JP2004236137A - Mobile terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mobile terminal with an imaging device, which realizes automatic switchover control of the imaging modes and simplifies the imaging operations. <P>SOLUTION: A mobile phone 1 is equipped with an imaging device 16 which has an image sensor 20 with a photoelectric converting part 21 and a lens part 32 to form a subject image in the photoelectric converting part 21. The mobile phone 1 comprises: a circular member 110 which has an optical member for proximity imaging 100 enabling proximity imaging by the imaging device 16 and is movable around the imaging device 16 with a rotating shaft 111 as the center; a circular member rotating mechanism which positions the optical member for proximity imaging 100 on the optical axis of the imaging device 16 by rotating the circular member 110; and a CPU 11a which automatically switches from a normal imaging mode to a proximity imaging mode by controlling driving of the circular member rotating mechanism based on image data obtained by the imaging device 16. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a mobile terminal.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, various portable information communication terminal devices (hereinafter, referred to as “portable terminals”) such as PDAs, mobile phones, and PHS® having an information communication function and a personal information management function have been proposed and put into practical use. In recent years, a portable terminal having a function of capturing an image of a predetermined subject existing outside by using a mounted imaging device has been proposed. For example, there has been proposed a mobile terminal capable of performing imaging by switching between a normal imaging mode for imaging a predetermined subject and a close-up imaging mode for imaging a subject at a close position (for example, see Patent Document 1).
[0003]
[Patent Document 1]
JP-A-2002-262164
[Problems to be solved by the invention]
However, when the mobile terminal described in Patent Literature 1 is used, it is necessary for the user to determine whether to be in the normal imaging mode or the close-up imaging mode and to perform the switching operation. was there. In particular, the mobile terminal described in Patent Literature 1 has a structure in which the imaging mode is switched in association with the rotation of the imaging device. Therefore, every time the imaging mode is switched, the user has to rotate the imaging device with a finger. It was troublesome.
[0005]
An object of the present invention is to realize automatic switching control of an imaging mode in a portable terminal including an imaging device, and to simplify an operation at the time of imaging.
[0006]
[Means for Solving the Problems]
In order to solve the above problems, the invention described in claim 1 is
An imaging device having a photoelectric conversion unit, and a lens unit that forms a subject image on the photoelectric conversion unit, a mobile terminal including an imaging device having:
An annular member having an optical member for close-up imaging that enables close-up imaging by the imaging device, and being rotatable around the imaging device around a rotation axis arranged substantially perpendicular to the optical axis of the imaging device; When,
An annular member rotating mechanism for rotating the annular member around the rotation axis to position the proximity imaging optical member on the optical axis of the imaging device;
A control unit that automatically switches from a normal imaging mode for performing normal imaging to a close-up imaging mode for performing close-up imaging by driving-controlling the annular member rotation mechanism based on image data acquired by the imaging device,
It is characterized by having.
[0007]
According to the first aspect of the present invention, the control unit drives and controls the annular member rotating mechanism based on the image data acquired by the imaging apparatus, and performs the close-up imaging for performing the close-up imaging from the normal imaging mode for performing the normal imaging. You can switch to the mode automatically. Therefore, when switching the imaging mode, there is no need for the user to judge whether or not the imaging mode is appropriate or to perform the switching operation with fingers. Further, it is not necessary to rotate the imaging device with a finger when switching the imaging mode. As a result, the operation at the time of imaging can be greatly simplified.
[0008]
According to a second aspect of the present invention, in the portable terminal according to the first aspect,
The annular member rotation mechanism,
A first tooth portion provided on an inner peripheral surface of the annular member;
An internal gear having a second tooth engaged with the first tooth;
A motor driven by the control means to rotate the internal gear,
It is characterized by being comprised from.
[0009]
According to the invention described in claim 2, the first gear provided on the inner peripheral surface of the annular member, the internal gear having the second gear engaged with the first gear, and the internal gear are rotated. An annular member rotating mechanism is constituted by the motor to be rotated, and the annular member provided with the first tooth portion can be rotated by rotating the internal gear by the motor. Therefore, the rotation of the annular member and the accompanying switching to the close-up imaging can be realized with a very simple mechanism.
[0010]
The invention according to claim 3 is the portable terminal according to claim 1 or 2,
The proximity imaging optical member,
The imaging device may be a lens for adjusting a focal length, or a diaphragm plate for adjusting an amount of light incident on the imaging device.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the present embodiment, as an example of a mobile terminal to which the present invention is applied, a mobile phone with an imaging device (hereinafter, simply referred to as a “mobile phone”) will be described.
[0012]
First, the mechanical configuration of the mobile phone 1 according to the present embodiment will be described with reference to FIGS. FIG. 1 is a diagram illustrating an external configuration of the mobile phone 1. FIG. 2 is a cross-sectional view taken along the line II-II in FIG. 1C and is for explaining the configuration of the imaging device 16 provided in the mobile phone 1. FIG. 3 is a perspective view for explaining an annular member rotating mechanism provided in the mobile phone 1. FIG. 4 is a plan view of the annular member rotating mechanism shown in FIG. ).
[0013]
As shown in FIG. 1, a mobile phone 1 according to the present embodiment is of a foldable type in which a first housing 10a and a second housing 10b are connected to each other so as to be openable and closable by a hinge joint 10c.
[0014]
The first housing 10a is provided with a display unit 13 on a surface (a front surface) that becomes inside when folded (see FIG. 1A). In addition, a hole 16a that exposes the lens unit 32 of the imaging device 16 is provided in an upper part of the first housing 10a (see FIG. 1C). By making light incident on the imaging device 20 of the imaging device 16 through the hole 16a, normal imaging or close-up imaging can be performed. Further, as shown in FIGS. 1A and 1B, an antenna 14a is provided on an upper portion of the first housing 10a.
[0015]
Further, inside the first housing 10a, a proximity imaging optical member 100 that enables proximity imaging by the imaging device 16, an annular member 110 provided with the proximity imaging optical member 100, and an annular member 110 are provided. An annular member rotating mechanism for rotating. The close-up imaging optical member 100, the annular member 110, and the annular member rotating mechanism will be described later with reference to FIGS.
[0016]
The input unit 12 is provided on the front of the second housing 10b, and a power supply control unit 17 such as a charge pack is provided on a surface (rear surface) that becomes outside when folded. Further, inside the second housing 10b, a control unit 11 for integrally controlling the entire apparatus, a radio communication unit 14 for transmitting and receiving a radio signal related to an incoming call and an outgoing call with a radio base station (not shown), A storage unit 15 and a transmission / reception unit 18 are incorporated. The control unit 11, the wireless communication unit 14, and the like will be described later with reference to FIG.
[0017]
The input unit 12 includes a numeric keypad, various function switches, a mode switch for switching between a call mode and a camera mode, and the like, and is used for inputting an instruction to execute a shooting process.
[0018]
The display unit 13 includes an LCD (Liquid Crystal Display) panel or the like, and performs screen display based on display data input from the control unit 11. In addition, the display unit 13 displays an image that has been preview-photographed by the imaging device 16, the content of code information decoded by the control unit 11, and the like. The antenna 14a is connected to the wireless communication unit 14.
[0019]
The imaging device 16 includes a lens unit made of glass or plastic and an imaging device, and converts an image input through the lens unit into an electric signal by the imaging device to generate image data. The image sensor has a function as an optical sensor that detects the amount of ambient light, and outputs a detection signal corresponding to the amount of ambient light to the control unit 11. The imaging device 16 is capable of executing an imaging process in a normal imaging mode and a proximity imaging mode based on the control of the control unit 11.
[0020]
The configuration of the imaging device 16 will be described with reference to FIG. The imaging device 16 is provided on one surface of the substrate PC, and adjusts the amount of light incident on the imaging device 20 serving as a sensor for sensing light, the optical member 30 for condensing the light on the imaging device 20, and the amount of light incident on the optical member 30. Aperture plate 40, mirror frame 50 as an outer frame member for covering image pickup device 20, light shielding plate 60 having light shielding properties, filter 70 supported by light shielding plate 60, pressing member 80 for pressing optical member 30, optical member It is configured to include a positioning electric component 90 for positioning the 30.
[0021]
The optical member 30 serves to form a subject image on the photoelectric conversion unit 21 of the imaging device 20 and is made of a transparent plastic material. As shown in FIG. 2, the optical member 30 is supported by the leg 31 and the leg 31. And a convex lens-shaped lens portion 32 are integrally formed. When the optical member 30 is incorporated in the mobile phone 1, the height in the optical axis direction is preferably set to 15 mm or less.
[0022]
As shown in FIG. 2, the aperture plate 40 is fixed on the upper surface of the optical member 30 and around the lens unit 32 with an adhesive B. The aperture plate 40 is made of a material having a light-shielding property, and has an opening 41 as a first aperture that defines an aperture value (F value) of the lens unit 32.
[0023]
The lens frame 50 is made of a material having a light-shielding property, and is arranged outside the optical member 30. The lens frame 50 is formed in a quadrangular prism shape, and a support portion 51 that supports the optical member 30 along the horizontal direction is integrally formed on two opposing inner surfaces thereof.
[0024]
The light shielding plate 60 is attached to the upper end of the lens frame 50 with an adhesive. The light-shielding plate 60 has an opening 61 as a second stop at a position corresponding to the optical member 30, and a filter 70 made of a material having an infrared absorbing property is bonded below the opening 61 by an adhesive. Have been. The filter 70 is formed corresponding to the diameter of the optical member 30. The light shielding plate 60 is formed to be slightly smaller than the opening at the upper end of the lens frame 50 so as to close this opening. The light shielding plate 60 and the filter 70 form a cover member. As described above, since the substrate PC, the lens frame 50, and the cover member are in close contact with and joined to each other, the imaging device 16 has a dustproof and moistureproof structure.
[0025]
A pressing member 80 formed of an elastic member such as a coil spring is disposed between the optical member 30 and the light shielding plate 50. By attaching the light shielding plate 60 to the lens frame 50, the light shielding plate 60 presses the pressing member 80, and the pressing member 80 is elastically deformed. The pressing member 80 presses the optical member 30 downward with a predetermined pressing force toward the lower side in FIG. 2 to urge the optical member 30 toward the image sensor 20. When a force is applied from the light-shielding plate 60 to the lower imaging device 20, the pressing member 80 is elastically deformed, so that a buffering action is performed to absorb the force. Therefore, the force is not directly transmitted to the imaging device 20. This has the effect of preventing the image sensor 20 from being damaged.
[0026]
The image sensor 20 is a CMOS (Complementary Metal Oxide Semiconductor) type image sensor. The lower surface of the rectangular thin plate imaging element 20 is attached to the upper surface of the substrate PC. At the center of the upper surface of the imaging device 20, a photoelectric conversion unit 21 in which pixels are two-dimensionally arranged is formed. A processing unit (not shown) is formed outside the photoelectric conversion unit 21, and a plurality of pads (not shown) are arranged near the outer edge of the processing unit. The pads as external connection terminals are connected to the substrate PC via wires W, as shown in FIG. The wire W is connected to a predetermined circuit on the substrate PC, and the predetermined circuit outputs captured image data to the control unit 11.
[0027]
The power supply control unit 17 includes, for example, a secondary battery such as a lithium battery, a nickel battery, and a nickel-cadmium battery. When the power is turned on, the power supply control unit 17 receives a positive terminal and a negative terminal according to the control of the control unit 11. Thus, power of a predetermined voltage is supplied to a drive circuit that drives each unit of the mobile phone 1.
[0028]
Next, the proximity imaging optical member 100, the annular member 110, and the annular member rotating mechanism will be described with reference to FIGS.
[0029]
The proximity imaging optical member 100 is a member that enables proximity imaging by the imaging device 16. By disposing the close-up imaging optical member 100 on the optical axis of the imaging device 16, the focal length unique to the imaging device 16 is changed to a focal length enabling close-up imaging (hereinafter, referred to as “second focal length”). Is converted to The second focal length is a focal length such that the depth of field is several cm to ∞. As the close-up imaging optical member 100, a close-up lens, an aperture plate having an aperture function, or the like can be employed.
[0030]
The annular member 110 is disposed around the imaging device 16 in the first housing 10a, and is rotated by an annular member rotation mechanism described later around a rotation axis 111 substantially perpendicular to the optical axis of the imaging device 16 in FIG. and the direction rotatable member of the arrow R ₁ or R ₂ in FIG. As shown in FIGS. 3 and 4, the annular member 110 is provided with a plurality of true circular through holes 112 at equal intervals along the circumference. The above-described optical members for proximity imaging 100 are attached to every other of the through holes 112.
[0031]
The annular member rotation mechanism positions the proximity imaging optical member 100 on the optical axis of the imaging device 16 by rotating the annular member 110 about the rotation shaft 111 described above. The annular member rotating mechanism in the present embodiment includes a first tooth portion 113 provided on the inner peripheral surface of the annular member 110, an internal gear 120 having a second tooth portion 121 meshing with the first tooth portion 113, And a motor 130 for rotating the internal gear 120.
[0032]
The internal gear 120 and the motor 130 are provided near the substrate PC inside the annular member 110, as shown in FIG. The motor 130 is driven by the control unit 11. When the motor 130 is driven to rotate the internal gear 120 forward or reverse, the annular member 110 having the first tooth portion 113 that meshes with the second tooth portion 121 of the internal gear 120 becomes R _{1 in} FIGS. 3 and 4. or so that the pivots in the direction of R _2.
[0033]
When the annular member 110 is not moved from the position shown in FIG. 3, light enters the imaging device 20 of the imaging device 16 through the through hole 112 of the annular member 110. As a result, normal imaging can be performed. On the other hand, when the annular member 110 is moved in the direction of R ₁ or R ₂ in FIG. 3 by the annular member rotating mechanism, the proximity imaging optical member 100 is arranged on the optical axis of the imaging device 16. As a result, the focal length unique to the imaging device 16 is converted to the second focal length, so that close-up imaging can be performed.
[0034]
Next, a functional configuration of the mobile phone 1 according to the present embodiment will be described with reference to FIG. FIG. 5 is a block diagram illustrating a functional configuration of the mobile phone 1. As shown in FIG. 5, the mobile phone 1 includes a control unit 11, an input unit 12, a display unit 13, a wireless communication unit 14 having an antenna 14a, a storage unit 15, an imaging device 16, a power supply control unit 17, and a transmission / reception unit 18. , Etc., and each unit is connected by a bus 19.
[0035]
The control unit 11 includes a CPU (Central Processing Unit) 11a, a RAM (Random Access Memory) 11b composed of a rewritable semiconductor element, a ROM (Read Only Memory) 11c composed of a nonvolatile semiconductor memory, and the like. Have been.
[0036]
In the ROM 11c, a basic operation control program, a communication processing program, display data to be displayed on the display unit 13, and parameter data relating to imaging (default setting data for automatic imaging, preview imaging , An image capturing control program c1, a code recognition program c2, and code recognition data c3. Here, the code recognition data c3 is reference data for setting a code similarity coefficient (Q) for determining whether the image data includes a two-dimensional code as an information code.
[0037]
The CPU 11a develops a program specified from various programs stored in the ROM 11c into a work area of the RAM 11b according to various instructions input from the input unit 12 or data input from the wireless communication unit 14, Various processes are executed according to the program according to instructions and input data. Then, the CPU 11a stores the processing result in a predetermined area of the RAM 11b and causes the display unit 13 to display the result.
[0038]
More specifically, the CPU 11a reads the imaging control program c1 stored in the ROM 11c and executes an imaging control process described later. As an imaging control process, the CPU 11a controls the imaging device 16 in accordance with a user operation instruction or the like input from the input unit 12, stores image data acquired by the imaging device 16 in a predetermined memory or the like in the RAM 11b, A preview is displayed on the display unit 13 at a rate of 25 fps.
[0039]
Further, the CPU 11a executes a code process for recognizing a two-dimensional code object which may be a two-dimensional code on the acquired image data according to a code recognition program c2 as a code recognition unit.
[0040]
More specifically, the CPU 11a compares the image data with the code recognition data c3 every five frames to determine whether or not the image data contains a two-dimensional code. More specifically, the CPU 11a compares the image data with the code recognition data c3 as the similarity coefficient calculation information as a similarity coefficient calculation unit, and thereby sets the code similarity coefficient to the two-dimensional code object. Is calculated, and a two-dimensional code object (information code object) or a two-dimensional code that may be a two-dimensional code is recognized based on the value of the code similarity coefficient.
[0041]
Further, when the code similarity coefficient may include a code, but there is a two-dimensional code object determined to be a non-deterministic numerical value, the CPU 11a changes the imaging mode from the normal imaging mode to the close-up imaging mode. Switch to mode. Specifically, the CPU 11a drives the motor 130 of the annular member rotating mechanism to rotate the annular member 110, and disposes the close-up imaging optical member 100 on the optical axis of the imaging device 16, thereby performing close-up imaging. Enable. That is, the CPU 11a is control means in the present invention.
[0042]
Here, the normal imaging mode is an imaging mode in which the depth of field is 1 m to ∞. The close-up imaging mode is an imaging mode in which the depth of field is several cm to ∞, and is suitable for imaging when the focal length is shorter than the normal imaging mode and the distance to the subject is shorter.
[0043]
When the two-dimensional code is recognized in the acquired image data, the CPU 11a decodes the two-dimensional code as a decoding unit, and causes the display unit 13 to display the two-dimensional code as a display control unit. Further, the CPU 11a executes an operation based on the information of the decoded information code as an execution unit.
[0044]
The wireless communication unit 14 executes a communication protocol for a mobile phone corresponding to a predetermined communication method with the wireless base station via the antenna 14a in accordance with an instruction input from the control unit 11, and uses this communication method. Transmission / reception voice transmission / reception and data communication are executed by the set communication channel.
[0045]
The storage unit 15 stores data of a result of the processing executed by the control unit 11 and the like. For example, the storage unit 15 stores data of an image captured by the imaging device 16, data of mail transmitted and received via the wireless communication unit 14, data of a call history, and the like.
[0046]
The transmission / reception unit 18 has a microphone, a speaker, an A / D conversion unit, a D / A conversion unit, and the like (not shown), and performs A / D conversion processing on a user's transmission voice input from the microphone. The transmission voice data is output to the CPU 11a, and the reception voice data, the ring tone, the operation confirmation sound, the shutter sound, and the like input from the CPU 11a are D / A converted and output from the speaker.
[0047]
Next, an imaging control process of the mobile phone 1 according to the present embodiment will be described with reference to FIGS. FIG. 6 is a flowchart for explaining the imaging control process, and FIG. 7 is a schematic diagram of a subject in the imaging control process.
[0048]
When a predetermined button of the input unit 12 is pressed by the user of the mobile phone 1, the CPU 11a determines that the input is an instruction for an imaging process, reads the imaging control program c1 stored in the ROM 11c, and reads the imaging control program c1 into the RAM 11b. Then, control of the imaging process is started according to the imaging control program c1. At this time, the user shoots the subject (such as a two-dimensional code) as shown in FIG. 7 by pointing the imaging device 16 of the mobile phone 1 toward the subject.
[0049]
In the imaging process, the CPU 11a first resets the count number of frames of the image data stored in the RAM 11b to 0 (N = 0) (step S1), and issues an instruction to start the imaging process in the normal imaging mode to the imaging device 16. Output to Then, the imaging device 16 sequentially outputs the subject image data condensed by the optical member 30 and formed on the photoelectric conversion unit 21 of the imaging device 20 to the control unit 11 as an imaging process in the normal imaging mode (step). S2).
[0050]
Then, the CPU 11a executes a preview display process of sequentially storing the image data input from the imaging device 16 in the RAM 11b and displaying these images on the display unit 13 at a frame rate of 25 fps (step S3). Further, in parallel with the execution of the preview display processing, the CPU 11a counts the number of frames of the image input from the imaging device 16 (N = N + 1) (step S4), and determines whether the number of frames is “5”. Is determined (step S5).
[0051]
When the CPU 11a determines that the number of frames is “5” (step S5: Yes), the process proceeds to step S6. On the other hand, if it is determined that the number of frames is not 5 (step S5: No), the process returns to step S2 and repeats steps S3 and S4.
[0052]
Next, in steps S6 to S8, the CPU 11a reads the code recognition program c2 stored in the ROM 11c and expands the code recognition program c2 in the RAM 11b, and starts controlling the code recognition process according to the code recognition program c2. Specifically, the CPU 11a executes the two-dimensional code recognition process by comparing and comparing the image data of the subject when the number of frames is “5” with the code recognition data c3.
[0053]
Here, as a method of the recognition processing, for example, a method of performing recognition by detecting a predetermined cutout symbol indicating a two-dimensional code in image data of a subject, a method of performing recognition based on the density of image data of a subject, There is a method of recognizing a predetermined mosaic shape of the code, but the method is not limited to these.
[0054]
The operation of the CPU 11a in steps S6 to S8 will be specifically described. In step S6, the CPU 11a compares the image data with the code recognition data c3 as similarity coefficient calculation information to determine the code similarity for determining the possibility that the image data is a two-dimensional code. Calculate the coefficient (Q).
[0055]
Next, the CPU 11a determines whether or not the calculated value of the code similarity coefficient (Q) is “0.5” or more (Step S7), and determines that Q is “0.5” or more. If this is done (step S7: Yes), it is determined that there is a possibility of a predetermined two-dimensional code.
[0056]
On the other hand, when determining that the calculated code similarity coefficient (Q) is less than 0.5 (Step S7: No), the CPU 11a determines that there is little possibility that the code is a two-dimensional code, and After resetting the count to 0 (step 9), the process returns to step S2, and the preview display process and the code recognition process for every five frames are repeated.
[0057]
As described above, the CPU 11a executes the two-dimensional code recognition process on the image data of the subject every five frames. Accordingly, the processing load on the CPU 11a is reduced, and the effect on the image data acquisition processing and the preview display processing of the image data of the subject executed in parallel can be reduced.
[0058]
In addition, the CPU 11a determines whether or not the code similarity coefficient (Q) is “1” in step S8, and when determining that the code similarity coefficient (Q) is “1” (step S8: Yes), the two-dimensional code is used. It is determined that there is, and the process proceeds to step S10.
[0059]
On the other hand, when the CPU 11a determines that the code similarity coefficient (Q) is equal to or greater than “0.5” but is not “1” (step S8: No), the CPU 11a determines that the code similarity coefficient (Q) is a two-dimensional code target (information code target). Recognize that there is. Then, the CPU 11a executes a close-up imaging mode setting process so that the imaging device 16 performs close-up imaging (step S11), and returns to step S2 via step S9.
[0060]
In steps S2 and subsequent steps, as an imaging process in the proximity imaging mode, the motor 130 of the annular member rotating mechanism is driven to move the annular member 110 under the control of the CPU 11a, and the proximity imaging optical member 100 is moved to the imaging device 16 To perform close-up imaging of a subject. At this time, the image data of the close-up imaging acquired by the imaging device 16 is preview-displayed on the display unit 13. Further, the CPU 11a executes a code recognition process for every five frames on the image data in the close-up imaging mode in parallel with the imaging process and the preview display process in the close-up imaging mode.
[0061]
At this time, since the focal length of the imaging process in the close-up imaging mode is shorter than that of the imaging process in the normal imaging mode, the recognition rate of the two-dimensional code is improved. Therefore, it is possible to recognize, as a two-dimensional code, an object that may be a two-dimensional code in the normal imaging mode but is not determined (two-dimensional code target). Accordingly, the recognition rate of the two-dimensional code in the image data of the subject is improved.
[0062]
If it is determined in step S8 that the code similarity coefficient (Q) is “1” and the process proceeds to step S10, the CPU 11a executes a process of decoding the recognized two-dimensional code, and The code information content is displayed on the display unit 13 (step S12). Here, examples of the code information content displayed on the display unit 13 include character information such as a URL address and an e-mail address, and arbitrary image information.
[0063]
Next, the CPU 11a determines whether or not an instruction signal of a predetermined process for the code information content displayed on the display unit 13 has been input by an operation of the input unit 12 by the user (step S13), and the instruction signal is input. If it is determined that the instruction has been made (step S13: Yes), the process according to the instruction is executed (step S14), and the process proceeds to step S15.
[0064]
Here, as the predetermined process for the code information content, for example, when the code information content is a URL address, a connection instruction to the URL address is given, and when the code information content is an e-mail address, An instruction to create an e-mail addressed to an e-mail address, when the code information content is a telephone number or an e-mail address, etc., can be stored in an address book, etc., but are not limited to these. Absent.
[0065]
On the other hand, when determining in step S13 that there is no input of the instruction signal from the user (step S13: No), the CPU 11a proceeds to step S15. Then, in step S15, the CPU 11a determines whether or not an instruction to end the imaging process has been input by the operation of the input unit 12 by the user, and when it is determined that the instruction has been input, the imaging device 16 terminates the imaging process. By outputting the instruction, the imaging control process is terminated.
[0066]
On the other hand, when the CPU 11a determines that there is no input of an instruction to end the imaging process (Step S15: No), the process from Step S9 is repeated through Step S9.
[0067]
In the mobile phone 1 according to the present embodiment, the CPU 11a of the control unit 11 controls the driving of the motor 130 of the annular member rotating mechanism based on the image data acquired by the imaging device 16, and performs the normal imaging mode. Can be automatically switched to a close-up imaging mode for performing close-up imaging. Therefore, when switching the imaging mode, there is no need for the user to judge whether or not the imaging mode is appropriate or to perform the switching operation with fingers. Further, it is not necessary to rotate the imaging device 16 with fingers when switching the imaging mode. As a result, the operation at the time of imaging can be greatly simplified.
[0068]
Further, in mobile phone 1 according to the present embodiment, an internal gear 120 having first teeth 113 provided on the inner peripheral surface of annular member 110 and second teeth 121 meshing with first teeth 113. And a motor 130 for rotating the internal gear 120, constitutes an annular member rotating mechanism. By rotating the internal gear 120 by the motor 130, an annular member provided with the first teeth 113 is provided. 110 can be rotated. Therefore, the rotation of the annular member 110 and the accompanying switching to the close-up imaging can be realized with a very simple mechanism.
[0069]
In addition, in the imaging control process of the mobile phone 1 according to the present embodiment, a predetermined two-dimensional image data in the image data is processed in parallel with the acquisition process of the image data of the subject by the imaging device 16 and the preview display process of the image data. The code data recognition processing and the two-dimensional code data decoding processing are automatically executed. Therefore, for example, the user can automatically recognize and decode the two-dimensional code attached to a business card, a magazine, or the like by performing the same operation as in a normal imaging process without performing a troublesome setting. Since the two-dimensional code can be read and decoded in a short time, it is very convenient to use.
[0070]
Also, for example, when the image data acquired in the normal imaging mode is out of focus or contains a lot of noise, it cannot be clearly recognized as a two-dimensional code. , The motor 140 of the imaging device moving mechanism is controlled so as to automatically switch to the imaging processing in the close-up imaging mode suitable for two-dimensional code recognition. Therefore, the recognition accuracy of the two-dimensional code can be improved without imposing a burden on the user for changing the setting of the imaging mode.
[0071]
In addition, when the possibility that a two-dimensional code is included in the image data acquired in the normal imaging mode is low or when the two-dimensional code is clearly recognized, the imaging mode is not switched, so that it is efficient. is there.
[0072]
Note that the description in the present embodiment is a preferred example of the mobile phone 1 according to the present invention, and is not limited to this. For example, the configuration of the imaging device 16 illustrated in the present embodiment is not limited as long as the imaging process in the normal imaging mode and the close-up imaging mode can be executed.
[0073]
Further, in the above description, the description has been given using a two-dimensional code as an example of the information code. However, the present invention is not limited to the two-dimensional code. For example, any information code such as a bar code and a color code may be used. Good.
[0074]
Further, in the imaging control process in the mobile phone 1 according to the present embodiment, when the two-dimensional code is decoded, the code information content is displayed on the display unit 13 and based on an instruction of a predetermined process by the user. Although the description has been given of the configuration in which various processes corresponding to the information content of the two-dimensional code are executed, the configuration may be such that the CPU 11a automatically executes a predetermined process when the code information content is decoded.
[0075]
In addition, the detailed configuration and detailed operation of the mobile phone 1 according to the present embodiment can be appropriately changed without departing from the spirit of the present invention. The mobile terminal of the present invention is not limited to the mobile phone 1 described in the present embodiment, but may be a PHS (R), PC, PDA, or the like.
[0076]
【The invention's effect】
According to the first aspect of the present invention, the control means drives and controls the annular member rotating mechanism based on the image data acquired by the imaging device, and shifts from the normal imaging mode in which normal imaging is performed to the close-up imaging mode in which close-up imaging is performed. Can be automatically switched to. Therefore, when switching the imaging mode, there is no need for the user to judge whether or not the imaging mode is appropriate or to perform the switching operation with fingers. Further, it is not necessary to rotate the imaging device with a finger when switching the imaging mode. As a result, the operation at the time of imaging can be greatly simplified.
[0077]
According to the second aspect of the present invention, the first gear provided on the inner peripheral surface of the annular member, the internal gear having the second gear engaged with the first tooth, and the internal gear are rotated. An annular member rotating mechanism is constituted by the motor and the annular member provided with the first tooth portion can be rotated by rotating the internal gear by the motor. Therefore, the rotation of the annular member and the accompanying switching to the close-up imaging can be realized with a very simple mechanism.
[Brief description of the drawings]
1A and 1B show an external configuration of a mobile phone according to an embodiment of the present invention, wherein FIG. 1A is a front view of the mobile phone, FIG. 1B is a rear view of the mobile phone, and FIG. It is a top view.
FIG. 2 is a sectional view taken along the line II-II in FIG. 1 (c).
FIG. 3 is a perspective view for explaining an annular member rotating mechanism provided in the mobile phone shown in FIG. 1;
FIG. 4 is a plan view (view from above) of the annular member rotating mechanism shown in FIG. 3;
FIG. 5 is a block diagram showing a functional configuration of the mobile phone shown in FIG. 1;
FIG. 6 is a flowchart illustrating an imaging control process performed by the mobile phone illustrated in FIG. 1;
FIG. 7 is a schematic diagram illustrating an example of a subject imaged by the imaging device of the mobile phone illustrated in FIG. 1;
[Explanation of symbols]
1 mobile phone (mobile terminal)
11a CPU (control means)
16 imaging device 20 imaging element 21 photoelectric conversion unit 32 lens unit 100 proximity imaging optical member 110 annular member 113 first tooth portion (annular member rotating mechanism)
120 Internal gear (annular member rotation mechanism)
121 2nd tooth part (annular member rotation mechanism)
130 motor (annular member rotation mechanism)

Claims (3)

An imaging device having a photoelectric conversion unit, and a lens unit that forms a subject image on the photoelectric conversion unit, a mobile terminal including an imaging device having:
An annular member having an optical member for close-up imaging that enables close-up imaging by the imaging device, and being rotatable around the imaging device around a rotation axis arranged substantially perpendicular to the optical axis of the imaging device; When,
An annular member rotating mechanism for rotating the annular member around the rotation axis to position the proximity imaging optical member on the optical axis of the imaging device;
A control unit that automatically switches from a normal imaging mode for performing normal imaging to a close-up imaging mode for performing close-up imaging by driving-controlling the annular member rotation mechanism based on image data acquired by the imaging device,
A mobile terminal comprising: The annular member rotation mechanism,
A first tooth portion provided on an inner peripheral surface of the annular member;
An internal gear having a second tooth engaged with the first tooth;
A motor driven by the control means to rotate the internal gear,
The portable terminal according to claim 1, wherein the portable terminal comprises: The proximity imaging optical member,
The mobile terminal according to claim 1, wherein the mobile terminal is a lens for adjusting a focal length of the imaging device, or an aperture plate for adjusting an amount of light incident on the imaging device.

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