JP2005192033A - Portable terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable terminal which can be provided with a plurality of functions by sharing a rotary body. <P>SOLUTION: The portable terminal comprises: the rotary body 4; a rotary encoder 11 for detecting rotational angular velocity of the rotary body; a light source 12; an optical sensor 15 for capturing an image; and a display means for displaying various operating states. The portable terminal is characterized in that it operates as a scroll function for vertically moving a cursor or display character displayed on the display means when the rotary body 4 is rotated and operates as a fingerprint detecting function for capturing an image of fingerprints with which the rotary body 4 is brought into contact by starting the light source 12 and the optical sensor 15 when the rotary body 4 is rotated after selecting a fingerprint detection mode. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a mobile terminal, and more particularly to a mobile terminal having at least a scroll function and a fingerprint detection function.

  In a portable terminal such as a cellular phone, an operable function is displayed as a menu, and a desired function is selected from the menu. To select, select the menu key button, press the up key button or the down key button to slide the various function displays up and down, select the desired function, and decide. This is how to press a key button.

  In order to make the function selection easier to operate, it is convenient to use a scroll function for scrolling a screen displaying various functions.

  The scroll function includes a rotating body that rotates about a rotating shaft, a rotating support member that rotatably supports the rotating body on the rotating shaft, and a rotation support member that is disposed on the rotating support member and detects the rotation of the rotating body. A rotary switch, a rotation guide member on which the rotation body is supported, a movement guide member disposed so as to be vertically movable in the axial direction of the rotation body, and a rotation body disposed on both sides of the movement guide member in the linear movement direction. And a pair of tact switches that detect a linear motion of the rotating body when the rotation support member is pressed by the linear movement of the rotation support member.

  A recording / reproducing apparatus (having a recording / reproducing unit for a magneto-optical disk cartridge, a reproducing unit for an optical disk, and a recording / reproducing unit for a tape cassette) has been proposed as an electronic device that uses this scroll function for an operation unit (for example, Patent Literature 1). 1).

  In the near future, when making payments such as a card from a mobile terminal, it may be necessary to perform personal authentication to determine whether the person who uses the terminal itself is the owner of the terminal. It is expected enough. A fingerprint detection function for personal authentication is required.

  As a fingerprint detection function, a rotatable rotating body can be moved by using a contact medium with the subject's finger, and the portion of the subject's finger that is in contact can be moved, and the fingerprint input device that inputs the entire fingerprint by rotational scanning through the imaging device (See, for example, Patent Document 2).

  In the near future, it will be more convenient if the mobile terminal itself can capture images and send them to the outside.

  As an image capturing function, an image reading apparatus that optically reads an image of a document by moving a roller (rotating body) on the screen of the document while gripping the casing is proposed (for example, see Patent Document 3). .

JP 2002-63834 A

JP-A-8-266331 JP 2000-22902 A

  The scroll function itself is known from Patent Document 1, the fingerprint detection function itself is known from Patent Document 2, and the image capture function itself is known from Patent Document 3, but only a single mode of use is described.

  Since the portable terminal targeted by the present invention is required to be miniaturized and the size of the outer shape is almost determined, it is difficult to separately implement the above functions for each function.

  An object of the present invention is to provide a mobile terminal capable of sharing a rotating body and having a plurality of functions.

  According to the first aspect of the present invention, there is provided a portable terminal comprising: a rotating body; a rotary encoder for detecting a rotating direction and a rotating angular velocity of the rotating body; a light source; an optical sensor for capturing an image; A display device for displaying the display, and when the rotating body is rotated, the display device operates as a scroll function for moving a display cursor or display character up and down, and selects a fingerprint detection mode. Thereafter, when the rotating body is rotated, the light source and the optical sensor are activated to operate as a fingerprint detection function for capturing an image of a fingerprint in contact with the rotating body. As a result, the rotating body can be shared by the scroll switch function and the fingerprint detection function, and the mobile terminal can be reduced in size and price.

  According to a second aspect of the present invention, in the portable terminal according to the first aspect, when the image capture mode is selected, the light source and the optical sensor are activated to contact the rotating body. It operates as an image capturing function for capturing an image to be captured. Thereby, the rotating body can also be used as an image capturing function.

  According to a third aspect of the present invention, in the portable terminal according to the first or second aspect, the rotating body, the rotary encoder, the light source, and the optical sensor are arranged in a rotatable rotating casing. And Thereby, operability is improved.

  A portable terminal according to a fourth aspect of the present invention is the portable terminal according to any one of the first to third aspects, wherein the switch that detects that the rotating body is pressed and the rotation of the first rotating housing. Detection means for detecting a position is provided, and the detection of the switch is switched between valid and invalid according to the rotational position detected from the detection means. As a result, the scroll switch function can function as an enter key button, and can be disabled for other functions.

  A portable terminal according to a fifth aspect of the present invention is the portable terminal according to any one of the first to fourth aspects, wherein a multicolor illuminant is used as the light source, and the illumination color is switched by the functions. And As a result, white that is close to natural light when using the image capture function, and blue that can be expected to improve the fingerprint recognition rate, taking into account light transmission and scattering inside the finger when using the fingerprint detection function. Thus, the emission color can be switched.

  A portable terminal according to a sixth aspect of the present invention is the portable terminal according to any one of the first to fifth aspects, wherein the rotating body is made of a material having a high light transmittance, and the light source is transmitted through the rotating body. The image is captured by reflecting light from the image of the fingerprint in contact with the rotating body or the image to be captured and captured by the optical sensor. Thereby, further space-saving size reduction by the deletion of a slit is attained.

  ADVANTAGE OF THE INVENTION According to this invention, the portable terminal which can share a rotary body and can be provided with a some function can be obtained.

  Hereinafter, embodiments of a portable terminal according to the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 shows, as an embodiment of a mobile terminal according to the present invention, a foldable mobile phone (hereinafter referred to as a telephone) 1, (a) case open state, (b) case closed state, and (c) case closed state. 2 shows the appearance in a state where the image capturing function is possible. Hereinafter, each function will be described with reference to FIG.

  A plurality of key buttons 6a such as an off-hook key, an on-hook key, and a numeric keypad shown in FIG. 1A are arranged on the inner surface of the main body case 2, and a microphone 8 for transmission is built in the lower end portion. ing. Further, on the inner side surface of the lid case 3, a main display portion 5a and a receiver 7 for receiving a voice are disposed. The upper end portion of the main body case 2 and the lower end portion of the lid case 3 are connected to each other via a hinge portion 9. Furthermore, the rotating body 4 shared in the embodiment of the present invention is configured such that a part of the rotating body 4 is a hinge rotating section in the hinge rotating section 13 which is a first rotating casing coaxially with the hinge section 9. It is mounted in a state exposed from 13.

  Next, in the case closed state of FIGS. 1B and 1C, the rotating body 4 in the hinge rotating portion 13, the sub display portion 5b, the back button 6b, the illumination for incoming / outgoing calls 22, the speaker 10, etc. are arranged. Yes.

  Here, the position of the exposed portion of the rotating body 4 is changed by the rotation of the hinge rotating portion 13, but in the case open state, the rotating body 4 is fixed in a state of being exposed in the inner side surface direction of the main body case 2. In the (a) state and the case closed state, the state of FIG. 1 (b) with the position of the rotating body 4 in FIG. 1 (a) and the state of FIG. 1 (c) in which the rotating body 4 is exposed in the upper end A direction of the telephone. There are three types of states. Functions that can be realized are set according to those states. In FIG. 1A, the scroll function and the fingerprint detection function are stopped. In FIG. 1B, the functions are stopped, and the malfunction of the rotating body 4 is prevented. ) Enables the image capture function.

  Next, details of the arrangement and operation of the rotating body and the surrounding parts will be described with reference to an enlarged perspective view of the internal parts shown in FIG.

  First, component arrangement will be described. Inside the hinge rotating part 13 that can rotate around the hinge shaft 25, the rotating body 4, shaft support parts 16 a and 16 b for supporting the rotating shaft 21 of the rotating body 4, and the rotating direction and rotation of the rotating body 4 The rotary encoder 11 for detecting the angular velocity, the light source 12 for illuminating the object 23 or the finger 24, the slit 18 serving as a passage for the irradiated light and the reflected light, and the reflected light are collected. A lens 14 for capturing the image, an optical sensor 15 for capturing an image, and a tact switch 17 for detecting that the rotating body 4 is pushed in the C direction. , Rotate together while maintaining their positional relationship. Further, a rotational position detection unit 31 for detecting the rotational position of the hinge rotation unit 13 via the hinge shaft 25 is disposed. Here, the light source 12, the optical sensor 15, and the tact switch 17 are fixed on the substrate 26 in the hinge.

  Next, a case where the rotating body 4 is used as a scroll function in function selection of the telephone 1 will be described. In the embodiment of the present invention, as shown in FIG. 3, in the open state of the lid case 3, the operator rotates the rotary body 4 up and down, and the rotary encoder 11 ( The scroll function is detected by detecting in FIG. 2), and the pressing operation of the rotating body 4 is detected by the tact switch 17 (FIG. 2) and used as a decision switch. A specific description will be given below in the case open state of FIG.

  For example, when the menu screen is displayed and the menu is selected, the menu screen is shifted by pushing the rotating body 4 toward the back surface of the main body case 2, and the menu displayed on the main display portion 5a is displayed. By rotating the rotating body 4 in the upward direction A or the downward direction B, the cursor or the displayed menu itself can be scrolled in accordance with the rotational direction of the rotating body 4. The operator can select the desired menu by pressing the rotating body 4 in a state where the cursor has been moved to the desired menu or menu position. In addition, since the rotating body 4 is mounted on the hinge rotating portion 13 between the hinge portions 9 so as to face the inner surface, the operator holds the hand on the key button 6a and the rotating body 4 necessary for the operation. It is possible to perform the pressing operation and the scroll operation without changing.

  Next, an embodiment in which the rotating body 4 of the present invention is used as a fingerprint detection function will be described. When used as a fingerprint detection function, it is realized by activating the light source 12 and the optical sensor 15, illuminating the target finger, and reading the reflected light by the optical sensor 15. In this case, the rotating body 4 functions as a traveling roller, contributing to stable image capture.

  A specific description will be given with reference to FIG. When the fingerprint is detected, the case is in the open state as described with reference to FIG.

  The transition to fingerprint detection is forcibly detected by the method of selecting and setting fingerprint detection by the scroll function of the rotating body 4 and the request from the running application in the case 1 of the telephone 1 in FIG. However, the fingerprint detection operation is the same for either method.

  As the fingerprint detection operation, after shifting to the fingerprint detection described above, the tip of the finger 24 whose fingerprint is to be detected is placed on the rotating body 4 in the case open state of the telephone 1 in FIG. When the finger 24 is moved in the A direction so as to roll, the rotation direction of the rotating body 4 and the angular velocity of the rotating body 4 are detected by the rotary encoder 11 (FIG. 2), thereby detecting the start of rotation of the rotating body 4 and the detection of fingerprints. Is done. The end of the fingerprint detection is determined by detecting the end of the rotation of the rotating body 4 or exceeding a preset detection operation time.

  Next, an embodiment in which the rotating body 4 of the present invention is used as an image capturing function will be described. When used as an image capture function, the light source 12 and the optical sensor 15 are activated by pressing, for example, the image capture button of the back button 6b in the case closed state of the telephone 1 in FIG. This is realized by illuminating the object and reading the reflected light from the object with the optical sensor 15. In this case, the rotating body 4 functions as a traveling roller, contributing to stable image capture.

  A specific description will be given with reference to FIG. FIG. 5 shows a use state as an image capturing function. This state is the case closed state and the state described with reference to FIG. 1C with the rotating body 4 facing downward. It is assumed that the telephone 1 is positioned vertically with respect to the object 23 for capturing an image.

  In this state, the rotating body 4 is brought into contact with the object 23, and the telephone 1 is moved in the D direction so that the rotating body 4 traces the image to be captured. It is possible to capture an image. At this time, the rotation direction and rotation angular velocity of the rotating body 4 are detected by the rotary encoder 11 (FIG. 2) to detect the start of the rotation of the rotating body 4, and the image capturing detection ends. It is determined by detecting the end of the rotation of 4 or exceeding the preset detection operation time.

  At this time, it is also possible to display the captured image state in real time on the sub-display unit 5b, and to perform an image capturing operation while confirming the captured image.

  Further, as a method for shifting to the image capturing, in addition to the method of shifting by pressing the back button 6b assigned to the transition to the image capturing function, the rotation described later for detecting the rotational position of the hinge rotating unit 13 is performed. By providing the hinge unit 9 with the position detection unit, it is possible to automatically determine whether or not the image capturing mode has been shifted or terminated at the rotational position of the hinge rotation unit 13.

  Next, the positional relationship between the opened / closed state of the case and the hinge rotating portion 13 will be described with reference to FIGS.

  FIG. 5 shows a state in which the rotating body 4 is retracted from the lid case 3 and prevents a malfunction that touches the rotating body 4 inadvertently.

  5 (a1) shows a view from the oblique direction of FIG. 1 (b), and FIG. 5 (a2) is a perspective view of the positional relationship among the lid case 3, the hinge part 9, and the hinge rotating part 13. The state is shown, and the details of the inside are also shown in FIGS. 5 (b1) and (ab). This state will be described with reference to FIG. 5 (b 1). In the hinge portion 9, there are a large gear 27 that rotates by opening and closing the lid case 3, a small gear 28 that rotates in contact with the large gear 27, and a small gear 28. Is provided with a stopper 29 that moves up and down by rotation. Further, in the hinge rotating part 13, the rotating body 4 is fixed so as to be partially exposed, and the hinge rotating part 13 is connected to the hinge 9 by a hinge shaft 25 located on the same axis as the hinge, and the hinge rotating part 13 rotates around the hinge shaft 25. In addition, a rotating body protrusion 30 is disposed outside the hinge rotating portion 13.

  FIG. 6 shows the state of the scroll function or the fingerprint detection function. FIG. 6 (a1) shows an oblique view of FIG. 1 (b), and the state transition from FIG. 5 (a1) to FIG. 6 (a1), which is a scroll function or fingerprint detection function, is a lid. Occurs when Case 3 is closed → opened. FIG. 6 (a2) shows a state where the positional relationship among the lid case 3, the hinge part 9, and the hinge rotating part 13 is seen through, and FIG. 6 (b1) and FIG.

  When the lid case 3 is opened from FIGS. 5 (b1) and 5 (b2) and the process proceeds to FIGS. 6 (b1) and 6 (b2), the state is changed by the position of the stopper 29 that moves upward by the rotation of the gear. By adopting a structure in which the position of the stopper 29 in the opened state of the lid case 3 is in contact with the rotating body protrusion 30, the hinge rotating portion 13 is fixed at this position in the opened state of the lid case 3. This state is a state in which the scroll function and the fingerprint detection function are effective. By adopting a configuration in which the rotation protrusion 30 is stopped by hitting the stopper 29 as described above, the rotation of the hinge rotation unit 13 can be restricted and the rotating body 4 can be stably held.

  FIG. 7 shows the state of the image reading function. FIG. 7 (a1) shows a view from the oblique direction of FIG. 1 (b), similar to FIG. 5 (a1). FIG. 7 (a1) shows the image reading function to FIG. 7 (a1). The state transition occurs when the operator rotates the hinge rotating unit 13 with a finger. FIG. 7 (a2) shows a state in which the positional relationship among the lid case 3, the hinge portion 9, and the hinge rotating portion 13 is seen through, and FIG. 7 (b1) and FIG.

  When the hinge rotating part 13 of FIGS. 4 (a1) and (a2) is rotated in the direction A of FIG. 4 (b2), the rotating body protrusion 30 rotates together with the hinge rotating part 13 to prevent rotation at the position of the stopper 29. Then, the operation stops and the state shown in FIGS. 7 (a1) and (a2) is obtained. This state is a state where the image capturing function is effective. By adopting a configuration in which the rotation protrusion 30 is stopped by hitting the stopper 29 as described above, the rotation of the hinge rotation unit 13 can be restricted and the rotating body 4 can be stably held. Further, returning to the original FIG. 5 (a1) (a2) or FIG. 5 (b1) (b2) from this state is possible when the operator rotates the hinge rotating portion 13 in the B direction with a finger.

  Similarly, the state transition from FIG. 7A1 to FIG. 6A1 occurs when the lid case 3 is closed to open. When the lid case 3 is opened from FIGS. 7 (b1) and 7 (b2) and the process proceeds to FIGS. 6 (b1) and 6 (b2), the stopper 29 moves upward due to the rotation of the gear. In FIGS. 7 (a1) and (a2), The stopper 29 and the rotating body protrusion 30 are in contact with each other, and as the stopper 29 moves upward, the rotating body protrusion 30 moves upward. As a result, the hinge rotating portion 13 is rotated and the state shown in FIG. Migrate to Thus, even when the rotating body 4 is exposed in the direction of the upper end A of the telephone in the image capturing function state, the rotating body 4 is always attached to the main body case 2 only when the lid case 3 is opened. The scroll function or the fingerprint detection function is in an effective state in the state exposed in the inner surface direction.

  FIG. 8 is a circuit block diagram provided with a scroll function, a fingerprint detection function, and an image capture function in the embodiment of the portable terminal according to the present invention. In FIG. 8, the same components as those in FIGS. 1 and 2 are denoted by the same reference numerals.

  At the time of the operation as the scroll function, the rotary encoder 11 detects the rotation direction and each speed of rotation of the rotating body 4, notifies the detection information to the control unit 71, and displays it on the main display unit 5a which is the display unit 5. The menu can be scrolled. Further, the pressing operation of the rotating body 4 is detected by the tact switch 17 and operates as a decision switch.

  In the operation as the fingerprint detection function and the image capture function, the control unit 71 detects the fingerprint of the portable terminal 1 or captures the image by operating the key button 6a, the back button 6b, the rotating body 4 as the scroll switch function, or the like. Set to, and transition to a fingerprint or image capture start waiting state. When rotation of the rotating body 4 occurs in this state, the control unit 71 receives the rotation direction and rotation angular velocity information from the rotary encoder 11, and when it detects that the value exceeds the set value, the control unit 71 controls the light source 12 Control of image capture by the light emission and optical sensor 15 is started, and a fingerprint or image capture operation is started. Then, when the rotation operation of the rotator 4 is completed or when the control unit 71 determines that the time for the capture operation exceeds the specified value, the image capture operation is terminated.

  Thereafter, the control unit 71 determines the moving distance of the object 23 or the finger 24 from which the image is captured from the operation time and the rotational angular velocity of the rotating body 4, corrects the captured image, and performs fingerprint authentication processing or the display unit 5. Displaying images, saving images, etc.

  Here, the rotating body 4, the rotary encoder 11, the light source 12, the optical sensor 15, and the tact switch 17 are arranged in the hinge rotating unit 13 that is the first rotating housing, and the mutual positional relationship is maintained. It is possible to change the reading direction of the image. Further, by providing a rotation position detection unit 31 for detecting the rotation position of the hinge rotation unit 13, the operation of the tact switch 17 is made invalid in the use state at the time of the image reading function as shown in FIG. Yes.

  FIG. 9 is a diagram showing an example of the operation flow of the circuit block in the embodiment of the portable terminal according to the present invention of FIG.

  In step 901, for example, by pressing the power button of the back button 6b in FIG. 1B, the telephone 1 enters an activated state (standby state). In step 902, the control unit 71 determines whether the cover case 3 is in the open state by looking at the state of a cover opening / closing detection switch (not shown). If the case is open, the control unit 71 determines in step 903 whether fingerprint detection is selected. If fingerprint detection is not selected, the scroll function operates in step 904. If fingerprint detection is selected in step 903, the fingerprint detection function operates in step 905.

  If it is determined in step 902 that the lid case 3 is not in the open state, the control unit 71 determines in step 906 whether image capture is selected. If image capture is not selected, the determination in step 906 is repeated. If image capture is selected, the image capture function operates in step 907.

  FIG. 10 is a diagram showing an example of a detailed operation flow of the scroll function in step 904 in FIG.

  In step 1001, the scroll function starts. In step 1002, the control unit 71 determines whether or not the lid case 3 is in the open state by looking at the state of the lid opening / closing detection switch (not shown). If the case is not open, the process returns to step 901 in FIG. 9. If the case is open, the controller 71 determines whether the rotary body 4 is rotating or not in step 1003 by looking at the state of the rotary encoder 11. If the rotating body 4 is not rotated, the controller 71 determines whether or not the rotating body 4 is pushed in step 1004 by looking at the state where the tact switch 17 is pressed. If the rotary body 4 has been pushed, a display item is selected in step 1005. In step 1006, the control unit 71 determines whether fingerprint detection is selected. If fingerprint detection is not selected, the process returns to step 1002, and if fingerprint detection is selected, the process proceeds to step 905 in FIG.

  If there is rotation of the rotating body 4 in step 1003, the rotating direction and rotational angular velocity of the rotating body 4 are detected by the rotary encoder 11 in step 1007, and the control unit 71 scrolls the display on the main display unit 5a in step 1008. The scroll feed rate is varied at a speed corresponding to the rotational speed of the rotating body 4. Then, the process returns to step 1002.

  In step 1108, the scroll direction and the scroll feed rate displayed on the main display unit 5a are varied at a speed corresponding to the rotation speed of the rotating body 4, so that the operator varies the operation speed according to the type and situation of selection. In this way, a more sensory and quick operation becomes possible.

  FIG. 11 is a diagram showing an example of a detailed operation flow of the fingerprint detection function in step 905 in FIG.

  In step 1101, the fingerprint detection function starts. In step 1102, the control unit 71 determines whether or not the rotating body 4 is rotating by looking at the state of the rotary encoder 11. If the rotating body 4 has been rotated, fingerprint detection is started in step 1103. That is, the light source 12 and the optical sensor 15 are activated, the finger 24 is irradiated with the light source 12, the reflected light is detected by the optical sensor 15, and the fingerprint image detected by the optical sensor 15 and the rotation of the rotating body 4 detected by the rotary encoder 11 are detected. The angular velocity information is taken into the control unit 71.

  In step 1104, the control unit 71 determines whether or not the rotating body 4 is rotating by looking at the state of the rotary encoder 11. If the rotating body 4 has been rotated, the process proceeds to step 1106. If the rotating body 4 has not been rotated, the control unit 71 determines in step 1105 whether the detection regulation time has been exceeded. If there is no excess of the specified detection time, the process returns to step 1104. If there is an excess of the specified detection time, the process proceeds to step 1106.

  In step 1106, the control unit 71 stops the fingerprint detection. Next, in step 1107, the fingerprint image and the rotational angular velocity information of the rotating body 4 are stored in the control unit 71. Next, in step 1108, the control unit 71 determines whether or not to continue fingerprint detection. If the fingerprint detection is to be continued, the process returns to step 1102. If the fingerprint detection is not to be continued, the control unit 71 terminates the fingerprint detection function in step 1109, and the process returns to step 901 in FIG.

  If it is determined in step 1102 that the rotating body 4 has not rotated, the control unit 71 determines in step 1110 whether the specified detection time has been exceeded. If there is no excess of the specified detection time, the process returns to step 1102, and if there is an excess of the specified detection time, error processing such as display is performed in step 1111. In step 1109, the control unit 71 terminates the fingerprint detection function. Returning to step 901 of FIG.

  Since the fingerprint image and the rotational angular velocity information of the rotating body 4 are stored in the control unit 71 in step 1107, the distortion or the like of the fingerprint image due to variations in moving speed at the time of fingerprint detection is corrected using the rotational angular velocity information of the rotating body 4. Therefore, it is possible to store an accurate fingerprint image, and to perform an accurate fingerprint authentication process at a later stage.

  FIG. 12 is a diagram showing an example of a detailed operation flow of the image capturing function in step 907 in FIG.

  In step 1201, the image capture function starts. In step 1202, the control unit 71 determines whether or not the rotating body 4 is rotating by looking at the state of the rotary encoder 11. If the rotating body 4 has been rotated, image capture is started in step 1103. That is, the light source 12 and the optical sensor 15 are activated, the object 23 is irradiated with the light source 12, the reflected light is detected by the optical sensor 15, and the image detected by the optical sensor 15 and the rotation of the rotating body 4 detected by the rotary encoder 11 are detected. The angular velocity information is taken into the control unit 71.

  In step 1204, the control unit 71 determines whether or not the rotating body 4 is rotating by looking at the state of the rotary encoder 11. If the rotation of the rotating body 4 is present, the process proceeds to step 1206. If the rotation of the rotating body 4 is not present, the control unit 71 determines in step 1205 whether the specified detection time is exceeded. If there is no excess of the specified detection time, the process returns to step 1204. If there is an excess of the specified detection time, the process proceeds to step 1206.

  In step 1206, the control unit 71 stops the image capture, and in step 1207, the captured image and the rotational angular velocity information of the rotating body 4 are stored in the control unit 71. Next, in step 1208, the control unit 71 determines whether to continue image capture. If the image capture is to be continued, the process returns to step 1202. If the image capture is not to be continued, the control unit 71 terminates the image capture function in step 1209, and the process returns to step 901 in FIG.

  If it is determined in step 1202 that the rotating body 4 has not been rotated, the controller 71 determines in step 1210 whether or not the specified detection time has been exceeded. If there is no excess of the specified detection time, the process returns to step 1202, and if there is an excess of the specified detection time, error processing such as display is performed in step 1211, and the control unit 71 ends the fingerprint detection function in step 1209. Returning to step 901 of FIG.

  In step 1207, the captured image and the rotational angular velocity information of the rotating body 4 are stored by the control unit 71. Therefore, the rotational angular velocity information of the rotating body 4 is used to correct image distortion due to variations in moving speed at the time of capturing the image. Processing is possible, and accurate images can be stored.

  Next, with reference to FIG. 13, details of the arrangement of the rotating body and peripheral components and the operation will be described with reference to FIG. explain. In FIG. 13, the material and shape of the rotator 4 are selected by selecting a material having a high light transmittance or a hollow shape to enhance the light transmission, so that the rotator 4 can be directly passed without passing through the slit 13 of FIG. This is an example of capturing an image that has passed through.

  With this configuration, it is possible to save space by deleting the slit 13. Furthermore, in the fingerprint detection function, a more detailed fingerprint image can be detected by taking a fingerprint image in close contact with the rotating body 4. In the case of FIG. 13, the light G from the light source 12 passes through the rotator 4 and is applied to the finger 24 as the object, and the reflected light H from the finger 24 is received by the lens 14 and the optical sensor 15 through the rotator 4. Is possible. Furthermore, if a small product such as the light source 12, the optical sensor 15, and the lens 14 can be selected and disposed in the hollow rotating body 4, further space saving can be achieved.

  Further, by using a multicolor illuminant such as an LED in the light source 12, the emission color can be varied depending on the image capture target, thereby enabling more accurate image capture or fingerprint detection. For example, the image capture function emits white light close to natural light, and the fingerprint detection function considers light transmission and scattering inside the finger, and the blue light that can be expected to improve the fingerprint recognition rate. It is possible to switch colors and improve the accuracy of image capture.

  Further, by making the light source 12 into a multicolor light emitter, the illumination color irradiated to the rotating body 4 and / or the hinge rotating unit 13 can be changed, so that it is used as an illumination at present, for outgoing and incoming calls in FIG. The illumination 22 can be replaced, and more space and cost can be reduced.

As an embodiment of a portable terminal according to the present invention, an external appearance of a foldable mobile phone in which (a) the case is open, (b) is the case closed, and (c) is the case closed state in which an image capturing function is possible. Is shown. It is a perspective view which expands the Example of a structure of the hinge rotation part which is a rotation housing | casing of FIG. 1, and shows an internal component. It is a figure explaining the case where it uses as a scroll function or a fingerprint detection function. It is a figure explaining the case where it uses as the time of an image taking-in function. It is a figure which shows the state which prevents the malfunctioning which touches a rotating body carelessly with the structure where the rotating body retracted from the cover body case. It is a figure which shows the state of a scroll function or a fingerprint detection function. It is a figure which shows the state of an image reading function. It is a circuit block diagram provided with the scroll function, the fingerprint detection function, and the image capture function in embodiment of the portable terminal by this invention. It is a figure which shows the example of the operation | movement flow of the circuit block in embodiment of the portable terminal by this invention of FIG. It is a figure which shows the example of the detailed operation | movement flow of the scroll function in step 904 in FIG. It is a figure which shows the example of the detailed operation | movement flow of the fingerprint detection function in step 905 in FIG. It is a figure which shows the example of the detailed operation | movement flow of the image taking-in function in step 907 in FIG. It is a figure which shows the other structural example of the hinge rotation part which is a rotation housing | casing in embodiment of the portable terminal by this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Telephone, 2 ... Main body case, 3 ... Cover body case, 4 ... Rotating body, 5 ... Display part, 5a ... Main display part, 5b ... Sub display part, 6a ... Key button, 6b ... Back button, 7 ... Receiver , 8 ... Microphone, 9 ... Hinge part, 10 ... Speaker, 11 ... Rotary encoder, 12 ... Light source, 13 ... Hinge rotation part, 14 ... Lens, 15 ... Optical sensor, 16a, 16b ... Shaft support part, 17 ... Tact switch , 18 ... slit, 21 ... rotating shaft, 22 ... illumination for incoming / outgoing calls, 23 ... object, 24 ... finger, 25 ... hinge shaft, 26 ... substrate in hinge, 27 ... large gear, 28 ... small gear, 29 ... stopper, 30 ... Rotating body protrusion, 31 ... Rotation position detection part, 71 ... Control part.

Claims (6)

  A rotating body, a rotary encoder for detecting the rotational direction and the rotational angular velocity of the rotating body 4 of the rotating body, a light source, an optical sensor for capturing an image, and display means for displaying various operation states are provided. When the rotating body is rotated, the portable terminal operates as a scroll function for moving a display cursor or display character in the vertical direction on the display unit, and after the fingerprint detection mode is selected, the rotating body is rotated. A portable terminal that operates as a fingerprint detection function for activating the light source and the optical sensor to capture an image of a fingerprint in contact with the rotating body.   2. The portable terminal according to claim 1, wherein when an image capture mode is selected, the light source and the optical sensor are activated to operate as an image capture function for capturing an image of an image capture target in contact with the rotating body. A portable terminal characterized by that.   3. The portable terminal according to claim 1, wherein the rotating body, the rotary encoder, the light source, and the optical sensor are arranged in a rotatable casing.   The portable terminal according to any one of claims 1 to 3, further comprising: a switch that detects that the rotating body is pressed; and a detecting unit that detects a rotational position of the rotating housing. A portable terminal characterized in that the detection of the switch is switched between valid and invalid depending on the rotated position.   The portable terminal according to any one of claims 1 to 4, wherein a multicolor light emitter is used as the light source, and the illumination color is switched by each function. 6. The portable terminal according to claim 1, wherein the rotating body is made of a material having a high light transmittance, and light from the light source that has passed through the rotating body is in contact with the rotating body. A portable terminal that captures an image by reflecting from a fingerprint image or the image to be captured and captured by the optical sensor.

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