Patent ID: 6359241
Filing Date: 2002-03-19
Classification: G06K,G07C

Abstract:
An integrated circuit device for sensing, capturing, memorizing, and preserving spatial and/or time-domain distribution of external events for a long lasting time period without external support, said device comprising:a sequence of external events; an array of cells for sensing and capturing spatial and/or time-domain distribution of selective one or plurality of said extend events; a source means of charging/loading signal coupled to said cells, said source means produces a sequence of charging/loading signals, wherein each of a plurality of charging/loading signal provide a suitable magnitude to correspond an elapsed time mark with each of said external event; a memory means for memorizing a present value of said charging/loading signal at a moment of cell activation, which correspond with the time instance when said external event happens, and a means for preserving and maintaining said present value of said charging/loading signal for a long time period without any external support.