Methods and apparatus for software retrofitting
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 13, 1992
Grant Date -
N/A
app pub date -
Mar 2, 1989
filing date -
Mar 2, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A time-shared computer system is disclosed in which computer software programs, either application programs or operating system programs, can be retrofitted with new programs which are totally incompatible with the old versions, all without interrupting service provided by the software programs. In a real time software system such as one providing telephone service, the processor (or processors in a multiprocessor system) is divided into two logical partitions. The old version of the software runs in one partition while the new version is loaded into and started up in the other partition. When the new version is verified to be properly operating, the data traffic is transferred from the old version parition to the new version partition in two steps. First the input data is switched to the new verison. When the transactions in progress in the old version are all completed, the output data is switched from the old version to the new version. This software retrofitting on the fly is disclosed in connection with a telephone transaction processing system used to support special telephone services such as dial 800 calls and credit card calls.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully