Acoustic wave diagnostic apparatus and method of controlling same
US10459073B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 8, 2016 |
| Grant date | Oct 29, 2019 |
| Priority date | — |
| Expiry date | Apr 12, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S15/8986
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
If the boundary value of a velocity scale set in a case where the information indicating the velocity of the moving body is displayed on a liquid crystal panel is less than a threshold value, the frequency of pulses used in pulse-width control is set to 20 kHz in such a manner that noise ascribable to the pulses for pulse-width control will not be displayed on the liquid crystal panel. If the boundary value of the velocity scale is equal to or greater than the threshold value, then the frequency of pulses used in pulse-width control is set to 200 Hz in such a manner that noise ascribable to the pulses for pulse-width control will reside at a position remote from the information indicative of velocity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.