Patent US6480463B2 successfully refreshed from Google Patents.
US6480463B2
Expired / Lapsed
US
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Method and device for write protecting compact disk media
Assignee: Hewlett Packard Development Co LP
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Filing: 2001-02-20
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Granted: 2002-11-12
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Expires: 2021-02-20
Abstract
Abstract A write-protect ring for protecting an optical disk from being written upon is disclosed. The write-protect ring includes an adhesive portion and a non-adhesive portion so that the non-adhesive portion is nearer data regions of the optical disk, thereby preventing the adhesive from interfering with the data on the optical disk. The write-protect ring may also include permanent adhesive which prevents the write-protect ring from being removed from the optical disk without damage to the optical disk.
Inventors
- 👤 Charles L. Hunter
- 👤 Lawrence Taugher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:13
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/28; G11B23/288; B; B65; B65C; B65C9/00; B65C9/26; B65C9/262; B65C9/265
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
77 words
An apparatus for write protection of an optical disk, the optical disk having a power calibration area and a data area, comprising: a write-protect ring, that covers a power-calibration area of an optical disk when installed on the optical disk, wherein the write-protect ring has a first side with an adhesive portion and a non-adhesive portion, the first side of the write-protect ring contacting the optical disk when the write-protect ring is installed on the optical disk.
Claim 2
Independent Claim
77 words
An apparatus for write protection of an optical disk, the optical disk having a power calibration area and a data area, comprising: a write-protect ring, that covers a power-calibration area of an optical disk when installed on the optical disk, wherein the write-protect ring has a first side with an adhesive portion and a non-adhesive portion, the first side of the write-protect ring contacting the optical disk when the write-protect ring is installed on the optical disk.
Claim 3
Dependent Claim
41 words
The apparatus of claim 1 , wherein the non-adhesive portion is nearer to an outer diameter of the write-protect ring and a data area of the optical disk when the write-protect ring covers the power calibration area of the optical disk.
Claim 4
Dependent Claim
19 words
The apparatus of claim 1 , wherein the adhesive portion covers the power calibration area of the optical disk.
Claim 5
Dependent Claim
24 words
The apparatus of claim 1 , wherein the write-protect ring further comprises: a means for visually indicating an attempt to remove the write-protect ring.
Claim 6
Dependent Claim
39 words
The apparatus of claim 1 , wherein the write-protect ring further comprises: one or more tabs on an inner diameter of the write-protect ring, wherein the a tab is pulled to remove the write-protect ring from the optical disk.
Claim 7
Dependent Claim
20 words
The apparatus of claim 1 , further comprising: an alignment ring located within an inner diameter of the write-protect ring.
Claim 8
Independent Claim
45 words
A method of write protection for a optical disk, the optical disk having a power calibration area and a data area, the method comprising: covering the power calibration area with a write-protect ring by adhering a portion of the write-protect ring to the optical disk.
Claim 9
Independent Claim
45 words
A method of write protection for a optical disk, the optical disk having a power calibration area and a data area, the method comprising: covering the power calibration area with a write-protect ring by adhering a portion of the write-protect ring to the optical disk.
Claim 10
Dependent Claim
33 words
The method of claim 7 , wherein the adhered portion of the write-protect ring is adhered to an area of the optical disk not adjacent to the data area of the optical disk.
Claim 11
Dependent Claim
64 words
The method of claim 7 , wherein the write-protect ring includes an alignment ring that has an inner diameter that is the same as an inner diameter of the optical disk, the method further comprising: aligning the write-protect ring on the power calibration area using the alignment ring, wherein the alignment ring inner diameter is aligned with the inner diameter of the optical disk.
Claim 12
Independent Claim
57 words
An apparatus for write protection of an optical disk, the optical disk having a power calibration area and a data area, comprising: a write-protect ring, that covers a power-calibration area of an optical disk when installed on the optical disk, including an adhesive that allows the write-protect ring to be permanently be attached to the optical disk.
Claim 13
Independent Claim
57 words
An apparatus for write protection of an optical disk, the optical disk having a power calibration area and a data area, comprising: a write-protect ring, that covers a power-calibration area of an optical disk when installed on the optical disk, including an adhesive that allows the write-protect ring to be permanently be attached to the optical disk.
Claim 14
Dependent Claim
19 words
The apparatus of claim 10 , further comprising: a means for visually indicating attempts to remove the write-protect rings.
Claim 15
Dependent Claim
30 words
The apparatus of claim 10 , wherein removing the write-protect ring from an optical disk after the write-protect ring has been installed on the optical disk damages the optical disk.
Claim 16
Dependent Claim
43 words
The apparatus of claim 10 , wherein the write-protect ring has a first side with an adhesive portion and a non-adhesive portion, the first side of the write-protect ring contacting the optical disk when the write-protect ring is installed on the optical disk.
Claim 17
Dependent Claim
41 words
The apparatus of claim 13 , wherein the non-adhesive portion is nearer to an outer diameter of the write-protect ring and a data area of the optical disk when the write-protect ring covers the power calibration area of the optical disk.
Claim 18
Dependent Claim
19 words
The apparatus of claim 13 , wherein the adhesive portion covers the power calibration area of the optical disk.
Claim 19
Dependent Claim
39 words
The apparatus of claim 10 , wherein the write-protect ring further comprises: one or more tabs on an inner diameter of the write-protect ring, wherein the a tab is pulled to remove the write-protect ring from the optical disk.
Claim 20
Dependent Claim
20 words
The apparatus of claim 10 , further comprising: an alignment ring located within an inner diameter of the write-protect ring.
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) | 2005-11-11 | 2006-05-13 | 2006-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-11-11 | 2010-05-13 | 2010-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-11-11 | 2014-05-13 | 2014-11-12 | $7700.00 | Window Closed / Lapsed |