Patent ID: 8005642
Filing Date: 2011-08-23
Classification: G01D

Abstract:
1. A sensor readout, comprising: a selector circuit having a first input channel configured to receive a first component of an actual sensor input and a second input channel configured to receive a second component of the actual sensor input, and to pass a currently selected one of the first and second components of the actual sensor input as an output of the selector circuit; a signal history including a plurality of hold elements coupled to the selector circuit, wherein a first hold element of the plurality of hold elements is configured to store a first signal representing a most recently passed first component and wherein a second hold element of the plurality of hold elements is configured to store a second signal representing a most recently passed second component; a predictor circuit configured and to generate a corresponding predicted sensor input for each channel based on the signal history; and a select controller coupled to the predictor circuit and the selector circuit, wherein the select controller is configured to receive the predicted sensor inputs, to determine which of the predicted sensor inputs is most changed from the corresponding most recently passed components in the signal history as the most changed input, and to direct the selector circuit to pass a next actual sensor input on the channel corresponding with the most changed input; and a de-selector circuit coupled to the select circuit, the select controller and the signal history, wherein the de-selector circuit is configured to provide the output of the selector circuit to one of the first and second hold elements as directed by the select controller.