Excavating
Patent
1993-03-22
1995-03-07
Atkinson, Charles E.
Excavating
371 151, 371 205, 370 13, 370 15, H04J 116, G01R 3128
Patent
active
053966180
ABSTRACT:
A method of self-diagnosis in a digital signal processing system. The digital signal processing system comprises a digital signal processing apparatus which includes a plurality of electronic components for processing signals in a plurality of channels. An output of the digital signal processing apparatus is coupled to an input of the digital signal processing apparatus. A central processing unit causes one after another of the electronic components to generate a predetermined signal while the other electronic parts are in a condition for passing the predetermined signal therethrough. The CPU then checks whether or not the output of the digital signal processing apparatus is correct. When the output of the digital signal processing apparatus is not correct, the central processing unit outputs a unique reference number for the electronic component from which the predetermined signal was then generated. The reference number for the electronic component is visually indicated on a bar graph meter.
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patent: 5265089 (1993-11-01), Yonehara
Fukui Takao
Murakami Yoshihiro
Nomoto Kazutoshi
Atkinson Charles E.
De'cady Albert
Frommer William S.
Sinderbrand Alvin
Sony Corporation
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