JP4402365B2 - Terminal - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a PDA (personal digital assistants) and ends at the end of a mobile phone or the like, to end the end that having a fingerprint matching function.
[0002]
[Prior art]
In recent years, PDAs and mobile phones have become multi-functional and have functions for transmitting and receiving electronic information and image information through wired and wireless networks as well as the original electronic notebook and telephone applications. Furthermore, a function as a payment terminal is provided, and a secure personal authentication function is also required.
[0003]
An information terminal equipped with a fingerprint authentication function is also considered. For example, a mobile phone that can prevent unauthorized use by a third party by reading a fingerprint of a specific user (owner), comparing it with information stored in advance, and enabling transmission / reception only when the information matches. For example, if it is confirmed that the collation fingerprint belongs to the owner himself / herself, the secret information such as a personal identification number is displayed on the display unit so that the secret information can be confirmed or changed. Therefore, a mobile phone (for example, see Patent Document 2) with improved security performance for secret information is considered.
[0004]
A notebook PC can be mounted with a fingerprint sensor with an outer shape of 20 mm square or more and a fingerprint reading surface (sensor surface) of about 15 mm square, but small information terminals such as mobile phones are becoming smaller and more functional. As a result, the footprint of the fingerprint sensor has been greatly reduced. For example, the fingerprint reading surface can only be mounted on a small fingerprint sensor such as a 7 mm square.
[0005]
[Patent Document 1]
Japanese Patent Laid-Open No. 5-95329 (FIG. 1, page 2)
[Patent Document 2]
JP 2001-236324 A (FIG. 1, pages 5-8)
[0006]
[Problems to be solved by the invention]
In a small fingerprint sensor, the area of the fingerprint reading surface is small, and when the finger is placed on the fingerprint reading surface, the fingerprint reading surface is hidden by the finger, especially whether the finger position in the finger length direction is accurate. It is difficult to judge. For this reason, in the small fingerprint sensor, the amount of overlap of the fingerprint area at the time of fingerprint registration and fingerprint collation becomes small due to the positional deviation of the finger, and the extraction of the feature points at the overlap portion of the fingerprint is not sufficient, There is a problem that fingerprint verification cannot be performed.
[0007]
In this case, it may be possible to arrange a contact guide that contacts the finger and positions the finger around the fingerprint reading surface, but in this case, a contact guide with a height that contacts the finger is required. As a result, tall abutment guide, end powder itself becomes large, not to meet the demand for miniaturization. Further, in a folding cellular phone, it is difficult to place a tall contact guide around the fingerprint sensor due to limitations on thickness and installation area. In addition, in the method in which the tip of the finger is abutted against the contact guide, there is a problem that the position of the finger is greatly shifted according to the length of the nail.
[0008]
The present invention is intended to solve these problems, even with a small area of the fingerprint reading face, it is possible to reliably perform fingerprint collation, to achieve a terminus do not want to inhibit downsize end end itself It is for the purpose.
[0009]
[Means for Solving the Problems]
The invention according to claim 1 relates to a foldable terminal, and has a fingerprint reading surface installed on one of the opposing surfaces when folded as shown in FIG. 1 showing an embodiment of the present invention. A fingerprint sensor 8 and spacer projections 5 and 6 provided on each of the left and right sides of the fingerprint sensor 8 for regulating the distance between the opposing surfaces when folded, and the spacer projections 5 and 6 are provided on the fingerprint sensor 8. As a positioning index in the front-rear direction of the base of the nail at the position on the straight line L that divides the fingerprint reading surface 9 into two on the front and back and on the left and right positions of the fingerprint reading surface 9 It is characterized in that it is used.
[0014]
In this invention, since the already existing spacer protrusion is only moved to the position of the positioning index, the configuration is simple.
[0015]
The invention according to claim 2 is the terminal according to claim 1, wherein the spacer projection, the input key part, and the fingerprint reading surface are provided on one of the opposing surfaces, and information is provided on the other of the opposing surfaces. Having a display screen, the input key portion is located closer to the folding center than the fingerprint reading surface, the keyboard surface of the input key portion is formed lower than the non-keyboard surface where the input key portion is not disposed, The fingerprint reading surface is formed at the center of the non-keyboard surface .
[0016]
In this invention, since the keyboard surface of the input key portion is lower than the non-keyboard surface, there is an advantage that the tip of the finger facing the input key portion does not inadvertently press the key of the input key portion during fingerprint verification. is there.
[0017]
A third aspect of the present invention is the terminal according to the second aspect, wherein the information display screen has a finger placed on the fingerprint reading surface so that a base of a nail overlaps a straight line connecting the spacer protrusions at the time of fingerprint reading. It is characterized by a display that prompts the user to place it on top .
[0018]
In this invention, since the operator knows that the finger should be placed so that the base of the nail overlaps the straight line connecting the spacer protrusions from the display of the information display screen, the positioning of the finger can be repeated accurately without hesitation. .
[0019]
According to a fourth aspect of the present invention, there is provided a microphone, a fingerprint sensor having a fingerprint reading surface, and left and right sides of the fingerprint sensor, and used for collecting sound of the microphone used as a finger positioning index in reading the fingerprint sensor. A sound collecting hole for the microphone is provided at a position on a straight line that divides the fingerprint reading surface of the fingerprint sensor into two on the front and back, and at a position on the left and right of the fingerprint reading surface, It is used as a positioning index in the front-rear direction of the base of the nail in reading by a fingerprint sensor .
[0020]
Embodiment
(First embodiment)
A first embodiment of the present invention will be described with reference to FIGS. This embodiment relates to a foldable PDA. FIG. 1 is a plan view of the embodiment in an open state (use state), and FIG. 2 is a left side view in a closed state.
[0021]
In the present embodiment, the flip 2 is configured to be openable and closable with respect to the main body 1 around the hinge portion 3, and the upper surface of the main body 1 (the surface facing the flip) is the surface facing the main body 1 and the flip 2 when folded. Spacer protrusions 5 and 6 for regulating the interval, an input key portion 7, and a fingerprint reading surface 9 of the fingerprint sensor 8 are provided. On the other hand, an information display screen 11 made of liquid crystal is provided on the surface of the flip 2 facing the main body 1.
[0022]
The spacer protrusions 5 and 6 are made of an elastic material such as rubber, and are not only used for the original function of restricting further closing operation by elastically contacting the opposite surface of the flip 2 when the flip 2 is closed, but also when reading a fingerprint. It also serves as a finger positioning index. For this reason, the spacer protrusions 5 and 6 are arranged at a position on the straight line L that divides the fingerprint reading surface 9 of the fingerprint sensor 8 into the front and rear (vertical direction in FIG. 1), and at the left and right positions of the fingerprint reading surface 9. As shown in FIG. 3, by aligning the base 14 of the nail 13 here, the finger 12 can be positioned in the length direction (front-rear direction).
[0023]
According to the research of the present inventor, the base 14 of the nail 13 in the length direction of the finger 12 (the base 14 in the center of the nail 13 in the width direction) and the center of the fingerprint pattern are at substantially the same position. Therefore, in the present embodiment, the straight line L that divides the fingerprint reading surface 9 of the fingerprint sensor 8 into two in the front-and-rear direction passes through the center O of the fingerprint reading surface 9 (the intersection of diagonal lines when the fingerprint reading surface 9 is rectangular). Is selected.
[0024]
At the time of fingerprint reading, as shown in FIG. 3, the finger 12 is placed on the fingerprint reading surface 9 so that the center portion of the base 14 of the nail 13 overlaps the straight line (straight line L) connecting the spacer protrusions 5 and 6. By placing it, the center of the fingerprint pattern is almost overlapped with the center O of the fingerprint reading surface 9.
[0025]
Positioning of the finger 12 in the width direction (left-right direction) can be relatively easily made by visual observation because the finger 12 only needs to be brought to the center of the width of the main body 1, and the finger 12 is centered on the fingerprint reading surface 9. If the spacer protrusions 5 and 6 are arranged at symmetrical positions with respect to the center O of the fingerprint reading surface 9 (this is the case in FIG. 1), the width of the main body 1 is not shifted. The finger 12 is positioned at the center between the spacer projections 5 and 6 with a smaller interval, and positioning in the left-right direction becomes easier.
[0026]
In this embodiment, when the fingerprint is read, the finger 12 is placed on the fingerprint 12 so that the base 14 of the nail 13 overlaps the straight line L connecting the spacer protrusions 5 and 6 as illustrated in the information display screen 11 in FIG. The display for prompting the user to place it on the reading surface 9 is performed on the information display screen 11 (this display is performed on at least one of the figure and the text). From the display on the information display screen 11, the operator knows that the finger 12 should be placed so that the base 14 of the nail 13 overlaps the straight line L connecting the spacer protrusions 5, 6, so the positioning of the finger 12 is not lost. Can be repeated accurately.
[0027]
If the finger 12 is positioned by positioning the base 14 of the nail 13 based on the spacer projections 5 and 6 which are also positioning indexes, the area of the fingerprint reading surface 9 is small and the finger 12 hides the fingerprint reading surface 9. However, the center of the fingerprint pattern can always be placed at a fixed position on the fingerprint reading surface 9, and there is no difference between fingerprint registration and fingerprint collation. For this reason, the amount of overlap of the fingerprint area at the time of fingerprint registration and fingerprint collation can be increased, and feature points can be sufficiently extracted at the fingerprint overlap portion, and fingerprint collation can be performed reliably.
[0028]
In particular, as in this embodiment, a straight line passing through the center O of the fingerprint reading surface 9 is selected as the straight line L, and the finger 12 is placed so that the base 14 of the nail 13 overlaps the straight line L connecting the spacer protrusions 5 and 6. Can be extracted on the fingerprint reading surface 9, and many feature points in the vicinity of the center of the fingerprint pattern can be extracted.
[0029]
When the spacer protrusions 5 and 6 are not used as positioning indices, concave or convex portions can be formed on the left and right sides of the fingerprint reading surface 9 to form positioning indices, or the positioning indices can be configured by printing or sticking. The presence of the positioning indicator does not inhibit downsizing of the end end itself. If the end edge of the folding type, usually, since the spacer projections are present, since it also serves as a positioning indicator simply transfer this spacer projections 5 and 6 position of the registration indicia, the configuration is simple.
[0030]
FIG. 4 shows the configuration of the fingerprint collation function portion of this embodiment. The fingerprint collation function part includes a fingerprint sensor 8, a fingerprint feature information extraction unit 20, a reference fingerprint feature information storage unit 21, a fingerprint feature information collation unit 22, an information display unit 23, and a control unit 24 that performs overall control thereof. Is done.
[0031]
The fingerprint sensor 8 reads a fingerprint and outputs the image data. There are various reading methods. For example, in the semiconductor type, when a large number of electrodes are two-dimensionally arranged under the protective film forming the fingerprint reading surface, each electrode is applied to each electrode according to the fingerprint (unevenness) of the finger placed on the protective film. Utilizing the generation of electric charges, the electric charge of each electrode is converted into a voltage to obtain image data.
[0032]
The fingerprint feature information extraction unit 20 extracts the fingerprint feature information for verification from the image data acquired by the fingerprint sensor 8. The feature points include, for example, a center point (the center of a fingerprint pattern), a branch point (a branch point of a fingerprint convex pattern), an end point (a dead end point of a fingerprint convex pattern), and a delta (a fingerprint convex pattern is 3). There are points that gather from the direction). The fingerprint feature information is the type, orientation, coordinates from the center point, etc. of these feature points.
[0033]
Reference fingerprint characteristic information storage unit 21, which is formed by a memory, in which storing the reference fingerprint feature information about the owner of the terminus beforehand. The fingerprint feature information collation unit 22 compares and collates the fingerprint feature information for collation extracted by the fingerprint feature information extraction unit 20 with the reference fingerprint feature information stored in the reference fingerprint feature information storage unit 21. It is determined whether or not the fingerprint feature information satisfies a predetermined matching condition with respect to the reference fingerprint feature information, and when the matching condition is satisfied, the fingerprint feature information extracting unit 20 extracts It is recognized that the fingerprint characteristic information for verification is that of the owner. The predetermined matching condition is, for example, that the matching rate (matching degree) between the fingerprint feature information for verification and the reference fingerprint feature information is a certain value or more.
[0034]
The fingerprint collation operation is performed by the control unit 24 under overall control. That is, as shown in FIG. 5, when the fingerprint collation menu is started, the fingerprint sensor 8 is first initialized (S1), and then the process proceeds to the fingerprint input request step. As shown in FIG. The information display screen 11 is prompted to place the finger 12 on the fingerprint reading surface 9 so that the base 14 of the nail 13 overlaps the straight line L connecting the spacer protrusions 5 and 6 (S2).
[0035]
Thereafter, the process proceeds to a fingerprint image input step, and the fingerprint sensor 8 is made to read the fingerprint (S3). Based on the image data obtained here, the fingerprint feature information extraction unit 20 extracts the fingerprint feature information for verification, and the fingerprint feature information verification unit 22 extracts the fingerprint feature information for verification extracted by the fingerprint feature information extraction unit 20. And the reference fingerprint feature information stored in the reference fingerprint feature information storage unit 21 are compared and collated (S4). As a result of the collation (S5) of whether or not it is the user's fingerprint, if the user is confirmed, the fingerprint collation menu is terminated. If the user cannot be confirmed, the steps S2 to S5 are repeated until the predetermined number of trials is reached, and fingerprint reading and verification are repeated (S7). When the predetermined number of trials is reached, it is finally determined that the user cannot be confirmed, and the fingerprint collation menu is terminated (S8).
(Second Embodiment)
FIG. 6 shows a second embodiment of the present invention. In FIG. 6, parts corresponding to those in FIG. The present embodiment is characterized in that the planar shape of the spacer protrusions 5 and 6 is a triangle, and the corners face each other from the left and right via the fingerprint reading surface 9. If such planar spacer protrusions 5 and 6 are used, the position of the straight line L becomes clearer and positioning accuracy is improved.
(Third embodiment)
FIG. 7 shows a third embodiment of the present invention. In FIG. 7, parts corresponding to those in FIG. This embodiment relates to a end end having a microphone, at a position on the straight line L bisecting a fingerprint reading surface 9 of the fingerprint sensor 8 back and forth, and the position of the left and right of the fingerprint reading surface 9, Microphone sound collection holes 31 and 32 are provided so as to serve also as positioning indexes. Since the sound collecting holes 31 and 32 have a shape extending left and right, the position of the straight line L becomes clearer and positioning accuracy is improved.
[0036]
In this embodiment, a straight line passing through the center O of the fingerprint reading surface 9 is selected as the straight line L, and the finger 12 is placed on the fingerprint 12 so that the base 14 of the nail 13 overlaps the straight line L connecting the sound collecting holes 31 and 32. Place on reading surface 9. Thereby, since the center of the fingerprint pattern substantially overlaps the center O of the fingerprint reading surface 9, many feature points near the center of the fingerprint pattern can be extracted.
[0037]
The spacer protrusions 5 and 6 in this embodiment have a role of elastically contacting the opposite surface of the flip 2 when the flip 2 is closed and restricting further closing operation.
(Fourth embodiment)
8 to 10 show a fourth embodiment of the present invention. 8 to 10, parts corresponding to those in FIGS. 1 and 2 are denoted by the same reference numerals, and description thereof is omitted. This embodiment has basically the same configuration as the first embodiment, but differs in the following points. That is, in this embodiment, the keyboard surface 33 of the input key unit 7 located on the hinge portion 3 (bending center) side with respect to the fingerprint reading surface 9 is formed lower than the non-keyboard surface 34 and the non-keyboard surface. At the center of 34, a fingerprint reading surface 9 is formed.
[0038]
In this embodiment, since the keyboard surface 33 of the input key unit 7 is lower than the non-keyboard surface 34, the tip of the finger 12 facing the input key unit 7 at the time of fingerprint verification carelessly presses the key of the input key unit 7 No more pressing. Note that the fingerprint reading surface 9 may be the same height as the surrounding non-keyboard surface 34, but in particular, as shown in FIG. 10, the fingerprint reading surface 9 is recessed from the surrounding non-keyboard surface 34. If formed, the tip portion of the finger 12 facing the input key portion 7 at the time of fingerprint collation becomes a posture pushed up by the non-keyboard surface 34, so that the input key portion 7 is further pushed by the tip portion of the finger 12. You won't have to press the key inadvertently.
(Other embodiments)
The present invention is not limited to the first to fourth embodiments. For example, a rectangular shape (rectangular shape) is shown as the planar shape of the fingerprint reading surface 9, but a shape such as a rhombus or a circle may be used. In the above embodiment, the PDA has been described, but the present invention can also be applied to a mobile phone. Furthermore, the end end that can apply the present invention is not limited to the folding type.
[0039]
Hereinafter, main aspects of the present invention will be described as supplementary notes.
[0040]
(Appendix 1) An information terminal having a fingerprint collation function for reading and collating a fingerprint with a fingerprint sensor,
An information terminal in which a positioning index in the front-rear direction of the base of the nail is provided at a position on a straight line that divides the fingerprint reading surface of the fingerprint sensor into two parts in the front-rear direction and at left and right positions of the fingerprint reading surface.
[0041]
(Supplementary note 2) A straight line passing through the center of the fingerprint reading surface is selected as a straight line that divides the fingerprint reading surface of the fingerprint sensor into two in the front and the back, and the position on the straight line and the left and right positions of the fingerprint reading surface The information terminal according to appendix 1, wherein a positioning index in the front-rear direction of the base of the nail is provided.
[0042]
(Supplementary Note 3) The information terminal is a foldable information terminal in which spacer protrusions that regulate the interval between the opposed surfaces at the time of folding are formed on one opposed surface,
The spacer protrusions are provided at positions on a straight line that divides the fingerprint reading surface of the fingerprint sensor into two parts in the front and rear, and at the left and right positions of the fingerprint reading surface so as to also serve as the positioning index. The information terminal according to appendix 1 or 2, characterized by:
[0043]
(Supplementary note 4) The information terminal according to supplementary note 3, wherein a planar shape of the spacer protrusion is a shape in which corners are confronted from the left and right via the fingerprint reading surface.
[0044]
(Supplementary Note 5) The foldable information terminal has a spacer protrusion, an input key portion, and the fingerprint reading surface for restricting the distance between the opposed surfaces when folded on one opposed surface, and an information display screen on the other opposed surface An information terminal having
The input key portion is positioned closer to the folding center than the fingerprint reading surface, the keyboard surface of the input key portion is formed lower than the non-keyboard surface, and the fingerprint reading surface is at the center of the non-keyboard surface. The information terminal according to appendix 3 or 4, wherein: is formed.
[0045]
(Appendix 6) The information terminal is an information terminal having an information display screen,
Additional notes 3 to 5 are displayed on the information display screen for prompting the user to place a finger on the fingerprint reading surface so that the base of the nail overlaps the straight line connecting the spacer protrusions when reading the fingerprint. An information terminal according to any one of the above.
[0046]
(Appendix 7) The information terminal is an information terminal having a microphone,
Sound collecting holes of the microphone are provided at positions on a straight line that divides the fingerprint reading surface of the fingerprint sensor into two parts in the front and rear direction, and at left and right positions of the fingerprint reading surface so as to also serve as the positioning index. The information terminal according to appendix 1 or 2, characterized in that:
[0047]
(Additional remark 8) The information terminal of Additional remark 7 characterized by the sound collection hole of the said microphone having the shape extended left and right.
[0048]
【The invention's effect】
As described above , according to the first aspect of the present invention, since the already existing spacer protrusion is also used as a positioning index, the configuration is simplified.
[0050]
In the invention according to claim 2 , since the keyboard surface of the input key portion is lower than the non-keyboard surface, the tip of the finger facing the input key portion during fingerprint verification may inadvertently press the key of the input key portion. There is also an effect of disappearing.
[0051]
In the invention according to claim 3 , since the operator knows that the finger should be placed so that the base of the nail overlaps the straight line connecting the spacer projections from the display of the information display screen, the finger positioning is accurately performed without hesitation. There is also an effect that it can be repeated.
[Brief description of the drawings]
FIG. 1 is a plan view in an open state according to a first embodiment of the present invention.
FIG. 2 is a left side view in a closed state according to the first embodiment of the present invention.
FIG. 3 is an explanatory diagram of fingerprint reading in the first embodiment of the present invention.
FIG. 4 is a block diagram showing a configuration of a fingerprint collation function portion.
FIG. 5 is a flowchart showing an operation of fingerprint collation.
FIG. 6 is a plan view of the second embodiment of the present invention in an open state.
FIG. 7 is a plan view in an open state according to a third embodiment of the present invention.
FIG. 8 is a plan view showing an open state according to a fourth embodiment of the present invention.
FIG. 9 is a left side view in a closed state according to a fourth embodiment of the present invention.
FIG. 10 is a diagram illustrating a finger placement state according to the fourth exemplary embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Main body 2 Flip 3 Hinge part 5, 6 Spacer protrusion 7 Input key part 8 Fingerprint sensor 11 Information display screen 12 Finger 13 Nail 14 Base 20 Fingerprint feature information extraction part 21 Fingerprint feature information storage part 22 Fingerprint feature information collation part 23 Information display unit 24 Control unit 31, 32 Sound collecting hole 33 Keyboard surface 34 Non-keyboard surface

Claims (6)

A foldable terminal,
A fingerprint sensor having a fingerprint reading surface installed on one of the opposing surfaces by folding;
Spacer protrusions provided on each of the left and right sides of the fingerprint sensor for regulating the distance between the opposing surfaces when folded;
With
The spacer protrusion is provided at a position on a straight line that divides the fingerprint reading surface of the fingerprint sensor into two parts in the front-rear direction, and at the left and right positions of the fingerprint reading surface,
A terminal used as a positioning index in the front-rear direction of a base of a nail in reading by the fingerprint sensor. The terminal according to claim 1,
One of the opposing surfaces has the spacer protrusion, the input key portion, and the fingerprint reading surface,
Having an information display screen on the other of the opposing surfaces;
The input key part is located closer to the folding center than the fingerprint reading surface,
The keyboard surface of the input key portion is formed lower than a non-keyboard surface where the input key portion is not disposed,
The terminal having the fingerprint reading surface formed at the center of the non-keyboard surface. The terminal according to claim 2, wherein
The terminal according to claim 1, wherein the information display screen displays a prompt for placing a finger on the fingerprint reading surface so that a base of a nail overlaps a straight line connecting the spacer protrusions when reading the fingerprint. A microphone,
A fingerprint sensor having a fingerprint reading surface;
Sound collecting holes of the microphone provided on the left and right sides of the fingerprint sensor and used as finger positioning indices in reading of the fingerprint sensor;
Equipped with a,
The microphone sound collection hole is provided at a position on a straight line that divides the fingerprint reading surface of the fingerprint sensor into two on the front and rear sides, and on the left and right positions of the fingerprint reading surface,
A terminal used as a positioning index in the front-rear direction of a base of a nail in reading by the fingerprint sensor . The terminal according to any one of claims 1 to 4, wherein
The terminal, wherein the spacer protrusion or the sound collecting hole is arranged symmetrically with respect to the fingerprint reading surface . The terminal according to any one of claims 1 to 3 ,
The spacer protrusion has a triangular shape in plan, and the left and right corners of the triangle face each other .

Images