CN100385519C - Method for making recordable compact disc and master mask thereof - Google Patents
Method for making recordable compact disc and master mask thereof Download PDFInfo
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- CN100385519C CN100385519C CNB2004100039737A CN200410003973A CN100385519C CN 100385519 C CN100385519 C CN 100385519C CN B2004100039737 A CNB2004100039737 A CN B2004100039737A CN 200410003973 A CN200410003973 A CN 200410003973A CN 100385519 C CN100385519 C CN 100385519C
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- moment
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- ditch rail
- swing
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Abstract
The present invention relates to a method for making a recordable compact disc and the master mask thereof. The recordable compact disc comprises a base disc; a helical groove track arranged on the base disc presents a swinging state in fixed periods. The present invention is characterized in that the helical groove track is provided with a plurality of transient deflective swing areas not in swinging periods as the record areas of addressing data. In the method for making the master mask of the compact disc, the helical groove track is etched on the base disc of the master mask by an etching source in a swinging mode in fixed periods, wherein a non periodic transient swing is interpenetrated among a plurality of swinging periods in the swinging mode of the etching source so as to form the helical groove track with transient deflective swing on the base disc of the master mask. Therefore, the present invention can greatly raise the stability of the making process of the master mask and realize the effect of reducing the data error rate of the compact disc.
Description
Technical field
The present invention is relevant a kind of CD-RW discsCD-RW, particularly about the method for making of a kind of recordable CD sheet and mother matrix thereof.
Background technology
The read-write of disk is to adopt angle constant speed (Constant Angular Velocity) mode, the rotating speed that is disk drive keeps constant, data write speed then has the speed difference, and data are that paragraph ground distributes, and is higher in disk outer rim magnetic region density partly.Be different from the read-write mode that magnetic record medium adopts the angle constant speed, recordable CD and general die casting CD-RW discsCD-RW then are to adopt linear constant speed (Constant Linear Velocity) mode to record or reading signal, do not concern the position of signal on laser disc and have.That is data signals is adjacent and link up in regular turn with identical density when recording, and the rotating speed of CD-RW discsCD-RW is to change according to the position of read/write head, and when read/write head during the closer to the CD-RW discsCD-RW outer rim, then the CD-RW discsCD-RW rotating speed is gradually slow.For reaching this purpose, recording track (Tracking) and time (Timing) data in advance on CD-RW discsCD-RW are outwards advanced in proper order with the laser beam of direct light disc player, and are correctly controlled the rotating speed of CD-ROM device.
The structure of known CD-RW discsCD-RW comprises a substrate, be provided with a simple swing ditch rail (Wobble Groove) outside its center screw, carving on the substrate, as shown in Figure 1, form the alternate aspect of ditch rail (Groove) 10 and plane (Land) 12 and then on substrate.This pre-swing ditch rail of carving is for having the periodic wobble person of characteristic frequency, with provide follow rail and time data come in the guide lights disc player laser beam step by step, and make the recordable CD machine keep constant burning speed according to this characteristic frequency.Following rail and the time data except being provided with on the CD-RW discsCD-RW, also must carve in advance and establish (record) address date.The rule of doing of the known data of recording address in advance is ad-hoc locations on smooth plane 12, with pre-quarter mode etch many pittings (Pit) 14, to utilize the address date of pitting 14 record video discs.
CD-RW discsCD-RW normally penetrates die cast with a mother matrix and comes massive duplication production, and its mother matrix then is to carve above-mentioned swing ditch rail with laser beam.Yet, because the pre-pitting of carving 14 is to be positioned on the plane 12 and with ditch rail 10 high low head to be arranged, not only when scribing mother matrix, the focal position of wayward laser and beam size and the position, size and the shape that cause pitting 14 be deviation to some extent, make mother matrix scribe the manufacturing process instability: relatively, the CD-RW discsCD-RW of ejection formation output, its address signal intensity will be different because of the error of carving pitting in advance, and CD-ROM device easily causes interference when reading the ditch rail data of CD-RW discsCD-RW.
In addition, prior art also has the hunting frequency utilizing the frequency modulating mode and change the ditch rail or with fixing hunting frequency and the modulation phase place, and then reach the purpose of recording address data, yet this two way all needs the accurately focal position and the beam size of control laser because of frequency or phase modulation, is difficult for and scribes the unsettled shortcoming of manufacturing process and still have mastering.
Therefore, The present invention be directed to above-mentioned puzzlement, propose a kind of recordable CD sheet that the address signal district is set in pre-ditch rail.
Summary of the invention
Fundamental purpose of the present invention, provide a kind of recordable CD sheet and mastering method thereof, by disposing plural number moment beat district with recording areas as address date by spiral goove rail in swing, can finish scribing of laser disc mother matrix with single laser beam, with known difficulty focusing of effective solution and address date position offset problem, and then significantly promote the degree of stability of mastering process.
Another object of the present invention, be that a kind of address date interrecord structure of recordable CD sheet is being provided, moment beat district recording address data by by the ditch rail reduce the CD-RW discsCD-RW data error rate effectively, to improve the known high problem of data error rate that pre-quarter, the pitting error was caused.
For achieving the above object, a kind of recordable CD sheet provided by the invention, it is to comprise a substrate, on this substrate, be provided with a spiral fashion ditch rail, and this ditch rail is to be connected to form and presented fixed cycle swing by plural libron rail, this spiral fashion ditch rail is provided with the moment beat district of plural non-hunting period, this moment the beat district be utilize moment this spiral fashion ditch rail of deviation center line mode and form, with recording areas as address date.
Described recordable CD sheet, wherein, be with a plurality of these libron rails be unit be provided with at least one should moment the beat district.
Described recordable CD sheet, wherein, be with 16 these libron rails be unit be provided with at least one should moment the beat district.
For achieving the above object, the mastering method of a kind of recordable CD sheet provided by the invention comprises the following steps: to provide a substrate; Making an etching source outwards carry out the ditch rail with spiral fashion in the mode of fixed cycle swing from the center of this substrate establishes quarter, wherein the swing mode in this etching source is should be interspersed with an aperiodic moment swing between the cycle in a plurality of, and then on this substrate, form a spiral fashion ditch rail with beat district of plural moment, so that this substrate is as the employed mother matrix of subsequent duplicate CD-RW discsCD-RW.
The mastering method of described recordable CD sheet, wherein, this etching source is a laser.
The mastering method of described recordable CD sheet wherein, is to carve continuously to establish with single laser beam to form this spiral fashion ditch rail.
The mastering method of described recordable CD sheet wherein, is to utilize moment this laser beam of deviation and form this beat district moment.
The mastering method of described recordable CD sheet, wherein, the mode that forms this beat district moment be with moment this spiral fashion ditch rail of deviation center line and form.
The mastering method of described recordable CD sheet, this substrate are glass material.
In sum, the method for making of a kind of recordable CD sheet of the present invention mother matrix, it is when scribing spiral fashion ditch rail on the mother matrix, produces the address date recording areas simultaneously on the ditch rail, so have the high and advantage that make easily of mother matrix yield.
On be set forth in swing ditch rail and moment beat district be set in the mode of recording address data, because only needing needs the mode marking of the position of address record with the moment beat at the ditch rail, event can be carved continuously on the ditch rail with single laser beam and be established, and then when scribing this spiral fashion ditch rail, produce the address date recording areas simultaneously.So the present invention uses single laser beam can carry out scribing of laser disc mother matrix, not only can solve the problem that known laser focusing is difficult for reaching offset, and then the degree of stability of the manufacturing process of cutting blocks for printing is significantly promoted, more can make and utilize the duplicated CD-RW discsCD-RW of this mother matrix to have lower data error rate.
Description of drawings
Fig. 1 is the structure of known CD-RW discsCD-RW;
Fig. 2 is the local enlarged diagram of CD-RW discsCD-RW of the present invention;
Fig. 3 is the making process flow diagram of mother matrix of the present invention.
Embodiment
By cooperate appended graphic explanation in detail by specific embodiment, when the effect that is easier to understand purpose of the present invention, technology contents, characteristics and is reached.
Must carve in advance to establish on the recordable CD sheet and follow rail and time data, outwards be advanced in proper order by the video disc center with the laser beam of direct light disc player, this effect is by being reached by the swing ditch rail at pre-quarter; In addition, on CD-RW discsCD-RW, also must carve in advance and establish address date.The present invention promptly by by moment deviation should swing ditch rail center line, have the swing ditch rail in moment beat district with generation, and then with moment beat district recording address data.
Recordable CD sheet of the present invention as shown in Figure 2, it is local enlarged diagram for a CD-RW discsCD-RW, this CD-RW discsCD-RW comprises a circular substrate 20, on substrate 20, be provided with a shallow spiral fashion ditch rail outer quarter from mind-set wherein, and then on substrate 20, form the alternate aspect of ditch rail (Groove) 22 and plane (Land) 24, and spiral fashion ditch rail is to be connected to form by a plurality of libron rails 26, and make spiral fashion ditch rail present the kenel (swing of ditch rail 22 is in not shown) of fixed cycle swing: wherein, on 26 on these libron rails is to intert the moment beat district 28 be provided with plural non-hunting period, it is to form with moment deviation ditch rail 22 center line Gc, to utilize moment beat district 28 as the recording areas of address date.
The sub-rail 26 of periodic wobble on the spiral fashion ditch rail and moment beat district 28 configuration relation be can be according to design requirement Flexible Design, in detail, be for unit beat district 28 in a flash to be set by several libron rails 26, for example with DVD-R/RW, be with 16 libron rails 26 be unit be provided with one to three moment beat district 28.That is, every 16 libron rails 26, promptly be provided with one to three moment beat district 28 as the address recording areas.
An above-mentioned CD-RW discsCD-RW normally mother matrix penetrates die cast and comes massive duplication production, and mother matrix then is to utilize the laser etching machine to scribe.Please join shown in Figure 3, the mastering method of recordable CD sheet of the present invention is to comprise following two steps: a substrate at first is provided shown in step S10, the preferably is a glass substrate: then carry out step S12, utilize the laser beam of setting with formula in advance to etch a shallow spiral fashion ditch rail at this substrate surface, this moment, laser beam was to establish the quarter that the mode of fixing hunting period is outwards carried out the ditch rail with spiral fashion from the center of this substrate, and the swing mode of laser beam is to be interspersed with an aperiodic moment swing between a plurality of hunting periods, in other words, utilize formula to set and make this laser beam when the periodic wobble walking, produce the moment deviation simultaneously, and then on substrate, carve a spiral fashion ditch rail with moment beat district, so promptly finish scribing of a laser disc mother matrix.
Wherein, the method that makes laser moment deviation is in an external electric crystal DLC (digital logic circuit) (the transistor transistor logic of laser etching machine, TTL), (ElectronicOptical Denector EOD) reaches the effect that makes laser moment beat via the electric light deflector.
Finishing when the laser disc mastering, can utilize this mother matrix massive duplication laser disc, generally is that to close carbonate material with the crowd be material, and comes the production CD-RW discsCD-RW to penetrate the die cast mode.After steps such as raw material ejaculation, die casting, cooling, hardened forming, get final product the output CD-RW discsCD-RW, the microstructure of this CD-RW discsCD-RW then is an aspect as shown in Figure 2.
For verifying effect of the present invention, below specially carry out the test of address signal intensity and data error rate with the present invention and the prepared laser disc of the pre-lithography of well known address, its test result is shown in following table one:
Table one
| Standard specification | Pitting is carved on known plane in advance | Moment swing ditch rail of the present invention | |
| Address signal intensity | 0.18～0.28 | 0.18～0.28 (deciding) according to shape | 0.18～0.28 (deciding) according to shape |
| Data error rate | ＜1*10 -3 | 0.2～3*10 -3(instability) | ＜1*10 -4(stablizing) |
Wherein address signal intensity is [address location signal strength]/[reflectivity], and unit is mv/mv, does not therefore have unit.By test result as can be known, address signal intensity of the present invention is not because of the change mode variation of cutting blocks for printing.In addition, the general all wrong correction mechanism of numerical data, data error rate (PI error rate) is meant the error rate before error recovery, if it is at 1*10
-3In, the data error rate of then reading in fact at last will level off to 0; By test result as can be known, the present invention can be with data error rate by 10 of prior art
-3Be promoted to 10
-4So, have than stable data and read and write.
The above is by characteristics of the present invention are described by embodiment, its purpose makes the people who has the knack of this technology can understand content of the present invention and is implementing according to this, and non-limiting claim of the present invention, so, all other do not break away from equivalence modification or the modification that disclosed spirit is finished, and must be included in the claim.
Claims (7)
1. recordable CD sheet, it is to comprise a substrate, on this substrate, be provided with a spiral fashion ditch rail, and this ditch rail is to be connected to form and presented fixed cycle swing by plural libron rail, it is characterized in that: this spiral fashion ditch rail is provided with the moment beat district of plural non-hunting period, this moment the beat district be utilize moment this spiral fashion ditch rail of deviation center line mode and form, with recording areas as address date.
2. recordable CD sheet according to claim 1 is characterized in that: wherein, be with a plurality of these libron rails be unit be provided with at least one should moment the beat district.
3. recordable CD sheet according to claim 2 is characterized in that: wherein, be with 16 these libron rails be unit be provided with at least one should moment the beat district.
4. the mastering method of a recordable CD sheet is characterized in that: comprise the following steps:
One substrate is provided;
Making an etching source outwards carry out the ditch rail with spiral fashion in the mode of fixed cycle swing from the center of this substrate establishes quarter, wherein the swing mode in this etching source is should be interspersed with an aperiodic moment swing between the cycle in a plurality of, this moment the beat district mode be with moment this spiral fashion ditch rail of deviation center line and form, and then on this substrate, form a spiral fashion ditch rail with beat district of plural moment, so that this substrate is as the employed mother matrix of subsequent duplicate CD-RW discsCD-RW.
5. the mastering method of recordable CD sheet according to claim 4 is characterized in that: wherein, this etching source is a laser.
6. the mastering method of recordable CD sheet according to claim 4 is characterized in that: wherein, be to carve continuously to establish with single laser beam to form this spiral fashion ditch rail.
7. the mastering method of recordable CD sheet according to claim 4 is characterized in that: this substrate is a glass material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100039737A CN100385519C (en) | 2004-02-12 | 2004-02-12 | Method for making recordable compact disc and master mask thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100039737A CN100385519C (en) | 2004-02-12 | 2004-02-12 | Method for making recordable compact disc and master mask thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1655251A CN1655251A (en) | 2005-08-17 |
| CN100385519C true CN100385519C (en) | 2008-04-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100039737A Expired - Fee Related CN100385519C (en) | 2004-02-12 | 2004-02-12 | Method for making recordable compact disc and master mask thereof |
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| Country | Link |
|---|---|
| CN (1) | CN100385519C (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000306243A (en) * | 1999-04-19 | 2000-11-02 | Victor Co Of Japan Ltd | Optical disk |
| JP2001034950A (en) * | 1996-09-26 | 2001-02-09 | Sanyo Electric Co Ltd | Optical disc and optical disc recording playback apparatus |
| CN1346489A (en) * | 1999-12-15 | 2002-04-24 | 皇家菲利浦电子有限公司 | Optical record carrier and scanning device |
| CN1423811A (en) * | 2000-01-14 | 2003-06-11 | 松下电器产业株式会社 | Optical disk and optical disk address reading device and method |
-
2004
- 2004-02-12 CN CNB2004100039737A patent/CN100385519C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001034950A (en) * | 1996-09-26 | 2001-02-09 | Sanyo Electric Co Ltd | Optical disc and optical disc recording playback apparatus |
| JP2000306243A (en) * | 1999-04-19 | 2000-11-02 | Victor Co Of Japan Ltd | Optical disk |
| CN1346489A (en) * | 1999-12-15 | 2002-04-24 | 皇家菲利浦电子有限公司 | Optical record carrier and scanning device |
| CN1423811A (en) * | 2000-01-14 | 2003-06-11 | 松下电器产业株式会社 | Optical disk and optical disk address reading device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1655251A (en) | 2005-08-17 |
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Granted publication date: 20080430 Termination date: 20110212 |