JPS5534719A - Picture information reader - Google Patents
Picture information readerInfo
- Publication number
- JPS5534719A JPS5534719A JP10701178A JP10701178A JPS5534719A JP S5534719 A JPS5534719 A JP S5534719A JP 10701178 A JP10701178 A JP 10701178A JP 10701178 A JP10701178 A JP 10701178A JP S5534719 A JPS5534719 A JP S5534719A
- Authority
- JP
- Japan
- Prior art keywords
- peak value
- capacitor
- threshold
- output
- level
- 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.)
- Granted
Links
Landscapes
- Facsimile Image Signal Circuits (AREA)
- Image Input (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10701178A JPS5534719A (en) | 1978-09-02 | 1978-09-02 | Picture information reader |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10701178A JPS5534719A (en) | 1978-09-02 | 1978-09-02 | Picture information reader |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5534719A true JPS5534719A (en) | 1980-03-11 |
JPS6221306B2 JPS6221306B2 (ja) | 1987-05-12 |
Family
ID=14448230
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10701178A Granted JPS5534719A (en) | 1978-09-02 | 1978-09-02 | Picture information reader |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5534719A (ja) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56135285A (en) * | 1980-03-25 | 1981-10-22 | Nec Corp | White level tracking circuit |
JPS58130675A (ja) * | 1982-01-28 | 1983-08-04 | Matsushita Electric Ind Co Ltd | アナログ信号2値化回路 |
JPS58163699A (ja) * | 1982-03-24 | 1983-09-28 | 堀 二郎 | 筆記具又はペイント塗布具の弁機構 |
JPS61148099A (ja) * | 1984-12-21 | 1986-07-05 | 三菱鉛筆株式会社 | 筆記具又は塗布具 |
JPS6341975U (ja) * | 1986-09-04 | 1988-03-19 | ||
JPS6394779A (ja) * | 1986-10-09 | 1988-04-25 | Canon Inc | 画像読取装置 |
JPH02252363A (ja) * | 1989-03-27 | 1990-10-11 | Mitsubishi Electric Corp | 画像信号2値化回路 |
JPH04241351A (ja) * | 1991-01-14 | 1992-08-28 | Shin Etsu Chem Co Ltd | 光学系ゴミよけ用ペリクル |
US5321526A (en) * | 1991-03-26 | 1994-06-14 | Sumitomo Electric Industries, Ltd. | White level detection circuit for an optical image reader |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5322312A (en) * | 1976-08-12 | 1978-03-01 | Sanyo Electric Co Ltd | Picture signal processing circui t |
-
1978
- 1978-09-02 JP JP10701178A patent/JPS5534719A/ja active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5322312A (en) * | 1976-08-12 | 1978-03-01 | Sanyo Electric Co Ltd | Picture signal processing circui t |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56135285A (en) * | 1980-03-25 | 1981-10-22 | Nec Corp | White level tracking circuit |
JPS58130675A (ja) * | 1982-01-28 | 1983-08-04 | Matsushita Electric Ind Co Ltd | アナログ信号2値化回路 |
JPS6340074B2 (ja) * | 1982-01-28 | 1988-08-09 | Matsushita Electric Ind Co Ltd | |
JPS58163699A (ja) * | 1982-03-24 | 1983-09-28 | 堀 二郎 | 筆記具又はペイント塗布具の弁機構 |
JPS61148099A (ja) * | 1984-12-21 | 1986-07-05 | 三菱鉛筆株式会社 | 筆記具又は塗布具 |
JPH0527560B2 (ja) * | 1984-12-21 | 1993-04-21 | Mitsubishi Pencil Co | |
JPS6341975U (ja) * | 1986-09-04 | 1988-03-19 | ||
JPH0543564Y2 (ja) * | 1986-09-04 | 1993-11-02 | ||
JPS6394779A (ja) * | 1986-10-09 | 1988-04-25 | Canon Inc | 画像読取装置 |
JPH02252363A (ja) * | 1989-03-27 | 1990-10-11 | Mitsubishi Electric Corp | 画像信号2値化回路 |
JPH04241351A (ja) * | 1991-01-14 | 1992-08-28 | Shin Etsu Chem Co Ltd | 光学系ゴミよけ用ペリクル |
US5321526A (en) * | 1991-03-26 | 1994-06-14 | Sumitomo Electric Industries, Ltd. | White level detection circuit for an optical image reader |
Also Published As
Publication number | Publication date |
---|---|
JPS6221306B2 (ja) | 1987-05-12 |
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