Patent ID: 6470133
Filing Date: 2002-10-22
Classification: G11B,H04N,H05K

Abstract:
An integrated circuit for controlling systems of electronic equipment incorporated with a memory circuit therein, comprising:said memory circuit memorizes a program which practices a software function of said electronic equipment, and forms one of a series of integrated circuit groups which has an interchangeability with respect to a lower rank function from a software of a much higher rank to a software of a lower rank respectively; each memory capacity of said series of integrated circuit groups has a fixed amount which lessens corresponding to each one from said software of upper rank function to lower rank spacing function, respectively, and the capacity of the memory circuit is changed according to products to which the integrated circuit is applied; the arranged position and the size of each outer input-output lead wire of said series of the integrated circuit group are partially or totally the same as those of the lead wire of the integrated circuit of upper rank function; and a signal which inputs or outputs said input-output lead wire and has an interchangeability with respect to the integrated circuit to the lower rank function.