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Patent Searching and Data


Title:
SIGNAL STATE MONITOR METHOD
Document Type and Number:
Japanese Patent JP3134616
Kind Code:
B2
Abstract:

PURPOSE: To avoid a problem of making discrimination of an event of a signal change difficult and the deterioration in a line operating efficiency when a signal group in which plural signals change continuously Change in a short time is monitored with respect to the signal monitor and notice method where plural signal states are monitored by a sampling signal at a predetermined interval and detection of a signal change is reported to a host device.
CONSTITUTION: In a sampling time (2) a detecting a change in a signal (1) a by a sampling signal (2), monitor processing sets (3) a - for itself and other signals are set to the standby state up to a predetermined number of sampling times. Moreover, a predetermined number of sampling signals is counted to release the standby state of monitor processing, and when other signal changes (1) b - are detected at a sampling time (2) b, the monitor processing sets (3) a - are started as to the signals (1) b - simultaneously and plural signal change detection events are reported (5) to a host device in the lump after a predetermined condition is established (4).


Inventors:
Toshiaki Ibi
Yasuyuki Higashiura
Isao Sasazaki
Application Number:
JP21896193A
Publication Date:
February 13, 2001
Filing Date:
September 03, 1993
Export Citation:
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Assignee:
富士通株式会社
International Classes:
H04M3/22; H04L12/02; H04L12/24; H04L12/26; (IPC1-7): H04L12/24; H04L12/26; H04M3/22
Attorney, Agent or Firm:
Teiichi Igeta