Measurement test instrument and associated voltage management system for accessory device
US6629048B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 20, 2000 |
| Grant date | Sep 30, 2003 |
| Priority date | — |
| Expiry date | Sep 22, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R1/067
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A measurement test instrument voltage management system for an accessory device has a accessory device interface that provides a voltage to a memory device in the accessory device. A sensing circuit receives a sensing signal from the accessory device when it is connected to the interface. The sensing circuit generates an interrupt signal that is coupled to a controller. The controller initiates the generation of a clock signal that is coupled to the accessory device through the interface to retrieve accessory device data stored in the device memory. The controller determines if the connected accessory device is a valid device capable of being supported by the measurement test instrument. The controller generates an enable signal for a valid and supported device that is coupled to a voltage switching circuit. The voltage switching circuit generates at least a first output voltage that is coupled to the accessory device via the interface to provide power to the accessory device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.