CN100338934C - Dual-functional optical sensing element - Google Patents
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- CN100338934C CN100338934C CNB2005100042132A CN200510004213A CN100338934C CN 100338934 C CN100338934 C CN 100338934C CN B2005100042132 A CNB2005100042132 A CN B2005100042132A CN 200510004213 A CN200510004213 A CN 200510004213A CN 100338934 C CN100338934 C CN 100338934C
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Abstract
The present invention provides a dual-functional optical sensing element which is applied to a high-speed image scanning system. The present invention principally comprises an array-shaped optical sensing element, more than one trilinear optical sensing element, a sensing signal processing unit, more than one primary color signal processing unit, a plurality of temporary memories and a synchronous processing unit, wherein the array-shaped optical sensing element is used for detecting the position of scanning images, feeding back and controlling scanning localization and scanning velocity; the trilinear optical sensing element is used for processing image capture. The dual-functional optical sensing element of the present invention is used, which can speed up image scanning velocity.
Description
Technical field
The present invention is about a kind of dual-functional optical sensing element, and particularly it possesses signal controlling and image capture function simultaneously.
Background technology
Progress along with science and technology, the software and hardware technology of device of image scanning also constantly upgrades, present most device of image scanning can both be kept certain quality of scanning (promptly having enough resolution), early is enough to satisfy common people or even professional person's demand.Therefore, the microminiaturization of the lifting of the speed of image scan and image-scanning system will be the topmost development center of gravity of following device of image scanning place.
Generally when carrying out image scan, high power light source produces the forceful rays irradiation, and the literal or the image that scan with the illumination desire make it reach the effect of induction fully.And encoder again by detect the external image light source with a sensing signal, and this sensing signal enters specialized processing units after the analog/digital converter conversion; Specialized processing units carries out decipher, calculating with the signal that receives, and then the sensitive information that obtains is deposited in the block of memory.Again by the analog image light source of Photosensing Units charge capture external image, exporting with one group of analog signaling of being made up of R, G, B primary signal then, is that digital signal is exported to specialized processing units by analog/digital converter with received analog signal conversion then.Specialized processing units carries out the processing of digital signal, and the digital signal after the processing will be stored in the memory.By interface convertor last signal of video signal is exported in the processing terminal for follow-up other image processing operation use again opportune moment.Wherein, a stepper motor is in order to drive lamp source or Photosensing Units, so that Photosensing Units can progressively scan literal or the image that desire scans by the one scan line, to obtain a literal signal of video signal or an image signal.And stepper motor can position and the rotating speed adjustment according to sensitive information, to obtain a preferable sense conditions and a speed.
For promoting quality of scanning, in No. the 577226th, Taiwan patent, one signal charge coupling element (CCD) sensing apparatus with two sensing element groups is proposed, it comprises by a CCD shift registor of a plurality of CCD elements and a plurality of the 2nd CCD elements, has one first Photosensing Units group of a plurality of first Photosensing Units, and one second Photosensing Units group with a plurality of second Photosensing Units.In this, produce first and second signal charges respectively by the first and second same light signals of Photosensing Units group sensing, receive by a staggered CCD element and the 2nd CCD element again, to reach the purpose of high resolution scanning.
Yet under this processing pattern, can satisfy most of users with its quality of scanning of technology of present device of image scanning.Therefore, will be how can satisfy under most of users' the prerequisite at the quality of scanning of device of image scanning, further make improvements at existing image-scanning system, with the speed that promotes image scan or reach device of image scanning and be able to microminiaturization, will be the topmost development center of gravity of following device of image scanning place.
Summary of the invention
In view of above problem, main purpose of the present invention is to provide a kind of dual-functional optical sensing element, to be applied in the high speed image-scanning system, to solve existing problem of prior art or shortcoming.
Disclosed dual-functional optical sensing element is applied to can save the cost of single unit system in the high speed image-scanning system.
Disclosed dual-functional optical sensing element, being applied to can increase sweep speed in the high speed image-scanning system.
Therefore, for reaching above-mentioned purpose, disclosed dual-functional optical sensing element, be applied to a device of image scanning, to scan an image, comprising: a matrix type light sensing tuple, more than one trilinear light sensing tuple, a sensing signal processing unit, more than one primary signal processing unit, a plurality of buffer and a synchronous processing unit.
Matrix type light sensing tuple is arranged with matrix-style by a plurality of light sensing unit and is formed, in order to the position of detecting scan-image and the sense data of exporting the respective scanned image position; Each trilinear light sensing tuple is arranged with linear arrays by a plurality of light sensing unit and is formed, in order to detecting a sensing area of scan-image, and the image data in output respective scanned image sensing district; Sensing signal processing unit connection matrix type light sensing tuple, to handle sense data and to export corresponding sensing signal, wherein sensing signal is the bit coding; Each primary signal processing unit is connected to a trilinear light sensing tuple, to handle the image data of corresponding trilinear light sensing tuple output, and export the signal of video signal of corresponding image data, wherein signal of video signal comprises the tricolor signal of red, green, blue; Buffer corresponds respectively to sensing signal processing unit and the configuration of each primary signal processing unit, respectively the signal of video signal exported of the sensing signal of being exported in order to storage corresponding sense signals processing unit and each primary signal processing unit; At last, the synchronous processing unit that is connected with buffer receives sensing signal and the signal of video signal from buffer, and with sensing signal and signal of video signal back output synchronously.Wherein, device of image scanning is regulated and control foundation with sensing signal as the location of obtaining image data.
In this, the light sensing unit in the matrix type light sensing tuple arranges with the matrix-style of m * n and forms, and wherein m, n are the identical or different positive integer greater than 1.And, can pass through to increase the width of the light sensing unit in the matrix type light sensing tuple to increase the speed of the position of detecting scan-image.
Trilinear light sensing tuple has three linear light sensing element array, wherein corresponding each primary signal of each linear light sensing element array difference.
Wherein, matrix type light sensing tuple and trilinear light sensing tuple can be the light sensing tuple that is divided into a plurality of parts in a contact image sensor (CIS), charge coupled cell (CCD) or the metal-oxide semiconductor image sensor (CMOS).
According to principle of the present invention, disclosed dual-functional optical sensing element, possess signal controlling and image capture function simultaneously, but FEEDBACK CONTROL scanning location and sweep speed, parallel processing image capture function again, to accelerate the speed of image processing, therefore, disclosed bifunctional Photosensing Units has the advantage of accelerating image scan speed.
Detailed features of the present invention and advantage will be described in detail in execution mode, its content is enough to make any those skilled in the art to understand technology of the present invention and implements according to this, and any advantage related to the present invention and purpose can be understood from content, claim and accompanying drawing that this specification disclosed easily.
Description of drawings
Fig. 1 is the summary structure chart of explanation according to the dual-functional optical sensing element of one embodiment of the invention;
Fig. 2 is the summary structure chart that is illustrated in an embodiment of matrix type light sensing tuple among Fig. 1;
Fig. 3 is the schematic diagram that is illustrated in the application mode of the embodiment of matrix type light sensing tuple among Fig. 2;
Fig. 4 is the summary structure chart that is illustrated in an embodiment of trilinear light sensing tuple among Fig. 1;
Fig. 5 is the embodiment schematic diagram of the high speed image scan system of the bifunctional Photosensing Units of explanation application one embodiment of the invention; And
Fig. 6 is the summary structure chart of explanation bifunctional Photosensing Units according to another embodiment of the present invention.
Wherein, description of reference numerals is as follows:
100 dual-functional optical sensing elements, 110 matrix type light sensing tuples
First group of 120 trilinear light sensing tuples, 201～120N is to N group light sensing unit
130 sensing signal processing units, 140 primary signal processing units
1401～140N primary signal processing unit, 150 first buffers
151 second buffer 1511～151N, second buffer
160 synchronous processing unit, 170 optics chis
180 light sources, 190 set of lenses
210 analog/digital converters, 212 first analog/digital converters
214 second analog/digital converters, 220 specialized processing units
222 signal processing units, 224 image process units
230 memory set, 232 first memories
234 second memories, 240 image output interfaces
250 processing terminal IMAGE scan-images
DDs sense data DIs image data
SDs sensing signal SIs signal of video signal
G green primary color signal B blue primary signal
DSDs numeral sensing signal dSIs digital image signal
Digital image signal after digital sensing signal dSI ' s after dSD ' s handles handles
DIs_1～DIs_N image data
SIs_1～SIs_N signal of video signal
Embodiment
The present invention is a kind of dual-functional optical sensing element, be mainly used in as scanner, multifunctional paper feeding machine ... on device of image scanning, can make device of image scanning finish the scan-image processing and use for other processing terminal (as: personal computer) in mode more at a high speed.
About feature of the present invention and actual operation, now be described in detail as follows as most preferred embodiment in conjunction with the accompanying drawings.
Please refer to Fig. 1, embodiment for disclosed dual-functional optical sensing element includes: a matrix type light sensing unit (cell) group 110, and arrange with matrix-style by a plurality of light sensing unit and to form, in order to the position of detection scan-image, and export the sense data DDs that records; One trilinear light sensing tuple 120 is arranged with linear arrays by a plurality of light sensing unit and to be formed, in order to detecting the sensing area of scan-image IMAGE, and the image data DIs that records of output; One sensing signal processing unit 130 corresponds to 110 configurations of matrix type light sensing tuple, in order to handle sense data DDs, to export corresponding sensing signal SDs; One primary signal processing unit 140 corresponds to 120 configurations of trilinear light sensing tuple, in order to process image data DIs, to export corresponding signal of video signal SIs; Two buffers 150,151, correspond respectively to sensing signal processing unit 130 and 140 configurations of primary signal processing unit, in order to store sensing signal SDs and the signal of video signal SIs that corresponding sense signals processing unit 130 and primary signal processing unit 140 are exported; An and synchronous processing unit 160, join with buffer 150,151, in order to receiving sensing signal SDs and the signal of video signal SIs that buffer 150,151 is exported, and sensing signal SDs and signal of video signal SIs are exported to follow-up treatment system synchronously, to carry out subsequent treatment.Wherein, this sensing signal SDs is in order to as the location regulation and control foundation that obtains image data DIs, just according to sensing signal SDs and speed and location that gated sweep is moved, with the signal of video signal DIs of all sensing areas of obtaining respective scanned image IMAGE in regular turn.Wherein, sensing signal is a binary-coded signal, and signal of video signal DIs is signal R, G, the B that comprises Red Green Blue.
Wherein, matrix type light sensing tuple 110 arrangement modes form a matrix form by the Cell 11～Cell mn arrangement of m * n light sensing unit as shown in Figure 2, and wherein m, n are the identical or different positive integer greater than 1.This matrix type light sensing tuple is arranged in pairs or groups, and an optics chi implements.This optics chi 170 is mainly formed by a plurality of reflector spaces and the arrangement of a plurality of not reflector space.The induction region of optics chi 170 changes along with the scan-image position, and the reflector space on the induction region can reflect away the light that light source 180 exposes to.Reverberation earlier converges the back via a set of lenses 190 and is received by matrix type light sensing tuple 110, and different by the arrangement of reflector space and reflector space not, matrix type light sensing tuple can be encoded to determine corresponding scan-image position, as shown in Figure 3.Wherein, width that can be by widening the Cell 11～Cellmn of light sensing unit is to increase light-inletting quantity and then accelerated light exposure time.
Trilinear light sensing tuple 120 arrangement modes as shown in Figure 4, the light sensing unit that it comprised is three linear light sensing element array.And three the light sensing tuple of wire is distinguished a corresponding primary signal (promptly red, green or blue primary signal R, G or B).
For instance, when a desire scans a file, a predetermined scanning element can be set in scanning means inside, again according to the scanning position of corresponding sense signal with regulation and control sweep speed and location, and progressively scan the file of desire scanning, thereby obtain the signal of video signal of one scan, promptly export a signal of video signal with predetermined pixel.
In order fully to prove the exploitativeness of dual-functional optical sensing element of the present invention, below will illustrate that by an embodiment the present invention operates situation, sees also Fig. 5 again:
Following default prerequisite is arranged among this embodiment, comprising: have in an optics chi of the position of respective scanned image, the dual-functional optical sensing element 100 and have in two groups of light sensing units (being matrix type light sensing tuple 110 and trilinear light sensing tuple 120), the analog/digital converter 210 that two analog/digital converters (i.e. first analog/digital converter 212 and second analog/digital converter 214) are that the transducer control unit is controlled, have two memories (first memory 232 and second memory 234) to be memory control unit in the memory set 230 to control.
At first, will be by the reflection ray of 110 receptions of the matrix type light sensing tuple in the bifunctional Photosensing Units 100 from the induction region of corresponding image position on the optics chi, and while trilinear light sensing tuple 120 is caught the pixel of a sensing area of scan-images, therefore the reflection ray of corresponding image position is handled back output one analog sensing signal SDs via matrix type light sensing tuple 110, and the pixel that captures is handled back output one analog image signal SIs via trilinear light sensing tuple 120.
Under the control of transducer control unit, the analog sensing signal SDs that matrix type light sensing tuple 110 is exported will be received by first analog/digital converter 212, and the analog image signal SIs that trilinear light sensing tuple 120 is exported will be received by second analog/digital converter 214, and in the mode of parallel processing with all analog signal SDs, SIs is converted to digital signal dSDs, export specialized processing units 220 behind the dSIs to (by the digital sensing signal dSDs of first analog/digital converter, 212 outputs, and by second analog/digital converter, 214 output digital image signal dSIs, but also can take non-mode one to one to carry out) according to the setting of transducer control unit.
Digital signal enters into after the specialized processing units 220, mainly be responsible for carrying out the signal processing of digital signal and the program of image processing by signal processing unit 222 and 224 two parts of image process unit, after disposing, digital sensing signal dSD ' s after being responsible for controlling and will handling by memory control unit again is stored to first memory 232, and the digital image signal dSI ' s after will handling is stored in the second memory 234.
Specialized processing units 220 takes out corresponding reflection ray in first memory 231 digital signal is learning the position of scan-image, and then the speed of regulation and control scan-image and scanning location, detects next sensing area of scan-image again.At last, specialized processing units 220 is according to the digital signal in the digital signal taking-up second memory 234 of corresponding reflection ray, and carry out the reorganization ordering operation of complete output image signal, at last with whole signal of video signal to put in order normally, export to processing terminal 250 by the connection of image output interface 240, finish the operation of whole high speed image scan.
In addition, with can by a plurality of trilinear light sensing tuples 120 (as, first group of light sensing unit 1201, second group of light sensing unit 1202 ... the N group light sensing 120N of unit), a plurality of primary signal processing unit 140 (as, primary signal processing unit 1401, primary signal processing unit 1402, primary signal processing unit 140N), and a plurality of second buffers 151 (as, second buffer 1511, second buffer 1512 ... the second buffer 151N); Obtain a plurality of signal of video signal SIs_1～SIs_N and be stored in respectively among corresponding second buffer, 2511～251N in the mode of a plurality of sensing areas of parallel detection, parallel processing, via synchronous processing unit 160 signal of video signal SIs_1～SIs_N is exported the back synchronously again, as shown in Figure 6.Wherein, also speed and the location of coming gated sweep to move by sensing signal SDs obtaining signal of video signal SIs_1～SIs_N, and then obtains the signal of video signal of respective scanned image IMAGE according to sensing signal SDs.Just, the scanning means inner setting is predeterminable with scanning document (promptly, scan-image) is distinguished into a plurality of sensing areas, when this scanning document of scanning means P-SCAN, can scan each sensing area respectively and produce corresponding image data by the set a plurality of trilinear light sensing tuples of scanning means.
Wherein, matrix type light sensing tuple and trilinear light sensing tuple can be arranged by different way by same a plurality of light sensing unit and be formed, and this light sensing unit can be light sensing unit, the light sensing unit in charge coupled cell (CCD) in a contact image sensor (CIS), or is the light sensing unit in metal-oxide semiconductor image sensor (CMOS).
Disclosed bifunctional Photosensing Units, possess signal controlling and image capture function simultaneously, can detect the image scan position with FEEDBACK CONTROL scanning location and sweep speed, parallel processing image capture function again, to accelerate the speed of image processing, therefore, disclosed bifunctional Photosensing Units has the advantage of accelerating image scan speed.
Though the present invention discloses as above with previous embodiment, so it is not in order to limit the present invention.Without departing from the spirit and scope of the present invention, change of doing and retouching all belong to scope of patent protection of the present invention.Please refer to appended claim about the protection range that the present invention defined.
Claims (7)
1. a dual-functional optical sensing element is applied to a device of image scanning, to scan an image, it is characterized in that comprising:
One matrix type light sensing tuple is arranged with matrix-style by a plurality of light sensing unit and to be formed, in order to detecting the position of this scan-image, and the sense data that output mutually should the scan-image position;
More than one trilinear light sensing tuple, each this trilinear light sensing tuple are arranged with linear arrays by a plurality of light sensing unit and are formed, in order to detecting a sensing area of this scan-image, and the image data that output mutually should the scan-image sensing area;
One sensing signal processing unit connects this matrix type light sensing tuple, in order to handling this sense data of this matrix type light sensing tuple output, and exports corresponding sensing signal, and wherein this sensing signal is the bit coding;
More than one primary signal processing unit, be connected to each this trilinear light sensing tuple respectively, in order to handle this image data of corresponding this trilinear light sensing tuple output, and export the signal of video signal of corresponding this image data, wherein this signal of video signal comprises the tricolor signal of red, green, blue;
A plurality of buffers, correspond respectively to this sensing signal processing unit and each this primary signal processing unit configuration, respectively in order to store the signal of video signal that sensing signal that this corresponding sensing signal processing unit exported and each this primary signal processing unit are exported; And
One synchronous processing unit is connected with these a plurality of buffers, in order to receiving this sensing signal and this signal of video signal from these a plurality of buffers, and with this sensing signal and the back output synchronously of this signal of video signal; Wherein, this device of image scanning is regulated and control foundation with this sensing signal as the location of obtaining this image data.
2. dual-functional optical sensing element as claimed in claim 1, wherein this light sensing unit in this matrix type light sensing tuple arranges with the matrix-style of m * n and forms, and wherein m, n are the identical or different positive integer greater than 1.
3. dual-functional optical sensing element as claimed in claim 2 wherein can be by increasing the width of this light sensing unit in this matrix type light sensing tuple, to increase the speed of the position of detecting this scan-image.
4. dual-functional optical sensing element as claimed in claim 1, wherein this light sensing unit in this trilinear light sensing tuple is three linear light sensing element array, and corresponding each this primary signal of each this linear light sensing element array difference.
5. dual-functional optical sensing element as claimed in claim 1, wherein this matrix type light sensing tuple and this trilinear light sensing tuple are the light sensing tuple that is divided into a plurality of parts in the contact image sensor.
6. dual-functional optical sensing element as claimed in claim 1, wherein this matrix type light sensing tuple and this trilinear light sensing tuple are the light sensing tuple that is divided into a plurality of parts in the charge coupled cell.
7. dual-functional optical sensing element as claimed in claim 1, wherein this matrix type light sensing tuple and this trilinear light sensing tuple are the light sensing tuple that is divided into a plurality of parts in the metal-oxide semiconductor image sensor.
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| CN102325233A (en) * | 2011-10-10 | 2012-01-18 | 朱杰 | Contact image sensor with a plurality of scanning arrays |
| CN104113715B (en) * | 2013-04-22 | 2017-03-01 | 原相科技股份有限公司 | Operating method thereof and image sensor |
| TWI568237B (en) * | 2015-07-29 | 2017-01-21 | 東友科技股份有限公司 | Image capture method and image capture and synthesis method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1378388A (en) * | 2001-03-27 | 2002-11-06 | 皇家菲利浦电子有限公司 | Camera and method for correcting images of said camera |
| US6707955B1 (en) * | 1999-06-30 | 2004-03-16 | Canon Kabushiki Kaisha | Image sensing device, image processing apparatus and method, and memory medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6707955B1 (en) * | 1999-06-30 | 2004-03-16 | Canon Kabushiki Kaisha | Image sensing device, image processing apparatus and method, and memory medium |
| CN1378388A (en) * | 2001-03-27 | 2002-11-06 | 皇家菲利浦电子有限公司 | Camera and method for correcting images of said camera |
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