JPH0267453U - - Google Patents
Info
- Publication number
- JPH0267453U JPH0267453U JP14447488U JP14447488U JPH0267453U JP H0267453 U JPH0267453 U JP H0267453U JP 14447488 U JP14447488 U JP 14447488U JP 14447488 U JP14447488 U JP 14447488U JP H0267453 U JPH0267453 U JP H0267453U
- Authority
- JP
- Japan
- Prior art keywords
- timing signal
- laser beam
- symbol
- reading device
- read
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 3
- 230000010355 oscillation Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Description
第１図は本考案の光学式記号読取装置の一実施
例の構成図、第２図は第１図の実施例中の光電検
知器７の出力するトリガ信号２１と、タイマ回路
８の出力するタイミング信号２２の波形図、第３
図は他の実施例の構成図、第４図は光学式記号読
取装置の従来例の構成図である。
１……可視光半導体レーザ（ＬＤ）、２……収
束用光源、３……孔あきミラー、４……多面回転
ミラー、５……走査線、６……ラベル面、７……
光電検知器、８……タイマ回路、９……駆動制御
回路、１０……集光用光学系、１１……光電変換
素子、１２……ビデオ増幅器、１３……解読部、
２１……トリガ信号、２２……タイミング信号、
３７……検出用バーコードラベル。
FIG. 1 is a block diagram of an embodiment of the optical symbol reading device of the present invention, and FIG. 2 shows the trigger signal 21 output from the photoelectric detector 7 and the output of the timer circuit 8 in the embodiment of FIG. Waveform diagram of timing signal 22, third
This figure is a block diagram of another embodiment, and FIG. 4 is a block diagram of a conventional example of an optical symbol reading device. DESCRIPTION OF SYMBOLS 1... Visible light semiconductor laser (LD), 2... Convergence light source, 3... Perforated mirror, 4... Multi-faceted rotating mirror, 5... Scanning line, 6... Label surface, 7...
Photoelectric detector, 8... Timer circuit, 9... Drive control circuit, 10... Light collecting optical system, 11... Photoelectric conversion element, 12... Video amplifier, 13... Decoding section,
21...Trigger signal, 22...Timing signal,
37... Barcode label for detection.
Claims (1)
光学式記号読取装置において、 レーザビームによる読取対象記号の読取終了時
点を検知する検知手段と、 前記検知手段の出力を受けたとき、一定の期間
中、タイミング信号を出力するタイマ回路と、 前記タイミング信号を入力されている間、レー
ザビームの発振を停止させる制御手段とを有する
ことを特徴とする光学式記号読取装置。[Scope of Claim for Utility Model Registration] An optical symbol reading device that reads a symbol to be read by scanning with a laser beam, comprising a detection means for detecting the end point of reading the symbol to be read by the laser beam, and an output of the detection means. 1. An optical symbol reading device comprising: a timer circuit that outputs a timing signal during a certain period when the timing signal is input; and a control means that stops oscillation of a laser beam while the timing signal is input.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14447488U JPH0267453U (en) | 1988-11-04 | 1988-11-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14447488U JPH0267453U (en) | 1988-11-04 | 1988-11-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0267453U true JPH0267453U (en) | 1990-05-22 |
Family
ID=31412221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14447488U Pending JPH0267453U (en) | 1988-11-04 | 1988-11-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0267453U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04276882A (en) * | 1991-03-04 | 1992-10-01 | Fujitsu Ltd | Bar code demodulation system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52129236A (en) * | 1976-04-21 | 1977-10-29 | Nippon Denso Co Ltd | Reading control method |
| JPS5540413B2 (en) * | 1975-04-08 | 1980-10-17 | ||
| JPS58159251A (en) * | 1982-03-17 | 1983-09-21 | Fujitsu Ltd | Semiconductor laser protecting method |
| JPS62127979A (en) * | 1985-11-28 | 1987-06-10 | Matsushita Electric Ind Co Ltd | Method for controlling projection light source of bar code reader |
-
1988
- 1988-11-04 JP JP14447488U patent/JPH0267453U/ja active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5540413B2 (en) * | 1975-04-08 | 1980-10-17 | ||
| JPS52129236A (en) * | 1976-04-21 | 1977-10-29 | Nippon Denso Co Ltd | Reading control method |
| JPS58159251A (en) * | 1982-03-17 | 1983-09-21 | Fujitsu Ltd | Semiconductor laser protecting method |
| JPS62127979A (en) * | 1985-11-28 | 1987-06-10 | Matsushita Electric Ind Co Ltd | Method for controlling projection light source of bar code reader |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04276882A (en) * | 1991-03-04 | 1992-10-01 | Fujitsu Ltd | Bar code demodulation system |
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