Title:
DIGITAL CONTROL DEVICE
Document Type and Number:
Japanese Patent JPS59105104
Kind Code:
A
Abstract:
PURPOSE:To replace a defective substrate unexpensively in a saved space without using power supply division or a DC/DC converter by connecting the substrate to an external signal line by an element enabled to execute wired OR. CONSTITUTION:The substrate is connected to the external signal line by using the element enabled to execute wired OR and the titled device is provided with a circuit forcedly inhibiting an output from the element so as to prevent the signal line from disturbance at the charging/discharging of the substrate and preventing the generation of noises due to the charging/discharging of the substrate. For instance, control voltage is supplied from a power supply line through each control part 7 and each control information is inputted/outputted from a bus 5 through interface parts 6. Subsequently, the contents of a memory set up on a main operation/control circuit mounting substrate 1 are read out by a microprocessor to operate the contents on the basis of the information from input substrates 3. If one of the input substrates is failed, the defective substrate is separated and the operation is continued by other input substrates 3.
More Like This:
Inventors:
KOMIYAMA TADASAKI
Application Number:
JP21328582A
Publication Date:
June 18, 1984
Filing Date:
December 07, 1982
Export Citation:
Assignee:
TOSHIBA KK
International Classes:
G05B9/02; G06F1/18; G06F3/00; G06F11/00; (IPC1-7): G05B9/02; G06F1/00; G06F3/00
Domestic Patent References:
| JPS5395521A | 1978-08-21 | |||
| JPS5417603A | 1979-02-09 | |||
| JPS5721230B2 | 1982-05-06 |
Attorney, Agent or Firm:
Makoto Monda
Previous Patent: OUTPUT DEVICE OF CONTROL SIGNAL FOR ELECTRONIC CONTROL DEVICE
Next Patent: JPS59105105
Next Patent: JPS59105105