CN1160939C - Scanner able to detect boundary of object to be scanned - Google Patents

Scanner able to detect boundary of object to be scanned Download PDF

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Publication number
CN1160939C
CN1160939C CNB001040200A CN00104020A CN1160939C CN 1160939 C CN1160939 C CN 1160939C CN B001040200 A CNB001040200 A CN B001040200A CN 00104020 A CN00104020 A CN 00104020A CN 1160939 C CN1160939 C CN 1160939C
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China
Prior art keywords
scanner
order
edge detector
border
light source
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Expired - Fee Related
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CNB001040200A
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Chinese (zh)
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CN1313702A (en
Inventor
盛少澜
陈琰成
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Avision Inc
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Avision Inc
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Abstract

The present invention relates to a scanner for detecting a boundary of an object to be scanned, which comprises a main body, a scanning mold assembly and a boundary detector, wherein the main body comprises a transparent plate which is used for holding the object; the scanning mold assembly is arranged in the main body and is used for scanning patterns formed by the object on the transparent plate; the boundary detector is arranged in the main body and is used for detecting the boundary of the object. The present invention can obtain the size of the object by detecting the boundary of the object, and thus, the present invention can automatically execute the functions of magnification, reduction, etc.

Description

Can detect the scanner on an object to be scanned border
Technical field
The present invention relates to a kind of scanner that can detect an object to be scanned border, particularly relate to a kind ofly before scanning one object, just can detect the scanner of this boundary of object fast and accurately.
Background technology
At present, scanner in the employed image-input device of computer user, plays an important effect.General scanner had the function (for example United States Patent (USP) the 4th, 837, No. 635) of a prescan (prescan) mostly before formal execution scanning.Just, before formally with a high resolution scanning object, earlier with low resolution scanned object fast, the big slightly image of generation one on computer screen then.Except the supply user inspects, more can provide the image of selecting scanning area and scanned object to amplify the foundation of dwindling.
Just, so the function of prescan certainly will need external computer and screen, rely on the inspecting of human eye after, its follow-up work just can be carried out.If, only dwindle for the fixedly amplification between the paper size that often runs in the daily life, such as the conversion of A3 size to image between the B5 size, then the needed instrument cost of prescan function is sizable, and also is convenient inadequately on using.On the other hand, though prescan can scan fast,, scanning the needed time of whole object roughly with one in Scanning mold assembly row CCD also is appreciable in fact.After scanning a line, after the electric charge that goes out because of photoinduction among each CCD all must send out in order, just can carry out the scanning of next bar line, such process is very consuming time, particularly for the scanner of A3 size, even if rough prescan function will also can spend long time, yet the scanner of A3 size is connected upward general printer, become gradually and reached in the office that digital file is handled and in order to replace the staple product of traditional copying machines, therefore provide a kind of accurately and the scanner on fast detecting object to be scanned border, be the key problem of present large scale scanner development.
In fact, as long as determine the edge of object to be scanned, learning the size of object, is not the image of whole object, just can carry out the amplification reduction capability of image.
In the same image processing apparatus, though existing copying machines has had the function that detects the certain paper size, in fact its execution mode is also inequality.The method of copying machines realization amplification reduction capability is that the several fixed positions under the copying machines transparent panel are equiped with edge detector.Such as, under the relative position of transparent panel A4 and B5 size, edge detector is set respectively, respectively called after A4 edge detector and B5 edge detector.If the A4 edge detector detects the existence that there is the border specific region, top, the size of the object of expression transparent panel top is exactly A4, so, just can carry out amplifying between specific size the function of dwindling.
But, because the edge detector of copying machines is fixed, so copying machines also can only be done the function that amplification is dwindled between specific size.Just in case the object on the transparent panel does not belong among original several sizes, then copying machines has no way of recognizing the size of object, or its recognition result classified as a kind of in several specific sizes rigidly, amplify the also forfeiture of dwindling thereupon of function certainly.And in scanner,, dwindle into certain size (as A4 or B5 size) in order to the image that object produced on the transparent panel is amplified automatically if carry out the function that a kind of automatic amplification is dwindled, then employed method can not conform with demand especially in the copying machines.
Summary of the invention
The object of the present invention is to provide the scanner that just can learn object size to be scanned fast and accurately of inspecting of a kind of no computer and screen, it can detect the object size and be not limited to some specific sizes, can carry out follow-up picture and amplify and dwindle.
The object of the present invention is achieved like this, and a kind of scanner that detects an object to be scanned border promptly is provided, and it includes: a body, include one in order to be the transparent panel of putting this object, the one scan membrane module is located in this body, in order to scan the object on this transparent panel; And a border detector, be located in this body, in order to detect the border of this object; Wherein, this Scanning mold assembly is to be arranged in this body by one first desired trajectory move mode, this edge detector is located in this body with fixed form, in order to detect the border of this object on this first desired trajectory direction, wherein, this edge detector includes one and grows the limit, and it is parallel with this first desired trajectory to grow the limit.
The present invention also provides a kind of scanner that detects an object to be scanned border, and it includes: a body, include one in order to be the transparent panel of putting this object, and the one scan membrane module is located in this body, in order to scan the object on this transparent panel; And a border detector, be located in this body, in order to detect the border of this object; Wherein, this Scanning mold assembly is to be arranged in this body by one first desired trajectory move mode, and wherein, this edge detector is to be arranged in this body with the synchronization-moving mode of this Scanning mold assembly.
The present invention also provides a kind of scanner that detects an object to be scanned border, and it includes: a body, include one in order to be the transparent panel of putting this object, and the one scan membrane module is located in this body, in order to scan the object on this transparent panel; And a border detector, be located in this body, in order to detect the border of this object; Wherein, this Scanning mold assembly to be being arranged in this body by one first desired trajectory move mode, and this edge detector to be being arranged in this body by one second desired trajectory move mode, and this edge detector and this Scanning mold assembly move and asynchronous.
The advantage of apparatus of the present invention is that it can just know the size of object to be scanned without prescan, therefore, does not need to connect computer and display and just can directly amplify the function of dwindling; The present invention can also detect the object of any size, but be located at intrinsic edge detector or come detection boundaries with the mode detection boundaries of fast moving or in the mode that contains possible most paper sizes, so, can detect the border of different big small articles, to learn the size of object, this scanner is applicable to be scanned of all size, and sweep speed is fast.
Description of drawings
Below in conjunction with accompanying drawing, describe embodiments of the invention in detail, wherein:
Fig. 1 a is a first embodiment of the present invention schematic diagram;
Fig. 1 b is the schematic top plan view of Fig. 1 a;
Fig. 1 c is the generalized section of Fig. 1 a;
Fig. 2 a is a second embodiment of the present invention schematic diagram;
Fig. 2 b is the schematic top plan view of Fig. 2 a;
Fig. 3 a is Scanning mold assembly among Fig. 2 a and a kind of generalized section of edge detector;
Fig. 3 b is the Scanning mold assembly among Fig. 2 a and the another kind of generalized section of edge detector;
Fig. 4 a is a third embodiment of the present invention schematic diagram;
Fig. 4 b is the schematic top plan view of Fig. 4 a;
Fig. 5 is the generalized section of the edge detector among Fig. 4 a and Fig. 4 b.
Concrete implementation content
See also Fig. 1 a to Fig. 1 c, Fig. 1 a is a first embodiment of the present invention schematic diagram, and Fig. 1 b is the schematic top plan view of Fig. 1 a, and Fig. 1 c is the generalized section of Fig. 1 a.The present invention is for detecting the scanner 10 on an object to be scanned border.Scanner 10 includes a body (main body) 12, one scan membrane module (scanning module) 14, one border detector (edge detector) 16 and one cap 18.Body (main body) 12 includes a transparent panel 20 and puts object to be scanned 22, for example paper, picture etc. in order to be.One scan membrane module 14 is to press one first desired trajectory move mode, and for example the horizontal mode among the figure is located in the body 12, in order to the object 22 on the scanning transparent panel 20.Edge detector 16 is located in the body 12 with fixed form, in order to detect the border of object 22 on the first desired trajectory direction.Edge detector 16 includes a long limit, and long limit is parallel with first desired trajectory.Edge detector 16 comes detection boundaries in the mode that has contained most paper sizes.Cap 18 is arranged at body 12 with the rotating manner that can cover and raise the use location of object.
Edge detector 16 can fast detecting to the border that is placed on the object 22 on the transparent panel 20.By the calculating on border, can obtain the length on direction of object to be scanned.Have at least three kinds of methods can obtain length on another direction of object to be scanned, first kind is lookup table mode, because the size of paper is generally fixed,, obtain the length on the direction and can correspond to length on another direction naturally as the size of A4, B5 and so on.Second method is additionally to add the border that an edge detector detects object 22 on another direction.The third method is directly with zone on Scanning mold assembly 14 scanned objects owing to only scan a zone, so can be very the time on quick.
After the length of both direction obtains, just can learn the size of object and the position of placing.Then, just can carry out the object image and amplify the action of dwindling directly with software control Scanning mold assembly 14 scanned objects.And the designs such as calculating of amplification degree are the soluble problem of software design Shi Mingxian, and the present invention no longer describes.
By Fig. 1 b and Fig. 1 c as can be known, Scanning mold assembly 14 is individually independently with the action of edge detector 16.So edge detector 16 can have one first light source 28 to work alone, shown in Fig. 1 c.First light source 28 can be a fluorescent tube, in order to luminous irradiation object 22.Can include a set of lenses 30 and a luminance detection device 32 in the edge detector 16.Set of lenses 30 is used for making a strip region 34 of edge detector 16 tops to be imaged on the luminance detection device 32, and luminance detection device 32 just is used for detecting object 22 brightness of this strip region 34.Luminance detection device 32 utilizes the difference in the brightness, judges the border of object 22, to obtain the length of side of object 22.
Edge detector 16 also can not include first light source 28, only need utilize light source (secondary light source) the irradiation object 22 in the Scanning mold assembly 14.If the light source in the Scanning mold assembly 14 is enough strong, object 22 images on the luminance detection device 32 in the edge detector 16 with regard to enough brightness is arranged, and luminance detection device 32 just can be judged the border of object 22.Even say that edge detector 16 also can utilize extraneous light source to carry out Boundary Detection work when cap 18 does not cover object 22.So, as long as judge the just border of object 22 as can be known of light and shade on the transparent panel 20.
See also Fig. 2 a and Fig. 2 b, Fig. 2 a is a second embodiment of the present invention schematic diagram.Fig. 2 b is the schematic top plan view of Fig. 2 a.Edge detector 16 also can be located in the body 12 with move mode, in order to detect the border of object 22.Shown in Fig. 2 a and Fig. 2 b, edge detector 16 is attached on the Scanning mold assembly 14, with Scanning mold assembly 14 same moved further.
Edge detector 16 normally includes a luminance detection device, and also therefore the brightness in order to detecting edge detector 16 tops one corresponding specified point, certainly will will have the light source irradiation object.The design of edge detector 16 light sources can have dual mode, and a kind of is Scanning mold assembly 14 and edge detector 16 shared light sources, and another kind is that edge detector 16 uses an arbitrary source.See also Fig. 3 a, Fig. 3 a is Scanning mold assembly among Fig. 2 a and a kind of generalized section of edge detector.All contain a secondary light source 44 and image detection membrane module 46 in the general Scanning mold assembly 14.Secondary light source 44 is as fluorescent tube, in order to shine object 22 and to form a smooth reflection graphic patterns.Image detection membrane module 46 has generally included speculum 46a, lens 46b and opto-electronic conversion membrane module 46c etc., in order to detect secondary light source 44 formed reflected light pattern, shown in Fig. 3 a.If edge detector 16 and Scanning mold assembly 14 shared secondary light sources 44, because secondary light source 44 is a kind of large tracts of land irradiation light source, generally speaking edge detector 16 needs a cover set of lenses 30, a corresponding specified point on the edge detector 16 is imaged on the luminance detection device 32, could identifies boundary of object clearly.See also Fig. 3 b, Fig. 3 b is the Scanning mold assembly among Fig. 2 a and the another kind of generalized section of edge detector.Edge detector 16 can independently use one first light source 28, as laser diode, in order to a corresponding specified point of irradiation edge detector 16 tops.At this moment, edge detector 16 can not need set of lenses, and the 32 detected brightness of luminance detection device are the brightness of corresponding specified point, shown in Fig. 3 b.
See also Fig. 4 a and Fig. 4 b, Fig. 4 a is a third embodiment of the present invention schematic diagram.Fig. 4 b is the schematic top plan view of Fig. 4 a.Scanning mold assembly in the scanner of the present invention and edge detector can independently separately operate, and not necessarily need same moved further.Shown in Fig. 4 a and Fig. 4 b, scanner 40 includes a body 12, one scan membrane module 14, a border detector 42 and a cap 18.Scanning mold assembly 14 is to be arranged in the body 12 by one first desired trajectory move mode, and edge detector 42 is to be arranged in the body 12 by one second desired trajectory move mode.Edge detector 42 is also asynchronous with moving of Scanning mold assembly 14.
One track, 41 formation, second desired trajectory can be set in the body 12 to be moved to make things convenient for edge detector 42.Second desired trajectory is not must be parallel with first desired trajectory.The purpose of second desired trajectory is to make edge detector 42 two borders of object 22 of can passing through, so that edge detector 42 detects the border of object 22.
See also Fig. 5, Fig. 5 is the generalized section of the edge detector among Fig. 4 a and Fig. 4 b.Edge detector 42 includes one first light source 44 and a luminance detection device 46.First light source 44 is as laser diode, in order to luminous irradiation edge detector 42 tops one corresponding specified point.Luminance detection device 46 is in order to the brightness of the corresponding specified point of detecting edge detector 42 tops.
Scanner utilization edge detector of the present invention detects the boundary of object on the transparent panel.Therefore, can learn the size of object and the position of placing fast and accurately.Directly controlling the technology that printer (not passing through computer) carries out scanning photo-offset with the central processing unit (CPU) of scanner has been prior art (please refer to the Taiwan patent announcement No. 311200), also sell this series products (as the scanning photo-offset device of applicant's production) on the market, cooperate this directly prior art of control printer, do not need additionally to connect computer and screen, as long as scanner of the present invention connects a printer, just can directly amplify actions such as dwindling the object image, even can directly amplify the function of dwindling automatically, in order to being amplified automatically, the image that object produced on the transparent panel dwindles into certain size (as A3, A4 or B5 size).
Compare with the object size on the method discovery transparent panel of prescan with the prior art scanner, scanner utilization edge detector of the present invention detects the border of object to obtain the size of object.Therefore, scanner of the present invention does not need additionally to connect computer and screen, as long as scanner of the present invention connects a printer, no matter whether scanning machine arrives the A3 model greatly, the border that can obtain file to be scanned fast and accurately is to amplify actions such as dwindling the object image.Because the border of file to be scanned can be obtained fast and accurately, the function that scanner of the present invention also can have automatic amplification to dwindle dwindles into certain size in order to the image that object produced on the transparent panel is amplified automatically simultaneously.Though fast, accurately the size of paper to be scanned, need not be earlier just can automatically carry out file to be scanned and amplify the function of dwindling through prescan.
Though disclosed the present invention in conjunction with above preferred embodiment; yet it is not in order to qualification the present invention, any those skilled in the art, without departing from the spirit and scope of the present invention; should do and change and retouching, thus protection scope of the present invention should with enclose claim was defined is as the criterion.

Claims (18)

1. scanner that can detect an object to be scanned border, it includes:
One body includes one in order to being the transparent panel of putting this object,
The one scan membrane module is located in this body, in order to scan the object on this transparent panel; And
One border detector is located in this body, in order to detect the border of this object;
Wherein, this Scanning mold assembly is to be arranged in this body by one first desired trajectory move mode, this edge detector is located in this body with fixed form, in order to detect the border of this object on this first desired trajectory direction, it is characterized in that, this edge detector includes one and grows the limit, and it is parallel with this first desired trajectory to grow the limit.
2. scanner as claimed in claim 1, wherein, this edge detector includes a luminance detection device, in order to the object brightness of a strip region of detecting this edge detector top.
3. scanner as claimed in claim 1, wherein, this edge detector comprises one first light source, in order to this object of luminous irradiation.
4. scanner as claimed in claim 1, wherein, this Scanning mold assembly includes:
One secondary light source is in order to this object of luminous irradiation and form a reflected light pattern; And
One image detection membrane module is in order to detect this reflected light pattern.
5. scanner as claimed in claim 4, wherein, this secondary light source is a fluorescent tube.
6. scanner as claimed in claim 1, wherein, this scanner includes a cap in addition, is arranged at this body with the rotating manner that can cover and raise this object use location.
7. scanner that can detect an object to be scanned border, it includes:
One body includes one in order to being the transparent panel of putting this object,
The one scan membrane module is located in this body, in order to scan the object on this transparent panel; And
One border detector is located in this body, in order to detect the border of this object;
Wherein, this Scanning mold assembly is characterized in that to be arranged in this body by one first desired trajectory move mode this edge detector is to be arranged in this body with the synchronization-moving mode of this Scanning mold assembly.
8. scanner as claimed in claim 7, wherein, this Scanning mold assembly includes:
One secondary light source is in order to this object of luminous irradiation and form a reflected light pattern; And
One image detection membrane module is in order to detect this reflected light pattern.
9. scanner as claimed in claim 8, wherein, this edge detector includes a luminance detection device, in order to detect the brightness of this edge detector top one corresponding specified point.
10. scanner as claimed in claim 9, wherein, the light source of the brightness of this specified point is this secondary light source.
11. scanner as claimed in claim 9, wherein, this edge detector includes one first light source in addition, and the light source of the brightness of this specified point is this first light source.
12. scanner as claimed in claim 11, wherein, this first light source is a laser diode.
13. scanner as claimed in claim 7, wherein, this scanner includes a cap in addition, is arranged at this body with the rotating manner that can cover and raise this object use location.
14. the scanner that can detect an object to be scanned border, it includes:
One body includes one in order to being the transparent panel of putting this object,
The one scan membrane module is located in this body, in order to scan the object on this transparent panel; And
One border detector is located in this body, in order to detect the border of this object;
Wherein, this Scanning mold assembly is to be arranged in this body by one first desired trajectory move mode, it is characterized in that this edge detector to be being arranged in this body by one second desired trajectory move mode, and this edge detector and this Scanning mold assembly move and asynchronous.
15. scanner as claimed in claim 14, wherein, this edge detector includes a luminance detection device, in order to the brightness of a corresponding specified point of detecting this edge detector top.
16. scanner as claimed in claim 15, wherein, this edge detector includes one first light source in addition, in order to this this corresponding specified point of edge detector top of luminous irradiation.
17. scanner as claimed in claim 16, wherein, this first light source is a laser diode.
18. scanner as claimed in claim 14, wherein, this scanner includes a cap in addition, is arranged at this body with the rotating manner that can cover and raise this object use location.
CNB001040200A 2000-03-13 2000-03-13 Scanner able to detect boundary of object to be scanned Expired - Fee Related CN1160939C (en)

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Application Number Priority Date Filing Date Title
CNB001040200A CN1160939C (en) 2000-03-13 2000-03-13 Scanner able to detect boundary of object to be scanned

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Application Number Priority Date Filing Date Title
CNB001040200A CN1160939C (en) 2000-03-13 2000-03-13 Scanner able to detect boundary of object to be scanned

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CN1160939C true CN1160939C (en) 2004-08-04

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102256040B (en) * 2011-07-12 2013-07-31 苏州佳世达电通有限公司 Scan mode switching method and system thereof
CN103905685B (en) * 2012-12-25 2017-09-29 联想(北京)有限公司 A kind of ancillary equipment for aiding in mobile terminal to be scanned and scan method
CN108551538B (en) * 2018-06-21 2023-08-15 无锡旭锠智能科技有限公司 Platform movable type wide-width industrial scanning equipment and scanning method

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