The log positioning and conveying apparatus is used for conveying a log from an upstream end to a downstream end, and for positioning a log according to a predetermined downstream position. The main body has a manually sharpenable chisel point tip with multiple razor-sharp apices. At least one switch of the image sensor is controlled such that the electric charges are stored in the first charge storage as a result of the illumination during the at least one first interval and in the second charge storage as a result of the illumination during the at least one second interval. An on-chip cache management controller is integrated on the network processor.