CN1520148A - Action method of double sided scaning device - Google Patents
Action method of double sided scaning device Download PDFInfo
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- CN1520148A CN1520148A CNA031020046A CN03102004A CN1520148A CN 1520148 A CN1520148 A CN 1520148A CN A031020046 A CNA031020046 A CN A031020046A CN 03102004 A CN03102004 A CN 03102004A CN 1520148 A CN1520148 A CN 1520148A
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- 238000000034 method Methods 0.000 title abstract description 7
- 230000003287 optical effect Effects 0.000 claims abstract description 14
- 239000003086 colorant Substances 0.000 claims abstract description 12
- 230000011664 signaling Effects 0.000 claims description 12
- 238000005282 brightening Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 241001138768 Amphibolia Species 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
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- 239000004065 semiconductor Substances 0.000 description 1
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Abstract
In the method: first, brightening light sources in identical colors or different colors in first group of light source and second group of light source to scan face and back face of document; next, receiving optical signals by scanning face and back face of document, and converting optical signal to analog electric signal; then converting the analog electric signal to digital electric signal; finally, output digital electric signal. The invention uses light emitting diode (LED) as scanning light source. Since LED is not need of warming-up procedure and LED has fast on/off property, thus, the function for scanning both sides can be reached easily.
Description
Technical field
The invention relates to a kind of How It Works of scanning means, and particularly relevant for a kind of How It Works of double-faced scanning device.
Background technology
Scanner is a kind of a kind of machine between photocopier and camera.In the past because expensive price almost is some patents as particular job persons such as artistic workings.In recent years,, squeezed into the main flow of pc world finally, become the senior general of personal computer enclosure equipment because the price that strong competition the caused downslide in scanner market is added in advancing by leaps and bounds of computer technology.
Scanner can be distinguished into some kinds of forms according to its price or function, and general scanner approximately can be distinguished into handly scanner, paper feeding scanner, business card scanner, negative film scanner and falt bed scanner etc. basically.Wherein, the similar glass platform of falt bed scanner is that file or pattern are placed on the flat glass, is moved by transducer and data is read in.Because its structure is can be too complicated, and also difficulty not too of using method, add the function extendibility that it has height, therefore become the arrange in pairs or groups main flow of scanner of computer user now.
For the fluorescent tube in the scanner, the general employed fluorescent tube of scanner all uses fluorescent tube as light source, therefore when running, do not need warming-up too of a specified duration (warm-up) time, but its shortcoming is a scanner activate after, light has one period amphibolia, and the phenomenon of flicker takes place in light sometimes in scanning process.And the method for improving this scintillation is to adopt cold cathode ray tube, but its shortcoming is that comparatively costliness and warm-up period are longer for price.And for double-faced scanning device, known a kind of method is to use two groups of cold cathode ray tubes as light emitting source, but because warm-up period is longer, and when the same position of file or image is done the scanning of positive and negative, can be because the light source that cold cathode ray tube is launched can interfere with each other, therefore the segment distance so must stagger during scanning is difficult to the file or the image of scanning double-side simultaneously.Therefore, if be used as the light emitting source of double-faced scanning device with cold cathode ray tube, then control circuit must design quite complicated, just can reach the function of scanning double-side simultaneously.
Summary of the invention
In view of this, the present invention proposes a kind of How It Works of double-faced scanning device.The present invention utilizes two groups of light sources (for example being light-emitting diode) to be used as the light emitting source of double-faced scanning device, because light-emitting diode do not need warming-up, and the characteristic of Push And Release fast, therefore can reach the function of while scanning double-side easily.
For reaching above-mentioned and other purpose, the present invention proposes a kind of How It Works of double-faced scanning device.In this How It Works, the sweep limits that at first can control the range of exposures of the not overlapping and second group of light source of the sweep limits of the range of exposures of first group of light source and second group of inductor and first group of inductor is not overlapping.Then, can make shinny front and the reverse side that comes scanning document of the light source of the same color in first group of light source and the second group of light source.Then, the optical signalling of gained in the time of can receiving the front of scanning document and reverse side, and convert optical signalling to analog electronic signal.Next, can convert analog electronic signal to digital electronic signal.Afterwards, can export digital electronic signal.
In a preferred embodiment of the present invention, first group of light source comprises redness, green and blue light source, and second group of light source comprises redness, green and blue light source.
In a preferred embodiment of the present invention, first group of light source is first group of light-emitting diode, and second group of light source is second group of light-emitting diode.
The present invention also proposes a kind of How It Works of double-faced scanning device.In this How It Works, at first can make shinny front and the reverse side that comes scanning document of light sources of different colors in first group of light source and the second group of light source.Then, the optical signalling of gained in the time of can receiving the front of scanning document and reverse side, and convert optical signalling to analog electronic signal.Next, can convert analog electronic signal to digital electronic signal.Afterwards, can export digital electronic signal.
In a preferred embodiment of the present invention, first group of light source and second group of light source are positioned at same position.
In a preferred embodiment of the present invention, the sweep limits of the range of exposures of first group of light source and second group of inductor is overlapping.
In a preferred embodiment of the present invention, the sweep limits of the range of exposures of second group of light source and first group of inductor is overlapping.
In a preferred embodiment of the present invention, the range of exposures of the overlapping and second group of light source of the sweep limits of the range of exposures of first group of light source and second group of inductor and the sweep limits of first group of inductor are overlapping.
In a preferred embodiment of the present invention, first group of light source and second group of light source are positioned at diverse location.
In a preferred embodiment of the present invention, the sweep limits of the range of exposures of first group of light source and second group of inductor is not overlapping.
In a preferred embodiment of the present invention, the sweep limits of the range of exposures of second group of light source and first group of inductor is not overlapping.
In a preferred embodiment of the present invention, the range of exposures of the not overlapping and second group of light source of the sweep limits of the range of exposures of first group of light source and second group of inductor and the sweep limits of first group of inductor are not overlapping.
In sum, the present invention utilizes two groups of light sources (for example being light-emitting diode) to be used as the light emitting source of double-faced scanning device, because light-emitting diode do not need warming-up, and the characteristic of Push And Release fast, therefore can reach the function of while scanning double-side easily.
Description of drawings
Fig. 1 is the structural representation according to the double-faced scanning device of a preferred embodiment of the present invention;
Fig. 2 is for when first group of light-emitting diode and second group of light-emitting diode schematic diagram during at the diverse location scanning document;
Fig. 3 is the shinny sequential chart of light emitting module control circuit control light emitting module according to a preferred embodiment of the present invention;
Fig. 4 is the shinny sequential chart of light emitting module control circuit control light emitting module of another preferred embodiment according to the present invention;
Fig. 5 is for when first group of light-emitting diode and second group of light-emitting diode schematic diagram during at the same position scanning document; And
Fig. 6 is the shinny sequential chart of light emitting module control circuit control light emitting module of the another preferred embodiment according to the present invention.
10: double-faced scanning device
102: file
104: light emitting module
106: the light emitting module control circuit
108: the first groups of inductors
110: the second groups of inductors
112: image processor
114: interface circuit
116: the first groups of light-emitting diodes
118: the second groups of light-emitting diodes
120: computer
Embodiment
Please refer to Fig. 1, it is the structural representation according to the double-faced scanning device 10 of a preferred embodiment of the present invention.Double-faced scanning device 10 is in order to scanning document 102.As shown in Figure 1, double-faced scanning device 10 comprises light emitting module 104, light emitting module control circuit 106, first group of inductor 108 and second group of inductor 110, image processor 112 and interface circuit 114.Wherein, light emitting module 104 comprises first group of light source and second group of light source.And in the preferred embodiment of next explanation, represent first group of light source with first group of light-emitting diode 116, and represent second group of light source with second group of light-emitting diode 118, but for haveing the knack of this skill person, it should be noted, representing light source with light-emitting diode is not that the light source of other form also is suitable in order to qualification the present invention.
Next the function of the each several part of double-faced scanning device 10 will be described.First group of light-emitting diode 116 light source when being used as scanning document 102 positive, and second group of light-emitting diode 118 light source when being used as the reverse side of scanning document 102.Wherein, first group of light-emitting diode 116 comprises the light-emitting diode of redness, green and blue three kinds of colors at least; And second group of light-emitting diode 118 comprises the light-emitting diode of redness, green and blue three kinds of colors at least.Light emitting module control circuit 106 is coupled to light emitting module 104, in order to control light emitting module 104 bright with do not work.The optical signalling that first group of inductor 108 reflected when receiving scanning document 102 positive, and convert optical signalling to analog electronic signal.The optical signalling that second group of inductor 110 reflected when receiving the reverse side of scanning document 102, and convert optical signalling to analog electronic signal.In this preferred embodiment, first group of inductor 108 and second group of inductor 110 can be charge coupled cell (CCD) or metal-oxide-semiconductor (MOS) (CMOS) sensing element.Image processor 112 is in order to receiving analog electronic signal, and converts analog electronic signal to digital electronic signal.And interface circuit 114 is coupled to image processor 112, is sent to computer 120 in order to the output digital electronic signal.
Be noted that at this, for convenience's sake, in ensuing embodiment, first group of light-emitting diode 116 only comprises first red light emitting diodes, first green LED and first blue LED, and second group of light-emitting diode 118 only comprises second red light emitting diodes, second green LED and second blue LED, but those who familiarize themselves with the technology should be appreciated that, the light-emitting diode of other color also is contained among first group of light-emitting diode 116 and the second group of light-emitting diode 118.
Next will illustrate when first group of light-emitting diode 116 and second group of light-emitting diode 118 during, and how control the shinny sequential of light emitting module 104, and reach the function of scanning double-side simultaneously by light emitting module control circuit 106 at diverse location scanning document 102.Please refer to Fig. 2, it is for when first group of light-emitting diode 116 and second group of light-emitting diode 118 schematic diagram during at diverse location scanning document 102.In Fig. 2, the shinny light-emitting diode in first group of light-emitting diode 116 and the second group of light-emitting diode 118 can be same color or different colours.That is, light emitting module control circuit 106 can make the light-emitting diode of the same color in first group of light-emitting diode 116 and the second group of light-emitting diode 118 shinny, or makes the light-emitting diode of the different colours in first group of light-emitting diode 116 and the second group of light-emitting diode 118 shinny.Next will above-mentioned situation be described with two preferred embodiments.
Please refer to Fig. 3, it is according to the shinny sequential chart of the light emitting module control circuit 106 control light emitting module 104 of a preferred embodiment of the present invention.This embodiment makes the light-emitting diode of the same color in first group of light-emitting diode 116 and the second group of light-emitting diode 118 example in shinny for light emitting module control circuit 106.In this embodiment, to maintain the accurate bit representation light-emitting diode of low-voltage shinny when light-emitting diode, and to maintain the accurate bit representation light-emitting diode of high voltage not shinny when light-emitting diode.In Fig. 3, the range of exposures that double-faced scanning device 10 can first group of light-emitting diode 116 of control and the sweep limits of second group of inductor 110 is not overlapping and the sweep limits of the range of exposures of second group of light-emitting diode 118 and first group of inductor 108 is not overlapping.Then, light emitting module control circuit 106 can be controlled the shinny sequential of light emitting module 104 and make first red light emitting diodes, second red light emitting diodes, first green LED, second green LED, first blue LED and second blue LED shinny.
Next the shinny sequential chart of light emitting module control circuit 106 control light emitting module 104 of another preferred embodiment according to the present invention will be described, please refer to shown in Figure 4.This embodiment makes the light-emitting diode of the different colours in first group of light-emitting diode 116 and the second group of light-emitting diode 118 example in shinny for light emitting module control circuit 106.In this embodiment, to maintain the accurate bit representation light-emitting diode of low-voltage shinny when light-emitting diode, and to maintain the accurate bit representation light-emitting diode of high voltage not shinny when light-emitting diode.In Fig. 4, double-faced scanning device 10 can first group of light-emitting diode 116 of control and second group of light-emitting diode 118 is positioned at that the sweep limits of the range of exposures of diverse location, first group of light-emitting diode 116 and second group of inductor 110 is not overlapping, the sweep limits of the range of exposures of second group of light-emitting diode 118 and first group of inductor 108 is not overlapping or the sweep limits of the range of exposures of first group of light-emitting diode 116 and second group of inductor 110 is not overlapping and the sweep limits of the range of exposures of second group of light-emitting diode 118 and first group of inductor 108 is not overlapping.Then, light emitting module control circuit 106 can be controlled the shinny sequential of light emitting module 104 and make first red light emitting diodes, first green LED, first blue LED, second red light emitting diodes, second green LED and second blue LED shinny.
Next will illustrate when first group of light-emitting diode 116 and second group of light-emitting diode 118 during, and how control the shinny sequential of light emitting module 104, and reach the function of scanning double-side simultaneously by light emitting module control circuit 106 at same position scanning document 102.Please refer to Fig. 5, it is for when first group of light-emitting diode 116 and second group of light-emitting diode 118 schematic diagram during at same position scanning document 102.In Fig. 5, the shinny light-emitting diodes piping different colours in first group of light-emitting diode 116 and the second group of light-emitting diode 118.That is light emitting module control circuit 106 can make the light-emitting diode of the different colours in first group of light-emitting diode 116 and the second group of light-emitting diode 118 simultaneously shinny.Next will above-mentioned situation be described with a preferred embodiment.Please refer to Fig. 6, it is the shinny sequential chart of light emitting module control circuit 106 control light emitting module 104 of the another preferred embodiment according to the present invention.This embodiment makes the light-emitting diode of the different colours in first group of light-emitting diode 116 and the second group of light-emitting diode 118 with an example in shinny for light emitting module control circuit 106.In this embodiment, to maintain the accurate bit representation light-emitting diode of low-voltage shinny when light-emitting diode, and to maintain the accurate bit representation light-emitting diode of high voltage not shinny when light-emitting diode.In Fig. 6, double-faced scanning device 10 can first group of light-emitting diode 116 of control and second group of light-emitting diode 118 is positioned at that the sweep limits of the range of exposures of same position, first group of light-emitting diode 116 and second group of inductor 110 is overlapping, the sweep limits of the range of exposures of second group of light-emitting diode 118 and first group of inductor 108 is overlapping or the sweep limits of the range of exposures of first group of light-emitting diode 116 and second group of inductor 110 is overlapping and the sweep limits of the range of exposures of second group of light-emitting diode 118 and first group of inductor 108 is overlapping.Then, the shinny sequential that light emitting module control circuit 106 can control light emitting modules 104 and make that first red light emitting diodes and second green LED are shinny simultaneously, first green LED is shinny with second blue LED while, first blue LED and second red light emitting diodes while be shinny.
In sum, the present invention utilizes two groups of light-emitting diodes to be used as the light emitting source of double-faced scanning device, because light-emitting diode do not need warming-up, and the characteristic of Push And Release fast, therefore can reach the function of while scanning double-side easily.
Claims (18)
1. the How It Works of a double-faced scanning device, in order to scan a file, this double-faced scanning device comprises a light emitting module, and one first group of inductor and one second group of inductor, wherein this light emitting module comprises one first group of light source and one second group of light source, light source when being used as the front of scanning this document and reverse side is characterized in that this How It Works comprises the following steps: respectively
The sweep limits of controlling the range of exposures of not overlapping and this second group of light source of the sweep limits of the range of exposures of this first group of light source and this second group of inductor and this first group of inductor is not overlapping;
Make the shinny front and the reverse side that scans this document of light source of the same color in this first group of light source and this second group of light source;
One optical signalling of gained when receiving the front of scanning this document and reverse side, and convert this optical signalling to an analog electronic signal;
Convert this analog electronic signal to a digital electronic signal; And
Export this digital electronic signal.
2. the How It Works of double-faced scanning device as claimed in claim 1 is characterized in that, this first group of light source comprises redness, green and blue light source.
3. the How It Works of double-faced scanning device as claimed in claim 1 is characterized in that, this second group of light source comprises redness, green and blue light source.
4. the How It Works of double-faced scanning device as claimed in claim 1 is characterized in that, this first group of light source is one first group of light-emitting diode.
5. the How It Works of double-faced scanning device as claimed in claim 1 is characterized in that, this second group of light source is one second group of light-emitting diode.
6. the How It Works of a double-faced scanning device, in order to scan a file, this double-faced scanning device comprises a light emitting module, and one first group of inductor and one second group of inductor, wherein this light emitting module comprises one first group of light source and one second group of light source, light source when being used as the front of scanning this document and reverse side is characterized in that this How It Works comprises the following steps: respectively
Make shinny front and the reverse side that scans this document of light sources of different colors in this first group of light source and this second group of light source;
One optical signalling of gained when receiving the front of scanning this document and reverse side, and convert this optical signalling to an analog electronic signal;
Convert this analog electronic signal to a digital electronic signal; And
Export this digital electronic signal.
7. the How It Works of double-faced scanning device as claimed in claim 6 is characterized in that, this first group of light source and this second group of light source are positioned at same position.
8. the How It Works of double-faced scanning device as claimed in claim 6 is characterized in that, the sweep limits of the range of exposures of this first group of light source and this second group of inductor is overlapping.
9. the How It Works of double-faced scanning device as claimed in claim 6 is characterized in that, the sweep limits of the range of exposures of this second group of light source and this first group of inductor is overlapping.
10. the How It Works of double-faced scanning device as claimed in claim 6, it is characterized in that the range of exposures of overlapping and this second group of light source of the sweep limits of the range of exposures of this first group of light source and this second group of inductor and the sweep limits of this first group of inductor are overlapping.
11. the How It Works of double-faced scanning device as claimed in claim 6 is characterized in that, this first group of light source and this second group of light source are positioned at diverse location.
12. the How It Works of double-faced scanning device as claimed in claim 6 is characterized in that, the sweep limits of the range of exposures of this first group of light source and this second group of inductor is not overlapping.
13. the How It Works of double-faced scanning device as claimed in claim 6 is characterized in that, the sweep limits of the range of exposures of this second group of light source and this first group of inductor is not overlapping.
14. the How It Works of double-faced scanning device as claimed in claim 6, it is characterized in that the range of exposures of not overlapping and this second group of light source of the sweep limits of the range of exposures of this first group of light source and this second group of inductor and the sweep limits of this first group of inductor are not overlapping.
15. the How It Works of double-faced scanning device as claimed in claim 6 is characterized in that, this first group of light source comprises redness, green and blue light source.
16. the How It Works of double-faced scanning device as claimed in claim 6 is characterized in that, this second group of light source comprises redness, green and blue light source.
17. the How It Works of double-faced scanning device as claimed in claim 6 is characterized in that, this first group of light source is one first group of light-emitting diode.
18. the How It Works of double-faced scanning device as claimed in claim 6 is characterized in that, this second group of light source is one second group of light-emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031020046A CN1520148A (en) | 2003-01-24 | 2003-01-24 | Action method of double sided scaning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031020046A CN1520148A (en) | 2003-01-24 | 2003-01-24 | Action method of double sided scaning device |
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| Publication Number | Publication Date |
|---|---|
| CN1520148A true CN1520148A (en) | 2004-08-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA031020046A Withdrawn CN1520148A (en) | 2003-01-24 | 2003-01-24 | Action method of double sided scaning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1520148A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100504660C (en) * | 2006-08-23 | 2009-06-24 | 联想(北京)有限公司 | Copying machine and copying method |
| CN101986686A (en) * | 2010-12-06 | 2011-03-16 | 威海华菱光电有限公司 | Contact image sensor |
| CN101282395B (en) * | 2007-04-06 | 2011-05-11 | 夏普株式会社 | Image processing system and image processing method |
| CN102014235B (en) * | 2009-09-04 | 2016-12-14 | 虹光精密工业（苏州）有限公司 | The image capture equipment of adjustable scan-image attribute |
-
2003
- 2003-01-24 CN CNA031020046A patent/CN1520148A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100504660C (en) * | 2006-08-23 | 2009-06-24 | 联想(北京)有限公司 | Copying machine and copying method |
| CN101282395B (en) * | 2007-04-06 | 2011-05-11 | 夏普株式会社 | Image processing system and image processing method |
| CN102014235B (en) * | 2009-09-04 | 2016-12-14 | 虹光精密工业（苏州）有限公司 | The image capture equipment of adjustable scan-image attribute |
| CN101986686A (en) * | 2010-12-06 | 2011-03-16 | 威海华菱光电有限公司 | Contact image sensor |
| CN101986686B (en) * | 2010-12-06 | 2015-11-11 | 威海华菱光电有限公司 | Contact-type image sensor |
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| C04 | Withdrawal of patent application after publication (patent law 2001) | ||
| WW01 | Invention patent application withdrawn after publication |