CN1074221C - Image scanner - Google Patents
Image scanner Download PDFInfo
- Publication number
- CN1074221C CN1074221C CN95116601A CN95116601A CN1074221C CN 1074221 C CN1074221 C CN 1074221C CN 95116601 A CN95116601 A CN 95116601A CN 95116601 A CN95116601 A CN 95116601A CN 1074221 C CN1074221 C CN 1074221C
- Authority
- CN
- China
- Prior art keywords
- light
- signal
- control signal
- fluorescent tube
- intensity
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Facsimile Scanning Arrangements (AREA)
Abstract
The present invention relates to an image scanner for scanning image data on a penetrability original copy. The image scanner comprises an image picking up device which is used for receiving a light signal passing through the original copy and generating a control signal because of the intensity of the light signal and a light source device which is connected with a power supply and used for radiating light source responding to the control signal for controlling the intensity.
Description
The relevant device of image scanning of the present invention refers to that especially imaged medium is the scanning means of light transmission material.
Device of image scanning widely applies to many fields today.Recently, the scanning means that has reflective (rsflective) pattern simultaneously and penetrate (transparent) pattern is developed.The basic principle of this class scanning means and detailed construction can be with reference to United States Patent (USP) 4,879,604.
Before carrying out image scan, must impose illumination to the medium (original) that image depended on earlier.And the used fluorescent tube that throws light on must be a hot cathode or cathode fluorescent tube (fluoresc-ent lamp), and this type of fluorescent tube has widely been applied in many equipment of office, in facsimile machine, copying machines or scanning means.
Just as other fluorescent tube, the fluorescent tube of being settled in the scanning means is after using a period of time, and its quality, performance and the intensity of light source (intensity) just begin variation.Therefore, the scanning quality of scanning means will be than the poor quality of original new fluorescent tube.
On the one hand, the light transmission material has different light transmissions in addition, and a default intensity of light source might be too bright or too dark for another kind of original paper material.So, will cause the effect that scans not as expection.Under this kind situation, the light source of fluorescent tube preferably can be adjusted.
In view of this, make the scanning effect keep certain level for the variation that compensates the above-mentioned intensity of light source, the purpose of this invention is to provide a kind of scanning means, it can be controlled automatically to the intensity of light source.
For realizing purpose of the present invention, a kind of device of image scanning that can adjust the intensity of light source according to user ' s preference provided by the invention.That is a kind of device of image scanning provided by the invention, the image data on the scanning penetrability original paper comprises:
One image pick-up, for the light signal that receives by original paper, and the intensity of response light signal, produce a control signal;
One light supply apparatus, itself and a power supply link, and respond this control signal, and for the light source of radiation one controlled intensity, with this original paper that throws light on, described light supply apparatus comprises: a control device responds this control signal, for producing a control code; One digital/analog converter responds this control code, for producing a voltage transitions control signal; One DC/AC electric pressure converter, itself and power supply link, and respond this voltage transitions control signal, for output one light tube electric voltage signal; One fluorescent tube responds this light tube electric voltage signal, for this light source of radiation.
Purpose of the present invention, characteristics and advantage will be described in detail as follows with reference to the accompanying drawings in conjunction with the embodiments:
Brief Description Of Drawings:
Fig. 1 is the block diagram of device of image scanning structure of the present invention.
With reference to figure 1, the present invention comprises an image pick-up 11 and light supply apparatus 13.Image pick-up 11 act on the light signal 120 that receives by original paper 12, and transmit digitized image signal 124 to the personal computer system 15 of its binding.As know technology, and be mat one interface circuit 116 therebetween, as a scsi interface, pick device 11 and personal computer system 15 are linked.In addition, in response to the intensity of receiving light signal 120, image pick-up 11 further produces at least one light source control signal 121.
According to an embodiment of image pick-up 11 of the present invention, image pick-up 11 comprises a pickup device 110, as the CCD module, and an analog/digital signal conversion device 112 and a microprocessor 114.CCD module 110 converts light signal 120 to voltage signal 122, and exports it to analog/digital signal conversion device 112.Analog/digital signal conversion device 112 exports signal of video signal to microprocessor 114 with digital signal 123 patterns.According to the characteristic of image on the original paper, as (positive) image just or negative (negative) image, microprocessor 114 produces image datas 124.Further, microprocessor 114 is made comparisons the value of digital signal 123 and a preset value or a user by the preference value of interface circuit 116 inputs, if result relatively is variant, microprocessor 114 starts a light source control signal 121 according to the predetermined way of a burning.Easy speech, when microprocessor 114 by digital signal 123 be worth know that the intensity of light source lowers or when raising, it starts light source control signal 121 notice light supply apparatuses 13, in order to the carrying out of adjustment work.
According to an embodiment of light supply apparatus 13 of the present invention, light supply apparatus 13 comprises controller 138, one analog/digital signal conversion devices, 134, one AC/DCs (DC/AC) electric pressure converters (inverter) 132, and a fluorescent tube 136.In response to control signal 121, controller 138 produces a control code (control code) signal 126.One analog/digital signal conversion device 134 converts control code signal 126 a voltage transitions control signal 127 of simulation to, and exports voltage transitions signal 127 to DC/AC electric pressure converter 132.DC/AC electric pressure converter 132 input direct voltages 129, and be controlled by the volt of voltage transitions control signal 127, output light tube electric voltage signal 128 is to fluorescent tube 136.So fluorescent tube 136 radiating light source signals 119, and its luminous intensity is to should control signal 121.
The present invention can adjust automatically or two kinds of mode operatings are adjusted in sequencing.When selecting self-regulation mode, when the intensity decreases of institute's receiving optical signals 120 (or rising on the contrary), and then decline of the volt of electric signal 122 (or corresponding rising), thereby the value of digitized signal 123 and then decline to scale (or corresponding rising), the value decline of control code signal 126 (or corresponding rising), the voltage decline of voltage transitions control signal 127 (or corresponding rising), light tube electric voltage 128 rises (or corresponding decline), causes the intensity of light signal 119 to rise at last (or corresponding decline).To compensate the luminous intensity decline (or rising) of previous generation.So, can obtain a controlled and stable light intensity degree value.Easy speech, under self-regulation mode, the feedback loop that is provided can make the CCD module receive the light source of a fixed light intensity.
When the sequencing adjustment modes was activated, the user of scanning means must be via performed programs (utility) in the computer 15, with the selective value of its light-source brightness microprocessor 114 via interface circuit 116 announcements.According to this selective value, so microprocessor 114 produces the control signal 121 of a correspondence, so this control signal 121 forces controller 138 to produce the control code 126 of a correspondence, this control code 126 changes the magnitude of voltage of voltage transitions control signal 127, so this one changes the light tube electric voltage 128 force DC/AC electric pressure converter 132 to produce a correspondence, with the intensity of adjusting light signal 119 to meet this user's preference.
Claims (4)
1. a device of image scanning supplies the image data on the scanning penetrability original paper, comprises:
One image pick-up, for the light signal that receives by original paper, and the intensity of response light signal, produce a control signal;
One light supply apparatus, itself and a power supply link, and respond this control signal, and for the light source of radiation one controlled intensity, with this original paper that throws light on, described light supply apparatus comprises:
One control device responds this control signal, for producing a control code;
One digital/analog converter responds this control code, for producing a voltage transitions control signal;
One DC/AC electric pressure converter, itself and power supply link, and respond this voltage transitions control signal, for output one light tube electric voltage signal;
One fluorescent tube responds this light tube electric voltage signal, for this light source of radiation.
2. device of image scanning according to claim 1, wherein, the luminous intensity of described control is maintained at a fixed value.
3. device of image scanning according to claim 1, wherein, described fluorescent tube is a cathode fluorescent tube.
4. device of image scanning according to claim 1, wherein, described fluorescent tube is a thermal cathode fluorescent tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95116601A CN1074221C (en) | 1995-08-21 | 1995-08-21 | Image scanner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95116601A CN1074221C (en) | 1995-08-21 | 1995-08-21 | Image scanner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1143879A CN1143879A (en) | 1997-02-26 |
| CN1074221C true CN1074221C (en) | 2001-10-31 |
Family
ID=5080976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95116601A Expired - Fee Related CN1074221C (en) | 1995-08-21 | 1995-08-21 | Image scanner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1074221C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1054485C (en) * | 1997-09-01 | 2000-07-12 | 明碁电脑股份有限公司 | Paper feeding scanner with previewing scan |
| CN106506897A (en) * | 2016-12-06 | 2017-03-15 | 深圳怡化电脑股份有限公司 | A kind of automatic compensating method of the light-source brightness of imageing sensor and device |
| KR20220151609A (en) | 2021-01-16 | 2022-11-15 | 하이커우 런슈 더마톨로지 클리닉 컴퍼니 리미티드 | Technical method of treating vitiligo with hair follicle melanocyte stem cell transplantation |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1064952A (en) * | 1991-03-19 | 1992-09-30 | 株式会社日立制作所 | Use liquid crystal board and utilize the display device of this liquid crystal board to obtain the method for projection image |
-
1995
- 1995-08-21 CN CN95116601A patent/CN1074221C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1064952A (en) * | 1991-03-19 | 1992-09-30 | 株式会社日立制作所 | Use liquid crystal board and utilize the display device of this liquid crystal board to obtain the method for projection image |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1143879A (en) | 1997-02-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5610720A (en) | Book document reading device having a page turning capability | |
| US5847845A (en) | Book document reading device | |
| EP0703560A3 (en) | Visual display system and exposure control apparatus | |
| CN1264086C (en) | Portable computer system and its control method | |
| US5514864A (en) | Photo electric feedback compensation controlled apparatus | |
| CN1074221C (en) | Image scanner | |
| US5636040A (en) | Automatic intensity control of the lamp within image scanning apparatus | |
| US7079791B2 (en) | Apparatus for reducing warm-up time by auxiliary light source and method for the same | |
| US5430289A (en) | Illuminating scanner lid for an optical scanner | |
| US20100259800A1 (en) | Image-reading apparatus, image-reading method and program | |
| EP0868071A3 (en) | Image scanning apparatus | |
| CN101388177A (en) | Image compensation methods and image display systems | |
| JPH11168600A (en) | Image reader | |
| JP2003315931A (en) | Image reader | |
| CN2297749Y (en) | Non-preheating image scanner | |
| JPH01165264A (en) | Image reader | |
| JPH1013623A (en) | Image input method | |
| JP2589897B2 (en) | Image reading device | |
| JPS6010872A (en) | Original reader | |
| JPH10126578A (en) | Transmission original unit and image reader using it | |
| JPS5913465A (en) | Original reader | |
| JPS62111562A (en) | Image reader | |
| JP3633196B2 (en) | Dimming control method for lighting | |
| JP3367979B2 (en) | Image reading device | |
| JPH1013683A (en) | Image input method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: BENQ ELECTRONS STOCK CO., LTD. Free format text: FORMER NAME OR ADDRESS: MINGHONG STOCK CO., LTD. Owner name: BENQ MOTOR CO., LTD. Free format text: FORMER NAME OR ADDRESS: BENQ ELECTRONS STOCK CO., LTD. |
|
| CP03 | Change of name, title or address |
Patentee after: BENQ Corp. Patentee before: BenQ Corporation Patentee after: BenQ Corporation Patentee before: MINGQI COMPUTER Co.,Ltd. |
|
| ASS | Succession or assignment of patent right |
Owner name: SHENZHEN FANGDA AUTOMATION SYSTEM CO., LTD. Free format text: FORMER OWNER: FANGDA GROUP CO., LTD. Effective date: 20101102 |
|
| C56 | Change in the name or address of the patentee | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 518000 FANGDACHENG, LONGJING, XILI, NANSHAN DISTRICT, SHENZHEN CITY, GUANGDONG PROVINCE TO: 518057 FANGDACHENG, LONGJING, XILI, NANSHAN DISTRICT, SHENZHEN CITY, GUANGDONG PROVINCE |
|
| CP01 | Change in the name or title of a patent holder |
Address after: China Taiwan Taoyuan County Patentee after: Qisda Corp. Address before: China Taiwan Taoyuan County Patentee before: BenQ Corporation |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20011031 Termination date: 20110821 |