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Fault detection and recovery device used in a radiation imaging information processing system

  • US 5,077,768 A
  • Filed: 02/20/1990
  • Issued: 12/31/1991
  • Est. Priority Date: 02/20/1989
  • Status: Expired due to Term
First Claim
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1. A support device for use with a radiation image information processing system which processes a radiation-transmission image into an image signal and generates a visible image from the image signal, the radiation image information processing system having a control device including a CPU, said support device comprising:

  • program executing information storing means for successively storing addresses and instructions from said control device, which are executed by the CPU in the support device,;

    fault detecting means for detecting a fault of the radiation image information processing system and generating a fault detection signal indicative of the fault;

    storage instructing means for instructing said program executing information storing means to store an address and an instruction thereof in response to the fault detection signal from said fault detecting means,said stored address and instruction corresponding to the address and instruction executed by the CPU at the time a fault occurs, thereby recording contents of a status register and control registers of the CPU at the time of fault and storing chronological data regarding the system failure,said support device being arranged physically separate and detachable from the image processing system; and

    gate means for controlling which instructions said CPU executes, wherein said gate means switches the instructions executed by the CPU from an image data processing program store din said control device to a recovery program stored in said program executing information storing means, when a fault is detected, and allows image processing operations to continue based upon said recovery program.

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