CN101087351A - Touch image sensor and image scanning method - Google Patents
Touch image sensor and image scanning method Download PDFInfo
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- CN101087351A CN101087351A CN 200610091730 CN200610091730A CN101087351A CN 101087351 A CN101087351 A CN 101087351A CN 200610091730 CN200610091730 CN 200610091730 CN 200610091730 A CN200610091730 A CN 200610091730A CN 101087351 A CN101087351 A CN 101087351A
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Abstract
A kind of contact image sensor and method of scanning is applied in scanning device; the contact image sensor includes the first light sensing element and at least one light sensing element, the light sensing element possesses several light sensing units which are arranged along the first direction to sense light beam and generate several first image units, then, at least one sensing element is set in the first sensing element, and it possesses several light sensing units which are arranged along the first direction to sense light beam and generate several image units; thereinto, the position of any light sensing unit in the first light sensing element is superposed with position of light sensing unit of the other light sensing element in the second direction, and the first direction and the second direction are vertical with each other. So, the invention can increase the resolution of course when contact image sensor precedes integral optic scanning.
Description
Technical field
The present invention relates to the method for a kind of imageing sensor and image scanning thereof, the method for particularly a kind of contact-type image sensor and image scanning thereof.
Background technology
General scanning means normally is used for and will has the documentation or the object of literal, photograph, figure and artistic illustration, give being stored in the computer after scan conversion becomes the digital and electronic file, thereby can further carry out digital processing work such as digitized demonstration, edit-modify, storage and output to this umber word e-file for computer.
As for employed main optical sensor in the scanning means, generally be divided into two kinds: a kind of be adopt charge coupled cell (charge couple device, CCD), another kind then adopt contact-type image sensor (contact image sensor, CIS).With regard to the scanning means that uses CCD, comparatively quick because of the sweep speed of CCD, it still is present more common way, yet its shortcoming is that the comparatively complicated optical system that needs to arrange in pairs or groups is so the overall volume of scanning means can't be dwindled.
In addition, with regard to the scanning means that uses CIS, because of its characteristics can all be incorporated within the CIS with such as elements such as scanning light source, lens, so overall structure, principle and light path are all comparatively simple, will make so that the overall volume of scanning means can design thinlyyer, littler.Because the design feature on the aforementioned structure conforms to the developing direction of following electronic product,, more and more popular trend will be had so adopt the way of CIS as the optical sensor of scanning means.The follow-up technology contents that will discuss of the present invention will be main discussion object with the scanning means that uses CIS just.
See also the perspective view of known CIS scanning means 10 shown in Figure 1.In Fig. 1, this CIS scanning means 10 has casing 11, is arranged on the transparent platform 12 of casing 11 end faces, and is arranged on the contact-type image sensor 13 of casing 11 inside.In addition, file 14 to be scanned is placed on the transparent platform 12.
Operating principle as for known CIS scanning means 10, now more respectively with the scanning work conceptual schematic view shown in Fig. 2 (a), 2 (b) and the conceptual schematic view that the file area is divided into n long rectangular scanning zone (and cooperates consult shown in Figure 1), and detailed description as described later.
That is to say, also comprise control element 15, driving element 16 and memory element 17 in the inside of known CIS scanning means 10, and this contact-type image sensor 13 is made up of jointly 133 of Photosensing Units that have the light source producing component 131 that can produce red, green and blue-light source L11, produce corresponding image pixel with red, green and lens 132 that blu-ray reflection light source L12 focuses on, with red in order to respond to, green and blu-ray reflection light source L12.
Particularly, when scanning, file 14 is placed on the transparent platform 12,131 of light source producing components in the contact-type image sensor 13 carry out optical scanner first time stroke to first the long rectangular scanning zone Z1 (shown in Fig. 2 (b)) on the file 14, afterwards again by control element 15 control driving component 16, carry out optical scanner process next time to drive second the long rectangular scanning zone Z2 that advances on 13 pairs of files 14 of contact-type image sensor, and in this way file 14 is from first to last carried out the optical scanner process n time, thereby (that is, the Z1 that indicates among Fig. 2～Zn) all finishes scanning work with the n that distinguished in the file 14 long rectangular scanning zone.Certainly, scanning result behind contact-type image sensor 13 scanning documents 14, exported and be stored in the memory element 17, and control element 15 can will leave the scanning result in the memory element 17 in, further export in the external data processing device 20 (for example, the personal computer that is electrically connected with known CIS scanning means 10).
Moreover the relevant contact-type image sensor 13 that how to utilize is finished each time optical scanner process, then please cooperate structure and the operation principle schematic diagram of consulting Photosensing Units shown in Figure 3 133.That is to say, when carrying out arbitrary optical scanner process, light source producing component 131 in the control element 15 may command contact-type image sensors 13, make it earlier (for example to the arbitrary long rectangular scanning zone of file 14, rectangular scanning shown in Fig. 2 (b) zone Z2) the long rectangle red light source L11 of projection, the reflex by file 14 forms reflection to red light light source L12 more afterwards.At this moment, reflection to red light light source L12 will be directly evenly be projected to 13600 light sensing unit S1～S13600 places of Photosensing Units 133 through the focusing work of lens 132, light sensing unit S1～S13600 also will distinguish to produce in view of the above and export 13600 ruddiness sub-pixels (sub-pixel) R1～R13600.
By that analogy, light source producing component 131 in the control element 15 may command contact-type image sensors 13, make it more respectively to same long rectangular scanning zone Z2 projection one long rectangle green light source/blue-light source L11, form green/blue reflection source L12 by reflex more afterwards, thereby make light sensing unit S1～S13600 produce 13600 green glow sub-pixel G1～G13600 of output and blue photons pixel B 1～B13600 respectively in view of the above.
Certainly, these ruddiness sub-pixels R1～R13600, green glow sub-pixel G1～G13600 and blue photons pixel B 1～B13600 all can be stored in the memory element 17 earlier, therefore control element 15 can be respectively synthesizes the 1st pixel (pixel) P1 in addition with wherein sub-pixel R1, B1 and G1, and the rest may be inferred synthesizes the 2nd to the 13600th pixel P2～P13600, produces 13600 pixels altogether.At last, control element 15 all synthesizes image column (row) with the 1st to the 13600th pixel P1～P13600 again and is stored in the memory element 17, thus, promptly finishes once complete optical scanner process.Certainly, after utilizing 13 pairs of files 14 of contact-type image sensor from first to last to finish n optical scanner process, can produce n row image column in view of the above, control element 15 can further be synthesized picture frame (frame) with these n row image column again, and is exported to external data processing device 20 places.
The shortcoming of well known practice is, because of the length of Photosensing Units 133 need cooperate the width of scanning document 14 usually, so the length of Photosensing Units 133 also has certain restriction.The resolution of Photosensing Units 133 (for example can be improved if wish, improved three times), known way makes the number that is located at the light sensing unit in the above-mentioned Photosensing Units 133 with regular length increase by three times often, that is to say, the Photosensing Units 133 of 13600 light sensing unit S1～S13600 will originally be had, under the constant situation of its length, increase and become Photosensing Units 133, thereby reach the purpose that improves three resolutions with 40800 light sensing units.Thus, obviously can improve the manufacture difficulty of Photosensing Units 133, and increase manufacturing cost.
Summary of the invention
Main purpose of the present invention promptly is desirable to provide a kind of contact image sensing device that produces multiple resolution.
The present invention relates to a kind of contact-type image sensor, it is applied in the scanning means, contact-type image sensor comprises first Photosensing Units and reaches another Photosensing Units at least, and first Photosensing Units has a plurality of light sensing units that are close to arrangement along first direction in regular turn, and a plurality of light sensing unit also produces a plurality of first elementary areas in view of the above in order to light sensing.Moreover another Photosensing Units is adjacent at least is arranged at first Photosensing Units, and has a plurality of at least light sensing units that are close to arrangement along first direction in regular turn, and a plurality of light sensing unit is in order to sensing another light and produce a plurality of elementary areas in view of the above at least.Wherein, any light sensing unit in first Photosensing Units the position is set, with respect to the position that is provided with of this light sensing unit that is adjacent in another Photosensing Units at least, overlap at least in second direction, and first direction is vertical mutually with second direction.
By above-mentioned invention conception, wherein this at least any light sensing unit in another Photosensing Units the position is set, with respect to the position that is provided with of the light sensing unit that is adjacent in this first Photosensing Units, be 1/2nd overlapping mutually in second direction.
By above-mentioned invention conception, wherein another Photosensing Units comprises second and third Photosensing Units at least, and both arrangement positions are with respect to this Photosensing Units, by near to being second and third Photosensing Units far in regular turn.
By above-mentioned invention conception, wherein any light sensing unit in this second Photosensing Units the position is set, with respect to the position that is provided with of the light sensing unit that is adjacent in the 3rd Photosensing Units, overlap at least in this second direction.
By above-mentioned invention conception, wherein any light sensing unit in first Photosensing Units is provided with the position, the position that is provided with respect to any light sensing unit that is adjacent in second Photosensing Units, in second direction overlapped 1/3rd, moreover, any light sensing unit in second Photosensing Units the position is set, with respect to the position that is provided with of any light sensing unit that is adjacent in the 3rd Photosensing Units, also be 1/3rd overlapping mutually in second direction.
By above-mentioned invention conception, wherein this first to the 3rd Photosensing Units is respectively ruddiness sensing element, green glow sensing element and blue light sensing element.
By above-mentioned invention conception, wherein any light sensing unit in this first to the 3rd Photosensing Units has effective sensing region respectively.
By above-mentioned invention conception, wherein any the effective sensing region in this first Photosensing Units is provided with the be provided with position of position with respect to the effective sensing region that is adjacent in this second Photosensing Units, interlaced in this second direction, and any the effective sensing region in this second Photosensing Units the position is set, with respect to the position that is provided with of the effective sensing region that is adjacent in the 3rd Photosensing Units, interlaced in this second direction.
By above-mentioned invention conception, wherein any light sensing unit in this first to the 3rd Photosensing Units also has invalid sensing region respectively, and the subregion that this invalid sensing region is to use the shielding means to cover this any light sensing unit forms.
Another better embodiment of the present invention, a kind of contact-type image sensor is provided, be applied to scanning means, comprise first Photosensing Units and reach another Photosensing Units at least, first Photosensing Units has a plurality of effective sensing region of arranging in regular turn along first direction, and a plurality of effective sensing region produces a plurality of elementary areas in view of the above in order to light sensing.Moreover, at least adjacent first Photosensing Units that is arranged at of another Photosensing Units, and have a plurality of at least effective sensing regions of arranging in regular turn along this first direction, and a plurality of effective sensing region is in order to sensing another light and produce a plurality of at least elementary areas in view of the above at least.Wherein, the arbitrary effective sensing region in first Photosensing Units the position is set, interlaced with respect to the position that is provided with that is adjacent sensing region in another Photosensing Units at least, and first direction is vertical mutually with second direction in second direction.
By above-mentioned invention conception, wherein another Photosensing Units comprises second and third Photosensing Units that all has a plurality of light sensing units at least, and both arrangement positions with respect to this first Photosensing Units by near to being second and third Photosensing Units far in regular turn, in addition, any effective sensing region in second Photosensing Units the position is set, with respect to the position that is provided with of the effective sensing region that is adjacent in the 3rd Photosensing Units, interlaced in second direction.
By above-mentioned invention conception, wherein this first to the 3rd Photosensing Units also has a plurality of light sensing units respectively, and each a plurality of effective sensing region in this first to the 3rd Photosensing Units are respectively formed on a plurality of light sensing units in this first to the 3rd Photosensing Units.
By above-mentioned invention conception, wherein a plurality of light sensing units in this first to the 3rd Photosensing Units also have a plurality of invalid sensing regions respectively, and any this invalid sensing region is all by the subregion of using the shielding means to cover this light sensing unit and is formed.
By above-mentioned invention conception, wherein any light sensing unit in this first Photosensing Units is provided with the position, the position that is provided with respect to the light sensing unit that is adjacent in this second Photosensing Units, be 1/3rd overlapping mutually in second direction, and any light sensing unit in this second Photosensing Units is provided with the position, with respect to the position that is provided with of the light sensing unit that is adjacent in the 3rd Photosensing Units, also be 1/3rd overlapping mutually in second direction.
The present invention also provides a kind of method of image scanning, be applied in the contact-type image sensor to produce picture frame, this contact-type image sensor comprises first to the 3rd Photosensing Units, and has a plurality of light sensing units of arranging in regular turn along first direction respectively, and this method comprises:
(A) produce first to three primary colors light, and have this first to the 3rd Photosensing Units of a plurality of light sensing units respectively, respectively in order to according to this first to three primary colors light, and produce a plurality of elementary areas respectively;
(B) import each elementary area that first light sensing unit produced in this first to the 3rd Photosensing Units respectively, with synthetic first pixel;
(C) import second elementary area that light sensing unit produced in this first Photosensing Units respectively, and each elementary area that first light sensing unit produced in this second and third Photosensing Units, with synthetic second pixel;
(D) import each second elementary area that light sensing unit produced in this first and second Photosensing Units respectively, and the elementary area that first light sensing unit produced in the 3rd Photosensing Units, with synthetic the 3rd pixel;
(E) import each second elementary area that light sensing unit produced in this first to the 3rd Photosensing Units respectively, with synthetic the 4th pixel;
(F) import the 3rd elementary area that light sensing unit produced in this first Photosensing Units respectively, and each second elementary area that light sensing unit produced in this second and third Photosensing Units, with synthetic the 5th pixel; And
(G) import each the 3rd elementary area that light sensing unit produced in this first and second Photosensing Units respectively, and second elementary area that light sensing unit produced in the 3rd Photosensing Units, with synthetic the 6th pixel;
(H) according to the mode of above-mentioned composition diagram picture, till synthetic last pixel; And
(I) input three times of a plurality of pixels that above-mentioned steps produced are with any image column in synthetic this picture frame.
Method according to described scan image, wherein any light sensing unit in this first Photosensing Units is provided with the position, the position that is provided with respect to the light sensing unit that is adjacent in this second Photosensing Units, be 1/3rd overlapping in second direction, and any light sensing unit in the secondth sensing element is provided with the position, the position that is provided with respect to the light sensing unit that is adjacent in the 3rd Photosensing Units, also be 1/3rd overlapping in this second direction, and this first direction is vertical mutually with this second direction.
According to the method for described scan image, wherein any light sensing unit in this first to the 3rd Photosensing Units has effective sensing region respectively.
Method according to described scan image, wherein any the effective sensing region in this first Photosensing Units is provided with the position, the position that is provided with respect to the effective sensing region that is adjacent in this second Photosensing Units, interlaced in this second direction, and any the effective sensing region in this second Photosensing Units the position is set, with respect to the position that is provided with of the effective sensing region that is adjacent in the 3rd Photosensing Units, also interlaced in this second direction.
Method according to described scan image, wherein any light sensing unit in this first to the 3rd Photosensing Units also has invalid sensing region respectively, and this invalid sensing region subregion of using the shielding means to cover this any light sensing unit of serving as reasons forms.
According to the method for described scan image, wherein this first primitive color light, this second primitive color light and this primaries are respectively ruddiness, green glow and blue light.
In sum, under the prerequisite that does not increase substantially manufacturing cost, the contact-type image sensor that is disclosed among the present invention can utilize known Photosensing Units with light sensing unit, and take the light sensing unit of three Photosensing Units/effectively arrange with interlace mode the position that is provided with of sensing region, thereby follow-up when synthesizing the image synthetic operation of complete image pixel, make the sub-pixel that each light sensing unit/effective sensing region is produced to be repeated to take a sample synthetic, thus, after contact-type image sensor carries out complete optical scanner process, can reach the purpose of the resolution that improves scanning easily.
Description of drawings
Fig. 1 is the perspective view of known CIS scanning means.
Fig. 2 (a) is the scanning work principle schematic of known scanning means.
Fig. 2 (b) is for being divided into the file area conceptual schematic view in n long rectangular scanning zone.
Fig. 3 is the structure and the operation principle schematic diagram of Photosensing Units 133.
Fig. 4 is the perspective view with scanning means of CIS of the present invention.
Fig. 5 is the scanning work principle schematic with scanning means of CIS of the present invention.
Fig. 6 is the concrete structure and enforcement conceptual schematic view of first embodiment of Photosensing Units group among Fig. 5.
Fig. 7 (a) and 7 (b) are for utilizing the schematic flow sheet that first embodiment of Photosensing Units group carries out image scanning among Fig. 5.
Fig. 8 is the concrete structure and enforcement conceptual schematic view of second embodiment of sensing element group among Fig. 5.
Fig. 9 is the concrete structure and enforcement conceptual schematic view of the 3rd embodiment of sensing element group among Fig. 5.
Wherein, description of reference numerals is as follows:
10 scanning means, 11 casings
12 transparent platforms, 13 contact-type image sensors
14 file 15 control elements to be scanned
16 driving elements, 17 memory elements
131 light source producing components, 132 lens
133 Photosensing Units
The long rectangle of L11 is red/green/blue-light source
L12 is red/green/blu-ray reflection light source
20 external data processing devices
The long rectangular scanning of Z1～Zn zone
30 scanning means, 31 casings
32 transparent platforms, 33 contact-type image sensors
331 light source producing components, 332 set of lenses
333 Photosensing Units groups
3331～3,333 first to the 3rd Photosensing Units
The edge of 3331a～3333a first to the 3rd Photosensing Units
35 control elements, 36 driving elements
37 memory elements
The long rectangle of L31 is red/green/blue-light source
L32 is red/green/blu-ray reflection light source
40 external data processing devices
The invalid sensing region of the effective sensing region M1 of N1
D1～D4 spacing
Embodiment
Enumerate three kinds of preferred embodiments below with explanation the present invention, yet those skilled in the art knows that all these only are usefulness for example, and be not in order to the restriction invention.
At first, see also Fig. 4 and Fig. 5, it is respectively the perspective view and the scanning work conceptual schematic view of CIS scanning means 30 of the present invention.CIS scanning means 30 has casing 31, is arranged on the transparent platform 32 of casing 31 end faces, and is arranged on the contact-type image sensor 33 of casing 31 inside, and in addition, file 14 to be scanned is seated on the transparent platform 32.In addition, also comprise control element 35, driving element 36 and memory element 37 in the inside of CIS scanning means 30, wherein this contact-type image sensor 33 is made of jointly 333 of Photosensing Units groups that have the light source producing component 331 that can produce red, green and blue-light source L31, produce corresponding image pixel with the set of lenses 332 of red, green and blu-ray reflection light source L32 refraction, with red in order to respond to, green and blu-ray reflection light source L32.
Moreover the relevant contact-type image sensor 33 that how to utilize is finished each time optical scanner process, then sees also Fig. 6, and it be the concrete structure and enforcement conceptual schematic view of first embodiment of Photosensing Units group 333 among Fig. 5.Wherein, the main difference of the present invention and well known practice be in, Photosensing Units group 333 has three parallel first to the 3rd Photosensing Units 3331～3333 side by side, and first to the 3rd Photosensing Units 3331～3333 has 13600 light sensing unit SR11～SR113600, SG11～SG113600, the SB11～SB113600 that arranges with linear fashion (promptly along the x direction) next-door neighbour respectively.Preferable way, the identical length of any two light sensing units in above-mentioned these light sensing units are together.
In addition, the edge 3332a of the edge 3331a of first Photosensing Units 3331 and second Photosensing Units 3332 is D1 in the spacing of x direction; Moreover the edge 3333a of the edge 3332a of second Photosensing Units 3332 and the 3rd Photosensing Units 3333 then is D2 in the spacing of x direction.A kind of preferable way is that wherein the size of space D 1 and space D 2 is 1/2nd or 1/3rd of arbitrary light sensing unit length all simultaneously.
When carrying out arbitrary optical scanner process, light source producing component 331 in the control element 35 may command contact-type image sensors 33, make it earlier (for example to the arbitrary long rectangular scanning zone of file 14, rectangular scanning shown in Fig. 2 (b) zone Z1) the long rectangle red light source L31 of projection, the reflex by file 34 forms reflection to red light light source L32 more afterwards.At this moment, reflection to red light light source L32 will be directly evenly be projected to first to the 3rd Photosensing Units 3331～3333 of Photosensing Units group 333 through the refraction work of set of lenses 332.Use the way of three Photosensing Units simultaneously according to the present invention, control module 35 will only be controlled 13600 light sensing unit SR11～SR113600 of first Photosensing Units 3331 this moment, to produce output 13600 ruddiness sub-pixels (sub-pixel) R11～R113600 according to above-mentioned red-light source L32 respectively.Certainly, sensing cell SG11～SG113600, the SB11～SB113600 in second and third Photosensing Units 3332,3333 is in the state of forbidden energy at this moment.
In like manner, control element 35 may command light source producing components 331 make it respectively again to same long rectangular scanning zone Z2 projection long rectangle green light source/blue-light source L31, form green/blue reflection source L32 by reflex more afterwards.Certainly, control module 35 also will be taken turns 13600 light sensing unit SG11～SG113600, SB11～SB113600 of current control second/the 3rd Photosensing Units 3332/3333, to produce 13600 green glow sub-pixel G11～G113600 of output and blue photons pixel B 11～B113600 respectively respectively according to green/blue light source L32.Certainly, these ruddiness sub-pixels R11～R113600, green glow sub-pixel G11～G113600 and blue photons pixel B 11～B113600 all can be stored to earlier in the memory element 37.
Use the way of three Photosensing Units simultaneously according to the present invention, relevant controlling element 35 synthesizes the mode of a complete pixel with sub-pixel, also will be different with well known practice.Particularly, control element 35 synthesizes the 1st pixel (pixel) P11 with sub-pixel R11, B11 and G11 earlier, again R12, B11 and G11 are synthesized the 2nd pixel P12, then R2, B2 and G1 are synthesized the 3rd pixel P13, again R12, B12 and G12 are synthesized the 4th pixel P14 in addition at last.Synthetic order according to above-mentioned synthetic complete pixel is analogized, until R113600, B113599 and G113599 are synthesized the 40798th pixel P140798, R113600, B113600 and G113599 are synthesized the 40799th pixel P140799, and R113600, B113600 and G113600 are synthesized the 40800th pixel P140800.Control element 35 can all synthesize image column (row) with the 1st to the 40800th pixel P11～P140800 more at last and be stored in the memory element 37, promptly finishes once complete optical scanner process.Certainly, after utilizing 33 pairs of files 34 of contact-type image sensor from first to last to finish n optical scanner process, can produce n row image column in view of the above, control element 35 can further be synthesized picture frame (frame) with these n row image column again, and is exported to external data processing device 40 places.
In brief, with first embodiment shown in Figure 6, because first to the 3rd Photosensing Units 3331～3333 of Photosensing Units group 333 is taked staggered mode, and make each light sensing unit of winning to the 3rd Photosensing Units 3331～3333 be 1/2nd or 1/3rd overlapping in the y direction, and follow-up when carrying out the synthetic work of complete pixel, the sub-pixel that each light sensing unit produced can be repeated sampling synthetic three times, therefore, after utilizing contact-type image sensor 33 among Fig. 5 to carry out the optical scanner process, can produce 40800 pixels.Thus, obviously can make resolution bring up to three times purpose easily.
Further with the synthetic order of above-mentioned synthetic complete pixel, be organized into the schematic flow sheet that first embodiment of Photosensing Units group 333 carries out image scanning among Fig. 5 of the present invention that utilizes shown in Fig. 7 (a) and 7 (b) now.Wherein, this method comprises the following step:
Step 100: according to light source producing component 331 red, the green and blue-light source that produces respectively, so that first Photosensing Units 3331 produces 13600 ruddiness sub-pixel R11～R113600 according to red light source, make second Photosensing Units 3332 produce 13600 green glow sub-pixel G11～G113600, and make the 3rd Photosensing Units 3333 produce 13600 blue photons pixel B 11～B113600 according to blue-light source according to green light source;
Step 110: import the first ruddiness sub-pixel R11, the first green glow sub-pixel G11 and the first blue photons pixel B 11 respectively with synthetic the 1st pixel P11;
Step 120: import the second ruddiness sub-pixel R12, the first green glow sub-pixel G11 and the first blue photons pixel B 11 respectively with synthetic the 2nd pixel P12;
Step 130: import the second ruddiness sub-pixel R12, the second green glow sub-pixel G12 and the first blue photons pixel B 11 respectively with synthetic the 3rd pixel P13;
Step 140: import the second ruddiness sub-pixel R12, the second green glow sub-pixel G12 and the second blue photons pixel B 12 respectively with synthetic the 4th pixel P14;
Step 150: import the 3rd ruddiness sub-pixel R13, the second green glow sub-pixel G12 and the second blue photons pixel B 12 respectively with synthetic the 5th pixel P15;
Step 160: import the 3rd ruddiness sub-pixel R13, Three Greens photon pixel G13 and the second blue photons pixel B 12 respectively with synthetic the 6th pixel P16;
Step 170: according to the mode of above-mentioned composition diagram picture, till synthetic the 40800th pixel P140800;
Step 180: input 40800 pixel P1～P140800 that above-mentioned steps produced are listed as with composograph, promptly finish the optical scanner process;
Step 190: according to above-mentioned optical scanner process to file 34 from first to last finish n time scanning after, can produce n row image column in view of the above; And
Step 200: input said n row image column is to synthesize picture frame.
See also Fig. 8, it is the concrete structure and enforcement conceptual schematic view of second embodiment of Photosensing Units group 333 among Fig. 5.Wherein, Photosensing Units group 333 has three parallel first to the 3rd Photosensing Units 3334～3336 side by side, and first to the 3rd Photosensing Units 3334～3336 has 13600 light sensing unit SR21～SR213600, SG21～SG213600, the SB21～SB213600 that arranges with linear fashion (that is, along the x direction) next-door neighbour respectively.Preferable way is that the identical length of any two light sensing units in above-mentioned these light sensing units is same.About the arrangement mode of the Photosensing Units group of present embodiment as described in following, the edge 3335a of the edge 3334a of first Photosensing Units 3334 and second Photosensing Units 3335, spacing in the x direction is D3, moreover, the edge 3335a of second Photosensing Units 3335, with the edge 3336a of the 3rd Photosensing Units 3336, then be D4 in the spacing of x direction.A kind of preferable way is that wherein the size of space D 3 and space D 4 all is 1/2nd or 1/3rd of arbitrary light sensing unit length simultaneously.Yet the present embodiment and the first embodiment difference are that each light sensing unit of first to the 3rd Photosensing Units 3334～3336 all has effective sensing region N1 and invalid sensing region M1.Preferable way, wherein effectively sensing region N1 accounts for 2/3rds of light sensing unit area, and invalid sensing region M1 accounts for 1/3rd of light sensing unit area.Invalid in addition sensing region M1 can use the shielding means to cover light sensing unit and form.Moreover, each effective sensing region N1 of first to the 3rd Photosensing Units 3334～3336 is provided with the position, take the mode of arrangement interlaced with each other in the y direction, a kind of preferable way is, each light sensing unit in first to the 3rd Photosensing Units 3334～3336 is 1/2nd overlapping in the y direction.
In a second embodiment, the method that Photosensing Units 333 produces sub-pixel is identical with the described method of first embodiment, and promptly the sub-pixel that each optical sensor produced can be by synthetic three times of different pixels sampling.Yet, if wherein be noted that when the sample position of sub-pixel is positioned at invalid sensing region the sub-pixel of the position institute sensing of effective sensing region of the proximity sense of taking a sample.For example, correspond respectively to the invalid sensing region M1 of the first light sensing unit SR21 of first Photosensing Units 3334 when the sample position of the second pixel P22, effective sensing region N1 of the first light sensing unit SG21 of second Photosensing Units 3335, and during the effective sensing region N1 of the first light sensing unit SB21 of the 3rd Photosensing Units 3336, the sub-pixel R22 that the second pixel P22 obviously can be sensed by the effective sensing region N1 among the second light sensing unit SR22 of the contiguous first light sensing unit SR21, sub-pixels such as the first green glow sub-pixel G21 and the first blue photons pixel B 21 are formed.In like manner, correspond respectively to effective sensing region N1 of the second light sensing unit SR22 of first Photosensing Units 3334 when the sample position of the 3rd pixel P23, during the effective sensing region N1 of the invalid sensing region M1 of the first light sensing unit SG21 of second Photosensing Units 3335 and the first light sensing unit SB21 of the 3rd Photosensing Units 3336, the second pixel P22 then can be by the first ruddiness sub-pixel R22, the second green glow sub-pixel G22 that effective sensing region N1 of the second light sensing unit SG22 of the contiguous first light sensing unit SG21 is sensed, and the first blue photons pixel B, 21 sub-pixels such as grade are formed.Certainly, according to the way that Fig. 8 disclosed, also can be under the situation of the entity structure that does not change arbitrary Photosensing Units, reach easily and make scanning resolution bring up to three times purpose.
What need further attention in above-mentioned second embodiment is, the sample position of relevant first pixel P21, though it does not directly correspond to the first light sensing unit SB21 in the 3rd Photosensing Units 3336, but when synthesizing the first pixel P21, still the first blue photons pixel B 21 that is sensed by the effective sensing region N1 with the adjoining first light sensing unit SB21 in its sample position is formed with the first red/green sub-pixel R21, G21 institute is common.In addition, sampling synthesis mode about the 240799th and the 240800th pixel P240799, P240800, the sub-red/green sub-pixel R213601, the G213601 that are wherein used, its image values can be in the second and the 3rd Photosensing Units 3335,3336 the data that arrive of extra light sensing unit (scheming not shown) the institute's actual sensed that is provided with, or be default value.
See also Fig. 9 again, it is the concrete structure and enforcement conceptual schematic view of the 3rd embodiment of Photosensing Units group 333 among Fig. 5, wherein, Photosensing Units group 333 has three parallel first to the 3rd Photosensing Units 3337～3339 side by side, and the edge 3337a～3339a separately of first to the 3rd Photosensing Units 3337～3339, all is mutual aligned condition in the x direction.Moreover first to the 3rd Photosensing Units 3337～3339 has 13600 light sensing unit SR31～SR313600, SG31～SG313600, the SB31～SB313600 that arranges with linear fashion (that is, along the x direction) next-door neighbour respectively.Preferable way, the identical length of any two light sensing units in above-mentioned these light sensing units are together.Yet, the 3rd embodiment and aforementioned first and second embodiment difference are, each light sensing unit of first to the 3rd Photosensing Units 3337～3339 among the 3rd embodiment, all has the effective sensing region N2 that accounts for light sensing unit 1/3rd areas, and account for the invalid sensing region M2 of light sensing unit 2/3rds areas, and invalid sensing region also can use the shielding means to cover the surface of light sensation this element and forms.Moreover though first to the 3rd Photosensing Units 3337～3339 among this embodiment all is arranged parallel to each other, wherein interlaced with each other but nonoverlapping arrangement mode is taked in the y direction in the position that is provided with of each effective sensing region.Therefore, the pixels sampled principle and second embodiment of the 3rd embodiment are also identical, are promptly no longer given unnecessary details at this.In addition, sampling synthesis mode about the 240799th and the 240800th pixel P340799, P340800, the sub-red/green sub-pixel R313601, the G313601 that are wherein used, its image values can be in the second and the 3rd Photosensing Units 3338,3339 the data that arrive of extra light sensing unit (scheming not shown) the institute's actual sensed that is provided with, or be a default value.
From the above, second embodiment and the 3rd embodiment also further disclose arbitrary optical sensor effective sensing region the position is set, take staggered mode, with follow-up when carrying out the synthetic work of complete pixel, the sub-pixel of the effective sensing region institute sensing of each light sensing unit can be repeated to take a sample three times (that is to say different pixels can use same sub-pixel), thereby reaches the purpose that improves scanning resolution.Certainly, the area of effective sensing region of arbitrary optical sensor accounts for the ratio of light sensing unit entire area, is not limited to that the foregoing description discloses, and it also can other ratio mode be implemented.
Generally speaking, under the prerequisite that does not increase substantially manufacturing cost, the contact-type image sensor 33 that is disclosed among the present invention can utilize known Photosensing Units with 13600 light sensing units, and take the light sensing unit of three Photosensing Units/effectively arrange with interlace mode the position that is provided with of sensing region, thereby follow-up when synthesizing the image synthetic work of complete image pixel, make the sub-pixel that each light sensing unit/effective sensing region is produced to be repeated sampling synthetic three times, thus, after utilizing the contact-type image sensor 33 shown in Fig. 5 to carry out complete optical scanner process again, can produce 40800 pixels.Certainly, this obviously can reach easily and make the resolution of scanning bring up to three times purpose.
The present invention must be appointed by those skilled in the art and executes that the craftsman thinks and be to modify as all, the scope of right neither disengaging claims institute desire protection.
Claims (20)
1, a kind of contact-type image sensor is applied to scanning means, comprises:
First Photosensing Units has a plurality of light sensing units that are close to arrangement along first direction in regular turn, and this first Photosensing Units is in order to light sensing and produce a plurality of first elementary areas in view of the above; And
At least another Photosensing Units adjacently is arranged on this first Photosensing Units, and has a plurality of at least light sensing units that are close to arrangement along this first direction in regular turn, and this another Photosensing Units is in order to sensing another light and produce a plurality of elementary areas in view of the above at least;
Wherein, any light sensing unit in this first Photosensing Units the position is set, with respect to the position that is provided with of this light sensing unit that is adjacent in another Photosensing Units at least, overlap at least in second direction, and this first direction is vertical mutually with this second direction.
2, contact-type image sensor according to claim 1, wherein this at least any light sensing unit in another Photosensing Units the position is set, with respect to the position that is provided with of the light sensing unit that is adjacent in this first Photosensing Units, be 1/2nd overlapping mutually in second direction.
3, contact-type image sensor according to claim 1, wherein this at least another Photosensing Units comprise second and third Photosensing Units, and both arrangement positions with respect to this Photosensing Units by near to being this second and the 3rd Photosensing Units far in regular turn.
4, contact-type image sensor according to claim 3, wherein any light sensing unit in this second Photosensing Units is provided with the position, with respect to the position that is provided with of the light sensing unit that is adjacent in the 3rd Photosensing Units, overlap at least in this second direction.
5, contact-type image sensor according to claim 4, wherein any light sensing unit in this first Photosensing Units is provided with the position, the position that is provided with respect to any light sensing unit that is adjacent in this second Photosensing Units, be 1/3rd overlapping mutually in second direction, and any light sensing unit in this second Photosensing Units is provided with the position, with respect to the position that is provided with of any light sensing unit that is adjacent in the 3rd Photosensing Units, also be 1/3rd overlapping mutually in this second direction.
6, contact-type image sensor according to claim 3, wherein this first to the 3rd Photosensing Units is respectively ruddiness sensing element, green glow sensing element and blue light sensing element.
7, contact-type image sensor according to claim 3, wherein any light sensing unit in this first to the 3rd Photosensing Units has effective sensing region respectively.
8, contact-type image sensor according to claim 7, wherein any the effective sensing region in this first Photosensing Units is provided with the be provided with position of position with respect to the effective sensing region that is adjacent in this second Photosensing Units, interlaced in this second direction, and any the effective sensing region in this second Photosensing Units the position is set, with respect to the position that is provided with of the effective sensing region that is adjacent in the 3rd Photosensing Units, interlaced in this second direction.
9, contact-type image sensor according to claim 7, wherein any light sensing unit in this first to the 3rd Photosensing Units also has invalid sensing region respectively, and the subregion that this invalid sensing region is to use the shielding means to cover this any light sensing unit forms.
10, a kind of contact-type image sensor is applied to scanning means, comprises:
First Photosensing Units has a plurality of effective sensing region of arranging in regular turn along first direction, and this Photosensing Units produces a plurality of elementary areas in view of the above in order to light sensing; And
At least another Photosensing Units, adjacent this first Photosensing Units that is arranged on, and have a plurality of at least effective sensing regions of arranging in regular turn along this first direction, this at least another Photosensing Units in order to sensing another light and produce a plurality of at least elementary areas in view of the above at least;
Wherein, arbitrary effective sensing region in this first Photosensing Units the position is set, at least be adjacent the position that is provided with of sensing region in another Photosensing Units with respect to this, interlaced in second direction, and this first direction is vertical mutually with this second direction.
11, contact-type image sensor according to claim 10, wherein this at least another Photosensing Units comprise second and third Photosensing Units that has a plurality of light sensing units respectively, and both arrangement positions with respect to this first Photosensing Units by near to being this second and the 3rd Photosensing Units far in regular turn, and any the effective sensing region in this second Photosensing Units the position is set, with respect to the position that is provided with of the effective sensing region that is adjacent in the 3rd Photosensing Units, interlaced in second direction.
12, contact-type image sensor according to claim 11, wherein this first to the 3rd Photosensing Units also has a plurality of light sensing units respectively, and each a plurality of effective sensing region in this first to the 3rd Photosensing Units are respectively formed on a plurality of light sensing units in this first to the 3rd Photosensing Units.
13, contact-type image sensor according to claim 12, wherein a plurality of light sensing units in this first to the 3rd Photosensing Units also have a plurality of invalid sensing regions respectively, and any this invalid sensing region is all by the subregion of using the shielding means to cover this light sensing unit and is formed.
14, contact-type image sensor according to claim 12, wherein any light sensing unit in this first Photosensing Units is provided with the position, the position that is provided with respect to the light sensing unit that is adjacent in this second Photosensing Units, be 1/3rd overlapping mutually in second direction, and any light sensing unit in this second Photosensing Units is provided with the position, with respect to the position that is provided with of the light sensing unit that is adjacent in the 3rd Photosensing Units, also be 1/3rd overlapping mutually in second direction.
15, a kind of method of image scanning, be applied in the contact-type image sensor to produce picture frame, this contact-type image sensor comprises first to the 3rd Photosensing Units, and has a plurality of light sensing units of arranging in regular turn along first direction respectively, and this method comprises:
(A) produce first to three primary colors light, and have this first to the 3rd Photosensing Units of a plurality of light sensing units respectively, respectively in order to according to this first to three primary colors light, and produce a plurality of elementary areas respectively;
(B) import in this first to the 3rd Photosensing Units each elementary area that first light sensing unit produced respectively, with synthetic first pixel;
(C) import second elementary area that light sensing unit produced in this first Photosensing Units respectively, and each elementary area that first light sensing unit produced in this second and third Photosensing Units, with synthetic second pixel;
(D) import each second elementary area that light sensing unit produced in this first and second Photosensing Units respectively, and the elementary area that first light sensing unit produced in the 3rd Photosensing Units, with synthetic the 3rd pixel;
(E) import each second elementary area that light sensing unit produced in this first to the 3rd Photosensing Units respectively, with synthetic the 4th pixel;
(F) import the 3rd elementary area that light sensing unit produced in this first Photosensing Units respectively, and each second elementary area that light sensing unit produced in this second and third Photosensing Units, with synthetic the 5th pixel; And
(G) import each the 3rd elementary area that light sensing unit produced in this first and second Photosensing Units respectively, and second elementary area that light sensing unit produced in the 3rd Photosensing Units, with synthetic the 6th pixel;
(H) according to the mode of above-mentioned composition diagram picture, till synthetic last pixel; And
(I) input three times of a plurality of pixels that above-mentioned steps produced are with any image column in synthetic this picture frame.
16, the method for scan image according to claim 15, wherein any light sensing unit in this first Photosensing Units is provided with the position, the position that is provided with respect to the light sensing unit that is adjacent in this second Photosensing Units, be 1/3rd overlapping in second direction, and any light sensing unit in this second sensing element is provided with the position, the position that is provided with respect to the light sensing unit that is adjacent in the 3rd Photosensing Units, also be 1/3rd overlapping in this second direction, and this first direction is vertical mutually with this second direction.
17, the method for image scanning according to claim 15, wherein any light sensing unit in this first to the 3rd Photosensing Units has effective sensing region respectively.
18, the method for image scanning according to claim 17, wherein any the effective sensing region in this first Photosensing Units is provided with the position, the position that is provided with respect to the effective sensing region that is adjacent in this second Photosensing Units, interlaced in this second direction, and any the effective sensing region in this second Photosensing Units the position is set, with respect to the position that is provided with of the effective sensing region that is adjacent in the 3rd Photosensing Units, also interlaced in this second direction.
19, the method for image scanning according to claim 17, wherein any light sensing unit in this first to the 3rd Photosensing Units also has invalid sensing region respectively, and this invalid sensing region subregion of using the shielding means to cover this any light sensing unit of serving as reasons forms.
20, the method for scan image according to claim 15, wherein this first primitive color light, this second primitive color light and this primaries are respectively ruddiness, green glow and blue light.
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| CN 200610091730 CN101087351A (en) | 2006-06-09 | 2006-06-09 | Touch image sensor and image scanning method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102638652A (en) * | 2011-02-10 | 2012-08-15 | 原相科技股份有限公司 | Image sensing module and optical sensing module |
| CN103270744A (en) * | 2010-12-30 | 2013-08-28 | 奥迪克激光应用技术股份有限公司 | Method for controlling an apparatus for printing and/or scanning an object |
| WO2014015595A1 (en) * | 2012-07-27 | 2014-01-30 | 威海华菱光电股份有限公司 | Contact type image sensor, image and text processing system and processing method |
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2006
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103270744A (en) * | 2010-12-30 | 2013-08-28 | 奥迪克激光应用技术股份有限公司 | Method for controlling an apparatus for printing and/or scanning an object |
| CN103270744B (en) * | 2010-12-30 | 2015-08-26 | 奥迪克激光应用技术股份有限公司 | A kind of for printing and/or the device of scanning object and control method thereof |
| CN102638652A (en) * | 2011-02-10 | 2012-08-15 | 原相科技股份有限公司 | Image sensing module and optical sensing module |
| CN102638652B (en) * | 2011-02-10 | 2016-04-20 | 原相科技股份有限公司 | Image sensing module and optical sensor system |
| WO2014015595A1 (en) * | 2012-07-27 | 2014-01-30 | 威海华菱光电股份有限公司 | Contact type image sensor, image and text processing system and processing method |
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