Title:
ノード装置および車両ネットワークシステム
Document Type and Number:
Japanese Patent JP4941500
Kind Code:
B2
Abstract:
An in-vehicle network system includes plural electronic control units data-communicably connected via a network. The electronic control units include a master unit and a node apparatus composed of electronic control units other than master unit. In the node apparatus, a node time locally used as a reference time by the node apparatus is produced, and a system reference time is received from the master unit via the network. A node time rate, which is a rate of change of the node time per predetermined time period, is calculated based on changes in the node time. A reference time rate, which is a rate of change of the system reference time per the predetermined time period, is also calculated based on changes in the received system reference. The node time production is controlled such that the node time reduces a difference between the node and reference time rates.
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Inventors:
Watanabe
Application Number:
JP2009100839A
Publication Date:
May 30, 2012
Filing Date:
April 17, 2009
Export Citation:
Assignee:
株式会社デンソー
International Classes:
H04L7/00; B60R16/023
Domestic Patent References:
| JP2004304809A |
Attorney, Agent or Firm:
Nagoya International Patent Service Corporation