JP2011193349A - Antenna built-in image pickup device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an antenna built-in image pickup device that strikes a balance between non-contact communication with a storage medium and clear picked-up image thereof. <P>SOLUTION: A thin scanner 1 that is the antenna built-in image pickup device includes: an image read portion 10 for reading an image of a NFC card 100; a metal case body 7 for holding the image read portion 10; an antenna pattern 41 for carrying out communication with the NFC card 100; a NFC antenna 40 which covers the entire surface of the image read portion 10 on a side opposite to a surface of a side for reading the image of the NFC card 100 in the image read portion 10 and which is disposed in the case body 7; and a magnetic sheet 50 with magnetic force, which covers the entire surface of the image read portion 10 on a side opposite to a surface of a side of the image read portion 10 in the NFC antenna 40 and which is disposed in the case body 7. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an imaging device with a built-in antenna.

  In recent years, when reading and writing information stored in a storage medium, the number of storage media and devices capable of reading and writing in a non-contact manner has increased in consideration of convenience when performing the reading and writing. In addition, in such a device that performs reading and writing without contact, it is also provided with a function for performing reading and writing, and other functions, for convenience in use, and providing a plurality of functions in one device. Some of the devices are downsized.

  For example, in the reader / writer device with a liquid crystal display function described in Patent Document 1, information is obtained using electromagnetic waves with a non-contact IC card which is a non-contact information recording medium capable of reading and writing information without contact. An antenna capable of transmitting and receiving and a liquid crystal panel for displaying various information, and a magnetic material is disposed on the opposite side of the antenna from the side on which the liquid crystal panel is provided, Further, the liquid crystal control circuit for controlling the liquid crystal panel is disposed on the opposite side to the side where the liquid crystal panel is provided with the antenna and the magnetic body interposed therebetween. Thus, even when a liquid crystal control circuit that has an influence on transmission / reception between the IC card and the antenna is provided by providing the magnetic body and arranging each device as described above, the IC card and Transmission and reception with the antenna can be performed satisfactorily.

Japanese Patent No. 4104630

  In the case of performing transmission / reception with a storage medium in a non-contact manner, an antenna is required like the reader / writer device with a liquid crystal display function described in Patent Document 1, but such a device in recent years has been downsized. In many cases, the antenna is required, and when the antenna is provided in the apparatus, it is often provided in the state of being close to other devices. On the other hand, as a function provided in combination with this function in an apparatus that performs transmission and reception with a storage medium in a non-contact manner as described above, a function of reading an image on a storage medium and taking an image can be considered. In the case of performing transmission / reception with a storage medium in a non-contact manner, when the above-described IC card is used as the storage medium, transmission / reception is performed by bringing both close together.

  For this reason, in the case where the function of transmitting and receiving with the storage medium and the function of imaging the storage medium are provided together, when the storage medium is imaged, the storage medium is brought close to the imaging device. In the case of such an image pickup device, unlike a liquid crystal panel used in a reader / writer device with a liquid crystal display function described in Patent Document 1, a display image is visually recognized by a human eye. Process. Thus, when processing a captured image as an electrical signal, a slight change in the amount of light also appears as a numerical value. Therefore, it is preferable that the portion for reading the image is as flat as possible, for example, reading the image. When a light guide plate or a reflection plate of a backlight is provided in the part in the same manner as the liquid crystal panel, it is preferable that these are as flat as possible. However, if the antenna is installed in the device and placed close to the backlight, the light guide plate may be distorted and the amount of light may change, resulting in a blurred image. was there.

  The present invention has been made in view of the above, and an object of the present invention is to provide an image pickup apparatus with a built-in antenna that can achieve both non-contact communication with a storage medium and clear imaging of the storage medium.

  In order to solve the above-described problems and achieve the object, an image pickup apparatus with a built-in antenna according to the present invention includes an image reading unit that can read an image on a storage medium, and a metal housing that supports the image reading unit. And an antenna pattern communicable between the image reading unit and the storage medium, and covers the entire surface of the image reading unit on the opposite side of the image reading unit on the image reading unit. An antenna installed in the antenna, and a magnetic body that has magnetic force and is installed in the housing so as to cover the entire surface of the image reading unit on the opposite side of the surface of the antenna on the image reading unit side. It is characterized by providing.

  In the present invention, the antenna having an antenna pattern capable of communicating with the storage medium is provided in the casing together with the magnetic material having magnetic force. Therefore, even when the casing is made of metal, Non-contact communication. In addition, since these antennas and magnetic bodies are disposed so as to cover the entire surface of the image reading unit on the opposite side of the image reading side surface of the image reading unit, the image reading unit when an antenna or the like is provided Can be suppressed. Therefore, when an image of a document such as a storage medium is imaged, the image reading unit can be imaged under the same conditions for the entire image reading unit, so that a clear image can be captured. As a result, both contactless communication with the storage medium and clear imaging of the storage medium can be achieved.

  Further, in the above-mentioned antenna built-in type imaging device, the image reading unit is provided with a backlight that emits irradiation light for irradiating the storage medium on the opposite side of the surface on the image reading side of the storage medium. Is preferred.

  In the present invention, a backlight is disposed on the opposite side of the image reading unit on the side where the image of the storage medium is read, and the antenna and the magnetic body cover the entire surface of the image reading unit on the backlight side. Therefore, the change in the amount of light generated in the backlight due to the provision of the antenna or the like can be suppressed. As a result, it is possible to prevent the brightness of the captured image from being different depending on the location or the image from becoming unclear due to the change in the amount of light. A clear image can be taken. As a result, clear imaging of the storage medium when more reliable non-contact communication with the storage medium is realized can be more reliably realized.

  Moreover, in the above-mentioned antenna built-in type imaging device, the antenna pattern of the antenna preferably faces the antenna pattern in the storage medium.

  In the present invention, since the antenna pattern of the antenna is provided so as to face the antenna pattern in the storage medium, the antenna is placed with the storage medium placed at a position where the image of the storage medium can be read by the image reading unit. Almost all the generated magnetic flux can be passed through the storage medium. As a result, it is possible to increase the efficiency of communication with respect to the output when performing non-contact communication while making it possible to image the storage medium, so imaging and non-contact communication can be performed in the same mounting state of the storage medium. In addition, wasteful energy consumption during non-contact communication can be minimized. As a result, both non-contact communication with the storage medium and clear imaging of the storage medium can be achieved more reliably.

  The antenna-mounted imaging device further includes a first main body portion and a second main body portion that are relatively openable and closable by a hinge, and the first main body portion and the second main body portion. Is provided with the image reading section on each surface facing each other when both are closed, and when reading the image of the storage medium, the first main body section and the second main body section are closed. Accordingly, the storage medium is sandwiched between the first main body portion and the second main body portion, and images on both sides of the storage medium can be read by the image reading portions provided on both sides. It is preferable.

  In the present invention, an image reading section is provided in each of the first main body section and the second main body section that can be opened and closed, and when reading an image on the storage medium, the storage medium is provided between the first main body section and the second main body section. The image is read from both sides of the storage medium. As a result, when non-contact communication with the storage medium and imaging of the storage medium are performed simultaneously, both sides of the storage medium can be imaged simultaneously. As a result, it is possible to further improve convenience when performing non-contact communication with the storage medium and imaging of the storage medium at the same time.

  Further, in the above-described antenna built-in type imaging device, the antenna is provided in one of the first main body portion and the second main body portion, and further communication between the storage medium and the antenna. A communication control unit that performs control of the first main body unit and the second main body unit when the communication control unit starts communication between the storage medium and the antenna. It is preferable to start after detecting that the positional relationship is a predetermined positional relationship.

  In this invention, when communication between the storage medium and the antenna is started, it is detected that the relative positional relationship between the first main body and the second main body is a predetermined positional relationship. Therefore, communication can be performed with the antenna impedance kept constant. As a result, fluctuations and distortions in transmission output when performing non-contact communication with the storage medium can be reduced, and good communication can be performed.

  In addition, in the above-described antenna built-in type imaging device, when performing communication when the relative positional relationship between the first main body and the second main body is not a predetermined positional relationship, the storage medium and the antenna It is preferable to start communication by switching the impedance of the communication control unit that controls communication between the antennas so as to match the impedance of the antenna.

  In this invention, when the relative positional relationship between the first body portion and the second body portion is not a predetermined positional relationship, the communication is started by switching the impedance, so the first body portion and the second body portion Regardless of the relative positional relationship, contactless communication can be performed in a good state. As a result, it is possible to improve usability when performing non-contact communication with the storage medium.

  The image pickup device with a built-in antenna according to the present invention has an effect that both non-contact communication with a storage medium and clear image pickup of the storage medium can be achieved.

FIG. 1 is a diagram illustrating an appearance of a thin scanner according to the embodiment, and is a diagram illustrating a state in which a lid is closed. FIG. 2 is a diagram showing a state in which the lid of the thin scanner shown in FIG. 1 is opened. FIG. 3 is a cross-sectional view illustrating a configuration of the image reading unit illustrated in FIG. 2. FIG. 4 is an explanatory diagram showing a mounted state of the NFC antenna. FIG. 5 is a view taken along the line AA of FIG. 4 and is an explanatory diagram showing an antenna pattern. FIG. 6A is an explanatory diagram of a shift between the antenna pattern of the NFC antenna and the antenna pattern of the NFC card. FIG. 6B is an explanatory diagram of a deviation between the antenna pattern of the NFC antenna and the antenna pattern of the NFC card. FIG. 6C is an explanatory diagram of a shift between the antenna pattern of the NFC antenna and the antenna pattern of the NFC card. FIG. 7 is an explanatory diagram of the magnetic field strength with respect to the relative positions of the antenna pattern of the NFC antenna and the antenna pattern of the NFC card. FIG. 8A is an explanatory diagram illustrating a state in which the antenna pattern of the NFC antenna and the antenna pattern of the NFC card are the same size. FIG. 8B is an explanatory diagram illustrating a state where the antenna pattern of the NFC antenna is twice as large as the antenna pattern of the NFC card. FIG. 9 is an explanatory diagram showing the relationship between the relative size of the antenna pattern of the NFC antenna and the antenna pattern of the NFC card and the magnetic field strength. FIG. 10 is a schematic diagram of the NFC antenna shown in FIG. FIG. 11 is an explanatory diagram when the NFC antenna shown in FIG. 10 is mounted. FIG. 12 is a diagram showing an outline of the configuration of the thin scanner shown in FIG. FIG. 13 is an explanatory diagram of the NFC control unit shown in FIG. FIG. 14 is an explanatory diagram for reading an image of a document. FIG. 15 is an explanatory diagram when communication is performed between a thin scanner and an NFC card. FIG. 16 is an explanatory diagram of impedance matching of the NFC antenna. FIG. 17 is a flowchart showing an outline of a processing procedure when reading information of the NFC card by the thin scanner according to the embodiment. FIG. 18 is an explanatory diagram showing an arrangement state of the NFC antenna and the magnetic sheet in the thin scanner shown in FIG. FIG. 19A is an explanatory diagram before the backlight is deformed when the NFC antenna and the magnetic sheet are not provided on the entire surface of the image reading unit. FIG. 19-2 is an explanatory diagram after the backlight is deformed when the NFC antenna and the magnetic sheet are not provided on the entire surface of the image reading unit. FIG. 20 is a flowchart showing a modification of the processing procedure when reading information of the NFC card. FIG. 21 is a perspective view of a thin scanner according to a modification. FIG. 22 is a perspective view of a thin scanner according to a modification. FIG. 23 is a diagram showing a schematic configuration of the thin scanner shown in FIG.

  Hereinafter, embodiments of an imaging device with a built-in antenna according to the present invention will be described in detail with reference to the drawings. In addition, this invention is not limited by this embodiment. In addition, constituent elements in the following embodiments include those that can be easily replaced by those skilled in the art or those that are substantially the same.

Embodiment
FIG. 1 is a diagram illustrating an appearance of a thin scanner according to the embodiment, and is a diagram illustrating a state in which a lid is closed. FIG. 2 is a diagram showing a state in which the lid of the thin scanner shown in FIG. 1 is opened. A thin scanner 1 according to an embodiment that is an example of an imaging device with a built-in antenna according to the present invention includes a lid portion 5 and a second main body portion, which are first main body portions that are both formed into a thin, substantially rectangular parallelepiped shape or substantially plate shape. The lid portion 5 and the main body portion 6 are connected to each other by a hinge 8. Thereby, the cover part 5 and the main-body part 6 are provided so that opening and closing is possible relatively. The lid 5 and the main body 6 both have a metal casing, and the lid 5 and the main body 6 are provided with an image reading unit 10 for reading an image. Specifically, the lid 5 is provided with a first image reading unit 11 on the surface of the main body 6 when the lid 5 is closed, and the main body 6 has a lid when the lid 5 is closed. The second image reading unit 12 is provided on the surface on the 5 side. The first image reading unit 11 and the second image reading unit 12 are disposed at overlapping positions when the lid 5 and the main body 6 are closed.

  The lid 5 is provided with an image display unit 15 on the surface opposite to the surface on which the first image reading unit 11 is provided. The image display unit 15 is provided by a liquid crystal panel and can display an arbitrary image. The image display unit 15 is provided with a so-called touch panel that can perform an input operation by touching the image display unit 15 in accordance with the displayed image. The image display unit 15 has a touch panel. It is a liquid crystal panel. For this reason, the image display unit 15 also has a function as an operation input unit.

  The lid 5 and the main body 6 are provided with an open / close detection mechanism (not shown) that can detect the open / close of both by a mechanical sensor, a magnetic sensor, an optical sensor, or the like.

  FIG. 3 is a cross-sectional view illustrating a configuration of the image reading unit illustrated in FIG. 2. Both the image reading units 10 of the first image reading unit 11 and the second image reading unit 12 are provided with the same configuration as shown in FIG. The image reading unit 10 includes a backlight 35, a transparent glass substrate 21 provided on the backlight 35, and a light receiving unit in which a plurality of two-dimensional arrays are arranged on the glass substrate 21 at predetermined intervals. A certain light receiving element 25 is provided in a stacked manner. Among these, the light receiving element 25 disposed on the glass substrate 21 is disposed on the surface of the glass substrate 21 opposite to the side where the backlight 35 is located. The backlight 35 includes an LED (Light Emitting Diode) 38 that is a light source, and a light guide plate 36 and a reflection plate 37 that guide light emitted from the LED 38 to the entire glass substrate 21.

  As described above, in the image reading unit 10 in which the LED 38 is used as a light source, the LED 38 is set to three colors of R (Red), G (Green), and B (Blue), and the light is sequentially emitted to read the image, and the read image is synthesized. By doing so, a color image can be obtained. It should be noted that color can be achieved by providing the light receiving element 25 with an RGB color filter instead of changing the LED 38 to RGB three colors.

  Further, the light source of the backlight 35 uses the LED 38 in the thin scanner 1 according to the present embodiment, but this light source may be a light source other than the LED 38, such as CCFL (Cold Cathode Fluorescent Lamp). A light source may be used.

  The backlight 35 is provided on the opposite side of the glass substrate 21 from the side where the light receiving element 25 is located. The backlight 35 reflects light emitted from the LED 38 and the light guide plate 36 when the LED 38 emits light. The glass 37 can be guided to the entire glass substrate 21 by the plate 37, and the glass substrate 21 is provided by a transparent member. For these reasons, when the LED 38 emits light, that is, when the backlight 35 emits light, the light from the backlight 35 passes through the glass substrate 21, and the backlight 35 on the glass substrate 21 passes between the plurality of light receiving elements 25. Irradiated in the direction opposite to the side where it is located.

  As described above, the portion between the plurality of light receiving elements 25 on the glass substrate 21 provided in a transparent manner uses this light when the backlight 35 emits light, and is on the side where the backlight 35 is located on the glass substrate 21. It is provided as a light emitting unit 26 capable of emitting light in the opposite direction. That is, since the light receiving elements 25 arranged on the glass substrate 21 are separated from each other, the light emitting portions 26 are provided around the respective light receiving elements 25. In addition, the light receiving element 25 and the light emitting portion 26 are provided on the glass substrate 21 as described above. Therefore, the layer made of the glass substrate 21 including the light receiving element 25 is configured to receive and emit light. It is provided as a light emitting / receiving layer 20 capable of.

  Since the image reading unit 10 provided in this way is provided so that the light receiving element 25 provided in the light receiving and emitting layer 20 can receive the light reflected by the document, the image of the document can be read. When the image reading unit 10 reads an image of a document, the image reading unit 10 reads the image on the side where the light receiving element 25 is provided. Further, the image reading unit 10 is provided with a backlight 35 that emits irradiation light for irradiating the document on the side opposite to the surface on which the image of the document is read.

  FIG. 4 is an explanatory diagram showing a mounted state of the NFC antenna. FIG. 5 is a view taken along the line AA of FIG. 4 and is an explanatory diagram showing an antenna pattern. The thin scanner 1 according to the present embodiment is an IC card that is provided as a storage medium capable of storing information by incorporating an IC (Integrated Circuit) and can read and write information without contact. When an image is read by the thin scanner 1 using an NFC (Near Field Communication) card as a document, it has a communication function capable of communicating with the NFC card. For this reason, the thin scanner 1 according to the present embodiment is equipped with an NFC antenna 40 that is an antenna having an antenna pattern 41 that can communicate with an NFC card.

  The NFC antenna 40 is provided by a printed board, is provided in the main body 6, and is provided at a position on the reflection plate 37 side of the backlight 35. That is, the backlight 35 is disposed on the side opposite to the side where the light emitting / receiving layer 20 is located. The NFC antenna 40 is made of a material that forms a printed board such as resin or FR4 (Frame Regentant Type 4) even in a portion where the antenna pattern 41 that is actually a portion capable of communicating with the NFC card is not provided. It is provided and is formed with a uniform thickness throughout the printed board.

  Further, on the opposite side of the NFC antenna 40 from the side where the backlight 35 is located, the magnetic sheet is a magnetic material that has a magnetic force and is formed with a uniform thickness by including a magnetic material. 50 is disposed along the NFC antenna 40. Both the NFC antenna 40 and the magnetic sheet 50 are provided in a size larger than the light guide plate 36 and the reflection plate 37 included in the backlight 35, and are large enough to cover at least the entire light guide plate 36 and the reflection plate 37. Is formed. That is, the NFC antenna 40 is installed in the housing 7 so as to cover the entire surface of the image reading unit 10 on the opposite side of the image reading unit 10 from the surface on the image reading unit 10 side. The antenna 40 is installed in the casing 7 so as to cover the entire surface of the image reading unit 10 on the opposite side of the surface on the image reading unit 10 side. For this reason, the NFC antenna 40 and the magnetic sheet 50 are arranged on the entire backlight 35 with uniform thicknesses on the opposite side of the backlight 35 from the side where the light emitting / receiving layer 20 is located.

  The NFC antenna 40 and the magnetic sheet 50 do not have to be the same size. If both are formed to have a size that can cover the entire surface of the image reading unit 10, the NFC antenna 40 and the magnetic sheet 50 may be used. The size of the magnetic sheet 50 may be different.

  The NFC antenna 40 is formed of a printed board as described above, but the antenna pattern 41 of the NFC antenna 40 is preferably provided so as to face the antenna pattern in the NFC card that reads an image as a document. That is, the NFC card is provided with an antenna used for transmission / reception with an external communication device, but the antenna pattern 41 of the NFC antenna 40 is substantially the same as the antenna of the NFC card. It is preferable to provide it.

  Further, the term “facing” here means that antennas having the same shape are superimposed on the same coordinates. In the actual measurement example of the direct alignment between the antenna pattern 41 of the NFC antenna 40 and the antenna pattern in the NFC card, when there is a positional deviation of about 10% with respect to the outer dimension, the magnetic field strength is also reduced by 10%. %.

  Here, the relationship between the relative position between the antenna pattern 41 of the NFC antenna 40 and the antenna pattern of the NFC card and the magnetic field strength will be described based on an actual measurement example. FIG. 6A to FIG. 6C are explanatory diagrams of the deviation between the antenna pattern of the NFC antenna and the antenna pattern of the NFC card. 6A to 6C, the antenna pattern 41 of the NFC antenna 40 and the antenna pattern 101 in the NFC card 100 have the same shape, and the center of the NFC card 100 and the antenna pattern 41 of the NFC antenna 40 An arrangement example is shown in which the NFC card 100 is shifted from the center of the antenna pattern 41 of the NFC antenna 40 by a certain distance with the center as the reference position for arrangement, and the magnetic field strength at that time is measured. Among these, FIG. 6-1 shows a state in which the horizontal relative position is −6.0 mm and the vertical relative position is ± 0.0 mm. FIG. 6B shows a state in which both the horizontal relative position and the vertical relative position are ± 0.0 mm. FIG. 6-3 illustrates a state where the horizontal relative position is ± 0.0 mm and the vertical relative position is + ± 3.5 mm.

  FIG. 7 is an explanatory diagram of the magnetic field strength with respect to the relative positions of the antenna pattern of the NFC antenna and the antenna pattern of the NFC card. As shown in FIG. 7, the magnetic field strength is greatest when the relative position shift is 0 mm, and the magnetic field strength becomes weaker as the position shifts in any of the vertical and horizontal directions. Become. For this reason, it is desirable to arrange the antenna pattern 41 of the NFC antenna 40 as far as possible from the antenna pattern 101 in the NFC card 100.

  FIG. 8A is an explanatory diagram illustrating a state in which the antenna pattern of the NFC antenna and the antenna pattern of the NFC card are the same size. FIG. 8B is an explanatory diagram illustrating a state where the antenna pattern of the NFC antenna is twice as large as the antenna pattern of the NFC card. FIG. 9 is an explanatory diagram showing the relationship between the relative size of the antenna pattern of the NFC antenna and the antenna pattern of the NFC card and the magnetic field strength. Further, the antenna shape will be described. Usually, the larger the antenna, the larger the radiation gain, and the larger power can be radiated. However, this is only radiated in a wide range, and in the case of close proximity like NFC, a part of the magnetic flux generated by the transmitting-side antenna does not pass, and the magnetic flux intensity is reduced. For example, as shown in FIG. 9, when the antenna pattern 41 of the NFC antenna 40 is twice as large as the antenna pattern 101 of the NFC card 100 (FIG. 8-2), the antenna pattern of the NFC antenna 40 Compared with the case where the antenna pattern 101 of the NFC card 100 and the antenna pattern 101 of the NFC card 100 are the same size (FIG. 8-1), the magnetic field strength is reduced. Therefore, it is desirable that the antenna pattern 41 of the NFC antenna 40 has the same size as the antenna pattern 101 in the NFC card 100 as much as possible.

  The NFC antenna 40 is thus provided with the antenna pattern 41. The main body 6 in which the NFC antenna 40, the magnetic sheet 50, and the like are installed is equipped with a circuit for controlling the thin scanner 1 according to this embodiment. A main control board 60 is also provided. The main control board 60 is provided outside the metal casing 7 of the main body 6. Moreover, although the housing 7 of the lid 5 is also made of metal, the magnetic sheet 50 is also provided in the lid 5 (see FIG. 15). In other words, the lid 5 and the housing 7 of the main body 6 support the image reading unit 10 and include an NFC antenna 40 and a magnetic sheet 50.

  FIG. 10 is a schematic diagram of the NFC antenna shown in FIG. FIG. 11 is an explanatory diagram when the NFC antenna shown in FIG. 10 is mounted. The NFC antenna 40 formed of a printed board is provided as a so-called flexible board, which is a flexible board. The board is formed in a substantially rectangular shape, and an antenna pattern 41 is provided on the board in the form of a loop antenna. It has been. Further, the NFC antenna 40 is provided with a connection portion 45 formed by projecting a part of a substrate formed in a substantially rectangular shape in the plane direction of the substrate, and the antenna pattern 41 is also provided in the connection portion 45. Is provided. Further, a connection terminal 46 that is a connection portion of the antenna pattern 41 with an external electric circuit is provided at the end of the connection portion 45.

  When the NFC antenna 40 thus provided is mounted on the main body 6, the connection portion 45 is folded back to connect the connection terminal 46 and the main control board 60. Accordingly, the NFC antenna 40 is disposed in the main body 6 in a state parallel to the main control board 60.

  FIG. 12 is a diagram showing an outline of the configuration of the thin scanner shown in FIG. The thin scanner 1 provided as described above can be controlled by the main control board 60. The main control board 60 is provided with a processing unit, a storage unit, and an input / output unit. Among these, the processing unit is provided with a CPU (Central Processing Unit) 70 that performs various arithmetic processes.

  The processing unit also includes a first image reading unit control unit 71 that controls image reading by the first image reading unit 11 and a first read image capturing unit 72 that captures an image read by the first image reading unit 11. A second image reading unit control unit 75 that controls reading of an image by the second image reading unit 12, a second read image reading unit 76 that reads an image read by the second image reading unit 12, and an image display An image display control unit 80 for controlling image display in the unit 15; an input operation acquisition unit 81 for acquiring an input operation performed on the image display unit 15; and a lid based on a detection result of the open / close detection mechanism. An open / close detection unit 85 for detecting the open / close between the unit 5 and the main unit 6, and a communication control unit for controlling communication between the NFC card 40 and the NFC card, that is, control of communication between the NFC card and the NFC antenna 40. NFC system It has a part 90, a.

  FIG. 13 is an explanatory diagram of the NFC control unit shown in FIG. Control of communication with the NFC card by the NFC antenna 40 is performed by the NFC control unit 90. The NFC control unit 90 is connected to the matching circuit 91 that is connected to the NFC antenna 40 and performs impedance matching, and is connected to the matching circuit 91. Connected to an RF (Radio Frequency) front end 92 provided by a transmission amplifier circuit, a reception detection circuit, etc., an NFC control circuit 93 connected to the RF front end 92 and performing NFC communication protocol control, and an NFC control circuit 93 And an NFC main control circuit 94 that controls the entire NFC communication.

  Further, the NFC main control circuit 94 is connected to an open / close detection unit 85 and a start button 86 for inputting an instruction for starting image capturing of the document. The start button 86 may be provided on the lid 5 or the main body 6 as an independent input switch, or on the image display unit 15 having a function as an operation input unit by providing a touch panel. The function of the start button 86 may be included.

  The thin scanner 1 according to this embodiment is configured as described above, and the operation thereof will be described below. FIG. 14 is an explanatory diagram for reading an image of a document. When the thin scanner 1 is used normally, the main body 6 is positioned on the lower side so that the second image reading unit 12 (FIG. 2) is directed upward, and the thin scanner 1 is relatively positioned with respect to the second image reading unit 12. The lid portion 5 that can be opened and closed is used as a lid for the main body portion 6. The case where the thin scanner 1 provided in this way reads an image of the NFC card 100 as a document will be described. First, with the lid 5 opened, the NFC is placed on the second image reading unit 12 provided in the main body 6. The card 100 is placed, and in this state, the lid 5 is closed with the hinge 8 as the rotation center. As a result, the NFC card 100 is sandwiched between the lid 5 and the main body 6 and is sandwiched between the first image reading unit 11 (FIG. 2) and the second image reading unit 12. That is, the image reading unit 10 (FIG. 2) is positioned on both sides of the NFC card 100.

  When the lid 5 and the main body 6 are closed in this way, the open / close detection unit 85 (FIG. 12) detects that both are closed. As described above, when the open / close detection unit 85 detects that the lid unit 5 and the main body unit 6 are in a closed state, automatically or by a predetermined input operation to the image display unit 15 (FIG. 1). The thin scanner 1 controls the image reading unit 10 to read an image on the NFC card 100. When performing this image reading control, the first image reading unit control unit 71 (FIG. 12) controls the first image reading unit 11, and the second image reading unit control unit 75 (FIG. 12) controls the second image reading unit. 12 is controlled. As a result, the image reading unit 10 starts reading an image.

  The image of the NFC card 100 read by the first image reading unit 11 or the second image reading unit 12 is captured by the first read image capturing unit 72 (FIG. 12) or the second read image capturing unit 76 (FIG. 12). Then, the image display control unit 80 (FIG. 12) controls the image display unit 15 to display the image on the image display unit 15. Thus, when the user of the thin scanner 1 visually recognizes the image of the NFC card 100 displayed on the image display unit 15 and the user performs an input operation to the start button 86 (FIG. 13) at an arbitrary timing, the thin scanner 1 is displayed. The scanner 1 stores the images captured by the first read image capture unit 72 and the second read image capture unit 76 in the storage unit. That is, the image read by the first image reading unit 11 or the second image reading unit 12 is stored, and thereby the image of the NFC card 100 is captured.

  The case where the image reading unit 10 reads the image of the NFC card 100 will be described in detail. When the image of the NFC card 100 is read, the NFC card 100 is placed on the side opposite to the backlight 35 side in the light emitting / receiving layer 20 of the image reading unit 10. In the arranged state, the LED 38 included in the backlight 35 of the image reading unit 10 is caused to emit light. Light emitted from the LED 38 is guided to the entire light guide plate 36 by the light guide plate 36, and is reflected by the reflector plate 37 at a portion where the reflector plate 37 is located. For this reason, the light emitted from the LED 38 is emitted from the surface of the backlight 35 opposite to the surface on which the reflection plate 37 is located, and irradiates the light receiving / emitting layer 20. That is, at the time of reading an image, the light emitting / receiving layer 20 is irradiated by the backlight 35 by causing the LED 38 to emit light.

  When the light receiving / emitting layer 20 is irradiated by the backlight 35, the light from the backlight 35 is transmitted through the glass substrate 21 included in the light receiving / emitting layer 20, and the opposite side of the surface of the glass substrate 21 where the backlight 35 is located. On the surface, light is emitted toward the NFC card 100 from the light emitting unit 26 where the light receiving element 25 is not disposed. That is, when the backlight 35 emits light, the light emitting unit 26 irradiates the NFC card 100.

  Thus, the light emitted from the light emitting unit 26 and reaching the NFC card 100 is reflected by the NFC card 100, and at that time, the reflected light is reflected according to the surface state such as the color of the surface of the NFC card 100. To reflect. The light reflected by the NFC card 100 is reflected toward the light receiving / emitting layer 20 and directed toward the light receiving / emitting layer 20. The reflected light toward the light emitting / receiving layer 20 reaches the light receiving / emitting layer 20 from the surface of the light receiving / emitting layer 20 on which the light receiving element 25 and the light emitting unit 26 are located. Thereby, the light receiving element 25 receives the reflected light reflected by the NFC card 100.

  The reflected light reflected by the NFC card 100 is reflected light according to the state of the surface of the NFC card 100, and the light receiving element 25 is provided so as to be able to generate an electrical signal according to the received light. For this reason, the light receiving element 25 that receives the reflected light reflected by the NFC card 100 generates an electrical signal corresponding to the state of the surface of the NFC card 100 reflected by the received reflected light. Thus, the electrical signal generated by the light receiving element 25 is transmitted to the first read image capturing unit 72 and the second read image capturing unit 76, and is captured by these portions.

  That is, the electrical signal generated by receiving the reflected light from the NFC card 100 by the light receiving element 25 of the first image reading unit 11 is transmitted to the first read image capturing unit 72, and the second image reading unit 12 The electric signal generated by receiving the reflected light from the NFC card 100 by the light receiving element 25 having the light receiving element 25 is transmitted to the second read image capturing unit 76. The first read image capturing unit 72 and the second read image capturing unit 76 acquire NFC by acquiring electrical signals from the plurality of light receiving elements 25 included in the first image reading unit 11 and the second image reading unit 12. Image information of the NFC card 100 on the side facing each of the first image reading unit 11 and the second image reading unit 12 in the card 100 is acquired. That is, one side of the NFC card 100 is read by the first image reading unit 11 and the other side is read by the second image reading unit 12, whereby both sides of the NFC card 100 are read by the image reading unit 10.

  FIG. 15 is an explanatory diagram when communication is performed between a thin scanner and an NFC card. When an image of the NFC card 100 is captured using the NFC card 100 as a document, the image is read by reading the image on the surface of the NFC card 100 with the image reading unit 10 as described above. When performing the communication, the NFC control unit 90 performs communication with the NFC card 100 using the NFC antenna 40.

  Specifically, the NFC control unit 90 generates a magnetic field M in the NFC antenna 40, thereby generating power in the NFC card 100 having an antenna pattern that receives the magnetic field M, and an IC chip (not shown) in the NFC card 100. ). By changing the magnitude of the magnetic field M generated by the NFC antenna 40, the voltage generated at the antenna on the NFC card 100 changes. The IC chip on the NFC card 100 receives information from the NFC control unit 90 by detecting this voltage change. Further, the antenna and the IC chip on the NFC card 100 serve as a load for the NFC control unit 90, but the voltage generated in the NFC antenna 40 changes when the IC chip turns the load on and off. The NFC control unit 90 receives information from the NFC card 100 by detecting this voltage change. In this way, communication is performed between the NFC control unit 90 and the NFC card 100.

  Here, the casing 5 is made of metal in the lid 5 and the main body 6. However, when communication is performed by generating a magnetic field M in the metallic casing 7, the metallic part M is made by the magnetic field M. An eddy current is generated in the housing 7 to suppress the generation of the magnetic field M. For this reason, in this case, communication cannot be performed, but in the thin scanner 1 according to the present embodiment, the magnetic sheet 50 is disposed in the metal casing 7. Since the magnetic sheet 50 has a high magnetic permeability, the magnetic flux easily concentrates. Therefore, the magnetic flux of the magnetic field M generated by the NFC antenna 40 can pass through the magnetic sheet 50 and maintain the magnetic flux loop. Thereby, since the magnetic field M can be generated, communication with the NFC card 100 can be performed.

  When communication is performed between the thin scanner 1 and the NFC card 100, the magnetic field M is generated as described above. Next, processing performed by each unit of the NFC control unit 90 will be described. For example, a case where a signal from the NFC card 100 is received by the NFC antenna 40 will be described. When a signal is received by the NFC antenna 40, impedance matching between the NFC antenna 40 and the RF front end 92 is performed by the matching circuit 91. I do. The signal whose impedance is matched by the matching circuit 91 is transmitted to the RF front end 92, and reception detection is performed by the RF front end 92. Further, this signal is transmitted from the RF front end 92 to the NFC control circuit 93, and the NFC control circuit 93 performs protocol control of NFC communication. That is, a predetermined conversion is performed on the signal transmitted from the RF front end 92 and the converted signal is transmitted to the NFC main control circuit 94. Thereby, the signal from the NFC card 100 is transmitted to the NFC main control circuit 94.

  Also, when transmitting from the NFC control unit 90, a signal is transmitted from the NFC main control circuit 94 to the NFC control circuit 93, contrary to the time of reception, and after the protocol conversion by the NFC control circuit 93, the post-conversion The signal is transmitted to the RF front end 92. In the RF front end 92, the signal transmitted from the NFC control circuit 93 is amplified and transmitted to the matching circuit 91. The matching circuit 91 performs impedance matching between the RF front end 92 and the NFC antenna 40, transmits a signal from the RF front end 92 to the NFC antenna 40, and transmits the signal from the NFC antenna 40 to the NFC card 100. When NFC communication is performed between the thin scanner 1 and the NFC card 100, information is communicated by performing various processes in each unit of the NFC control unit 90 as described above.

  FIG. 16 is an explanatory diagram of impedance matching of the NFC antenna. Here, the NFC antenna 40 having the antenna pattern 41 of the loop antenna has the same impedance (Z = R + jX) as that of the coil, most of the value of the imaginary part (X), and the value of the real part (R) is extremely high. It is very small. When this is brought close to the housing 7 of the main body 6, the value of the real part (R) becomes very large. Further, it is necessary to match the impedance between the circuit side of the NFC control unit 90 and the NFC antenna 40, but when the value of the real part (R) increases and the characteristics of the NFC antenna 40 change, the matching cannot be achieved, and the transmission output Significantly decreases, or a large distortion occurs in the output. Such a change in the characteristics of the NFC antenna 40 can be reduced by providing the magnetic sheet 50, but the characteristics change even when the magnetic sheet 50 is provided as compared with the NFC antenna 40 alone.

  In addition, the thin scanner 1 according to the present embodiment is provided so that the body portion 6 and the lid portion 5 in which the NFC antenna 40 is installed can be opened and closed, and the lid portion 5 is more than the state in which the lid portion 5 is opened. The change in the characteristics of the NFC antenna 40 is further increased in the closed state. For example, as shown in FIG. 16, when the NFC antenna 40 is provided in the metal casing 7 rather than the antenna alone, the antenna impedance (real part) becomes larger. When the NFC antenna 40 is provided in the metal casing 7, the size is larger than that of the antenna alone even when the lid 5 is opened. Further, when the NFC antenna 40 is provided in the metal casing 7 and the lid portion 5 is closed as described above, the antenna impedance is larger than the state in which the lid portion 5 is opened.

  In addition, the antenna impedance changes depending on the open / closed state of the lid 5 as described above. However, when impedance matching is adjusted with the lid 5 opened, the lid opens as shown by the matching transmission output TOop when the lid is opened. When the section 5 is closed, the antenna impedance increases, so that the matching is shifted, and the transmission output is greatly reduced. On the other hand, when the antenna impedance matching adjustment is performed with the lid 5 closed, the state where the lid 5 is closed is the most suitable state for communication, and the transmission output has a necessary and sufficient size. It can be secured. When the lid portion 5 is opened under this matching condition, the transmission output is reduced due to the misalignment. However, since the influence of the first image reading unit 11 is eliminated, the transmission output looks large. However, since this is out of alignment, it is not in a state suitable for communication.

  For this reason, antenna impedance matching is performed with the lid 5 closed, and NFC communication in the NFC control unit 90 is performed when the open / close detection unit 85 detects the open / closed state of the lid 5 and closes the lid 5. Communication is started after detecting. In other words, the NFC main control circuit 94 obtains the detection result of the open / close detection unit 85 and the NFC main control circuit 94 detects that the lid 5 has been closed, and then the NFC main control circuit 94 controls the NFC communication. Start. In this way, when the NFC control unit 90 starts communication between the NFC card 100 and the NFC antenna 40, the relative positional relationship between the lid 5 and the main body 6 is a predetermined positional relationship. Start by detecting that. Thereby, the impedance when the NFC antenna 40 is viewed from the NFC control unit 90 side is made constant. If communication is also required with the lid 5 open, check the matching conditions when the lid 5 is opened, and switch to the matching conditions when the lid 5 is closed. To do.

  FIG. 17 is a flowchart showing an outline of a processing procedure when reading information of the NFC card by the thin scanner according to the embodiment. Next, an outline of a control method when reading information from the NFC card 100 with the thin scanner 1 according to the present embodiment, that is, a processing procedure during NFC communication with the thin scanner 1 will be described. When reading the information of the NFC card 100 with the thin scanner 1 according to the present embodiment, the NFC main control circuit 94 issues a read start instruction for the NFC card 100 (step ST101). Next, it is determined whether or not the lid 5 is closed (step ST102). This determination is made by the NFC main control circuit 94 according to the determination result in the open / close detection unit 85.

  If it is determined by the determination in the NFC main control circuit 94 (step ST102) that the lid 5 is closed, the information of the NFC card 100 is read (step ST103). Thus, when reading the information of the NFC card 100, various processes are performed in each unit of the NFC control unit 90 as described above, and communication is performed between the NFC antenna 40 and the NFC card 100. The information of the NFC card 100 is read.

  After reading the information of the NFC card 100, next, comparison with image information is performed, the read information is displayed, and various processes after reading the information are executed (step ST104). That is, the information of the NFC card 100 read by the NFC control unit 90 is compared with the image information acquired by the first read image acquisition unit 72 or the second read image acquisition unit 76, and both of them are used as necessary. By comparing the acquired information according to a predetermined procedure or controlling the image display unit 15 by the image display control unit 80, the information of the NFC card 100 read by the NFC control unit 90 is displayed on the image display unit 15. Or

  As described above, when it is determined that the lid 5 is not closed by the determination in the NFC main control circuit 94 (step ST102) in contrast to the control when it is determined that the lid 5 is closed, an error occurs. A stop is executed and a message is displayed on the image display unit 15 (step ST105). That is, when it is determined that the lid 5 is not closed, the NFC main control circuit 94 stops the process of reading the information of the NFC card 100. In this case, the information reading stop information of the NFC card 100 due to the fact that the lid 5 is not closed is transmitted from the NFC main control circuit 94 to the image display control unit 80, and the image display control unit 80 uses the image display unit 15. By controlling, a message to that effect is displayed.

  Since the above thin scanner 1 includes the image reading unit 10 that can read the image of the NFC card 100, the image of the NFC card 100 can be taken. In addition, an NFC antenna 40 capable of communicating with the NFC card 100 is provided, and a magnetic sheet 50 is disposed on the surface of the NFC antenna 40 opposite to the image reading unit 10 side. Even when installed in the body, the magnetic field M can be reliably generated by the NFC antenna 40, and communication between the NFC antenna 40 and the NFC card 100 can be performed more reliably. That is, contactless communication with the NFC card 100 can be performed more reliably.

  The NFC antenna 40 and the magnetic sheet 50 are provided so as to cover the entire surface of the image reading unit 10. Thereby, it is possible to suppress the occurrence of distortion in the image reading unit 10. FIG. 18 is an explanatory diagram showing an arrangement state of the NFC antenna and the magnetic sheet in the thin scanner shown in FIG. FIG. 19A is an explanatory diagram before the backlight is deformed when the NFC antenna and the magnetic sheet are not provided on the entire surface of the image reading unit. FIG. 19-2 is an explanatory diagram after the backlight is deformed when the NFC antenna and the magnetic sheet are not provided on the entire surface of the image reading unit. That is, the NFC antenna 40 is provided with a resin or the like in a portion where the antenna pattern 41 is not provided, so that the NFC card 40 in the image reading unit 10 is formed with a uniform thickness over the entire printed board. Are provided on the entire surface opposite to the image reading surface. That is, as shown in FIG. 18, the NFC antenna 40 is disposed so as to cover the entire surface of the image reading unit 10 on the side where the backlight 35 is provided, with a uniform thickness.

  Similarly, the magnetic sheet 50 is also formed with a uniform thickness, and is disposed along the NFC antenna 40 on the opposite side of the surface of the NFC antenna 40 on the image reading unit 10 side. It is provided to cover. For this reason, the NFC antenna 40 and the magnetic sheet 50 disposed on the surface of the image reading unit 10 on the side where the backlight 35 is provided have a uniform thickness at least in a range covering the image reading unit 10. The image reading unit 10 is formed so as to cover the entire surface.

  Thereby, even when the NFC antenna 40 and the magnetic sheet 50 are provided close to the image reading unit 10, the force received from them is uniform over the entire surface of the image reading unit 10. The side on which the magnetic sheet 50 is disposed has a flat shape. Specifically, the flat shape of the reflector 37 and the light guide plate 36 located on the side where the NFC antenna 40 and the magnetic sheet 50 are disposed in the image reading unit 10 is maintained as shown in FIG.

  On the other hand, as shown in FIG. 19A, when the NFC antenna 40 is formed in a shape substantially the same as the shape of the antenna pattern 41, and the magnetic sheet 50 is made the minimum size, The image reading unit 10 may be distorted. In other words, when the NFC antenna 40 and the magnetic sheet 50 are disposed in the vicinity of the image reading unit 10 so as not to cover the entire surface of the image reading unit 10, the image reading unit 10 is provided with the NFC antenna 40 and the like. In some cases, the force from the NFC antenna 40 or the like may act only on the portion where it is present. For this reason, in this case, the reflector 37 and the light guide plate 36 located on the side where the NFC antenna 40 and the like are disposed are positioned where the NFC antenna 40 and the magnetic sheet 50 are provided as shown in FIG. May be distorted.

  As described above, when the image reading unit 10 is distorted, it is difficult to accurately read an image of an original such as the NFC card 100 by the image reading unit 10, and the image of the NFC card 100 is captured. In some cases, distortion may occur or the image may become unclear. In contrast, by disposing the NFC antenna 40 and the magnetic sheet 50 formed with a uniform thickness over the entire surface of the image reading unit 10, distortion of the image reading unit 10 when the NFC antenna 40 and the like are provided is suppressed. be able to. For this reason, when the document such as the NFC card 100 is imaged, the image reading unit 10 can be imaged under the same conditions in the entire image reading unit 10, so that a clear image can be captured. As a result, both contactless communication with the NFC card 100 and clear imaging of the NFC card 100 can be achieved.

  Further, since the image reading unit 10 is provided with a backlight 35 on the opposite side of the image reading side of the NFC card 100, the NFC antenna 40 and the magnetic sheet 50 are arranged on the entire surface of the image reading unit 10. By setting it, the NFC card 100 can be imaged more reliably and clearly. That is, when distortion occurs in the light guide plate 36 and the reflection plate 37 of the backlight 35, the amount of light generated in the backlight 35 changes. However, when the image reading unit 10 reads an image and processes it as an electrical signal, The change in the amount of light clearly appears as a numerical value. For this reason, when an image of an original such as the NFC card 100 is captured by reading the image with the image reading unit 10, the brightness of the captured image differs depending on the location due to the change in the amount of light. It may be blurred.

  In contrast, when the NFC antenna 40 and the magnetic sheet 50 are disposed on the entire surface of the image reading unit 10, distortion of the light guide plate 36 and the reflection plate 37 can be suppressed. Even when read and processed as an electrical signal, no change in the amount of light appears. As a result, a document such as the NFC card 100 can be clearly imaged more reliably. As a result, clear imaging of the NFC card 100 when realizing more reliable non-contact communication with the NFC card 100 can be more reliably realized.

  In addition, since the NFC antenna 40 is provided so as to be able to communicate with the NFC card 100, when the NFC card 100 is used as a document for reading an image by the image reading unit 10, Communication of information with the NFC card 100 can be performed simultaneously. Thereby, the reading of the information of the NFC card 100, the writing of the information to the NFC card 100, and the imaging of the image of the NFC card 100 can be performed simultaneously. As a result, when performing imaging and communication of the NFC card 100, it is not necessary to separately perform it, so that convenience can be improved.

  Further, since the antenna pattern 41 of the NFC antenna 40 is provided so as to face the antenna pattern in the NFC card 100, the imaging of the NFC card 100 and the non-contact communication with the NFC card 100 can be performed more reliably. This can be realized with the same loading state of the card 100. That is, in consideration of the influence on the image read by the image reading unit 10, when the antenna pattern 41 of the NFC antenna 40 is provided around the image reading unit 10, the entire NFC antenna 40 becomes large, so that there is nothing in the space. Also generates a magnetic field. For this reason, the efficiency of communication with respect to the output when performing NFC communication and the spatial efficiency due to the increase in the NFC antenna 40 are reduced. Similarly, in consideration of the influence on the image read by the image reading unit 10, when the NFC antenna 40 is made small and provided on the side of the image reading unit 10, a space for providing the NFC antenna 40 is required. Further, if the NFC antenna 40 is made too small, the transmission power from the NFC antenna 40 becomes small. If the NFC antenna 40 is made too small, the NFC card 100 is placed in different places depending on whether the image reading unit 10 reads an image or the NFC antenna 40 performs NFC communication. It may be necessary to perform processing.

  On the other hand, when the antenna pattern 41 of the NFC antenna 40 is provided so as to face the antenna pattern in the NFC card 100, the NFC card 100 is placed at a position where the image reading unit 10 can read the image of the NFC card 100. In the mounted state, almost all the magnetic flux generated by the NFC antenna 40 can pass through the NFC card 100. This makes it possible to increase the efficiency of communication with respect to the output when performing NFC communication while making the NFC card 100 capable of imaging, so that imaging and non-contact communication can be performed in the same placement state of the NFC card 100. It is possible to minimize wasteful energy consumption during non-contact communication. As a result, non-contact communication with the NFC card 100 and clear imaging of the NFC card 100 can be achieved more reliably.

  Further, the image reading unit 10 is provided in each of the lid unit 5 and the main body unit 6 that can be opened and closed. The image is read from both sides of the NFC card 100. As a result, when non-contact communication with the NFC card 100 and imaging of the NFC card 100 are performed simultaneously, both surfaces of the NFC card 100 can be imaged simultaneously. As a result, it is possible to further improve convenience when performing non-contact communication with the NFC card 100 and imaging of the NFC card 100 at the same time.

  When communication between the NFC card 100 and the NFC antenna 40 is started, the communication is started after detecting that the relative positional relationship between the lid 5 and the main body 6 is a predetermined positional relationship. Therefore, communication can be performed with the impedance of the NFC antenna 40 kept constant. As a result, it is possible to reduce fluctuations and distortions in transmission output when performing non-contact communication with the NFC card 100, and good communication can be performed.

  In the thin scanner 1 according to the above-described embodiment, when NFC communication is performed, if it is determined by the determination in the NFC main control circuit 94 (FIG. 17, step ST102) that the lid 5 is not closed, Although the error stop is executed (FIG. 17, step ST105), NFC communication may be executed even when it is determined that the lid 5 is not closed. For example, when an impedance switching circuit is provided and it is determined that the relative positional relationship between the lid 5 and the main body 6 is not a predetermined positional relationship, that is, it is determined that the lid 5 is not closed. In some cases, the NFC communication may be executed by switching the impedance. As described above, the impedance switching circuit (not shown) used when switching the impedance is provided in the RF front end 92 or the NFC control circuit 93.

  FIG. 20 is a flowchart showing a modification of the processing procedure when reading information of the NFC card. The processing procedure when switching the impedance will be described. The NFC main control circuit 94 issues an instruction to start reading the NFC card 100 (step ST101), and the NFC main control circuit 94 determines whether or not the lid 5 is closed. (Step ST102), if it is determined that the lid 5 is not closed, the impedance is switched (step ST111).

  This switching is executed by transmitting an impedance switching instruction from the NFC main control circuit 94 to a circuit provided with an impedance switching circuit such as the NFC control circuit 93 or the RF front end 92. The NFC control circuit 93 and the RF front end 92 that have received the impedance switching instruction from the NFC main control circuit 94 switch the impedance so as to match the impedance of the NFC antenna 40 in a state where the lid 5 is opened. As a result, communication can be performed between the NFC antenna 40 and the NFC card 100 with the lid 5 opened, so the information of the NFC card 100 is read (step ST103) and compared with the image information. , Display the read information, and execute various processes after reading the information (step ST104).

  As described above, by providing an impedance switching circuit and switching the impedance when the lid 5 is open, contactless communication can be performed in a favorable state regardless of the open / closed state of the lid 5. As a result, it is possible to improve usability when performing non-contact communication with the NFC card 100.

  In the thin scanner 1 according to the above-described embodiment, the NFC antenna 40 is installed in the main body 6, but the NFC antenna 40 may be installed in the lid 5. The NFC antenna 40 only needs to be provided inside either the lid 5 or the main body 6. Regardless of the side on which the NFC antenna 40 is provided, the NFC antenna 40 is disposed with the magnetic sheet 50 so as to cover the entire surface of the image reading unit 10 with a uniform thickness, thereby enabling non-contact communication with the NFC card 100 and NFC. Both clear imaging of the card 100 can be achieved.

  In the thin scanner 1 according to the above-described embodiment, the document read by the image reading unit 10 may be other than the NFC card 100. Further, even when the image reading unit 10 reads an image of the NFC card 100, it is not always necessary to perform communication between the NFC antenna 40 and the NFC card 100, and only the imaging of the NFC card 100 may be performed. On the contrary, the image reading unit 10 may read only the information of the NFC card 100 without performing the reading of the image of the NFC card 100 but performing only non-contact communication.

  In addition, the thin scanner 1 according to the above-described embodiment has the lid 5 and the main body 6 each including the image reading unit 10, and these are connected via the hinge 8, whereby the NFC card 100. Can be read between the lid 5 and the main body 6, but the image of the NFC card 100 may be read. 21 and 22 are perspective views of a thin scanner according to a modification. For example, as shown in FIGS. 21 and 22, the thin scanner 130 is provided by only one main body portion 135 formed in a thin substantially rectangular parallelepiped shape or a substantially plate shape, and one surface of the main body portion 135 is provided. The image display unit 15 may be provided, and the image reading unit 10 may be provided on the other surface. The configurations and functions of the image reading unit 10 and the image display unit 15 are provided in the same form as the image reading unit 10 and the image display unit 15 provided in the thin scanner 1 according to the embodiment. Further, similar to the thin scanner 1 according to the embodiment, the thin scanner 130 includes the NFC antenna 40 with a uniform thickness covering the entire surface of the image reading unit 10 on the surface of the image reading unit 10 on the backlight 35 side. A magnetic sheet 50 is disposed.

  FIG. 23 is a diagram showing a schematic configuration of the thin scanner shown in FIG. As described above, even when the thin scanner 130 is formed by only one main body 135 and only one image reading unit 10 is provided, the thin scanner 130 has a main control board 60 that controls each part of the thin scanner 130. Is provided. The main control board 60 includes a processing unit, a storage unit, and an input / output unit, and the processing unit includes a CPU 70. The processing unit also includes an image reading unit control unit 141 that controls image reading by the image reading unit 10, a read image capturing unit 142 that captures an image read by the image reading unit 10, and an image display control unit 80. The input operation acquisition unit 81 and the NFC control unit 90 are provided.

  When the image of the NFC card 100 is read by the thin scanner 130 formed as described above, the image reading unit 10 of the thin scanner 130 faces the reading side of the NFC card 100 to be read. When a predetermined input operation is performed on the image display unit 15 in the state where the image reading unit 10 is opposed to the NFC card 100 or before the NFC card 100 is opposed to the NFC card 100, the image reading unit control unit 141 causes the image reading unit 10 to be moved. By performing the control, reading by the image reading unit 10 is started.

  The image read by the image reading unit 10 is captured by the read image capturing unit 142, and the image display control unit 80 controls the image display unit 15 to display the read image on the image display unit 15. As described above, when the user of the thin scanner 130 visually recognizes the image displayed on the image display unit 15 and performs an input operation to the start button 86, the thin scanner 130 reads the image captured by the read image capturing unit 142. The image is stored in the storage unit and an image of the NFC card 100 is taken.

  Further, when NFC communication is performed between the NFC antenna 40 and the NFC card 100, the image reading unit 10 automatically reads an image of the NFC card 100 or according to a predetermined input operation by a user. The NFC control unit 90 controls NFC communication to perform NFC communication. In this thin scanner 130, the NFC antenna 40 and the magnetic sheet 50 are arranged on the surface of the image reading unit 10 on the backlight 35 side so as to cover the entire surface of the image reading unit 10 and have a uniform thickness. When performing the imaging and communication, it is possible to achieve both non-contact communication with the NFC card 100 and clear imaging of the NFC card 100.

  In the thin scanner 1 according to the above-described embodiment, the lid 5 is provided as the first main body and the main body 6 is provided as the second main body. However, the first main body and the second main body are provided. The part may be provided by means other than the lid part 5 and the main body part 6. That is, the first main body does not need to be provided as a lid of the second main body, and the relationship between the first main body and the second main body is the same as the lid 5 and the main body of the thin scanner 1 according to the embodiment. It is not bound by the relationship with 6.

  As described above, the antenna built-in type imaging device according to the present invention is useful for an antenna built-in type imaging device that performs non-contact communication with a storage medium. Suitable for

DESCRIPTION OF SYMBOLS 1,130 Thin scanner 5 Cover part 6,135 Main body part 7 Case 10 Image reading part 35 Backlight 40 NFC antenna 41 Antenna pattern 50 Magnetic sheet 60 Main control board 85 Opening / closing detection part 90 NFC control part 91 Matching circuit 92 RF front End 93 NFC control circuit 94 NFC main control circuit 100 NFC card

Claims (6)

An image reading unit capable of reading an image on a storage medium;
A metallic housing that supports the image reading unit;
The antenna pattern is communicable with the storage medium, and the image reading unit covers the entire surface of the image reading unit on the opposite side of the image reading side of the image reading unit. An antenna,
A magnetic body that has a magnetic force and is provided in the casing so as to cover the entire surface of the image reading unit on the opposite side of the surface of the image reading unit in the antenna;
An image pickup apparatus with a built-in antenna.   2. The backlight according to claim 1, wherein the image reading unit includes a backlight that emits irradiation light that irradiates the storage medium on a side opposite to a surface on the image reading side of the storage medium. An imaging device with a built-in antenna.   The antenna built-in type imaging device according to claim 1, wherein the antenna pattern of the antenna is directly opposed to the antenna pattern in the storage medium. Furthermore, it has a first main body portion and a second main body portion that are relatively openable and closable by a hinge, and the first main body portion and the second main body portion face each other when both are closed. The image reading unit is provided on each surface,
When reading the image of the storage medium, the storage medium is sandwiched between the first main body and the second main body by closing the first main body and the second main body, and both The antenna built-in type imaging device according to any one of claims 1 to 3, wherein the image reading unit is provided so that images on both sides of the storage medium can be read. The antenna is installed in one of the first main body and the second main body,
And a communication control unit that controls communication between the storage medium and the antenna.
When the communication control unit starts communication between the storage medium and the antenna, a relative positional relationship between the first main body unit and the second main body unit is a predetermined positional relationship. 5. The image pickup apparatus with built-in antenna according to claim 4, wherein the image pickup apparatus is started after detection.   Communication control for controlling communication between the storage medium and the antenna when communication is performed when the relative positional relationship between the first main body and the second main body is not a predetermined positional relationship. 6. The antenna built-in type imaging apparatus according to claim 4, wherein the impedance of the unit is switched so as to match the impedance of the antenna, and communication is started.

Images