US5610901A
Expired / Lapsed
US
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Multiple data surface optical data storage system
Assignee: Mitsubishi Electric Corp
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Filing: 1996-08-01
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Granted: 1997-03-11
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Expires: 2016-08-01
Abstract
Abstract An optical data storage system comprises a multiple data surface medium and optical head. The medium comprises a plurality of substrates separated by a light transmissive medium. Data surfaces are located on the substrate surfaces which lie adjacent a light transmissive medium. The data surfaces are substantially light transmissive. The optical head includes an aberration compensator to allow the head to focus onto the different data surfaces and a filter to screen out unwanted reflected light.
Inventors
- 👤 Margaret E. Best
- 👤 Hal J. Rosen
- 👤 Kurt A. Rubin
- 👤 Timothy C. Strand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:48
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/007; G11B7/00745; G11B7/12; G11B7/135; G11B7/1381; G11B11/00; G11B11/10; G11B11/105; G11B11/1055; G11B11/10576; G11B11/10578; G11B11/10582; G11B11/10584; G11B19/00; G11B19/02; G11B19/12; G11B7/004; G11B7/005; G11B7/0053; G11B7/0055; G11B7/00557; G11B7/013; G11B7/08; G11B7/085; G11B7/08505; G11B7/08511; G11B7/08517; G11B7/09; G11B7/0901; G11B7/0908; G11B7/0938; G11B7/1353; G11B7/1365; G11B7/1372; G11B7/1376; G11B7/1392; G11B7/13925; G11B7/14; G11B7/24; G11B7/2403; G11B7/24035; G11B7/24038; G11B7/241; G11B7/242; G11B7/243; G11B7/2433; G11B7/252; G11B7/253; G11B7/257; G11B7/2578; G11B11/10595; G11B2007/0003; G11B2007/0009; G11B2007/0013; G11B2007/24302; G11B2007/24312; G11B2007/24314; G11B2007/24316; G11B2007/25705; G11B2007/25706; G11B2007/2571; G11B2007/25713; G11B2007/25715; G11B2007/25716; G11B2007/25718; G11B7/002; G11B7/0037; G11B7/00718; G11B7/00736; G11B7/0945; G11B7/2531; G11B7/2533; G11B7/2534; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S430/00; Y10S430/146
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
96 words
An optical data storage medium containing multiple data storage layers comprising: a plurality of support members, at least one of which is transmissive of electromagnetic radiation; a plurality of data layers on the plurality of support members, each data layer having data recorded in a substantially circular pattern, some of the recorded data on at least one of the data layers representing the quantity of data layers contained in the multiple data layer medium; and a connecting device for connecting the plurality of members together such that the data layers are in a spaced apart relationship.
Claim 2
Dependent Claim
96 words
An optical data storage medium containing multiple data storage layers comprising: a plurality of support members, at least one of which is transmissive of electromagnetic radiation; a plurality of data layers on the plurality of support members, each data layer having data recorded in a substantially circular pattern, some of the recorded data on at least one of the data layers representing the quantity of data layers contained in the multiple data layer medium; and a connecting device for connecting the plurality of members together such that the data layers are in a spaced apart relationship.
Claim 3
Dependent Claim
26 words
The medium of claim 1, wherein the data representing the quantity of data layers contained in the medium is recorded on each of the data layers.
Claim 4
Dependent Claim
28 words
The medium of claim 1, wherein there are two support members and two data layers, each of the two data layers being supported on a respective support member.
Claim 5
Dependent Claim
15 words
The medium of claim 1, wherein there are three support members and four data layers.
Claim 6
Dependent Claim
17 words
The medium of claim 1, wherein at least one of the data layers is a ROM surface.
Claim 7
Dependent Claim
18 words
The medium of claim 1, wherein at least one of the data layers has a WORM material coating.
Claim 8
Dependent Claim
19 words
The medium of claim 1, wherein at least one of the data layers has a phase change material coating.
Claim 9
Dependent Claim
18 words
The medium of claim 1, wherein at least one of the data layers has a magneto-optic material coating.
Claim 10
Dependent Claim
15 words
The medium of claim 1, wherein the connecting device provides a gap between the members.
Claim 11
Dependent Claim
19 words
The medium of claim 1, wherein the connecting device provides a solid electromagnetic radiation transmissive material between the members.
Claim 12
Dependent Claim
25 words
The medium of claim 1, wherein the recorded data representing the quantity of data layers contained in the medium is comprised of sector header marks.
Claim 13
Dependent Claim
10 words
The medium of claim 11, wherein the marks are pits.
Claim 14
Dependent Claim
11 words
The medium of claim 11, wherein the marks are inverse pits.
Claim 15
Dependent Claim
16 words
The medium of claim 1, wherein at least one of the members is comprised of glass.
Claim 16
Dependent Claim
18 words
The medium of claim 1, wherein at least one of the members is comprised of a polymer material.
Claim 17
Dependent Claim
20 words
The medium of claim 1, wherein the medium is disk shaped for rotation in an optical disk data storage system.
Claim 18
Dependent Claim
133 words
An optical data storage medium containing a plurality of separate data surfaces comprising: a first electromagnetic radiation transmissive member having a first data surface for storing recorded data, the first data surface having recorded data which is detectable by an electromagnetic radiation beam, the data being recorded in a substantially circular track pattern, some of the data recorded on the first data surface representing the quantity of data surfaces contained in the medium; a second member having a second data surface for storing recorded data, the second data surface having recorded data which is detectable by an electromagnetic radiation beam, the data being recorded in a substantially circular track pattern; and a connecting device for connecting the first and second members together such that the data surfaces are in a spaced apart relationship.
Claim 19
Dependent Claim
133 words
An optical data storage medium containing a plurality of separate data surfaces comprising: a first electromagnetic radiation transmissive member having a first data surface for storing recorded data, the first data surface having recorded data which is detectable by an electromagnetic radiation beam, the data being recorded in a substantially circular track pattern, some of the data recorded on the first data surface representing the quantity of data surfaces contained in the medium; a second member having a second data surface for storing recorded data, the second data surface having recorded data which is detectable by an electromagnetic radiation beam, the data being recorded in a substantially circular track pattern; and a connecting device for connecting the first and second members together such that the data surfaces are in a spaced apart relationship.
Claim 20
Dependent Claim
26 words
The medium of claim 17, wherein some of the data recorded on the second data surface represents the quantity of data surfaces contained in the medium.
Claim 21
Dependent Claim
18 words
The medium of claim 17, wherein the second member has a third data surface for storing recorded data.
Claim 22
Dependent Claim
15 words
The medium of claim 19, further including a third member having a fourth data surface.
Claim 23
Dependent Claim
17 words
The medium of claim 17, wherein at least one of the data surfaces is a ROM surface.
Claim 24
Dependent Claim
18 words
The medium of claim 17, wherein at least one of the data surfaces has a WORM material coating.
Claim 25
Dependent Claim
19 words
The medium of claim 17, wherein at least one of the data surfaces has a phase change material coating.
Claim 26
Dependent Claim
18 words
The medium of claim 17, wherein at least one of the data surfaces has a magneto-optic material coating.
Claim 27
Dependent Claim
15 words
The medium of claim 17, wherein the connecting device provides a gap between the members.
Claim 28
Dependent Claim
19 words
The medium of claim 17, wherein the connecting device provides a solid electromagnetic radiation transmissive material between the members.
Claim 29
Dependent Claim
24 words
The medium of claim 17, wherein the data representing the quantity of data surfaces contained in the medium is comprised of sector header marks.
Claim 30
Dependent Claim
10 words
The medium of claim 27, wherein the marks are pits.
Claim 31
Dependent Claim
11 words
The medium of claim 27, wherein the marks are inverse pits.
Claim 32
Dependent Claim
16 words
The medium of claim 17, wherein at least one of the members is comprised of glass.
Claim 33
Dependent Claim
18 words
The medium of claim 17, wherein at least one of the members is comprised of a polymer material.
Claim 34
Dependent Claim
20 words
The medium of claim 17, wherein the medium is disk shaped for rotation in an optical disk data storage system.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-03-10 | 2000-09-09 | 2001-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-03-10 | 2004-09-09 | 2005-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-03-10 | 2008-09-09 | 2009-03-11 | $7700.00 | Window Closed / Lapsed |