Patent ID: 9420692
Filing Date: 2016-08-16
CPC Classification: H05K

Claim Text:
1. An electronic control device for executing a fundamental function and an additional function, which is added selectively to the fundamental function, the electronic control device comprising: a fundamental circuit element that executes the fundamental function; an additional circuit element that executes the additional function and is added to the fundamental circuit element; and a printed wiring board that mounts the fundamental circuit element and the additional circuit element thereon, wherein the printed circuit board has a rectangular shape, which is divided into a first region and a second region, wherein the fundamental circuit element is mounted in the first region, and the additional circuit element is mounted in the second region, wherein the fundamental circuit element includes an operation voltage generating circuit and a bypass capacitor, wherein the operation voltage generating circuit supplies an operation voltage to at least a part of the fundamental circuit element and the additional circuit element, wherein the bypass capacitor functions for the additional circuit element, wherein the bypass capacitor is connected to a power source wiring pattern for supplying the operation voltage generated by the operation voltage generating circuit to the additional circuit element, and wherein the bypass capacitor is arranged in the first region at a position nearer the second region than the operation voltage generating circuit.