INFORMATION PROCESSOR AND COMPUTER SOFTWARE

申请公布号：

JP2004192529(A)

申请号：

JP20020362414

申请日期：

2002.12.13

申请公布日期：

2004.07.08

申请人：

SHARP CORP

发明人：

SHIRAISHI KENICHI

分类号：

G06F12/14;G06F1/00;G06F11/00;G06F21/02;G06F21/22;G06F21/24;(IPC1-7):G06F1/00

主分类号：

G06F12/14

摘要：

PROBLEM TO BE SOLVED: To provide an information processor having a function for permitting rewrite of firmware and a function for preventing unauthorized rewrite of the firmware and computer software. SOLUTION: The information processor is provided with a flash memory 6, a RAM area 10, an EEPROM 7 and a microcomputer 5. If a first step is executed, when a CD-R medium 2 in which a main body of the firmware for rewrite is stored is inserted, the microcomputer 5 permits rewrite of the firmware. When execution of the second step is attempted without executing the first step, the microcomputer 5 stores information for prohibiting rewrite of the firmware in the EEPROM 7 and prevents unauthorized write of the firmware. COPYRIGHT: (C)2004,JPO&NCIPI