B shows the case of further growth of the polarization domain, Figure 3C shows the situation where the polarized domain reaches the back of the recording medium and the polarized domain is fully formed, Figure 3D The intensity distribution of the electric field in the recording medium with the probe is shown. Figure 4 to Figure 6 is a measurement graph showin...

no. 2 example

[0111] Below, refer to Figure 8 and 9 Explain the allowable range of spot radii in terms of the smallest and stable polarized domain and the length of time the voltage is applied. This is useful for determining more stable polarized domain sizes and for achieving a set application time length while maintaining the limit of recording speed or recording density. in addition, Figure 8 is displayed when compared to e.g. Figure 5 Shown is a graph of the relationship between the spot radius and the voltage application time length when the optimum spot radius setting determines the allowable value. Figure 9 Yes Display when determining the allowable value relative to the best point radius setting figure 2 Flowchart of the operational flow of the recording condition extraction system shown.

[0112] Such as Figure 8 As shown, on the point radius of the polarized domain, according to the point P on which a stable and minimum point radius can be obtained 2 radius r 0 Allow...

no. 3 example

[0115] Next, the information recording apparatus of the present invention is explained, which is provided with setting means for setting the applied voltage and the length of application time extracted by the recording condition extraction system of the dielectric recording medium.

[0116] Such as Figure 10 As shown, the information recording device 3 is provided with: a dielectric recording medium 37 equipped with a dielectric substance 35 and an electrode 36; a probe 31; an electrode 51; an AC (alternating current) signal generator 52; a recording signal generator 53; setting means 11; application time length setting means 12; adder 54; oscillator 55; FM (frequency modulation) demodulator 56; signal detecting means 57; inductor L; inductor La; and capacitor Ca. Obviously, as an information recording device, it is equipped with various other general functions; however, it will not be described in detail.

[0117] The dielectric recording medium 37 is a medium for recording...

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Abstract

The record condition extraction system of a dielectric recording medium is intended to obtain an applied voltage and an applied time length to be recorded when recording information in the dielectric recording medium. The record condition extraction system is provided with: an applied voltage setting device; an applied time length setting device; a record control device; an applied voltage / applied time length record device; a record device; a dot radius measurement device; a dot radius record device; an optimum dot radius detection device; a record condition determination device; and an output device. The applied voltage setting device and the applied time length setting device set a voltage and a time applied to a probe of the record device, respectively. The dot radius of a polarization domain, which is recorded at the record device , is measured at the dot radius measurement device, and the optimum polarization domain is obtained at the optimum dot radius detection device. The applied voltage and the applied time length which have formed the polarization domain are extracted as an optimum record condition.

Description

technical field [0001] The present invention relates to a recording condition extraction system and a recording condition extraction method for obtaining an optimum recording condition of a dielectric recording medium that records information in micro-domains of a dielectric substance at a high density, the present invention Information recording equipment is also involved. Background technique [0002] Recently, various types of dielectric materials and piezoelectric materials have been developed, and they are mostly used in ultrasonic elements, optical elements, memories, and the like. In fact, methods have been developed to measure the remanent polarization distribution of dielectric materials and the local anisotropy of piezoelectric materials. Also, with this technique, another technique of recording information in a dielectric material and reproducing information has been developed. [0003] Generally, in order to observe the polarization do...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01Q60/24G01Q60/46G01Q80/00G01Q90/00G11B9/00G11B9/02G11B9/14G11B11/00G11B11/08
CPCG11B11/08G11B9/1472G11B9/02G11B11/007G11B9/14B82Y10/00
Inventor 长康雄尾上笃
Owner PIONEER CORP