Title:
TRANSITION DETECTION CIRCUIT
Document Type and Number:
WIPO Patent Application WO/1996/031755
Kind Code:
A1
Abstract:
A detector (1) outputs a signal e1 corresponding to the operation of an object having an operation characteristic in which a transition from a first state to a second state occurs. A first state detection circuit (2) generates a first output signal SA corresponding to the first state on the basis of the signal e1 supplied thereto from the detector (1). A second state detection circuit (3) generates a second output signal SB corresponding to the second state on the basis of the signal supplied thereto from the detector (1). The second output signal SB is generated only when a transition occurs normally from the first state to the second state and during the period in which the first output signal SA is active. A state judgement circuit (4) generates a state judgement output signal Z under the condition that both of the first and second output signals SA and SB have a period in which they are simultaneously at a high level.
Inventors:
FUTSUHARA KOICHI (JP)
SHIRAI TOSHIHITO (JP)
SHIRAI TOSHIHITO (JP)
Application Number:
PCT/JP1996/000585
Publication Date:
October 10, 1996
Filing Date:
March 08, 1996
Export Citation:
Assignee:
NIPPON SIGNAL CO LTD (JP)
FUTSUHARA KOICHI (JP)
SHIRAI TOSHIHITO (JP)
FUTSUHARA KOICHI (JP)
SHIRAI TOSHIHITO (JP)
International Classes:
G01D5/244; G01D5/245; G01P3/00; G01P3/486; G01P13/00; G01R31/00; G08B19/00; (IPC1-7): G01D1/10; G01P13/00
Foreign References:
| JPH0236782A | 1990-02-06 |
Other References:
See also references of EP 0764829A4
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