Patent ID: 7716410
Filing Date: 2010-05-11
Classification: G09G,H04N

Abstract:
1. An information device packaged in a single package, comprising: a main function unit including a main processing circuit for executing signal processing related to a main function in said information device and a first microcomputer for controlling said main processing circuit by executing a first firmware program; and an interface function unit including a first interface circuit for receiving data from an exterior device located outside of said information device to provide to said main processing circuit, a second interface circuit for performing an authentication operation with the exterior device, and a second microcomputer provided separately from said first microcomputer for controlling said first interface circuit, and a memory for storing a second firmware program for controlling said first interface circuit, wherein said main function unit executes said signal processing based on said received data, wherein said second microcomputer downloads said second firmware from said memory by executing a download program, and controls said authentication operation of said second interface circuit, wherein said interface function unit is a product of a single-chip process that is separate from said main function unit, wherein said second microcomputer has the function of communicating with said first microcomputer, and wherein said first microcomputer resets said second microcomputer via said function of communicating in accordance with a state of receiving data to provide to said main function unit.