US4829168A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical memory card
Assignee: Canon Inc
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Filing: 1987-04-24
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Granted: 1989-05-09
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Expires: 2007-04-24
Abstract
Abstract An optical memory card subjected to optical information recording and reproduction, comprising, a card-like card body, an optical recording portion provided on said card body, and a light-transmitting portion formed in said card body for detecting an insertion state of said optical memory card in a card reader and/or writer.
Inventors
- 👤 Takashi Nakahara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:55
CPC Classifications
G; G06; G06K; G06K19/00; G06K19/04; G06K13/00; G06K13/02; G06K13/06; G06K13/067; G11; G11B; G11B7/00; G11B7/002; G11B7/0033
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
121 words
An optical memory card usable for optical information recording and reproduction in a card reader and/or writer, the card reader and/or writer including drive means for transporting said optical memory card, said optical memory card comprising: a rectangular card-like card body; an optical recording portion provided on said card body; and a light-transmitting portion formed in said card body for detecting an insertion state of said optical memory card in the card reader and/or writer, said light-transmitting portion being offset from the center of said card body in the widthwise and longitudinal directions thereof, and, when the drive means is transporting said optical memory card, being disposed in a position away from the drive means of the card reader and/or writer.
Claim 2
Dependent Claim
121 words
An optical memory card usable for optical information recording and reproduction in a card reader and/or writer, the card reader and/or writer including drive means for transporting said optical memory card, said optical memory card comprising: a rectangular card-like card body; an optical recording portion provided on said card body; and a light-transmitting portion formed in said card body for detecting an insertion state of said optical memory card in the card reader and/or writer, said light-transmitting portion being offset from the center of said card body in the widthwise and longitudinal directions thereof, and, when the drive means is transporting said optical memory card, being disposed in a position away from the drive means of the card reader and/or writer.
Claim 3
Dependent Claim
15 words
An optical memory card according to claim 1, wherein said light-transmitting portion is a hole.
Claim 4
Dependent Claim
16 words
An optical memory card according to claim 2, wherein said hole is sealed by transparent material.
Claim 5
Dependent Claim
15 words
An optical memory card according to claim 1, wherein said light-transmitting portion is a notch.
Claim 6
Dependent Claim
27 words
An optical memory card according to claim 1, wherein said light-transmitting portion is formed in an area of said card body other than said optical recording portion.
Claim 7
Dependent Claim
20 words
An optical memory card according to claim 2, wherein the diameter of said hole is no less than 0.7 mm.
References Cited (Backward Citations)
US3162468A
Cited
US3562497A
Cited
US3493730A
Cited
US4629873A
Cited
US4598393A
Cited
US4625100A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-05-08 | 1992-11-07 | 1993-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-08 | 1996-11-07 | 1997-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-08 | 2000-11-07 | 2001-05-09 | $7700.00 | Window Closed / Lapsed |