CIRCUIT BOARD WITH CONNECTORS

PROBLEM TO BE SOLVED: To provide a circuit board with connectors that can suppress an influence of noises from other signal lines on signal lines forming a CAN bus, improve noise resistance of the signal lines forming the CAN bus against their peripheries and reduce noises from the CAN bus to its periphery. SOLUTION: A wiring pattern is provided with two signal lines L1 and L2 that are arranged side by side so as to form a CAN bus within one plane, and ground patterns E1 and E2 that are arranged in a manner to pinch an area where the signal lines L1 and L2 are arranged side by side from the opposite side to each other. The area between the arranged two signal lines L1 and L2 is formed as a non-wired area M. As a result, the non-wired area M is not provided with other signal lines, so that no influence of noises due to communication of the other signal lines is given to the signal lines L1 and L2. The noises from the signal lines L1 and L2 are absorbed by the ground patterns E1 and E2, so that the noises therefrom to their peripheries are reduced. COPYRIGHT: (C)2005,JPO&NCIPI