CN1193149A - Platform image fetch device - Google Patents
Platform image fetch device Download PDFInfo
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- CN1193149A CN1193149A CN97103012A CN97103012A CN1193149A CN 1193149 A CN1193149 A CN 1193149A CN 97103012 A CN97103012 A CN 97103012A CN 97103012 A CN97103012 A CN 97103012A CN 1193149 A CN1193149 A CN 1193149A
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- scanning module
- predetermined pattern
- image
- distance
- fetch device
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- 238000000034 method Methods 0.000 claims description 21
- 230000004807 localization Effects 0.000 claims 6
- 239000003086 colorant Substances 0.000 claims 2
- 230000001133 acceleration Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- NHDHVHZZCFYRSB-UHFFFAOYSA-N pyriproxyfen Chemical compound C=1C=CC=NC=1OC(C)COC(C=C1)=CC=C1OC1=CC=CC=C1 NHDHVHZZCFYRSB-UHFFFAOYSA-N 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
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Abstract
The present invention relates to a platform type image fetch device, including an upper shell body, the central region of the upper shell body possesses a rectangular hole for placing transparent file bearing board, and its upper shell body possesses a lower surface; a preset pattern, it is placed on the lower surface, and adjoined to the periphery of said hole, and when the preset pattern is detected by said image fetch element, according to the distance at which the scanning module must be moved the initial location can be implemented.
Description
Location (positioning) adjusting gear and the method for initial (initialization) position of scanning module in the relevant image fetch device of the present invention.As known techniques, comprise image read element (CCD) and camera lens in the scanning module (scan module).
The technology of relevant image fetch device can be referring to U.S. Patent number 4,879, and 604,5,514,864,5,278,674.
The location of scanning module is considerable problem in image fetch device, and article one sweep trace that its major decision CCD element scan begins is positioned at the position of scanned document, so initial alignment can influence the correctness of whole scanning.Generally speaking, image fetch device all must be positioned to correct reference position when each start and during each been scanned backhaul.
Image fetch device on the market all is to utilize the interior fixing position sensor of image fetch device casing to cooperate the actuator of a correspondence on the scanning module that moves to do initial alignment now.
In detail, the scanning module of existing known techniques is to be driven belt and made scanning module vertically moving along file by motor.When scanning module moves to the intended orientation line, making sensor produce a signal via actuator actuated position sensor changes, when the microprocessor in the image fetch device detects this signal variation, send a controlling signal and make scanning module be positioned at a predetermined accurate position.
When utilizing position sensor, actuator to do the scanning module location, need extra circuit, distribution in design, the complexity that can increase design and make.When making, can cause failure rate to promote the decline of qualification rate.When assembling, also deepen degree of difficulty and complicacy.In use, if sensor, actuator break down, have a strong impact on especially whole image fetch device can't correctly be operated.In addition with regard to the cost viewpoint, many elements, cost increases naturally.
Based on above factor, the invention provides a location device and method, can be accurately with the scanning module location, but must aforesaid position sensor, actuator.
A kind of image fetch device provided by the invention, this reading device has the one scan module, this scanning module has an image read element, this reading device comprises: a upper shell, about middle section tool one hole of this upper shell is for settling a transparent file loading plate, define a hole periphery around this hole, upper shell has a lower surface; One predetermined pattern, it is to be placed in this upper shell lower surface and a precalculated position x of this hole periphery relatively, when aforementioned image read element reads this predetermined pattern, can determine according to this this scanning module be positioned to an intended orientation line the distance that need move.
The method of location one scan module in a kind of image fetch device provided by the invention, this scanning module tool one image read element, this reading device has a upper shell, and about middle section tool one hole of this upper shell, define a hole periphery around this hole, one predetermined pattern is placed in this upper shell lower surface and a precalculated position x of this hole periphery relatively, and the method is positioned at the position line place of this hole periphery one distance, delta D relatively with this scanning module, comprises the following step:
(1) this scanning module is moved to this predetermined pattern, start this scanning module simultaneously to read image;
(2) repeated execution of steps (1), execution in step (3) when the judgement image that this scanning module read satisfied is scheduled to rule wherein reads this predetermined pattern to judging that satisfying the distance, delta d that this scanning module moved in this predetermined rule process is given value from this scanning module;
(3) this scanning module set by step the moving direction of (1) continue the distance of mobile Δ D-Δ d-Δ x, Δ x is the distance of this predetermined pattern precalculated position x with respect to this hole periphery.
For making above-mentioned purpose of the present invention, feature and advantage can become apparent in conjunction with the embodiments and be described below with reference to the drawings.
Brief Description Of Drawings:
Figure 1A discloses an image fetch device;
Figure 1B discloses among the present invention image fetch device upper shell inside surface and the present invention adopts the residing position of a predetermined pattern;
Fig. 2 discloses an embodiment of this predetermined pattern;
Fig. 3 A discloses the distance relation of predetermined pattern and position line;
Fig. 3 B discloses the distance relation preferred embodiment of predetermined pattern and position line;
Fig. 4 discloses the flow process of method among the present invention.
The basic function of image fetch device is utilized image read element (as: CCD) exactly, and data is scanned up in the computer.Therefore we can utilize the function of image read element originally, scan a predetermined pattern (pattern), as the foundation of scanning module location.
Shown in Figure 1A, a platform image fetch device 10 comprises a upper shell 11, and its about middle position has for the rectangle hole of settling a file loading plate 13, and scanned document promptly places and supplies scanning on the file loading plate 13, and the file loading plate can be glass plate.Shown in Figure 1B and Figure 1A, define a hole periphery 112,114,116,118 around the rectangle hole of upper shell 11 about middle positions, for the file loading plate (platen) 13 of settling a transparent material (glass).
Along hole periphery 112, the present invention arranges a predetermined pattern 12 at the lower surface of upper shell 11; As Fig. 3 A, this predetermined pattern 12 is a preset reference position x who is placed in this upper shell lower surface and contiguous this hole periphery 112, and Δ x is the distance of this predetermined pattern reference position x with respect to this hole periphery 112, and Δ x 〉=0.This predetermined pattern can be formed by a plurality of lines, figure or literal, and its color can be black and white or colour; This predetermined pattern 12 can be printed in lower surface and is the part of lower surface along hole periphery 112, also can be another element is attached at upper shell 11 along hole periphery 112 lower surface.The predetermined pattern embodiment of one simple form is the staggered pattern of irregular black and white bar chart that is exposed among Fig. 2.
As known image fetch device, moment scanning module 31 the CD-ROM drive motor of scanning beginning is to be in acceleration mode, in this section in the accelerating period, scanning module 31 is (otherwise the image data that rapid change is read down will be out of shape) of wave-off normally, therefore the initial alignment of scanning module 31 must be with respect to these hole periphery 112 1 preset distance Δ D places, and wherein Δ D is that scanning module 31 (comprises above-mentioned this scanning module 31 by static acceleration by rest position to beginning to read the required displacement of image, and other mechanism design, required separation distances such as module locking).
This scanning module 31 moves state when positioning to these predetermined pattern 12 directions, as Fig. 3 A, wherein the position line 30 is the extension line of hole periphery 112, the position line at scanning module 31 places when line 36 confirms that for this image fetch device microprocessor scanning module 31 has read this predetermined pattern, this is to judge that satisfying one is scheduled in the rule process because read this predetermined pattern to this microprocessor from this scanning module 31, microprocessor is done analysis need expend some time Δ t, in this period Δ t scanning module 31 still mobile Δ d distances.Judging when this microprocessor that image that this scanning module 31 read satisfies should be predetermined during rule, and this scanning module 31 can continue the distance of mobile Δ D-Δ d-Δ x by former direction of motion.
And in most preferred embodiment, shown in Fig. 3 B, this predetermined pattern position x is adjacent to this hole periphery 112, be that Δ x is 0, therefore judging image that this scanning module 31 is read when this microprocessor satisfies should be scheduled to rule the time, need only the readvance distance of Δ D-Δ d of scanning module 31 can be learnt, so just scanning module 31 position line 38 can be positioned.
This predetermined rule can be known any image comparison technology, and (the GTG value is calculated relatively, color and luster relatively, the literal lines relatively), as long as the image that definite this scanning module 31 is read is identical with predetermined pattern essence, for example: image that is read when this scanning module 31 and the image position between predetermined pattern or GTG value difference are different from 1%, judge that promptly satisfy should predetermined rule.
With reference to figure 4 is process flow diagram of the present invention.Step 40 is the location beginning, and step 42 starts this scanning module 31 to read image, and step 44 judges whether the image that this scanning module 31 is read satisfies a predetermined rule, so to determine whether this scanning module 31 reads this predetermined pattern 12.As non-, then enter step 46, this scanning module 31 is moved (the normally displacement of a sweep trace to this predetermined pattern direction, as: the hardware scanning resolution is 300dpi, then move 1/300 inch), get back to step 42 simultaneously, be scheduled to rule up to satisfied being somebody's turn to do of image that this scanning module 31 of step 44 judgement is read.If microprocessor is judged the image that this scanning module 31 is read and has been satisfied in the time of should being scheduled to rule, then enter step 48,42 former direction of motion continues this scanning module 31 distance of mobile Δ D-Δ d-Δ x set by step.In most preferred embodiment, because Δ x=0 can be positioned at this scanning module 31 with respect in one of this hole periphery distance, delta D position line 38 places so 31 of this scanning module need to continue mobile Δ D-Δ d distance.Step 50 is the end of finder.
Comprehensive the above, the present invention only need utilize the function of scanning module originally, cooperates the judgement of predetermined pattern, does not need position sensor, can reach the location of scanning module; Therefore the present invention has following characteristics: 1, reduce cost: remove position sensor and relevant circuit outfit thereof fully, can reduce cost of products.2, simplified design, assembling: owing to save position sensor and line related thereof, no matter be in design or assembling, all more simple and have bigger space to use, more flexible.3, lower failure rate: many elements, with regard to the chance of many faults, with regard to many one deck misgivings.Therefore saving position sensor can reduce failure rate, increases the yield of production, can reduce the chance of maintenance simultaneously.
Though the present invention discloses as above with a preferred embodiment, right its is not in order to limit the present invention, anyly have the knack of this skill person, without departing from the spirit and scope of the present invention, when doing a little change and retouching, for example: as if quickening, can not consider this microprocessor judgement satisfied one predetermined rule required time Δ t in the future, so also can ignore in the mobile Δ d distance of period Δ t scanning module along with the microprocessor arithmetic speed.Therefore protection scope of the present invention is as the criterion when looking the claim person of defining of the present invention.
Claims (17)
1, a kind of image fetch device, this reading device has the one scan module, and this scanning module has an image read element, and this reading device comprises:
One upper shell, about middle section tool one hole of this upper shell defines a hole periphery for settling a transparent file loading plate around this hole, and upper shell has a lower surface;
One predetermined pattern, it is to be placed in this upper shell lower surface and a precalculated position x of this hole periphery relatively, when aforementioned image read element reads this predetermined pattern, can determine according to this this scanning module be positioned to an intended orientation line the distance that need move.
2, image fetch device as claimed in claim 1, wherein, this scanning module moves to position to this predetermined pattern direction.
3, image fetch device as claimed in claim 2, wherein, this device more comprises:
One microprocessor is judged the image that this scanning group read, and this scanning module reads this predetermined pattern to this microprocessor judgement satisfied one predetermined rule process certainly, and the distance that this scanning module moved is Δ d.
4, image fetch device as claimed in claim 3, wherein, microprocessor judges that the image that this scanning module reads satisfies in the time of should being scheduled to rule, this scanning module can continue the distance of mobile Δ D-Δ d-Δ x by former direction of motion, Δ D is the distance of this intended orientation line with respect to this periphery, and Δ x is the distance of this predetermined pattern precalculated position x with respect to this hole periphery.
5, image fetch device as claimed in claim 4, wherein, Δ x is 0 o'clock, and judging when this microprocessor that image that this scanning module reads satisfies should be predetermined during rule, and this scanning module continues the distance of mobile Δ D-Δ d by former direction of motion.
6, image fetch device as claimed in claim 1, wherein, this predetermined pattern is that a plurality of black rectangular, white rectangular pattern interleaved set become.
7, image fetch device as claimed in claim 1, wherein, this predetermined pattern is the staggered composition of the pattern of a plurality of different colors.
8, image fetch device as claimed in claim 1, wherein, this predetermined pattern is a character pattern.
9, image fetch device as claimed in claim 1, wherein, this predetermined pattern is to be formed at described lower surface with mode of printing.
10, image fetch device as claimed in claim 1, wherein, this predetermined pattern system is attached at described lower surface.
11, the method for location one scan module in a kind of image fetch device, this scanning module tool one image read element, this reading device has a upper shell, and about middle section tool one hole of this upper shell, define a hole periphery around this hole, one predetermined pattern is placed in this upper shell lower surface and a precalculated position x of this hole periphery relatively, and the method is positioned at the position line place of this hole periphery one distance, delta D relatively with this scanning module, comprises the following step:
(1) this scanning module is moved to this predetermined pattern, start this scanning module simultaneously to read image;
(2) repeated execution of steps (1), execution in step (3) when the judgement image that this scanning module read satisfied is scheduled to rule wherein reads this predetermined pattern to judging that satisfying the distance, delta d that this scanning module moved in this predetermined rule process is given value from this scanning module;
(3) this scanning module set by step the moving direction of (1) continue the distance of mobile Δ D-Δ d-Δ x, Δ x is the distance of this predetermined pattern precalculated position x with respect to this hole periphery.
12, scanning module localization method as claimed in claim 11, wherein, Δ x is 0 o'clock, should be predetermined during rule in step (3) when judging that image that this scanning module read satisfies, and this scanning module moving direction of (1) set by step continues the distance of mobile Δ D-Δ d.
13, scanning module localization method as claimed in claim 11, wherein, this predetermined pattern is that a plurality of black rectangular, white rectangular pattern interleaved set become.
14, scanning module localization method as claimed in claim 11, wherein, this predetermined pattern is the staggered composition of the pattern of a plurality of different colors.
15, scanning module localization method as claimed in claim 11, wherein, this predetermined pattern is a character pattern.
16, scanning module localization method as claimed in claim 11, wherein, this predetermined pattern is to be formed at described lower surface with mode of printing.
17, scanning module localization method as claimed in claim 11, wherein, this predetermined pattern is to be attached at described lower surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97103012A CN1083593C (en) | 1997-03-10 | 1997-03-10 | Platform image fetch device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97103012A CN1083593C (en) | 1997-03-10 | 1997-03-10 | Platform image fetch device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1193149A true CN1193149A (en) | 1998-09-16 |
| CN1083593C CN1083593C (en) | 2002-04-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97103012A Expired - Fee Related CN1083593C (en) | 1997-03-10 | 1997-03-10 | Platform image fetch device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1083593C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101415058B (en) * | 2007-10-19 | 2010-06-30 | 虹光精密工业（苏州）有限公司 | Scanning device and method |
| US7903300B2 (en) | 2007-09-17 | 2011-03-08 | Avision Inc. | Scanning device and method thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63266961A (en) * | 1987-04-23 | 1988-11-04 | Alps Electric Co Ltd | Image scanner |
| JP2809627B2 (en) * | 1987-07-22 | 1998-10-15 | 株式会社東芝 | Image reading device |
| JPH08279018A (en) * | 1995-04-06 | 1996-10-22 | Dainippon Printing Co Ltd | Image input device |
-
1997
- 1997-03-10 CN CN97103012A patent/CN1083593C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7903300B2 (en) | 2007-09-17 | 2011-03-08 | Avision Inc. | Scanning device and method thereof |
| CN101415058B (en) * | 2007-10-19 | 2010-06-30 | 虹光精密工业（苏州）有限公司 | Scanning device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1083593C (en) | 2002-04-24 |
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Owner name: BENQ ELECTRONS STOCK CO., LTD. Free format text: FORMER NAME OR ADDRESS: MINGHONG STOCK CO., LTD. |
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Patentee after: Benq Corp. Patentee before: Mingqi Computer Co., Ltd. |
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Owner name: BENQ MOTOR CO., LTD. Free format text: FORMER NAME OR ADDRESS: BENQ ELECTRONS STOCK CO., LTD. |
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Owner name: QISDA TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: BENQ CORPORATION. Effective date: 20100408 |
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| CF01 | Termination of patent right due to non-payment of annual fee |