CN1614985A - Image picker and method - Google Patents
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- CN1614985A CN1614985A CN 200310108498 CN200310108498A CN1614985A CN 1614985 A CN1614985 A CN 1614985A CN 200310108498 CN200310108498 CN 200310108498 CN 200310108498 A CN200310108498 A CN 200310108498A CN 1614985 A CN1614985 A CN 1614985A
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Abstract
The invention is used in scanning n documents with first side and second side, and consists of first and second image sensor used in sensing the first side and second side of document. The image sensor includes q groups of memory. The method includes: the m under scanning document is firstly scanned, and the first and second material of the under scanning document is stored in one group of q groups and outputs it. The m is less than or equal to n and its initial value is 1. Repeating the above step until n documents under scanning is captured.
Description
Technical field
The present invention relates to a kind of image capturing device and method thereof of doing dual-side image scanning, relate in particular to a kind of image capturing device and method thereof that shortens the scanning stand-by period with increase scanning work efficient.
Background technology
In the epoch of stressing speed and efficient now, the development of scanner is except towards increasing the resolution aspect to improve the scanning quality, also constantly research and development innovation in the lifting of sweep speed, for example: early stage falt bed scanner can only be placed on file to be scanned scanning respectively on the scanning platform one by one, thereby only scan institute's time spent will be very long, along with the development of autoamtic paper feeding technology afterwards, further use automatic paper feeder (Automatic Document Feeder; ADF) but one-time continuous send tens pages file to be scanned, again image document is passed to Computer Processing, can save with hand and pick and place scanning document institute's time spent.Even the scanner with autoamtic paper feeding function can carry out duplex scanning (One Pass DuplexScanning) action to scanning document.
With reference to Figure 1A, to add that the platform-type image capturing device that can make duplex scanning behind the automatic paper feeder (ADF) is an example.Image capturing device 100 comprises base 110 and is positioned at ADF120 above the base 110.ADF120 is used for presenting file 122 to be scanned, and file to be scanned 122 has first data 122a (one side up) and second data 122b (one side down); Base 110 comprises scanning platform 112, first imageing sensor 114 and circuit board 116, and ADF120 then comprises second imageing sensor 124.When carrying out file scanning, file 122 to be scanned is sent into and is delivered on the scanning platform 112 by ADF120, first data 122a and second the data 122b that treats scanning document 122 simultaneously by first imageing sensor 114 in the base 110 and second imageing sensor 124 among the ADF120 scans again, the image document of scanning gained is converted into electric signal and is stored on the circuit board 116, or further is sent on the external main frame 130.Figure 1B then represents the paper feeding scanner (Sheet Feed Scanner) that can make duplex scanning, and it cooperates the mode of automatic paper feeder roughly the same in the mode of carrying out duplex scanning with falt bed scanner among above-mentioned Figure 1A.
With reference to figure 1C, it shows among Figure 1A and Figure 1B the imageing sensor scan image and with image document memory and the calcspar that transmits.Circuit board 116 also comprises memory modules 117 and image processor 118, and memory modules 117 has first internal memory (Buffer Memory) 117a and second internal memory (Buffer Memory) 117b, be used for respectively temporary first imageing sensor 114 and first data 122a of correspondence of 124 sensings of second imageing sensor and image document I122a and the I122b of second data 122b, and image processor 118 is used for sending main frame 130 to after image document I122a that memory modules 117 is discharged and I122b are handled.
It should be noted that, the image document I122a of first imageing sensor, 114 scanning gained can discharge earlier and give image processor 118, again image document I122b is discharged to image processor 118 and transmitted, and with high resolution scanning (for example 600dpi), imageing sensor 114,124 sweep speed is also faster than the speed of memory modules 117 release image document I122a and I122b usually, be that sweep time (ts) is usually less than data transmission period (td), shown in Fig. 1 D, if file institute's time spent of duplex scanning is made as T1, and the image document I122a of scanning gained and the time that I122b discharges to image processor 118 are respectively T1a and T1b, T1a and T1b are greater than the T1 value so, therefore, must wait for the image document that could continue to store next file gained of scanning after image document I122a and I122b discharge, this section scanning stand-by period Tw is (T1a+T1b-T1), then scan next file at every turn and all need this section scanning stand-by period, if file number to be scanned is many more, the required scanning stand-by period that slatterns of then whole scanning process will be long more, thereby, greatly reduce the speed and the efficient of scanning.
Summary of the invention
In view of this, purpose of the present invention just is a kind of image capturing device and method thereof are provided, and utilizes the increasing configuration of internal memory, saves image capturing device and waits for the d/d time of image document in the internal memory, thereby increase the speed of scanning.
According to purpose of the present invention, a kind of image capturing device is proposed, be used for scanning many files to be scanned, each file to be scanned comprises first data and second data, image capturing device comprises first imageing sensor, be used for first data of each file to be scanned of sensing, and first image document of corresponding first data of output, and second imageing sensor, be used for second data of sensing file to be scanned, and second image document of corresponding second data of output, image capturing device also comprises a plurality of first internal memories and second internal memory, is used for temporary respectively pairing first image document of file to be scanned and second image document.
According to purpose of the present invention, a kind of image capturing device is also proposed, be used for scanning many files to be scanned, each file to be scanned comprises first data and second data, image capturing device comprises first imageing sensor, be used for first data of sensing file to be scanned and first image document of corresponding first data of output; And circuit board with many group internal memories, and second imageing sensor, be used for second data of sensing file to be scanned, and second image document of corresponding second data of output, wherein respectively organize internal memory and comprise first internal memory and second internal memory, be used for keeping in pairing first image document of file to be scanned and second image document respectively.
According to purpose of the present invention, another kind of image capturing device is also proposed, be used for scanning multipage file to be scanned, image capturing device comprises imageing sensor, is used for sensing file to be scanned, and the corresponding image document of output; And circuit board, being used for image document output, circuit board comprises a plurality of internal memories, is used for the temporary respectively pairing image document of each file to be scanned; And image processor, connect each internal memory, be used for receiving image document and export then.
According to purpose of the present invention, a kind of image pickup method is proposed, be used in image capturing device, scanning n and open file to be scanned, and each file to be scanned comprises first data and second data, image capturing device has q group internal memory, n and q are positive integer, its method is summarized as follows: scan m and open file to be scanned, and open in first data of file to be scanned and first internal memory that second data is temporarily stored in one group of internal memory in the memory modules and second internal memory m and output, m is 1 for positive integer and the initial value smaller or equal to n, treat then in the q group internal memory, at least exist and save as sky in first internal memory and second of one group of internal memory or fully with after first data and second the data output, the m value is increased progressively 1, and repeat above-mentioned steps till finish the capturing images that n opens file to be scanned.
According to purpose of the present invention, a kind of image scan method is also proposed, be used in image capturing device, scanning n page or leaf file to be scanned, image capturing device has q group internal memory, n and q are positive integer, its method is summarized as follows: at first, make that m is 1 to the positive integer of n, when m=1, judge that then whether the m value is less than q, if m＜q is k=m then, if the m value is not less than q, then first data and second data that k=(m mod q)+1 utilizes first imageing sensor and second imageing sensor while sensing m opens file to be scanned followed, be temporarily stored in the k group internal memory the first image document Ima and the second image document Imb of corresponding first data of sensing gained and second data and output, whether then judge the m value less than n, if the m value less than n, increases by 1 with the m value, and get back to and judge that the m value is whether less than the step of q, till all images acquisition finishes.
Description of drawings
But Figure 1A is the falt bed scanner structural representation of duplex scanning;
But Figure 1B is the paper feeding scanner structural representation of duplex scanning;
Fig. 1 C is an imageing sensor scanning document image and with image document memory and the calcspar that transmits among Figure 1A and Figure 1B;
The schematic diagram that Fig. 1 D compared with data transmission period (td) for the sweep time (ts) among Fig. 1 C;
Fig. 2 A is applied in the structural representation that falt bed scanner adds automatic paper feeder for the present invention;
Fig. 2 B is applied in the structural representation of paper feeding scanner for the present invention;
Fig. 2 C is an imageing sensor scan image and with image document record and the calcspar that transmits among Fig. 2 A and Fig. 2 B;
Fig. 3 A is the image pickup method flow chart of a preferred embodiment of the present invention;
The schematic diagram of Fig. 3 B for comparing according to scanning document time (tso) in scanning document time (ts) and the prior art in the image pickup method of Fig. 3 A and internal memory release image document time (td).
Embodiment
For purpose of the present invention, feature and advantage can be become apparent, below especially exemplified by a preferred embodiment, and conjunction with figs., be described in detail as follows.
In order to shorten the scanning stand-by period, to increase sweep speed, especially when carrying out the dual-side image scan function, emphasis of the present invention just is: increase at least one group of internal memory that can remember the two-sided data of file respectively in above-mentioned memory modules, so that when first group of internal memory discharges image document, simultaneously can scan next file, and the image document of next file is temporarily stored in second group of internal memory, image document at first group of internal memory has discharged then release of back, therefore, can effectively save sweep time.
With reference to figure 2A, shown that the present invention is applied in the structural representation that falt bed scanner adds automatic paper feeder.Image capturing device 200 is used for scanning n (n is a positive integer) and opens file 222 to be scanned, and each file 222 to be scanned has first data 222a (one side up) and second data 222b (one side down), and image capturing device 200 comprises base 210 and is positioned at ADF220 (is example with U type ADF) above the base 210.Base 210 comprises scanning platform 212, first imageing sensor 214, and circuit board 216, and wherein first imageing sensor 214 is used for first data 222a of each file 222 to be scanned of sensing.In addition, ADF220 is used for presenting file 222 to be scanned, and ADF220 has second imageing sensor 224, is used for second data 222b of each file 222 to be scanned of sensing.
When carrying out the duplex scanning action, file 222 to be scanned is sent into and is delivered on the scanning platform 212 by ADF220, scan its first data 222a and second data 222b simultaneously by first imageing sensor 214 and second imageing sensor 224, the image document that will scan gained is again delivered in the circuit board 216 temporary or send main frame 230 again to.
Fig. 2 B is for the present invention is applied in the structural representation of paper feeding scanner, and it is roughly the same with above-mentioned falt bed scanner to carry out the duplex scanning action, does not repeat them here.
Wherein, the first and second above-mentioned imageing sensors 214,224 can be with Charged Coupled Device (Charge CoupledDevice; CCD) capture image or contact-type image sensor (Contact Image Sensor; CIS).
With reference to figure 2C, shown imageing sensor scan image among Fig. 2 A and Fig. 2 B and with image document record and the calcspar that transmits.Above-mentioned circuit board 216 also comprises memory modules 240 and image processor 218.Characteristics of the present invention just are: many at least one group of scratch-pad memory of increase than prior art in memory modules 240, make memory modules 240 comprise q (q is a positive integer) group internal memory 241, and respectively organize internal memory 241 and have the first internal memory 241a and the second internal memory 241b again respectively, be used for respectively the first image document Ima and the second image document Imb (m is the positive integer smaller or equal to n) of temporary corresponding first data 222a and second data 222b, and image processor 218 can be accepted the control of main frame 230, is used for sending main frame 230 to after the first image document Ima that memory modules 240 is discharged and the second image document Imb are handled.The capacity of the above-mentioned first internal memory 241a that increases and the second internal memory 241b can store first data 222a and second pairing first and second image document Ima and Imb of data 222b at least respectively.
Next, promptly to open file 222 to be scanned be example to utilize q group internal memory to scan n in the present invention, and image pickup method of the present invention is elaborated.With reference to figure 3A, show to come the flow chart of a preferred embodiment of the present invention image pickup method.At first, step 302, a given m value, m is the positive integer smaller or equal to n, make that the m value is 1, then, step 304, judge that whether the m value is less than q, if the m value then makes k=m less than q,, then enter step 306 if the m value is not less than q and then makes k=(m mod q)+1, utilize first and second imageing sensors 214 and 224 while sensing m to open first data 222a and second data 222b of file 222 to be scanned, carry out the duplex scanning action.Come again, carry out step 308, be temporarily stored in the k group internal memory 241 the first image document Ima and the second image document Imb of corresponding first the data 222a of sensing gained and second data 222b and output.
It should be noted that above-mentioned first and second image document Ima that are temporarily stored in k group internal memory 241 and Imb can be simultaneously do the action of exporting simultaneously when the temporary dual-side image data of other group internal memory 241.That is to say, next, file 222 to be scanned is opened in scanning (m+1), and first and second image document I (m+1) a of sensing gained and I (m+1) b be temporarily stored in (k+1) group internal memory 241, the first and second image document Ima and Imb also output to image processor 218 by k group internal memory simultaneously.
Proceed step 310, judge that whether the m value is less than n, if the m value is less than n, then make m increase progressively 1 m=m+1 just, return above-mentioned steps 304, if m value is not less than n, treat that the first and second image document Ima that keep in the q group internal memory 241 and Imb discharge fully after, flow process finishes, and the capturing images action that this n opens file 222 to be scanned has been finished in expression.
With reference to figure 3B, the scanning document time (tso) that has shown scanning document time (ts) and prior art in the capturing images flow process of Fig. 3 A and internal memory 241 discharge the schematic diagram that the image document time (td) compares.As mentioned above, if to m (m=1, n) open file 222 and carry out duplex scanning, and pairing duplex scanning image document Ima and Imb be temporarily stored in k (k=1,, q) be Tm the sweep time in the internal memory 241, and k internal memory 241 discharges image document Ima and Imb successively gradually and is respectively release time to image processor 218 Tma and Tmb.Apparently, compared with prior art down, image pickup method of the present invention, because many at least one group of internal memories 241, but scan behind first file 222 to be scanned the 2nd of continuous sweep, open file 222 to be scanned with q, do not need above-mentioned scanning stand-by period Tw=T1a+T1b-T1 of the prior art, and q opens file 222 and has scanned the back and only need to wait for Tw2=T1a+T1b-(T1+ ... + Tq) time can be scanned (q+1) again and open file 222 to be scanned, scanning stand-by period Tw=T1a+T1b-T1 than prior art is also short, even imageing sensor does not need the stand-by period continuously whole document images once to be captured to finish, because above-mentioned scanning stand-by period ts shortens, make n open file 222 to be scanned after image sensing finishes, until opening the image document Ina and the Inb of file 222, corresponding n is discharged into fully between the image processor 218, also vacate time T r=T (n-q+1) a+T (n-q+1) b+ ... more than the existing Tw=T1a+T1b-T1 of+Tna+Tnb-Tn, when n value or q value heal when big, the time T r value of being saved can be bigger, the saved period of this section, can be used for other print job, or print the paper replacing and wait other trifling work, therefore, can effectively improve the speed and the efficient of scanning work.
In the above embodiment of the present invention, in the circuit board 216 of memory modules 240 designs in base 210, the first internal memory 241a of wherein q group internal memory 241 and the second internal memory 241b also can separate and design respectively in base 210 and ADF220, still can reach the purpose of above-mentioned saving scanning stand-by period, in addition, image capturing device 200 of the present invention can install ADF additional as above-mentioned falt bed scanner, it also can be a kind of paper feeding scanner (Sheet FeedScanner) with automatic paper feeder, and base and on cover and install first and second imageing sensors of stating 214 and 224, to carry out duplex scanning, even image capturing device of the present invention also can be to utilize platform-type (Flatbed) scanner that manually skips, so long as all can be used to reach the purpose that shortens the scanning stand-by period, do not break away from technical scope of the present invention than at least one group of internal memory of the existing increase of Duoing.
Therefore, the disclosed image capturing device of preferred embodiment of the present invention has following advantage: utilize at least two group internal memories to keep in the image document of at least two files to be scanned continuously, can shorten the existing time of before second file to be scanned of scanning, waiting for the image document of first file to be scanned of first group of internal memory release, so, behind intact all files to be scanned of sensing, and before the image document of all files to be scanned discharges fully from memory modules, can vacate the time longer than prior art, be used for other printing, change work such as paper, effectively improve the speed and the efficient of scanning work.
In sum, though the present invention is not to be used for limiting protection scope of the present invention with a preferred embodiment explanation as above; any those skilled in the art; without departing from the spirit and scope of the present invention, any change and modification all belong to protection scope of the present invention.Therefore protection scope of the present invention is when being as the criterion with the scope that claims were defined.
The reference numeral explanation
100,200: image capturing device
110,210: base
112,212: scanning platform
114,214: the first imageing sensors
116,216: circuit board
117,240: memory modules
117a, 241a: first internal memory
117b, 241b: second internal memory
118,218: image processor
120、220： ADF
122,222: file to be scanned
122a, 222a: first data
122b, 222b: second data
124,224: the second imageing sensors
130,230: main frame
241: internal memory
Claims (18)
1. the image capturing device that can do dual-side image scanning is used for scanning many files to be scanned, and each described these file to be scanned comprises one first data and one second data, it is characterized in that described image capturing device comprises:
One first imageing sensor is used for described first data of each described these file to be scanned of sensing and first image document of corresponding described first data of output;
One second imageing sensor is used for described second data of each described these file to be scanned of sensing and second image document of corresponding described second data of output; And
A plurality of first internal memories and a plurality of second internal memory are used for respectively temporary pairing described first image document of each described these file to be scanned and described second image document.
2. image capturing device as claimed in claim 1 is characterized in that, described first imageing sensor and described second imageing sensor are with Charged Coupled Device (Charge Coupled Device; CCD) capture image.
3. image capturing device as claimed in claim 1 is characterized in that, described first imageing sensor and described second imageing sensor are a contact-type image sensor (Contact Image Sensor; CIS).
4. image capturing device as claimed in claim 1 is characterized in that, is a paper feeding scanner.
5. image capturing device as claimed in claim 1 is characterized in that, is a falt bed scanner.
6. image capturing device as claimed in claim 5 is characterized in that, also comprise an automatic paper feeder (AutomaticDocument Feeder, ADF).
7. image capturing device as claimed in claim 6 is characterized in that, described second imageing sensor is positioned among the described automatic paper feeder.
8. image capturing device as claimed in claim 7 is characterized in that, described these first internal memories and described these second internal memories are contained among the described falt bed scanner.
9. image capturing device as claimed in claim 7 is characterized in that, described these first internal memories and described these second internal memories are contained in respectively among described falt bed scanner and the described automatic paper feeder.
10. image capturing device as claimed in claim 1, it is characterized in that the capacity of each described these first internal memory and each described these second internal memory enough stores described first data of each described these file to be scanned and described first image document and described second image document of described second data correspondence at least respectively.
11. image capturing device as claimed in claim 1, it is characterized in that, also comprise an image processor, connect described these first internal memories and described these second internal memories, be used for described these first image documents and described these second image documents are outputed to a main frame.
12. image pickup method, be used in an image capturing device, scanning n and open file to be scanned, each described these file to be scanned comprises one first data and one second data, described image capturing device comprises one first imageing sensor, one second imageing sensor and a memory modules, described first imageing sensor and described second imageing sensor are used for capturing respectively described first data and described second data of described these files to be scanned, described memory modules has q group internal memory, each described these group internal memory all has one first internal memory and one second internal memory, described first data of temporary described these files to be scanned and described second data and output respectively, wherein q and n are positive integer, it is characterized in that described method comprises:
Scan m and open file to be scanned, and opening in described first data of file to be scanned and described first internal memory that second data is temporarily stored in one group of internal memory in the described memory modules and described second internal memory described m and output, m is 1 for positive integer and the initial value smaller or equal to n; And
Treat in described these q group internal memories, at least exist and save as sky in first internal memory and second of one group of internal memory or fully with after described first data and described second data output, the m value is increased progressively 1, and repeat above-mentioned steps till finish described these n and open the capturing images of file to be scanned.
13. image pickup method as claimed in claim 12 is characterized in that, described image capturing device is a paper feeding scanner.
14. image pickup method as claimed in claim 12 is characterized in that, described image capturing device is a falt bed scanner.
15. image pickup method as claimed in claim 14 is characterized in that, described image capturing device also comprise an automatic paper feeder (Automatic Document Feeder, ADF).
16. image pickup method as claimed in claim 12, it is characterized in that the capacity of each described these first internal memory and each described these second internal memory at least enough stores described first data and corresponding described first image document and described second image document of described second data with each described these file to be scanned.
17. image pickup method, be used for that scanning n opens file to be scanned in the image capturing device that can carry out double-sided scanning function, each described these file to be scanned comprises one first data and one second data, described image capturing device comprises one first imageing sensor, one second imageing sensor and a memory modules, described memory modules has q group internal memory, each described these group internal memory all has one first internal memory and one second internal memory, described first data of temporary described these files to be scanned and described second data and output respectively, wherein q and n are positive integer, it is characterized in that described method comprises:
A. make that a m value is 1;
B. whether judge described m value less than q,,, then make k=(m mod q)+1 if described m value is not less than q if described m value less than q, then makes k=m;
C. described first data and described second data of utilizing the described m of described first imageing sensor and second imageing sensor while sensing to open file to be scanned;
D. one first image document Ima and the one second image document Imb with corresponding described first data of sensing gained and described second data is temporarily stored in the described k group internal memory and output; And
E. whether judge described m value less than n,, then m is increased progressively 1 and get back to described step b if described m value is less than n.
18. image pickup method as claimed in claim 17, it is characterized in that the capacity of each described these first internal memory and each described these second internal memory at least enough stores described first image document and described second image document of described first data and described second data correspondence of each described these file to be scanned.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310108498 CN1614985A (en) | 2003-11-07 | 2003-11-07 | Image picker and method |
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| CN 200310108498 CN1614985A (en) | 2003-11-07 | 2003-11-07 | Image picker and method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101986686A (en) * | 2010-12-06 | 2011-03-16 | 威海华菱光电有限公司 | Contact image sensor |
| CN102006390A (en) * | 2010-11-25 | 2011-04-06 | 威海华菱光电有限公司 | Image reading device |
| US8134756B2 (en) | 2007-03-14 | 2012-03-13 | Pfu Limited | Scanning apparatus |
| US8699097B2 (en) | 2007-04-13 | 2014-04-15 | Pfu Limited | Scanner device and image reading and display method |
| CN106357949A (en) * | 2016-08-26 | 2017-01-25 | 珠海赛纳打印科技股份有限公司 | Scanning device, image forming device and scanning method |
-
2003
- 2003-11-07 CN CN 200310108498 patent/CN1614985A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8134756B2 (en) | 2007-03-14 | 2012-03-13 | Pfu Limited | Scanning apparatus |
| US8699097B2 (en) | 2007-04-13 | 2014-04-15 | Pfu Limited | Scanner device and image reading and display method |
| CN102006390A (en) * | 2010-11-25 | 2011-04-06 | 威海华菱光电有限公司 | Image reading device |
| 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 |
| CN106357949A (en) * | 2016-08-26 | 2017-01-25 | 珠海赛纳打印科技股份有限公司 | Scanning device, image forming device and scanning method |
| CN106357949B (en) * | 2016-08-26 | 2019-08-06 | 珠海赛纳打印科技股份有限公司 | A kind of scanning means, image forming apparatus and scan method |
| US10477060B2 (en) | 2016-08-26 | 2019-11-12 | Zhuhai Pantum Electronics Co., Ltd. | Scanning device, image-forming apparatus, and scanning method |
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