Excavating
Patent
1981-12-10
1984-06-26
Malzahn, David H.
Excavating
364200, G06F 1122
Patent
active
044569947
ABSTRACT:
A data processing system, comprising several distributed processing units which are connected to a remote central monitor and test station in which the state of each distributed processing unit is monitored by the transmission of test and diagnostic signals. Each processing unit comprises a simulation unit which comprises a microprocessor and test sequences for decoding and simulating these commands and, after their execution by the central unit of the processing unit, for transmitting the results to the central station for analysis. Moreover, the simulation unit is capable of detecting errors in the simulation and the execution of the commands and of supplying the central station with a warning.
REFERENCES:
patent: 3818199 (1974-06-01), Grossmann et al.
patent: 3879712 (1975-04-01), Edge et al.
patent: 3898621 (1975-08-01), Zelinski et al.
patent: 3932843 (1976-01-01), Trelut et al.
Helfer, "Structure of Performance Monitor for Distributed Computer System", IBM Tech. Disclosure Bulletin, vol. 20, No. 11B, Apr. 1978, pp. 5060-5065.
Briody Thomas A.
Cannon, Jr. James J.
Haken Jack E.
Malzahn David H.
U.S. Philips Corporation
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