System and method for merging and separating attributes of consoles
US5491819A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 4, 1995 |
| Grant date | Feb 13, 1996 |
| Priority date | — |
| Expiry date | Jan 4, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99938
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system and method for performing merge transactions and non-failure rollback transactions between data structures without logging. The system comprises data structure objects (or consoles) comprising means for storing original attributes that define that object, means for storing apparent attributes merged into that object from the other object, means for storing a switch-to pointer, and means for storing a switch-chain pointer. The system may further comprise merging means for processing merge transactions, including means for switching the switch-to pointer of the second object to point to the first object, means for switching the switch-chain pointer of the first object to point to the second object to thereby form a switch chain, and means for logically ORing the apparent attributes of the first and second objects to thereby render the second object idle and permit the first object to control the attributes of the second object. The system may also include rollback means for rolling back a merge transaction, including means for removing the second object from the switch-chain, and means for logically ANDing the original attributes of the first object with the apparent attribu…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.