JPH03212778A - Pen type bar code reader - Google Patents

Pen type bar code reader

Info

Publication number
JPH03212778A
JPH03212778A JP2008728A JP872890A JPH03212778A JP H03212778 A JPH03212778 A JP H03212778A JP 2008728 A JP2008728 A JP 2008728A JP 872890 A JP872890 A JP 872890A JP H03212778 A JPH03212778 A JP H03212778A
Authority
JP
Japan
Prior art keywords
data
bar code
voids
light
spots
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
Application number
JP2008728A
Other languages
Japanese (ja)
Inventor
Toyokazu Kato
豊和 加藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seiko Epson Corp
Original Assignee
Seiko Epson Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Seiko Epson Corp filed Critical Seiko Epson Corp
Priority to JP2008728A priority Critical patent/JPH03212778A/en
Publication of JPH03212778A publication Critical patent/JPH03212778A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To improve a reading rate by arranging two or more projecting parts and photodetecting parts so as to reduce reading errors when voids or spots on a bar code symbol. CONSTITUTION:Light beams projected from the projection part constituted of two LEDs 1, 2 and two lenses 3, 4 are reflected or absorbed by the bar code symbol 9, reflected and absorbed by two filters 5, 6 and then inputted to the photodetecting part constituted of the two filters 5, 6 and photosensors 7, 8. The inputted beams are converted into electric signals by the photosensors 7, 8 and decoded to alphanumeric data by a decoding part. The coincidence of both decoded data is checked by a control part. If one data can not be read out, the other read data are outputted with priority. Consequently, the number of reading errors can be reduced even if voids or spots exist on the bar code symbols.

Description

【発明の詳細な説明】 ［産業上の利用分野］ 不発明は、ペン型バーコードリーダーの構造に関する。[Detailed description of the invention] [Industrial application field] The invention relates to the structure of a pen-type barcode reader.

［従来の技術］ 従来のペン型バーコードリーダーの構造は、第３図に示
す様に１つの発光ダイオード１より発っせられた光はレ
ンズ３により絞り込まれバーコード７ンボル９により反
射あるいは吸収され、フィルター５を通って光学センサ
ー７に入力されていた。[Prior Art] The structure of a conventional pen-type barcode reader is as shown in FIG. , passed through a filter 5 and was input to an optical sensor 7.

［発明が解決しようとする課題］ しかし、前述の従来技術で、は第４図に示すように、バ
ーコードシンボル上にボイド１０あるいはシミなどがあ
り、リーダーがその上を走査した場合解読が出来な（な
るという問題点を有する。[Problems to be Solved by the Invention] However, in the prior art described above, as shown in FIG. It has the problem of becoming.

そこで本発明はこのような問題点を解決するもので、そ
の目的とするところはバーコードシンボル上にボイドあ
るいはシミなどがあっても安定して解読が行なえるペン
型バーコードリーダーを提供するところにある。The present invention is intended to solve these problems, and its purpose is to provide a pen-type barcode reader that can stably decode even if there are voids or spots on the barcode symbol. It is in.

［課題を解決するための手段］ 本発明のペン型リーダーは、投光部及び受光部を２つ以
上設けた事を特徴とする。[Means for Solving the Problems] The pen-type reader of the present invention is characterized by having two or more light projecting sections and two or more light receiving sections.

［実施例コ 以下に本発明の実施例を図面をもとに説明する。[Example code] Embodiments of the present invention will be described below with reference to the drawings.

第１図において、２つの発光ダイオ−トド２．２つのレ
ンズ３・４により構成された投光部より発っせられた光
は、バーコードシンボル９により反射又は吸収され、２
Ｑのフィルタ５・６と２つの光センサ−７・８により構
成された受光部にそれぞれ入力されるー。入力された光
は光センサーにより電気量に変換された後、解読部によ
り英数字のデータに解読される。解読されたデータはコ
ントロール部によりデータの一致を調べる。また、一方
のデータが読み取れなかった時には、読み取れたもう一
方のデータを優先して出力する。In FIG. 1, light emitted from a light projecting unit composed of two light emitting diodes 2 and two lenses 3 and 4 is reflected or absorbed by a barcode symbol 9, and the light is reflected or absorbed by a barcode symbol 9.
The light is inputted to a light receiving section composed of Q filters 5 and 6 and two optical sensors 7 and 8, respectively. The input light is converted into an electrical quantity by the optical sensor, and then decoded into alphanumeric data by the decoding section. The decoded data is checked by the control unit for data matching. Moreover, when one data cannot be read, the other data that can be read is given priority and output.

以上のような実施例においてバーコードシンボル９上に
ボイドやシミなどがある時のペン型リーダーの読み取り
は、第２図に示すように、リーダーが発光部及び受光部
を２つ備えている事により片方の投光部がバーコード上
のボイドやシミを走査してデータを読み取る事が出来な
くとも、他方の投光部がボイドやシミを回避する事によ
りデータを読み取る事が出来る。In the above-described embodiment, when there is a void or a stain on the barcode symbol 9, the pen-type reader can read the data if the reader is equipped with two light-emitting parts and two light-receiving parts, as shown in Fig. 2. Therefore, even if one of the light projectors cannot scan voids or spots on the barcode and read the data, the other light projector can read the data by avoiding the voids or spots.

［発明の効果コ 本発明は、以上説明したように、投光部及び受光部を２
つ以上設けるという簡単な構造によってバーコードシン
ボル上にボイドやシミがある時の読み取りエラーを減少
し、読み取り率を向上させるという効果がある。また２
つ以上データを読み取れた場合にも、データの一致を見
る事によりデータの信頼性が向上するという効果がある
。[Effects of the Invention] As explained above, the present invention has two light emitting parts and a light receiving part.
The simple structure of providing two or more barcode symbols has the effect of reducing reading errors when there are voids or spots on the barcode symbol and improving the reading rate. Also 2
Even if more than one data can be read, the reliability of the data can be improved by checking that the data match.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は、本発明のペン型バーコードリーダー構造図。 第２図は本発明のペン型バーコードリーダーでバーコー
ドシンボル上を走査した時の説明図。第３図は従来のペ
ン型バーコードリーダーの構造図。第４図は従来のペン
型バーコードリーダーでバーコードシンボル上を走査し
た時の説明図である。 １・・・・・・・・・発光ダイオード１２・・・・・・
・・・発光ダイオード２３・・・・・・・・・光学レン
ズ１ ４・・・・・・・・・光学レンズ２ ５・・・・・・・−・フィルタ１ ６・・・・・・・・・フィルタ２ ７・・・・・・・・・光センサ−１ ８・・・・・・・・・光センサ−２ ？　−−−、−１，−バーコードシンボル１０・・・・
・・ボイドFIG. 1 is a structural diagram of a pen-type barcode reader of the present invention. FIG. 2 is an explanatory diagram when a barcode symbol is scanned with the pen-type barcode reader of the present invention. Figure 3 is a structural diagram of a conventional pen-type barcode reader. FIG. 4 is an explanatory diagram when a barcode symbol is scanned with a conventional pen-type barcode reader. 1...... Light emitting diode 12...
...Light emitting diode 23...Optical lens 1 4...Optical lens 2 5...Filter 1 6... ... Filter 2 7 ...... Light sensor - 1 8 ...... Light sensor - 2 ? ---, -1, -barcode symbol 10...
··void

Claims (1)

【特許請求の範囲】[Claims] ペン型バーコードリーダーにおいて、投光部及び受光部
を２つ以上設けた事を特徴とするペン型バーコードリー
ダー。A pen-shaped barcode reader characterized by having two or more light emitting sections and two or more light receiving sections.
JP2008728A 1990-01-18 1990-01-18 Pen type bar code reader Pending JPH03212778A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2008728A JPH03212778A (en) 1990-01-18 1990-01-18 Pen type bar code reader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008728A JPH03212778A (en) 1990-01-18 1990-01-18 Pen type bar code reader

Publications (1)

Publication Number Publication Date
JPH03212778A true JPH03212778A (en) 1991-09-18

Family

ID=11701013

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2008728A Pending JPH03212778A (en) 1990-01-18 1990-01-18 Pen type bar code reader

Country Status (1)

Country Link
JP (1) JPH03212778A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5712470A (en) * 1990-03-13 1998-01-27 Symbol Technologies, Inc. Bar code scanner utilizing multiple light beams output by a light beam splitter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5712470A (en) * 1990-03-13 1998-01-27 Symbol Technologies, Inc. Bar code scanner utilizing multiple light beams output by a light beam splitter
US5912450A (en) * 1990-03-13 1999-06-15 Symbol Technologies, Inc. Bar code scanner utilizing time-multiplexed scan lines

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