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EP0445958A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

An automobile integrated wiring system

Assignee: Hitachi Ltd
•
Filing: 1991-02-27
•
Granted: —
•
Expires: 2011-02-27
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Abstract

Abstract An automobile integrated wiring system has a central control unit (10) adapted to act upon operator control instructions. The central control unit (10) is arranged to provide output signals over a transmission path (A) to a plurality of controllable peripheral devices (20, 30) each of the peripheral devices being arranged to perform a control function of the automobile. At least one of the peripheral devices (20) includes detecting means for detecting an abnormality in the central control unit (10) and means (1 - 4) adapted to accept operator control instructions over the transmission path when the central control unit (10) is detected to have an abnormality so that an appliance (7a - 8c) associated with the peripheral device may be operated by said peripheral device in the absence of instruction from the central control unit.

Inventors

  • 👤 Kazumasa C/O Sawa Works Of Hitachi Ltd. Sugiura

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-31 05:43
CPC Classifications
B; B60; B60R; B60R16/00; B60R16/02; B60R16/03; B60R16/0315; B60R2016/0322

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 115 words
An automobile integrated wiring system having a central control unit (10) adapted to act upon operator control instructions and to provide output signals indicative thereof over a transmission path (A) to a plurality of controllable peripheral device means (20, 30, 7a - 8c), each of which is adapted to perform a control function of the automobile, characterized in that at least one of the peripheral devices (20) includes detecting means (105) for detecting an abnormality in said central control unit (10), and means (1 - 4) adapted to accept operator control instructions over said transmission path (A) when said central control unit (10) is detected to have an abnormality whereby said control function is maintained.
Claim 2
Dependent Claim 44 words
A system as claimed in claim 1 wherein said peripheral device means includes a microcomputer device (4) adapted to determine abnormality in said central control unit (10) and to thereupon actuate an automobile appliance (20, 30Q - W) or control other peripheral device means.
Claim 3
Dependent Claim 57 words
A system as claimed in claim 2 wherein said appliance is one of a headlamp, a rear lamp, a brake stop lamp, a turn indicator lamp, a turn indicator switch, a door lock, a window movement actuator, a window washer pump, a wiper actuator, an external mirror actuator, an air-condition actuator, a seat actuator, a navigation system.
Claim 4
Independent Claim 85 words
A system as claimed in any preceding claim wherein said central control unit (10) includes means for outputting a pulse pattern and said peripheral device means (20) includes detector means (107) for analysing said pulse pattern and for determining if said pattern is interrupted in excess of a predetermined time whereby if said detector means determines an interruption exists, an abnormality in said central control unit is solved and said peripheral device means directly accepts instructions from said operator for controlling said appliance associated therewith.

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