Vehicle-mounted data rewriting control system
First Claim
1. A vehicle-mounted data rewriting control system, which is constructed as to rewrite, based upon rewrite data supplied from an external unit through radio communication, at least either a control program or control data for controlling vehicle-mounted equipment stored in a rewritable region of a nonvolatile memory, comprising:
- storage means for temporarily storing the rewrite data at time of rewriting at least either the control program or the control data;
determining means for determining properness of the rewrite data stored in the storage means; and
rewrite control means for rewriting at least either the control program or the control data by using the rewrite data on condition that the rewrite data stored in the storage means are determined by the determining means to be proper.
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Accused Products
Abstract
A vehicle-mounted data rewriting control system includes a master control system. In rewriting data in electronic control systems, the master control unit first obtains through radio communication rewrite data from an external management center which holds and manages VIN codes of vehicles and version information of control programs. The supplied data are temporarily stored in a memory unit of the master control system, and the stored rewrite data are determined for their properness. By using the stored rewrite data, the data in the electronic control systems are rewritten on condition that the rewrite data stored in the memory unit are proper.
62 Citations
21 Claims
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1. A vehicle-mounted data rewriting control system, which is constructed as to rewrite, based upon rewrite data supplied from an external unit through radio communication, at least either a control program or control data for controlling vehicle-mounted equipment stored in a rewritable region of a nonvolatile memory, comprising:
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storage means for temporarily storing the rewrite data at time of rewriting at least either the control program or the control data;
determining means for determining properness of the rewrite data stored in the storage means; and
rewrite control means for rewriting at least either the control program or the control data by using the rewrite data on condition that the rewrite data stored in the storage means are determined by the determining means to be proper. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification