Patent US4683372A successfully refreshed from Google Patents.
US4683372A
Expired / Lapsed
US
⏱️ 0.0 years remaining
IC card system
Assignee: Omron Corp
•
Filing: 1985-02-25
•
Granted: 1987-07-28
•
Expires: 2005-02-25
Abstract
Abstract An IC card system. An accessable memory is contained therein.
Inventors
- 👤 Hiromichi Matsumoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:46
CPC Classifications
G; G07; G07F; G07F7/00; G07F7/08; G07F7/10; G07F7/1008; G06; G06Q; G06Q20/00; G06Q20/30; G06Q20/34; G06Q20/341; G06Q20/355; G06Q20/3552; G06Q20/357; G06Q20/3576
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
142 words
An integrated circuit card system comprising: a card comprising: an integrated circuit supported on said card and comprising a data memory area divided into a plurality of memory regions, each of said regions corresponding to a respective type of data terminal which is capable of accessing it, and processing means for enabling a particular memory region to be accessed by a data terminal when received identification data from said data terminal indicates that said data terminal has access to said particular memory region, said processing means denying said data terminal access to other memory regions; and, means for connecting said integrated circuit with said data terminal; and, a data terminal comprising: a card input means for receiving said card and transmitting data to and receiving data from said integrated circuit, and, means for providing said terminal identification data to said integrated circuit.
Claim 2
Dependent Claim
142 words
An integrated circuit card system comprising: a card comprising: an integrated circuit supported on said card and comprising a data memory area divided into a plurality of memory regions, each of said regions corresponding to a respective type of data terminal which is capable of accessing it, and processing means for enabling a particular memory region to be accessed by a data terminal when received identification data from said data terminal indicates that said data terminal has access to said particular memory region, said processing means denying said data terminal access to other memory regions; and, means for connecting said integrated circuit with said data terminal; and, a data terminal comprising: a card input means for receiving said card and transmitting data to and receiving data from said integrated circuit, and, means for providing said terminal identification data to said integrated circuit.
Claim 3
Dependent Claim
105 words
An integrated circuit card comprising: an integrated circuit supported on said card and comprising a data memory area divided into a plurality of memory regions, each of said regions corresponding to a respective type of data terminal which is capable of accessing it and processing means for enabling a particular memory region to be accessed by a data terminal when received identification data from said data terminal indicates that said data terminal has access to said particular memory region, said processing means denying said data terminal access to other memory regions; and, means on said card for connecting said integrated circuit with said data terminal.
Claim 4
Dependent Claim
105 words
An integrated circuit card comprising: an integrated circuit supported on said card and comprising a data memory area divided into a plurality of memory regions, each of said regions corresponding to a respective type of data terminal which is capable of accessing it and processing means for enabling a particular memory region to be accessed by a data terminal when received identification data from said data terminal indicates that said data terminal has access to said particular memory region, said processing means denying said data terminal access to other memory regions; and, means on said card for connecting said integrated circuit with said data terminal.
References Cited (Backward Citations)
US4367402A
Cited
US4471216A
Cited
US4523297A
Cited
US4498000A
Cited
US4550248A
Cited
US4532419A
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 |