The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 07, 2004
Filed:
Apr. 29, 2002
William Q. Law, Beaverton, OR (US);
Phillip D. Applebee, Canby, OR (US);
Carl R. Matson, Aloha, OR (US);
Tektronix, Inc., Beaverton, OR (US);
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 signal is generated when the accessory device is connected to the interface that causes an interrupt signal to be coupled to a controller. The controller retrieves accessory device data stored in the device memory via the interface and determines if the connected accessory device is a valid device capable of being supported by the measurement test instrument and voltage power requirements for the accessory device. 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 based on the voltage power requirements that is coupled to the accessory device via the interface to provide power to the accessory device.