发明名称 |
INFORMATION PROCESSING SEMICONDUCTOR DEVICE, DEBUG PERMISSION KEY DEVICE AND INFORMATION PROCESSING SEMICONDUCTOR SYSTEM |
摘要 |
PROBLEM TO BE SOLVED: To protect security of embedded software on a product by permitting a software developing operation only to a normal software developer having an electronic key. SOLUTION: This information processing semiconductor device 100 is provided with and other than that, a debug permission key interface 111 to input an electronic key signal 131a from an external debug permission key device 131, a key detecting circuit 110 to detect a key from the inputted electronic key signal 131a and a collation circuit 109 to collate the detected key with an ID 108a intrinsic to the information processing semiconductor device other than a CPU 101, a memory 102, a multi-purpose debugger interface 105. The multi-purpose debugger interface 105 selectively validates or invalidates a debugger interface 105 based on a collation result signal 109a of the collation circuit 109. |
申请公布号 |
JP2002341956(A) |
申请公布日期 |
2002.11.29 |
申请号 |
JP20010150232 |
申请日期 |
2001.05.21 |
申请人 |
SONY CORP |
发明人 |
ARAI HIROAKI;OKA SHINICHI;OKUDA TETSUYA |
分类号 |
G06F12/14;G06F1/00;G06F21/22;G06F21/24;(IPC1-7):G06F1/00 |
主分类号 |
G06F12/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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