Method of testing performance of spindle motor in CD-ROM drive
US6098026A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 2, 1998 |
| Grant date | Aug 1, 2000 |
| Priority date | — |
| Expiry date | Jul 2, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B33/10
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of testing the durability and performance of a spindle motor in a CD-ROM drive includes the steps of (a) setting a test repetition number of rotation/halt operations of the spindle motor, and a test delay time; (b) executing a rotation/halt command of the spindle motor at a predetermined time interval, when a test command is input; (c) comparing the operation state of the spindle motor with the input command and determining whether an error has occurred, after the test delay time from the time when the rotation/halt command of the spindle motor was input;(d) providing a visual display of an error state, when an error has occurred at step (c); and (e) increasing the value of a counter and returning to step (b) if the counter value is less than the test repetition number, and providing a visual display of test completion if the counter value is not less than the test repetition number, when no error has occurred at step (c). As a result, testing time can be reduced, and the durability of only the spindle motor can be accurately tested.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.