JPS62147063U - - Google Patents
Info
- Publication number
- JPS62147063U JPS62147063U JP3128986U JP3128986U JPS62147063U JP S62147063 U JPS62147063 U JP S62147063U JP 3128986 U JP3128986 U JP 3128986U JP 3128986 U JP3128986 U JP 3128986U JP S62147063 U JPS62147063 U JP S62147063U
- Authority
- JP
- Japan
- Prior art keywords
- photoelectric conversion
- reference potential
- electrical signal
- type
- converter
- 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
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 230000003287 optical effect Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Character Input (AREA)
Description
第１図は、本考案の一実施例によるＯＣＲの光
電変換回路を示す図、第２図ａは第１図の光電変
換素子からの出力波形を示す図、第２図ｂはピー
クホールド回路のゲート入力信号の入力波形を示
す図、第３図は従来のＯＣＲの光電変換回路を示
す図、第４図は第３図の光電変換素子からの出力
波形を示す図である。
１…帳票、２…走行面、３…レンズ、４…光電
変換素子、５…アンプ、６…Ａ／Ｄ変換器、７，
１１…ピークホールド回路、８…ＲＡＭ、９…カ
ウンタ、１０…フオーマツトメモリ。
FIG. 1 is a diagram showing an OCR photoelectric conversion circuit according to an embodiment of the present invention, FIG. 2 a is a diagram showing an output waveform from the photoelectric conversion element of FIG. 1, and FIG. 3 is a diagram showing an input waveform of a gate input signal, FIG. 3 is a diagram showing a conventional OCR photoelectric conversion circuit, and FIG. 4 is a diagram showing an output waveform from the photoelectric conversion element of FIG. 3. 1... Form, 2... Running surface, 3... Lens, 4... Photoelectric conversion element, 5... Amplifier, 6... A/D converter, 7,
11...Peak hold circuit, 8...RAM, 9...Counter, 10...Format memory.
Claims (1)
読取対象が記載された帳票を照光したときの反射
光と電気信号に変換する光電変換部と、 光電変換された電気信号を調節可能な基準電位
に基づいてデイジタル変換するＡ／Ｄ変換器とか
ら成る光電変換回路を備え、この出力に基づき帳
票上の読取対象を読取る光学式文字読取装置にお
いて、 光電変換回路に、 予め帳票種別コードに対応したフオーマツト情
報を格納した格納手段と、 読取つた帳票種別コードに基づき格納手段から
得られたフオーマツト情報により、光電変換され
た電気信号から前記基準電位を調節可能に設定保
持し、該基準電位をＡ／Ｄ変換器に供給するピー
クホールド回路とを設けたことを特徴とする光学
式文字読取装置。[Scope of claim for utility model registration] Includes a form type code indicating the type of form in advance,
A photoelectric conversion section that converts the reflected light from illuminating a document with a reading target into an electrical signal, and an A/D converter that converts the photoelectrically converted electrical signal into a digital signal based on an adjustable reference potential. In an optical character reading device that reads an object to be read on a form based on the output of the photoelectric conversion circuit, the photoelectric conversion circuit includes a storage means in which format information corresponding to a form type code is stored in advance, and a type of the read form. A peak hold circuit is provided that adjustably sets and holds the reference potential from the photoelectrically converted electrical signal based on the format information obtained from the storage means based on the code, and supplies the reference potential to the A/D converter. An optical character reading device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3128986U JPS62147063U (en) | 1986-03-06 | 1986-03-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3128986U JPS62147063U (en) | 1986-03-06 | 1986-03-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62147063U true JPS62147063U (en) | 1987-09-17 |
Family
ID=30836886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3128986U Pending JPS62147063U (en) | 1986-03-06 | 1986-03-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62147063U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5611573A (en) * | 1979-07-10 | 1981-02-04 | Fujitsu Ltd | Slip reading system |
| JPS57143682A (en) * | 1981-03-03 | 1982-09-04 | Oki Electric Ind Co Ltd | Optical character reader |
-
1986
- 1986-03-06 JP JP3128986U patent/JPS62147063U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5611573A (en) * | 1979-07-10 | 1981-02-04 | Fujitsu Ltd | Slip reading system |
| JPS57143682A (en) * | 1981-03-03 | 1982-09-04 | Oki Electric Ind Co Ltd | Optical character reader |
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