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Patent Searching and Data


Title:
TIME MEASURING APPARATUS
Document Type and Number:
Japanese Patent JP2001153978
Kind Code:
A
Abstract:

To provide a time measuring apparatus by which the time can be measured at a high speed while its detecting resolution is kept at a definite level.

In addition to a circuit constitution for time detection, a constitution which is used to measure the cycle of measuring input pulses PIN is installed. As an initial processing operation, the output of a switch SW2 is supplied to the side of a counter C4, and the cycle of the measuring input pulses PIN is measured. On the basis of its result, a microcomputer MP1 changes over a switch SW1, and the frequency dividing ratio of the measuring input pulses PIN is changed. The switch SW2 is instructed to change over the output, and the time is measured.


Inventors:
KUDO TAKAHIRO
NAKAMURA SATORU
Application Number:
JP33948499A
Publication Date:
June 08, 2001
Filing Date:
November 30, 1999
Export Citation:
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Assignee:
FUJI ELECTRIC CO LTD
International Classes:
G04F10/04; H03M1/60; (IPC1-7): G04F10/04; H03M1/60
Attorney, Agent or Firm:
Yoshiyuki Osuge