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US4305658: Moving object inspection system

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Filing Information

Inventor(s) Hajime Yoshida ·
Assignee(s) Hajime Industries Ltd. ·
Attorney/Agent(s) Thomas R. Morrison ·
Primary Examiner Rosenberger; R. A. ·
Application Number US6109976
Filing date 01/07/1980
Issue date 12/15/1981
Predicted expiration date 01/07/2000
U.S. Classifications 356/23  · 358/106  ·
International Classifications G01P 340  ·
Kind CodeA
International Classifications 35623;372;388;394 ·
Foreign Priority JP544969 - 01/19/1979 ·
5 Claims, No Drawings


Abstract

A moving object inspection system is disclosed in which a stroboscope radiation is made on an object to be inspected, the object is picked up by a television camera, a position detection device provides a position detection signal when the object arrives at a specified position, and an object inspection apparatus is provided. In this apparatus the period including before and after the horizontal synchronizing signal from the television camera is set as an inspection intermission period during which no inspection for the object is conducted, and the stroboscope radiation is carried out at the same timing as the position detection signal when the position detection signal arrives at the same time as the vertical synchronizing signal from the television camera, or at the beginning of the inspection intermission period immediately after the position detection signal when the position detection signal arrives at any other time than with the vertical synchronizing signal. A moving object inspection system further sets an inspection inhibit period of the object immediately after the stroboscope radiation.

Independent Claims | See all claims (5)

  1. 1. A moving object inspection apparatus comprising:(a) an image sensing device;(b) said image sensing device being of the scanning type in which a video signal, a horizontal synchronizing signal and a vertical synchronizing signal are produced;(c) a stroboscope which is effective when energized to illuminate said moving object with a pulse of light short enough to produce a substantially static image of said moving object in said image sensing device;(d) a position detector which is effective to produce a position detection signal when said moving object reaches a predetermined position;(e) an object inspection apparatus for inspecting said video signal;(f) means for inhibiting said object inspection apparatus for horizontal intermission periods extending from before the beginning of each of said horizontal synchronizing signals until after the end thereof and for vertical intermission periods extending from before the beginning of each of said vertical synchronizing signals until after the end thereof;(g) means for energizing said stroboscope;(h) said means for energizing being responsive to the simultaneous occurrence of said position detection signal with said vertical synchronizing signal; and(i) said means for energizing being further responsive to the beginning of the first horizontal intermission period following occurrence of said position detection signal when said position detection signal occurs between successive vertical synchronizing signals.

References Cited

U.S. Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
US3275744 SPRAYING SYSTEMS CO Dietrich Sep 1966
US3390229 RAYTHEON EDUCTION COMPANY Williams Jun 1968
US3577153 TOKYO SHIBAURA ELECTRIC CO Yagi et al. May 1971

Referenced By

Document NumberAssigneeInventorsIssue/Pub Date
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US7307713 Vistec Semiconductor Systems GmbH Albert Kreh et al. Dec 2007
US8083604 SSD Company Limited Hiromu Ueshima et al. Dec 2011
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