Vehicle information rewriting system
First Claim
1. A vehicle information rewriting system having a vehicle control unit and a rewriting tool, wherein the vehicle control unit has a main controller with a CPU for performing a control process of vehicular electric devices based on an execution of a predetermined software program under control of the main controller, wherein the rewriting tool is removably connected to the vehicle control unit through a communication unit as a data sender, and wherein the rewriting tool rewrites a memory content of a vehicle information storage that is implemented by using a nonvolatile memory for storing vehicle information including the software program based on a rewriting data sent from the rewriting tool through the communication unit,the rewriting tool comprising:
- an operation mode switching unit which makes switching between a rewriting permitted mode in which rewriting of data stored in the vehicle information storage is permitted and a rewriting restricted mode in which rewriting of data stored in the vehicle information storage is restricted relative to the rewriting permitted mode;
a wireless polling unit which, when the rewriting tool is used for rewriting operation, wirelessly polls a wireless authentication medium for detecting the wireless authentication medium mandatorily in possession of an authorized user of the rewriting tool; and
a mode switch ordering unit which orders the operation mode switching unit to switch to the rewriting permitted mode on condition of a successful detection of the wireless authentication medium through the wireless polling.
1 Assignment
0 Petitions
Accused Products
Abstract
A rewriting tool for rewriting a content of a nonvolatile memory including vehicle information and the like provides a supplemental authentication process that detects a wireless authentication medium associated to an authorized rewriting tool user by wireless polling on an unconditional basis besides authenticating the authorized rewriting tool user based on an input from the rewriting tool for the purpose of an improved security.
68 Citations
14 Claims
-
1. A vehicle information rewriting system having a vehicle control unit and a rewriting tool, wherein the vehicle control unit has a main controller with a CPU for performing a control process of vehicular electric devices based on an execution of a predetermined software program under control of the main controller, wherein the rewriting tool is removably connected to the vehicle control unit through a communication unit as a data sender, and wherein the rewriting tool rewrites a memory content of a vehicle information storage that is implemented by using a nonvolatile memory for storing vehicle information including the software program based on a rewriting data sent from the rewriting tool through the communication unit,
the rewriting tool comprising: -
an operation mode switching unit which makes switching between a rewriting permitted mode in which rewriting of data stored in the vehicle information storage is permitted and a rewriting restricted mode in which rewriting of data stored in the vehicle information storage is restricted relative to the rewriting permitted mode; a wireless polling unit which, when the rewriting tool is used for rewriting operation, wirelessly polls a wireless authentication medium for detecting the wireless authentication medium mandatorily in possession of an authorized user of the rewriting tool; and a mode switch ordering unit which orders the operation mode switching unit to switch to the rewriting permitted mode on condition of a successful detection of the wireless authentication medium through the wireless polling. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
Specification