公开(公告)号：US20020143409A1

公开(公告)日：2002-10-03

申请号：US09823005

申请日：2001-04-02

Applicant: DELPHI TECHNOLOGIES, INC.

Inventor： James Frank Patterson ,  Edward J. Wallner

IPC: G05B019/18 ,  G05B015/02

CPC classification number: G05B19/0426 ,  G05B2219/23308 ,  G05B2219/23338 ,  G05B2219/24142 ,  G05B2219/24151 ,  G05B2219/25265

Abstract: A flash programmable microprocessor-based control module is operated in a manner to protect the integrity of event data stored in the programmable memory of the module while permitting authorized manufacturing and field alteration of the programmable memory with a Download and Execute routine. The Download and Execute routine is resident in a designated sector of the module's read-only memory, and download access to the module's random access memory after module manufacture has been completed is denied. During manufacture of the module, and during field programming of the controller prior to the writing of event data, the programmable memory may be externally altered by an authorized service tool by transferring the Download and Execute routine from read-only memory to random access memory for execution by the module's microprocessor, and downloading the new data or code over a data link coupling the service tool to the module. After event data has been written to the programmable memory, external requests to alter the programmable or read-only memories are denied, and the transfer of the Download and Execute routine to random access memory is not permitted.

Abstract translation: 基于闪存可编程微处理器的控制模块以保护存储在模块的可编程存储器中的事件数据的完整性的方式操作，同时通过下载和执行例程允许对可编程存储器的授权制造和现场改变。 下载和执行例程驻留在模块只读存储器的指定扇区中，模块制造完成后下载对模块随机存取存储器的访问被拒绝。 在模块的制造期间以及在写入事件数据之前的控制器的现场编程期间，可编程存储器可以由授权的服务工具通过将下载和执行例程从只读存储器传送到随机存取存储器来进行外部改变 由模块的微处理器执行，并通过将服务工具耦合到模块的数据链路下载新的数据或代码。 事件数据写入到可编程存储器之后，外部请求改变可编程或只读存储器被拒绝，并且不允许将下载和执行程序传送到随机存取存储器。