JP2010074605A - Electrode structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electrode structure preventing the simultaneous contact of a communication electrode and a ground electrode. <P>SOLUTION: The electrode structure includes a pasting type communication electrode 30 capable of being pasted on the outer wall of a portable type box body 10 so as to correspond to the communication electrode 103 for an electric-field communication arranged on the inner wall of the portable type box body 10 and a pasting type ground electrode 50 capable of being pasted on the outer wall of the portable type box body 10 so as to correspond to the ground electrode 104 for the electric-field communication arranged on the inner wall of the portable type box body 10 while being separated from the communication electrode 103. Consequently, the positional relationship of the communication electrode and the ground electrode is provided visually, and the simultaneous contact of the communication electrode and the ground electrode can be prevented. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a technique of an electrode structure of a communication electrode and a ground electrode used for electric field communication.

  2. Description of the Related Art Conventionally, there has been proposed an electric field communication apparatus that induces an electric field based on data to be transmitted to an electric field transmission medium that transmits an electric field and performs data communication by detecting the electric field induced in the electric field transmission medium (patent) Reference 1).

Such an electric field communication device is adapted to a portable communication terminal such as a mobile phone or a PDA. Specifically, a communication circuit is arranged in the communication terminal and a communication electrode or a ground electrode is arranged on the inner wall of the communication terminal. When a user touches the communication terminal, it is possible to induce an electric field from the communication electrode to the human body and transmit data.
JP 2003-324395 A

  However, since most of the communication terminals in circulation are colored and it is difficult to visually recognize the positions of the communication electrode and the ground electrode through the appearance of the communication terminal, the communication electrode and the ground electrode are touched at the same time. Occurs, and the communication efficiency in electric field communication is reduced.

  This invention is made | formed in view of the above, and makes it a subject to provide the electrode structure which prevents that a communication electrode and a ground electrode contact simultaneously.

  The present invention according to claim 1 is a paste-type communication electrode that can be attached to an outer wall of the casing so as to correspond to a communication electrode for electric field communication disposed on an inner wall of the casing, and the communication electrode for electric field communication And a paste-type ground electrode that can be attached to the outer wall of the housing so as to correspond to the ground electrode for electric field communication disposed on the inner wall of the housing.

  According to the present invention, the pasted communication electrode that can be attached to the outer wall of the housing to correspond to the communication electrode for electric field communication disposed on the inner wall of the housing and the communication electrode for electric field communication are separated from the housing. Since it has an affixing type ground electrode that can be affixed to the outer wall of the housing so as to correspond to the ground electrode for electric field communication arranged on the inner wall of the body, the positional relationship between the communication electrode and the ground electrode is visually provided, and communication It can prevent contacting an electrode and a ground electrode simultaneously.

  The gist of the present invention described in claim 2 is that a decorative material is adhered to the surface of the adhesive communication electrode so that the adhesive communication electrode protrudes.

  According to a third aspect of the present invention, there are a plurality of the pasted communication electrodes, and the plurality of pasted communication electrodes are pasted on the casing so that the protruding regions of the pasted pasted communication electrodes adjacent to each other overlap each other. This is the gist.

  The gist of the present invention described in claim 4 is that a protruding region of the pasted communication electrode is cut.

  According to a fifth aspect of the present invention, there are a plurality of the pasted communication electrodes, and the plurality of pasted communication electrodes are arranged in the housing so that the cut surfaces of the protruding regions in the adjacent pasted communication electrodes are in contact with each other. The gist is attached to the body.

  The gist of the present invention described in claim 6 is that a decorative material is pasted on the surface of the pasted ground electrode so that the pasted ground electrode protrudes.

  The present invention described in claim 7 has a plurality of the pasting-type ground electrodes, and the plurality of pasting-type ground electrodes are pasted on the casing so that the protruding regions of the adjacent pasting-type ground electrodes overlap each other. This is the gist.

  The gist of the present invention described in claim 8 is that a protruding region of the pasted-type ground electrode is cut.

  The present invention according to claim 9 includes a plurality of the pasting-type ground electrodes, and the plurality of pasting-type ground electrodes are arranged in the housing so that cut surfaces of the protruding regions of the adjacent pasting-type ground electrodes are in contact with each other. The gist is attached to the body.

  ADVANTAGE OF THE INVENTION According to this invention, the electrode structure which prevents contacting a communication electrode and a ground electrode simultaneously can be provided.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a state diagram showing a state in which the electrode structure according to the present embodiment is attached to a portable housing. Inside the portable housing 10, there are a communication circuit 101 for electric field communication, a communication electrode 103 for electric field communication electrically connected to the communication circuit 101 via a lead wire 102a, and a lead wire 102b. A ground electrode 104 for electric field communication electrically connected to the communication circuit 101, and an insulator 105a and an insulator 105b formed of a transparent resin or the like are disposed.

  The communication electrode 103 is disposed on one inner wall (the upper inner wall shown in FIG. 1) via the insulator 105a, and the ground electrode 104 is separated from the communication electrode 103 via the insulator 105b. It is arranged on the other inner wall (the lower inner wall shown in FIG. 1) of the portable housing 10. The insulator 105a functions as a mark for the communication electrode 103, that is, a function for allowing the user to recognize where the communication electrode 103 is arranged inside the portable housing 10, and the insulator 105b It functions as a mark for the ground electrode 104, that is, a function for allowing the user to recognize where the portable housing 10 is located. Furthermore, the insulator 105a and the insulator 105b are provided for the purpose of electric shock of the user, prevention of surge to the circuit, and prevention of static electricity from the outside. However, the communication electrode 103 is not provided without the insulator 105a and the insulator 105b. In addition, the ground electrode 104 may be disposed on the surface of the portable housing 10, and the adhesive communication electrode 30 and the adhesive ground electrode 50 may be directly connected to the communication electrode 103 and the ground electrode 104, respectively.

  The affixed communication electrode 30 is affixed to the outer wall of the portable casing 10 so as to correspond to the communication electrode 103, while the affixed ground electrode 50 is affixed to the outer wall of the portable casing 10 so as to correspond to the ground electrode 104. It is affixed to. That is, since the affixed communication electrode 30 and the affixed ground electrode 50 are affixed to the outer wall of the portable housing 10, the positions of the communication electrode and the ground electrode are visually provided to the user. Simultaneous contact can be prevented.

  FIG. 2 is a side view showing a side surface of the pasted communication electrode. The pasted communication electrode 30 has a layered structure in which an electrode pasting sealing material 301 for pasting an electrode to the portable housing 10 and an electrode 302 acting as a communication electrode are overlapped. By using the sealing material, the electrode 302 can be attached to the outer wall of the portable housing 10.

  FIG. 3 is a side view showing a side surface of a pasted communication electrode (first example) on which a decorative material is pasted. 2 has a structure in which a decorative material sticking seal material 701 for attaching a decorative material to the electrode 302 and a decorative material 702 as “deco” are further laminated on the surface of the adhesive communication electrode 30 shown in FIG. Note that “deco” is a decoration material used when decorating the appearance of a mobile phone or the like, and is composed of materials such as rhinestones, beads, and cameos. Mobile phones with “Deco” are often commonly referred to as “Deco mobile”.

  Here, as shown in FIG. 4, the decorative material 702 is an electrode so that the pasted communication electrode 30 protrudes to the outside when viewed from the upper side (when viewed from the lower side from the upper side shown in FIG. 3). 302 is attached. Then, as shown in FIG. 5, the protruding regions of the electrode 302a and the electrode 302b in the adjacent pasting-type communication electrodes are overlapped with each other, so that the electrode sticking sealant 301a exists between the electrodes 302a and 302b. The electrodes can be electrically connected using capacitive coupling. In other words, a plurality of pasted communication electrodes 30 can be appropriately pasted to the outer wall of the portable housing 10 as appropriate, the communication electrodes can be extended, and the entire communication electrode is formed according to the user's preference. can do.

  In addition, the sticking type communication electrode 30 is provided with a cut line that can cut the electrode 302 in the protruding region (see FIG. 4). By cutting off the electrode in the protruding region in this cut-off line, it is possible to form pasted communication electrodes 30 having various shapes as shown in FIGS. Then, as shown in FIG. 7, the electrodes 302a and 302b in the adjacent pasted communication electrodes can be electrically connected by disposing the protruding surfaces of the protruding regions in contact with each other. It becomes. That is, even when the protruding region is cut out, similarly to the above-described effect, a plurality of pasted communication electrodes 30 can be appropriately pasted to the outer wall of the portable housing 10 as appropriate. In addition to being able to be extended, the entire communication electrode can be formed in accordance with the user's preference.

  FIG. 8 is a side view showing a side surface of a pasted communication electrode (second example) on which a decorative material is pasted. The pasted communication electrode 30 has a structure having an electrode / decorative material pasting seal material 303 for pasting the electrode and the decorating material to the portable housing 10, an electrode 302 acting as a communication electrode, and a decorating material 702. ing.

  Here, as shown in FIG. 9, the decorative material 702 is an electrode so that the pasted communication electrode 30 protrudes to the outside when viewed from the upper side (when viewed from the lower side from the upper side shown in FIG. 8). 302 is attached. Then, the electrodes 302 can be directly connected to each other by overlapping the protruding regions of the electrodes 302 of the adjacent pasted communication electrodes 30. In other words, a plurality of pasted communication electrodes 30 can be appropriately pasted to the outer wall of the portable housing 10 as appropriate, the communication electrodes can be extended, and the entire communication electrode is formed according to the user's preference. It becomes possible to do.

  Also in the case of the pasted communication electrode 30 of the second example, as shown in FIG. 9, a cut-out line capable of cutting the electrode 302 in the protruding region is provided. By cutting off the electrode in the protruding area in this cut-off line, it is possible to form the pasted communication electrodes 30 having various shapes as shown in FIGS. 10 (a) to 10 (c). And it becomes possible to connect these electrodes electrically by arrange | positioning so that the cut surface of each protrusion area | region of the adjacent sticking type | mold communication electrode 30 may mutually contact. That is, even when the protruding region is cut out, similarly to the above-described effect, a plurality of pasted communication electrodes 30 can be appropriately pasted to the outer wall of the portable housing 10 as appropriate. In addition to being able to be extended, the entire communication electrode can be formed in accordance with the user's preference.

  The structure of the pasting type communication electrode 30 described with reference to FIGS. 2 to 10 can also be applied to the pasting type ground electrode 50. Accordingly, as shown in FIG. 11, the sticky communication electrode 30 corresponding to the communication electrode 103 is extended in the holding position direction of the portable housing 10 (the direction of the region held by the user's hand) and the ground electrode 104. By extending the pasted-type ground electrode 50 corresponding to 1 to the peripheral region of the portable housing 10, it is possible to more reliably prevent the communication electrode and the ground electrode from being simultaneously contacted.

  In the embodiment shown in FIG. 1, the case where the adhesive communication electrode 30 and the adhesive ground electrode 50 are arranged on different outer wall surfaces of the portable housing 10 has been described. May be arranged on the same outer wall surface as shown in FIG. Further, when there are a plurality of communication electrodes 103 and a plurality of ground electrodes 104, as shown in FIG. 13 and FIG. 14, a plurality of pasted communication electrodes 30 and a pasted mold corresponding to the respective communication electrodes 103 and the ground electrodes, respectively. A similar effect can be obtained even with an electrode structure including the ground electrode 50.

  Finally, the processing operation of the communication circuit 101 described above will be described. FIG. 15 is a circuit configuration diagram showing a circuit configuration of a communication circuit. The communication circuit 101 is connected to the processing terminal A via the interface circuit 81. When the communication circuit 101 receives transmission data for transmission from the processing terminal A to another processing terminal A ′ via the interface circuit 81, the communication circuit 101 adjusts the signal amplitude of the transmission data by the level adjustment circuit 82, and then transmits the transmission data. The second communication electrode 103b functioning as a transmission electrode is supplied via the circuit 83.

  When the transmission data is supplied from the transmission circuit 83, the second communication electrode 103b induces an electric field corresponding to the transmission data in the electric field transmission medium 90. The induced electric field is transmitted through the human body as the electric field transmission medium 90 and is received by the receiving electrode of the other processing terminal A ′.

  On the other hand, the electric field detection optical unit 84 is supplied with the electric field received by the first communication electrode 103a functioning as a reception electrode, and changes the polarization of laser light separately generated in the electric field detection optical unit 84 using the electric field optical technique. After that, it is converted into an electrical signal. This electric signal is supplied with the processing terminal A via the interface circuit 81 after unnecessary noise is removed by the band limitation in the signal processing circuit 85 and the waveform is further shaped by the waveform shaping circuit 86. ing.

  Here, the ground electrode 104 shown in FIG. 1 is provided in the electric field detection optical unit 84 described with reference to FIG. FIG. 16 is a functional configuration diagram illustrating a functional configuration of the electric field detection optical unit in the communication circuit. The electric field detection optical unit 84 detects an electric field by an electro-optic technique using laser light and an electro-optic crystal, and includes a laser diode 61 that constitutes a laser light source and an electro-optic element 62 made of an electro-optic crystal. The electro-optical element 62 is sensitive to an electric field coupled in a direction perpendicular to the traveling direction of the laser light from the laser diode 61, and the optical characteristics, that is, the birefringence changes depending on the electric strength. The polarization of the laser beam is changed by the change of the birefringence.

  A first electrode 63 and a second electrode 64 are provided on both side surfaces of the electro-optic element 62 facing in the vertical direction in the drawing. The first electrode 63 and the second electrode 64 sandwich the traveling direction of the laser light from the laser diode 61 in the electro-optic element 62 from both sides, and couple the electric field at right angles to the laser light. Yes.

  The electric field detection optical unit 24 illustrated in FIG. 16 includes the same first communication electrode 103 a as illustrated in FIG. 15, and the first communication electrode 103 a is connected to the first electrode 63. Further, the second electrode 64 facing the first electrode 63 is connected to the same ground electrode 104 as shown in FIG. 1 and is configured to function as a ground with respect to the first electrode 63. When the first communication electrode 103a detects the electric field induced and transmitted by the electric field transmission medium, the first communication electrode 103a transmits the electric field to the first electrode 63 and couples to the electro-optic element 62 through the first electrode 63. It has become.

  The laser light output from the laser diode 61 is converted into parallel light through the collimator lens 65, and the laser light that has become parallel light is adjusted in polarization state by the first wave plate 66 and enters the electro-optical element 62. The laser light incident on the electro-optic element 62 propagates between the first electrode 63 and the second electrode 64 in the electro-optic element 62. During the propagation of the laser light, as described above, the first communication electrode When 103a receives the electric field transmitted by being induced by the electric field transmission medium, and this electric field is coupled to the electro-optic element 62 through the first electrode 63, the electric field is connected from the first electrode 63 to the ground electrode 104. The birefringence, which is the optical characteristic of the electro-optic element 62, is changed because it is formed toward the second electrode 64 and is perpendicular to the traveling direction of the laser light incident on the electro-optic element 62 from the laser diode 61, As a result, the polarization of the laser light changes.

  In this way, the laser light whose polarization has been changed by the electric field from the first electrode 63 in the electro-optical element 62 is adjusted in the polarization state by the second wave plate 67 and enters the polarization beam splitter 68. The polarization beam splitter 68 separates the laser light incident from the second wavelength plate 67 into P waves and S waves, and converts them into a change in light intensity. The laser beams separated into the P-wave component and the S-wave component by the polarization beam splitter 68 are condensed by the first condenser lens 69a and the second condenser lens 69b, respectively, and then the first photodiode 70a and the second photodiode 70a. The first and second photodiodes 70a and 70b are supplied to the photodiode 70b and convert the P-wave optical signal and the S-wave optical signal into respective electric signals and output them.

  As described above, the electric signal output from the first photodiode 70a and the second photodiode 70b is subjected to signal processing such as amplification and noise removal in the signal processing circuit 85 shown in FIG. The waveform is shaped at 86 and supplied to the processing terminal A via the interface circuit 81.

  FIG. 17 is a circuit configuration diagram showing another circuit configuration in the communication circuit. This communication circuit includes a communication circuit 101 to which a processing terminal A is connected, an electric field transmission medium 90 that mediates communication, a communication circuit 101 ′, and a processing terminal A ′ that is connected to the communication circuit 101 ′. ing. A case where communication is performed between the communication circuit 101 and the communication circuit 101 ′, data is transmitted from the communication circuit 101 and received by the communication circuit 101 ′ is taken as an example.

  The communication circuit 101 and the communication circuit 101 'have the same configuration. Although there is no difference in configuration between the two, for convenience of explanation, the same components are denoted by the same numbers, and the components included in the communication circuit 101 ′ are identified with “′”. Yes.

  The processing terminal A sends transmission data and a transmission / reception switching signal to the communication circuit 101. The transmission data is arbitrary data transmitted to the communication partner processing terminal A ′. The transmission / reception switching signal is a signal for instructing the communication circuit 101 to switch operation between transmission and reception.

  The communication circuit 101 sends received data to the processing terminal A. This received data is received data obtained by receiving data transmitted from the communication partner processing terminal A ′ to the processing terminal A via the communication circuit 101 ′ and the communication circuit 101. Note that transmission data, transmission / reception switching signals, and reception data are exchanged between the processing terminal A ′ and the communication circuit 101 ′ as well as between the processing terminal A and the communication circuit 101.

  Further, the communication circuit 101 includes a transmission unit for transmitting data and a reception unit for receiving data. The transmission unit includes a modulation circuit 40 for modulating transmission data with a carrier wave output from the oscillator 41 and an oscillator 41 for outputting the carrier wave. Further, the receiving unit includes a correction circuit 42 for determining and correcting whether the H level and the L level of the demodulated signal are inverted, a carrier wave reproduced by the carrier wave reproducing circuit 44, and the received signal. And a demodulating circuit 43 for reproducing data and a carrier wave reproducing circuit 44 for extracting a carrier wave from the received signal.

  The communication electrode 103 receives the data transmitted from the communication circuit 101 ′ and the function of transmitting the data transmitted from the communication circuit 101 to the communication circuit 101 ′, as in the case described with reference to FIG. It has a function. Even in the case of the electric field communication device having the communication circuit 101 shown in FIG. 17, the first communication electrode 103a functioning as a reception electrode and the second communication electrode 103b functioning as a transmission electrode are integrated into one communication. Each electrode may be configured by the electrode 103, or may have only one configuration of transmission or reception.

It is a state figure showing the state where the electrode structure concerning this embodiment was stuck on the portable case. It is a side view which shows the side surface of a sticking type | mold communication electrode. It is a side view which shows the side of the sticking type | mold communication electrode (1st example) which stuck the decoration material. It is a top view which shows the upper surface of the sticking type | mold communication electrode shown in FIG. FIG. 4 is a state diagram showing a state in which a plurality of pasted communication electrodes shown in FIG. It is a figure which shows the shape after cut | disconnecting the protrusion area | region of the sticking type | mold communication electrode shown in FIG. It is a state diagram which shows the state which made the some sticking type | mold communication electrode shown in FIG. 6 contact on the cut surface. It is a side view which shows the side of the sticking type | mold communication electrode (2nd example) which stuck the decoration material. It is a top view which shows the upper surface of the sticking type | mold communication electrode (1st example) shown in FIG. It is a figure which shows the shape after cut | disconnecting the protrusion area | region of the sticking type | mold communication electrode shown in FIG. It is a state figure showing a state at the time of arranging a plurality of pasting type communication electrodes and a plurality of pasting type ground electrodes in a portable case in succession. It is a state figure which shows the other state which affixed the electrode structure on the portable housing | casing. It is a state figure which shows the other state which affixed the electrode structure on the portable housing | casing. It is a state figure which shows the other state which affixed the electrode structure on the portable housing | casing. It is a circuit block diagram which shows the circuit structure of a communication circuit. It is a functional block diagram which shows the function structure of the electric field detection optical part in a communication circuit. It is a circuit block diagram which shows the other circuit structure in a communication circuit.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Portable housing 30 ... Paste type communication electrode 50 ... Paste type ground electrode 101 ... Communication circuit 102a, 102b ... Lead wire 103 ... Communication electrode 104 ... Ground electrode 105a, 105b ... Insulator 301, 301a ... Seal for electrode sticking Material 302, 302a, 302b ... Electrode 303 ... Sealing material for attaching electrode / decorative material 701 ... Sealing material for adhering decorative material 702 ... Decorating material

Claims (9)

An affixed communication electrode that can be affixed to the outer wall of the casing to correspond to a communication electrode for electric field communication disposed on the inner wall of the casing;
An affixed ground electrode that can be affixed to the outer wall of the casing so as to correspond to the ground electrode for electric field communication disposed on the inner wall of the casing apart from the communication electrode for electric field communication;
An electrode structure comprising:   The electrode structure according to claim 1, wherein a decoration material is pasted on a surface of the pasted communication electrode so that the pasted communication electrode protrudes. The pasted communication electrodes are plural,
The electrode structure according to claim 2, wherein the plurality of pasted communication electrodes are pasted on the casing so that protruding regions of adjacent pasted communication electrodes overlap each other.   The electrode structure according to claim 2, wherein a protruding region of the pasted communication electrode is cut. The pasted communication electrodes are plural,
5. The electrode structure according to claim 4, wherein the plurality of pasted communication electrodes are pasted on the casing such that cut surfaces of the protruding regions of adjacent pasted communication electrodes are in contact with each other.   2. The electrode structure according to claim 1, wherein a decoration material is pasted on a surface of the pasting type ground electrode so that the pasting type ground electrode protrudes. The pasting-type ground electrode is plural,
The electrode structure according to claim 6, wherein the plurality of pasted-type ground electrodes are pasted on the casing so that protruding regions of adjacent pasted-type ground electrodes overlap each other.   The electrode structure according to claim 6, wherein a protruding region of the pasted-type ground electrode is cut. The pasting-type ground electrode is plural,
The electrode structure according to claim 8, wherein the plurality of pasted-type ground electrodes are pasted on the casing so that cut surfaces of the protruding regions in the adjacent pasted-type ground electrodes are in contact with each other.

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