Browse Prior Art Database

Disclosed is a method for power reduction for CPUs through compiler-directed scheduling for asymmetrical functional units. Benefits include improved processing performance.

IP.com Disclosure Number: IPCOM000006446D
Publication Date: 2002-Jan-03
Document File: 1 page(s) / 30K

Publishing Venue

The IP.com Prior Art Database

Abstract

Disclosed is a method of protecting a USB port from excessive power drain. Benefits include decreased loss of USB ASIC circuitry on PC motherboards and in USB hubs.

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Method of protecting a USB port from excessive power drain

Disclosed is a method of protecting a USB port from excessive power drain. Benefits include decreased loss of USB ASIC circuitry on PC motherboards and in USB hubs.

Background

              With the current drive towards USB peripherals, a means for protecting the USB ASIC circuitry built into PC motherboards and USB hubs is necessary. It is becoming commonplace for USB ASICs and circuits to fail when connected to USB peripherals which exhibit heavy current draws in excess of USB specifications. Such current draws may occur during power cycling of the PC or USB hub while the USB peripheral remains connected to the PC USB port or a US13 hub.

              No conventional circuit breaker exists to protect USB circuitry.

Description

              The disclosed method is a small in‐line device incorporating a user resettable breaker which trips when power draw from the USB peripheral exceeds USB specifications (see Figure 1).

              The implementation of the internal circuit for the resettable USB circuit breaker can utilize a myriad of off‐the‐shelf resettable circuit breaking switches.

Fig. 1

Disclosed anonymously