Patching apparatus and method for upgrading modem software code
US6135651A · kind A · utility
23Cited by
19References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 29, 1997 |
| Grant date | Oct 24, 2000 |
| Priority date | — |
| Expiry date | May 29, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/328
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A software patch method and apparatus using a content addressable memory (CAM) to produce a code change enable signal when a program memory address matches a patch memory address, to cause program execution of modem operation to be diverted to the patch code when an address comparison hit is achieved. The patching apparatus includes a program memory for applying program instructions onto a data bus for execution, unless an address comparison of a program address and a patch address causes application of a substitute address onto the data bus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.