JP4753153B2 - Wireless communication system - Google Patents

Description

The present invention relates to a radio communication medium such as an IC card, and a wireless communication apparatus for writing and reading and power supply information to the wireless communication medium, a wireless communication system having a.

  For example, in a wireless communication system having a wireless communication medium such as an IC card and a wireless communication device such as a reader / writer for writing / reading information and supplying power to the wireless communication medium, operating power to the wireless communication medium Many systems and systems have been developed and widely used in order to supply and send / receive information. As power supply and information transmission / reception methods, there are a contact method using a connector and the like, a non-contact method such as an electromagnetic coupling method using a coil, an optical method, and a radio wave method.

  In general, in a wireless communication system using the electromagnetic coupling method, a wireless communication device and a wireless communication medium are arranged to face each other during communication. At this time, on the opposite surface of the wireless communication device that faces the wireless communication medium, a power coil for feeding is disposed in the center, a transmission data coil is disposed on one side, and a reception data coil is disposed on the other side. On the opposite surface facing the apparatus, a power receiving power coil is disposed at the center, a reception data coil is disposed on one side, and a transmission data coil is disposed on the other side. As a result, at the time of communication, the power supply data coil of the wireless communication apparatus and the power reception data coil of the wireless communication medium, the transmission data coil of the wireless communication apparatus and the reception data coil of the wireless communication medium, and the reception data coil and wireless of the wireless communication apparatus The transmission data coil of the communication medium is disposed opposite to the communication medium. Thereby, the power supply power from the wireless communication device side is supplied to the wireless communication medium, and information is transmitted and received between the wireless communication device and the wireless communication medium.

  As a wireless communication system using the electromagnetic coupling system having the above-described configuration, for example, the one described in Patent Document 1 is known. In this prior art, a front / back sensor for detecting a facing state of the wireless communication medium (portable information recording medium) to the wireless communication device (device main body) (whether the facing surface is front or back), and a detection signal from the front / back sensor Based on this, switching means for switching the channel of the transmission data coil and the reception data coil on the wireless communication apparatus side or the wireless communication medium side is provided. Thus, even when the wireless communication medium is placed opposite to the wireless communication device so that the one side and the other side of the opposite surface are opposite to each other during communication, the wireless communication device side or the wireless communication is switched by the switching means. By switching the transmission data coil and the reception data coil on the medium side, the transmission data coil and the reception data coil can be opposed to each other between the wireless communication device and the wireless communication medium. Therefore, it is possible to increase the degree of freedom of the arrangement of the wireless communication medium and the wireless communication device that can supply power to and transmit / receive information to / from the wireless communication medium, thereby improving the convenience of the user who uses the wireless communication medium. It can be done.

Japanese Patent No. 3491931

  As described above, in the wireless communication system of the above prior art, information can be transmitted and received even when the wireless communication medium is turned upside down, and user convenience can be improved. However, for this purpose, a front and back sensor is provided, and a circuit configuration for switching the channel between the transmission data coil and the reception data coil on the wireless communication apparatus side or the wireless communication medium side based on the detection signal from the front and back sensor is required. This complicates the circuit configuration.

An object of the present invention, a simple circuit configuration, to provide a non-line communication system that can improve the convenience of the user.

In order to achieve the above object, the first invention provides a wireless communication medium including a power receiving unit to which power is supplied and a medium side arrangement surface for arranging a medium side information transmitting / receiving unit for transmitting and receiving information, and the power receiving unit. Comprising: a power supply unit that supplies power to a unit; and a wireless communication device having a device side arrangement surface for arranging a device side information transmission / reception unit that performs transmission / reception of information with the medium side information transmission / reception unit. A wireless communication system that communicates between the wireless communication medium and a wireless communication device with a surface facing the device-side placement surface, wherein the device-side information transmission / reception unit is connected to the device-side placement surface on the device-side placement surface. The opposing portion facing the wireless communication medium is provided at both of a pair of line-symmetric positions that are line-symmetric with respect to the first straight line that bisects the first portion, and the length of the first linear direction is the first straight line. It becomes longer than the length that is almost perpendicular to The medium side information transmitting / receiving unit is provided at a position facing at the time of communication with any of the apparatus side information transmitting / receiving units provided at both of the line symmetric positions, and the power feeding unit is disposed at the line symmetric position. The apparatus is provided at an intermediate position between the apparatus-side information transmission / reception units provided on both sides, and the power reception unit is provided at a position facing the power supply unit during communication.

  In the first invention of the present application, at the time of communication between the wireless communication device and a wireless communication medium (for example, an IC card), the power supply power from the wireless communication device side is supplied from the power supply unit via the power receiving unit of the wireless communication medium. Then, information is transmitted and received between the device-side information transmitting / receiving unit of the wireless communication device and the medium-side information transmitting / receiving unit of the wireless communication medium. The power supply from the wireless communication device to the wireless communication medium and the transmission / reception of information between them are performed by arranging the power supply unit and the power reception unit, and the device side information transmission / reception unit and the medium side information transmission / reception unit facing each other. .

  Here, in the first invention of the present application, one of the medium side information transmission / reception unit or the apparatus side information transmission / reception unit is symmetrical with respect to a predetermined straight line on the medium side arrangement surface or the apparatus side arrangement surface. And the other information transmission / reception unit of the medium side information transmission / reception unit or the apparatus side information transmission / reception unit is one of the information transmission / reception units provided at both of the line symmetry positions. The information transmission / reception unit is provided at a position where at least a part of the information transmission / reception unit faces during communication. As a result, the power supply unit and the power reception unit are provided at the intermediate position between the information transmission / reception units provided at the two locations (both of the line-symmetric positions) and the corresponding position, so that the medium-side arrangement surface of the wireless communication medium during communication Even when the wireless communication medium is opposite to the front and back so as to correspond to the symmetrical positional relationship of one of the information transmission / reception units provided at the two locations, In addition, at least one of the power feeding unit, the power receiving unit, and the one information transmitting / receiving unit provided at the two locations can be opposed to the other information transmitting / receiving unit.

  Further, in the first invention of the present application, one of the power feeding unit and the power receiving unit is provided at both of a pair of line symmetric positions that are line symmetric with respect to a predetermined straight line on the medium side arrangement surface or the device side arrangement surface, The other of the power feeding unit or the power receiving unit is provided at a position where at least a part of the power feeding unit or the power receiving unit is opposed to either the power feeding unit or the power receiving unit provided at both of the line symmetry positions. Thereby, by providing the medium side information transmission / reception unit and the device side information transmission / reception unit at one intermediate position and the corresponding position of the power supply unit or the power reception unit provided at the above two locations (both of the line symmetrical positions), When the medium-side arrangement surface of the wireless communication medium and the device-side arrangement surface of the wireless communication apparatus are arranged to face each other during communication, the wireless communication medium corresponds to the symmetrical positional relationship between the power supply unit or the power reception unit provided at the two locations. Even if the front and back are reversed, at least one of the medium-side information transmission / reception unit and the device-side information transmission / reception unit, and the power supply unit or power reception unit provided in the two locations, and the other of the power supply unit or power reception unit Can be made to face each other.

  As described above, according to the first invention of the present application, even when the wireless communication medium is turned upside down in a predetermined direction during communication, the power feeding unit, the power receiving unit, and the information transmitting / receiving unit can be opposed to each other. Power supply to the communication medium and transmission / reception of information can be performed. As a result, the degree of freedom of the arrangement of the wireless communication medium and the wireless communication device that can supply power to and transmit / receive information to / from the wireless communication medium can be increased, and a wireless communication medium (such as an IC card) is used. User convenience can be improved. On the other hand, for example, the configuration of detecting the front and back of the wireless communication medium and switching the transmission / reception circuit is unnecessary, and the circuit configuration can be simplified. Therefore, user convenience can be improved with a simple circuit configuration.

In addition, the apparatus-side information transmission / reception unit is provided at both of a pair of line-symmetric positions that are line-symmetric with respect to the first straight line, and the medium-side information transmission / reception unit is communicated with any one of the apparatus-side information transmission / reception units. Provided at the opposite position. As a result, even if the wireless communication medium is rotated around an axis parallel to the first straight line during communication and opposite to the front and back, the apparatus side information transmission / reception provided at both the line symmetric positions that are line symmetric with respect to the first straight line. Information can be transmitted / received between the wireless communication apparatus and the wireless communication medium with any one of the units facing the medium side information transmitting / receiving unit.

In addition, the power supply unit is provided at an intermediate position between the apparatus-side information transmission / reception units, and the power reception unit is provided at a position facing the power supply unit during communication. As a result, even when the wireless communication medium is rotated around an axis parallel to the first straight line during communication and the front and back sides are reversed, the positional relationship between the power supply unit of the wireless communication device and the power reception unit of the wireless communication medium remains unchanged. Can be supplied to the wireless communication medium from the wireless communication device.

  The apparatus-side information transmission / reception unit is provided at both of a pair of line-symmetric positions that are line-symmetric with respect to the first straight line that substantially bisects the apparatus-side facing part, and the medium-side information transmission / reception unit is provided at the line-symmetric position When the information transmission / reception unit is provided at any one of the opposing positions, for example, the wireless communication medium is rotated around an axis parallel to the first straight line and the other straight line (second straight line) that is perpendicular to the first straight line. If the medium-side information transmitting / receiving unit is not positioned on the rotation axis when the front and back sides are reversed, the position of the medium-side information transmitting / receiving unit moves along a direction substantially parallel to the first straight line by the front / back rotating operation. To do.

At this time, in the first invention of the present application, the apparatus-side information transmitting / receiving unit is arranged at both of the pair of line-symmetrical positions that are line-symmetric with respect to the first straight line, and the apparatus-side information transmitting / receiving unit is arranged in the first line. Each linear length is provided so as to be longer than a length that is substantially perpendicular to the first straight line. As a result, the apparatus-side information transmission / reception unit can be disposed so as to include the movement range of the medium-side information transmission / reception unit accompanying the front-back rotation operation around the axis parallel to the second straight line of the wireless communication medium. Become.

Therefore, according to the first invention of the present application, not only when the wireless communication medium is rotated around the axis parallel to the first straight line and turned upside down, but also rotated around the axis parallel to the second straight line. Even if the opposite is true, the wireless communication device and the wireless communication device are wirelessly set such that one of the two device-side information transmission / reception units (both line-symmetric positions) provided in the first linear direction is opposed to the medium-side information transmission / reception unit. Information can be transmitted to and received from the communication medium. As a result, the degree of freedom of the opposing arrangement mode can be further increased, and the convenience of the user who uses a wireless communication medium (for example, an IC card) can be further improved.

According to a second invention, in the first invention , the device-side information transmission / reception unit is provided at both of a pair of line-symmetric positions that are line-symmetric with respect to a second line that is substantially perpendicular to the first line, The second linear direction length is provided so as to be longer than the first linear direction length.

In the second invention of the present application, the apparatus-side information transmitting / receiving unit is provided at both of a pair of line-symmetrical positions that are line-symmetric with respect to the first line, and with respect to the second line that is perpendicular to the first line. Further, the apparatus side information transmitting / receiving units provided at both of the pair of line symmetrical positions that are line symmetric are arranged so that the first linear direction length thereof is longer than the second linear direction length thereof. (Or such that the second linear length is longer than the first linear length). Thus, the apparatus-side information transmitting / receiving unit formed along the first linear direction and the apparatus-side information transmitting / receiving unit formed along the second linear direction are provided so that both end portions thereof are overlapped with each other. It is possible to provide an apparatus-side information transmitting / receiving unit so as to surround the four sides. Thereby, not only when the wireless communication medium is rotated around the axis parallel to the first straight line and the second straight line so as to be opposite to each other, but also when the wireless communication medium is rotated on the medium side arrangement surface. In addition, the movement range of the medium-side information transmitting / receiving unit accompanying the rotation operation can be included, and any one of the device-side information transmitting / receiving units provided at the four locations and the medium-side information transmitting / receiving unit are opposed to each other. Information can be transmitted and received between the communication device and the wireless communication medium. As a result, the degree of freedom of the facing arrangement mode can be further increased, and the convenience of the user using the wireless communication medium (for example, an IC card) can be further improved.
In order to achieve the above object, the third invention provides a wireless communication medium including a power receiving unit to which power is supplied and a medium side arrangement surface for arranging a medium side information transmitting / receiving unit for transmitting and receiving information, The medium comprising: a power feeding unit that supplies power to the power receiving unit; and a medium side information transmitting / receiving unit and a device side information transmitting / receiving unit configured to arrange a device side information transmitting / receiving unit configured to transmit / receive information. A wireless communication system that performs communication between the wireless communication medium and a wireless communication device with a side placement surface and the device side placement surface facing each other, wherein the power feeding unit is connected to the wireless on the device side placement surface. Provided at both of a pair of line symmetry positions that are line symmetrical with respect to the first straight line that bisects the facing portion that faces the communication medium, and the first linear direction length is the first straight line To be longer than the length of the direction that is substantially perpendicular Provided respectively, the power receiving unit is provided at a position opposite to any of the power feeding units provided at both of the line symmetric positions at the time of communication, and the device side information transmitting / receiving unit is provided at both of the line symmetric positions. The medium side information transmission / reception unit is provided at a position facing the device side information transmission / reception unit during communication.
The power feeding unit is provided at both of a pair of line-symmetric positions that are line-symmetric with respect to the first straight line that substantially bisects the device-side facing unit, and any one of the power feeding units provided with the power receiving unit at the line-symmetrical position. For example, when the wireless communication medium is rotated about an axis parallel to the other straight line (second straight line) that is perpendicular to the first straight line when facing communication with the first straight line, If it is not located on the rotation axis, the position of the power reception unit moves along a direction substantially parallel to the first straight line by the front and back rotation operation.
At this time, in the third invention of the present application, the power feeding portions are arranged at both of a pair of line symmetrical positions that are line symmetric with respect to the first straight line, and the lengths of the power feeding portions in the first linear direction are the same. Each is provided so as to be longer than the length in the direction substantially perpendicular to the first straight line. Thereby, it becomes possible to arrange | position the electric power feeding part so that the movement range of the electric power receiving part accompanying the front and back rotation operation | movement around the axis | shaft parallel to the 2nd straight line of the said wireless communication medium may be included.
Therefore, according to the third invention of the present application, not only when the wireless communication medium is rotated around the axis parallel to the first straight line and turned upside down, but also rotated around the axis parallel to the second straight line and turned upside down. Even if it is the opposite, between one of the two power supply units (both line-symmetric positions) provided long in the first linear direction and the power reception unit are opposed to each other between the wireless communication device and the wireless communication medium Information can be sent and received. As a result, the degree of freedom of the opposing arrangement mode can be further increased, and the convenience of the user who uses a wireless communication medium (for example, an IC card) can be further improved.
According to a fourth invention, in the third invention, the power feeding section is provided at both of a pair of line-symmetric positions that are line-symmetric with respect to a second straight line that is substantially perpendicular to the first straight line. Each of the two linear lengths is longer than the first linear length.
In the fourth invention of the present application, the power feeding portions are provided at both of a pair of line symmetrical positions that are line symmetric with respect to the first straight line, and are line symmetric with respect to the second straight line that is perpendicular to the first straight line. Further, the power supply portions provided at both of the pair of line symmetrical positions are arranged so that the first linear direction length is longer than the second linear direction length (or the second). In such a manner that the length in the linear direction is longer than the length in the first linear direction). As a result, the power feeding portion formed along the first linear direction and the power feeding portion formed along the second linear direction are provided so that both end portions thereof overlap each other and surround the four sides in the facing portion. A power feeding unit can be provided. Thereby, not only when the wireless communication medium is rotated around the axis parallel to the first straight line and the second straight line so as to be opposite to each other, but also when the wireless communication medium is rotated on the medium side arrangement surface. In addition, it is possible to include the range of movement of the power receiving unit associated with the rotation operation, and any one of the power feeding units provided at the four locations is opposed to the power receiving unit, so that the wireless communication device and the wireless communication medium are You can send and receive information. As a result, the degree of freedom of the facing arrangement mode can be further increased, and the convenience of the user using the wireless communication medium (for example, an IC card) can be further improved.
In order to achieve the above object, the fifth invention provides a wireless communication medium including a power receiving unit to which power is supplied and a medium side arrangement surface for arranging a medium side information transmitting / receiving unit for transmitting and receiving information, The medium comprising: a power feeding unit that supplies power to the power receiving unit; and a medium side information transmitting / receiving unit and a device side information transmitting / receiving unit configured to arrange a device side information transmitting / receiving unit configured to transmit / receive information. A wireless communication system that performs communication between the wireless communication medium and a wireless communication device with a side arrangement surface and the device side arrangement surface facing each other, wherein the medium side information transmission / reception unit is connected to the medium side arrangement surface. It is provided at both of a pair of line symmetry positions that are line symmetric with respect to the third straight line that is substantially bisected, and the length of the third straight line direction is greater than the length of the direction that is substantially perpendicular to the third straight line. Provided to be longer, the device side A medium in which a report transmission / reception unit is provided at a position opposite to any of the medium-side information transmission / reception units provided at both of the line-symmetrical positions, and the power reception unit is provided at both of the line-symmetrical positions. It is provided at an intermediate position between the side information transmission / reception units, and the power supply unit is provided at a position facing the power reception unit during communication.
The medium side where the medium side information transmission / reception unit is provided at both of a pair of line symmetry positions which are symmetrical with respect to the third straight line which bisects the medium side arrangement surface, and the apparatus side information transmission / reception unit is provided at the line symmetry position. When the information transmission / reception unit is provided at any one facing position, for example, the wireless communication medium is rotated around an axis parallel to the third straight line and the other straight line (fourth straight line) that is perpendicular to the third straight line. In the case where the front and back sides are opposite, if the medium side information transmitting / receiving unit is not positioned on the rotation axis, the position of the medium side information transmitting / receiving unit moves along the direction substantially parallel to the third straight line by the front / back rotating operation. To do.
At this time, in the fifth invention of the present application, the medium side information transmitting / receiving unit is arranged at both of the pair of line symmetrical positions which are line symmetric with respect to the third straight line, and the medium side information transmitting / receiving unit is arranged in the third line. Each linear length is provided so as to be longer than the direction length substantially perpendicular to the third straight line. As a result, even if the medium-side information transmitting / receiving unit rotates front and back around an axis parallel to the fourth straight line of the wireless communication medium, the apparatus-side information transmitting / receiving unit is included in the range of the medium-side information transmitting / receiving unit. It becomes possible to arrange | position to.
Therefore, according to the fifth aspect of the present invention, not only when the wireless communication medium is rotated around the axis parallel to the third straight line and turned upside down, but also rotated around the axis parallel to the fourth straight line and turned upside down. Even if the opposite is true, the wireless communication device and the wireless communication device are wirelessly arranged such that any one of the two medium side information transmission / reception units (both line symmetrical positions) provided in the third linear direction is opposed to the device side information transmission / reception unit. Information can be transmitted to and received from the communication medium. As a result, the degree of freedom of the opposing arrangement mode can be further increased, and the convenience of the user who uses a wireless communication medium (for example, an IC card) can be further improved.
In a sixth aspect based on the fifth aspect, the medium-side information transmitter / receiver is provided at both of a pair of line-symmetric positions that are line-symmetric with respect to a fourth line that is substantially perpendicular to the third line, The fourth linear direction length is provided so as to be longer than the third linear direction length.
In the sixth invention of the present application, the medium-side information transmitting / receiving unit is provided at both of the pair of line-symmetric positions that are line-symmetric with respect to the third line, and with respect to the fourth line that is perpendicular to the third line. Further, the medium side information transmitting / receiving unit provided at both of the pair of line symmetrical positions that are line symmetric, and the medium-side information transmitting / receiving unit provided at the four positions are longer in length than the fourth linear direction. (Or such that the fourth linear length is longer than the third linear length). Thus, the medium side information transmitting / receiving unit formed along the third linear direction and the medium side information transmitting / receiving unit formed along the fourth linear direction are provided so that both end portions thereof overlap each other, and the medium side It is possible to provide the medium side information transmitting / receiving unit so as to surround the four sides in the arrangement plane. Thereby, not only when the wireless communication medium is rotated around the axis parallel to the third straight line and the fourth straight line so as to be opposite to each other, but also when the wireless communication medium is rotated on the medium side arrangement surface. Can be arranged so that the device side information transmitting / receiving unit is included within the range of the rotating medium side information transmitting / receiving unit, and any one of the medium side information transmitting / receiving units provided at the four locations and the device side information. Information can be transmitted and received between the wireless communication device and the wireless communication medium by facing the transmission / reception unit. As a result, the degree of freedom of the facing arrangement mode can be further increased, and the convenience of the user using the wireless communication medium (for example, an IC card) can be further improved.
In order to achieve the above object, the seventh invention provides a wireless communication medium provided with a medium side arrangement surface for arranging a power receiving unit to which power is supplied and a medium side information transmitting / receiving unit for transmitting and receiving information, The medium comprising: a power feeding unit that supplies power to the power receiving unit; and a medium side information transmitting / receiving unit and a device side information transmitting / receiving unit configured to arrange a device side information transmitting / receiving unit configured to transmit / receive information. A wireless communication system that performs communication between the wireless communication medium and a wireless communication device with a side arrangement surface and the device side arrangement surface facing each other, wherein the power receiving unit is substantially divided into the medium side arrangement surface It is provided at both of a pair of line symmetrical positions that are line symmetric with respect to the third straight line, and the third linear direction length is longer than the direction length that is substantially perpendicular to the third straight line. Provided with the power feeding section Provided at a position facing at the time of communication with any of the power receiving units provided at both of the nominal positions, the medium side information transmitting / receiving unit is provided at an intermediate position between the power receiving units provided at both of the line symmetrical positions, The apparatus-side information transmission / reception unit is provided at a position facing the medium-side information transmission / reception unit during communication.
The power reception unit is provided at both of a pair of line symmetry positions that are line symmetric with respect to the third straight line that substantially bisects the medium side arrangement surface, and any one of the power reception units provided with the power supply unit at the line symmetry position. For example, when the wireless communication medium is rotated around an axis parallel to the other straight line (fourth straight line) that is perpendicular to the third straight line when facing communication with the third straight line, If it is not located on the rotation axis, the position of the power reception unit moves along a direction substantially parallel to the third straight line by the front and back rotation operation.
At this time, in the seventh invention of the present application, the power receiving units are arranged at both of the pair of line symmetrical positions that are line symmetric with respect to the third straight line, and the power receiving units have the third linear direction length thereof. Each is provided so as to be longer than the length in the direction substantially perpendicular to the third straight line. As a result, even if the power receiving unit rotates front and back about an axis parallel to the fourth straight line of the wireless communication medium, the power receiving unit can be disposed so as to be included in the range of the power receiving unit. .
Therefore, according to the seventh invention of the present application, not only when the wireless communication medium is rotated around the axis parallel to the third straight line and turned upside down, but also rotated around the axis parallel to the fourth straight line and turned upside down. Even if it is the opposite, between one of the two power receiving units (both line-symmetric positions) provided in the third linear direction and the power feeding unit facing each other, the wireless communication device and the wireless communication medium Information can be sent and received. As a result, the degree of freedom of the opposing arrangement mode can be further increased, and the convenience of the user who uses a wireless communication medium (for example, an IC card) can be further improved.
According to an eighth invention, in the seventh invention, the power reception unit is provided at both of a pair of line-symmetric positions that are line-symmetric with respect to a fourth line that is substantially perpendicular to the third line, and 4 is provided such that each of the four linear lengths is longer than the third linear length.
In the eighth invention of the present application, the power receiving unit is provided at both of a pair of line symmetrical positions that are line symmetric with respect to the third straight line, and is line symmetric with respect to the fourth straight line perpendicular to the third straight line. Further, the power receiving units provided at both of the pair of line symmetrical positions and the four places are arranged so that the third linear direction length is longer than the fourth linear direction length (or the fourth). Each of which is longer than the third linear length). Accordingly, the power receiving unit formed along the third linear direction and the power receiving unit formed along the fourth linear direction are provided so that both end portions thereof overlap each other, and the four sides are arranged in the medium side arrangement surface. A power receiving unit can be provided so as to surround the power receiving unit. Thereby, not only when the wireless communication medium is rotated around the axis parallel to the third straight line and the fourth straight line so as to be opposite to each other, but also when the wireless communication medium is rotated on the medium side arrangement surface. Can be arranged so that the power feeding unit is included in the range of the rotating power receiving unit, and any one of the four power receiving units provided at the four locations is opposed to the power feeding unit, Information can be transmitted to and received from the wireless communication medium. As a result, the degree of freedom of the facing arrangement mode can be further increased, and the convenience of the user using the wireless communication medium (for example, an IC card) can be further improved.

A ninth invention is characterized in that, in any one of the first to eighth inventions , a guide means for guiding the facing position of the wireless communication medium at the time of communication is provided in the facing portion of the device side arrangement surface. .

  During communication, the wireless communication medium is made to face using the guide means provided in the facing part, so that the power feeding part and the power receiving part, and the apparatus side information sending / receiving part and the medium side information sending / receiving part can be made to face each other reliably. .

According to a tenth aspect of the present invention, in any one of the first to ninth aspects, the medium-side arrangement surface direction dimension of the power receiving unit is configured to be larger than the apparatus-side arrangement surface direction dimension of the power feeding unit.

  Thus, even when the facing position between the wireless communication medium and the wireless communication device is slightly shifted during communication, the power feeding unit and the power receiving unit are configured so that the facing surface of the power feeding unit in the wireless communication medium does not protrude from the range of the power receiving unit. Can be made to face each other. As a result, power can be reliably supplied from the wireless communication device side to the wireless communication medium without omission.

In an eleventh aspect according to any one of the first to tenth aspects, when the device-side information transmitting / receiving unit is in a transmission state, the medium-side information transmitting / receiving unit is switched to a receiving state, and the device-side information transmitting / receiving unit is in a receiving state. In this case, there is provided a cooperation control means for controlling the medium side information transmission / reception unit and the apparatus side information transmission / reception unit in cooperation so that the medium side information transmission / reception unit switches to a transmission state.

In the eleventh invention of the present application, when the device side information transmitting / receiving unit is in a transmission state by the cooperation control means, the medium side information transmitting / receiving unit is switched to the receiving state, and when the device side information transmitting / receiving unit is in the receiving state, the medium side information transmitting / receiving unit transmits Switch to state. In this way, by adopting a half-duplex communication method in which reception and transmission are performed one way at a time, it is possible to transmit and receive information only by providing a single information transmission / reception unit on each of the wireless communication device side and the wireless communication medium side. It can be carried out.

In a twelfth aspect based on any one of the first to eleventh aspects, the wireless communication device includes first switching means for switching a transmission state and a reception state of the device-side information transmitting / receiving unit, and the wireless communication medium is And a second switching means for switching between a transmission state and a reception state of the medium side information transmission / reception unit.

In the twelfth invention of the present application, when information is transmitted from the wireless communication apparatus to the wireless communication medium, the first switching means switches the apparatus-side information transmitting / receiving section to the transmission state, and the second switching means is the medium-side information transmitting / receiving section. Switch to the reception state. On the other hand, when the wireless communication device receives information from the wireless communication medium, the first switching unit switches the device-side information transmission / reception unit to the reception state, and the second switching unit switches the medium-side information transmission / reception unit to the transmission state. . In this way, information can be transmitted and received between the device-side information transmitting / receiving unit of the wireless communication device and the medium-side information transmitting / receiving unit of the wireless communication medium.

In a thirteenth aspect based on any one of the first to twelfth aspects, the wireless communication medium performs display related to information transmitted / received between the device side information transmitting / receiving unit and the medium side information transmitting / receiving unit. It has a display means.

  Thereby, for example, when information is received from the wireless communication device via the device-side information transmission / reception unit and the medium-side information transmission / reception unit, the display unit can display related to the received information. In addition, by providing the display means on the wireless communication medium side in this way, for example, when a cholesteric liquid crystal capable of holding a display even when power supply is cut off is used as the display means, when communicating with the wireless communication device In addition to this, it is possible to confirm the contents of information transmitted and received during the previous communication.

In a fourteenth aspect based on the thirteenth aspect , the wireless communication device further includes power control means for controlling power supplied from the power source to the display means via the power feeding section and the power receiving section. To do.

  As a result, during communication, the power control means can increase the power supplied from the power source to the display means as necessary. As a result, sufficient power can be supplied to display on the display means having relatively large power, and the display by the display means can be reliably performed.

  According to the present invention, user convenience can be improved with a simple circuit configuration.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The present embodiment is an embodiment when the present invention is applied to a wireless communication system including an IC card as a wireless communication medium and a wireless communication apparatus that transmits and receives information to and from the IC card.

  FIG. 1 is a diagram schematically illustrating the overall structure of a wireless communication system 100 according to the present embodiment. In FIG. 1, a wireless communication system 100 includes an IC (integrated circuit) card 200 and a wireless communication apparatus 300 that supplies power to the IC card 200 (wireless communication medium) and transmits / receives information to / from the IC card 200. have.

  The IC card 200 has a front surface 201 (medium-side arrangement surface) and a back surface 202 (medium-side arrangement surface), and displays related to information transmitted to and received from the wireless communication apparatus 300 on the front surface 201. A liquid crystal display unit 203 (display means) for performing In this embodiment, a cholesteric liquid crystal that does not require display power is used for the liquid crystal display unit 203 so that display is possible even when power supply is cut off.

  The wireless communication device 300 has an inclined surface 301 (device-side arrangement surface) for facing the IC card 200 during communication. The facing surface 301 is formed with a recess 302 (guide means) for guiding the facing position of the IC card 200, and a facing surface 303 (facing portion) is provided on the bottom surface of the recess 302. The recess 302 is formed in substantially the same shape as the IC card 200. Usually, during communication, the IC card 200 is fitted into the recess 302 so that the back surface 202 of the IC card 200 faces the wireless communication device 300, and the back surface 202 of the IC card 200 and the facing surface 303 of the wireless communication device 300 are opposed to each other. Thus, power is supplied from the wireless communication apparatus 300 to the IC card 200 and information is transmitted and received.

  FIG. 2 is a diagram illustrating the arrangement configuration of the power feeding coil and the data coil provided in the facing surface 303 of the wireless communication apparatus 300 and the arrangement configuration of the power receiving coil and the data coil provided in the IC card 200.

  In FIG. 2, a power supply coil 304 (power supply unit) for supplying power to the IC card 200 is provided at a substantially central portion of the facing surface 303 of the wireless communication apparatus 300. Data coils 305A and 305B (device-side information transmission / reception units) for transmitting and receiving information are on the facing surface 303, and a straight line L1 (the first line L1) that bisects the facing surface 303 in the longitudinal direction (vertical direction in FIG. 2). (One straight line) is provided at both of a pair of line-symmetric positions that are line-symmetric. As for the short direction, the data coils 305A and 305B and the power feeding coil 304 are respectively disposed at substantially central portions of the facing surface 303 in the short direction (left and right direction in FIG. 2).

  On the other hand, a power receiving coil 204 (power receiving unit) that is magnetically coupled to the power feeding coil 304 and receives power supplied from the wireless communication device 300 is provided at a substantially central portion of the IC card 200. A data coil 205 (medium-side information transmitting / receiving unit) that is magnetically coupled to the data coil 305A (or the data coil 305B) and transmits / receives information to / from the wireless communication apparatus 300 is used for data stored in the wireless communication apparatus 300. It is provided at a position corresponding to the coil 305A or 305B (in this embodiment, the data coil 305A) (that is, a position facing the data coil 305A or 305B during communication). Note that a coil that is slightly larger than the power supply coil 304 provided in the wireless communication apparatus 300 is used for the power receiving coil 204.

  With the above configuration, when the IC card 200 is fitted into the recess 302 of the wireless communication device 300, the power feeding coil 304 of the wireless communication device 300 and the power receiving coil 201 of the IC card 200 are magnetically coupled. In addition, the data coil 305A or 305B of the wireless communication apparatus 300 and the data coil 205 of the IC card 200 are magnetically coupled.

  FIG. 3 is a functional block diagram showing details of functional configurations of the IC card 200 and the wireless communication device 300.

  In FIG. 3, the wireless communication apparatus 300 generates a carrier wave for accessing (reading / writing) the IC card 200 via the data coil 305A and the data coil 205, and from a scanner control unit 309 described later. A transmission circuit 306A that modulates the carrier wave based on an input control signal, and a response signal received from the IC card 200 via the data coil 205 and the data coil 305A are demodulated, and the scanner control unit 309, which will be described later, receives the signal. A receiving circuit 307A for outputting, and a power switch 308A (first switching means) for switching a power supply destination of a power source 310 to be described later to the transmitting circuit 306A or the receiving circuit 307A. Similarly, a carrier wave for accessing the IC card 200 via the data coil 305B and the data coil 205 is generated, and the carrier wave is modulated based on a control signal input from a scanner control unit 309 described later. Power supply of a circuit 306B, a receiving circuit 307B that demodulates a response signal received from the IC card 200 via the data coil 205 and the data coil 305B, and outputs the demodulated signal to a scanner control unit 309 described later, and a power supply 310 described later A power switch 308B (first switching means) for switching the destination to the transmission circuit 306B or the reception circuit 307B. That is, the wireless communication apparatus 300 has a pair of circuit configurations for information transmission / reception including a data coil 305, a transmission circuit 306, a reception circuit 307, and a power switch 308.

  In addition, the wireless communication apparatus 300 performs modulation control of carrier waves in the transmission circuits 306A and 306B and processing of signals demodulated by the reception circuits 307A and 307B, and scanner control for controlling switching destinations of the power switches 308A and 308B. Unit 309 and the power supply coil 304 and the power receiving coil 201 to supply power to the IC card 200 and the scanner control unit 309 and the power switches 308A and 308B to transmit circuits 306A and 306B or receive circuits 307A and 307B. And a power source 310 for supplying power to the power source.

  On the other hand, the IC card 200 generates a carrier wave to be sent back to the wireless communication apparatus 300 via the data coils 205 and 305A, and modulates the carrier wave based on a control signal input from a card control unit 210 described later. A transmission circuit 206, a reception circuit 207 that demodulates a signal from the wireless communication apparatus 300 received via the data coils 305A and 205 and outputs the demodulated signal to a card control unit 210 described later, and a power supply 310 of the wireless communication apparatus 300 And a power switch 208 (second switching means) for switching the supply destination of the power supplied from the power supply coil 304 and the power reception coil 201 to the transmission circuit 206 or the reception circuit 207.

  The IC card 200 includes a display control circuit 209 that performs display control of the liquid crystal display unit 203 based on a control signal from a card control unit 210 (to be described later), a carrier wave modulation control in the transmission circuit 206, and a reception circuit 207. A card control unit 210 that processes the demodulated signal, controls the switching destination of the power switch 208, and controls the display of the liquid crystal display unit 203 via the display control circuit 209; and the wireless communication device And a rectifier circuit 211 that rectifies supplied power supplied from the power source 310 of the 300 through the power supply coil 304 and the power reception coil 201.

  The scanner control unit 309 and the card control unit 210 include a CPU (Central Processing Unit), a memory including a RAM and a ROM, a timer, and the like, although not particularly illustrated.

  Between the wireless communication apparatus 300 and the IC card 200 configured as described above, power supply and information transmission / reception from the wireless communication apparatus 300 to the IC card 200 performed during communication are performed by the scanner control of the wireless communication apparatus 300. This is performed under the control of the unit 309 and the card control unit 210 of the IC card 200. Hereinafter, the control procedure performed by the scanner control unit 309 and the card control unit 210 will be described in detail.

  FIG. 4 is a flowchart showing a control procedure performed by the scanner control unit 309 of the wireless communication apparatus 300 during communication.

  First, in step S <b> 100, card presence detection for detecting whether or not the IC card 200 is placed in the recess 302 of the wireless communication apparatus 300 (in other words, whether or not the IC card 200 is at the facing position of the facing surface 303 of the wireless communication apparatus 300). Processing is performed (refer to FIG. 5 described later for details).

  In the next step S300, information is transmitted to the IC card 200, and a data writing process for writing information to the card control unit 210 is performed (refer to FIG. 6 described later for details).

  In the next step S500, a card for detecting whether or not the IC card 200 has been removed from the recess 302 of the wireless communication device 300 (in other words, whether or not the IC card 200 has been removed from the facing position of the facing surface 303 of the wireless communication device 300). Presence / absence detection processing is performed (refer to FIG. 7 for details).

  FIG. 5 is a flowchart showing a detailed procedure of the card presence detection process in step S100.

  First, in step S110, a control signal is output to the power switch 308A and switched to the transmission circuit 306A side. As a result, the power of the power supply 310 is supplied to the transmission circuit 306A and the power supply to the reception circuit 307A is cut off, the power supply of the transmission circuit 306A is turned on, and the power supply of the reception circuit 307A is turned off.

  In the next step S120, the process waits for 5 milliseconds. The 5 ms count is performed by a timer (not shown) included in the scanner control unit 309.

  In the next step S130, a control signal is output to the transmission circuit 306A, and a carrier wave subjected to predetermined modulation as an ID request signal is transmitted to the IC card 200 via the data coil 305A and the data coil 205. This ID request signal is a signal for requesting the IC card 200 to return the card ID stored in the card control unit 210 (memory thereof). The card ID is transmitted to the wireless communication apparatus 300 under control.

  In the next step S140, the process waits for 5 milliseconds as in step S120.

  In the next step S150, a control signal is output to the power switch 308A and switched to the receiving circuit 307A side. As a result, the power of the power supply 310 is supplied to the reception circuit 307A and the power supply to the transmission circuit 306A is cut off, the power supply of the reception circuit 307A is turned on and the power supply of the transmission circuit 306A is turned off (the state shown in FIG. 3). ).

  In the next step S160, counting of the time (response waiting time) after the power of the receiving circuit 307A is turned on in step S150 is started. This counting is performed by a timer (not shown) included in the scanner control unit 309.

  In the next step S170, it is determined whether or not the response signal to the ID request signal transmitted from the IC card 200 in the previous step S130, that is, the card ID has not been received. If not received, the determination is satisfied and the routine goes to the next Step S180.

  In step S180, it is determined whether the response waiting time started in step S160 has reached 100 ms or more. If it is 100 milliseconds or more, the determination is satisfied and the process returns to step S110. On the other hand, if it is less than 100 milliseconds, the determination is not satisfied and the routine returns to step S170.

  If the card ID is received from the IC card 200 in the previous step S170, the determination is not satisfied and the process moves to step S190, waits for 5 milliseconds, and ends this flow.

  In the card presence detection process described above, unless a card ID is received from the IC card 200 (in other words, unless the IC card 200 is placed in the recess 302 of the wireless communication device 300), the “transmission state” is set in steps S110 to S180. "→ Transmit ID request signal after 5 msec. → Switch to reception state after 5 msec. → Wait for 100 msec response. → Switch to transmission state".

  FIG. 6 is a flowchart showing a detailed procedure of the data writing process in step S300 of FIG.

  First, in step S310, a transmission counter that counts the number of times display data is transmitted to the IC card 200 is reset to zero.

  In the next step S320, a control signal is output to the power switch 308A and switched to the transmission circuit 306A side. As a result, the power of the power supply 310 is supplied to the transmission circuit 306A and the power supply to the reception circuit 307A is cut off, the power supply of the transmission circuit 306A is turned on, and the power supply of the reception circuit 307A is turned off.

  In the next step S330, the process waits for 5 milliseconds. The 5 ms count is performed by a timer (not shown) included in the scanner control unit 309.

  In the next step S340, a control signal is output to the transmission circuit 306A, and a carrier wave subjected to predetermined modulation as display data is transmitted to the IC card 200 via the data coil 305A and the data coil 205.

  In the next step S350, 1 is added to the transmission counter indicating the number of times display data is transmitted.

  In the next step S360, the process waits for 5 milliseconds as in step S330.

  In the next step S370, a control signal is output to the power switch 308A and switched to the receiving circuit 307A side. As a result, the power of the power supply 310 is supplied to the reception circuit 307A and the power supply to the transmission circuit 306A is cut off, the power supply of the reception circuit 307A is turned on and the power supply of the transmission circuit 306A is turned off (the state shown in FIG. 3). ).

  In the next step S380, counting of the time (response waiting time) since the power of the receiving circuit 307A is turned on in step S370 is started. This counting is performed by a timer (not shown) included in the scanner control unit 309.

  In the next step S390, it is determined whether or not the response signal to the data write performed in the previous step S340 from the IC card 200, that is, the write completion response signal has not been received. If not received, the determination is satisfied, and the routine goes to the next Step S400. On the other hand, if the write completion response signal has been received, the determination is not satisfied and the routine goes to Step S410 and waits for 5 msec to end this flow.

  In step S400, it is determined whether the response waiting time started in step S380 has reached 100 ms or more. If it is less than 100 milliseconds, the determination is not satisfied and the routine returns to step S390. On the other hand, if it is 100 milliseconds or more, the determination is satisfied, and the routine goes to the next Step S420.

  In step S420, it is determined whether or not the transmission counter indicating the number of display data transmissions is 5 or more. If it is less than 5, the determination is not satisfied and the routine returns to step S320. On the other hand, if it is 5 or more, the determination is satisfied and this flow ends.

  As described above, in the data writing process, in step S320 to step S420, “display data transmission after 5 msec from the transmission state → switch to the reception state after 5 msec → wait for 100 msec response → switch to transmission state → display The procedure of “send data” is repeated five times. Here, the transmission of the display data is repeated five times. However, the number is not limited to this number, and may be further reduced or increased. Further, instead of setting the number of data transmissions, the data writing process may be terminated when an appropriate signal is received from the IC card 200 side.

  FIG. 7 is a flowchart showing a detailed procedure of the card non-detection process in step S500 of FIG.

  First, in step S510, a control signal is output to the power switch 308A and switched to the transmission circuit 306A side. As a result, the power of the power supply 310 is supplied to the transmission circuit 306A and the power supply to the reception circuit 307A is cut off, the power supply of the transmission circuit 306A is turned on, and the power supply of the reception circuit 307A is turned off.

  In the next step S520, the process waits for 5 milliseconds. The 5 ms count is performed by a timer (not shown) included in the scanner control unit 309.

  In the next step S530, a control signal is output to the transmission circuit 306A, and an ID request signal is transmitted to the IC card 200 via the data coils 305A and 205.

  In the next step S540, the process waits for 5 milliseconds as in step S520.

  In the next step S550, a control signal is output to the power switch 308A and switched to the receiving circuit 307A side. As a result, the power of the power supply 310 is supplied to the reception circuit 307A and the power supply to the transmission circuit 306A is cut off, the power supply of the reception circuit 307A is turned on and the power supply of the transmission circuit 306A is turned off (the state shown in FIG. 3). ).

  In the next step S560, counting of the time (response waiting time) after the power supply of the receiving circuit 307A is turned on in step S550 is started. This counting is performed by a timer (not shown) included in the scanner control unit 309.

  In the next step S570, it is determined whether or not the response signal to the ID request signal transmitted from the IC card 200 in the previous step S130, that is, the card ID has not been received. If it has been received, the determination is not satisfied and the process moves to the next step S580, and after waiting for 100 milliseconds, the process returns to step S510. On the other hand, if not received, the determination is satisfied, and the routine goes to the next Step S590.

  In step S590, it is determined whether the response waiting time started in step S560 has reached 100 ms or more. If it is 100 milliseconds or more, the determination is satisfied, and the routine goes to the next Step S600. On the other hand, if it is less than 100 milliseconds, the determination is not satisfied and the process returns to step S570.

  In step S600, the process ends after waiting for 5 milliseconds.

  In the card non-detection process described above, as long as the card ID of the IC card 200 is received (in other words, unless the IC card 200 is removed from the concave portion 302 of the wireless communication device 300), the “transmission state” in steps S510 to S580. "→ Transmit ID request signal after 5 msec. → Switch to reception state after 5 msec. → Wait for 100 msec response. → Switch to transmission state".

  Next, the control procedure performed by the card control unit 210 will be described in detail.

  FIG. 8 is a flowchart showing a control procedure performed by the card control unit 210 of the IC card 200 during communication.

  First, in step S700, command reception processing for receiving a signal transmitted from the wireless communication apparatus 300 via the data coil 305A and the data coil 205 is performed (refer to FIG. 9 described later for details).

In the next step S770, data coil 305A is transmitted from wireless communication apparatus 300.
, 205 is an ID request signal (see step S130 in FIG. 5). If it is an ID request signal, the determination is satisfied, and the routine goes to the next Step S800.

  In step S800, an ID response transmission process for transmitting a card ID to the wireless communication apparatus 300 via the data coils 205 and 305A is performed (refer to FIG. 10 described later for details). Thereafter, the process returns to step S700.

  If the received signal is not an ID request signal in the previous step S770, the determination is not satisfied and the process proceeds to step S780 to determine whether the display data (see step S340 in FIG. 6). If it is display data, the determination is satisfied, and the routine goes to the next Step S900.

  In step S900, the display data transmitted from the wireless communication apparatus 300 via the data coils 305A and 205 is written into the memory, and writing / display processing for displaying on the liquid crystal display unit 203 is performed (details will be described later with reference to FIG. 11). reference).

  FIG. 9 is a flowchart showing a detailed procedure of the command reception process in step S700.

  In the next step S710, a control signal is output to the power switch 208 and switched to the receiving circuit 207 side. As a result, the power supplied from the power supply 310 of the wireless communication apparatus 300 via the power supply coil 304 and the power reception coil 201 is supplied to the reception circuit 207 and the power supply to the transmission circuit 206 is cut off, and the power supply of the reception circuit 207 Becomes ON and the power supply of the transmission circuit 206 is turned OFF.

  In the next step S720, the process waits for 5 milliseconds. The counting of 5 milliseconds is performed by a timer (not shown) included in the card control unit 210.

In the next step S730, data coil 305A is transmitted from wireless communication apparatus 300.
, 205 to determine whether a signal has been received. If it has been received, the determination is satisfied and this flow ends. On the other hand, if it has not been received, the determination is not satisfied and the routine returns to step S710.

  FIG. 10 is a flowchart showing the detailed procedure of the ID response transmission process in step S800 of FIG.

  In step S810, the process waits for 5 milliseconds.

  In the next step S820, a control signal is output to the power switch 208 and switched to the transmission circuit 206 side. As a result, the power supplied from the power supply 310 of the wireless communication apparatus 300 via the power feeding coil 304 and the power receiving coil 201 is supplied to the transmission circuit 206 and the power supply to the reception circuit 207 is interrupted, and the power supply of the transmission circuit 206 Is turned ON and the power supply of the receiving circuit 207 is turned OFF (state shown in FIG. 3).

  In the next step S830, the process waits for 5 milliseconds.

  In the next step S840, a control signal is output to the transmission circuit 206, and a carrier wave subjected to predetermined modulation as a response signal (ie, card ID) to the ID request signal is transmitted via the data coil 205 and the data coil 305A to the wireless communication device. Sent to 300.

  After waiting for 5 milliseconds in the next step S850, this flow is finished.

  FIG. 11 is a flowchart showing the detailed procedure of the writing / display processing in step S900 of FIG.

  First, in step S910, display data (see step S340 in FIG. 6) received from the wireless communication apparatus 300 via the data coil 305A and the data coil 205 is demodulated and captured by the reception circuit 207 and captured in a memory (not shown).

  In the next step S920, it is determined whether all display data has been received from the wireless communication apparatus 300 and stored in the memory. That is, in the present embodiment, display data is transmitted five times (see FIG. 6), and it is determined whether or not all five display data have been received and stored in the memory. If all the display data has not been received, the determination is not satisfied and the routine returns to step S910. On the other hand, if all the display data has been received, the determination is satisfied, and the routine goes to the next Step S930.

  In step S930, a control signal is output to the display control circuit 209, and information related to the display data stored in the memory is displayed on the liquid crystal display unit 203. As information displayed on the liquid crystal display unit 203, points are added according to the balance display when the IC card 200 is a cash card (or prepaid card), for example, or according to the purchase price of the product such as the IC card 200, for example. The point display etc. in the case of a point card are mentioned. Further, a power supply state (battery mark or the like) performed via the power supply coil 304 and the power reception coil 204 may be displayed.

  In the next step S940, the process waits for 5 milliseconds.

  In the next step S950, a control signal is output to the power switch 208 and switched to the transmission circuit 206 side. As a result, the power supplied from the power supply 310 of the wireless communication apparatus 300 via the power feeding coil 304 and the power receiving coil 201 is supplied to the transmission circuit 206 and the power supply to the reception circuit 207 is interrupted, and the power supply of the transmission circuit 206 Is turned ON and the power supply of the receiving circuit 207 is turned OFF (state shown in FIG. 3).

  In the next step S960, the process waits for 5 milliseconds.

  In the next step S970, a control signal is outputted to the transmission circuit 206, and a carrier wave subjected to predetermined modulation as a write completion response signal (see step S390 in FIG. 6) is wirelessly communicated via the data coil 205 and the data coil 305A. It transmits to the apparatus 300.

  In the next step S980, after waiting for 5 milliseconds, this flow is finished.

  FIG. 12 is a time chart showing, in time series, the exchange of signals performed during communication between the wireless communication apparatus 300 and the IC card 200 described with reference to FIGS. In FIG. 12, “transmission” is a state in which the power of the transmission circuit 306A (or the transmission circuit 306B) of the wireless communication apparatus 300 is ON or the power of the transmission circuit 206 of the IC card 200 is ON (hereinafter referred to as a transmission state). “Receiving” represents a state where the power of the receiving circuit 307A (or the receiving circuit 307B) of the wireless communication apparatus 300 is ON or the power of the receiving circuit 207 of the IC card 200 is ON (hereinafter referred to as a receiving state). ing.

  In FIG. 12, when the IC card 200 is not placed in the recess 302 of the wireless communication device 300, an ID request signal (ID request signal in FIG. 12) is sent from the wireless communication device 300 to the IC card 200 via the data coils 305A and 205. 1) is transmitted periodically. That is, in wireless communication apparatus 300, “switch to transmission state → transmit ID request signal after 5 msec → switch to reception state after 5 msec → wait for 100 msec response → switch to transmission state” is repeated (step S110 in FIG. 5). -Step S180).

  When the IC card 200 is placed in the recess 302 of the wireless communication device 300, the IC card 200 receives the ID request signal (indicated by ID request 2 in FIG. 12) periodically transmitted from the wireless communication device 300. As a result, the power of the transmission circuit 206 of the IC card 200 is turned on and switched to the transmission state after 5 milliseconds from the reception (step S820 in FIG. 10). As described above, in the wireless communication apparatus 300, the power of the receiving circuit 307A (or the receiving circuit 307B) is turned on and switched to the receiving state 5 milliseconds after the transmission of the ID request 2 (step S150 in FIG. 5). That is, when the wireless communication device 300 switches to the reception state, the IC card 200 switches to the transmission state almost simultaneously.

  An ID response signal (shown as ID response 3 in FIG. 12) is transmitted from the IC card 200 to the wireless communication device 300 via the data coils 205 and 305A after 5 ms from the switching of the IC card 200 to the transmission state ( Step S840 in FIG. By receiving this ID response 3, the wireless communication device 300 detects that the IC card 200 has been placed in the recess 302. Then, after receiving the ID response 3, the transmission state is switched 5 ms later (step S320 in FIG. 6). Since the IC card 200 switches to the reception state 5 ms after the ID response 3 is transmitted (step S710 in FIG. 9), the switching of the wireless communication device 300 to the transmission state and the switching to the reception state of the IC card 200 are almost the same. Done at the same time.

  Display data (indicated by display data 4 in FIG. 12) is transmitted from the wireless communication apparatus 300 to the IC card 200 via the data coils 305A and 205 after 5 ms after the wireless communication apparatus 300 switches to the transmission state ( Step S340 in FIG. In the present embodiment, the display data 4 is transmitted in five steps (step S420 in FIG. 6). As a result, the IC card 200 switches to the transmission state 5 ms after receiving all the display data (step S950 in FIG. 11). The wireless communication device 300 switches to the reception state 5 m seconds after the completion of transmission of the last display data 4 (step S370 in FIG. 6), so that the wireless communication device 300 is switched to the reception state and the IC card 200 is transmitted. Switching to is performed almost simultaneously.

  A write completion response signal (shown as a write completion response 5 in FIG. 12) is transmitted from the IC card 200 to the wireless communication device 300 via the data coils 205 and 305A 5 seconds after the IC card 200 is switched to the transmission state. (Step S970 in FIG. 11). As a result, the wireless communication device 300 switches to the transmission state 5 ms after receiving the write response completion signal 5 (step S510 in FIG. 7). Since the IC card 200 switches to the reception state 5 ms after the transmission of the write completion response 5 (step S710 in FIG. 9), the wireless communication device 300 is switched to the transmission state and the IC card 200 is switched to the reception state. Are performed almost simultaneously.

  An ID request signal (indicated by ID request 6 in FIG. 12) is transmitted from the wireless communication apparatus 300 to the IC card 200 via the data coils 305A and 205 after 5 milliseconds after the wireless communication apparatus 300 switches to the transmission state ( Step S530 in FIG. 7). As a result, the IC card 200 switches to the transmission state 5 ms after receiving the ID request 6 (step S820 in FIG. 10). The wireless communication device 300 switches to the reception state 5 ms after the transmission of the ID request 6 (step S550 in FIG. 7), so the wireless communication device 300 is switched to the reception state and the IC card 200 is switched to the transmission state. Switching takes place almost simultaneously.

  An ID response signal (indicated by ID response 7 in FIG. 12) is transmitted from the IC card 200 to the wireless communication device 300 via the data coils 205 and 305A after 5 ms from the switching to the transmission state of the IC card 200 ( Step S840 in FIG. By receiving this ID response 7, the wireless communication device 300 detects that the IC card 200 is still placed in the recess 302. Then, after waiting for 100 milliseconds after receiving the ID response 3, the state is switched to the transmission state (step S510 in FIG. 7). Furthermore, ID request 1 is transmitted to the IC card 200 5 m seconds after switching to the transmission state. Thereafter, “switch to reception state after 5 msec → wait for 100 msec response → switch to transmission state → send ID request signal after 5 msec → switch to reception state after 5 msec” is repeated (step S110 in FIG. 5). -Step S180). If the ID response 7 from the IC card 200 is not received during this time, the wireless communication device 300 detects that the IC card 200 is separated from the recess 302 of the wireless communication device 300.

  As described above, when the wireless communication device 300 is switched to the transmission state, the IC card 200 is switched to the reception state, and when the wireless communication device 300 is switched to the reception state, the IC card 200 is switched to the transmission state. As described above, the wireless communication system 100 according to the present embodiment employs a half-duplex communication method in which reception and transmission are performed one way at a time.

  In the above, the standby time from the trigger (signal reception, etc.) to the switching of the transmission / reception state is set to 5 msec or 100 msec. However, the present invention is not limited to this, and a different time may be set as appropriate.

  In the present embodiment configured as described above, at the time of communication between the wireless communication device 300 and the IC card 200, the power supply power from the wireless communication device 300 side is supplied from the power supply coil 304 via the power receiving coil 201 of the IC card 200. On the other hand, information is transmitted and received between the data coil 305 of the wireless communication apparatus 300 and the data coil 205 of the IC card 200. The power supply from the wireless communication apparatus 300 to the IC card 200 and the transmission / reception of information between the IC card 200 are performed by placing the IC card 200 in the recess 302 of the wireless communication apparatus 300, the power supply coil 304, the power reception coil 201, and the data coil 305. This is performed by arranging the data coil 205 to face each other.

  At this time, in the present embodiment, on the facing surface 303 of the wireless communication apparatus 300, the feeding coil 304 is disposed at a substantially central portion, and the data coils 305A and 305B are disposed on the facing surface 303 in the longitudinal direction (vertical direction in FIG. 2). Are provided at both of a pair of line symmetry positions that are line symmetric with respect to the straight line L1 that is substantially bisected. As a result, when the user places the IC card 200 in the recess 303 of the wireless communication device 300 during communication, the IC card 200 is moved from the normal state of FIG. The IC card 200 is rotated in the longitudinal direction or the rotation direction having a straight line parallel to the straight line L1 as a rotation axis) and placed opposite to the front and back as shown in (b) or from the normal state of (a). Even when the device is rotated in the horizontal direction (in other words, the short side of the IC card 200) and placed oppositely as shown in (c), the power supply coil 304 on the wireless communication device 300 side and the IC card 200 side The power receiving coil 204 and at least one of the data coils 305A and 305B provided at two locations on the wireless communication device 300 side are opposed to the data coil 205 on the IC card 200 side. It can be.

  As described above, according to the present embodiment, even when the IC card 200 is rotated in the vertical direction or the horizontal direction at the time of communication and turned upside down, the feeding coil 304 and the receiving coil 204, and the data coil 305 and the data coil 205 are connected. Power can be supplied from the wireless communication apparatus 300 to the IC card 200 and information can be transmitted and received. Thereby, the freedom degree of the opposing arrangement | positioning aspect of the IC card 200 and the radio | wireless communication apparatus 300 which can perform the electric power supply to the IC card 200, and transmission / reception of information can be increased, and the convenience of the user who uses the IC card 200 Can be improved. On the other hand, in the present embodiment, as described above, the IC card 200 is configured to be communicable even when the front and back sides are reversed. As a result, for example, the circuit configuration of detecting the front and back sides of the IC card 200 and switching the transmission / reception circuit becomes unnecessary. The circuit configuration can be simplified. Therefore, user convenience can be improved with a simple circuit configuration.

  In the present embodiment, in particular, the inclined surface 301 of the wireless communication apparatus 300 is provided with a recess 302 that guides the facing position of the IC card 200 during communication. Thereby, in the wireless communication device 300 and the IC card 200, the power feeding coil 304 and the power receiving coil 204 and the data coil 305 and the data coil 205 can be reliably opposed to each other during communication. Transmission and reception can be performed reliably. In addition, since the user can place the IC card 200 at an appropriate communication position without paying particular attention to the arrangement location, the convenience for the user can be further improved.

  In the present embodiment, particularly, when the wireless communication device 300 is switched to the transmission state, the IC card 200 is switched to the reception state, and when the wireless communication device 300 is switched to the reception state, the IC card 200 is switched to the transmission state. In this way, by adopting a half-duplex communication method in which reception and transmission are performed one way at a time, there is no need to provide transmission and reception coils on the wireless communication device 300 side and the IC card 200 side, respectively. Since the data coil can transmit and receive information, the circuit configuration can be further simplified.

  In this embodiment, in particular, a liquid crystal display unit 203 that performs display related to information transmitted to and received from the wireless communication device 300 is provided on the surface 201 of the IC card 200. Since the liquid crystal display unit 203 displays information related to information received from the wireless communication device 300 by the IC card 200 during communication, the user has communicated between the wireless communication device 300 and the IC card 200. Can be grasped. Furthermore, in this embodiment, a cholesteric liquid crystal that does not require display power is used for the liquid crystal display unit 203. As a result, since the display is possible even when the power supply is cut off, it is possible to check the contents of information transmitted and received during the previous communication other than during communication with the wireless communication device 300, further improving the convenience of the user. Can be improved.

  In the present embodiment, a coil that is slightly larger than the power supply coil 304 of the wireless communication apparatus 300 is used as the power reception coil 204 of the IC card 200. As a result, even when the IC card 200 is placed slightly shifted from the recess 302 of the wireless communication device 300 during communication, the position where the power supply coil 304 of the wireless communication device 300 faces is within the range of the power receiving coil 204 of the IC card 200. As described above, the power feeding coil 304 and the power receiving coil 204 can be opposed to each other. As a result, it is possible to reliably supply power from the wireless communication apparatus 300 side to the IC card 200 without omission.

  The present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit and technical idea of the present invention. Hereinafter, such modifications will be described in order.

(1) Variation of coil arrangement (i) Symmetric arrangement of power supply coil FIG. 14 shows the arrangement configuration of the power supply coil 304 and the data coil 305 provided in the facing surface 303A of the wireless communication apparatus 300 in this modification, and the IC card 200A. It is a figure showing the arrangement configuration of the receiving coil 204 and the data coil 205 which were provided in the inside.

  As shown in FIG. 14, in this modification, the data coil 305 for transmitting / receiving information to / from the IC card 200 </ b> A is provided at the substantially central portion of the facing surface 303 </ b> A of the wireless communication device 300. The power supply coils 304A and 304B for supplying power to the IC card 200 are symmetrical with respect to a straight line L1 that is on the facing surface 303A and substantially bisects the facing surface 303A in the longitudinal direction (vertical direction in FIG. 14). It is provided at both of the pair of line symmetrical positions. As for the short direction, the data coil 305 and the power supply coils 304A and 304B are respectively disposed at substantially central portions of the facing surface 303A in the short direction (left and right direction in FIG. 14).

  On the other hand, on the IC card 200A side, a data coil 205 that is magnetically coupled to the data coil 305 and transmits / receives information to / from the wireless communication device 300 is provided at a substantially central portion of the IC card 200A. The power receiving coil 204 that is magnetically coupled to the power feeding coil 304A or 304B and receives power supplied from the wireless communication device 300 is the power feeding coil 304A or 304B of the wireless communication device 300 (in this modification example). It is provided at a position corresponding to the feeding coil 304A).

  Even in this modification having the above configuration, even when the IC card 200A is rotated in the vertical direction or the horizontal direction at the time of communication and the front and back sides are reversed, the power supply coil 304 and the power reception coil 204, and the data coil 305 and the data coil 205 are opposed to each other. Power supply from the wireless communication apparatus 300 to the IC card 200A and transmission / reception of information can be performed.

(Ii) Symmetrical arrangement of data coils on the IC card side FIG. 15 shows an arrangement configuration of the power supply coil 304 and the data coil 305 provided in the facing surface 303B of the wireless communication apparatus 300 in this modification and the IC card 200B. It is a figure showing the arrangement configuration of received power coil 204 and data coils 205A, 205B.

  As shown in FIG. 15, in this modification, the power receiving coil 204 is provided at the center of the substantially surface of the IC card 200B, the data coils 205A and 205B are on the IC card 200B, and the IC card 200B is placed in the longitudinal direction ( It is provided at both of a pair of line-symmetric positions that are line-symmetric with respect to a straight line L3 (third line) that is substantially bisected in the vertical direction in FIG. As for the short direction, the data coils 205A and 205B and the power receiving coil 204 are respectively arranged at substantially the center of the short direction (left and right direction in FIG. 15) of the IC card 200B.

  On the other hand, on the wireless communication device 300 side, the power feeding coil 304 is provided at a substantially central portion of the facing surface 303B, and the data coil 305 is the data coil 205A or 205B of the IC card 200B (in this modification, the data coil 205A). Is provided at a position corresponding to.

  Even in the present modification having the above-described configuration, even when the IC card 200B is rotated in the vertical direction or the horizontal direction during communication and the front and back sides are reversed, the power supply coil 304 and the power reception coil 204, and the data coil 305 and the data coil 205 are opposed to each other. Power can be supplied from the wireless communication apparatus 300 to the IC card 200B and information can be transmitted and received.

(Iii) Symmetrical Arrangement of Power Receiving Coil FIG. 16 shows the arrangement of power feeding coil 304 and data coil 305 provided in facing surface 303C of radio communication apparatus 300 in this modification, and the power receiving coil provided in IC card 200C. It is a figure showing the arrangement configuration of 204A, 204B and the data coil 205.

  As shown in FIG. 15, in this modification, the data coil 205 is provided at the substantially central portion of the IC card 200C, and the power receiving coils 204A and 204B are on the IC card 200C. It is provided at both of a pair of line symmetry positions that are line symmetric with respect to a straight line L3 that is substantially bisected in the vertical direction in FIG. As for the short direction, the data coil 205 and the power receiving coils 204A and 204B are respectively disposed at substantially central portions in the short direction (left-right direction in FIG. 16) of the IC card 200C.

  On the other hand, on the wireless communication device 300 side, the data coil 305 is provided at the substantially central portion of the facing surface 303C, and the power supply coil 304 is the power supply coil 204A or 204B of the IC card 200C (data coil 204A in this modification). Is provided at a position corresponding to.

  Even in this modification having the above-described configuration, even when the IC card 200C is rotated in the vertical direction or the horizontal direction at the time of communication and turned upside down, the feeding coil 304 and the receiving coil 204, and the data coil 305 and the data coil 205 are opposed to each other. Power supply from the wireless communication apparatus 300 to the IC card 200C and transmission / reception of information can be performed.

(Iv) Arrangement of Data Coil Horizontally FIG. 17 shows the arrangement configuration of the power supply coil 304 and the data coils 305A ′ and 305B ′ provided in the facing surface 303D of the wireless communication apparatus 300 in this modification, and the IC card 200D. It is a figure showing the arrangement configuration of the receiving coil 204 and the data coil 205 which were provided.

  As shown in FIG. 17, in this modification, the power feeding coil 304 is provided at a substantially central portion of the facing surface 303D of the wireless communication device 300, and the data coils 305A ′ and 305B ′ are on the facing surface 303D. The opposing surface 303D is provided at both of a pair of line-symmetrical positions that are line-symmetric with respect to a straight line L1 that substantially bisects the longitudinal direction (vertical direction in FIG. 17). Further, in the present modification, as shown in the figure, the data coils 305A ′ and 305B ′ have a length in the direction of the straight line L1 (left and right direction in FIG. 17) that is substantially perpendicular to the straight line L1 (FIG. 17). (In the middle and up and down direction) each is provided to be longer than the length.

  On the other hand, on the IC card 200D side, the power receiving coil 204 is provided at a substantially central portion of the IC card 200D, and the data coil 205 is the data of the wireless communication device 300 in the card longitudinal direction (vertical direction in FIG. 17). It is a position corresponding to the coil 305A 'or 305B' (data coil 305A 'in this modification), and one side (right side in FIG. 17) in the short side direction of the card (left and right direction in FIG. 17). It is biased to

  When the card short direction arrangement of the data coil 205 on the IC card 200D side is biased to one side as in this modification, the IC card 200D is placed in the horizontal direction (parallel to a straight line L3 to be described later, which is substantially perpendicular to the straight line L1). When the front and back sides of the IC card 200D are rotated opposite to each other, the position of the data coil 205 of the IC card 200D moves along a direction substantially parallel to the straight line L1. Therefore, the coil arrangements of the above embodiment and the modifications (i) to (iii) cannot cope with the horizontal rotation of the IC card 200D. The same applies to the case of rotating in the vertical direction (rotating direction with a straight line parallel to the straight line L1 as an axis) to be opposite.

  On the other hand, in the present modification, as described above, the data coils 305A ′ and 305B ′ on the wireless communication device 300 side are provided so as to have a substantially elliptical shape, so that the IC card 200D can be rotated in the horizontal direction. It is possible to include the moving range of the opposing position of the accompanying data coil 205. The same applies to the front and back rotation in the vertical direction. Therefore, according to the present modification, even when the IC card 200D is rotated in the vertical direction or the horizontal direction during communication and the front and back sides are reversed, the power supply coil 304 and the power reception coil 204, and the data coil 305 ′ and the data coil 205 are opposed to each other. Power supply from the wireless communication apparatus 300 to the IC card 200D and transmission / reception of information can be performed.

  In addition, although not shown and described in particular, in the above-described modification, the feeding coils may be provided so as to have a substantially elliptical shape as a line-symmetric arrangement as in Modification (i) described above. Further, the data coil on the IC card 200D side may be provided in a line-symmetric arrangement so as to have a substantially elliptical shape as in the modification (ii), and further, the power reception on the IC card 200D side as in the modification (iii). The coil may be provided in a substantially elliptical shape as a line-symmetric arrangement. In this case, the same effect can be obtained.

(V) Arrangement of data coils so as to surround the power supply coil FIG. 18 shows a power supply coil 304 and data coils 305A ″, 305B ″, 305C ″, 305D provided in the facing surface 303E of the wireless communication apparatus 300 in this modification. FIG. 6 is a diagram illustrating an arrangement configuration of “and an arrangement configuration of a power receiving coil 204 and a data coil 205 provided in the IC card 200E.

  As shown in FIG. 18, in the present modification, the shape of the facing surface 303E of the wireless communication apparatus 300 is a substantially square whose one side is the length of the IC card 200E in the longitudinal direction (vertical direction in FIG. 18). . The feeding coil 304 is provided at a substantially central portion of the facing surface 303E, and the data coils 305A ″ and 305B ″ are on the facing surface 303E, and the straight line L1 that bisects the facing surface 303E in the vertical direction in FIG. The data coils 305C ″ and 305D ″ are provided on both of the pair of line-symmetric positions that are line-symmetric with respect to the line L3, and the line 303E is on the facing surface 303E. Are provided at both of a pair of line-symmetrical positions. Further, in the present modification, as shown in the figure, the data coils 305A ″ and 305B ″ have a length in the straight line L1 direction (left and right direction in FIG. 18) and a length in the straight line L3 direction (up and down direction in FIG. 18). The data coils 305C ″ and 305D ″ are each longer in the direction of the straight line L3 (up and down direction in FIG. 18) than in the straight line L1 direction (left and right direction in FIG. 18). Each is provided. The data coils 305A ″, 305B ″, 305C ″, and 305D ″ are arranged so that both ends thereof overlap each other, and as a result, are provided so as to surround the four sides of the power feeding coil 304.

  On the other hand, on the IC card 200D side, the power receiving coil 204 is provided at a substantially central portion of the IC card 200D, and the data coil 205 is a data coil of the wireless communication device 300 in the card longitudinal direction (vertical direction in FIG. 18). It is a position corresponding to 305A ″ or 305B ″ (data coil 305A ″ in the present modification), and is provided at a substantially central portion in the card short direction (left and right direction in FIG. 18). Similarly to (iv), it may be provided so as to be biased to one side in the short side direction of the card.

  In the present modification, as described above, the data coils 305A ″, 305B ″, 305C ″, 305D ″ on the wireless communication apparatus 300 side are provided so as to surround the four sides of the power supply coil 304. Even when the IC card 200E is rotated in the horizontal direction and the IC card 200E is rotated on the card surface, the power feeding coil 304 and the power receiving coil 204, and the data coil 305 ″ and the data coil 205 can be opposed to each other. Therefore, it is possible to further increase the degree of freedom of the opposing arrangement mode of the IC card 200E and the wireless communication device 300 that can supply power to the IC card 200E and transmit / receive information, and the user of the IC card 200E can use it. Convenience can be further improved.

  Although not particularly illustrated and described, in the above modification, the power supply coil may be provided in a substantially elliptical shape so as to surround the four sides as in the modification (i) described above. Further, the data coil on the IC card 200E side may be provided in a substantially elliptic shape so as to surround the four sides as in the modification (ii), and the power receiving coil on the IC card 200E side may be provided as in the modification (iii). You may provide as a substantially ellipse shape so that it may surround four sides. In this case, the same effect can be obtained.

(2) Increasing power when displaying data In the above embodiment, the amount of power supplied from the wireless communication apparatus 300 to the IC card 200 via the power supply coil 304 and the power receiving coil 204 is not particularly controlled during communication. The power may be increased at the time of data transmission (during display by the liquid crystal display unit 203).

  FIG. 19 is a flowchart showing the detailed procedure of the data writing process in this modification.

  In FIG. 19, the points different from FIG. 6 of the above embodiment are steps S325 and S415. That is, after the power supply of the transmission circuit 306A is turned on in step S320, the power supplied from the power supply 310 to the IC card 200 via the power supply coil 304 and the power reception coil 204 is increased in step S325. Then, after waiting for 5 milliseconds in step S330, display data is transmitted to the IC card 200 in step S340.

  On the other hand, when transmission of all display data is completed in steps S320 to S400 and step S420, or when a write response completion signal is received from the IC card 200, the determination in step S390 is not satisfied, and the process proceeds to step S415. In step S415, the supply power increased in step S325 is restored to the original power.

  The power increase and recovery control is performed by a control signal output from the scanner control unit 309 to a power control circuit (not shown). Alternatively, the feeding coil 304 may be configured as a multiple coil structure including a plurality of coils connected in series, and control may be performed by switching the coils.

  According to this modification, the power supplied to the IC card 200 can be increased as necessary during communication. As a result, sufficient power can be supplied to display the liquid crystal display unit 203 having relatively large power, and display by the liquid crystal display unit 203 can be performed reliably.

(3) Variation of IC card guide means In the above embodiment, the concave portion 302 is provided on the inclined surface 301 of the wireless communication apparatus 300 as a guide means for guiding the facing position of the IC card 200 during communication. Not limited to. That is, for example, the frame member may be provided at positions corresponding to the four corners of the IC card 200 (or corners less than that) on the inclined surface 301. Further, for example, a picture (or character or the like) indicating that may be drawn at the position where the IC card 200 is placed on the inclined surface 301.

  In addition, although not illustrated one by one, the present invention is implemented with various modifications within a range not departing from the gist thereof.

It is a figure showing simply the whole structure of one Embodiment of the radio | wireless communications system of this invention. The figure showing the arrangement structure of the power feeding coil provided in the opposing surface of the wireless communication apparatus which one Embodiment of the radio | wireless communications system of this invention, the arrangement configuration of a data coil, the receiving coil provided in the IC card, and the data coil It is. It is a functional block diagram showing the detail of the functional structure of the IC card and wireless communication apparatus which one Embodiment of the wireless communication system of this invention has. It is a flowchart showing the control procedure performed by the scanner control part of a radio | wireless communication apparatus at the time of communication. It is a flowchart showing the detailed procedure of a card presence detection process in the flowchart shown in FIG. It is a flowchart showing the detailed procedure of the data writing process in the flowchart shown in FIG. It is a flowchart showing the detailed procedure of the card | curd no detection process in the flowchart shown in FIG. It is a flowchart showing the control procedure performed by the card control part of an IC card at the time of communication. It is a flowchart showing the detailed procedure of the command reception process in the flowchart shown in FIG. It is a flowchart showing the detailed procedure of ID response transmission processing in the flowchart shown in FIG. It is a flowchart showing the detailed procedure of the writing / display process in the flowchart shown in FIG. It is the time chart which expressed the exchange of the signal performed at the time of communication between a radio | wireless communication apparatus and an IC card in time series. It is a figure for demonstrating the effect obtained in this embodiment, even if an IC card is turned upside down, even if power supply and information transmission / reception are possible. The figure showing the arrangement configuration of the power supply coil provided in the opposing surface of the wireless communication device, the arrangement configuration of the data coil, the power reception coil provided in the IC card, and the arrangement of the data coil in the modification in which the power supply coil is symmetrically arranged. is there. In a modification in which the data coil on the IC card side is symmetrically arranged, the power supply coil provided in the facing surface of the wireless communication device, the data coil arrangement, the power receiving coil provided in the IC card, and the data coil arrangement FIG. FIG. 7 is a diagram illustrating a power supply coil provided in a facing surface of a wireless communication device, a data coil arrangement configuration, a power reception coil provided in an IC card, and a data coil arrangement configuration in a modification in which the power reception coil is symmetrically arranged. is there. FIG. 7 is a diagram illustrating a power supply coil provided in a facing surface of a wireless communication device, a data coil arrangement configuration, a power receiving coil provided in an IC card, and a data coil arrangement configuration in a modification in which the data coil is arranged horizontally. is there. In a modification in which the data coil is disposed so as to surround the power supply coil, the power supply coil provided in the facing surface of the wireless communication device, the data coil arrangement configuration, the power reception coil provided in the IC card, and the data coil arrangement configuration FIG. It is a flowchart showing the detailed procedure of the data writing process in the modification which increases electric power at the time of data display.

Explanation of symbols

100 wireless communication system 200 IC card (wireless communication medium)
200A IC card (wireless communication medium)
200B IC card (wireless communication medium)
200C IC card (wireless communication medium)
200D IC card (wireless communication medium)
200E IC card (wireless communication medium)
201 surface (medium side arrangement surface)
202 Back side (medium side arrangement surface)
203 Liquid crystal display (display means)
204 Power receiving coil (power receiving unit)
205 Data coil (medium-side information transmitter / receiver)
208 Power switch (second switching means)
300 Wireless communication device 301 Inclined surface (device-side arrangement surface)
302 Concavity (guide means)
303 Opposing surface (opposing part)
303A Opposing surface (opposing part)
303B Opposing surface (opposing part)
303C Opposing surface (opposing part)
303D Opposing surface (opposing part)
303E Opposing surface (opposing part)
304 Power supply coil (power supply unit)
305A Data coil (Information transmission / reception unit)
305B Data coil (Information transmission / reception unit)
308A Power switch (first switching means)
308B Power switch (first switching means)

Claims (14)

A wireless communication medium having a medium side arrangement surface for arranging a power receiving unit to which power is supplied and a medium side information transmission / reception unit for transmitting and receiving information;
A power supply unit that supplies power to the power reception unit, and a wireless communication device including a device side arrangement surface for arranging a device side information transmission / reception unit that transmits and receives information with the medium side information transmission / reception unit,
A wireless communication system that performs communication between the wireless communication medium and a wireless communication device with the medium-side placement surface and the device-side placement surface facing each other,
The device side information transmission / reception unit,
The opposing portion facing the wireless communication medium on the device-side arrangement surface is provided at both of a pair of line-symmetrical positions that are line-symmetric with respect to a first straight line that bisects the first linear direction length. Are provided to be longer than the direction length substantially perpendicular to the first straight line,
The medium side information transmitting / receiving unit
Provided at a position facing at the time of communication with any of the apparatus side information transmitting and receiving unit provided at both of the line symmetrical positions,
The power supply unit,
Provided at an intermediate position between the apparatus side information transmitting and receiving units provided at both of the line symmetrical positions,
The power receiving unit
A wireless communication system, wherein the wireless communication system is provided at a position facing the power feeding unit during communication. The wireless communication system according to claim 1 , wherein
The device side information transmission / reception unit,
Provided in both of a pair of line-symmetrical positions that are line-symmetric with respect to a second straight line that is substantially perpendicular to the first straight line, and the second linear direction length is greater than the first linear direction length. A wireless communication system characterized by being provided so as to be longer. A wireless communication medium having a medium side arrangement surface for arranging a power receiving unit to which power is supplied and a medium side information transmission / reception unit for transmitting and receiving information;
A power supply unit that supplies power to the power reception unit, and a wireless communication device including a device side arrangement surface for arranging a device side information transmission / reception unit that transmits and receives information with the medium side information transmission / reception unit,
A wireless communication system that performs communication between the wireless communication medium and a wireless communication device with the medium-side placement surface and the device-side placement surface facing each other,
The power supply unit,
The opposing portion facing the wireless communication medium on the device-side arrangement surface is provided at both of a pair of line-symmetrical positions that are line-symmetric with respect to a first straight line that bisects the first linear direction length. Are provided to be longer than the direction length substantially perpendicular to the first straight line,
The power receiving unit
Provided at a position facing at the time of communication with any of the power supply units provided at both of the line symmetrical positions,
The device side information transmission / reception unit,
Provided at an intermediate position between the power supply units provided at both of the line symmetrical positions,
The medium side information transmitting / receiving unit
Provided at a position facing the device-side information transmission / reception unit during communication
A wireless communication system. The wireless communication system according to claim 3,
The power supply unit,
Provided in both of a pair of line-symmetrical positions that are line-symmetric with respect to a second straight line that is substantially perpendicular to the first straight line, and the second linear direction length is greater than the first linear direction length. A wireless communication system characterized by being provided so as to be longer. A wireless communication medium having a medium side arrangement surface for arranging a power receiving unit to which power is supplied and a medium side information transmission / reception unit for transmitting and receiving information;
A power supply unit that supplies power to the power reception unit, and a wireless communication device including a device side arrangement surface for arranging a device side information transmission / reception unit that transmits and receives information with the medium side information transmission / reception unit,
A wireless communication system that performs communication between the wireless communication medium and a wireless communication device with the medium-side placement surface and the device-side placement surface facing each other,
The medium side information transmitting / receiving unit
The medium-side arrangement surface is provided at both of a pair of line-symmetric positions that are line-symmetric with respect to a third straight line that bisects the medium-side arrangement surface, and the length of the third straight line direction is substantially perpendicular to the third straight line. Provided to be longer than the length of the direction,
The device side information transmission / reception unit,
Provided at a position facing at the time of communication with any one of the medium side information transmitting and receiving units provided at both of the line symmetrical positions,
The power receiving unit
Provided at an intermediate position between the medium side information transmitting / receiving units provided at both of the line symmetrical positions,
The power supply unit,
Provided at a position facing the power receiving unit during communication
A wireless communication system. The wireless communication system according to claim 5, wherein
The medium side information transmitting / receiving unit
It is provided at both of a pair of line symmetrical positions that are line symmetric with respect to a fourth straight line that is substantially perpendicular to the third straight line, and the fourth linear direction length is greater than the third linear direction length. A wireless communication system characterized by being provided so as to be longer. A wireless communication medium having a medium side arrangement surface for arranging a power receiving unit to which power is supplied and a medium side information transmission / reception unit for transmitting and receiving information;
A power supply unit that supplies power to the power reception unit, and a wireless communication device including a device side arrangement surface for arranging a device side information transmission / reception unit that transmits and receives information with the medium side information transmission / reception unit,
A wireless communication system that performs communication between the wireless communication medium and a wireless communication device with the medium-side placement surface and the device-side placement surface facing each other,
The power receiving unit
The medium-side arrangement surface is provided at both of a pair of line-symmetric positions that are line-symmetric with respect to a third straight line that bisects the medium-side arrangement surface, and the length of the third straight line direction is substantially perpendicular to the third straight line. Provided to be longer than the length of the direction,
The power supply unit,
Provided at a position facing at the time of communication with any of the power receiving units provided at both of the line symmetrical positions,
The medium side information transmission / reception unit,
Provided at an intermediate position between the power receiving units provided at both of the line symmetrical positions,
The device side information transmitting / receiving unit
Provided at a position facing the medium side information transmitting / receiving unit during communication
A wireless communication system. The wireless communication system according to claim 7, wherein
The power receiving unit
It is provided at both of a pair of line symmetrical positions that are line symmetric with respect to a fourth straight line that is substantially perpendicular to the third straight line, and the fourth linear direction length is greater than the third linear direction length. A wireless communication system characterized by being provided so as to be longer. The wireless communication system according to any one of claims 1 to 8 ,
A wireless communication system, characterized in that guide means for guiding the facing position of the wireless communication medium at the time of communication is provided at the facing portion of the device side arrangement surface. The wireless communication system according to any one of claims 1 to 9 ,
A wireless communication system, wherein a medium-side arrangement surface direction dimension of the power receiving unit is configured to be larger than a device-side arrangement surface direction dimension of the power feeding unit. The wireless communication system according to any one of claims 1 to 10 ,
The medium is configured such that when the device-side information transmission / reception unit is in a transmission state, the medium-side information transmission / reception unit is switched to a reception state, and when the device-side information transmission / reception unit is in a reception state, the medium-side information transmission / reception unit is switched to a transmission state. A wireless communication system, comprising: cooperation control means for controlling the side information transmission / reception unit and the apparatus side information transmission / reception unit in cooperation with each other. The wireless communication system according to any one of claims 1 to 11 ,
The wireless communication device
A first switching means for switching between a transmission state and a reception state of the device-side information transmission / reception unit;
The wireless communication medium is
A wireless communication system, comprising: a second switching unit that switches between a transmission state and a reception state of the medium-side information transmission / reception unit. The wireless communication system according to any one of claims 1 to 12 ,
The wireless communication medium is
A wireless communication system comprising display means for performing display related to information transmitted and received between the device-side information transmission / reception unit and the medium-side information transmission / reception unit. The wireless communication system according to claim 13 ,
The wireless communication device
A wireless communication system comprising: a power control unit configured to control power supplied from the power source to the display unit via the power feeding unit and the power receiving unit.

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