JPH027592U

JPH027592U -

Info

Publication number: JPH027592U
Application number: JP8569188U
Authority: JP
Priority date: 1988-06-30
Filing date: 1988-06-30
Publication date: 1990-01-18

Description

[Brief explanation of the drawing]

第１図はこの考案の機能ブロツク図、第２図は
実施例を適用したハンドスキヤナの外観図、第３
図は発光素子、受光素子の機能を説明するための
図、第４図はハンドスキヤナの回路ブロツク図、
第５図は回数メモリの記憶内容を示す図、第６図
はノイズ光の受光周期の観測処理を示すフローチ
ヤート、第７図は第６図の処理を具体的に説明す
るための図、第８図はバーコード入力処理を示す
フローチヤート、第９図は第８図における発光素
子の発光タイミングのシフト処理を説明するため
の図である。１……ＣＰＵ、２……ＲＯＭ、６……時計回路
、Ａ３……対物検知センサ、Ａ３_ａ……発光素子
、Ａ３_ｂ……受光素子。 Figure 1 is a functional block diagram of this invention, Figure 2 is an external view of a hand scanner to which the embodiment is applied, and Figure 3 is a functional block diagram of this invention.
The figure is a diagram for explaining the functions of the light-emitting element and the light-receiving element, and Figure 4 is a circuit block diagram of the hand scanner.
FIG. 5 is a diagram showing the stored contents of the number memory, FIG. 6 is a flowchart showing the process of observing the reception period of noise light, and FIG. 7 is a diagram specifically explaining the process of FIG. 6. FIG. 8 is a flowchart showing the barcode input process, and FIG. 9 is a diagram for explaining the process of shifting the light emission timing of the light emitting element in FIG. 1... CPU, 2... ROM, 6... Clock circuit, A3... Objective detection sensor, A3 _a ... Light emitting element, A3 _b ... Light receiving element.

Claims

[Claims for Utility Model Registration] A light emitting means, a light receiving means, an observation means for observing the light reception period of the noise light received by the light receiving means, and a light reception period of the noise light observed by the observation means. , a control means for controlling the light emission timing of the light emitting means in order to avoid synchronization of the light from the light emitting means with the light reception timing by the light receiving means; An optical object detection device comprising: detection means for detecting the presence or absence of an object based on the presence or absence of light received by the light receiving means.