JP2009110192A - Mobile communication device and display method - Google Patents

Abstract

A portable communication device capable of performing good communication with an external device because a symbol indicating a place where the best communication can be performed can be displayed at any place on a display unit after the portable communication device is assembled. Providing a communication device.
When a cellular phone 1 is completed, the coordinates of the optimal communication location of the loop antenna 101 are measured. Next, the coordinates are stored in the storage unit 108. When communication using the loop antenna 101 is performed, the control unit 110 displays a predetermined symbol at a location corresponding to the coordinates on the display 30.
[Selection] Figure 10

Description

 The present invention relates to a portable communication device having a non-contact communication function using, for example, RFID technology.

  Many mobile communication devices typified by mobile phones are equipped with various functions in addition to a call function and a mail function. For example, there is a portable communication device equipped with a function using a technology of RFID (Radio Frequency IDentification). Hereinafter, a typical communication technique using the RFID technique will be described with reference to FIG.

  FIG. 16 is a diagram illustrating a state in which a mobile phone 900, which is an example of a mobile communication device, and a reader / writer device (hereinafter referred to as R / W device 200) perform non-contact communication using RFID technology. When the mobile phone 900 is brought close to the R / W device 200 by the user, the electromagnetic wave radiated from the R / W device 200 causes a current due to electromagnetic induction to the loop antenna 901 built in the mobile phone 900. The loop antenna 901 is electrically connected to an IC tag 902 built in the mobile phone 900, and a current flowing through the loop antenna 901 flows to the IC tag 902. The IC tag 902 is transmitted from the loop antenna 901. It is activated by the supplied current and starts communicating with the R / W device 200 via the loop antenna 901.

  The communication distance in contactless communication using this RFID technology is very short. Therefore, the user generally uses the cellular phone 900 as close to the R / W device 200 as possible. However, even if the mobile phone 900 is brought close to the R / W device 200 by the user, if the distance between the loop antenna 901 and an antenna (not shown) built in the R / W device 200 is greater than a threshold value, Communication between the telephone 900 and the R / W device 200 becomes impossible.

  In order to solve such a problem, for example, the mobile phone 900 and the R / W device 200 are printed with marks (stars in the figure) as shown in FIG. The star mark written on the mobile phone 900 and the star mark written on the R / W device 200 are places where the communication state between the two parties is good when the star marks overlap (communication optimum place). ). Note that a mark such as an asterisk written on the mobile phone 900 is formed when a resinous outer casing of the mobile phone 900 is molded.

  Therefore, the user can realize good communication by bringing the mobile phone 900 and the R / W device 200 close to each other so that the mark formed on the mobile phone 900 matches the mark formed on the R / W device 200. Is possible.

In order to solve such a problem, there is also a technique shown in Patent Document 1. The mobile phone 900 according to this technology allows the user to control the communication between the mobile phone 900 and the R / W device 200 by performing display and voice transmission according to the intensity of the electromagnetic wave received from the R / W device 200. It is to tell.
JP2007-074102

  By the way, the portable communication device using the RFID technology as described above receives, for example, an electromagnetic wave from the R / W device with a specific frequency as the center of the resonance frequency.

  However, the variation in the magnetic permeability of the magnetic sheet attached to the loop antenna, the variation in the magnetic permeability of the magnetic sheet attached to a component (such as a battery) disposed near the loop antenna, and the IC tag are provided. When the portable communication device is assembled due to variations in the capacitance of the capacitors that are present, the center of the resonance frequency deviates from the specific frequency planned at the beginning of the design.

  Therefore, when the mobile communication device is assembled at the manufacturing stage, the optimal communication location is changed from the location marked on the housing with a star or the like.

  A specific example will be described with reference to FIG. FIG. 17 shows a difference in the resonance frequency when the loop antenna for non-contact communication arranged inside the casing of the mobile phone receives electromagnetic waves from an external device (in the “response mode” described in detail below). It is the schematic diagram which showed a mode that the optimal communication location of a mobile telephone differed. According to the experiment, the optimal communication location (location indicated by a double circle in FIG. 17) when the resonance frequency of the loop antenna is the lower limit value of the tolerance for the specific frequency, and the tolerance of the resonance frequency of the loop antenna for the specific frequency. It is known that the optimum communication location is deviated when the optimum communication location (location shown by a single circle in FIG. 17) is compared.

  In other words, there is a problem that the mark indicating the optimum communication location formed by mold molding and the actual optimum communication location are shifted, and good non-contact communication cannot be performed between the mobile communication device and the R / W device. there were.

  In order to solve such a problem, an object of the present invention is to provide a portable communication device capable of performing good communication with an external device.

  A portable communication device according to the present invention is a portable communication device that performs non-contact communication with an external device, and includes a communication unit capable of non-contact communication with the external device via an antenna unit provided, and a back surface unit. And a display unit having the rear unit disposed facing the antenna unit, and displaying a predetermined symbol at a communication optimal position for the non-contact communication with the external device in the display area of the display unit. And a control unit.

  More preferably, the mobile communication device according to the present invention indicates a first coordinate indicating the optimum communication location for the reception processing in the non-contact communication and the optimum communication location for the transmission processing in the non-contact communication. A storage unit storing second coordinates, wherein the control unit displays the symbol at a position corresponding to the first coordinate of the display unit during the reception process, and the display unit during the transmission process. The symbol is displayed at a position corresponding to the second coordinate of the section.

  A display method according to another aspect of the present invention is a communication method for performing non-contact communication with an external device, wherein non-contact communication is performed with the external device via an antenna unit, and a back surface unit is connected to the antenna unit. A predetermined symbol is displayed on a communication optimal position for the non-contact communication with the external device on the display unit arranged to face each other.

  ADVANTAGE OF THE INVENTION According to this invention, the portable communication apparatus which can perform favorable non-contact communication with an external device by displaying the symbol which shows the optimal communication location with respect to non-contact communication on a display part can be provided.

  The best mode for carrying out the present invention will be described below with reference to the drawings. Hereinafter, a two-fold type mobile phone will be described as a mobile communication device. However, the present invention is not limited to this, and a PHS (Personal Handy Phone System), a PDA (Personal Digital Assistant), a portable navigation device, Even if it is a notebook personal computer etc., if it is a communication apparatus provided with the communication function by RFID technology, it is applicable. The present invention can also be implemented in revolver type and straight type mobile phones.

  The basic structure of the mobile phone 1 as a mobile communication device will be described with reference to FIGS. FIG. 1 is a front view showing a state in which a cellular phone 1 as a portable communication device is opened. 2A shows a left side view when the mobile phone 1 is opened, and FIG. 2B shows a right side view when the mobile phone 1 is opened. FIG. 3 shows a rear view in a state where the mobile phone 1 is opened.

  The mobile phone 1 includes an operation unit side body 2 and a display unit side body 3. The operation unit side body 2 and the display unit side body 3 are connected to each other through a connection unit 4 having a biaxial hinge mechanism, and the mobile phone 1 can be deformed into an open state and a closed state. In each closed state, the display unit side body 3 can be switched between a front state and a back state.

  Here, the closed state is a state in which both housings are arranged so as to overlap each other, and the open state is a state in which both housings are arranged so as not to overlap each other. The front state in the open state is a display 30 (display unit) disposed on a surface 3A of the display unit side body 3 to be described later, and an operation key group 11 disposed on the surface 2A of the operation unit side body 2. Are arranged so as to face the same side (see FIG. 1), and the back state in the open state refers to the display 30 in the display unit side body 3 and the operation key group 11 in the operation unit side body 2. The state (refer FIG. 7) arrange | positioned so that may face the other side. The front state in the closed state is a state in which the display 30 in the display unit side body 3 is arranged so as to face the operation key group 11 in the operation unit side body 2 (see FIG. 5). The back state in is a state in which the display 30 in the display unit side body 3 is exposed without facing the operation key group 11 in the operation unit side body 2 (see FIG. 8).

  The outer surface of the operation unit side body 2 includes a front case 2a and a rear case 2b. The operation unit side body 2 exposes, on the front case 2a side, an operation key group 11 and a voice input unit 12 as a microphone to which a voice uttered by a user of the mobile phone 1 is input. Configured. Here, the operation key group 11 includes a function setting operation key 13 for operating various functions such as various settings, a telephone book function, and a mail function, and a numeric keypad for inputting numbers such as telephone numbers and characters such as mail. Input operation keys 14 and the like, and a determination operation key 15 for performing determinations in various operations, scrolling in the vertical and horizontal directions, and the like. The voice input unit 12 is disposed on the outer end side opposite to the connection unit 4 side in the longitudinal direction of the operation unit side body 2. That is, the voice input unit 12 is arranged on one outer end side when the mobile phone 1 is in the open state.

  Each key constituting the operation key group 11 is predetermined according to a deformed state such as an open / close state and a front / back state of the operation unit side body 2 and the display unit side body 3 and the type of application being activated. Function is assigned. In the mobile phone 1, when each key constituting the operation key group 11 is pressed by the user, an operation corresponding to the function assigned to each key is executed.

  On one side surface of the operation unit side body 2, as shown in FIG. 2A, an interface 16 for transmitting / receiving data to / from an external device, a headphone / microphone terminal 17, and a removable external memory An interface 18 and a charging terminal 19 for charging the battery are provided. The interface 16, the headphone terminal / microphone terminal 17, and the interface 18 are covered with a dust-proof cap that can be attached and detached when not in use.

  On the other side of the operation unit side body 2, as shown in FIG. 2B, a pair of side keys 20, an operation key 21 used at the time of imaging, and a broadcast wave whose radio wave reception angle can be adjusted. A receiving antenna 22 is arranged. A predetermined function is assigned to the side key 20 in accordance with a deformed state such as an open / close state and a front / back state of the operation unit side body 2 and the display unit side body 3 and the type of the activated application. Here, similarly to the above, when the side key 20 is pressed by the user, an operation corresponding to the function assigned to the side key 20 in the mobile phone 1 is executed.

  As shown in FIG. 3, a camera unit 23 that captures an image of a subject and a light unit 24 that irradiates the subject with light are disposed in the rear case 2 b of the operation unit side body 2. The camera unit 23 and the light unit 24 are arranged on the inner end side on the connection unit 4 side in the operation unit side body 2. Further, the rear case 2b in the operation unit side body 2 is formed with an opening 92a for mounting the battery 90 in the battery housing portion 92, and the battery lid 25 is disposed so as to close the opening 92a.

  Moreover, the upper end part of the operation part side housing | casing 2 and the lower end part of the display part side housing | casing 3 are connected via the connection part 4 provided with a biaxial hinge mechanism, as shown in FIGS. As shown in FIG. 3, the sub operation key group 33 is arranged in a line in the width direction (short direction) of the mobile phone 1 on one surface (back surface) of the connecting portion 4. Each of the keys constituting the sub operation key group 33 depends on a deformed state such as an open / closed state or a front / back state of the operation unit side body 2 and the display unit side body 3 and the type of application being activated. Predetermined functions are assigned. In the mobile phone 1, when each key constituting the operation key group 11 is pressed by the user, an operation corresponding to the function assigned to each key is executed.

  The outer surface of the display unit side body 3 includes a front case 3a and a rear case 3b. The front case 3a in the display unit side body 3 is arranged so as to expose a display 30 having a predetermined shape for displaying various information and a sound output unit 31 as a receiver for outputting sound on the other party side of the call. Is done. Here, the audio output unit 31 is disposed on the outer end side opposite to the connection unit 4 in the longitudinal direction of the display unit side body 3. That is, the audio output unit 31 is arranged on the other end side when the mobile phone 1 is in the open state.

  In addition, a sub display 32 for displaying various types of information is exposed in the rear case 3 b of the display unit side body 3. Each of the display 30 and the sub-display 32 includes a liquid crystal panel, a drive circuit that drives the liquid crystal panel, and a light source unit such as a backlight that emits light from the back side of the liquid crystal panel.

  Here, the mobile phone 1 includes state detection means for detecting the open / closed state and the front / back state of the mobile phone 1 in the closed state. The state detection means includes one hall element 6 as a magnetic sensor disposed in the operation unit side housing 2 as the first housing, and two pieces disposed in the display unit side housing 3 as the second housing. It is comprised by the magnets 7a and 7b. The Hall element 6 detects both the magnetic force of the S pole and the magnetic force of the N pole, and detects the magnitude of the magnetic force.

  The hall element 6 and the two magnets 7a and 7b are arranged so as to be separated from each other in the open state, and so that the hall element 6 and one magnet overlap in the thickness direction of the housing in the closed state. The hall element 6 detects the open / closed state and the closed / closed state of the mobile phone 1 based on the direction of magnetic force (S pole or N pole) emitted from the magnets 7a and 7b and the magnitude of the magnetic force.

  Next, the structure of the connecting portion 4 and the deformed state of the mobile phone 1 will be described with reference to FIGS. FIG. 4 shows a perspective view in a state where the mobile phone 1 is opened. FIG. 5 is a plan view of a state in which the display unit side body 3 and the operation unit side body 2 of the mobile phone 1 are closed from the state shown in FIG. Indicates. FIG. 6 is a perspective view showing a state in which the display unit side body 3 of the mobile phone 1 is rotated by a predetermined angle around the rotation axis β of the connecting unit 4 from the state shown in FIG. FIG. 7 is a perspective view showing a state in which the display unit side body 3 of the mobile phone 1 is rotated by 180 ° about the rotation axis β of the connecting unit 4 from the state shown in FIG. FIG. 8 is a perspective view showing a state in which the display unit side body 3 of the mobile phone 1 is closed and rotated around the opening / closing axis α of the connecting unit 4 from the state shown in FIG.

  The connecting unit 4 connects the operation unit side body 2 and the display unit side body 3 so as to be freely opened and closed at an arbitrary angle around the opening / closing axis α, and at an arbitrary angle around the rotation axis β. A biaxial hinge mechanism that is pivotably connected is provided.

  The connecting portion 4 is connected to the upper end portion of the operation unit side body 2 by an open / close connecting member (not shown) on one end 4a side, and is connected to the upper end portion of the display unit side case 3 by a rotating connecting member (not shown) on the other end 4b side. It is connected to the lower end.

  A convex opening / closing part 4 c is formed at one end 4 a of the connecting part 4 so as to protrude vertically from the surface of the connecting part 4. A concave cutout portion 5 into which the convex opening / closing portion 4c is inserted is formed at the upper end portion of the operation unit side body 2.

  A hole A (not shown) is formed on each side of the opening / closing portion 4c in the opening / closing axis α direction. Moreover, a hole B (not shown) is formed on both inner side surfaces of the notch portion 5 of the operation unit side body 2. Then, in a state where the convex opening / closing part 4c is inserted into the concave cutout part 5, the hole A and the hole B are disposed so as to face each other in close proximity, and the hole A A cylindrical opening / closing connecting member is inserted through both of the holes B. Thereby, the operation unit side body 2 and the display unit side body 3 are connected so as to be openable and closable. The opening / closing part 4c is not particularly limited to a convex shape as long as the opening / closing part 4c is inserted into the upper end part of the operation unit side body 2, and the shape of the upper end part of the operation unit side body 2 is also concave. Not limited to.

  Moreover, the other end 4b side of the connection part 4 and the lower end part of the display part side housing | casing 3 are rotatably connected by the rotation connection member which is not shown in figure. A hole C (not shown) is formed on the side surface of the connecting unit 4 on the display unit side body 3 side. A hole D (not shown) is formed on the side surface of the display unit side body 3 on the connection unit 4 side. Then, the rotation connecting member is inserted into both the hole C and the hole D, so that the operation unit side body 2 and the display unit side body 3 can rotate about the rotation axis β. Connected. That is, the operation unit side body 2 and the display unit side body 3 are connected so that the front and back states of the display unit side body 3 can be switched.

  As described above, in the mobile phone 1, the operation unit side body 2 and the display unit side body 3 are connected by the connection unit 4 so as to be opened and closed and rotated. Accordingly, the mobile phone 1 is opened or closed by opening and closing the operation unit side body 2 and the display unit side body 3 about the opening / closing axis α or by rotating about the rotation axis β. It can be transformed into various states.

  For example, the cellular phone 1 in the closed state in which the operation unit side body 2 and the display unit side body 3 overlap each other as shown in FIG. 5 is opened and closed in each of the operation unit side body 2 and the display unit side body 3. The end on the side opposite to the axis α is deformed so as to open around the opening / closing axis α so as to be separated from each other, whereby the operation unit side body 2 and the display unit side body 3 shown in FIGS. Can be opened without overlapping each other.

  On the other hand, the mobile phone 1 in the open state shown in FIGS. 1 to 4 is opened and closed so that the ends opposite to the opening and closing shafts α of the operation unit side body 2 and the display unit side body 3 approach each other. 5 can be brought into the closed state shown in FIG.

  Further, in the open state shown in FIGS. 1 to 4, as shown in FIG. 6, the display unit side body 3 can be rotated around the rotation axis β. Furthermore, the front and back state of the display unit side body 3 can be switched by further rotating the display unit side body 3 from the state of FIG. 6 around the rotation axis β. Specifically, the display 30 disposed on the surface 3A of the display unit side body 3 shown in FIGS. 1 to 4 and the operation key group 11 disposed on the surface 2A of the operation unit side body 2 are on the same side. As shown in FIG. 7, the display unit 3 is rotated 180 degrees around the rotation axis β from the open state facing the display, and the display disposed on the surface 3 </ b> A of the display unit side body 3. 30 and the operation key group disposed on the surface 2A of the operation unit side body 2 can be set in the open state facing the opposite side.

  And the mobile telephone 1 can be made into the closed state shown in FIG. 8 by deform | transforming the display part side housing | casing 3 in the state shown in FIG. In other words, the cellular phone 1 has the display unit shown in FIG. 8 from the closed state in which the display 30 in the display unit side body 3 shown in FIG. 5 is arranged to face the operation key group 11 in the operation unit side body 2. The display 30 in the side housing 3 can be transformed into a closed state in which the display 30 is exposed without facing the operation unit side housing 2.

  Hereinafter, as shown in FIG. 7, a state in which the display 30 faces the same direction as the rear case 2 b is referred to as a “first open state”. Further, as shown in FIG. 8, a state in which the mobile phone 1 is closed with the display 30 facing the same direction as the front case 2a is referred to as a “first closed state”.

  In the present embodiment, the cellular phone 1 that can be folded by the connecting portion 4 is described. However, the cellular phone 1 is not foldable, and the operation unit side body 2 and the display unit side body 3 are overlapped. A rotation (revolver) type in which one housing is rotated about an axis along the alignment direction may be used, and the display unit side body 3 can be slid in the case lengthwise direction with respect to the operation unit side body 2. It may be a sliding type.

  FIG. 9 is a block diagram schematically showing main components of the mobile phone 1.

  The operation key group 11, the audio input unit 12, the audio output unit 31, the display 30, the sub display 32, and the antenna 22 are as described above. These components are controlled by the control unit 110 disposed in the operation unit side body 2.

  For example, when a character is input by the user, the control unit 110 receives an input from the operation key group 11 and performs a calculation process according to the input to display the character on the display 30 or the sub-display 32. In addition, the control unit 110 receives a voice signal from the voice input unit 12 and transmits the voice signal subjected to modulation processing to a not-shown call antenna to the outside. Note that the control unit 110 does not perform all of the display operation of the display 30 in the state illustrated in FIG. 5, that is, in the closed state in which the display 30 and the operation key group 11 face each other.

  In this manner, the control unit 110 performs signal conversion and calculation processing by interposing between each component, and causes each component to perform an appropriate operation.

  The loop antenna (antenna unit) 101 and the IC tag 102 are also connected to the control unit 110 in the same manner as other components. The loop antenna 101 is made of copper wire as a raw material, and forms a substantially rectangular coil. The loop antenna 101 is housed in the display unit side body 3 so as to face the back surface part that is the back side of the display area of the display 30 described above. The loop antenna 101 is connected to the control unit 110 via the IC tag 102. The loop antenna 101, the IC tag 102, and the control unit 110 constitute a communication unit. As described with reference to FIGS. 16 and 17, the IC tag 102 is activated by a current flowing in the loop antenna 101 induced by electromagnetic induction of the R / W device 200 (external device). Further, the IC tag 102 can be activated without being supplied with current from the loop antenna 101 under the control of the control unit 110. For example, when information is transmitted / received between two mobile phones having the loop antenna 101, the mobile phone 1 first transmits electromagnetic waves in this way.

  Hereinafter, the state in which the mobile phone 1 performs reception processing of electromagnetic waves from the R / W device 200 by non-contact communication is referred to as “response mode”. In addition, the state when the mobile phone 1 performs a transmission process of electromagnetic waves by non-contact communication when the IC tag 102 is activated by the control of the control unit 110 is referred to as “output mode”.

  The controller 110 automatically activates the response mode when the mobile phone 1 is turned on. When the control unit 110 receives a predetermined input from the operation key group 11, the control unit 110 activates the output mode. The predetermined input described above is an input made, for example, when the user of the mobile phone 1 sends a profile to another mobile phone. That is, in the mobile phone 1, when no other application such as a standby state is being executed, the control unit 110 always sets the communication unit to the response mode.

  The mobile phone 1 also includes a storage unit 108. For example, the storage unit 108 stores an address book in which a plurality of sets of names, telephone numbers, mail addresses, and the like are stored. Further, a program and data of an application executed by the control unit 110 are also stored.

  In addition, the storage unit 108 stores the coordinates of the optimal communication location of the loop antenna 101 measured after the mobile phone 1 is assembled and then the mobile phone 1 is assembled. The optimal communication location and coordinates will be described in detail later.

  FIG. 10 is a schematic view of the mobile phone 1 in the “first open state” shown in FIG. 7 as seen from the back side. In order to make the figure easy to understand, the size of the display 30 is drawn smaller than the actual size. The loop antenna 101 and the IC tag 102 described above are provided in the display unit side body 3. The loop antenna 101 is arranged in parallel with the display 30. The display 30 arranged in parallel with the loop antenna 101 is arranged at substantially the center of the loop antenna 101.

  The IC tag 102 is arranged in the housing of the operation unit side body 2 on the side closer to the connecting unit 4 than the loop antenna 101, that is, closer to the operation unit side body 2. As described above, the IC tag 102 is electrically connected to the loop antenna 101.

  The control unit 110 is disposed in the operation unit side body 2. The control unit 110 is electrically connected to the IC tag 102, the display 30, and the sub operation key group 33 through a cable arranged in the coupling unit 4. When the mobile phone 1 is in the “output mode”, the control unit 110 sends an electrical signal to the IC tag 102 via the cable to activate the IC tag 102.

  Hereinafter, the operation of the mobile phone 1 when the output mode is operating will be described with reference to FIG.

  FIG. 11 is a flowchart showing the processing of the mobile phone 1 when in the output mode. Hereinafter, the steps will be described in order.

<Step S1101>
As described above, the control unit 110 is always in the response mode when the mobile phone 1 is in a form other than the closed state in which the display 30 and the operation key group 11 face each other. However, for example, when an input indicating that data is transmitted from the user is received from the operation key group 11, the control unit 110 switches the communication unit to the output mode. Specifically, the control unit 110 activates the IC tag 102. Then, as the IC tag 102 is activated, an electromagnetic wave starts to be output from the loop antenna 101 to the outside.

<Step S1102>
The control unit 110 calls “output mode coordinates (second coordinates) data stored in the storage unit 108. This“ output mode coordinates ”is, for example, (X, Y) = (2 mm, 3 mm) is stored in the storage unit 108 as two-dimensional coordinate data.

  This coordinate is a coordinate that indicates the location where the electromagnetic wave radiated from the loop antenna 101 is radiated most stably (communication optimum location), which is found by inspecting the mobile phone 1 at the time of manufacture. That is, in the production line, after the assembly of the mobile phone 1 is completed, the mobile phone 1 is subjected to an inspection for checking the optimum communication location. At this time, not only the coordinates in the output mode but also the coordinates in the response mode are stored in the storage unit 108. Then, the coordinates of the optimum communication location in the output mode and the response mode are stored in the storage unit 108 of the assembled mobile phone 1. Of the coordinates stored at this time, the coordinates for the output mode, which is the second coordinates, are called from the storage unit 108, so that the manufactured mobile phone 1 can display a mark at an appropriate location. Become.

<Step S1103>
The control unit 110 displays a mark (predetermined symbol) at the position of the coordinate data on the display 30. This is shown in FIG.

  A star drawn with a solid line is a predetermined symbol displayed in step S1103. In the present embodiment, the predetermined symbol is an asterisk. However, for example, a character display such as “good communication position” or another graphic symbol may be used. Also, as shown in FIG. 12, in the present embodiment, the coordinate setting method includes the display 30 as the origin, the longitudinal direction of the display unit side body 3 as the X axis direction, and the short side direction of the display unit side body 3 as the Y axis. Although the direction is set, the embodiment is not limited to this. For example, coordinate setting may be performed with the corner of the display 30 (the lower right side of the display 30 in FIG. 12) as the origin.

<Step S1104>
When an asterisk drawn with a solid line as a predetermined symbol is displayed on the display 30, the control unit 110 checks whether transmission / reception of information in the output mode is completed. If the transmission / reception of information in the output mode has not ended (S1104 / N), the control unit 110 returns to the step S1103 and continues to display predetermined symbols on the display 30. If transmission of information in the output mode is completed (S1104 / Y), the control unit 110 shifts to a response mode (that is, a state in which the loop antenna 101 waits for reception of electromagnetic waves from the outside).

<Step S1105>
When shifting to the response mode, the control unit 110 obtains the optimum coordinate value (first coordinate) in the response mode from the storage unit 108. This is because the center of the resonance frequency is different between the transmission mode intended for transmission and the reception mode intended for reception. Specifically, the control unit 110 changes the resonance frequency by switching whether or not the capacitor is connected to the loop antenna 101 with a transistor.

<Step S1106>
The control unit 110 displays a predetermined symbol at the best coordinates of the display 30 in the response mode.

<Step S1107>
In S1106, when a predetermined symbol for the response mode is displayed on the display 30, the control unit 110 ends the output mode. That is, as described above, unless the output mode is operated by the user, the control unit 110 always sets the communication unit in the response mode and waits for reception of electromagnetic waves radiated from the R / W device 200 or another mobile phone. Become.

  FIG. 13 is a diagram illustrating a state in which the mobile phone 1 receives information from the R / W device 200 in the response mode. What is indicated by a broken line is a loop antenna 101 and an IC tag 102 housed in the display unit side body 3. At this time, the mobile phone 1 is in the “first closed state”. At this time, the user of the mobile phone 1 brings the mobile phone 1 and the R / W device 200 into contact with each other so that a predetermined symbol displayed on the display 30 and a mark written in advance on the R / W device 200 overlap each other. As a result, communication between the mobile phone 1 and the R / W device 200 at the optimal communication location can be realized.

  In the above-described embodiment, the loop antenna 101 and the IC tag 102 are arranged inside the display unit side body 3, but the loop antenna 101 and the IC tag 102 are arranged inside the operation unit side body 2. May be. FIG. 14 shows an exploded perspective view of the operation unit side body 2 when such an embodiment is implemented. In the present embodiment, the loop antenna 101 and the IC tag 102 are disposed so as to be attached to the rear case 2b. Further, the IC tag 102 is disposed on the operation unit side body 2 on the side closer to the connection unit 4 than the loop antenna 101.

  FIG. 15 is a diagram showing a state where the mobile phone 1 of the embodiment shown in FIG. 14 is used and the R / W device 200 communicates with the mobile phone 1. At this time, the mobile phone 1 is used in the “first closed state”. In the present embodiment, the user approaches the R / W device 200 with a predetermined symbol displayed on the display 30 facing upward. Therefore, according to the above-described embodiment, the user can easily recognize the position of the predetermined symbol on the display 30 and can communicate with the R / W device 200 more easily.

  As described above, by specifically displaying the location of the optimal communication position on the display, the mobile phone 1 performs more reliable and simple communication with the other communication devices to the user using the RFID technology. It becomes possible to make it.

  In the present embodiment, the mobile phone 1 is configured to switch to the output mode by receiving a predetermined input from the operation key group 11 in the always-response mode, but the present invention is not limited to this. For example, in the response mode as well as the output mode, the control unit 110 may change the communication unit to the output mode by receiving a predetermined input from the operation key group 11.

  Further, although the present embodiment has been described by taking a mobile phone as an example, for example, the same technique may be used also in an R / W device having a display.

It is a front view in the state where cellular phone 1 in this embodiment was opened. (A) The left view in the state which opened the mobile telephone 1 is shown. (B) The right view in the state which opened the mobile telephone 1 is shown. The rear view in the state which opened the mobile telephone 1 is shown. A perspective view in the state where cellular phone 1 was opened is shown. FIG. 2 is a plan view showing a state in which the display unit side body 3 and the operation unit side body 2 of the mobile phone 1 are closed and rotated around the opening / closing axis α of the connecting unit 4. The perspective view of the state which rotated the display part side housing | casing 3 of the mobile telephone 1 the predetermined angle centering | focusing on rotation axis | shaft (beta) of the connection part 4 is shown. The perspective view of the state (1st open state) which rotated the display part side housing | casing 3 of the mobile telephone 1 180 degrees centering | focusing on rotation axis | shaft (beta) of the connection part 4 is shown. The perspective view of the state (1st closed state) which closed and rotated the display part side housing | casing 3 of the mobile telephone 1 centering on the opening-and-closing axis | shaft (alpha) of the connection part 4 is shown. FIG. 2 shows a block diagram of main components of the mobile phone 1. The rear view of the mobile telephone 1 of the 1st open state shown in FIG. 7 is shown. The flowchart which showed the mode of switching of the response mode and output mode by the control part 110 is shown. In the rear view of the mobile phone 1 in the first open state, a state when a predetermined symbol is displayed on the display 30 is shown. A state when the R / W device 200 communicates with the mobile phone 1 in the first closed state is shown. An exploded perspective view of the operation unit side body 2 when the loop antenna 101 and the IC tag 102 are arranged in the operation unit side body 2 is shown. A state in which the R / W device 200 communicates with the mobile phone 1 in the embodiment in which the loop antenna 101 and the IC tag 102 are arranged in the operation unit side body 2 is shown. 2 is a diagram showing a state where an R / W device 200 communicates with a mobile phone 900. FIG. It is a figure which shows that the mark which shows the optimal communication location described in the mobile telephone 900 becomes a place which changes with resonance frequencies.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Mobile telephone 101 ... Loop antenna 102 ... IC tag 108 ... Memory | storage part 11 ... Operation key group 110 ... Control part 12 ... Voice input part 13 ... Function setting Operation key 14 ... Input operation key 15 ... Determine operation key 16 ... Interface 17 ... Headphone / microphone terminal 18 ... Interface 19 ... Charge terminal 2 ... Operation unit side body 2a ... Front case 2A ... Surface 20 ... Side key 200 ... R / W device 21 ... Operation key 22 ... Antenna 23 ... Camera part 24 ... Light part 25 ... Battery lid 2b Rear case 3 Display unit side housing 3a Front case 3A Front surface 30 Display 31 Sound output unit 32 Sub display 33・Operation key group 3b ... rear case 4 ... connecting part 4a ... one end 4b ... the other end 4c ... opening and closing part 5 ... notch part 6 ... Hall elements 7a, 7b ..Magnet 90 ... Battery 92 ... Battery housing portion 92a ... Opening

Claims (3)

A portable communication device that performs non-contact communication with an external device,
A communication unit capable of non-contact communication with the external device via an antenna unit disposed;
A display unit having a back part, the back part being arranged facing the antenna part;
In the display area of the display unit, a control unit that displays a predetermined symbol on a communication optimal location for the non-contact communication with the external device;
A portable communication device comprising: A storage unit storing first coordinates indicating the optimal communication location for the reception process in the non-contact communication and second coordinates indicating the optimal communication location for the transmission process in the non-contact communication; ,
The control unit displays the symbol at a position corresponding to the first coordinate of the display unit during the reception process, and displays the symbol at a position corresponding to the second coordinate of the display unit during the transmission process. The mobile communication device according to claim 1, wherein the mobile communication device is displayed. A display method when performing non-contact communication with an external device,
Perform non-contact communication with the external device via the antenna unit,
Displaying a predetermined symbol at the optimal communication location for the non-contact communication with the external device of the display unit arranged with the back surface facing the antenna unit,
A display method characterized by that.

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