CN105391951A - Method, device and terminal for displaying image - Google Patents
Method, device and terminal for displaying image Download PDFInfo
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- CN105391951A CN105391951A CN201410449691.3A CN201410449691A CN105391951A CN 105391951 A CN105391951 A CN 105391951A CN 201410449691 A CN201410449691 A CN 201410449691A CN 105391951 A CN105391951 A CN 105391951A
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Abstract
The invention discloses a method, device and terminal for displaying an image, and the method comprises the steps: obtaining the EXIF information of an image, wherein the EXIF information at least comprises at least one of the following parts: exposure time, an ISO value, an image storage spatial value, and image resolution; and determining the extreme amplification level of the image according to the EXIF information, so as to clearly display the detail of the image at the extreme amplification level. The method can adaptively limit the maximum amplification size of the image, so as to enable a user to still see the detail clearly, thereby avoiding a condition that the user cannot see the image clearly after the extreme amplification of the image, and solving a problem that the use cannot browse the image because the image is amplified to an extent that the user cannot see the image clearly after amplification and the sharpness of images are different from each other, and a problem that the user experience is poorer.
Description
Technical field
The present invention relates to image processing field, particularly relate to a kind of method, device and the terminal that show image.
Background technology
Existing terminal picture browsing does not do any process in conjunction with picture, and just the simple terminal screen that is presented at by picture is browsed for user.
The work of current picture browsing pattern in Consumer's Experience can only meet simply browses demand, when picture is presented to terminal use, only by adjusting screen brightness, adopt graphic process unit (GraphicProcessingUnit, referred to as GPU) etc. module strengthen color, contrast etc. when playing up and make picture vivider, when but user browses all pictures when experiencing, use same pattern, some differentiation process are not done to the display of different picture, perfect Consumer's Experience cannot be provided.
When user browses some images, the more details of observing this image may be wanted, therefore can enlarged image, but because the definition of self of image is different, may when enlarged image, being amplified to user cannot the degree of clear viewing, and cause user to browse useless enlarged image, Consumer's Experience is poor.
Summary of the invention
The invention provides a kind of method, device and the terminal that show image, different with the definition of self at least solved due to image, when amplifying image browsing, cannot the degree of clear viewing to user by Nonlinear magnify, user is caused to browse useless enlarged image, the problem that Consumer's Experience is poor.
On the one hand, the invention provides a kind of method showing image, comprise: the exchangeable image file (ExchangeableImageFile obtaining image, referred to as EXIF) information, wherein, described EXIF information at least comprises one of following: time for exposure, camera photosensitivity (ISO) value, image storage space value, image resolution ratio; The amplification coefficient corresponding according to described EXIF information determines the limit magnification level of described image, still clearly can show image detail under described limit magnification level.
Further, described method at least also comprises one of following: be the different interval time for exposure arrange corresponding levels of exposure according to the length of described time for exposure, and arranges the first corresponding image magnification factor for each levels of exposure; Corresponding ISO grade is set according to the ISO value that the size of described ISO value is different interval, and is that each ISO grade arranges the second corresponding image magnification factor; Corresponding storage level is set according to the image storage space value that the size of described image storage space value is different interval, and is that each storage level arranges the 3rd corresponding image magnification factor; Corresponding resolution scale is set according to the image resolution ratio that the size of described image resolution ratio is different interval, and is that each resolution scale arranges the 4th corresponding image magnification factor.
Further, when described EXIF information is the time for exposure, the amplification coefficient corresponding according to described EXIF information determines that the limit magnification level of described image comprises: the time for exposure obtaining described image, and determines the levels of exposure residing for the described time for exposure; Determine the amplification coefficient of described image according to described levels of exposure, and determine the limit magnification level of described image according to described amplification coefficient.
Further, when described EXIF information is ISO value, the amplification coefficient corresponding according to described EXIF information determines that the limit magnification level of described image comprises: the ISO value obtaining described image, and determines the ISO grade residing for described ISO value; Determine the amplification coefficient of described image according to described ISO grade, and determine the limit magnification level of described image according to described amplification coefficient.
Further, when described EXIF information is image storage space value, the amplification coefficient corresponding according to described EXIF information determines that the limit magnification level of described image comprises: the image storage space value obtaining described image, and determines the storage level residing for described image storage space value; Determine the amplification coefficient of described image according to institute's storage level, and determine the limit magnification level of described image according to described amplification coefficient.
Further, when described EXIF information is image resolution ratio, the amplification coefficient corresponding according to described EXIF information determines that the limit magnification level of described image comprises: the image resolution ratio obtaining described image, and determines the resolution scale residing for described image resolution ratio; Determine the amplification coefficient of described image according to institute's resolution scale, and determine the limit magnification level of described image according to described amplification coefficient.
Further, the limit magnification level X of described image: limit magnification level X=w is determined according to following formula
1* a+w
2* b+w
3* c+w
4* d, wherein, a is amplification coefficient corresponding to time for exposure, and b is amplification coefficient corresponding to ISO value, and c is amplification coefficient corresponding to image storage space value, and d is amplification coefficient corresponding to image resolution ratio, w
1, w
2, w
3and w
4be respectively the weight proportion that each EXIF information is shared in limit magnification level.
On the other hand, present invention also offers a kind of device showing image, comprising: acquisition module, for obtaining the EXIF information of image, wherein, described EXIF information at least comprises one of following: time for exposure, ISO value, image storage space value, image resolution ratio; Determination module, determines the limit magnification level of described image for the amplification coefficient corresponding according to described EXIF information, still clearly can show image detail under described limit magnification level.
Further, described device also comprises: arrange module, for being the different interval time for exposure arrange corresponding levels of exposure according to the length of described time for exposure, and arranges the first corresponding image magnification factor for each levels of exposure; Corresponding ISO grade is set according to the ISO value that the size of described ISO value is different interval, and is that each ISO grade arranges the second corresponding image magnification factor; Corresponding storage level is set according to the image storage space value that the size of described image storage space value is different interval, and is that each storage level arranges the 3rd corresponding image magnification factor; Corresponding resolution scale is set according to the image resolution ratio that the size of described image resolution ratio is different interval, and is that each resolution scale arranges the 4th corresponding image magnification factor.
Further, described determination module determines limit magnification level X: the limit magnification level X=w of described image according to following formula
1* a+w
2* b+w
3* c+w
4* d, wherein, a is amplification coefficient corresponding to time for exposure, and b is amplification coefficient corresponding to ISO value, and c is amplification coefficient corresponding to image storage space value, and d is amplification coefficient corresponding to image resolution ratio, w
1, w
2, w
3and w
4be respectively the weight proportion that each EXIF information is shared in limit magnification level.
Present invention also offers a kind of terminal, described terminal comprises the device of display image provided by the invention.
The present invention obtains the EXIF information of image, the amplification coefficient corresponding to this EXIF information determines the limit magnification level of image, and the maximum up-sizing of image is limited by the limit magnification level determined, still details can be observed clearly after amplification to make user, avoiding user cannot clear view image after too being amplified by image, the definition of self solved due to image is different, when amplifying image browsing, cannot the degree of clear viewing to user by Nonlinear magnify, user is caused to browse useless enlarged image, the problem that Consumer's Experience is poor.
Accompanying drawing explanation
By reading hereafter detailed description of the preferred embodiment, various other advantage and benefit will become cheer and bright for those of ordinary skill in the art.Accompanying drawing only for illustrating the object of preferred implementation, and does not think limitation of the present invention.And in whole accompanying drawing, represent identical parts by identical reference symbol.In the accompanying drawings:
Fig. 1 is the flow chart of the method showing image in the embodiment of the present invention;
Fig. 2 is the structural representation of the device showing image in the embodiment of the present invention;
Fig. 3 is the preferred structure schematic diagram of the device showing image in the embodiment of the present invention;
Fig. 4 is the flow chart of the method showing image in the preferred embodiment of the present invention;
Fig. 5 is the schematic flow sheet determining the amplification coefficient that the time for exposure is corresponding in the preferred embodiment of the present invention;
Fig. 6 is the schematic flow sheet determining the amplification coefficient that ISO value is corresponding in the preferred embodiment of the present invention;
Fig. 7 is the schematic flow sheet determining the amplification coefficient that resolution is corresponding in the preferred embodiment of the present invention;
Fig. 8 is the schematic flow sheet determining the amplification coefficient that storage size is corresponding in the preferred embodiment of the present invention.
Embodiment
Below with reference to accompanying drawings exemplary embodiment of the present disclosure is described in more detail.Although show exemplary embodiment of the present disclosure in accompanying drawing, however should be appreciated that can realize the disclosure in a variety of manners and not should limit by the embodiment set forth here.On the contrary, provide these embodiments to be in order to more thoroughly the disclosure can be understood, and complete for the scope of the present disclosure can be conveyed to those skilled in the art.
In order to the definition of self solved due to image is different, when amplifying image browsing, cannot the degree of clear viewing to user by Nonlinear magnify, user is caused to browse useless enlarged image, the problem that Consumer's Experience is poor, the invention provides a kind of method, device and the terminal that show image, below in conjunction with accompanying drawing and embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, do not limit the present invention.
Embodiments provide a kind of method showing image, its flow process as shown in Figure 1, comprises step S102 to step S104:
S102, obtains the EXIF information of image, and wherein, EXIF information at least comprises one of following: time for exposure, ISO value, image storage space value, image resolution ratio;
S104, according to the limit magnification level of amplification coefficient determination image corresponding to EXIF information, still clearly can show image detail under limit magnification level.
The embodiment of the present invention obtains the EXIF information of image, the amplification coefficient corresponding to this EXIF information determines the limit magnification level of image, the maximum up-sizing of image further can also be limited by the limit magnification level determined, still details can be observed clearly after amplification to make user, avoiding user cannot clear view image after too being amplified by image, the definition of self solved due to image is different, when amplifying image browsing, cannot the degree of clear viewing to user by Nonlinear magnify, user is caused to browse useless enlarged image, the problem that Consumer's Experience is poor.
In implementation process, if arrange a coefficient to determine number of stages of amplification to the EXIF value of information of each slight change, then need more amplification coefficient, also more memory space is just needed, therefore, the embodiment of the present invention is in order to optimize such scheme further, elevator system performance, for EXIF information divides different intervals, each interval arranges a corresponding amplification coefficient, such as, be that the different interval time for exposure, corresponding levels of exposure was set according to the length of time for exposure, and be that each levels of exposure arranges the first corresponding image magnification factor; Corresponding ISO grade is set according to the ISO value that the size of ISO value is different interval, and is that each ISO grade arranges the second corresponding image magnification factor; Corresponding storage level is set according to the image storage space value that the size of image storage space value is different interval, and is that each storage level arranges the 3rd corresponding image magnification factor; Corresponding resolution scale is set according to the image resolution ratio that the size of image resolution ratio is different interval, and is that each resolution scale arranges the 4th corresponding image magnification factor.
When the type of EXIF information is different, not identical according to the process of the limit magnification level of amplification coefficient determination image corresponding to EXIF information yet, in the present embodiment, EXIF information can be separately time for exposure, camera photosensitivity ISO value, image storage space value or image resolution ratio etc., certainly, also can be wherein several.
If EXIF information is the time for exposure, then obtain the time for exposure of image, and determine the levels of exposure residing for the time for exposure; According to the amplification coefficient of levels of exposure determination image, and according to the limit magnification level of amplification coefficient determination image.
If EXIF information is ISO value, then obtain the ISO value of image, and determine the ISO grade residing for ISO value; According to the amplification coefficient of ISO grade determination image, and according to the limit magnification level of amplification coefficient determination image.
If EXIF information is image storage space value, then obtains the image storage space value of image, and determine the storage level residing for image storage space value; According to the amplification coefficient of institute's storage level determination image, and according to the limit magnification level of amplification coefficient determination image.
If EXIF information is image resolution ratio, then obtain the image resolution ratio of image, and determine the resolution scale residing for image resolution ratio; According to the amplification coefficient of institute's resolution scale determination image, and according to the limit magnification level of amplification coefficient determination image.
If when EXIF information gets multiple above-mentioned information, can according to limit magnification level X: the limit magnification level X=w of following formula determination image
1* a+w
2* b+w
3* c+w
4* d, wherein, a is amplification coefficient corresponding to time for exposure, and b is amplification coefficient corresponding to ISO value, and c is amplification coefficient corresponding to image storage space value, and d is amplification coefficient corresponding to image resolution ratio, w
1, w
2, w
3and w
4be respectively the weight proportion that each EXIF information is shared in limit magnification level.
When realizing, can several with reference to wherein, such as, choose the EXIF information of three types wherein, other unselected EXIF information can be set to zero when weight is then set, in the present embodiment, weight proportion can experimentally experience arrange, also can arrange according to the demand of user.
The embodiment of the present invention additionally provides a kind of device showing image, and its structural representation as shown in Figure 2, comprising:
Acquisition module 10, for obtaining the EXIF information of image, wherein, EXIF information at least comprises one of following: time for exposure, ISO value, image storage space value, image resolution ratio; Determination module 20, is coupled with acquisition module 10, for the limit magnification level according to amplification coefficient determination image corresponding to EXIF information, still clearly can show image detail under limit magnification level.
Fig. 3 also show the preferred structure schematic diagram of said apparatus, device also comprises: arrange module 30, be coupled with acquisition module 10, for being the different interval time for exposure arrange corresponding levels of exposure according to the length of time for exposure, and the first corresponding image magnification factor is set for each levels of exposure; Corresponding ISO grade is set according to the ISO value that the size of ISO value is different interval, and is that each ISO grade arranges the second corresponding image magnification factor; Corresponding storage level is set according to the image storage space value that the size of image storage space value is different interval, and is that each storage level arranges the 3rd corresponding image magnification factor; Corresponding resolution scale is set according to the image resolution ratio that the size of image resolution ratio is different interval, and is that each resolution scale arranges the 4th corresponding image magnification factor.
Determination module 20 can according to the limit magnification level X:X=w of following formula determination image
1* a+w
2* b+w
3* c+w
4* d, wherein, a is amplification coefficient corresponding to time for exposure, and b is amplification coefficient corresponding to ISO value, and c is amplification coefficient corresponding to image storage space value, and d is amplification coefficient corresponding to image resolution ratio, w
1, w
2, w
3and w
4be respectively the weight proportion that each EXIF information is shared in limit magnification level.
Present invention also offers a kind of terminal, described terminal comprises the device of display image provided by the invention.
Preferred embodiment
The photographed scene relevant information of the present embodiment foundation picture decides user and uses when browsing pictures the amplification of which kind of rank to experience, and arranges different multiplication factors for different picture.
When determining scene brightness relevant information, the light luminance of main consideration pictures taken, bright and clear when taking, such picture can after shorter exposure, the details obtaining current scene can be easy to, picture seems more meticulous bright-coloured, and when light is inadequate, picture needs more exposure, simultaneously because the operation principle of camera camera chip and limitation, luminance gain can be improved, the comparatively normal picture of brightness is obtained with this, noise will certainly be caused so exaggerated equally, and when effect optimization process being carried out to picture in rear end, such impact cannot be eliminated completely, thus picture can seem that some is coarse after amplification.Different scene capture goes out different pictures, also corresponding embodiment is had in picture-storage information, the such as picture of outdoor shooting, the general time for exposure is shorter, and ISO value is lower, and YUV (a kind of colour coding method) image compression become JPEG (a kind of Standard of image compression) after the memory space that takies also can be bigger than normal, otherwise, the photo lithography of indoor shot is general longer, and ISO value is also higher, and the memory space taken after JPEG after image compression also can be relatively little.Meanwhile, the shooting resolution of selection also can have considerable influence to picture, and resolution is larger, and when showing on the terminal device, picture detail is more, and that can amplify is larger, when resolution is less, once amplify often easily fuzzy.
Such as, when user have taken some sunny, bright scene pictures in outdoor, be identified as after outdoor bright and clear environment through this technology, when terminal demonstration, the multiplication factor of picture is promoted one or more rank, such user can see more details when amplifying display.When have taken some indoor scenes in the environment of user in dark, due to these scene dark, noise is more, image quality is fine and smooth not, at this moment user is when browsing, and recognizes after pictures taken quality belongs to insufficient light environment, the multiplication factor of picture controlled in a certain rank through this technology, avoid amplifying too much, cause picture to seem Rough Fuzzy.
To take pictures under different scene principle and picture compression technical Analysis according to above camera, the embodiment of the present invention determines current shooting environment by time for exposure, ISO value, then composition graphs chip resolution, takies memory space to determine that rank is experienced in amplification needed for picture.Because the information used in these shootings has been stored into when picture is preserved in the EXIF information of picture, thus, directly can carry out reading to the EXIF information of picture and analyze, magnification level when determining to browse.Above-mentioned detailed process as shown in Figure 4, comprises step S401 to step S406:
S401, obtains the time for exposure of image, and determines the first amplification coefficient of its correspondence according to the time for exposure.
This step can be as shown in Figure 5, in implementation process, obtain the time for exposure of present image, then this time for exposure and each time for exposure interval are compared, to determine belonging to which time for exposure interval, and determine the amplification coefficient of its correspondence further, the amplification coefficient determined the most at last is decided to be amplification coefficient corresponding to described time for exposure.
S402, obtains the ISO value of image, and determines the second amplification coefficient of its correspondence according to ISO value.
This step as shown in Figure 6, in implementation process, can obtain the ISO value of present image, then this ISO value and each ISO interval are compared, interval to determine which belongs to, and determine the amplification coefficient of its correspondence further, the amplification coefficient determined the most at last is decided to be the amplification coefficient of ISO value.
S403, obtains the resolution of image, and determines the 3rd amplification coefficient of its correspondence according to resolution.
This step can be as shown in Figure 7, in implementation process, obtain the resolution of present image, then this resolution and each resolution interval are compared, interval to determine belonging to which resolution, and determine the amplification coefficient of its correspondence further, the amplification coefficient determined the most at last is decided to be the amplification coefficient of resolution time.
S404, obtains the storage size of image, and determines the 4th amplification coefficient of its correspondence according to storage size.
This step can be as shown in Figure 8, in implementation process, obtain the storage size of present image, then this storage size and each interval are compared, to determine to belong between which memory block, and determine the amplification coefficient of its correspondence further, the amplification coefficient determined the most at last is decided to be the amplification coefficient of storage size.
S405, according to the magnification level of above-mentioned four amplification coefficient computed image.
In the process that S405 performs, the multiplication factor of image can obtain according to following computing formula: magnification level X=w
1* a+w
2* b+w
3* c+w
4* d.Wherein, a, b, c, d are respectively amplification coefficient corresponding to each EXIF information, w
1, w
2, w
3, w
4for the weight proportion shared by each EXIF information, these ratio values obtain by a large amount of practical application.
After reading EXIF information, obtain and calculate the multiplication factor of corresponding picture, just can adjust the multiplication factor of picture according to different pictures, for user presents different details experience.
S406, is applied to the magnification level determined in the display of image.
Certainly, those skilled in the art also can pay the utmost attention to the resolution sizes of the picture in picture EXIF information, time for exposure, ISO value, divide different amplification display levels according to different levels, and are aided with and take memory space and determine final magnification level.
The embodiment of the present invention fully takes into account the difference existed at the picture of different scene capture in image quality, when user's viewing experience, unification is amplified to specific factor, can not take into account all, thus adopt for the picture of varying environment shooting and different browse amplification effect, provide better visual effect to experience to user.Relative to traditional picture browsing pattern, the information that this programme is preserved in the information needed for detecting in picture is all from picture, do not rely on the camera applications of a certain characteristic, no matter be from the picture on mobile phone, digital camera or the Internet, after Loading Image, directly read relevant information then self adaptation amplification picture after this technology for detection, speed is fast, effective, be easy to realize promoting.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (11)
1. show a method for image, it is characterized in that, comprising:
Obtain the exchangeable image file EXIF information of image, wherein, described EXIF information at least comprises one of following: time for exposure, camera photosensitivity ISO value, image storage space value, image resolution ratio;
The amplification coefficient corresponding according to described EXIF information determines the limit magnification level of described image, still clearly can show image detail under described limit magnification level.
2. the method for claim 1, is characterized in that, described method at least also comprises one of following:
Corresponding levels of exposure is set according to the time for exposure that the length of described time for exposure is different interval, and is that each levels of exposure arranges the first corresponding image magnification factor;
Corresponding ISO grade is set according to the ISO value that the size of described ISO value is different interval, and is that each ISO grade arranges the second corresponding image magnification factor;
Corresponding storage level is set according to the image storage space value that the size of described image storage space value is different interval, and is that each storage level arranges the 3rd corresponding image magnification factor;
Corresponding resolution scale is set according to the image resolution ratio that the size of described image resolution ratio is different interval, and is that each resolution scale arranges the 4th corresponding image magnification factor.
3. method as claimed in claim 2, it is characterized in that, when described EXIF information is the time for exposure, the amplification coefficient corresponding according to described EXIF information determines that the limit magnification level of described image comprises:
Obtain the time for exposure of described image, and determine the levels of exposure residing for the described time for exposure;
Determine the amplification coefficient of described image according to described levels of exposure, and determine the limit magnification level of described image according to described amplification coefficient.
4. method as claimed in claim 2, it is characterized in that, when described EXIF information is ISO value, the amplification coefficient corresponding according to described EXIF information determines that the limit magnification level of described image comprises:
Obtain the ISO value of described image, and determine the ISO grade residing for described ISO value;
Determine the amplification coefficient of described image according to described ISO grade, and determine the limit magnification level of described image according to described amplification coefficient.
5. method as claimed in claim 2, it is characterized in that, when described EXIF information is image storage space value, the amplification coefficient corresponding according to described EXIF information determines that the limit magnification level of described image comprises:
Obtain the image storage space value of described image, and determine the storage level residing for described image storage space value;
Determine the amplification coefficient of described image according to institute's storage level, and determine the limit magnification level of described image according to described amplification coefficient.
6. method as claimed in claim 2, it is characterized in that, when described EXIF information is image resolution ratio, the amplification coefficient corresponding according to described EXIF information determines that the limit magnification level of described image comprises:
Obtain the image resolution ratio of described image, and determine the resolution scale residing for described image resolution ratio;
Determine the amplification coefficient of described image according to institute's resolution scale, and determine the limit magnification level of described image according to described amplification coefficient.
7. the method according to any one of claim 1 to 6, is characterized in that,
The limit magnification level X of described image is determined according to following formula:
Limit magnification level X=w
1* a+w
2* b+w
3* c+w
4* d, wherein, a is amplification coefficient corresponding to time for exposure, and b is amplification coefficient corresponding to ISO value, and c is amplification coefficient corresponding to image storage space value, and d is amplification coefficient corresponding to image resolution ratio, w
1, w
2, w
3and w
4be respectively the weight proportion that each EXIF information is shared in limit magnification level.
8. show a device for image, it is characterized in that, comprising:
Acquisition module, for obtaining the exchangeable image file EXIF information of image, wherein, described EXIF information at least comprises one of following: time for exposure, camera photosensitivity ISO value, image storage space value, image resolution ratio;
Determination module, determines the limit magnification level of described image for the amplification coefficient corresponding according to described EXIF information, still clearly can show image detail under described limit magnification level.
9. device as claimed in claim 8, it is characterized in that, described device also comprises:
Module is set, for being the different interval time for exposure arrange corresponding levels of exposure according to the length of described time for exposure, and the first corresponding image magnification factor is set for each levels of exposure; Corresponding ISO grade is set according to the ISO value that the size of described ISO value is different interval, and is that each ISO grade arranges the second corresponding image magnification factor; Corresponding storage level is set according to the image storage space value that the size of described image storage space value is different interval, and is that each storage level arranges the 3rd corresponding image magnification factor; Corresponding resolution scale is set according to the image resolution ratio that the size of described image resolution ratio is different interval, and is that each resolution scale arranges the 4th corresponding image magnification factor.
10. device as claimed in claim 8 or 9, it is characterized in that, described determination module determines the limit magnification level X of described image according to following formula:
Limit magnification level X=w
1* a+w
2* b+w
3* c+w
4* d, wherein, a is amplification coefficient corresponding to time for exposure, and b is amplification coefficient corresponding to ISO value, and c is amplification coefficient corresponding to image storage space value, and d is amplification coefficient corresponding to image resolution ratio, w
1, w
2, w
3and w
4be respectively the weight proportion that each EXIF information is shared in limit magnification level.
11. 1 kinds of terminals, is characterized in that, described terminal comprises the device described in any one of claim 8-9.
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