JP2010193132A - Transceiver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a transceiver capable of saving power. <P>SOLUTION: The transceiver includes a casing 1, a transmission circuit 2 and reception circuits 3A and 3B provided inside the casing 1, a first electrode 4 connected to the transmission circuit 2 and the reception circuits 3A and 3B, a second electrode 5 connected to the transmission circuit 2 and the reception circuit 3A, and a third electrode 6 connected to the reception circuit 3B. The casing 1 has two surfaces 11 and 12 facing each other through the inside of the casing 1. The first electrode 4 is provided on one surface 11, and the second electrode 5 and the third electrode 6 are provided on the other surface 12 and disposed as if the same electrode is bisected. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a transceiver that performs communication via an electric field transmission medium.

  In recent years, there has been research on communication performed by inducing an electric field in an electric field transmission medium such as a human body (see Non-Patent Document 1).

  FIG. 5 is a cross-sectional view showing a configuration of a transceiver used for such communication.

  The transceiver has a first electrode 401 and a second electrode 501, and performs half-duplex communication with a counterpart transceiver (not shown) using the human body 9000 in contact with the latter as an electric field transmission medium. In a transmission period in which a signal is transmitted to the other party, the transmission circuit in the transmission / reception circuit 200 applies a signal between the first electrode 401 and the second electrode 501. In a reception period in which a signal is received from the other party, the receiving circuit in the transmission / reception circuit 200 receives a signal from the other party generated between the first electrode 401 and the second electrode 501. That is, the transmission / reception circuit 200 uses the transmission circuit in the transmission period and switches to the reception circuit in the reception period.

"Redtacton", [online], Nippon Telegraph and Telephone Corporation, [Search February 1, 2008], Internet [URL: http://www.redracton.com/]

  The transceiver is used by being carried by a person, for example. In this case, power is supplied to the circuit by a secondary battery (battery). In order to make the battery last longer, it is preferable to save power in the circuit when the transceiver is not carried. However, in the transceiver of FIG. 5, it cannot be determined whether or not the transceiver is carried, and thus power saving cannot be achieved.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a transceiver capable of saving power.

  A transceiver according to a first aspect of the present invention includes a housing, a transmission circuit and first and second reception circuits provided in the housing, and the housing facing each other through the interior of the housing. A first electrode provided on one of the two surfaces of the body and connected to the transmitting circuit and the first and second receiving circuits, and provided on the other surface of the two surfaces, and the same electrode is divided into two One of the two electrodes arranged as described above, the second electrode connected to the transmission circuit and the first reception circuit, and the other electrode on the other surface, the second reception circuit The transmission circuit applies a signal between the first electrode and the second electrode in the transmission period, and the first reception circuit is in the reception period. , A signal transmitted from a transceiver of a communication partner, wherein the first electrode and the first electrode The second reception circuit receives a signal generated between the first electrode and the third electrode during the transmission period, the signal generated between the first electrode and the third electrode. It is characterized by detecting.

  A transceiver according to a second aspect of the present invention includes a housing, a transmitting circuit and a receiving circuit provided in the housing, and two surfaces of the housing facing each other through the inside of the housing. A first electrode provided on one surface and connected to the transmitting circuit and the receiving circuit, and one of two electrodes provided on the other surface of the two surfaces and arranged so that the same electrode is divided into two A second electrode connected to the transmission circuit and a third electrode connected to the reception circuit on the other side of the other surface, the transmission circuit having a transmission period A signal is applied between the first electrode and the second electrode, and the reception circuit transmits a signal transmitted from the transmission circuit during the transmission period between the first electrode and the third electrode. During the reception period Characterized in that receiving a signal produced during the A signal transmitted first electrode and the third electrode from over server.

  A transceiver according to a third aspect of the present invention includes a housing, a transmitting circuit and a receiving circuit provided in the housing, and two surfaces of the housing that are opposed to each other through the inside of the housing. One of the two electrodes provided on one side and arranged so that the same electrode is divided into two, the first electrode connected to the transmission circuit, and the other side of the two sides, One of the two electrodes arranged in such a manner that the other identical electrode is divided into two, the second electrode connected to the transmission circuit, and the other electrode on the one surface, and A third electrode connected to the other electrode on the other surface, and a fourth electrode connected to the receiving circuit, wherein the transmitting circuit is configured to transmit the first electrode and the A signal is applied between the second electrodes, and the receiving circuit A signal transmitted from a transmission circuit and detected between the third electrode and the fourth electrode, and a signal transmitted from a transceiver of a communication partner in a reception period; A signal generated between the fourth electrodes is received.

  According to the present invention, when the receiving circuit cannot receive a signal, communication with the other party is also impossible, so that it is possible to reduce the power consumption of the circuit necessary for communication with the other party.

It is sectional drawing which shows the structure of the transceiver which concerns on 1st Embodiment. It is sectional drawing which shows the structure of the transceiver which concerns on 2nd Embodiment. It is sectional drawing which shows the structure of the transceiver which concerns on 3rd Embodiment. It is sectional drawing which shows the structure of the transceiver which concerns on 4th Embodiment. It is sectional drawing which shows the structure of the conventional transceiver.

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

[First Embodiment]
FIG. 1 is a cross-sectional view showing the configuration of the transceiver according to the first embodiment.

  The transceiver includes a housing 1, a transmission circuit 2 and reception circuits 3A and 3B provided in the housing 1, a first electrode 4 connected to the transmission circuit 2 and the reception circuits 3A and 3B, and a transmission circuit 2. And a second electrode 5 connected to the receiving circuit 3A and a third electrode 6 connected to the receiving circuit 3B. For example, the first electrode 4 is connected to the ground of the transmission circuit 2 and the reception circuits 3A and 3B. The housing 1 includes two surfaces 11 and 12 that face each other through the inside of the housing 1. The first electrode 4 is provided on the one surface 11. The second electrode 5 and the third electrode 6 are provided on the other surface 12 and are arranged so that the same electrode is divided into two. Each electrode has conductivity, for example, metal. Hereinafter, the same applies to the electrodes.

  The transceiver performs half-duplex communication with a partner transceiver (not shown) using the human body 9 as an electric field transmission medium. In a transmission period in which a signal is transmitted to the other party, the transmission circuit 2 applies a signal between the first electrode 4 and the second electrode 5, and the reception circuit 3 B is generated between the first electrode 4 and the third electrode 6. Detect the signal.

  When the transceiver is carried by a person and the second electrode 5 and the third electrode 6 are in contact with the human body 9, a signal is transmitted from the second electrode 5 to the third electrode 6 via the human body 9, and the first electrode 4 A signal is also generated between the first electrode 6 and the third electrode 6. Therefore, in this case, the receiving circuit 3 </ b> B can receive a signal generated between the first electrode 4 and the third electrode 6. When the second electrode 5 and the third electrode 6 are in contact with the human body 9, the receiving circuit 3 </ b> A causes the counterpart that is generated between the first electrode 4 and the second electrode 5 during a reception period in which a signal is received from the counterpart. The signal from is received.

  On the other hand, when the second electrode 5 and the third electrode 6 are not in contact with the human body 9, no signal is transmitted from the second electrode 5 to the third electrode 6, and the receiving circuit 3B cannot receive the signal. When the third electrode 6 is not in contact with the human body 9, the second electrode 5 is not in contact with the human body 9, so the receiving circuit 3 </ b> A cannot receive a signal from the other party and communicates with the other party. A circuit (such as the receiving circuit 3A) necessary for the above is unnecessary. Therefore, when the receiving circuit 3B cannot receive a signal, it is possible to save power of a circuit necessary for communication with the other party.

  In addition, since a signal may be erroneously transmitted from the other party during the transmission period, the reception circuit 3B uses the identification information of its own transceiver included in the signal transmitted by the transmission circuit 2 as the identification information of the other transceiver. You may make it detect by distinguishing.

  Therefore, according to the first embodiment, when the receiving circuit 3B cannot receive a signal, communication with the other party is also impossible, so that it is possible to achieve power saving of a circuit necessary for communication with the other party.

[Second Embodiment]
FIG. 2 is a cross-sectional view illustrating a configuration of a transceiver according to the second embodiment.

  The transceiver is connected to the housing 10, the transmission circuit 20 and the reception circuit 30 provided inside the housing 10, the first electrode 40 connected to the transmission circuit 20 and the reception circuit 30, and the transmission circuit 20. The second electrode 50 and the third electrode 60 connected to the receiving circuit 30 are included. For example, the first electrode 40 is connected to the ground of the transmission circuit 20 and the reception circuit 30. The housing 10 includes two surfaces 13 and 14 that face each other through the inside of the housing 10. The first electrode 40 is provided on the one surface 13. The second electrode 50 and the third electrode 60 are provided on the other surface 14 and are arranged so that the same electrode is divided into two.

  The transceiver performs half-duplex communication with a partner transceiver (not shown) using the human body 90 as an electric field transmission medium. In the transmission period, the transmission circuit 20 applies a signal between the first electrode 40 and the second electrode 50, and the reception circuit 30 detects a signal generated between the first electrode 40 and the third electrode 60.

  When the transceiver is carried by a person and the second electrode 50 and the third electrode 60 are in contact with the human body 90, a signal is transmitted from the second electrode 50 to the third electrode 60 via the human body 90, and the first electrode 40 A signal is also generated between the first electrode 60 and the third electrode 60. Therefore, in this case, the receiving circuit 30 can receive a signal generated between the first electrode 40 and the third electrode 60. In addition, the receiving circuit 30 receives a signal from a partner generated between the first electrode 40 and the third electrode 60 in the reception period.

  On the other hand, when the second electrode 50 and the third electrode 60 are not in contact with the human body 90, no signal is transmitted from the second electrode 50 to the third electrode 60, and the receiving circuit 30 cannot receive the signal. When the third electrode 60 is not in contact with the human body 90, a signal from the other party cannot be received, and a circuit necessary for communication with the other party is unnecessary. Therefore, when the receiving circuit 30 cannot receive a signal, power saving of such a circuit can be achieved.

  In the transmission period, the reception circuit 30 may detect the identification information of its own transceiver included in the signal transmitted by the transmission circuit 20 separately from the identification information of the counterpart transceiver.

  Therefore, according to the second embodiment, when the receiving circuit 30 cannot receive a signal, communication with the other party is also impossible, so that it is possible to achieve power saving of a circuit necessary for communication with the other party.

[Third Embodiment]
FIG. 3 is a cross-sectional view illustrating a configuration of a transceiver according to the third embodiment.

  The transceiver has a configuration similar to that of the transceiver according to the second embodiment, and the same reference numerals are given to the same components. Hereinafter, differences from the second embodiment will be described.

  The surface portion 40 </ b> S of the first electrode 40 has a convex portion, whereby the contact area between the human body 90 and the first electrode 40 is reduced, and when the first electrode 40 contacts the human body 90, a sense of incongruity occurs. Therefore, the transceiver is carried so that the second electrode 50 and the third electrode 60 on the opposite side naturally touch the human body 90. Therefore, when the transceiver is carried, the receiving circuit 30 can always detect the signal. The same effect can be obtained even if the surface portion 40S has a recess.

  Therefore, according to the third embodiment, it is possible to reduce the power consumption of a circuit necessary for communication with the other party, and it is uncomfortable when the first electrode 40 having a convex portion contacts the human body. As a result, the transceiver is carried so that the second electrode 50 and the third electrode 60 naturally touch the human body 90, so that communication with the other party can be reliably performed.

  In addition, although the difference with 2nd Embodiment was demonstrated, you may provide a convex part or a recessed part in the surface part of the 1st electrode 4 in 1st Embodiment.

[Fourth Embodiment]
FIG. 4 is a cross-sectional view illustrating a configuration of a transceiver according to the fourth embodiment.

  Case 100, transmission circuit 21 and reception circuit 31 provided inside case 100, first electrode 41 and second electrode 51 connected to the transmission circuit, and third electrode connected to reception circuit 31 61 and a fourth electrode 71. For example, each electrode is not connected to the ground of the transmission circuit 21 and the reception circuit 31 but is brought into a floating state from the ground. The housing 100 includes two surfaces 110 and 120 that face each other through the inside of the housing 100. The first electrode 41 and the third electrode 61 are provided on one surface 110 and are arranged so that the same electrode is divided into two. The second electrode 51 and the fourth electrode 71 are provided on the other surface 120 and are arranged so that the same electrode is divided into two.

  The transceiver performs half-duplex communication with a counterpart transceiver (not shown) using the human body 900 as an electric field transmission medium. In the transmission period, the transmission circuit 21 applies a signal between the first electrode 41 and the second electrode 51, and the reception circuit 31 detects a signal generated between the third electrode 61 and the fourth electrode 71.

  When the transceiver is carried by a person and the second electrode 51 and the fourth electrode 71 are in contact with the human body 900, a signal is transmitted from the second electrode 51 to the fourth electrode 71 via the human body 900. On the other hand, a predetermined potential difference is generated between the first electrode 41 and the third electrode 61 through the ground. Therefore, a signal is also generated between the third electrode 61 and the fourth electrode 71, and the receiving circuit 31 can receive a signal generated between the third electrode 61 and the fourth electrode 71. In addition, the receiving circuit 31 receives a signal from the other party generated between the third electrode 61 and the fourth electrode 71 in the receiving period.

  On the other hand, when the second electrode 51 and the fourth electrode 71 are not in contact with the human body 900, no signal is transmitted from the second electrode 51 to the fourth electrode 71, and the receiving circuit 31 cannot receive the signal. When the fourth electrode 71 is not in contact with the human body 900, a signal from the other party cannot be received, and a circuit necessary for communication with the other party is not necessary. Therefore, when the receiving circuit 31 cannot receive a signal, power saving of such a circuit can be achieved.

  Although not shown, when the transceiver is carried by a person and the first electrode 41 and the third electrode 61 are in contact with the human body 900, a signal is transmitted from the first electrode 41 to the third electrode 61 via the human body 900. . On the other hand, a predetermined potential difference is generated between the second electrode 51 and the fourth electrode 71 through the ground. Accordingly, similarly, the receiving circuit 31 can receive a signal generated between the third electrode 61 and the fourth electrode 71.

  On the other hand, when the first electrode 41 and the third electrode 61 are not in contact with the human body 900, no signal is transmitted from the first electrode 41 to the third electrode 61, and the receiving circuit 31 cannot receive the signal. When the fourth electrode 71 is not in contact with the human body 900, a signal from the other party cannot be received, and a circuit necessary in that case is unnecessary. Therefore, when the receiving circuit 31 cannot receive a signal, power saving of such a circuit can be achieved.

  In the transmission period, the reception circuit 31 may detect the identification information of its own transceiver included in the signal transmitted by the transmission circuit 21 separately from the identification information of the counterpart transceiver.

  Therefore, according to the fourth embodiment, it is possible to achieve power saving of a circuit necessary for communication with the other party, and the second electrode 51 and the fourth electrode 71 are in contact with the human body 900. Even if it is a case where the 1st electrode 41 and the 3rd electrode 61 are contacting the human body 900, communication with an other party can be performed.

  In each embodiment, the electric field transmission medium is a human body as an example. However, the present invention is not limited to this, and communication using a transceiver can be performed using any electric field transmission medium.

DESCRIPTION OF SYMBOLS 1, 10, 100 ... Case 2 ... Transmission circuit 200 ... Transmission / reception circuit 3A, 3B, 30, 31 ... Reception circuit 4, 40, 41, 401 ... 1st electrode 5, 50, 51, 501 ... 2nd electrode 6, 60, 61 ... third electrode 9, 90, 900, 9000 ... human body 11, 12, 14, 14, 110, 120 ... housing surface 20, 21 ... transmission circuit 40S ... surface portion 71 ... fourth electrode

Claims (4)

A housing,
A transmission circuit and first and second reception circuits provided in the housing;
A first electrode provided on one surface of the two surfaces of the housing, facing each other through the interior of the housing, and connected to the transmitting circuit and the first and second receiving circuits;
A second electrode provided on the other surface of the two surfaces and arranged so that the same electrode is divided into two, the second electrode connected to the transmission circuit and the first reception circuit;
A third electrode connected to the second receiving circuit, the other electrode on the other surface,
The transmission circuit applies a signal between the first electrode and the second electrode in a transmission period,
The first receiving circuit receives a signal generated between the first electrode and the second electrode, which is a signal transmitted from a transceiver of a communication partner in a reception period,
The transceiver, wherein the second reception circuit detects a signal transmitted from the transmission circuit and generated between the first electrode and the third electrode during a transmission period. A housing,
A transmission circuit and a reception circuit provided inside the housing;
A first electrode provided on one surface of the two surfaces of the housing and facing each other through the interior of the housing, connected to the transmitting circuit and the receiving circuit;
A second electrode provided on the other surface of the two surfaces and arranged to divide the same electrode into two parts, the second electrode connected to the transmission circuit;
A third electrode connected to the receiving circuit, the other electrode on the other surface,
The transmission circuit applies a signal between the first electrode and the second electrode in a transmission period,
The reception circuit detects a signal transmitted from the transmission circuit during the transmission period and generated between the first electrode and the third electrode, and is transmitted from the transceiver of the communication partner during the reception period. A transceiver that receives a signal generated between the first electrode and the third electrode. The transceiver according to claim 1, wherein a surface portion of the first electrode has a concave portion or a convex portion. A housing,
A transmission circuit and a reception circuit provided inside the housing;
One of the two electrodes provided on one surface of the two surfaces of the housing and facing each other through the interior of the housing, and arranged so that the same electrode is divided into two, the transmitting circuit A first electrode connected to
A second electrode provided on the other surface of the two surfaces and arranged to divide the other identical electrode into two, the second electrode connected to the transmission circuit;
A third electrode connected to the receiving circuit, the other electrode on the one surface;
A fourth electrode connected to the receiving circuit, the other electrode on the other surface,
The transmission circuit applies a signal between the first electrode and the second electrode in a transmission period,
The reception circuit detects a signal transmitted from the transmission circuit during the transmission period and generated between the third electrode and the fourth electrode, and is transmitted from the transceiver of the communication partner during the reception period. A transceiver that receives a signal generated between the third electrode and the fourth electrode.

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