Title:
電子回路内のデータメモリへのアクセスを制御するための方法及び装置
Document Type and Number:
Japanese Patent JP2010501921
Kind Code:
A
Abstract:
The invention relates to a method, particularly in a tachograph (1) for a motor vehicle, for controlling access to a data store (4) which has a first memory area (2) and a second memory area (3) in an electronic circuit (5). To increase data integrity, the invention proposes that the first memory area (2) be provided for storing data which are to be protected with a higher level of security and that the second memory area (3) be provided for storing data which are to be protected with a lower level of security, that a supply voltage be measured and that if the supply voltage is below a prescribed first voltage threshold then access to the first memory area (2) is blocked. The invention also relates to an apparatus, particularly a tachograph (1) for a motor vehicle, for carrying out the aforementioned method with an electronic circuit (5) which has a data store (4).
Inventors:
Klaus Hoffmann
Jurgen Litvin
Horst noether
Armin Oberkfell
Jurgen Litvin
Horst noether
Armin Oberkfell
Application Number:
JP2009525044A
Publication Date:
January 21, 2010
Filing Date:
August 20, 2007
Export Citation:
Assignee:
Continental Automotive GmbH
International Classes:
G06F12/16
Attorney, Agent or Firm:
Takuya Kuno
Toshiomi Yamazaki
Kimihiro Hoshi
Reinhard Einsel
Toshiomi Yamazaki
Kimihiro Hoshi
Reinhard Einsel