US3719804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Permanent information store
Assignee: Fujitsu Services Ltd
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Filing: 1971-06-15
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Granted: 1973-03-06
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Expires: 1991-06-15
Abstract
Abstract A permanent information storage device has a hidden conductive pattern of first areas selectively connected to a second area. Reading is by energizing capacitive couplings to the first areas and detecting for response in the second area.
Inventors
- 👤 D Illing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:17
CPC Classifications
G; G06; G06K; G06K19/00; G06K19/06; G06K19/067
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
200 words
An interrogatory capacitance arrangement for use with an information storage system, the interrogatory capacitance arrangement including; an irreversibly alterable information storage member including, a support member carrying a first conductive array comprising at least one conductive first pattern of predetermined configuration, at least one associated conductive first area, a connecting element interconnecting the first pattern and the associated first area and means totally encapsulating the first conductive array in non-conductive material, information being irreversibly recorded in the storage member by interrupting the connecting element between selected first areas and the associated first pattern; a reference member including, means carrying a discontinuous second array comprising at least one conductive second pattern similar to the conductive first pattern of the storage member and at least one associated conductive second area similar to the conductive first area of the storage member, the relative positions of the first and second arrays being such that on presenting the storage member to the reference member and applying electrical signals to the second areas of the reference member the interrogative capacitance action is obtained by capacitive inter-coupling action between a first area connected to a first pattern and the respective second area associated with that first area.
Claim 2
Dependent Claim
200 words
An interrogatory capacitance arrangement for use with an information storage system, the interrogatory capacitance arrangement including; an irreversibly alterable information storage member including, a support member carrying a first conductive array comprising at least one conductive first pattern of predetermined configuration, at least one associated conductive first area, a connecting element interconnecting the first pattern and the associated first area and means totally encapsulating the first conductive array in non-conductive material, information being irreversibly recorded in the storage member by interrupting the connecting element between selected first areas and the associated first pattern; a reference member including, means carrying a discontinuous second array comprising at least one conductive second pattern similar to the conductive first pattern of the storage member and at least one associated conductive second area similar to the conductive first area of the storage member, the relative positions of the first and second arrays being such that on presenting the storage member to the reference member and applying electrical signals to the second areas of the reference member the interrogative capacitance action is obtained by capacitive inter-coupling action between a first area connected to a first pattern and the respective second area associated with that first area.
Claim 3
Dependent Claim
200 words
An interrogatory capacitance arrangement for use with an information storage system, the interrogatory capacitance arrangement including; an irreversibly alterable information storage member including, a support member carrying a first conductive array comprising at least one conductive first pattern of predetermined configuration, at least one associated conductive first area, a connecting element interconnecting the first pattern and the associated first area and means totally encapsulating the first conductive array in non-conductive material, information being irreversibly recorded in the storage member by interrupting the connecting element between selected first areas and the associated first pattern; a reference member including, means carrying a discontinuous second array comprising at least one conductive second pattern similar to the conductive first pattern of the storage member and at least one associated conductive second area similar to the conductive first area of the storage member, the relative positions of the first and second arrays being such that on presenting the storage member to the reference member and applying electrical signals to the second areas of the reference member the interrogative capacitance action is obtained by capacitive inter-coupling action between a first area connected to a first pattern and the respective second area associated with that first area.
Claim 4
Dependent Claim
200 words
An interrogatory capacitance arrangement for use with an information storage system, the interrogatory capacitance arrangement including; an irreversibly alterable information storage member including, a support member carrying a first conductive array comprising at least one conductive first pattern of predetermined configuration, at least one associated conductive first area, a connecting element interconnecting the first pattern and the associated first area and means totally encapsulating the first conductive array in non-conductive material, information being irreversibly recorded in the storage member by interrupting the connecting element between selected first areas and the associated first pattern; a reference member including, means carrying a discontinuous second array comprising at least one conductive second pattern similar to the conductive first pattern of the storage member and at least one associated conductive second area similar to the conductive first area of the storage member, the relative positions of the first and second arrays being such that on presenting the storage member to the reference member and applying electrical signals to the second areas of the reference member the interrogative capacitance action is obtained by capacitive inter-coupling action between a first area connected to a first pattern and the respective second area associated with that first area.
Claim 5
Dependent Claim
43 words
An interrogatory capacitance arrangement as claimed in claim 1, in which the first pattern comprises a relatively large conductive area central of its support member with connecting elements selectively extending to a plurality of small conductive areas each constituting a said first area.
Claim 6
Dependent Claim
60 words
An interrogatory capacitance arrangement as claimed in claim 2 in which one small conductive area is always connected to the larger central conductive area of the alterable storage member regardless of stored information and the corresponding small area of the reference member will be in juxtaposition therewith when the alterable storage member is correctly located relative to the reference member.
Claim 7
Dependent Claim
32 words
An interrogatory capacitance arrangement as claimed in claim 1, in which the alterable storage member is precoded by omitting from the first conductive array of at least one predetermined said connecting element.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-05 | 1976-09-04 | 1977-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-05 | 1980-09-04 | 1981-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-05 | 1984-09-04 | 1985-03-06 | $7700.00 | Window Closed / Lapsed |