Patent · US Active

Energy-saving circuit for a peripheral device, peripheral device, switching device and method of operation

US8527798B2 · kind B2 · utility

2Cited by

5References

17Claims

0Family size

Assignee

Fujitsu Technology Solutions Intellectual Property GmbH · DE

Inventors

Peter Kastl · Schrobenhausen, DE
Ottwald Markel · Augsburg, DE
Stephan Hornung · Worms, DE

Key dates

Filing date	Oct 8, 2010
Grant date	Sep 3, 2013
Priority date	—
Expiry date	Aug 27, 2031

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02D30/50
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

An energy-saving circuit applies to a peripheral device for connection to a data bus of a host system. The energy-saving circuit includes a monitoring circuit for monitoring a communication via the data bus, a holding circuit for holding a connection state of the peripheral device, at least one switching element for interrupting a supply voltage for the peripheral device, and a control circuit. The control circuit is set up to recognize by means of the monitoring circuit the beginning of an idle state of the data bus, to hold the connection state of the peripheral device by activation of the holding circuit upon recognition of the idle state, and to interrupt the feeding of a supply voltage for the peripheral device by opening the at least one switching element.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.