Monitoring device for monitoring internal signals during...

Details Monitoring device for monitoring internal signals during... Monitoring device for monitoring internal signals during...

2008-03-04

2008-03-04

Barnes, Crystal J. (Department: 2121)

Data processing: generic control systems or specific application

Generic control system, apparatus or process

Having protection or reliability feature

C701S115000, C710S031000, C710S033000, C712S229000, C713S001000, C714S037000, C714S039000, C716S030000

Reexamination Certificate

active

11081270

ABSTRACT:
The invention provides a device for monitoring electronic circuit units during an initialization phase. The device has at least one internal data line (103) for forwarding internal data (105) in the electronic circuit unit (101) and at least one data connection line (104) for outputting the internal data from the electronic circuit unit (101) and for inputting external data (106) into the electronic circuit unit (101). A changeover unit (102), which is intended to change over the data connection line (104) either to the internal data line (103) or to internal signal lines (113), and a combinational logic unit (111) for combining an initialization signal (109), which is provided by the electronic circuit unit (101) to be monitored, with an external changeover signal (108), which is supplied via a changeover signal input (107) of the electronic circuit unit (101) to be monitored, are also provided. An activation signal (114), which is output by the changeover unit (102), is used to change over the data connection line to the internal signal lines (113) when the initialization signal (109) indicates an initialization mode of the electronic circuit unit (101).

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patent: 287402 (1988-10-01), None
patent: EP 0 467 719 (1992-01-01), None
German Office Action dated Jan. 17, 2005.

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