JP2010199918A - Radio communication device, radio communication system, radio communication method, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a radio communication device capable of saving power in bidirectional short-distance radio communication, a radio communication system, a radio communication method, and a program. <P>SOLUTION: This radio communication device is carried by a user and executes bidirectional radio communication with another radio communication device, and includes a communication means to transmit radio waves to the other radio communication device while receiving radio waves from the other radio communication device, and a communication control means to control the communication means, wherein the communication control means controls the communication means to operate when acceleration generated by movement of the user carrying the radio communication device is detected, and executes at least one of control to stop the communication means and control to stop transmission/reception of radio waves to the other radio communication device when the acceleration is not detected. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a wireless communication apparatus, a wireless communication system, a wireless communication method, and a program that perform short-range wireless communication.

  An example of a wireless communication system related to the present invention is shown in FIG. Hereinafter, the example shown in FIG. 7 will be described. FIG. 7 shows an example in which security of a PC (Personal Computer) 50 placed on a floor such as an office is realized by wireless communication.

  In FIG. 7, a fixed wireless communication device (not shown) is mounted on the PC 50, and a mobile wireless communication device (not shown) is mounted on the employee ID card 60. The fixed wireless communication device and the mobile wireless communication device include a communication control microcomputer and a communication circuit (a transmission circuit and a reception circuit), and can perform two-way wireless communication in a short distance. In addition, the fixed wireless communication device and the mobile wireless communication device recognize a preset communication partner and perform communication only with the recognized communication partner. An example of such near field communication technology is disclosed in Patent Document 1, for example. In FIG. 7, the fixed wireless communication device of the PC 50 and the mobile wireless communication device of the employee card 60 are set in advance so that they can recognize each other.

  As shown in FIG. 7A, when an employee (user) who is the owner of the employee ID card 60 is in the state of being close to the PC 50 to perform work on the PC 50, for example (when it is within a communicable range). ), The fixed wireless communication device of the PC 50 and the mobile wireless communication device of the employee ID card 60 recognize each other and perform wireless communication. When wireless communication is performed in this way, the fixed wireless communication apparatus outputs, for example, a signal indicating that wireless communication is being performed to the control unit of the PC 50. While the signal is being input, the control unit of the PC 50 unlocks the PC 50 so that the user can operate it.

  As shown in FIG. 7B, when the employee who is the owner of the employee card 60 is away from the PC 50 and in a range where wireless communication is impossible, the fixed wireless communication device of the PC 50 and the employee card 60 Wireless communication with the mobile wireless communication device is not performed. When wireless communication is not performed in this way, the fixed wireless communication device does not output a signal indicating that wireless communication is being performed, for example, to the control unit of the PC 50. While the signal is not input, the control unit of the PC 50 locks the PC 50 so that it cannot be operated by the user.

JP 2008-154004 A

  As described above, wireless communication systems that implement predetermined control (for example, security) using short-range wireless communication are now widespread, but have the following problems in terms of power consumption.

  For example, in the example shown in FIG. 7, both the fixed wireless communication device of the PC 50 and the mobile wireless communication device of the employee card 60 must always transmit radio waves (signals) in order to detect the communication partner. There is. That is, for example, when the user remains close to the PC 50 or when the user is away from the PC 50 and cannot communicate, a detection operation (an operation for transmitting a radio wave to detect a communication partner) is necessarily required. Even when this is not the case, the detection operation is constantly performed. Since power consumption increases in proportion to the detection operation time, the fixed wireless communication device of the PC 50 and the mobile wireless communication device of the employee ID card 60 uselessly consume power. In particular, since the mobile wireless communication device of the employee ID card 60 that is carried uses a battery, there is a problem that the battery life is shortened due to wasteful power consumption.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a wireless communication device, a wireless communication system, a wireless communication method, and a program that can save power in bidirectional short-range wireless communication. .

  In order to achieve such an object, a wireless communication device of the present invention is a device carried by a user as a first aspect, and is a wireless communication device that performs bidirectional wireless communication with another wireless communication device. A communication unit that transmits radio waves to another wireless communication device while receiving radio waves from the other wireless communication device, and a communication control unit that controls the communication unit. If the acceleration generated by the operation of the user carrying the device is detected, the communication means is controlled to operate. On the other hand, if the acceleration is not detected, the control to stop the communication means and other wireless communication devices are controlled. Then, at least one of the control for stopping transmission / reception of radio waves is performed.

  According to a second aspect of the present invention, there is provided a wireless communication device that is arranged at a predetermined location, and that performs bidirectional wireless communication with another wireless communication device, the other wireless communication device. Communication means for transmitting radio waves to another wireless communication device while receiving radio waves from the communication device, and communication control means for controlling the communication means. The communication control means is predetermined in the vicinity of the wireless communication device. If the presence of a user carrying another wireless communication device within the range is detected, the communication means is controlled to operate. On the other hand, if the presence of the user is not detected, the communication means is stopped. It is characterized by doing.

  The wireless communication system of the present invention is characterized in that the wireless communication apparatus as the first aspect of the present invention and the wireless communication apparatus as the second aspect of the present invention perform bidirectional wireless communication.

  According to a first aspect of the present invention, there is provided a wireless communication method performed by a wireless communication device that is a device carried by a user and performs bidirectional wireless communication with another wireless communication device. The device performs a communication operation of transmitting a radio wave to another wireless communication device while receiving a radio wave from another wireless communication device, and when an acceleration generated by an operation of a user carrying the wireless communication device is detected , While performing a communication operation, if acceleration is not detected, at least one of a control operation for stopping the communication operation and a control operation for stopping transmission / reception of radio waves to other wireless communication devices is performed. .

  The wireless communication method of the present invention is a wireless communication method performed by a wireless communication device that is a device arranged at a predetermined location as a second aspect and performs bidirectional wireless communication with another wireless communication device, The wireless communication device performs a communication operation of transmitting the radio wave to the other wireless communication device while receiving the radio wave from the other wireless communication device, and the other wireless communication device is in a predetermined range near the wireless communication device. The communication operation is performed when the presence of the user carrying the mobile phone is detected, and the communication operation is stopped when the presence of the user is not detected.

  As a first aspect, the program of the present invention is a device that is carried by a user, and is a program that is executed by a wireless communication device that performs bidirectional wireless communication with another wireless communication device. While receiving radio waves from other wireless communication devices, execute communication processing to transmit radio waves to other wireless communication devices, and if acceleration caused by the action of the user carrying the wireless communication device is detected, While the process is executed, if acceleration is not detected, at least one of a control process for stopping the communication process and a control process for stopping transmission / reception of radio waves to other wireless communication devices is performed.

  According to a second aspect of the present invention, there is provided a program that is a device that is arranged at a predetermined location and that is executed by a wireless communication device that performs bidirectional wireless communication with another wireless communication device. In addition, while receiving a radio wave from another wireless communication device, the communication processing for transmitting the radio wave to the other wireless communication device is executed, and the other wireless communication device is carried within a predetermined range near the wireless communication device. When the presence of the user is detected, the communication process is executed. On the other hand, when the presence of the user is not detected, the communication process is stopped.

  According to the present invention, it is possible to save power in bidirectional short-range wireless communication.

It is a block diagram which shows an example of a structure of the radio | wireless communications system which concerns on one Embodiment of this invention. It is a figure which shows an example of the operating environment of the radio | wireless communications system which concerns on one Embodiment of this invention. It is a sequence chart which shows an example of operation | movement of the radio | wireless communications system which concerns on one Embodiment of this invention. It is a sequence chart which shows an example of operation | movement of the radio | wireless communications system which concerns on one Embodiment of this invention. It is a sequence chart which shows an example of operation | movement of the radio | wireless communications system which concerns on one Embodiment of this invention. It is a sequence chart which shows an example of operation | movement of the radio | wireless communications system which concerns on one Embodiment of this invention. It is a figure which shows an example of the radio | wireless communications system relevant to this invention.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments (embodiments) for carrying out the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a diagram illustrating a configuration of a wireless communication system and a wireless communication apparatus according to an embodiment of the present invention. As shown in FIG. 1, the wireless communication system of the present embodiment includes a fixed wireless communication device 1 and a pyroelectric sensor 3, a mobile wireless communication device 2 and an acceleration sensor 4. The fixed wireless communication device 1 and the pyroelectric sensor 3 are provided in the PC 5, and the mobile wireless communication device 2 and the acceleration sensor 4 are provided in the mobile phone 6.

  The PC 5 is an information processing apparatus that is arranged on the floor of the office and is operated and used by a predetermined employee. In the present embodiment, as an example, it is assumed that the PC 5 is placed in the seat of the employee x (user) and is used exclusively by the employee x.

  The mobile phone 6 is, for example, an information processing device that is carried by each employee and is operated and used by the employee who carries the phone. In the present embodiment, as an example, it is assumed that the mobile phone 6 is carried by the employee x and is used exclusively by the employee x.

  A fixed wireless communication device (an example of a wireless communication device) 1 includes a communication control microcomputer (an example of a communication control unit) 10, a transmission circuit (an example of a communication unit) 12, a reception circuit (an example of a communication unit) 13, an antenna (communication) An example of means) 14 is provided. The communication control microcomputer 10 is connected to the transmission circuit 12, the reception circuit 13, and the pyroelectric sensor 3 through a bus. The transmission circuit 12 transmits radio waves via the antenna 14. The receiving circuit 13 receives radio waves transmitted from the mobile wireless communication device 2. The communication control microcomputer 10 outputs a control signal to the transmission circuit 12 and the reception circuit 13 to perform control. In particular, the communication control microcomputer 10 controls the transmission circuit 12 and the reception circuit 13 so as to transmit radio waves to the mobile radio communication device 2 while receiving radio waves from the mobile radio communication device 2. In the present embodiment, the transmission circuit 12 and the reception circuit 13 are configured separately, but may be configured to perform transmission and reception with a single communication circuit.

  A pyroelectric sensor (an example of a person detection unit) 3 is a sensor that detects the presence of a person in a predetermined range. Since the pyroelectric sensor 3 is generally used at present, a detailed description thereof is omitted here. The pyroelectric sensor 3 outputs a signal (detection signal) indicating the detection result to the communication control microcomputer 10.

  A mobile wireless communication device (an example of a wireless communication device) 2 includes a communication control microcomputer (an example of communication control means) 20, a transmission circuit (an example of communication means) 22, a reception circuit (an example of communication means) 23, an antenna (communication). An example of means) 24 is provided. The communication control microcomputer 20 is connected to the transmission circuit 22, the reception circuit 23, and the acceleration sensor 4 via a bus. The transmission circuit 22 transmits radio waves via the antenna 24. The receiving circuit 23 receives a radio wave transmitted from the fixed wireless communication device 1. The communication control microcomputer 20 outputs a control signal to the transmission circuit 22, the reception circuit 23, and the acceleration sensor 4 to perform control. In particular, the communication control microcomputer 20 controls the transmission circuit 22 and the reception circuit 23 so as to transmit radio waves to the fixed wireless communication device 1 while receiving radio waves from the fixed wireless communication device 1. In the present embodiment, the transmission circuit 22 and the reception circuit 23 are configured separately, but may be configured to perform transmission and reception with a single communication circuit.

  The acceleration sensor (an example of an acceleration detection unit) 4 is a sensor that detects acceleration accompanying vibration or the like applied to the mobile phone 6 (or the mobile wireless communication device 2). Since the acceleration sensor 4 is generally used at present, a detailed description thereof is omitted here. The acceleration sensor 4 outputs a signal (detection signal) indicating the detection result to the communication control microcomputer 20.

  The fixed wireless communication device 1 and the mobile wireless communication device 2 are set in advance to recognize a communication partner by receiving radio waves from each other in order to perform bidirectional communication. In addition, as a communication method of bidirectional communication, a conventionally used one can be applied.

  Next, operations (one embodiment of the wireless communication method of the present invention) in the wireless communication system of the present embodiment configured as described above will be described with reference to the flowcharts of FIGS. 2 and 3 to 6.

  FIG. 2 is a diagram illustrating an example of an environment to which the wireless communication system of the present embodiment is applied. In FIG. 2, A indicates the seat position of the employee x, B indicates the detectable range of the pyroelectric sensor 3, and C indicates all ranges other than B. C includes a communicable range (range indicated by a dotted line in the drawing) of the fixed wireless communication device 1 and the mobile wireless communication device 2. In addition, arrows a, b, c, and d in the figure indicate the movement of the employee x carrying the mobile phone 6.

  First, in the case of the arrow a in FIG. 2, that is, the operation when the employee x in C moves to B will be described with reference to FIG.

  When the employee x is at C, in the fixed wireless communication apparatus 1, the transmission circuit 12 and the reception circuit 13 are stopped, and the pyroelectric sensor 3 is operating but no reaction (step A1). In the description of the present embodiment, “stop” refers to a state in which power consumption is not performed, and “operation” refers to a state in which power consumption is performed. The “no reaction” of the pyroelectric sensor 3 refers to a state in which the presence of a person in B is being detected (in operation), but the presence of a person has not been detected.

  On the other hand, when the employee x is at C, in the mobile wireless communication device 2, the transmission circuit 22 and the acceleration sensor 4 are stopped, and the reception circuit 23 is operating but not responding (step B1). . “No response” of the receiving circuit 23 means a state in which reception of radio waves transmitted from the fixed wireless communication apparatus 1 is accepted (during operation), but a state in which radio waves are not actually received.

  If the employee x moves from C to B, the pyroelectric sensor 3 detects the movement of the employee x and outputs a detection signal indicating that the presence of a person is detected to the communication control microcomputer 10. (Step A2). This is the “reaction” of the pyroelectric sensor 3, which means a state in which the presence of a person can be detected when the presence of a person in B is being detected (in operation).

  When the detection signal is input from the pyroelectric sensor 3, the communication control microcomputer 10 outputs a control signal for starting the operation to the transmission circuit 12 and the reception circuit 13. When the control signal is input, the transmission circuit 12 and the reception circuit 13 operate (step A3). That is, the transmission circuit 12 transmits radio waves via the antenna 14, and the reception circuit 13 is in a state of accepting reception of radio waves transmitted from the mobile wireless communication device 2 (however, since radio waves cannot be received at this time) No response).

  The receiving circuit 23 that is operating receives the radio wave transmitted from the transmitting circuit 12 via the antenna 24 (step B2). This is a “reaction” of the receiving circuit 23, which means a state in which radio waves can be received when the radio waves transmitted from the fixed wireless communication apparatus 1 can be received (during operation). The reception circuit 23 outputs a reception signal indicating that the radio wave has been received to the communication control microcomputer 20.

  When the reception signal is input from the reception circuit 23, the communication control microcomputer 20 outputs a control signal for starting the operation to the transmission circuit 22 and the acceleration sensor 4. When the control signal is input, the transmission circuit 22 and the acceleration sensor 4 operate (step B3). In other words, the transmission circuit 22 transmits radio waves via the antenna 24, and the acceleration sensor 4 enters a state where it is attempting to detect, for example, vibration generated by the movement of the employee x (in operation). Here, it is assumed that the employee x is walking in B, and the acceleration sensor 4 is in a state in which acceleration (vibration caused by walking, etc.) applied to the mobile phone 6 can be detected. This is the “response” of the acceleration sensor 4. That is, the “reaction” of the acceleration sensor 4 refers to a state in which the acceleration can be detected when the acceleration applied to the mobile phone 6 is being detected (in operation). The acceleration sensor 4 outputs a detection signal indicating that acceleration has been detected to the communication control microcomputer 20.

  The receiving circuit 13 in operation receives the radio wave transmitted from the transmitting circuit 22 via the antenna 14 (step A4). This is the “reaction” of the receiving circuit 13, which means a state in which radio waves can be received when the radio waves transmitted from the mobile wireless communication apparatus 2 can be received (during operation). The reception circuit 13 outputs a reception signal indicating that the radio wave has been received to the communication control microcomputer 10.

  The communication control microcomputer 10 receives the input of the reception signal from the reception circuit 13 and controls the transmission circuit 12 to transmit radio waves. On the other hand, the communication control microcomputer 20 also receives the input of the reception signal from the reception circuit 23 and controls the transmission circuit 22 to transmit radio waves. In this way, in B, bidirectional communication is performed between the fixed wireless communication device 1 and the mobile wireless communication device 2.

  Next, in the case of the arrow b in FIG. 2, that is, the operation when the employee x in B moves to A and sits on his / her seat will be described with reference to FIG. 4 is a continuation of FIG.

  When the employee x is in B, in the fixed wireless communication apparatus 1, the transmission circuit 12, the reception circuit 13, and the pyroelectric sensor 3 are all operating, and the reception circuit 13 and the pyroelectric sensor 3 are reacting (step) A11).

  On the other hand, when the employee x is at B, the transmission circuit 22, the reception circuit 23, and the acceleration sensor 4 are all operating in the mobile wireless communication device 2, and the reception circuit 23 and the acceleration sensor 4 are responding (step). B11).

  Here, if the employee x moves from B to A and sits in his / her seat, vibration or the like due to walking disappears. Therefore, the acceleration sensor 4 is in a state where acceleration cannot be detected (step B12). This is “no reaction” of the acceleration sensor 4. That is, it means a state in which acceleration cannot be detected when the acceleration applied to the mobile phone 6 is being detected (during operation). The acceleration sensor 4 stops outputting the detection signal output to the communication control microcomputer 20.

  The communication control microcomputer 20 outputs a control signal for stopping the operation to the transmission circuit 22 and the reception circuit 23 when there is no input of the detection signal from the acceleration sensor 4 for a predetermined time. When the control signal is input, the transmission circuit 22 and the reception circuit 23 stop operating (step B13). That is, the transmission circuit 22 stops the transmission of radio waves, and the reception circuit 23 is in a state where it does not accept reception of radio waves transmitted from the fixed wireless communication apparatus 1. The fixed time can be set by a human (user etc.) operation.

  The receiving circuit 13 in operation cannot receive the radio wave transmitted from the transmitting circuit 22 and becomes unresponsive (step A12). “No response” of the reception circuit 13 refers to a state in which radio waves cannot be received when reception of radio waves transmitted from the mobile wireless communication device 2 is accepted (during operation). The reception circuit 13 stops outputting the reception signal that has been output to the communication control microcomputer 10.

  The communication control microcomputer 10 outputs a control signal for stopping the operation to the transmission circuit 12 when there is no input of a reception signal from the reception circuit 13 for a certain period of time. When the control signal is input, the transmission circuit 12 stops operating (step A13). That is, the transmission circuit 12 stops the transmission of radio waves. The fixed time can be set by a human (user etc.) operation.

  Thus, when the employee x is at his / her seat A in B, the two-way communication between the fixed wireless communication device 1 and the mobile wireless communication device 2 is stopped. Therefore, in the past, bidirectional communication was performed even when the user was present, and wasteful power consumption occurred. However, in this embodiment, power saving can be realized by stopping bidirectional communication.

  Further, the power consumption for the operation of the acceleration sensor and the pyroelectric sensor is less than the power consumption for transmission / reception of wireless communication. Therefore, in this embodiment, further power saving is realized by using an acceleration sensor and a pyroelectric sensor.

  In the description of FIG. 4, the case where the employee x arrives at his / her seat A is described as an example in which the acceleration sensor becomes unresponsive, but the present invention is not limited to this case. If the employee x stops walking (moving) within the range of B, the acceleration sensor becomes non-reactive, and the two-way communication between the fixed wireless communication device 1 and the mobile wireless communication device 2 is stopped by the flow described above. To do. Therefore, power saving can be realized.

  Next, the operation in the case of the arrow c in FIG. 2, that is, when the employee x in his / her seat A moves away from A (but within the range of B) will be described with reference to FIG. 5 is a continuation of FIG.

  When the employee x is in A, in the fixed wireless communication apparatus 1, the transmission circuit 12 is stopped, the reception circuit 13 is operating but not responding, and the pyroelectric sensor 3 is operating and reacting. (Step A21).

  On the other hand, when the employee x is at A, in the mobile wireless communication device 2, the transmission circuit 22 and the reception circuit 23 are stopped, and the acceleration sensor 4 is operating but unresponsive (step B21).

  Here, if the employee x moves away from his / her seat A, vibrations and the like due to walking appear. Therefore, the acceleration sensor 4 is in a state where acceleration can be detected (step B22). The acceleration sensor 4 outputs a detection signal indicating that acceleration has been detected to the communication control microcomputer 20.

  When the detection signal is input from the acceleration sensor 4, the communication control microcomputer 20 outputs a control signal for starting an operation to the transmission circuit 22 and the reception circuit 23. When the control signal is input, the transmission circuit 22 and the reception circuit 23 operate (step B23). That is, the transmission circuit 22 transmits radio waves via the antenna 24, and the reception circuit 23 is in a state of accepting reception of radio waves transmitted from the fixed wireless communication apparatus 1 (however, since radio waves cannot be received at this time) No response).

  The receiving circuit 13 in operation receives the radio wave transmitted from the transmitting circuit 22 via the antenna 14 (step A22). The reception circuit 13 outputs a reception signal indicating that the radio wave has been received to the communication control microcomputer 10.

  When a reception signal is input from the reception circuit 13, the communication control microcomputer 10 outputs a control signal for starting operation to the transmission circuit 22. When the control signal is input, the transmission circuit 12 operates (step A23). That is, the transmission circuit 12 transmits radio waves via the antenna 14.

  The receiving circuit 23 that is operating receives the radio wave transmitted from the transmitting circuit 12 via the antenna 24 (step B24). The reception circuit 23 outputs a reception signal indicating that the radio wave has been received to the communication control microcomputer 20.

  In this way, the communication control microcomputer 20 receives the input of the reception signal from the reception circuit 23 and controls the transmission circuit 22 to transmit radio waves. On the other hand, the communication control microcomputer 10 also receives the input of the reception signal from the reception circuit 13 and controls the transmission circuit 12 to transmit radio waves. Therefore, in B, bidirectional communication is performed between the fixed wireless communication device 1 and the mobile wireless communication device 2.

  Next, in the case of the arrow d in FIG. 2, that is, the operation when the employee x in B moves to C will be described with reference to FIG. 6 is a continuation of FIG.

  When the employee x is in B, in the fixed wireless communication apparatus 1, the transmission circuit 12, the reception circuit 13, and the pyroelectric sensor 3 are all operating, and the reception circuit 13 and the pyroelectric sensor 3 are reacting (step) A31).

  On the other hand, when the employee x is at B, the transmission circuit 22, the reception circuit 23, and the acceleration sensor 4 are all operating in the mobile wireless communication device 2, and the reception circuit 23 and the acceleration sensor 4 are responding (step). B31).

  Here, if the employee x moves from B to C, the employee x is outside the detectable range of the pyroelectric sensor 3. Therefore, the pyroelectric sensor 3 is in a state where the presence of a person cannot be detected (step A32). The pyroelectric sensor 3 stops outputting the detection signal output to the communication control microcomputer 10.

  When there is no input of the detection signal from the pyroelectric sensor 3 for a certain period of time, the communication control microcomputer 10 outputs a control signal for stopping the operation to the transmission circuit 12 and the reception circuit 13, respectively. When the control signal is input, the transmission circuit 12 and the reception circuit 13 stop operating (step A33). That is, the transmission circuit 12 stops the transmission of radio waves, and the reception circuit 13 is in a state where it does not accept reception of radio waves transmitted from the fixed wireless communication apparatus 1. The fixed time can be set by a human (user etc.) operation.

  The receiving circuit 23 in operation cannot receive the radio wave transmitted from the transmitting circuit 12, and becomes unresponsive (step B32). The reception circuit 23 stops outputting the reception signal output to the communication control microcomputer 20.

  The communication control microcomputer 20 outputs a control signal for stopping the operation to the transmission circuit 22 and the acceleration sensor 4 when there is no input of a reception signal from the reception circuit 23 for a predetermined time. When the control signal is input, the transmission circuit 12 and the acceleration sensor 4 stop operating (step B33). That is, the transmission circuit 12 stops transmitting radio waves, and the acceleration sensor 4 is in a state where it does not attempt to detect acceleration. The fixed time can be set by a human (user etc.) operation.

  In this way, when the mobile wireless communication device 2 is out of the range B, the bidirectional communication between the fixed wireless communication device 1 and the mobile wireless communication device 2 is stopped. Conventionally, the bidirectional communication is stopped when the mobile wireless communication device 2 is out of the range of C (wireless communicable range). However, in this embodiment, B (pyroelectric sensor 3) narrower than C is used. ) And the two-way communication is stopped when the mobile wireless communication device 2 is out of the range B. Therefore, in this embodiment, it is not necessary to wait until the mobile wireless communication apparatus 2 is out of the wireless communication range C, and bidirectional communication can be stopped, so that power saving can be realized.

  As mentioned above, although embodiment of this invention was described, it is not limited to the said embodiment, A various deformation | transformation is possible in the range which does not deviate from the summary. For example, the processing operation described in the above embodiment is not only executed in time series, but also configured to be executed in parallel or individually as required by the processing capability of the device that executes the processing. It is also possible. In addition, the wireless communication system described in the above embodiment can be configured to have a logical set configuration of a plurality of devices or to mix functions of each device. Hereinafter, other specific modifications will be described.

[Modification 1]
In the above embodiment, the fixed wireless communication device 1 is built in the PC 5. However, for example, the fixed wireless communication device 1 is configured to include an interface circuit for external connection, and the interface circuit is provided outside the PC 5. You may make it connect with PC5 via. Similarly, the mobile radio communication device 2 is not necessarily built in the mobile phone 6. That is, for example, the mobile wireless communication device 2 may be provided with an interface circuit for external connection, and may be connected to the mobile phone 6 via the interface circuit outside the mobile phone 6.

[Modification 2]
In the above embodiment, the pyroelectric sensor 3 is provided in the PC 5 and the acceleration sensor 4 is provided in the mobile phone 6. However, the pyroelectric sensor 3 is provided in the fixed wireless communication apparatus 1, and the acceleration sensor 4 is provided in the movable type. You may comprise so that it may be provided in the radio | wireless communication apparatus 2. FIG.

[Modification 3]
In the above embodiment, the pyroelectric sensor 3 is used as means (person detection means) for detecting the presence of a person in a range narrower than the range in which wireless communication is possible. However, the present invention is not limited to this. As an alternative to the pyroelectric sensor 3, for example, a camera (imaging means) or the like may be used.

[Modification 4]
In the above embodiment, the example in which the fixed wireless communication device 1 is applied is the PC 5 and the example in which the mobile wireless communication device 2 is applied is the mobile phone 6, but other types may be used. An example to which the fixed wireless communication device 1 is applied may be a copier, a multifunction device, a server device, or the like. In addition, an example to which the mobile wireless communication device 2 is applied may be cards or batches such as employee ID cards, or the mobile wireless communication device 2 alone.

[Modification 5]
In the above embodiment, when the acceleration sensor 4 is not detected in step B13, the communication control microcomputer 20 has been described to perform control (stop control of the mobile wireless communication device 2) to stop transmission / reception of its own device. Other control methods may be used. For example, the communication control microcomputer 10 may perform control to stop transmission / reception of the fixed wireless communication device 1 (stop control of the fixed wireless communication device 1). That is, when there is no detection of the acceleration sensor 4, the communication control microcomputer 20 sends a signal indicating that fact (a signal for performing stop control of the fixed wireless communication apparatus 1) via the receiving circuit 23 to the fixed type. Transmit to the wireless communication device 1. This signal is input to the communication control microcomputer 10 via the receiving circuit 13 in the fixed wireless communication apparatus 1. The communication control microcomputer 10 outputs a control signal for stopping the operation of each circuit to the transmission circuit 12 and the reception circuit 13. Therefore, the transmission circuit 12 stops transmission of radio waves, and the reception circuit 13 stops reception of radio waves. Further, the mobile wireless communication device 2 does not receive radio waves by the control of the fixed wireless communication device 1, and therefore the communication control microcomputer 20 stops transmission / reception of the device itself.

  When the acceleration sensor 4 is not detected, both the stop control of the mobile wireless communication device 2 and the stop control of the fixed wireless communication device 1 may be performed, or only one of them may be performed. You may be made to be.

[Modification 6]
Each operation in the above embodiment can be executed in each wireless communication device by hardware, software, or a combined configuration of both.

  When executing processing by software, a program in which a processing sequence is recorded may be installed and executed in a memory in a computer incorporated in dedicated hardware. Or you may install and run a program in the general purpose computer which can perform various processes.

  For example, the program can be recorded in advance on a hard disk or a ROM (Read Only Memory) as a recording medium. Alternatively, the program is temporarily or permanently stored on a removable recording medium such as a CD-ROM (Compact Disc Read Only Memory), an MO (Magneto optical) disc, a DVD (Digital Versatile Disc), a magnetic disc, or a semiconductor memory. It can be stored (recorded). Such a removable recording medium can be provided as so-called package software.

  The program may be wirelessly transferred from the download site to the computer in addition to being installed on the computer from the removable recording medium as described above. Or you may wire-transfer to a computer via networks, such as LAN (Local Area Network) and the internet. The computer can receive the transferred program and install it on a recording medium such as a built-in hard disk.

  The present invention can be applied to apparatuses and devices, systems, systems, methods, programs, and the like that use bidirectional short-range wireless communication.

1 Fixed wireless communication device (an example of a wireless communication device)
2 Mobile wireless communication device (an example of a wireless communication device)
3 Pyroelectric sensor (an example of person detection means)
4 Acceleration sensor (an example of acceleration detection means)
5 PC
6 Mobile phone 10 Communication control microcomputer (an example of communication control means)
12 Transmission circuit (an example of communication means)
13 Receiver circuit (an example of communication means)
14 Antenna (an example of communication means)
20 Communication control microcomputer (an example of communication control means)
22 Transmission circuit (an example of communication means)
23 Receiving circuit (an example of communication means)
24 Antenna (an example of communication means)

Claims (13)

A device carried by a user, a wireless communication device that performs bidirectional wireless communication with other wireless communication devices,
A communication means for transmitting radio waves to the other wireless communication device while receiving radio waves from the other wireless communication device;
Communication control means for controlling the communication means,
The communication control means includes
When the acceleration generated by the operation of the user carrying the wireless communication device is detected, the communication means is controlled to operate, while the acceleration is not detected, the control to stop the communication means and the control A wireless communication apparatus that performs at least one of control for stopping transmission / reception of radio waves to / from another wireless communication apparatus. The communication control means includes
When the radio wave is no longer received from the other radio communication device when the acceleration is detected, the communication means is controlled to stop transmission of the radio wave to the other radio communication device. The wireless communication device according to claim 1. The communication control means includes
3. The wireless communication device according to claim 1, wherein when the acceleration is detected, if the radio wave is not received from the other wireless communication device, control is performed so that the detection of the acceleration is stopped. 4. .   The wireless communication apparatus according to claim 1, further comprising an acceleration detection unit configured to detect the acceleration. A wireless communication device that is disposed at a predetermined location and performs bidirectional wireless communication with another wireless communication device,
A communication means for transmitting radio waves to the other wireless communication device while receiving radio waves from the other wireless communication device;
Communication control means for controlling the communication means,
The communication control means includes
When the presence of a user carrying the other wireless communication device within a predetermined range in the vicinity of the wireless communication device is detected, the presence of the user is detected while controlling the communication means to operate. If not, the wireless communication apparatus controls the communication means to stop.   6. The wireless communication apparatus according to claim 5, further comprising person detection means for detecting the presence of the user. The communication control means includes
Controlling the communication means to stop the transmission of the radio wave to the other radio communication device when the presence of the user is detected and no radio wave is received from the other radio communication device. The wireless communication apparatus according to claim 5 or 6, characterized in that: The communication control means includes
When the presence of the user is detected and the acceleration generated by the user's operation is not detected in the other wireless communication device, the communication is performed so as to stop the transmission of radio waves to the other wireless communication device. The wireless communication apparatus according to any one of claims 5 to 7, wherein the wireless communication apparatus controls the means.   A wireless communication, wherein the wireless communication device according to any one of claims 1 to 4 and the wireless communication device according to any one of claims 5 to 8 perform bidirectional wireless communication. system. A wireless communication method performed by a wireless communication device that is a device carried by a user and performs two-way wireless communication with another wireless communication device,
The wireless communication device
While receiving radio waves from the other wireless communication device, perform a communication operation to transmit radio waves to the other wireless communication device,
When acceleration generated by an operation of a user carrying the wireless communication device is detected, the communication operation is performed, and when the acceleration is not detected, a control operation for stopping the communication operation and the other wireless communication A wireless communication method comprising performing at least one of control operations for stopping transmission / reception of radio waves to / from an apparatus. A wireless communication method performed by a wireless communication device that is a device disposed at a predetermined location and performs bidirectional wireless communication with another wireless communication device,
The wireless communication device
While receiving radio waves from the other wireless communication device, perform a communication operation to transmit radio waves to the other wireless communication device,
When the presence of a user carrying the other wireless communication device in a predetermined range in the vicinity of the wireless communication device is detected, the communication operation is performed while the presence of the user is not detected, A wireless communication method characterized by stopping a communication operation. A device that is carried by a user and is a program that is executed by a wireless communication device that performs bidirectional wireless communication with another wireless communication device,
In the wireless communication device,
While receiving radio waves from the other wireless communication device, execute a communication process for transmitting radio waves to the other wireless communication device,
When acceleration generated by an action of a user carrying the wireless communication device is detected, the communication process is executed, and when the acceleration is not detected, a control process for stopping the communication process and the other wireless A program for performing at least one of control processes for stopping transmission and reception of radio waves with respect to a communication device. A device that is arranged at a predetermined location, and is a program that is executed by a wireless communication device that performs bidirectional wireless communication with another wireless communication device,
In the wireless communication device,
While receiving radio waves from the other wireless communication device, execute communication processing to transmit radio waves to the other wireless communication device,
When the presence of a user carrying the other wireless communication device in a predetermined range near the wireless communication device is detected, the communication process is executed, while the presence of the user is not detected, A program for stopping the communication processing.

Images