Method of operating a timer in a digital data processing system
US5138707A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 13, 1989 |
| Grant date | Aug 11, 1992 |
| Priority date | — |
| Expiry date | Sep 13, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F1/14
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method of operating a timer mechanism in a digital data processing system is described in which the contents of at least one timer register is updated by a predetermined time increment during each of successive periodic update cycles. Each update cycle includes a predetermined number of operating cycles of the data processing system. During each update cycle, the contents of an adjustment register is circularly shifted by one bit position and if the bit value at a particular position in this adjustment register has a predetermined binary value during an update cycle, then actual updating of the timer register is omitted during a related update cycle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.