Patent US5247681A successfully refreshed from Google Patents.
US5247681A
Expired / Lapsed
US
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Dynamic link libraries system and method
Assignee: International Business Machines Corp
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Filing: 1990-12-18
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Granted: 1993-09-21
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Expires: 2010-12-18
Abstract
Abstract A system and method for sharing software modules which are part of a computer program, and which have been previously loaded into a private area of main memory of a computer. The addresses of software modules which remain loaded in the private area after an execution of the computer program are kept track of. When a subsequent execution of the computer program requires a software module which has remained loaded in private memory, the address of the software module is obtained, and the computer program branches to that address.
Inventors
- 👤 Frederick L. Janis
- 👤 Jeffery D. Aman
- 👤 Daryl R. Cox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:30
CPC Classifications
G; G06; G06F; G06F9/00; G06F9/06; G06F9/46; G06F9/52; G06F9/44; G06F9/445; G06F9/44557; G06F9/44563
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
A computer implemented process for memory management in a computer system having a storage device and a main memory, the main memory having a common area, a private area, and a global environment area, comprising: (1) spawning a first instance of a computer program, requiring at least one software module, and loading said software module from the storage device into the private area for execution; (2) generating a starting address of said software module, and storing said starting address in the global environment area; (3) spawning a second instance of said computer program which requires said software module, wherein said second instance requires said software module subsequent to said loading of said software module in step (1); (4) obtaining said starting address of said software module from said global environment area; and (5) branching to said starting address.
Claim 2
Dependent Claim
138 words
A computer implemented process for memory management in a computer system having a storage device and a main memory, the main memory having a common area, a private area, and a global environment area, comprising: (1) spawning a first instance of a computer program, requiring at least one software module, and loading said software module from the storage device into the private area for execution; (2) generating a starting address of said software module, and storing said starting address in the global environment area; (3) spawning a second instance of said computer program which requires said software module, wherein said second instance requires said software module subsequent to said loading of said software module in step (1); (4) obtaining said starting address of said software module from said global environment area; and (5) branching to said starting address.
References Cited (Backward Citations)
US4742450A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-09-20 | 1997-03-22 | 1997-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-09-20 | 2001-03-22 | 2001-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-09-20 | 2005-03-22 | 2005-09-21 | $7700.00 | Window Closed / Lapsed |