Patent ID: 8135944
Filing Date: 2012-03-13
Classification: G06F,Y02D,Y10S

Abstract:
1. An apparatus including a plurality of separately powered electrical circuits, comprising: a plurality of electrical circuits, wherein each electrical circuit includes one or more power inputs; a plurality of power switch circuits, wherein each power switch circuit includes a control input and includes a power output connected to a distinct one of the power inputs of the electrical circuits; one or more isolator circuits, each isolator circuit including a control input, a data input, and a data output; and a controller circuit; wherein the controller circuit is configured to send an enable signal to the control input of each of the power switch circuits whose power output is connected to a selected one of the electrical circuits; wherein the controller circuit is configured to send a disable signal to the control input of each of the other power switch circuits; wherein a first one of the electrical circuits includes one or more data inputs respectively connected to the data output of a respective one of the isolator circuits; and wherein the controller circuit is configured to send an isolator enable signal to the control input of each of the isolator circuits while it sends said enable signal to each of the plurality of power switch circuits connected to said one electrical circuit and to send an isolator disable signal to the control input of each of the isolator circuits while it sends said disable signal to each of the plurality of power switch circuits connected to said one electrical circuit.