Variable frequency clock for an electronic system and method therefor
US6061803A · kind A · utility
4Cited by
5References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 15, 1993 |
| Grant date | May 9, 2000 |
| Priority date | — |
| Expiry date | Nov 15, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D10/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An activity sensor monitors a microprocessor based system for a change in a logic state. In response to the change, the activity sensor provides a reset timer pulse to a delay timer circuit. The delay timer is a counter that stores a signal representation of the number of timing pulses provided by a timing clock. In response to the timer reset signal, the delay timer is reset. When the timer reset pulse is not provided for a predetermined interval, the delay timer generates a timeout pulse that causes a reduction in the frequency of a system clock.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.