JP5096128B2 - Communication apparatus and program - Google Patents

Description

The present invention relates to communication equipment and programs having a wireless communication function to be used in communication systems that the wireless communication between devices.

  As a conventionally known wireless communication technology, a short-range wireless communication technology such as a Bluetooth (registered trademark) communication technology is known. As a communication system using this type of wireless communication technology, a communication system capable of operating a plurality of devices with a single remote controller by wireless communication is known.

In addition, in this type of communication system, a topology map that describes the spatial arrangement of multiple devices is stored in advance in the memory of the remote controller, and the user operates according to the arrangement of the remote controller's directional keys. Then, it is known that the remote controller refers to the topology map as the direction key is input. According to this communication system, there is an advantage that the device to be operated can be selected only by the user operating the direction key in accordance with the physical arrangement of the devices.
JP 2003-284168 A

  However, the above-described technique has a problem that unless a user performs a key operation, a specific device cannot be selected as a communication destination and communication with the device cannot be established. That is, when a user tries to operate a desired device from a specific communication device (such as a remote controller), first, the user operates a key that is not necessarily good operability prepared for the specific communication device. If the device to be operated is not selected, the desired device cannot be remotely operated, and there are cases where the user is inconvenienced in selecting the device.

The present invention has been made in view of these problems, and an object of the present invention is to provide a technique that does not require a user to perform troublesome key operations.

A first invention made to achieve such an object is a communication device, which is a wireless receiver capable of receiving the radio wave output from an external communication device that outputs a request signal to the surroundings in the form of a radio wave And means for determining whether the request signal received from the external communication device by the wireless reception means is a request signal addressed to the own device based on the motion state of the external communication device relative to the own device when the request signal is output And a process execution means for executing a process corresponding to the received request signal when the determination means determines that the received request signal is a request signal addressed to the own apparatus. Further, the determination means captures the motion state of the external communication device with a camera, and determines that the request signal is a request signal addressed to the own device when the external communication device is displaced toward the own device when the request signal is output. It is characterized by that.

According to the first invention, when the user outputs a request signal, the user requests the execution of processing from the device he owns toward the communication device to the extent that the device he owns is displaced toward the communication device, and requests It is possible to cause the communication device to execute the process.

For example, when the communication device to which the invention is applied is an electrical appliance such as a television receiver or a recorder, and the device that the user has is a remote controller, the user operates the direction button of the remote controller as in the past. Even if it does not, it is possible to operate the electrical appliance to be operated simply by holding the remote controller and moving the remote controller toward the electrical appliance to be operated.

In addition, if the present invention is applied to a mobile phone device, when transmitting photo data, moving image data, etc. from the mobile phone device to another mobile phone device, the user can select a transmission destination by a key operation. It is not necessary, and data can be easily exchanged between mobile phone devices.

  In the conventional mobile phone device, it is not necessary to select a communication destination because data is exchanged by infrared communication. However, since directivity is high in infrared communication, the transmission unit and the reception unit are connected between the mobile phone devices. It is necessary to communicate with the part facing each other. On the other hand, according to the present invention, even if a non-directional and substantially non-directional wireless communication technology is used, it is not necessary for the user to select a communication destination by a key operation, which is very convenient.

According to a second aspect of the invention, the communication device includes probe signal receiving means capable of receiving a sound signal or electromagnetic wave signal having a predetermined frequency as a probe signal output from the external communication device together with the request signal. Further, the determination means frequency-analyzes the probe signal received by the probe signal reception means, calculates a Doppler shift amount of the probe signal output from the external communication device, and outputs a request signal based on the calculated Doppler shift amount. It is characterized in that it is determined whether or not the external communication device is displaced toward its own device.

  The determination means determines that the request signal from the external communication device displaced toward the own device when the request signal is output is a request signal addressed to the own device.

Thus, if such an external communication device based on the Doppler shift amount it is determined whether or not displaced toward the own device, for example, by a camera provided to the communication device by photographing the motion of the external communication device, The above determination can be easily realized with a smaller processing load than when image processing is performed and it is determined whether or not the external communication device is displaced toward the own device.

In other words, a communication device such as a mobile phone device is provided in advance with other means for inputting and outputting electromagnetic waves such as infrared rays and means for inputting and outputting sound (speakers and microphones). According to this communication apparatus, it can be simply configured based on the communication apparatus of the prior art.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a block diagram showing a configuration of a mobile phone 1 according to a first embodiment to which the present invention is applied. The mobile phone 1 of this embodiment includes an operation unit 11, a microphone 13, a display unit 15, a speaker 17, an acceleration sensor 19, a short-range wireless communication unit 21, an infrared communication unit 23, a control unit 25, and the like.

  The operation unit 11 functions as a user-operable user interface for receiving a command from the user, and has a plurality of operation keys for manually inputting a telephone number, a sentence, and the like. A microphone (hereinafter simply referred to as a “microphone”) 13 is a device that converts an input sound into an electric signal, such as a voice emitted by a user or a sound wave as a probe signal emitted by another mobile phone 1. Is converted into an electric signal and input to the control unit 25.

  In addition, the display unit 15 is a color display device and includes a liquid crystal monitor or the like. The display unit 15 displays a transmission screen / incoming screen and various operation screens under the control of the control unit 25. The speaker 17 converts an output target signal input from the control unit 25 into sound waves and outputs the sound to the outside. For example, the call signal received by the control unit 25 from an external mobile phone through the cellular network. Based on the above, the voice collected by the mobile phone of the other party is output.

  The acceleration sensor 19 measures acceleration generated in the mobile phone 1 and inputs the measurement result to the control unit 25. In addition, the short-range wireless communication unit 21 is an omnidirectional wireless communication unit capable of directly communicating with a surrounding communication device in the form of a wireless radio wave, and is not limited to a specific direction, and is a communication device located in all directions. It is configured to be able to communicate. The short-range wireless communication unit 21 is configured by, for example, a well-known Bluetooth (registered trademark) communication module as a non-directional wireless communication unit, and can communicate with a Bluetooth (registered trademark) device located in the vicinity. Is done.

  In addition, the infrared communication unit 23 is directional wireless communication means capable of wireless communication with an external communication device located in a specific direction (infrared emission direction), and uses infrared rays only with the external communication device located in the specific direction. It is configured as a communication module capable of transmitting and receiving information. The control unit 25 is composed of a CPU, a RAM, a flash memory, and the like. The CPU executes various programs stored in the flash memory, thereby controlling each unit in the apparatus and communicating with an external terminal through a cellular network. Communicate to realize a call function and a communication function.

  By the way, data exchange such as photograph data and moving image data recorded on a mobile phone has been conventionally performed between mobile phones, but when trying to realize this data exchange by omnidirectional short-range wireless communication It is necessary for the user to designate a mobile phone as a communication partner. In this case, for example, there is a method of acquiring designation information of a communication partner from the user by causing the user to select a communication partner from a list by a key operation. In this method, however, the user must perform troublesome key operations. The operability is poor.

  Therefore, in the mobile phone 1 of the present embodiment, when the user swings (swings) the mobile phone body, the mobile phone of the swing destination (swing destination) is specified as the communication partner, and the communication partner A function of establishing a connection with a mobile phone and transmitting data to be transmitted designated by the user to the mobile phone of the connection destination is given.

  Below, the process which the control part 25 performs in order to implement | achieve this function is demonstrated. The above functions are realized on the assumption that each mobile phone of the data transmission source and the data reception destination has the same function as the mobile phone 1 of the present embodiment described below.

  FIG. 2A is a flowchart showing a first transmission process executed mainly by the control unit 25. The first transmission process is started by the control unit 25 when a predetermined transmission start operation is performed through the operation unit 11 (in other words, when an operation start command is input from the operation unit 11).

  When the first transmission process shown in FIG. 2A is started, the control unit 25 designates data to be transmitted to the user from user data (photo data, video data, etc.) stored in the built-in flash memory. A data selection screen is displayed on the display unit 15 to inquire about data to be transmitted, and a response is obtained from the user through the operation unit 11 (S110).

  Next, by broadcasting an inquiry packet in the form of radio waves through the short-range wireless communication unit 21 and receiving the response packet, another mobile phone 1 located within a communication range capable of short-range wireless communication is discovered. (S120). Specifically, the mobile phone 1 that has transmitted a response packet to the inquiry packet is found as another mobile phone 1 located within the communication range.

  After the end of S120, a message instructing the user to swing his / her mobile phone 1 toward the data transmission destination mobile phone is displayed on the display screen, and the user swings his / her mobile phone 1 to the user. (S130). The swing will be described later with reference to FIG.

  Next, a sound wave having a strong peak at a predetermined frequency is output as a probe signal through the speaker 17 for a predetermined time, and is measured by the acceleration sensor 19 from the time when the time ΔT is delayed from the probe signal output start time. The obtained acceleration information is periodically acquired from the acceleration sensor 19 at a predetermined period ΔT in total (n + 1) times (n is an arbitrary natural number), and time series data of acceleration is generated (S140). It is assumed that the probe signal output time at this time is (n + 1) · ΔT.

That is, in S140, during the output period of the sound wave (probe signal), the acceleration measurement result is periodically acquired from the acceleration sensor 19 at a predetermined period ΔT, and the time series data of the acceleration is generated. The data generated in S140 is time series data of acceleration scalar values and can be expressed as [a _T0 , a _T1 ,..., A _Tn ]. Here, a _Tk represents the acceleration at time Tk (0 ≦ k ≦ n, k is an integer).

  Next, the control unit 25 determines whether any of the acceleration values obtained in S140 is equal to or greater than a predetermined threshold (S145). If all the acceleration values obtained in S140 are less than the predetermined threshold value (S145: No), the first transmission process is terminated.

  On the other hand, if any one of the accelerations is equal to or greater than a predetermined threshold (S145: Yes), the address response request storing the time series data of the acceleration generated in S140 and the data number corresponding to the time series data. The packet is transmitted through the short-range wireless communication unit 21 in the form of wireless radio waves to all mobile phones located around the device discovered in S120 (S150).

  This data number is randomly determined or determined based on the time, and is changed each time the first transmission process is performed. The reason for transmitting this is that when a response packet corresponding to the address response request packet is received in a later process, the response packet responds to the address response request packet transmitted in the first transmission process of its own device. This is to determine whether or not the packet is transmitted.

  That is, when the transmission of the address response request packet is finished, the control unit 25, as a response packet to the address response request packet, the address of the packet transmission source mobile phone and the data number of the time series data that caused the transmission of the packet Are stored in the short-range wireless communication unit 21 (S160). If the response packet cannot be received within a predetermined time after the transmission of the address response request packet, it is determined No in S160 and the first transmission process is terminated.

  On the other hand, when determining that the response packet has been received through the short-range wireless communication unit 21 (S160: Yes), the control unit 25 stores the data stored in the address response request packet in S150 immediately before the data number indicated by the received response packet. It is determined whether or not the number matches (S170). If the data number received in S160 does not match the data number transmitted in S150 (S170: No), the first transmission process is terminated.

  On the other hand, if the data number received in S160 matches the data number transmitted in S150 (S170: Yes), the mobile phone at the address indicated by the received response packet (the mobile phone from which the response packet was sent) Is determined as the communication partner, a connection request is transmitted to the mobile phone of the address destination, and the connection between the mobile phone of the address destination and the own device is established (S180). Then, the transmission target data specified in S110 is transmitted to the mobile phone 1 with which the connection has been established through the short-range wireless communication unit 21 (S190), and the first transmission process is completed.

  Next, the first reception process executed mainly by the control unit 25 will be described with reference to FIG. The first reception process analyzes the probe signal transmitted to the own device, and the mobile phone 1 that has transmitted the probe signal requests the own device to transmit a response packet for the address response request packet. It is to judge whether or not.

  This first reception process is repeatedly executed by the control unit 25 when the mobile phone 1 is turned on. When the first reception process is started, the control unit first performs a frequency specifying process (S210). Here, the frequency specifying process will be described with reference to FIG. FIG. 3 is a flowchart showing the frequency specifying process executed by the control unit 25.

  In this frequency specifying process, first, information on sound waves input through the microphone 13 is acquired (S2110). Then, the time series data of the sound wave received through the microphone 13 from the time (Tc−ΔT) before the current time Tc to the current time Tc by the predetermined time ΔT is subjected to FFT analysis, and the sound wave received through the microphone 13 during this period is analyzed. A power spectrum is obtained (S2120).

  Then, in a predetermined frequency band (specifically, a frequency band having a predetermined width centered on the probe signal transmission frequency) in the power spectrum obtained in S2120, a peak (maximum point) having a power equal to or higher than a predetermined threshold value. Is searched (S2130), and it is determined whether or not there is at least one peak whose power is equal to or greater than a threshold in the power spectrum (S2140).

If there is at least one peak whose power is equal to or greater than the threshold (S2140: Yes), the measurement is performed by associating the peak frequency and the power information at the peak frequency for each peak whose power is equal to or greater than the threshold in the power spectrum. The data (p _rT , f _rT ) is recorded in the RAM built in the control unit 25 (S2150). Then, the process returns to S2110.

  Here, the variable p represents the power of the corresponding peak, and the variable f represents the peak frequency. The subscript r is a subscript indicating that it is information on the r-th largest peak of power among the peaks whose power is equal to or greater than the threshold, and the subscript T is from time (T−ΔT) to time T. It is a subscript which shows that it is measurement data based on the time series data of the sound wave until.

In the case where R peaks whose power is equal to or greater than the threshold value are found in the power spectrum, in S2150, as the measurement data, values (p _1T , f _1T ), values (p _2T , f _2T ) _,. (P _RT , f _RT ) is recorded in the RAM. Incidentally, since the number of peaks whose power is equal to or greater than the threshold is not determined, the number of data recorded in the RAM as measurement data is not constant.

On the other hand, when there is no peak whose power is greater than or equal to the threshold in the power spectrum (S2140: No), the control unit 25 ends the frequency specifying process without recording anything in the RAM.
FIG. 4 is a diagram illustrating the measurement data group recorded in S2150 of the frequency specifying process. In the present embodiment, when the probe signal is transmitted from the external mobile phone 1, during the probe signal output period, a peak whose power is equal to or higher than the threshold value is continuously detected. The process of .about.S2150 is repeatedly executed, and the measurement data of each time and each peak obtained in that period is recorded in the RAM.

  Specifically, in this embodiment, since the probe signal is continuously output for time (n + 1) · ΔT, the measurement data for the power spectrum can be stored in the RAM for the power spectrum (n + 1). A measurement data storage area is secured in advance.

  When the frequency specifying process is completed, the control unit 25 shifts to an address response request packet reception standby state and receives an address response request packet immediately after the frequency specifying process is completed and before a predetermined time elapses ( (S220: Yes), based on the time series data of the acceleration included in the address response request packet, a deviation amount calculation process is executed (S230).

  On the other hand, when the address response request packet cannot be received within the predetermined time (S220: No), the first reception process is terminated. Note that, when the peak that is equal to or greater than the threshold value cannot be detected continuously for a predetermined time or more in the immediately preceding frequency specifying process, the control unit 25 formally determines No in S220, and the first reception process. Exit. That is, in this case, the reception of the address response request packet is not waited, and formally, it is determined No in S220, and the first reception process ends.

Next, the deviation amount calculation process executed by the control unit 25 when it is determined Yes in S220 will be described. FIG. 5 is a flowchart showing a deviation amount calculation process executed by the control unit 25. When this process is started, the control unit 25 first converts the time series data of acceleration received in S220 into time series data of speed (S2310). The speed V _{Tk at} time T _k is obtained by the following equation.

但し、ｋは０≦ｋ≦ｎを満たす整数である。また、本実施例では、初期速度（プローブ信号出力開始時点での携帯電話の速度）が零であると仮定して、加速度の時系列データを、速度の時系列データに変換している。

However, k is an integer satisfying 0 ≦ k ≦ n. Further, in this embodiment, assuming that the initial speed (the speed of the mobile phone at the start of probe signal output) is zero, the time series data of acceleration is converted into time series data of speed.

Based on the time-series data of the speed at each time calculated in S2310, the theoretical value of the reception frequency of the probe signal that changes due to the Doppler shift is calculated (S2320). This theoretical value assumes that the sound wave (probe signal) source has moved on a straight line connecting the sound wave (probe signal) source and the device, and that the device was stationary at the time of the movement. Calculated assuming. That is, the theoretical value f _Tk of the reception frequency at time T _k is obtained by the following equation.

但し、Ｖｓは音速であり、ｆ₀は、プローブ信号（音波）の送信周波数である。尚、本実施例において、プローブ信号の送信周波数は、固定値に定められているものとする。

Where Vs is the speed of sound and f ₀ is the transmission frequency of the probe signal (sound wave). In this embodiment, it is assumed that the transmission frequency of the probe signal is set to a fixed value.

Also, using the data recorded in S2150 frequency identification process, time-series data of the frequency corresponding to the maximum power, i.e. _{(f 1T0, f 1T1, ···} , f 1Tm) a measured value of the reception frequency of the probe signal (S2330). In this embodiment, since the probe signal output time is set to (n + 1) · ΔT time, the variable m basically takes the value n. It doesn't mean.

Then, the difference between the theoretical value and the actual measurement value of the reception frequency at each time T _k is calculated, and the calculated difference is squared and added together (S2340). The calculation result is expressed as an equation with Z ′ as follows.

但し、変数ｑは、変数ｎ及び変数ｍの内、小さい方の変数値を採る。そして、このＺ´を、ｆ₀の二乗で割って無次元化すると共に、ｑで割ることでｑに依存しない値に変換し（Ｓ２３５０）、ズレ量算出処理を終える。因みに無次元化する理由は、パラメータとして取り扱いがしやすくなるからである。Ｓ２３５０の算出結果をＺとして、式で表すと次のようになる。このＺをズレ量と定義する。

However, the variable q takes the smaller one of the variables n and m. Then, this Z ′ is made dimensionless by dividing it by the square of f ₀ , and converted to a value independent of q by dividing by q (S2350), and the deviation amount calculation processing is finished. Incidentally, the reason for making dimensionless is that it is easy to handle as a parameter. The calculation result of S2350 is expressed as an equation with Z as follows. This Z is defined as the amount of deviation.

ズレ量算出処理を終えると、制御部２５は、Ｓ２３０で算出したズレ量が、所定の閾値以下かを判断する（Ｓ２４０）。ズレ量が所定の閾値以下でないと判断すれば（Ｓ２４０：Ｎｏ）、第一受信処理を終える。一方、ズレ量が所定の閾値以下と判断すれば（Ｓ２４０：Ｙｅｓ）、ズレ量の算出に用いた加速度の時系列データと共に受信した当該時系列データのデータ番号と、自装置のアドレス（短距離無線通信でのノードアドレス）と、を格納したアドレス応答要求パケットに対する応答パケットを生成して、これを短距離無線通信部２１を通じてブロードキャストする（Ｓ２５０）。

When the deviation amount calculation process is completed, the control unit 25 determines whether the deviation amount calculated in S230 is equal to or smaller than a predetermined threshold (S240). If it is determined that the amount of deviation is not less than the predetermined threshold (S240: No), the first reception process is terminated. On the other hand, if it is determined that the amount of deviation is equal to or less than a predetermined threshold (S240: Yes), the data number of the time series data received together with the time series data of the acceleration used to calculate the amount of deviation, and the address of the own device (short distance) (Node address in wireless communication) and a response packet for the address response request packet stored therein is generated and broadcast through the short-range wireless communication unit 21 (S250).

  In addition, when a connection request is received from the external mobile phone 1 through the short-range wireless communication unit 21 within a predetermined time after the transmission of the response packet (S260: Yes), a connection request is made in response to the connection request. A connection with the original mobile phone 1 is established (S270). On the other hand, if the connection request cannot be received within a predetermined time after the transmission of the response packet (S260: No), the first reception process is terminated.

  In addition, when the connection with the mobile phone 1 that is the connection request source is established, the control unit 25 determines whether data has been received within a predetermined time from the communication partner that established the connection in S270 through the short-range wireless communication unit 21. Is determined (S280). If data has not been received (S280: No), the first reception process is terminated. On the other hand, if data has been received (S280: Yes), the received data is stored in the flash memory (S290), and the first reception process is completed.

  The configuration of the mobile phone 1 according to the present embodiment has been described above. However, when the user swings the mobile phone body, the connection with the mobile phone that is the swing destination is established and specified by the user. The function of transmitting the transmitted data to be transmitted to the connection destination mobile phone is that the user operates one mobile phone 1 in a state where there are two or more mobile phones 1 in the communication range of this embodiment. Thus, the first transmission process is executed by the control unit 25, and the other mobile phone 1 executes the first reception process corresponding to the first transmission process.

  The mobile phone 1 that executes the first reception process (hereinafter referred to as “reception terminal”) is transmitted in S140 of the mobile phone 1 that executes the first transmission process (hereinafter referred to as “transmission terminal”). Based on the probe signal, the frequency specifying process is executed in S210, and the address response request packet transmitted in S150 of the transmitting terminal is received in S220, and the deviation amount calculating process ( S230) is executed. The receiving terminal determines that the address response request packet is a request packet addressed to itself only when the amount of deviation is equal to or less than the threshold, and broadcasts the response packet in S250.

  When the transmission terminal receives this response packet in S160, it identifies the swing destination reception terminal to which a connection request is to be made from the address information stored in the response packet, and transmits the connection request to the identified reception terminal. The connection with the receiving terminal is established (S180). Then, the data to be transmitted is transmitted to the receiving terminal with which the connection has been established to respond to the transmission start operation from the user. In the present embodiment, data transmission from the transmission terminal to the reception terminal is realized as described above.

  Here, a method of specifying the mobile phone of the data transmission destination by the swing of the mobile phone body will be described in detail with reference to FIG. First, in the following, the mobile phone 1 used by the user who is going to transmit data is the transmitting terminal, the mobile phone 1 that the user of the transmitting terminal desires as the data transmission destination is the receiving terminal A, and the user of the transmitting terminal is The cellular phone 1 that is not desired as a data transmission destination is called a receiving terminal B. FIG. 6A is a diagram illustrating a state in which the user of the transmission terminal swings the transmission terminal toward the reception terminal A. Incidentally, since the receiving terminal B is located at the back of the page, it is drawn small.

  Furthermore, the swing will be described from another viewpoint with reference to FIG. FIG.6 (b) is the figure which looked at Fig.6 (a) from the top. The user shown in FIG. 6A is omitted in FIG. As shown in FIG. 6B, since the swing is made toward the receiving terminal A, the receiving terminal A receives a sound wave in which the Doppler effect is observed remarkably, and the receiving terminal B has a slight Doppler effect. Sound waves that can only be observed arrive. A value obtained by quantifying this phenomenon is a shift amount calculated by the shift amount calculation process.

  The amount of deviation calculated by the receiving terminal A is smaller than that of the receiving terminal B. This is because the deviation amount is a value obtained by calculating a deviation between the actual measurement value and the theoretical value, and the theoretical value is calculated on the assumption that the transmission terminal moves on a straight line connecting the transmission terminal and the reception terminal. This is because that. That is, the amount of deviation becomes smaller as the transmitting terminal moves along a route closer to the straight line. In this case, naturally, the moving route of the receiving terminal A is closer to the straight line than that of B. Therefore, the amount of deviation calculated by the receiving terminal A is smaller than that of the receiving terminal B.

  Accordingly, it is possible to set a threshold for the amount of deviation that is determined to be Yes in S240 of the first reception process executed by the receiving terminal A and No in S240 of the first reception process executed by the receiving terminal B. is there. In addition, by doing so, the transmitting terminal transmits data to the receiving terminal desired by the user, and the object can be achieved.

  In S2330, the time-series data of the frequency corresponding to the maximum power is read out from the data recorded in S2150 included in the frequency specifying process as an actual measurement value of the reception frequency of the probe signal subjected to the Doppler shift. The cause that the read frequency changes with the passage of time is assumed to be the Doppler effect, and the subsequent processing is performed.

  However, the data read here does not always follow the output of the sound wave having the same frequency component received as the probe signal from the transmitting terminal. In other words, when chasing a frequency that changes every moment corresponding to the maximum power, it is not always guaranteed that the cause of the change is due to the Doppler effect and not due to noise. Therefore, in order to ensure this, the present embodiment is devised as follows.

  That is, in this embodiment, the transmission frequency of the probe signal is set to the frequency of the ultrasonic region, and in S2130, a peak having a power equal to or higher than a predetermined threshold in the frequency band corresponding to the probe signal in the power spectrum obtained in S2120. Search and identify its peak frequency. In this way, if the probe signal is an ultrasonic wave, the output sound of the probe signal is not perceived by humans, so the probe signal is transmitted from the transmitting terminal with a high output sufficient to ensure a sufficient S / N ratio. Even if it outputs, it does not give a human discomfort. Therefore, according to the present embodiment, the probe signal can be output at a high output, and erroneous determination due to noise can be suppressed as much as possible.

  In the present embodiment (second embodiment), the mobile phone that the user desires as a data transmission destination is specified based on the positional relationship between the mobile phones 1, and the mobile phone owned by the user and the user desires. A data transmission destination mobile phone is connected, and the transmission target data designated by the user is transmitted to the specified mobile phone. Specifically, in this embodiment, the transmission terminal instructs the user of the own device to bring the mobile phone desired as the data transmission destination closer. On the other hand, the receiving terminal specifies a transmitting terminal whose distance from the own device to the transmitting terminal is equal to or less than a predetermined threshold as a communication partner.

  Below, the 2nd transmission process and the 2nd reception process which the control part 25 for implement | achieving this function are demonstrated. The above functions are realized on the assumption that each mobile phone of the data transmission source and the data reception destination has the same function as the mobile phone 1 of the present embodiment described below. Further, since the hardware configuration of the mobile phone 1 of the present embodiment is the same as that of the first embodiment, the description relating to the hardware configuration of the mobile phone 1 is omitted here.

  FIG. 7A is a flowchart showing the second transmission process executed by the control unit 25. When the second transmission process shown in FIG. 7A is started, the control unit 25 designates data to be transmitted to the user from user data (photo data, moving image data, etc.) stored in the built-in flash memory. A data selection screen is displayed on the display unit 15 to inquire about data to be transmitted, and a response is obtained from the user through the operation unit 11 (S310).

  Next, an inquiry packet is broadcast in the form of radio waves through the short-range wireless communication unit 21 and a response packet is received to find another mobile phone 1 located in the communication area (S320). Specifically, the mobile phone 1 that has transmitted a response packet to the inquiry packet is found as another mobile phone 1 located within the communication range.

  Then, a message for instructing the mobile phone 1 of the data transmission destination to approach the mobile phone 1 is displayed on the display unit 15, and the user's mobile phone 1 is made the mobile phone of the data transmission destination to the user. It is urged to approach (S330).

  Next, a sound wave having a strong peak at a predetermined frequency is output as a probe signal through the speaker 17 for a predetermined time, and during this sound wave output period, an address response request packet is found through the short-range wireless communication unit 21 in S320. It transmits to each mobile phone 1 (S340). Note that the frequency of the sound wave (the transmission frequency of the probe signal) is randomly changed within a predetermined frequency band every time the process of S340 is executed. However, it is assumed that the signal intensity (power) at the time of outputting sound waves is fixed to a constant value. In this way, the power is set to a fixed value at the receiving terminal, and whether or not the address response request packet transmitted from the transmitting terminal is a packet addressed to its own device This is to make a determination from the signal strength, and in particular, to enable the above determination to be performed without exchanging power information between the transmitting terminal and the receiving terminal.

  When the transmission of the sound wave is finished, the control unit 25, as a response packet for the address response request packet for a predetermined time, information on the address of the packet transmission source mobile phone and the peak frequency of the sound wave that caused the packet to be transmitted Is received.

  Then, within a predetermined time, as a response packet to the address response request packet, a packet in which the address of the packet transmission source mobile phone and the information of the peak frequency of the sound wave that caused the transmission of the packet is stored is a short distance. It is determined whether it is received through the wireless communication unit 21 (S360). If the response packet cannot be received within a predetermined time after the transmission of the address response request packet, it is determined No in S360 and the second transmission process is terminated.

  On the other hand, if it is determined that the response packet has been received through the short-range wireless communication unit 21 (S360: Yes), the control unit 25 transmits the received response packet with the peak frequency written in the response packet and the transmission in S340. It is determined whether the difference from the peak frequency of the sound wave is equal to or less than a predetermined threshold value (S370). Then, for all received response packets, if the difference between the peak frequency described in the packet and the peak frequency transmitted in S340 is not less than or equal to a predetermined threshold (S370: No), the second transmission process is terminated.

  On the other hand, for any one of the received response packets, if the difference between the peak frequency written in the packet and the peak frequency of the sound wave transmitted in S340 is equal to or smaller than a predetermined threshold (S370). : Yes), which is the received response packet, and the address indicated by each response packet in which the difference between the peak frequency described in the packet and the peak frequency of the sound wave transmitted in S340 is less than or equal to the threshold (response packet transmission source) ) Is determined as the communication partner, a connection request is transmitted to the mobile phone of the address destination, and the connection between the mobile phone of the address destination and the own device is established (S380). Then, the transmission target data designated in S310 is transmitted through the short-range wireless communication unit 21 to the mobile phone 1 with which the connection has been established (S390), and the second transmission process is completed.

  Next, a second reception process executed mainly by the control unit 25 will be described with reference to FIG. FIG. 7B is a flowchart showing the second reception process repeatedly executed by the control unit 25. In the second reception process, the probe signal transmitted to the own device is analyzed, and the mobile phone 1 that has transmitted the probe signal transmits a response packet to the address response request packet to the own device. This is to determine whether it is requested.

  When the second reception process is started, the control unit 25 waits until an address response request packet is received through the short-range wireless communication unit 21 (S410). When the address response request packet is received, the frequency specifying process is performed on the received signal of the sound wave received through the microphone 13 (S420). Since the frequency specifying process is the same as that described in the first embodiment, it will not be described here.

Upon completion of frequency specific processing, time series data of the maximum peak acquired in _{S420 {p 1T0, p 1T1,} ···, p 1Tm} Among whether power is how many are more than a predetermined threshold value And determine whether the number is equal to or greater than a predetermined number (S440). If it is determined that the number is not equal to or greater than the predetermined number (S440: No), the second reception process is terminated.

On the other hand, if it is determined that the number is the number than the predetermined (S440: Yes), the time series data of the maximum peak acquired in _{S420 {f 1T0, f 1T1,} ···, f 1Tm} each peak indicated The average value and standard deviation of the frequency are calculated (S443). Then, it is determined whether or not the standard deviation calculated in S443 is less than or equal to a predetermined threshold (S447), and if the standard deviation calculated in S443 is not less than or equal to the predetermined threshold (S447: No), the second reception process Finish.

  The significance of the processing in S447 will be described. A large standard deviation means that the frequency corresponding to the maximum power has greatly fluctuated. However, the peak frequency (transmission frequency) of the sound wave transmitted from the transmission terminal is constant. That is, if the frequency fluctuates greatly, there is a high possibility that the reception of the sound wave has failed due to noise or the like, or that the sound wave has not been transmitted originally by the second transmission process. Therefore, in this embodiment, the second reception process is terminated in this case.

  On the other hand, if it is determined that the standard deviation calculated in S443 is equal to or less than the predetermined threshold (S447: Yes), the average value of the frequency calculated in S443 is automatically used as information on the peak frequency that caused the packet transmission. A response packet for the address response request packet stored together with the device address is generated and broadcast through the short-range wireless communication unit 21 (S450).

  In addition, when a connection request is received from the external mobile phone 1 through the short-range wireless communication unit 21 within a predetermined time after the transmission of the response packet (S460: Yes), the connection request source mobile phone is returned in response to the connection request. A connection with the telephone 1 is established (S470). On the other hand, when the connection request cannot be received within a predetermined time after the transmission of the response packet (S460: No), the second reception process is terminated.

  In addition, when the connection with the connection request source mobile phone 1 is established, the control unit 25 determines whether data has been received within a predetermined time from the communication partner that established the connection in S470 through the short-range wireless communication unit 21. Is determined (S480). If data has not been received (S480: No), the second reception process is terminated. On the other hand, if data has been received (S480: Yes), the received data is stored in the flash memory (S490), and the second reception process is completed.

  As described above, the configuration of the mobile phone 1 according to the present embodiment has been described. However, when the user brings the mobile phone body close to another mobile phone, the connection with the other mobile phone brought close to the mobile phone is established. The function of transmitting the designated data to be transmitted to the mobile phone of the connection destination is that the user can use one mobile phone 1 in a state where there are two or more mobile phones 1 in the communication range. By performing the operation, the second transmission process is executed by the control unit 25, and corresponding to the second transmission process, the other mobile phone 1 executes the second reception process.

  The receiving terminal executes the frequency specifying process in S420 based on the probe signal transmitted in S340 of the transmitting terminal, and based on the information on the reception intensity (power) of the probe signal obtained by this frequency specifying process. Then, it is estimated whether or not the transmitting terminal is within a predetermined range based on the own device. Then, only when the number of times that the power exceeds the threshold is greater than or equal to the threshold during the output period of the probe signal, it is estimated that the transmitting terminal is within a predetermined range based on the own device, and the address response request packet Is addressed to its own device, and a response packet is broadcast in S450.

  When the transmission terminal receives this response packet in S360, the transmission terminal identifies the mobile phone that should make a connection request from the address information stored in the response packet, transmits the connection request to the specified mobile phone, and receives the response A connection with the terminal is established (S380). Then, the data to be transmitted is transmitted to the receiving terminal with which the connection has been established to respond to the transmission start operation from the user. In the present embodiment, data transmission from the transmission terminal to the reception terminal is realized as described above.

  As described at the beginning of the present embodiment, the present embodiment estimates whether or not the receiving terminal exists within a predetermined range based on the own device, and within the predetermined range based on the own device. The transmitting terminal located in is identified as a communication partner. Further, the estimation of the distance is performed in S440 using the property that the power becomes smaller in proportion to the square of the distance.

  In other words, the receiving terminal receives the sound wave having a predetermined power peak transmitted in S340 of the second transmission process from the transmitting terminal, and acquires the power of the acquired sound wave and the predetermined power at the time of transmission. Based on the above, the approximate distance from the own device to the transmitting terminal is estimated. The receiving terminal of this embodiment determines whether or not the transmitting terminal exists within a predetermined distance based on such a principle.

  Therefore, according to the present embodiment, when the user of the mobile phone 1 wants to transmit data, the mobile phone 1 possessed by the user is brought close to the mobile phone of the data transmission destination, Data can be transmitted, and data can be easily transmitted to a desired mobile phone without selecting a transmission destination from a list as in the prior art. Therefore, according to the present embodiment, the operability during data exchange is improved.

  In the present embodiment, unlike the first and second embodiments described above, the communication partner is specified using infrared communication. In other words, in this embodiment, the communication partner to which the user intends to transmit data is identified using highly directional infrared communication, and then the identified communication partner is identified using non-directional short-range wireless communication. By communicating, it is possible for the user to transmit data to a specific mobile phone 1 without selecting a communication partner from the list, and the infrared communication unit is always set as the communication partner during data transmission. Eliminates the inconvenience of traditional infrared communications that must be directed.

  Below, the process which the control part 25 performs in order to implement | achieve this function is demonstrated. The above functions are realized on the assumption that each mobile phone of the data transmission source and the data reception destination has the same function as the mobile phone 1 of the present embodiment described below. Further, since the hardware configuration of the mobile phone 1 of the present embodiment is the same as that of the first embodiment, the description relating to the hardware configuration of the mobile phone 1 is omitted here.

  FIG. 8A is a flowchart showing a third transmission process executed mainly by the control unit 25. The third transmission process is started by the control unit 25 when a predetermined transmission start operation is performed through the operation unit 11.

  When the third transmission process shown in FIG. 8A is started, the control unit 25 designates data to be transmitted from the user data (photo data, moving image data, etc.) stored in the built-in flash memory to the user. A data selection screen is displayed on the display unit 15 to inquire about data to be transmitted, and a response is obtained from the user through the operation unit 11 (S510).

  Next, an inquiry packet is broadcast in the form of a radio wave through the short-range wireless communication unit 21 and a response packet is received to find another mobile phone 1 located in the communication area (S520). Specifically, the mobile phone 1 that has transmitted a response packet to the inquiry packet is found as another mobile phone 1 located within the communication range.

  After the end of S520, the infrared communication unit 23 is directed toward the data transmission destination mobile phone, and a message instructing to operate the operation key corresponding to the infrared transmission is displayed on the display screen. The user is prompted to direct the infrared communication unit 23 toward the destination mobile phone to instruct infrared transmission (S530). Then, it is determined whether an operation key corresponding to infrared transmission is operated within a predetermined time (S535). If it is determined that the operation key corresponding to the transmission of infrared rays has not been operated within a predetermined time (S535: No), the third transmission process is terminated.

  On the other hand, if it is determined that an operation key corresponding to infrared transmission has been operated within a predetermined time (S535: Yes), an address response request signal is transmitted in the form of infrared through the infrared communication unit 23 (S540). After that, the control unit 25 receives information on an address (for example, Bluetooth (registered trademark) address) necessary for communication through the short-range wireless communication unit 21 through the infrared communication unit 23 in the form of infrared rays within a predetermined time. It is determined whether or not (S560). If the address information cannot be received within the predetermined time, it is determined No in S560 and the third transmission process is terminated.

  On the other hand, if it is determined that the address information has been received within the predetermined time through the infrared communication unit 23 (S560: Yes), the address received in the infrared form matches one of the mobile phone addresses found in S520. Judgment is made (S570). When it is determined that the address received in the form of infrared rays does not match any of the addresses found in S520 (S570: No), the third transmission process is terminated.

  If it is determined that the address received in the form of infrared rays matches any of the addresses found in S520 (S570: Yes), the control unit 25 determines the received mobile phone as the communication partner. Then, the connection request is transmitted to the mobile phone of the address destination through the short-range wireless communication unit 21, and the connection between the mobile phone of the address destination and the own device is established (S580). Then, the transmission target data designated in S510 is transmitted to the mobile phone 1 with which the connection has been established through the short-range wireless communication unit 21 (S590), and the third transmission process is completed.

  Next, with reference to FIG. 8B, a third reception process that is repeatedly executed mainly by the control unit 25 will be described. In the third reception process, in response to an address response request signal in the form of infrared rays transmitted to the own device, the address for short-range wireless communication of the own device is returned.

  When the third reception process is started, the control unit 25 stands by until an address response request signal is received via the infrared communication unit 23 (S610). When the address response request signal is received, the address for the short-range wireless communication of the own device is transmitted in the form of infrared rays to the mobile phone 1 that is the address response request signal transmission source through the infrared communication unit 23 (S650).

  Then, when a connection request is received from the external mobile phone 1 through the short-range wireless communication unit 21 within a predetermined time from the processing of S650 (S660: Yes), in response to the connection request, the connection request source mobile phone 1 and Is established through the short-range wireless communication unit 21 (S670). On the other hand, if the connection request cannot be received within a predetermined time from the process of S650 (S660: No), the third reception process is terminated.

  In addition, when the connection with the connection request source mobile phone 1 is established, the control unit 25 determines whether data has been received within a predetermined time from the communication partner that established the connection in S670 through the short-range wireless communication unit 21. Is determined (S680). If data has not been received (S680: No), the third reception process ends. On the other hand, if data has been received (S680: Yes), the received data is stored in the flash memory (S690), and the third reception process ends.

  Although the configuration of the mobile phone 1 according to the present embodiment has been described above, when the user transmits infrared rays toward the other mobile phone, the connection with the mobile phone that received the mobile phone is short-range wireless. The function that is established through the communication unit 21 and the transmission target data designated by the user is transmitted to the mobile phone of the connection destination through the short-range wireless communication unit 21 is that the mobile phone 1 of this embodiment is within the communication range. When the user operates one mobile phone 1 in a state where there are two or more, the third transmission process is executed by the control unit 25, and the other mobile phone 1 corresponds to the third transmission process. This is realized by executing three reception processes.

  When the receiving terminal receives an address response request signal transmitted in the form of infrared from the transmitting terminal through the infrared communication unit 23 in S610 by the processing in S540 executed by the transmitting terminal, the receiving terminal obtains the address of the own device in S650. A reply is sent in the form of infrared rays through the infrared communication unit 23.

  As a response signal to the address response request signal, the transmitting terminal receives an address for short-range wireless communication in S560 through the infrared communication unit 23 by infrared communication, and identifies the receiving terminal that should make a connection request from the received address information. Then, a connection request is transmitted to the identified receiving terminal through the short-range wireless communication unit 21 to establish a connection with the receiving terminal by the short-range wireless communication unit 21 (S580). Then, data to be transmitted is transmitted to the receiving terminal with which the connection has been established by non-directional short-range wireless communication in response to a transmission start operation from the user.

In the present embodiment, data transmission from the transmission terminal to the reception terminal is realized as described above.
As described at the beginning, this embodiment uses a highly directional infrared communication to identify a communication partner to which a user is going to transmit data, and then uses a non-directional short-range wireless communication. It is characterized by data communication with the specified communication partner.

  This point will be described in detail. The strong directivity is convenient for specifying a communication partner. However, if the communicating terminal is pointed in a direction incapable of communication during data transmission / reception, the transmission / reception fails. Moreover, the communication speed of infrared transmission / reception is generally slower than the speed of short-range wireless communication using radio waves such as Bluetooth (registered trademark). Therefore, in the data transmission / reception by infrared communication, the user must wait for the transmission / reception to end while facing the transmission terminal and the reception terminal, which is inconvenient.

  On the other hand, as in this embodiment, if infrared communication is used only for specifying a communication partner and data transmission / reception is performed by omnidirectional short-range wireless communication, a terminal can be connected during data transmission / reception, There is no need for the communication partner, and data can be transmitted and received at high speed, so that the inconvenience described above can be eliminated.

  In the process of S650, it seems that it is not guaranteed that infrared rays can be returned to the transmission terminal that executes the third transmission process. However, if processing from S610 to S650 is performed in a short time, it is considered that the user of the transmitting terminal continues to maintain the state in which the infrared communication unit 23 between the transmitting terminal and the receiving terminal can communicate with each other in S540. Therefore, there is a low possibility that the data is erroneously transmitted to another communication terminal.

  In this embodiment, the cellular phone 1 is used as a remote controller (hereinafter referred to as a remote controller) for operating a household electrical appliance (hereinafter referred to as a home appliance) 100, and communication establishment with the home appliance 100 that the user desires to operate is established. The opportunity is to be realized by swinging. As home appliances to be operated, for example, a television receiver or an air conditioner can be cited.

  Here, the configuration of the home appliance 100 and the communication system formed by the home appliance 100 and the mobile phone 1 will be described with reference to FIG. The home appliance 100 includes a microphone 113, a short-range wireless communication unit 121, and a control unit 125. The microphone 113 is configured to be able to acquire a sound wave as a probe signal emitted from the mobile phone 1, and the short-range wireless communication unit 121 is based on the same short-range wireless communication standard as the short-range wireless communication unit 21 included in the mobile phone 1. It is configured to be able to communicate.

  The control unit 125 includes a CPU, a RAM, a flash memory, and the like. The CPU executes various programs stored in the flash memory to centrally control each unit in the apparatus.

  Subsequently, a process executed by the mobile phone 1 according to the present embodiment will be described. FIG. 10A is a flowchart showing a fourth transmission process executed mainly by the control unit 25 of the mobile phone 1. In addition, the mobile phone 1 of the present embodiment periodically searches for surrounding communication terminals that can communicate through the short-range wireless communication unit 21 separately from the fourth transmission process, and uses the same method as in S120 to determine the communication range. It is assumed that a communication terminal existing in the network is found.

  That is, the fourth transmission process is executed by the control unit 25 in a state where the mobile phone 1 has found a communication terminal that exists within the short-range wireless communication range. Specifically, the fourth transmission process is started by the control unit 25 when an acceleration equal to or higher than a predetermined threshold is detected by the acceleration sensor 19 in a state where a communication terminal is found.

When this processing is started, the control unit 25 uses a sound wave having a strong peak at a predetermined frequency as a probe signal through the speaker 17 for a predetermined time in the same manner as the processing in S140 described in the first embodiment. In addition to outputting, the information of acceleration measured by the acceleration sensor 19 from the time when the time ΔT is delayed from the output start time of the probe signal is periodically (n + 1) times (n is an arbitrary natural number) periodically with a predetermined period ΔT. The time series data [a _T0 , a _T1 ,..., A _Tn ] obtained from the acceleration sensor 19 are generated (S720).

  Thereafter, similarly to the processing at S150, an address response request packet storing the time series data of the acceleration generated at S720 and the data number corresponding to the time series data is transmitted in advance through the short-range wireless communication unit 21. The message is transmitted to all the found mobile phones (S730).

  When the transmission of the address response request packet is completed in this way, the control unit 25, as a response packet to the address response request packet, the data number of the time series data that caused the response packet to be transmitted and the address of the packet transmission source Is received through the short-range wireless communication unit 21 (S740). If the response packet cannot be received within a predetermined time after the transmission of the address response request packet, it is determined No in S740 and the fourth transmission process is terminated.

  On the other hand, when determining that the response packet has been received through the short-range wireless communication unit 21 (S740: Yes), the control unit 25 uses the data number indicated in the received response packet as the data number stored in the address response request packet in S730. It is determined whether or not they match (S745). If the data number received in S740 and the data number transmitted in S730 do not match (S745: No), the fourth transmission process ends.

  On the other hand, if the data number received in S740 matches the data number transmitted in S730 (S745: Yes), the received addressed home appliance 100 (that is, the response packet transmission source home appliance 100) communicates. It determines to the other party, transmits a connection request to the household appliance 100 of the said address destination, and establishes the connection with the household appliance of the said address destination, and an own apparatus (S750). And the operation screen of the household appliance which established the connection is displayed on the display part 15 (S760).

  Further, after the operation screen is displayed, it is determined whether or not an operation end operation (in other words, an operation for closing the operation screen) has been performed through the operation unit 11 (S770). If the operation end operation has not been performed through the operation unit 11 (S770: No), it is determined whether operation information for the home appliance 100 with which the connection has been established has been input through the operation unit 11. (S775).

  When it is determined that the operation information for the home appliance 100 is input via the operation unit 11 (S775: Yes), the control unit 25 establishes a connection via the short-range wireless communication unit 21 for the operation information. (S780), and the process returns to S770. If it is determined that the operation information for the home appliance 100 is not input via the operation unit 11 (S775: No), the process returns to S770 without executing the process of S780.

  If the operation end operation is performed through the operation unit 11 (S770: Yes), a connection release request is transmitted to the home appliance 100 with which the connection is established through the short-range wireless communication unit 21, and the home appliance The connection with 100 is released (S790). Thereafter, the fourth transmission process is terminated.

  Next, a fourth reception process executed mainly by the control unit 125 of the home appliance 100 will be described with reference to FIG. In the fourth reception process, the probe signal transmitted to the own device is analyzed, and the cellular phone 1 that has transmitted the probe signal requests the own device to transmit a response packet for the address response request packet. This is to determine whether or not

  This fourth reception process is repeatedly executed by the control unit 125 in each home appliance 100. When the fourth reception process is started, the control unit 125 performs the frequency specifying process shown in FIG. 3 based on information input through the microphone 113 (S810).

  In addition, although the content of the frequency specific process shown in FIG. 3 was demonstrated in 1st Example, in S810, since the main body which performs a frequency specific process is the control part 125 of the household appliance 100, according to it, in S810 In the description of the frequency specifying process (first embodiment) described above, the frequency specifying process to be executed is replaced with the microphone 13 as the microphone 113, and the RAM built in the control unit 25 is replaced with the RAM built in the control unit 125. It should be read and interpreted.

  When the frequency specifying process is completed in this way, the control unit 125 shifts to an address response request packet reception standby state, and receives the address response request packet immediately after the frequency specifying process is completed and until a predetermined time elapses. Then (S820: Yes), based on the acceleration time-series data included in the address response request packet, the deviation amount calculation process shown in FIG. 5 is executed (S830). Since the deviation amount calculation processing has been described in the first embodiment, it will not be described here.

  On the other hand, if the address response request packet cannot be received within the predetermined time (S820: No), the fourth reception process is terminated. However, when the peak exceeding the threshold value cannot be detected continuously for a predetermined time or more in the immediately preceding frequency specifying process, the control unit 25 formally determines No in S820, and the first reception process Exit.

  When the deviation amount calculation process is completed, the control unit 125 determines whether the deviation amount calculated in S830 is equal to or smaller than a predetermined threshold (S840). If it is determined that the amount of deviation is not less than the predetermined threshold (S840: No), the fourth reception process is terminated. On the other hand, if it is determined that the amount of deviation is equal to or less than the predetermined threshold (S840: Yes), the address of the own device, the data number of the time series data received together with the time series data of the acceleration used to calculate the amount of deviation are stored. A response packet for the address response request packet is generated and broadcast through the short-range wireless communication unit 21 (S850).

  In addition, if a connection request is received from the external mobile phone 1 through the short-range wireless communication unit 21 within a predetermined time after the response packet is transmitted (S860: Yes), the connection request source mobile phone is responded to in response to the connection request. A connection with the telephone 1 is established (S870). On the other hand, if the connection request cannot be received within a predetermined time after the transmission of the response packet (S860: No), the fourth reception process ends.

  In addition, after establishing a connection with the mobile phone 1 that is the connection request source, the control unit 125 of the home appliance 100 performs a process of turning on the main function, and changes its own device from the standby state to the active state. (S875), the process proceeds to S880. For example, when the home appliance 100 is a television receiver, the main function of the television receiver is turned on by executing a process of turning on the monitor. However, if the main function has already been turned on at this time, the process proceeds to S880 without executing any processing in S875.

  After shifting to S880, the control unit 125 determines whether a connection release request is received via the short-range wireless communication unit 121. If it is determined that a connection release request has not been received (S880: No), the control unit 125 determines whether operation information for the device itself has been received via the short-range wireless communication unit 121 (S885). . When the operation information is received (S885: Yes), based on the received operation information, processing corresponding to the operation performed by the user through the operation screen is executed on the mobile phone 1 (S890), S880. Return to. On the other hand, when the operation information has not been received (S885: No), the process returns to S880 without executing S890.

If it is determined that a connection release request has been received (S880: Yes), the connection between the mobile phone 1 that is the connection release request transmission source and the device itself is released (S895), and the fourth reception process is terminated.
As described above, according to the communication system of the present embodiment, the swing destination home appliance 100 can be operated using the mobile phone 1 as a remote controller to the extent that the mobile phone 1 swings toward the home appliance 100. it can. Therefore, even in a room where a plurality of home appliances 100 exist, the user does not have to pick up the operation target home appliance 100 by key operation of the mobile phone 1 or search for a remote control dedicated to the operation target home appliance. The desired home appliance 100 can be easily operated through the mobile phone 1 at hand, and the operability for the home appliance 100 is improved according to the communication system of the present embodiment.

  The present embodiment is similar to the second embodiment, and estimates the distance between the transmitting terminal and the receiving terminal, and performs processing that is regarded as a communication partner if it is equal to or less than a predetermined distance. The difference from the second embodiment is that in this embodiment, the transmitting terminal estimates the distance.

  Below, the process which the control part 25 for implement | achieving this function is demonstrated. The above functions are realized on the assumption that each mobile phone of the data transmission source and the data reception destination has the same function as the mobile phone 1 of the present embodiment described below.

  FIG. 11A is a flowchart showing a fifth transmission process executed mainly by the control unit 25. The fifth transmission process is started by the control unit 25 when a predetermined transmission start operation is performed through the operation unit 11.

  When the fifth transmission process shown in FIG. 11A is started, the control unit 25 designates data to be transmitted to the user from user data (photo data, moving image data, etc.) stored in the built-in flash memory. A data selection screen is displayed on the display unit 15 to inquire about data to be transmitted, and a response is obtained from the user through the operation unit 11 (S910).

  Next, an inquiry packet is broadcast in the form of radio waves through the short-range wireless communication unit 21 and a response packet is received to find another mobile phone 1 located in the communication area (S920). Specifically, the mobile phone 1 that has transmitted a response packet to the inquiry packet is found as another mobile phone 1 located within the communication range.

  If no mobile phone is found (S923: No), the fifth transmission process is terminated. On the other hand, if at least one mobile phone is found (S923: Yes), a connection request is transmitted to each found mobile phone 1 to establish a connection with each mobile phone 1 (S925).

  When the process in S925 is completed, the control unit 25 assigns a unique frequency as the probe signal transmission frequency to each mobile phone 1 connected in S925 (S930). Then, the frequency information allocated in S930 is transmitted to each mobile phone 1 connected in S925 through the short-range wireless communication unit 21 (S935).

  Also, after the end of S935, a message instructing the mobile phone 1 of the data transmission destination to bring the mobile phone closer to the mobile phone 1 is displayed on the display screen, and the user sends the mobile phone to the data transmission destination. (S940). Then, the frequency specifying process is performed immediately after S940 (S945). Since the frequency specifying process is the same as that described in the first embodiment, it will not be described here.

  Then, based on the data acquired in the immediately preceding S945, the connection with the mobile phone 1 other than the mobile phone 1 to which the frequency at which power equal to or greater than the threshold is obtained a predetermined number of times or more is released (S950). Then, it is determined whether any of the cellular phones 1 that established the connection in S925 and the connection is still continued (S960). Then, if the connection with any of the mobile phones 1 is not continued (S960: No), the fifth transmission process is finished.

  On the other hand, if the connection with any one of the mobile phones 1 is continued (S960: Yes), the control unit 25 identifies the mobile phone 1 that is continuing the connection through the short-range wireless communication unit 21 in S910. Data is transmitted (S990), and the fifth transmission process is completed.

  Next, the fifth reception process executed mainly by the control unit 25 will be described with reference to FIG. When starting the fifth reception process, the control unit 25 waits until a connection with another mobile phone 1 is established via the short-range wireless communication unit 21 (S1010). When the connection is established, it is determined whether frequency information has been received from the other mobile phone 1 with which the connection has been established via the short-range wireless communication unit 21 (S1020). When it is determined that the frequency information is not received from the connection destination via the short-range wireless communication unit 21 (S1020: No), it is determined whether the connection with the mobile phone 1 is released (S1030). . If the connection is not released (S1030: No), the process returns to S1020. That is, it waits until it is judged Yes in either S1020 or S1030.

  If it is determined that the connection has been released (S1030: Yes), the fifth reception process ends. On the other hand, if it is determined that the frequency information is received from the other connected mobile phone 1 via the short-range wireless communication unit 21 (S1020: Yes), the received frequency information is used to set the frequency information. A sound wave having a strong peak is transmitted as a probe signal through the microphone 13 (S1040).

Next, it is determined whether the connection has been released (S1050). If it is determined that the connection has been released (S1050: Yes), the fifth reception process ends.
On the other hand, if it is determined that the connection has not been released (S1050: No), the control unit 25 has received data from the communication partner established in S1010 through the short-range wireless communication unit 21 within a predetermined time. It is determined whether or not (S1060). If it is determined that no data has been received (S1060: No), the fifth reception process ends. On the other hand, if it is determined that data has been received (S1060: Yes), the received data is stored in the flash memory (S1070), and the fifth reception process is terminated.

  In the present embodiment, data transmission from the transmission terminal to the reception terminal is realized as described above.

  The present embodiment is similar to the second embodiment and the fifth embodiment, and estimates the distance between the transmitting terminal and the receiving terminal, and performs processing that is regarded as a communication partner if it is equal to or less than a predetermined distance. . The difference from the second embodiment and the fifth embodiment is that in this embodiment, the distance is estimated using radio waves for short-range wireless communication.

  Below, the process which the control part 25 for implement | achieving this function is demonstrated. The above functions are realized on the assumption that each mobile phone of the data transmission source and the data reception destination has the same function as the mobile phone 1 of the present embodiment described below.

  When the sixth transmission process shown in FIG. 12A is started, the control unit 25 designates data to be transmitted to the user from user data (photo data, video data, etc.) stored in the built-in flash memory. A data selection screen is displayed on the display unit 15 to inquire about data to be transmitted, and a response is obtained from the user through the operation unit 11 (S1110).

  Next, an inquiry packet is broadcast in the form of radio waves through the short-range wireless communication unit 21 and a response packet is received to find another mobile phone 1 located in the communication area (S1120). Specifically, the mobile phone 1 that has transmitted a response packet to the inquiry packet is found as another mobile phone 1 located within the communication range. After the end of S1120, a message instructing the mobile phone of the data transmission destination to bring the mobile phone closer to the mobile phone is displayed on the display screen, and the mobile phone of the data transmission destination is displayed to the user. The user is prompted to approach the phone (S1130).

  Then, the address response request packet storing the radio field strength information is transmitted as a radio wave to the surroundings with the radio field intensity through the short-range radio communication unit 21 (S1140). That is, the information on the radio wave intensity is information on the output intensity of the radio wave transmitted in S1140. More specifically, the mobile phone 1 is configured to determine the radio wave intensity based on various conditions before transmitting the radio wave and perform transmission with the determined radio wave intensity. Then, the processing of S1140 is to store the determined radio wave intensity information in the address response request packet and transmit it.

  When this process is completed, the control unit 25 accepts reception of a packet in which the address of the packet transmission source mobile phone and the information on the radio wave intensity are stored as a response packet to the address response request packet for a predetermined time.

  Then, it is determined whether or not the packet storing the address of the packet transmission source mobile phone and the radio wave intensity information is received through the short-range wireless communication unit 21 as a response packet to the address response request packet within a predetermined time. (S1150). If the response packet cannot be received within a predetermined time after the transmission of the address response request packet, it is determined No in S1150, and the sixth transmission process is terminated.

  On the other hand, if it is determined that the response packet has been received through the short-range wireless communication unit 21 (S1150: Yes), the control unit 25 transmits, for each received response packet, the radio wave intensity described in the response packet and the S1140. It is determined whether or not the difference from the current radio field intensity is equal to or less than a predetermined threshold (S1160). For all received response packets, if the difference between the information on the radio wave intensity described in the packet and the radio wave intensity transmitted in S1140 is not less than a predetermined threshold (S1160: No), the sixth transmission process is performed. Finish.

  On the other hand, for any one of the received response packets, if the difference between the radio wave intensity recorded in the packet and the radio wave intensity transmitted in S1140 is equal to or smaller than a predetermined threshold (S1160: Yes) ), The received response packet, and the addressed mobile phone indicated by each response packet in which the difference between the radio wave intensity described in the packet and the radio wave intensity transmitted in S1140 is equal to or less than a threshold is determined as the communication partner. Then, a connection request is transmitted to the mobile phone of the address destination, and the connection between the mobile phone of the address destination and the own device is established (S1170). Then, the transmission target data specified in S1110 is transmitted to the mobile phone 1 with which the connection has been established through the short-range wireless communication unit 21 (S1180), and the sixth transmission process ends.

  Next, the sixth reception process executed mainly by the control unit 25 will be described with reference to FIG. In the sixth reception process, from the attenuation amount of the radio wave transmitted to the own device, the mobile phone 1 that has transmitted the radio wave transmits a response packet for the address response request packet to the own device ( In other words, it is determined whether a connection is requested.

  The sixth reception process is a process that the control unit 25 repeatedly executes. When the sixth reception process is started, the control unit 25 waits until an address response request packet in which the information of the radio field intensity is stored is received through the short-range wireless communication unit 21 (S1210), and the address response request packet is received. Upon reception, the intensity of the radio wave received through the short-range wireless communication unit 21 at that time is measured (S1220).

  Then, by dividing the radio wave intensity measured in S1220 by the radio wave intensity indicated by the radio wave intensity information stored in the packet received in S1210, the intensity ratio from the time of transmission of the received radio wave is obtained. It is determined whether the intensity ratio is greater than or equal to a predetermined threshold (S1225). Explaining this process, the radio wave intensity can be approximated to be attenuated in proportion to the square of the distance at a short distance. Therefore, in this embodiment, the distance from the own apparatus to the transmission terminal is roughly estimated based on the radio wave intensity when the transmission terminal transmits and the radio wave intensity received by the reception terminal.

  If it is determined that the value calculated in S1225 is not equal to or greater than the predetermined threshold (S1225: No), it is assumed that the transmitting terminal is located far away, and the sixth reception process is terminated. On the other hand, if it is determined that the value calculated in S1225 is equal to or greater than a predetermined threshold (S1225: Yes), it is assumed that the transmitting terminal is located nearby, and the radio wave intensity information acquired in S1210 and the address of the own device are obtained. A response packet for the stored address response request packet is generated and broadcast through the short-range wireless communication unit 21 (S1230).

  In addition, when a connection request is received from the external mobile phone 1 through the short-range wireless communication unit 21 within a predetermined time after the transmission of the response packet (S1240: Yes), the connection request source mobile phone is returned in response to the connection request. A connection with the telephone 1 is established (S1250). On the other hand, if the connection request cannot be received within a predetermined time after the transmission of the response packet (S1240: No), the sixth reception process is terminated.

  In addition, when the connection with the connection request source mobile phone 1 is established, the control unit 25 then receives data from the communication partner that established the connection in S1250 through the short-range wireless communication unit 21 within a predetermined time. It is determined whether or not (S1260). If no data has been received (S1260: No), the sixth reception process ends. On the other hand, if data has been received (S1260: Yes), the received data is stored in the flash memory (S1270), and the sixth reception process ends.

As described above, if the distance is estimated using radio waves, the present invention can be applied to a communication device that does not include a speaker or a microphone that inputs and outputs sound waves, and the range of applications is expanded.
The embodiments of the present invention are not limited to the examples described above.

  For example, in the communication system described in the fourth embodiment, the mobile phone 1 may be configured as a dedicated remote control device having a corresponding function, and the home appliance 100 can be remotely operated using this dedicated device. A system may be configured.

  In addition, in the first to sixth embodiments, an example in which the present invention is applied to the mobile phone 1 has been described. However, the function as the communication device of the present invention is also incorporated into a portable personal computer, a PDA, or the like. be able to.

Further, an example of using the electromagnetic wave as probe signals, will now be described. In order to realize this, an electromagnetic wave may be used as a probe signal in the first or fourth embodiment. Incidentally, this electromagnetic wave is preferably visible light. If it does so, it will become easy to send a probe signal aiming at the receiving terminal which desires communication. Further, in the second embodiment may be replaces sound waves to the electromagnetic wave.

  As a modification of the first embodiment, the mobile phone 1 may be configured as follows. That is, in the first reception process, the process of S240 is not executed, the process of S250 is always executed, and the response packet for the address response request packet is broadcast. In S250, the response to the address response request packet is transmitted. As a packet, a response packet storing the deviation amount calculated in S230 is generated together with the data number and the address of the own apparatus, and this is transmitted.

  On the other hand, in the first transmission process, the reception of the response packet is accepted for a predetermined time after the transmission of the address response request packet, and the address and data of the packet transmission source mobile phone are received as a response packet for the address response request packet within the predetermined time. It is determined whether a packet storing the number and the amount of deviation calculated by the packet transmission source is received (S160).

  If it is determined that one or more response packets have been received (Yes in S160), the data number described in the response packet for each received response packet is the data number stored in the address response request packet in the immediately preceding S150. It is determined whether or not they match (S170).

  If any of the received response packets matches the data number written in the response packet with the data number transmitted in S150 (S170: Yes), the response packet is not received. Then, from the response packets that are determined to match the data numbers, only one response packet with the smallest amount of deviation described in the packet is selected, and the mobile phone at the address indicated by the selected response packet (response packet) The transmission source mobile phone) is determined as the communication partner, a connection request is transmitted to the mobile phone of the address destination, and the connection between the mobile phone of the address destination and the own device is established (S180).

Even when the mobile phone 1 is configured in this manner, the same effects as those of the first embodiment can be obtained.
The mobile phone 1 and the home appliance 100 of the fourth embodiment can be configured similarly. That is, in the fourth reception process, the process of S840 is not executed, and the process of S850 is always executed. In S850, as in the process in S250, the information on the amount of deviation calculated in S830 is stored in the response packet for the address response request packet.

  On the other hand, in the fourth transmission process, reception of the response packet is accepted for a predetermined time after transmitting the address response request packet, and it is determined whether or not a response packet for the address response request packet has been received within the predetermined time (S740). ). If it is determined that one or more response packets have been received (Yes in S740), the process proceeds to S750 through the process of S745.

  Then, in S750, only one response packet with the smallest amount of deviation written in the packet is selected from the response packets that have been determined that the data numbers match, and the selected response packet is selected. The home appliance 100 at the address indicated by the packet (the home appliance 100 from which the response packet is sent) is determined as a communication partner, and a connection request is transmitted to the home appliance 100 at the address destination. A connection with the apparatus is established (S750).

Thus, even when the mobile phone 1 and the home appliance 100 are configured, the same effects as in the fourth embodiment can be obtained.
As a modification of the second embodiment, the mobile phone 1 may be configured as follows. That is, when calculating the peak frequency stored in the response packet transmitted in S450 of the second reception process, the average value of the power of each peak frequency used in S443 is stored in this response packet.

  Then, in S380 of the second transmission process, the packet is a response packet received from the response packets in which the difference between the peak frequency described in the packet and the peak frequency of the sound wave transmitted in S340 is equal to or less than the threshold value. Select only one response packet with the maximum power in the address, determine the mobile phone of the address destination indicated by the selected response packet (the mobile phone from which the response packet was sent) as the communication partner, and A connection request is transmitted to the destination mobile phone, and the connection between the mobile phone of the address destination and the own device is established.

If the mobile phone 1 is configured in this way, data can be exchanged between the closest mobile phones 1.
In addition, as a modification of the fifth embodiment, the mobile phone 1 may be configured as follows. That is, in S990 of the fifth transmission process, in order to set the mobile phone that is closest to the own device among other mobile phones in the vicinity as the data transmission destination, the mobile phone that is continuously connected in S990. The mobile phone 1 having the maximum sound wave power received by the own device is selected as the data transmission destination, and the data specified in S910 is transmitted to the selected mobile phone 1 through the short-range wireless communication unit 21. To do. If the mobile phone 1 is configured in this way, data can be exchanged between the closest mobile phones 1.

  As a modification of the sixth embodiment, the mobile phone 1 may be configured as follows. That is, in the sixth reception process, the process of S1225 is not executed, the process of S1230 is always executed, and in S1230, the output radio wave intensity information acquired in S1210 and the own apparatus as a response packet to the address response request packet A response packet storing information on the received radio wave intensity measured in S1220 is generated together with the address information of, and broadcasted through the short-range wireless communication unit 21.

  On the other hand, in S1150 of the sixth reception process, reception of the response packet is accepted for a predetermined time after the transmission of the address response request packet. In S1170, the received response packet includes the output radio wave intensity indicated in the packet and S1140. From the response packets whose difference from the output radio wave intensity at the threshold is less than or equal to the threshold value, select only one response packet with the maximum received radio wave intensity indicated in the packet, and the mobile phone at the address indicated by the selected response packet (Response packet transmission source mobile phone) is determined as a communication partner, a connection request is transmitted to the mobile phone of the address destination, and the connection between the mobile phone of the address destination and the own device is established ( S1170).

  If the mobile phone 1 is configured in this way, data can be exchanged between the closest mobile phones 1.

1 is a block diagram illustrating a schematic configuration of a mobile phone 1. FIG. It is a flowchart showing a 1st transmission process (a) and a 1st reception process (b). It is a flowchart showing a frequency specific process. It is a figure showing the data group obtained by a frequency specific process. It is a flowchart showing a deviation amount calculation process. It is the figure (a) showing a mode that a user swings a transmission terminal toward a receiving terminal, and the figure (b) which showed the relationship between the direction of a swing, and a Doppler effect. It is a flowchart showing a 2nd transmission process (a) and a 2nd reception process (b). It is a flowchart showing a 3rd transmission process (a) and a 3rd reception process (b). 1 is a block diagram illustrating a configuration of a home appliance 100 and a schematic configuration of a communication system configured by the home appliance 100 and the mobile phone 1. It is a flowchart showing a 4th transmission process (a) and a 4th reception process (b). It is a flowchart showing a 5th transmission process (a) and a 5th reception process (b). It is a flowchart showing a 6th transmission process (a) and a 6th reception process (b).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Mobile phone, 11 ... Operation part, 13, 113 ... Microphone, 15 ... Display part, 17 ... Speaker, 19 ... Accelerometer, 21, 121 ... Short-range wireless communication part, 23 ... Infrared communication part, 25, 125 ... Control unit, home appliance ... 100

Claims (3)

A wireless receiving means capable of receiving the wireless radio wave output from an external communication device that outputs a request signal to the surroundings in the form of a wireless radio wave;
Determination means for determining whether or not the request signal received by the wireless reception means from the external communication device is a request signal addressed to the own device based on the motion state of the external communication device relative to the own device when the request signal is output. When,
When the determination means determines that the received request signal is a request signal addressed to the own apparatus, a process execution means for executing a process corresponding to the received request signal;
With
The determination means captures a motion state of the external communication device with a camera, and when the external communication device is displaced toward the own device when the request signal is output, the request signal is a request signal addressed to the own device. A communication device characterized by determining. A wireless receiving means capable of receiving the wireless radio wave output from an external communication device that outputs a request signal to the surroundings in the form of a wireless radio wave;
Determination means for determining whether or not the request signal received by the wireless reception means from the external communication device is a request signal addressed to the own device based on the motion state of the external communication device relative to the own device when the request signal is output. When,
When the determination means determines that the received request signal is a request signal addressed to the own apparatus, a process execution means for executing a process corresponding to the received request signal;
Probe signal receiving means capable of receiving a sound signal or electromagnetic wave signal of a predetermined frequency as a probe signal output from the external communication device together with the request signal;
With
The determination unit performs frequency analysis on the probe signal received by the probe signal reception unit, calculates a Doppler shift amount of the probe signal output from the external communication device, and based on the calculated Doppler shift amount, the request The external communication device is configured to determine whether or not the external communication device is displaced toward the own device when a signal is output. The request signal from the external communication device that is displaced toward the own device when the request signal is output is addressed to the own device. A communication apparatus, characterized in that it is determined that the signal is a request signal. The program for making a computer implement | achieve the function as the said determination means and the said process execution means with which the communication apparatus of Claim 1 or Claim 2 is provided.

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