Apparatus for controlling peripheral equipment
US4881169A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 9, 1987 |
| Grant date | Nov 14, 1989 |
| Priority date | — |
| Expiry date | Nov 9, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2020/10916
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus for controlling peripheral equipment includes a circuit for driving the peripheral equipment, first and second registers for storing conditions under which the peripheral equipment is operated, and a timer for counting a time of operation of the peripheral equipment based on data stored in the second register. The content of the first register is written into the second when all zeros are stored in the latter. When the counted time becomes equal to a predetermined time, a time over signal, indicating that an operation time of a specific piece of peripheral equipment is longer than a normal operation time, is produced so that it is possible for a single common timer to count the operation time of a plurality of peripheral equipment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.