Electrical pulse counters – pulse dividers – or shift registers: c – Applications – Measuring or testing
Patent
1982-11-29
1985-12-17
Heyman, John S.
Electrical pulse counters, pulse dividers, or shift registers: c
Applications
Measuring or testing
324 73R, G04F 1000
Patent
active
045596360
ABSTRACT:
Logic analyzer adapter includes a time measuring adapter. Only a subset of the input channels of the signal analyzer are used to store input data when an event occurs, i.e., when one or more of the binary input signals change their value. A time counter is provided for measuring the time that has elapsed between two consecutive events. The contents of the time counter are transferred to the logic analyzer on the remaining input channels. In another mode of operation, the signal on a predetermined input channel is used to control the storing operation. The time counter is reset after each storing operation. In still another mode of operation, the signal on a predetermined channel can be used to inhibit or to allow the storing of the signals on the remaining input channels.
REFERENCES:
patent: 4008389 (1977-02-01), Brunin et al.
patent: 4250562 (1981-02-01), Haag et al.
patent: 4468746 (1984-08-01), Davis
patent: 4484329 (1984-11-01), Slamka et al.
patent: 4523289 (1985-06-01), Soma et al.
Mar. 1981 Computer Design article, "Logic Analyzers Simplify System Integration Tasks", by P. Dittman, D. Glasby and C. Benenati, pp. 119-126.
Elektronic Article, vol. 27, No. 3, 1978, by M. V. Dolch, "Logikanalyse-Geratetechnik und Anwendungen", pp. 40-46, 65.
Sep. 1980 Electronic Engineering article, vol. 52, No. 642, London, "Logic Analysers", pp. 172-203.
Heyman John S.
International Business Machines - Corporation
Ohralik K.
Wright Carl M.
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