JPS63229961A - Facsimile equipment - Google Patents
Facsimile equipmentInfo
- Publication number
- JPS63229961A JPS63229961A JP62064633A JP6463387A JPS63229961A JP S63229961 A JPS63229961 A JP S63229961A JP 62064633 A JP62064633 A JP 62064633A JP 6463387 A JP6463387 A JP 6463387A JP S63229961 A JPS63229961 A JP S63229961A
- Authority
- JP
- Japan
- Prior art keywords
- signals
- signal
- binarized
- image
- picture
- 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
- 238000006243 chemical reaction Methods 0.000 claims abstract description 9
- 238000007493 shaping process Methods 0.000 claims abstract description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/40—Picture signal circuits
- H04N1/409—Edge or detail enhancement; Noise or error suppression
- H04N1/4095—Correction of errors due to scanning a two-sided document, i.e. show-through correction
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、ファクシミリ袈＃に関し、特に原稿の両面に
書かれた画像情報を同時に読み取るファクシミリ装置に
関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a facsimile machine, and more particularly to a facsimile machine that simultaneously reads image information written on both sides of a document.
従来のファクシミリ装＊ａ、両面に書画情＠を有する原
稿全送信するとき、まず、装置にセットした原稿の一面
に光を照射し、この反射光を光電変換した画像信号を符
号化および変調して回線を介して、相手方装置に送１ご
する。次に、装置に再セットした先の原稿の他面を上記
と同様に送信して原稿の送ｇＩを終了する。When a conventional facsimile machine *a sends an entire document with calligraphic information on both sides, it first irradiates one side of the document set in the device with light, and converts the reflected light into photoelectric signals to encode and modulate the image signal. and send it to the other party's device via the line. Next, the other side of the original that has been reset in the apparatus is transmitted in the same manner as described above, and the original feeding gI is completed.
上述した従来のファクシミリ装置は、原稿片面分の読取
部しかないため５両面原稿を送信するときは、まず、原
稿の表面を送信してから、再度、原稿の裏面全送信する
という煩わしい２回の送信操作を必要とする。ま之、両
面に印刷された原稿を読取ると、原稿の裏面の画像情報
が混入するという問題がある。The conventional facsimile machine mentioned above only has a reading section for one side of the document, so when sending a 5-sided document, it must first send the front side of the document and then send the entire back side of the document twice. Requires a send operation. However, when reading a document printed on both sides, there is a problem in that image information from the back side of the document is mixed in.
本発明の目的は原稿の両面を同時に読取る際に読取面の
裏側からの不要な画像情報の影響を除去し、また％ １
回の送イぎ操作で原稿の両面全送信することができるフ
ァクシミリ装ｆｉｔｋ提供することにある。The purpose of the present invention is to eliminate the influence of unnecessary image information from the back side of the scanning surface when reading both sides of a document simultaneously, and to
The purpose of the present invention is to provide a facsimile machine that can send both sides of a document with just one feed operation.
本発明のファクシミリ装置は、原稿の両面全同時に読取
り第１および第２の画イぎ号音出力する第１および第２
の光電受換部□と、前記第１および第２の画信号をそれ
ぞれ波形整形して第１および第２の２値化画信号金出力
する第１および第２の波形整形回路と。The facsimile device of the present invention reads both sides of a document at the same time and outputs the first and second press sounds.
and first and second waveform shaping circuits that respectively shape the waveforms of the first and second image signals and output first and second binary image signals.
前記第１と第２の画信号とを比較した差分信号全出力す
る比較器ｔ１前記差分信号全それぞれ異・４＝１
なるしきい値で２値化した第１および第２の２１直化信
号を出力する第１および第２の２値化回路と。A comparator t1 that outputs all the difference signals obtained by comparing the first and second image signals.All the difference signals are different.The first and second 21-digitized signals are binarized with a threshold value of 4=1. first and second binarization circuits that output.
前記第１および第２の２埴化画信号と前記第１および第
２の２値化信号との論理和上京めてそれぞれ第１および
第２の画像信号全出力する第１お工び＠２のＯＲ回路と
、前記第２の画像信号全１ページごとに順次記憶する記
憶部と、前記第１の画像信号を送信したのち、前記記憶
部に記憶している第２の画像信号を読出して送信する切
換器とを有して構成さｎる。Logical sum of the first and second binary image signals and the first and second binary signals; First operation to output all the first and second image signals, respectively, upon arrival in Tokyo @2 an OR circuit; a storage section that sequentially stores the second image signal for each page; and after transmitting the first image signal, reads out the second image signal stored in the storage section. and a switching device for transmitting data.
次に、本発明の実施例について図面を参照して説明する
。Next, embodiments of the present invention will be described with reference to the drawings.
第１図は本発明の一実施例のブロック図、第２図は本実
施例の動作を説明するための信号波形図である。FIG. 1 is a block diagram of an embodiment of the present invention, and FIG. 2 is a signal waveform diagram for explaining the operation of this embodiment.
第１図および第２図を参照して説明する。This will be explained with reference to FIGS. 1 and 2.
原稿１は両面に画像情報を有する。第１の光源２は原稿
１０表面を照射し、第２の元原３は原稿１の裏面を照射
する。第１の光電変換部４および第２の光電変換部５は
原稿１の表面および裏面からの反射光全光電変換し、ア
ナログの第１および第２の画信号２１ａ、２１ｔ）をそ
れぞれ出力する。The original 1 has image information on both sides. The first light source 2 illuminates the front surface of the document 10, and the second source 3 illuminates the back surface of the document 1. The first photoelectric conversion section 4 and the second photoelectric conversion section 5 perform full photoelectric conversion on the reflected light from the front and back surfaces of the original 1, and output analog first and second image signals 21a and 21t, respectively.
第１および第２の波形整形回路６，７はそれぞれに・雑
音を除去するためのしきい値電圧Ｖａｌ 、 Ｖｂ Ｈ
金’Ｉｆｆ、入力の第１および第２の画信号２１ａ。The first and second waveform shaping circuits 6 and 7 each have threshold voltages Val and VbH for removing noise.
gold'Iff, input first and second image signals 21a;
２１ｂの波形を整形して２埴化した第１および第２の２
イ直化画信号２２ ａ ｐ ２２ ｂをそｎぞれ出力す
る。比較器８は第１と第２の画信号２１ａ。1st and 2nd 2 which are formed by shaping the waveform of 21b
A converted image signals 22 a p 22 b are respectively output. The comparator 8 receives the first and second image signals 21a.
２１ｂを比較した差分イボ号２３を出力する。21b is compared and outputs the difference number 23.
第１および第２の２１ぼ化回路９．１０は、そルぞれ正
負の異なるしきい値Ｖａｔ ｌ Ｖａｓ ｋ有し。The first and second 21-voltage circuits 9.10 each have different positive and negative threshold values VatlVask.
それぞ扛入力さ扛た差分信号２３をしきい値金用いて２
１１１化し、第１および第２の２１直化信号２４ａ。2 using the threshold value of the difference signal 23 inputted and inputted respectively.
111, and the first and second 21 converted signals 24a.
２４ｂｔ出力する。第１および第２のＯＲ回路１１゜１
２は第１および第２の２値化画信号２２ａ、２２ｂと第
１および第２の２値化信号２４ａ、２４ｂとの倫理和上
京め、それぞｎ表面の第１の画像信号２５ａと裏面の第
２の画像１１号２５ｂとを出力する。Outputs 24bit. First and second OR circuit 11゜1
2 is the sum of the first and second binarized image signals 22a, 22b and the first and second binarized signals 24a, 24b, the first image signal 25a on the front side and the back side, respectively. The second image No. 11 25b is output.
記憶部１３は第２の画像信号２５ｂを１ページごとに順
次記憶する。切換器１４は、まず１表面の第１の画像信
号２５ａ全符号器１５で符号化し、変調器１６で変調し
て、網制御部１７ｔ″介して回線１８に送出する。次に
、記憶部１３から裏面の第２の画像信号２５ｂを読出し
て、上記と同様に回線１８に送出して原稿１の両面の送
信を終了する。The storage unit 13 sequentially stores the second image signal 25b page by page. The switching device 14 first encodes the first image signal 25a on one surface with the full encoder 15, modulates it with the modulator 16, and sends it out to the line 18 via the network control section 17t''.Next, the storage section 13 The second image signal 25b of the back side is read out from the second image signal 25b and sent to the line 18 in the same manner as described above, thereby completing the transmission of both sides of the original document 1.
このようにすると、読み取った画像信号中の裏側からの
不要な信号が、低レベルのときに波形整形回路で除去し
、高レベルのときは０Ｒ１Ｐ回路において２値化信号を
用いて除去することができる。In this way, unnecessary signals from the back side of the read image signal can be removed by the waveform shaping circuit when the level is low, and by using the binarized signal in the 0R1P circuit when the level is high. can.
以上説明したように本発明は、原稿の表裏両面を同１時
に読取った各々の光電変換出力を比較した各差分信号に
エフ、各々が読取った画像情報中の裏側に遍かれた不要
情報の信号を除去するようにしたので画像品質を向上さ
せる効果を有し、また、表面の画像１＃報を送信しなが
ら裏面の画像情報を記憶部に記憶しておくことで、原種
の表ｙｖｒ、連続して送信できる効果も有する。As explained above, the present invention provides a signal for each differential signal obtained by comparing the respective photoelectric conversion outputs obtained by reading both the front and back sides of a document at the same time, and a signal of unnecessary information distributed on the back side of the image information read by each. This has the effect of improving the image quality, and by storing the image information on the back side in the storage unit while transmitting the image 1# information on the front side, it is possible to It also has the effect of allowing you to send it.
第１図は本発明の一実施例のブロック図、第２図は本実
施例の動作を説明するための信号波形図である。
１・・・・・・原稿、２，３・・・・・・第１．第２の
光源、４゜５・・・・・・第１．第２の光電変換部、６
，７・・・・・・第１゜第２の波形整形回路、８・・・
・・・比較器、９，１０・・・・・・第１．第２の２値
化回路、１１，１２・・・・・・第１゜第２のＯＲ回路
、１３・・・・・・記憶部％１４・・・・・・切換器、
１５・・・・・・符号器％１６・・・・・・変調器％
１７・・・・・・網制御部、１８・・−・・・回＃、２
１ａ、２１ｂ・・・・・・第１、第２の画信号、 ２２
ａ 、 ２２ｂ＝−・第１，５ｇ２の２値化画信号、
２３・・・・・・差分信号、２４ａｔ２４ｂ・・・・・
・第１．第２の２１直イし信号％ ２５ａ・・°・°゛
表面第１の画像信号、２５ｂ・・・・・・裏面の第２の
代理人 弁理士 内 原 昔 １′１゛。
＼、−ノFIG. 1 is a block diagram of an embodiment of the present invention, and FIG. 2 is a signal waveform diagram for explaining the operation of this embodiment. 1...Manuscript, 2,3...1st. Second light source, 4°5... 1st. second photoelectric conversion section, 6
, 7... 1st and 2nd waveform shaping circuits, 8...
... Comparator, 9, 10 ... 1st. 2nd binarization circuit, 11, 12...1st degree second OR circuit, 13...memory section %14...switcher,
15... Encoder % 16... Modulator %
17...Network control unit, 18...Time #, 2
1a, 21b...first and second image signals, 22
a, 22b=-・1st, 5g2 binary image signal,
23...Difference signal, 24at24b...
・First. Second 21 direct input signal % 25a...°・°゛First image signal on the front side, 25b...Second agent on the back side Patent attorney Uchihara Maki 1'1゛. \, -ノ
Claims (1)
力する第１および第２の光電変換部と、前記第１および
第２の画信号をそれぞれ波形整形して第１および第２の
２値化画信号を出力する第１および第２の波形整形回路
と、 前記第１と第２の画信号とを比較した差分信号を出力す
る比較器と、前記差分信号をそれぞれ異なるしきい値で
２値化した第１および第２の２値化信号を出力する第１
および第２の２値化回路と、前記第１および第２の２値
化画信号と前記第１および第２の２値化信号との論理和
を求めてそれぞれ第１および第２の画像信号を出力する
第１および第２のＯＲ回路と、 前記第２の画像信号を１ページごとに順次記憶する記憶
部と、前記第１の画像信号を送信したのち、前記記憶部
に記憶している第２の画像信号を読出して送信する切換
器とを有することを特徴とするファクシミリ装置。[Scope of Claims] First and second photoelectric conversion units that simultaneously read both sides of a document and output first and second image signals; first and second waveform shaping circuits that output first and second binary image signals; a comparator that outputs a difference signal obtained by comparing the first and second image signals; a first outputting a first and a second binarized signal which are binarized using different threshold values;
and a second binarization circuit, which calculates the logical sum of the first and second binarized image signals and the first and second binarized signals to obtain first and second image signals, respectively. a first and second OR circuit that outputs the second image signal; a storage section that sequentially stores the second image signal page by page; and a storage section that transmits the first image signal and then stores it in the storage section. A facsimile device comprising: a switch that reads and transmits a second image signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62064633A JP2504037B2 (en) | 1987-03-18 | 1987-03-18 | Facsimile machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62064633A JP2504037B2 (en) | 1987-03-18 | 1987-03-18 | Facsimile machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63229961A true JPS63229961A (en) | 1988-09-26 |
| JP2504037B2 JP2504037B2 (en) | 1996-06-05 |
Family
ID=13263867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62064633A Expired - Lifetime JP2504037B2 (en) | 1987-03-18 | 1987-03-18 | Facsimile machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2504037B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04154369A (en) * | 1990-10-18 | 1992-05-27 | Hitachi Ltd | Image information input system and image scanner |
| GB2250887A (en) * | 1990-10-05 | 1992-06-17 | Canon Kk | Image reading apparatus |
| GB2265785A (en) * | 1990-10-05 | 1993-10-06 | Canon Kk | Image reading apparatus |
| EP0784396A3 (en) * | 1996-01-11 | 1997-07-23 | Xerox Corporation | Show-through correction for two-sided documents |
| EP1006713A2 (en) * | 1998-11-30 | 2000-06-07 | Xerox Corporation | Show-through compensation apparatus and method |
-
1987
- 1987-03-18 JP JP62064633A patent/JP2504037B2/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2250887A (en) * | 1990-10-05 | 1992-06-17 | Canon Kk | Image reading apparatus |
| GB2265785A (en) * | 1990-10-05 | 1993-10-06 | Canon Kk | Image reading apparatus |
| GB2265785B (en) * | 1990-10-05 | 1995-02-01 | Canon Kk | Image reading apparatus |
| GB2250887B (en) * | 1990-10-05 | 1995-02-01 | Canon Kk | Image reading apparatus |
| US5392135A (en) * | 1990-10-05 | 1995-02-21 | Canon Kabushiki Kaisha | Image reading apparatus having different reading speeds |
| US5488485A (en) * | 1990-10-05 | 1996-01-30 | Canon Kabushiki Kaisha | Image reading apparatus |
| JPH04154369A (en) * | 1990-10-18 | 1992-05-27 | Hitachi Ltd | Image information input system and image scanner |
| EP0784396A3 (en) * | 1996-01-11 | 1997-07-23 | Xerox Corporation | Show-through correction for two-sided documents |
| EP1006713A2 (en) * | 1998-11-30 | 2000-06-07 | Xerox Corporation | Show-through compensation apparatus and method |
| EP1006713A3 (en) * | 1998-11-30 | 2001-09-12 | Xerox Corporation | Show-through compensation apparatus and method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2504037B2 (en) | 1996-06-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0354506B2 (en) | ||
| JPS63229961A (en) | Facsimile equipment | |
| JPS56102160A (en) | Facsimile receiving device | |
| JPS5873280A (en) | Signal binary coding processor | |
| JPS63228882A (en) | Image signal processing system | |
| JP2861089B2 (en) | Image addition device | |
| JPS5875376A (en) | Picture reader | |
| JPS58181367A (en) | Picture processing device | |
| JPS6211101Y2 (en) | ||
| JPS58119269A (en) | Facsimile transmitter | |
| JPS58215165A (en) | Linear density converting system | |
| JPH01160180A (en) | Reader | |
| JPH05304575A (en) | Digital copying machine | |
| JPS60232778A (en) | Picture signal processing system | |
| JPS5875375A (en) | Picture reader | |
| CA1315387C (en) | Picture image data processor | |
| KR940011392B1 (en) | Picture input device for g-tv fax | |
| JPS6145679A (en) | Picture signal processing device | |
| JPS63233669A (en) | Line density converting circuit | |
| JPH0354505B2 (en) | ||
| JPH0144067B2 (en) | ||
| JPS5614774A (en) | Transmission and recording system for facsimile picture signal | |
| JPS583471A (en) | Picture processing method | |
| JPS62139474A (en) | Color facsimile equipment | |
| JPH01162074A (en) | Automatic gain control method in facsimile |