Disk storage apparatus including a single power supply hysteresis comparator having a symmetrical characteristic
US5351222A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 6, 1992 |
| Grant date | Sep 27, 1994 |
| Priority date | — |
| Expiry date | Oct 6, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/08541
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A rectangular wave generator includes a comparator having a first input terminal receiving an input signal, a second input terminal, and an output terminal. The comparator slices the input signal at a hysteresis voltage so that a rectangular wave is output via the output terminal. The generator also includes a differentiating circuit connected between the output terminal and the second input terminal. The differentiating circuit functions as a feedback circuit. In lieu of the differentiating circuit, it is possible to use a feedback circuit connected between the output terminal and the second input terminal, the feedback circuit comprising a control unit for changing a feedback quantity of the differentiating circuit in accordance with variations in a frequency of the input signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.