US4683371A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual stripe optical data card
Assignee: LaserCard Corp
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Filing: 1985-08-06
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Granted: 1987-07-28
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Expires: 2005-08-06
Abstract
Abstract An optical data card having a pair of spaced apart information strips. One strip has pre-recorded programs or data and is always a non-erasable strip. This strip may be either a reflective direct-read-after-write non-erasable type or may be a read-only optical memory (ROOM) strip. Another strip serves as a temporary, scratchpad or cache memory and is either a reflective DRAW strip of the erasable type or a DRAW non-erasable strip which is at least partially blank, with sufficient space for temporary memory needs over an extended period of time.
Inventors
- 👤 Jerome Drexler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:13
CPC Classifications
G; G06; G06K; G06K19/00; G06K19/06; G06K19/06009; G06K19/06046; G06K1/00; G06K1/12; G06K19/08; G06K19/10; G06K19/14; G06K7/00; G06K7/10; G06K7/14; G07; G07C; G07C9/00; G07C9/20; G07C9/22; G07C9/25; G11; G11B; G11B17/00; G11B17/34; G11B7/00; G11B7/002; G11B7/0033; G11B7/24; G11B7/26
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
67 words
An optical data card comprising, a card substrate having opposed sides and a length equal to or exceeding a width, a first strip of erasable optical recording material affixed to said card substrate, said first strip being in-situ laser recordable and being substantially blank, and a second strip of optical data storage material affixed to said card substrate, said second strip having pre-recorded programs or data thereon.
Claim 2
Dependent Claim
67 words
An optical data card comprising, a card substrate having opposed sides and a length equal to or exceeding a width, a first strip of erasable optical recording material affixed to said card substrate, said first strip being in-situ laser recordable and being substantially blank, and a second strip of optical data storage material affixed to said card substrate, said second strip having pre-recorded programs or data thereon.
Claim 3
Dependent Claim
26 words
The data card of claim 1 wherein said first strip comprises a direct-read-after-write, reflective, erasable strip and said second strip comprises a direct-read-after-write, reflective non-erasable strip.
Claim 4
Dependent Claim
25 words
The data card of claim 1 wherein said first strip comprises a direct-read-after-write, reflective, erasable strip and said second strip comprises a read-only optical memory.
Claim 5
Dependent Claim
32 words
The data card of claim 1 wherein said first strip comprises a direct-read-after-write, reflective, erasable strip having some pre-recorded programs or data thereon, and said second strip comprises a read-only optical memory.
References Cited (Backward Citations)
US3530441A
Cited
US3644683A
Cited
US3873813A
Cited
US4014602A
Cited
US4190843A
Cited
US4313188A
Cited
US4305081A
Cited
US4224666A
Cited
US4197986A
Cited
US4300143A
Cited
US4202491A
Cited
US4209804A
Cited
US4345261A
Cited
US4304990A
Cited
US4467209A
Cited
US4360728A
Cited
US4425570A
Cited
US4493887A
Cited
US4572891A
Cited
US4527173A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-07-27 | 1991-01-26 | 1991-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-27 | 1995-01-26 | 1995-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-27 | 1999-01-26 | 1999-07-28 | $7700.00 | Window Closed / Lapsed |