Invention Grant
US07684926B2 Electronic control apparatus having first microcomputer which forwards externally supplied updating data to a second microcomputer having a lower data receiving performance than the first microcomputer
有权
具有第一微型计算机的电子控制装置，该第一微型计算机向外部提供的更新数据转发到具有比第一微型计算机低的数据接收性能的第二微型计算机
- Patent Title: Electronic control apparatus having first microcomputer which forwards externally supplied updating data to a second microcomputer having a lower data receiving performance than the first microcomputer
- Patent Title (中): 具有第一微型计算机的电子控制装置，该第一微型计算机向外部提供的更新数据转发到具有比第一微型计算机低的数据接收性能的第二微型计算机
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Application No.: US11385697Application Date: 2006-03-22
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Publication No.: US07684926B2Publication Date: 2010-03-23
- Inventor: Kazuya Okamoto
- Applicant: Kazuya Okamoto
- Applicant Address: JP Kariya
- Assignee: DENSO Corporation
- Current Assignee: DENSO Corporation
- Current Assignee Address: JP Kariya
- Agency: Nixon & Vanderhye P.C.
- Priority: JP2005-081661 20050322
- Main IPC: G06F19/00
- IPC: G06F19/00 ; G06G7/70 ; G06F15/167 ; G06F15/16
Abstract:
An electronic control apparatus such as an ECU of a motor vehicle contains first and second microcomputers, with the first microcomputer having a substantially higher data receiving performance than the second microcomputer. Data for updating a ROM of the second microcomputer, transmitted to the first microcomputer from an external apparatus at a relatively high data rate, are temporarily stored in RAM by the first microcomputer and then transmitted to the second microcomputer at a rate which is appropriate for the receiving performance of the second microcomputer.
Public/Granted literature
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