KR920000903Y1 - Signal compensating device for fax - Google Patents
Signal compensating device for fax Download PDFInfo
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- KR920000903Y1 KR920000903Y1 KR2019860008301U KR860008301U KR920000903Y1 KR 920000903 Y1 KR920000903 Y1 KR 920000903Y1 KR 2019860008301 U KR2019860008301 U KR 2019860008301U KR 860008301 U KR860008301 U KR 860008301U KR 920000903 Y1 KR920000903 Y1 KR 920000903Y1
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- comparator
- input
- analog switch
- output
- amplifier
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- 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
- H04N1/405—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
- H04N2201/0077—Types of the still picture apparatus
- H04N2201/0093—Facsimile machine
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Facsimile Image Signal Circuits (AREA)
Abstract
내용 없음.No content.
Description
제1도는 본 고안 장치의 회로도.1 is a circuit diagram of the device of the present invention.
제2도 a-d도는 본 고안의 장치를 설명하기 위한 파형도.2 is a waveform diagram for explaining the device of the present invention.
제3도 가는 종래 장치의 회로도 b-d는 종래 장치를 설명하기 위한 파형도.Fig. 3 is a circuit diagram b-d of a conventional device.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for the main parts of the drawings
3 : 렌즈 4 : 전하결합장치3: lens 4: charge coupling device
7 : 증폭기 8 : 미분기7: amplifier 8: differentiator
9 : 적분기 10,12 : 비교기9: integrator 10,12: comparator
11 : 아날로그 스위치11: analog switch
본 고안은 모사전송기에 있어 송신원고의 농염변화를 나타내는 2치화 신호 보정 장치에 관한 것으로서, 특히 송신원고의 잉크 글씨나 연필 글씨가 모두 적당한 송고될수 있도록 한 2치화 신호 보정장치에 관한 것이다.The present invention relates to a binarized signal correcting device that exhibits a change in pesticide in a transmission transmitter, and more particularly, to a binarized signal correcting device in which both ink letters and pencil letters of a transmission document can be properly sent.
종래에는 제3a-d에서와 같이, 광원(31)에서 조사된 빛이 원고(32)에서 반사되고 렌즈(33)을 통하여 CCD(전하결합장치 34)에 입력된다. CCD(34)의 출력은 증폭기(35)에서 증폭되어 제3b도와 같은 화신호로 나타나고 이 화신호는 비교기(38)와 피크홀더부(36)에 입력되고, 피크홀더부(36)에서는 제3c도와 같은 피크로락선 파형이 발생되며, 피크포락선 파형은 레벨전이기(37)를 통하여 비교기(38)에 입력되어서 비교기(38)에 입력된 두 신호를 비교하여 제3d도와 같은 2치화신호를 유출하게 되나 원고의 농도가 변화되는 경우나, 제3b도에서의 중간 레벨화신호(A 부분)는 원고농도에서 발생된 것이므로 비교기(38)의 출력에서 나타나야 하는데 제3도 라에서는 표시되지 않는 단점이 있다.Conventionally, as in 3a-d, the light irradiated from the light source 31 is reflected from the document 32 and input to the CCD (charge coupler 34) through the lens 33. The output of the CCD 34 is amplified by the amplifier 35 and represented as a sum signal as shown in FIG. 3b. The sum signal is input to the comparator 38 and the peak holder portion 36, and the peak holder portion 36 has a third signal. A peak envelope waveform, such as a degree, is generated, and the peak envelope waveform is input to the comparator 38 through the level converter 37 to compare the two signals input to the comparator 38, and outflow the binarized signal as shown in FIG. However, when the density of the original is changed or the intermediate leveling signal (part A) in FIG. 3b is generated at the original concentration, it should appear at the output of the comparator 38. have.
즉, 중간 레벨 농도의 원고는 전송되지 않는 단점이 있는 것이다.In other words, an original of medium level density has the disadvantage that it is not transmitted.
따라서 본 고안은 이러한 종래의 단점을 해결하도록 모사전송기의 CCD장치의 증폭단 뒤에 보정부를 설치하여 송신될 원고의 농단변화 레벨을 보정하므로서 원고의 잉크글씨, 연필글씨 등을 안정하게 송신할수 있는 2치화 신호 보정 장치를 제공하는 것을 목적으로 하여 이하 첨부된 도면을 참조하면서 본 고안의 구성, 작용효과를 설명하면 다음과 같다.Therefore, the present invention provides a binarization signal capable of stably transmitting ink letters, pencil letters, and the like by correcting the level of change of the document to be transmitted by installing a correction unit behind the amplifying stage of the CCD apparatus of the replica transmitter to solve this conventional disadvantage. For the purpose of providing a correction device will be described below with reference to the accompanying drawings, the configuration, operation and effect of the present invention.
렌즈(3), 전하결합장치(4), 증폭기(7) 및 비교기(10)를 포함하는 모사전송기용 2치화 신호 장치에 있어, 중폭기(7)의 출력을 콘덴서(C1)와 저항(R3)으로 구성된 미분기(8)를 통하여 비교기(10)의 입력(+)에 연결함과 동시에 저항(R4)과 콘덴서(C2)로 구성된 적분기(9)를 통하여 아날로그스위치(11)에 연결하고, 아날로그 스위치(11)의 출력은 비교기(12)의 입력단(+)과 비교기(10)의 입력(-)에 연결하며, 기준전압이 입력(-)에 인가된 비교기(12)의 출력은 아날로그 스위치(11)의 제어 입력에 연결하여 된 구성으로서 이러한 본 고안 장치의 작용효과는 광원(1)에서 주사된 빛이 원고(2)에서 반사되어 렌즈(3)를 통과한 다음 CCD(4)를 거쳐 직렬 데이타로 나타난다. 이어 증폭기(7)에서 소정 레벨로 증폭된 후 미분기(8)에 입력되어 높은 대역만이 통과되어 직류성분이 차단된 다음 비교기(10)의 입력(+)에 입력된다.In a binary signal device for a simulated transmitter including a lens (3), a charge coupling device (4), an amplifier (7), and a comparator (10), the output of the heavy amplifier (7) is connected to a capacitor (C 1 ) and a resistor ( It is connected to the input (+) of the comparator 10 through a differentiator 8 composed of R 3 ) and to the analog switch 11 through an integrator 9 composed of a resistor R 4 and a capacitor C 2 . The output of the analog switch 11 is connected to the input terminal (+) of the comparator 12 and the input (-) of the comparator 10, and the output of the comparator 12 having a reference voltage applied to the input (-). Is connected to the control input of the analog switch 11, the effect of the device of the present invention is that the light emitted from the light source 1 is reflected from the original (2) through the lens (3) and then the CCD (4) As serial data. Subsequently, the amplifier 7 is amplified to a predetermined level and input to the differentiator 8 so that only a high band is passed to block the DC component, and then input to the input of the comparator 10.
또한 증폭기(7)의 출력은 적분기(9)에 입력되어 피크치가 제2c도와같이 보유된다. 또한 미분기(8)의 출력은 제2b도와 같은 파형이 된다. 제2c도와 같은 파형은 저항(R5, R7)에 의해 분배되어 적정레벨로 변이된후 비교기(10)의 기준전압으로서 인가됨과 동시에 비교기(12)의 입력(+)에 입력된다.In addition, the output of the amplifier 7 is input to the integrator 9 so that the peak value is retained as shown in FIG. 2C. Moreover, the output of the differentiator 8 becomes a waveform like 2b degree. The waveform as shown in FIG. 2C is distributed by the resistors R 5 and R 7 , changed to an appropriate level, applied as a reference voltage of the comparator 10, and simultaneously input to the input (+) of the comparator 12.
비교기(12)에서는 기준전압을 이용하여 입력(+)에 인가된 제2c도와 같은 파형에 따라 소정 하이 로우 출력을 발생시켜 아날로그 스위치(11)의 제어 단자에 인가하여 아날로그스위치(11)의 온.오프를 제어한다. 즉 콘덴서(C2)의 충전 전압이 높은 경우에는 아날로그스위치(11)를 온 시켜 방전이 빨리되도록하고 충전전압이 소정레벨 이하이면 아날로그 스위치(11)를 오프시켜 방전이 늦게 이루어지도록 한다. 이 작동에 따라 적절한 기준 레벨이 발생되므로 비교기(10)에서는 제2b도의 파형과 비교하여 제2d도와 같은 보정된 2치화 신호데이타가 발생되는 것이다.The comparator 12 generates a predetermined high-low output according to the waveform shown in FIG. 2C applied to the input (+) by using the reference voltage and applies it to the control terminal of the analog switch 11 to turn on the analog switch 11. Control off. That is, when the charging voltage of the capacitor C 2 is high, the analog switch 11 is turned on so that the discharge is early, and when the charging voltage is lower than the predetermined level, the analog switch 11 is turned off so that the discharge is late. Since an appropriate reference level is generated according to this operation, the comparator 10 generates corrected binary signal data as shown in FIG. 2d compared with the waveform in FIG. 2b.
이상에서 설명된 바와같이 본 고안에 의하면 모사전송기의 원고내에서 펜글시, 연필글씨, 잉크등으로 쓴 경우와 원고 농도변화에도 안정된 화신호가 발생되는 것이다.As described above, according to the present invention, a stable signal is generated even when writing with pen writing, pencil writing, ink, etc. in the original of the copying transmitter and changing the original density.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019860008301U KR920000903Y1 (en) | 1986-06-13 | 1986-06-13 | Signal compensating device for fax |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019860008301U KR920000903Y1 (en) | 1986-06-13 | 1986-06-13 | Signal compensating device for fax |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR880001475U KR880001475U (en) | 1988-03-15 |
| KR920000903Y1 true KR920000903Y1 (en) | 1992-01-31 |
Family
ID=19252627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019860008301U KR920000903Y1 (en) | 1986-06-13 | 1986-06-13 | Signal compensating device for fax |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR920000903Y1 (en) |
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1986
- 1986-06-13 KR KR2019860008301U patent/KR920000903Y1/en not_active IP Right Cessation
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| Publication number | Publication date |
|---|---|
| KR880001475U (en) | 1988-03-15 |
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