Patent ID: 8957697
Filing Date: 2015-02-17
Classification: H05K

Abstract:
1. A circuit board, comprising: a main part on which a processor is mounted; a cut part to be cut off from the main part at a cut section before the board is reused; and a conductor pattern wired through the cut part via the cut section and to be cut off into a plurality of patterns at the cut section as the cut part is cut off, wherein, when electric power is supplied, the processor detects a difference in signal level between a level of a signal output from the conductor pattern before the cut part is cut off, and a level of the signal output from the conductor pattern after the cut part is cut off to output a detection result, and wherein when the cut part includes a plurality of cuts parts, the processor further counts a number of one or more cut parts that are cut off from the main part of the board based on the detection result and obtains a detected number of times the board is reused based on the counted number of one or more cut parts that are cut off.