CN1457052A - Small-size compact disc for data memory and access - Google Patents
Small-size compact disc for data memory and access Download PDFInfo
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- CN1457052A CN1457052A CN 03137736 CN03137736A CN1457052A CN 1457052 A CN1457052 A CN 1457052A CN 03137736 CN03137736 CN 03137736 CN 03137736 A CN03137736 A CN 03137736A CN 1457052 A CN1457052 A CN 1457052A
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- small size
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/24003—Shapes of record carriers other than disc shape
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- Optical Recording Or Reproduction (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
Abstract
The small size of optical disc comprises positioning hole, base layer, covering layer and information recording layer, of which the position hole is located at rotary centre of the optical disc as well as base layer, information recording layer and covering layer are laminated in sequence to each other. The optical disc diameter is 5mm-76mm and the positioning hole diameter is 0.1mm-15mm. The optical disc thickness is 0.2mm-1.3mm, of which the covering layer thickness is 0.01mm-1.0mm. The small size optical disc having area smaller than the normal one has potential ability to store more information and it can be a read only disc, write once disc or erase many times disc for data storing and fetching.
Description
Technical field the present invention relates to a kind of small size CD that is used for data storage and reads, and belongs to the high-density digital field of optical storage technology, particularly the portable light memory technology.
The background technology optical disc storage is one of main means of high density information storage.Compare with conventional storage media such as disk, tapes, CD has that memory capacity is big, cost of manufacture is low, be not afraid of magnetic and heat, long, replaceable, easy distribution of life-span, advantage such as not fragile.The data of video disc recording can be preserved decades, therefore can replace floppy disk to do the software storage, replace tape to make long preservation of document and data or the like.And high-density recordable optical disc and the appearance that can wipe re-write optical disk storage have enlarged the range of application of CD storage technique especially, can replace flexible plastic disc and tape at aspects such as exchange, publication, distribution, demonstration, record, files comprehensively.
In recent years along with the fast development of correlation techniques such as information industry, multimedia technology, electronics, Precision Machining, to the capacity of CD, volume with portablely proposed more and more higher requirement.The capacity of the single face DVD-R CD of 120mm has reached 4.7GB now, can satisfy the capacity requirement of general data storage basically.And according to the international standard of existing various optical disc storage, no matter no matter is CD CD or DVD CD, be the CD of 120mm diameter or the CD of 80mm diameter, to a certain extent, because its size is bigger, so and be not suitable for as a kind of portable mobile storage.
Optical disk with existing common size is an example, as shown in Figure 1, for any existing 80mm optical disk, can see that CD is made up of basalis 6, Information Level (mainly being made up of zone of transition 2, Lead-In Area 3, data field 4, leading-out zone 5 etc.), overlayer 7.In the Information Level of CD, from the center of disc to diameter 44mm, according to different effects, can be divided into several regions, comprise center pit 1 (diameter is 15mm) and zone of transition 2, wherein, zone of transition comprises: and first zone of transition (diameter 15mm～16mm), second zone of transition (diameter 16mm～22mm), clamp area (diameter 22mm～33mm), the 3rd zone of transition (diameter 33mm～44mm).Finishing (diameter 44mm) outward flange (diameter 77mm) to optical disk from the 3rd zone of transition, is the block of information of CD.And according to different effects, the block of information of CD also is divided into three zones further, i.e. Lead-In Area 3 (diameter 44.6mm～48mm), data field 4 (diameter 48mm～76mm) and leading-out zone 5 (diameter 76mm～77mm).Essential record has control information, published information, content of copyright of CD or the like in Lead-In Area; In the data field, can store and write down various user data; Leading-out zone is the zone that guarantees that CD can continuously smooth ground sense data.Outermost edge from the leading-out zone to the CD (diameter 80mm) then is not considered as data storage or other purposes.
As can be seen from Figure 1, traditional large scale CD is not owing to considering whether disc is applicable to the problem of portable set, so disc size is excessive.In optical disc product of new generation and other consumption electronic products, no matter how the volume of hardware product is done enough for a short time, add the large scale CD after, the overall dimensions of product is still bigger, therefore can't satisfy portable requirement.
Summary of the invention the objective of the invention is to propose a kind of small size CD that is used for data storage and reads, by reducing the mechanical dimension of optical disk, give full play to the portability of CD, reduce the cost of CD, thereby improve the application and the effect of CD, to satisfy the requirement of user to portable storage.
The small size CD that is used for data storage and reads that the present invention proposes, comprise pilot hole, basalis, overcoat and information recording layer, pilot hole is located at the rotation center of CD, basalis, information recording layer and overcoat overlap together successively mutually, the diameter of CD is 5mm～76mm, and the diameter of pilot hole is 0.1mm～15mm.
The thickness of above-mentioned small size CD can be 0.2mm～1.3mm, and wherein the thickness of overcoat can be 0.01mm～1.0mm.
The information recording layer of above-mentioned small size CD is followed successively by zone of transition, Lead-In Area, data field and leading-out zone from pilot hole to garden week, perhaps information recording layer is followed successively by Lead-In Area, data field and leading-out zone from pilot hole to garden week, can also week all is the data field from pilot hole to the garden.
The circular information track or the spirality information track of closely arranging is carved with in above-mentioned small size optical disc data district.
Above-mentioned small size CD can also comprise ornamental area, and ornamental area is located at the CD periphery, and ornamental area can be square, circle or other any geometric configuration.
The small size CD that is used for data storage and reads that the present invention proposes, the diameter dimension of valid data memory block wherein is between 5mm～76mm, but can be read-only optical disc CD-WORM, the CD that is used for data storage and reads such as rewritable disk repeatedly, pick up/pen recorder or other information pickup/recording mechanisms applicable to the optical information of normal optical disk driver.
Because this novel small size CD that is used for data storage and reads that the present invention proposes, has more small area than normal optical disk, therefore have enough storage development potentialities, can be applied to the various products that other need external storage, for example, can be applicable to other individual digital portable consumer electronic products, as walkman, see with oneself, E-Book, mobile phone, PDA, notebook, number/camera or the like, become these product high-efficiency reliable external memory means, thereby occupy more wide consumer electronics market.
Description of drawings
Fig. 1 is the profile diagrammatic cross-section of existing normal optical disk.
Fig. 2 is the profile diagrammatic cross-section of the small size CD that designs of the present invention.
Fig. 3～Fig. 8 is an embodiment of the invention structural representation.
Among Fig. 1～Fig. 8, the 1st, pilot hole, the 2nd, zone of transition, the 3rd, Lead-In Area, the 4th, data field, the 5th, leading-out zone, the 6th, basalis, the 7th, overcoat, the 8th, concentric circular tracks, the 9th, spiral tracks, the 10th, the ornamental area in the disc, the 11st, the block of information in the disc, H1 is tectal thickness, H2 is the gross thickness of disc, and D1 is the diameter of pilot hole, and D2 is the external diameter of disc.
Embodiment
The small size CD that is used for data storage and reads of the present invention's design, its structure as shown in Figure 2, comprise pilot hole 1, basalis 6, overcoat 7 and information recording layer, described pilot hole 1 is located at the rotation center of CD, basalis 6, middle information recording layer and overcoat 7 overlap together successively mutually, the diameter of CD is that D2 can be 5mm～76mm, and the diameter D1 of pilot hole 1 can be 0.1mm～15mm.
The thickness H2 of above-mentioned CD can be 0.2mm～1.3mm, and the tectal thickness H1 of CD can be 0.01mm～1.0mm.
Above-mentioned small size CD, information recording layer from pilot hole 1 to being followed successively by zone of transition 2, Lead-In Area 3, data field 4 and leading-out zone 5 garden week, as shown in Figure 2.Information recording layer also can be from pilot hole 1 to being followed successively by Lead-In Area 3, data field 4 and leading-out zone 5 garden week, as shown in Figure 3.Information recording layer can also week all be data field 4 from pilot hole 1 to the garden, as shown in Figure 4.
Above-mentioned small size CD, data field wherein are carved with the circular information track 8 of closely arranging, and as shown in Figure 5, also can be carved with the spirality information track, as shown in Figure 6.
Above-mentioned small size CD can also comprise ornamental area 10, and described ornamental area 10 is located at the periphery of CD, and ornamental area can be square, as shown in Figure 7; Also can be circle, or other any geometric configuration, be illustrated in figure 8 as heart.
As shown in Figure 2, the optical disk of outside dimension between 5mm～76mm for the present invention's proposition, center from disc, the same with normal optical disk shown in Figure 1, according to different effects, several regions be can be divided into, center pit 1, zone of transition 2 (forming) comprised by first zone of transition, second zone of transition, clamp area, the 3rd zone of transition etc.Equally, finishing to the outward flange of optical disk from the 3rd zone of transition is the block of information of CD.And according to different effects, the block of information of CD also is divided into three zones further, i.e. Lead-In Area 3, data field 4 and leading-out zone 5.Essential record has control information, published information, content of copyright of CD or the like in Lead-In Area; In the data field, can store and write down various user data; Leading-out zone is the zone that guarantees that CD can continuously smooth ground sense data.Outermost edge from the leading-out zone to the CD then is not considered as data storage or other purposes.
According to the optical disk of different size, above-mentioned various sizes can be different.For example, for external diameter is the CD of 60mm, can set diameter 15mm, the diameter 15mm～16mm of first zone of transition, diameter 16mm～22mm, the diameter 22mm～33mm of clamp area of second zone of transition, diameter 33mm～44mm, the diameter 44.6mm～48mm of Lead-In Area of the 3rd zone of transition, the diameter 48mm～56mm of data field, the diameter 56mm～57mm of leading-out zone of center pit.
Obviously, as above carry out CD that size sets and be applicable to that existing any CD drive carries out the information record and reproduce.Yet consider that carrying out size like this is set with and may makes that the capacity of disc is not enough, especially after the external diameter of CD is less than 44mm, the active data storage area will not exist in the CD, and therefore, the present invention points out that the various disc size of the small size CD that proposed can change.For example, for external diameter is the CD of 44mm, can set diameter 5mm, the diameter 5mm～6mm of first zone of transition, diameter 6mm～8mm, the diameter 8mm～10mm of clamp area of second zone of transition, diameter 10mm～11mm, the diameter 11mm～12mm of Lead-In Area of the 3rd zone of transition, the diameter 13mm～41mm of data field, the diameter 41mm～42mm of leading-out zone of center pit.
Wherein, first zone of transition, second zone of transition, the 3rd zone of transition can not have according to different requirements yet; For some CD read/pen recorder for, the size of center pit and clamp area also can be very little; For some CD read/pen recorder for, the optical disc information district also can no longer divide Lead-In Area, data field and leading-out zone.Like this, originally whole spaces in the optical disc information district that is made up of Lead-In Area, data field and leading-out zone can be as the active data memory block, in order to store and to write down various user data.And the outermost edge from the block of information to the CD is not considered as data storage yet equally, but can be used as other purposes, as fixing and clamping or the like of disc.
Therefore, for the novel small size CD that the present invention proposes,, can improve the memory capacity of disc to a certain extent owing to the variability of disc structure.For example, be the CD of 44mm for external diameter, if set diameter 5mm, the diameter 5mm～6mm of zone of transition, the diameter 8mm～7mm of clamp area, the diameter 7mm～42mm of data field of center pit.If this CD adopts CD disc standard in the microphysics structure, then the capacity of 44mm small size CD CD can reach 120MB; If this CD adopts DVD disc standard in the microphysics structure, then the capacity of 44mm small size DVD CD can reach 870GB.
Comparison diagram 1 and Fig. 2 as seen, small size CD proposed by the invention is littler than normal optical disk, its portability improves greatly.Under certain conditions, the small size CD can also have the variation of disc structure, to be applicable to new data read and record requirement.
According to different applications, the disc thickness of this small size CD that the present invention proposes can be between 0.2mm～3mm, for example 1.2mm; The outside dimension of disc between 5mm～76mm, 70mm for example; Tectal thickness between 0.01mm～1.3mm, 0.6mm for example.
Because the embodiment of small size CD has basalis illustrated in fig. 2, Information Level and tectal structure, therefore in described embodiment, no longer specify below.
Fig. 3 is one embodiment of the present of invention, is leading-out zone 5 in the outermost edge of CD, is Lead-In Area 3 at the inner ring of CD, is data field 4 between Lead-In Area and the leading-out zone, and data write or read to outermost from inner ring.Figure 4 shows that another embodiment of the present invention, do not have Lead-In Area and leading-out zone in the CD, have only data field 4, data can write or read to inner ring from outermost, also can write or read to outermost from inner ring.Like this, in whole spaces in optical disc information district, all be the data field, can be used for storing and writing down various user data.And the outermost edge from the block of information to the CD is not considered as data storage yet equally, but can be used as other purposes, as fixing and clamping or the like of disc.
Figure 5 shows that the distribution schematic diagram of circular information track of the small size CD of design of the present invention.As shown in the figure, in the Information Level of the small size CD that the present invention proposes, the information track in Lead-In Area, data field, the leading-out zone is to be the different concentric circular tracks 8 of countless diameters in the center of circle with the disc center.All data information memory are on these circular information tracks.
Figure 6 shows that the distribution schematic diagram of the spirality information track of small size CD.As shown in the figure, in the Information Level of the small size CD that the present invention proposes, the information track in Lead-In Area, data field, the leading-out zone is the spiral tracks 9 of closely arranging.All data information memory are on these spiral information tracks.
The profile that Figure 7 shows that small size CD of the present invention is an embodiment of rectangle.As shown in the figure, the profile of the small size CD among this embodiment is a rectangle, and wherein, 1 is pilot hole, and zone 10 is the ornamental area in the disc, and zone 11 is the block of information in the disc.
The profile that Figure 8 shows that the small size CD is an embodiment of arbitrary shape.As shown in the figure, it is heart-shaped that the profile of the small size CD among this embodiment is approximately, and wherein, 1 is pilot hole, and zone 10 is the ornamental area in the disc, and zone 11 is the block of information in the disc.
Above mentioned small size CD of the present invention, wherein the outside dimension of valid data memory block between 5mm～76mm, but and can be the read-only optical disc CD-WORM, can repeatedly wipe/re-write optical disk or the like.Because the size of the small size CD that the present invention proposes is littler than general 120mm CD, therefore has better portability.
Claims (10)
1, a kind of small size CD that is used for data storage and reads, it is characterized in that this CD comprises pilot hole, basalis, overcoat and information recording layer, described pilot hole is located at the rotation center of CD, basalis, information recording layer and overcoat overlap together successively mutually, the diameter of CD is 5mm～76mm, and the diameter of pilot hole is 0.1mm～15mm.
2, small size CD as claimed in claim 1, the thickness that it is characterized in that this CD is 0.2mm～1.3mm.
3, small size CD as claimed in claim 1 is characterized in that described tectal thickness is 0.01mm～1.0mm.
4, small size CD as claimed in claim 1 is characterized in that wherein said information recording layer is followed successively by zone of transition, Lead-In Area, data field and leading-out zone from pilot hole to garden week.
5, small size CD as claimed in claim 1 is characterized in that wherein said information recording layer is followed successively by Lead-In Area, data field and leading-out zone from pilot hole to garden week.
6, small size CD as claimed in claim 1 is characterized in that week is the data field to wherein said information recording layer from pilot hole to the garden.
7, small size CD as claimed in claim 3 is characterized in that wherein said data field is carved with the circular information track or the spirality information track of closely arranging.
8, small size CD as claimed in claim 4 is characterized in that wherein said data field is carved with the circular information track or the spirality information track of closely arranging.
9, small size CD as claimed in claim 5 is characterized in that wherein said data field is carved with the circular information track or the spirality information track of closely arranging.
10, small size CD as claimed in claim 1 is characterized in that this CD also comprises ornamental area, and described ornamental area is located at the CD periphery, and ornamental area is square, circular or other any geometric configuration.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03137736 CN1224028C (en) | 2003-06-23 | 2003-06-23 | Small-size compact disc for data memory and access |
| PCT/CN2004/000678 WO2005045816A1 (en) | 2003-06-23 | 2004-06-23 | Small-sized optical disk for data storing and reading |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03137736 CN1224028C (en) | 2003-06-23 | 2003-06-23 | Small-size compact disc for data memory and access |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1457052A true CN1457052A (en) | 2003-11-19 |
| CN1224028C CN1224028C (en) | 2005-10-19 |
Family
ID=29411822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03137736 Expired - Fee Related CN1224028C (en) | 2003-06-23 | 2003-06-23 | Small-size compact disc for data memory and access |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN1224028C (en) |
| WO (1) | WO2005045816A1 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH056572A (en) * | 1990-08-24 | 1993-01-14 | Sony Corp | Disk type recording medium |
| JP2000311352A (en) * | 1999-04-26 | 2000-11-07 | Sharp Corp | Optical disk and optical recording and reproducing device |
-
2003
- 2003-06-23 CN CN 03137736 patent/CN1224028C/en not_active Expired - Fee Related
-
2004
- 2004-06-23 WO PCT/CN2004/000678 patent/WO2005045816A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2005045816A1 (en) | 2005-05-19 |
| CN1224028C (en) | 2005-10-19 |
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