US9271109B2 - Pairing method between electronic devices including communication function and electronic device - Google Patents

Pairing method between electronic devices including communication function and electronic device Download PDF

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US9271109B2
US9271109B2 US14/219,942 US201414219942A US9271109B2 US 9271109 B2 US9271109 B2 US 9271109B2 US 201414219942 A US201414219942 A US 201414219942A US 9271109 B2 US9271109 B2 US 9271109B2
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electronic device
light receiving
time series
pairing
series data
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US20140287686A1 (en
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Katsuya Kobayashi
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Casio Computer Co Ltd
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Casio Computer Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
    • H04W4/008—
    • H04W4/005—
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/005—Discovery of network devices, e.g. terminals

Definitions

  • the present invention relates to a pairing method between electronic devices including a communication function and an electronic device.
  • Such data transmitted and received by wireless communication may include much personal information. Therefore, in order to protect privacy, it is necessary to accurately communicate data from one specific electronic device to another specific electronic device.
  • Japanese Patent Application Laid-Open Publication No. 2011-199381 proposes a wireless communication apparatus which predicts a distance between another apparatus based on ultrasound signals emitted from another apparatus and when the distance between the apparatus is within a predetermined range, a connection request describing the pairing information is transmitted to establish short distance wireless communication.
  • the electronic devices are paired, there is a possibility that the device may be paired with electronic devices with which the user does not desire linkage when there are a plurality of electronic devices within the accessible area of the radio wave emitted from the electronic device.
  • the present invention has been conceived in view of the above problems, and one of the main objects is to perform pairing between specific electronic devices by an easy method.
  • a pairing method which pairs a first electronic device with a second electronic device, each electronic device including a communication unit to communicate data and a light receiving unit to detect receiving light amount, the method including:
  • pairing the first electronic device with the second electronic device based on time series data of receiving light amount detected by the receiving light unit of the first electronic device in the changing of the light intensity and the time series data of receiving light amount transmitted from the second electronic device.
  • an electronic device including:
  • a communication unit which communicates data
  • a light receiving unit which detects receiving light amount
  • an obtaining unit which obtains from another electronic device time series data of receiving light amount detected in another electronic device at a same timing as detecting the receiving light amount with the light receiving unit;
  • a pairing unit which pairs the electronic device with another electronic device based on time series data of receiving light amount detected by the light receiving unit and the time series data of receiving light amount obtained by the obtaining unit.
  • FIG. 1 is an entire configuration diagram showing a wireless communication system
  • FIG. 2 is a block diagram showing an internal configuration of a cellular phone
  • FIG. 3 is a block diagram showing an internal configuration of an electronic timepiece
  • FIG. 4 is a ladder chart showing pairing processing performed in the wireless communication system
  • FIG. 5 is a flowchart showing electric current data increase/decrease pattern analysis processing performed in the cellular phone
  • FIG. 6 is an example of electric current data obtained from a cellular phone and electric current data obtained from an electronic timepiece
  • FIG. 7 is an example considered to not have the same pattern change between electric current data obtained from the cellular phone and electric current data obtained from an electronic timepiece;
  • FIG. 8 is a flowchart showing pairing processing performed in a cellular phone.
  • FIG. 1 is a diagram of an entire configuration of a wireless communication system 100 .
  • the wireless communication system 100 includes, a cellular phone 10 as a first electronic device, and an electronic timepiece 30 as a second electronic device.
  • the electronic timepiece 30 includes a timepiece main body and a band, and is a watch type timepiece which can be attached to an arm.
  • Both the cellular phone 10 and the electronic timepiece 30 include a short distance wireless communication function, and are able to communicate with each other by Bluetooth communication.
  • FIG. 2 is a block diagram showing an internal configuration of a cellular phone 10 .
  • the cellular phone 10 includes, a CPU (Central Processing Unit) 11 as an obtaining unit and a pairing unit, a ROM (Read Only Memory) 12 , a RAM (Random Access Memory) 13 , a storage unit 14 , an operation unit 15 , an internal clock 16 , a display unit 17 , a light receiving sensor 18 as a light receiving unit, a speaker 19 , a microphone 20 , a codec 21 , an RF communication unit 22 , and a Bluetooth communication unit 23 as a communication unit.
  • a CPU Central Processing Unit
  • ROM Read Only Memory
  • RAM Random Access Memory
  • the cellular phone 10 includes, a CPU (Central Processing Unit) 11 as an obtaining unit and a pairing unit, a ROM (Read Only Memory) 12 , a RAM (Random Access Memory) 13 , a storage unit 14 , an operation unit 15 , an internal clock 16 , a display unit 17 , a light receiving sensor 18 as a light receiving unit, a speaker 19 , a microphone
  • the CPU 11 centrally controls the entire operation of the cellular phone 10 and executes various computing processing. Specifically, the CPU 11 reads various processing programs stored in the ROM 12 to be expanded in the RAM 13 and performs various processing in coordination with such programs.
  • the ROM 12 is a semiconductor memory exclusive for readout, and stores various programs executed by the CPU 11 and various pieces of data.
  • the RAM 13 provides a workspace in the memory for the CPU 11 and stores temporary data for the job.
  • the storage unit 14 includes a nonvolatile memory and stores the information so as to be readable and writable.
  • the storage unit 14 stores various application programs executed by the cellular phone 10 and saved data and setting data regarding the various functions.
  • the operation unit 15 includes various buttons, etc. for receiving input operation by the user and outputs the operation signal based on the operation by the user to the CPU 11 .
  • the operation unit 15 includes a touch panel provided on a display screen of the display unit 17 .
  • the operation section 15 detects the position touched by the user's finger, etc., and outputs the operation signal according to the position to the CPU 11 .
  • the internal clock 16 is a counter which counts and holds the present time.
  • Present time data of the internal clock 16 is corrected as needed when the RF communication unit communicates with a base station.
  • the display unit 17 includes an LCD (Liquid Crystal Display), and displays a screen according to a display control signal from the CPU 11 .
  • LCD Liquid Crystal Display
  • the display unit 17 displays results of various processing executed by the cellular phone 10 , information showing whether pairing succeeded, and the like.
  • the light receiving sensor 18 is an element which executes photoelectric conversion and outputs an electric current according to receiving light amount (intensity of the received light).
  • the light receiving sensor 18 functions as a light receiving unit which detects receiving light amount.
  • the light receiving sensor 18 is provided on a face which faces the user during use of the cellular phone 10 , such as the face provided with the display unit 17 of the portable phone 10 .
  • the speaker 19 converts an electric signal based on a signal from the codec 21 to an audio signal and outputs the audio.
  • the microphone 20 detects a sound wave and converts the sound wave to an electric signal. Then, the signal is output to the codec 21 .
  • the codec 21 decodes an encoded and compressed digital audio signal and transmits the signal as an analog signal to the speaker 19 .
  • the codec 21 also encodes an audio signal output from the microphone 20 and outputs the signal to the CPU 11 or the RF communication unit 22 .
  • the RF communication unit 22 executes processing regarding transmitting and receiving packet data such as telephone audio data, electronic mail, etc. between the base station using an antenna AN 1 for RF transmission and reception, and receives and transmits data between the CPU 11 and codec 21 .
  • the Bluetooth communication unit 23 performs data communication by Bluetooth communication format with other electronic devices such as the electronic timepiece 30 through an antenna AN 2 for transmission and reception of Bluetooth communication.
  • the Bluetooth communication unit 23 can employ a format of Bluetooth communication for low energy consumption (Bluetooth Low Energy).
  • FIG. 3 is a block diagram showing an internal configuration of an electronic timepiece 30 .
  • the electronic timepiece 30 includes a CPU 31 , a ROM 32 , a RAM 33 , a storage unit 34 , an operation unit 35 , a timekeeping circuit 36 , a display unit 37 , a solar panel 38 as a light receiving unit, a secondary battery 39 , and a Bluetooth communication unit 40 as the communication unit.
  • the CPU 31 centrally controls the entire operation of the electronic timepiece 30 and executes various computing processing.
  • the CPU 31 reads various processing programs stored in the ROM 32 to be expanded in the RAM 33 and performs various processing in coordination with such programs.
  • the CPU 31 allows the display unit 37 to display the time according to the present time counted by the timekeeping circuit 36 .
  • the ROM 32 is a semiconductor memory exclusive for readout, and stores various programs executed by the CPU 31 and various pieces of data.
  • the RAM 33 provides a workspace in the memory for the CPU 31 and stores temporary data for the job.
  • the storage unit 34 includes a nonvolatile memory and stores the information so as to be readable and writable.
  • the operation unit 35 includes one or a plurality of button switches and outputs operation signals according to the operation of the switch operated by the user to the CPU 31 .
  • the timekeeping circuit 36 is a counter which counts and holds the present time.
  • the counter can be a RAM which simply stores information of the present time.
  • the display unit 37 includes an LCD of a dot-matrix display format, or the like.
  • the display unit 37 displays the present time, a setting state, information of whether pairing succeeded and the like.
  • the electronic timepiece 30 can be an analog type, and the display unit 37 can include a dial face provided with a scale and a plurality of hands which rotate above the dial face.
  • the solar panel 38 generates electricity with light from outside, and outputs electric current generated according to the receiving light amount (intensity of the received light).
  • the solar panel 38 functions as a light receiving unit which detects receiving light amount.
  • the solar panel 38 is provided on a display face, etc. of the display unit 37 of the electronic timepiece 30 .
  • the secondary battery 39 receives input of the electric current generated by the solar panel 38 and accumulates the electric current.
  • the secondary battery 39 supplies the electric power to each section.
  • the Bluetooth communication unit 40 performs data communication by Bluetooth communication format with other electronic devices such as the cellular phone 10 , etc. through an antenna AN 3 for transmission and reception of Bluetooth communication.
  • FIG. 4 is a ladder chart showing the pairing processing executed in the cellular phone 10 and the electronic timepiece 30 of the wireless communication system 100 .
  • the cellular phone 10 and the electronic timepiece 30 which are to be paired are placed adjacent to each other under the same light source.
  • the light receiving sensor 18 of the cellular phone 10 and the solar panel 38 of the electronic timepiece 30 face upward.
  • the distance between the cellular phone 10 and the electronic timepiece 30 is a distance so that the environment of the light received is similar between the devices when the user moves the palm of the hand above both devices.
  • the light source can be an interior light or sunlight.
  • the user provides a predetermined light receiving environment condition to the light receiving sensor 18 of the cellular phone 18 and the solar panel 38 of the electronic timepiece 30 .
  • a shielding state (dark state) of two seconds is employed as the predetermined light receiving environment condition to trigger the start of the pairing mode.
  • the user shields the light receiving sensor 18 of the cellular phone 10 with the palm of the left hand for two seconds or more while the user shields the solar panel 38 of the electronic timepiece 30 with the palm of the right hand for two seconds or more.
  • the light receiving sensor 18 and the solar panel 38 are covered by the hands to prevent the light entering the light receiving sensor 18 and the solar panel 38 as much as possible.
  • the CPU 11 obtains time series data of the electric current value (electric current data) corresponding to the receiving light amount detected by the light receiving sensor 18 , and judges whether the state where the light receiving sensor 18 is shielded (dark state) continues for two seconds (step A 1 ).
  • the CPU 11 judges whether the state that the electric current value included in the electric current data is a predetermined threshold or less continues for two seconds.
  • step A 1 When the state that the light receiving sensor 18 is shielded continues for two seconds (step A 1 ; YES), the CPU 11 sets the cellular phone 10 to a pairing standby state (step A 2 ).
  • the pairing standby state is a state on standby for setting a communication partner to communicate by Bluetooth communication.
  • the CPU 31 obtains the time series data of the electric current value (electric current data) corresponding to the receiving light amount detected by the solar panel 38 , and judges whether a state that the solar panel 38 is shielded (dark state) continues for two seconds (step B 1 ).
  • step B 1 When the state that the solar panel 38 is shielded continues for two seconds (step B 1 ; YES), the CPU 31 sets the electronic timepiece 30 to the pairing standby state (step B 2 ).
  • the CPU 11 transmits a call signal through the Bluetooth communication unit 23 to detect a device that can be paired (step A 3 ).
  • the Bluetooth communication unit 40 when the Bluetooth communication unit 40 receives the call signal from the cellular phone 10 , the CPU 31 transmits through the Bluetooth communication unit 40 a response signal to the cellular phone 10 (step B 3 ).
  • the user successively changes the light intensity received by the light receiving sensor 18 of the cellular phone 10 and the solar panel 38 of the electronic timepiece 30 under the same light receiving environment.
  • the user moves the palm of the hand back and forth so as to pass above the light receiving sensor 18 of the cellular phone 10 and the solar panel 38 of the electronic timepiece 30 a plurality of times.
  • the user moves the palm of the hand back and forth so as to cross above the light receiving portion of the light receiving sensor 18 and the solar panel 38 a plurality of times to intermittently shield the light received by the light receiving sensor 18 and the solar panel 38 .
  • the user moves the palm of the hand positioning the hand close enough to the light receiving sensor 18 and the solar panel 38 so that the receiving light amount of the light receiving sensor 18 and the solar panel 38 substantially changes.
  • the user needs to move the palm of the hand so that the movement of the palm of the hand is substantially the same speed for each of the light receiving sensor 18 and the solar panel 38 .
  • the palm of the hand When the palm of the hand is in a position which shields light from the light source to the light receiving sensor 18 and the solar panel 38 , the receiving light amount of the light receiving sensor 18 and the solar panel 38 reduces.
  • the receiving light amount of the light receiving sensor 18 and the solar panel 38 reduces and increases twice respectively.
  • the CPU 11 stores in the storage unit 14 the time series data of the electric current value (electric current data) corresponding to the receiving light amount detected by the light receiving sensor 18 for a predetermined term after the response signal is received from the electronic timepiece 30 (step A 4 ).
  • the electric current data of the cellular phone 10 is data where the electric current value output from the light receiving sensor 18 is corresponded to the present time output from the internal clock 16 and the above is stored according to the time.
  • the CPU 31 stores in the storage unit 34 the time series data of the electric current value (electric current data) corresponding to the receiving light amount detected by the solar panel 38 for a predetermined term after the response signal is transmitted to the cellular phone 10 (step B 4 ).
  • the electric current data of the electronic timepiece 30 is data where the electric current value output from the solar panel 38 is corresponded to the present time output from the timekeeping circuit 36 , and the above is stored according to the time.
  • the predetermined term that the electric current data is stored in the cellular phone 10 and the electronic timepiece 30 includes a time range that the intensity of light received by the light receiving sensor 18 and the solar panel 38 changes due to the motion by the user.
  • the CPU 31 transmits the electric current data stored in step B 4 through the Bluetooth communication unit 40 to the cellular phone 10 (step B 5 ).
  • the Bluetooth communication unit 23 receives the electric current data transmitted from the electronic timepiece 30 , and the CPU 11 obtains the electric current data of the electronic timepiece 30 .
  • the CPU 11 analyzes the increase/decrease pattern of the electric current data of the cellular phone 10 stored in step A 4 and the increase/decrease pattern of the electric current data transmitted from the electronic timepiece 30 (step A 5 ).
  • the CPU 11 compares the time series data of the electric current value (electric current data) corresponding to the receiving light amount detected by the light receiving sensor 18 with the time series data of the electric current value (electric current data) corresponding to the receiving light amount detected by the solar panel 38 which are to be targets of comparison. With this, the CPU 11 judges whether the increase/decrease timing matches (step C 1 ). It is considered that “the increase/decrease timing match” when the terms (time range) that the electric current value increases and the terms that the electric current value decreases match respectively in both pieces of electric current data.
  • the electric current value being substantially a certain value (including being a certain value) in both pieces of electric current data is included as a case where the “increase/decrease timing match”.
  • the positions of the receiving light sensor 18 and the solar panel 38 are relatively different from the palm of the hand when the user moves the palm of the hand. Therefore, there is a possibility that a lag in time occurs in the change of the electric current value.
  • FIG. 6 shows an example of electric current data (solid line) obtained by the light receiving sensor 18 of the cellular phone 10 and electric current data (alternate long and short dash line) obtained by the solar panel 38 of the electronic timepiece 30 .
  • the horizontal axis is the time and the vertical axis is the electric current value.
  • the electric current increases from time t 1 to time t 2 , decreases from time t 2 to time t 3 , increases from time t 3 to time t 4 , decreases from time t 4 to time t 5 , increases from time t 5 to time t 6 , and decreases from time t 6 to time t 7 .
  • the increase/decrease timing (electric current waveform pattern) in both pieces of electric current data match in the term ⁇ T 11 .
  • the magnitude of the electric current value is different, however, the shape showing the change of the increase and decrease throughout time (timing that the value reaches the maximum value or the minimum value) match.
  • step C 1 the CPU 11 judges whether variation width of the electric current value (corresponding to the receiving light amount) included in each piece of electric current data is a predetermined value or more (step C 2 ).
  • the variation width of the electric current value included in the electric current data is the difference between the maximum value and the minimum value of the electric current value included in the electric current data.
  • the “predetermined value” which is to be a standard for comparison of the variation width of the electric current value is set in advance to a value suitable for judging whether the electric current value (receiving light amount) is substantially a constant value.
  • FIG. 7 shows an example where even if the increase/decrease timing of the electric current value between the electric current data (solid line) obtained by the light receiving sensor 18 of the cellular phone 10 and the electric current data (alternate long and short dash line) obtained by the solar panel 38 of the electronic timepiece 30 match, this is not considered to be the same change in pattern.
  • the horizontal axis is the time and the vertical axis is the electric current value.
  • the electric current value from time t 16 to time t 17 is a constant value and the increase/decrease timing (electric current waveform pattern) of both pieces of electric current data match in the term ⁇ T 13 .
  • the electric current value is a constant value and does not change.
  • step C 2 when the variation width of the electric current value included in the electric current data obtained by the light receiving sensor 18 and the variation width of the electric current value included in the electric current data obtained by the solar panel are each a predetermined value or more (step C 2 ; YES), the CPU 11 judges whether the number of times that there is the increase and decrease in a predetermined amount or more within a predetermined amount of time (for example, two seconds) is a predetermined number of times (for example, three times) or more (step C 3 ) in the electric current data obtained by the light receiving sensor 18 and the electric current data obtained by the solar panel 38 .
  • a predetermined amount of time for example, two seconds
  • the increase in a predetermined amount or more is when the amount of increase (variation amount) in a monotonic increase of a string of electric current data is a predetermined amount or more.
  • the decrease in a predetermined amount or more is when the amount of decrease (absolute value of variation amount) in a monotonic decrease of a string of electric current data is a predetermined amount or more.
  • step C 3 it is possible to remove cases where the number of times that a significant increase or decrease in the electric current value based on intentional motion by the user occurs is less than a predetermined number of times even if the increase/decrease timing between the pieces of electric current data match.
  • the “predetermined amount of time”, “predetermined amount”, “predetermined number of times”, used in judgment of step C 3 is set in advance to a suitable value for detecting the intentional motion by the user.
  • increase amount P 11 from time t 1 to time t 2 decrease amount Q 11 from time t 2 to time t 3 , increase amount P 12 from time t 3 to time t 4 , decrease amount Q 12 from time t 4 to time t 5 , increase amount P 13 from time t 5 to time t 6 , and decrease amount Q 13 from time t 6 to time t 7 are a predetermined amount or more.
  • increase amount P 21 from time t 1 to time t 2 decrease amount Q 21 from time t 2 to time t 3
  • increase amount P 22 from time t 3 to time t 4 decrease amount Q 22 from time t 4 to time t 5
  • increase amount P 23 from time t 5 to time t 6 decrease time Q 23 from time t 6 to time t 7 are a predetermined amount or more.
  • both pieces of electric current data show that in term ⁇ T 12 , the value is constant from time t 11 to time t 12 , there is a decrease from time t 12 to time t 13 , the value is constant from time t 13 to time t 14 , there is an increase from time t 14 to time t 15 , and the value is constant from time t 15 to time t 16 .
  • the increase/decrease timing (electric current waveform pattern) between both pieces of electric current data match in the term ⁇ T 12 .
  • the increase and decrease within a predetermined amount of time ⁇ T 12 is once each, and this is less than the predetermined number of times (for example, three times) of increase or decrease within a predetermined amount of time ⁇ T 12 . Therefore, this is removed from the match of the increase/decrease pattern.
  • step C 3 when the increase in a predetermined amount or more occurs a predetermined number of times or more within a predetermined amount of time and the decrease in a predetermined amount or more occurs a predetermined number of times or more within a predetermined amount of time in each piece of the electric current data obtained by the light receiving sensor 18 and the electric current data obtained by the solar panel 38 (step C 3 ; YES), the CPU 11 judges that the increase/decrease pattern of the electric current data obtained by the light receiving sensor 18 and the increase/decrease pattern of the electric current data obtained by the solar panel 38 match (step C 4 ).
  • step C 1 When the increase/decrease timing between the electric current data obtained by the light receiving sensor 18 and the electric current data obtained by the solar panel 38 do not match in step C 1 (step C 1 ; NO), when the variation width of the electric current value included in either of the electric current data obtained by the light receiving sensor 18 or the electric current data obtained by the solar panel 38 is less than a predetermined value in step C 2 (step C 2 ; NO), and when the number of times that the increase in a predetermined amount or more occurs within the predetermined amount of time is less than a predetermined number of times or when the number of times that the decrease in a predetermined amount or more occurs within the predetermined amount of time is less than a predetermined number of times in either of the electric current data obtained by the light receiving sensor 18 or the electric current data obtained by the solar panel 38 in step C 3 (step C 3 ; NO), the CPU 11 judges that the increase/decrease pattern of the electric current data obtained by the light receiving sensor 18 and the increase/decrease pattern of the electric current data obtained by the solar panel 38 do not match
  • step C 4 or step C 5 the electric current data increase/decrease pattern analysis processing ends.
  • step C 1 When the match of the increase/decrease timing is judged in step C 1 , the increase/decrease timing does not have to match throughout the entire range in both pieces of electric current data which are the target of comparison. It is enough if there is a term where the increase/decrease timing match.
  • step C 2 and step C 3 the above term in which the increase/decrease timing match becomes the target of the judgments of step C 2 and step C 3 .
  • step A 6 when it is judged that the increase/decrease pattern of the electric current data of the cellular phone 10 and the increase/decrease pattern of the electric current data of the electronic timepiece 30 match in the electric current data increase/decrease pattern analysis processing (step A 6 ; YES), the CPU 11 of the cellular phone 10 transmits a signal instructing pairing to the electronic timepiece 30 through the Bluetooth communication unit 23 (step A 7 ).
  • the CPU 31 transmits a signal in response to the pairing instruction through the Bluetooth communication unit 40 to the cellular phone 10 (step B 6 ).
  • the CPU 31 sets the cellular phone 10 as the communication partner of the electronic timepiece 30 .
  • the CPU 31 stores in the storage unit 34 identification information of the cellular phone 10 obtained from the cellular phone 10 as the target device to perform Bluetooth communication.
  • the CPU 11 sets the electronic timepiece 30 as the communication partner of the cellular phone 10 .
  • the CPU 11 stores in the storage unit 14 identification information of the electronic timepiece 30 obtained from the electronic timepiece 30 as the target device to perform Bluetooth communication.
  • step A 6 when it is judged in the electric current data increase/decrease pattern analysis processing that the increase/decrease pattern of the electric current data of the cellular phone 10 and the increase/decrease pattern of the electric current data of the electronic timepiece 30 do not match (step A 6 ; NO), the CPU 11 of the cellular phone 10 transmits a signal to instruct that pairing is not possible through the Bluetooth communication unit 23 to the electronic timepiece 30 (step A 8 ).
  • the CPU 31 transmits a signal in response to the instruction that pairing is not possible through the Bluetooth communication unit 40 to the cellular phone 10 (step B 6 ).
  • the CPU 31 can judge that pairing with the cellular phone 10 is not possible when the Bluetooth communication unit 40 does not receive a signal to instruct pairing or a signal to instruct that pairing is not possible from the cellular phone 10 .
  • the CPU 11 allows the display unit 17 to display the pairing state (step A 9 ).
  • the CPU 11 displays that the pairing is completed, whereas when the pairing with the electronic timepiece 30 fails, the CPU 11 displays that the pairing failed.
  • the CPU 31 allows the display unit 37 to display the pairing state (step B 7 ).
  • the CPU 31 displays that the pairing is complete, whereas when the pairing with the cellular phone 10 fails, the CPU 31 displays that the pairing failed.
  • the cellular phone 10 and the electronic timepiece 30 are paired based on the electric current data (corresponding to time series data of the receiving light amount) obtained by the light receiving sensor 18 of the cellular phone 10 and the electric current data (corresponding to the time series data of the receiving light amount) obtained by the solar panel 38 of the electronic timepiece 30 .
  • bidirectional communication by Bluetooth communication is performed between the cellular phone 10 and the electronic timepiece 30 .
  • FIG. 8 is a flowchart showing the pairing processing executed in the cellular phone 10 .
  • the CPU 11 controls the light receiving sensor 18 to be set to a light receiving standby state which can detect receiving light amount (step D 1 ).
  • the CPU 11 obtains time series data (electric current data) of electric current value corresponding to the receiving light amount detected in the light receiving sensor 18 , and judges whether a state where the light receiving sensor 18 is shielded (dark state) continues for two seconds (step D 2 ).
  • step D 2 When the state that the light receiving sensor 18 is shielded continues for two seconds (step D 2 ; YES), the CPU 11 sets the cellular phone 10 in the pairing standby state (step D 3 ).
  • the CPU 11 attempts detection of another electronic device with which pairing is possible (step D 4 ).
  • step D 4 When another electronic device with which pairing is possible is not detected (step D 4 ; NO), the CPU 11 judges whether the processing of step D 4 is tried a predetermined number of times (step D 5 ).
  • step D 4 When the processing of step D 4 is tried a predetermined number of times (step D 5 ; YES), the CPU 11 cancels the pairing.
  • step D 4 When the processing of step D 4 is not tried a predetermined number of times (step D 5 ; NO) or when the state that the light receiving sensor 18 is shielded does not continue for two seconds in step D 2 (step D 2 ; NO), the processing returns to step D 2 .
  • step D 4 when another electronic device with which pairing is possible is detected (step D 4 ; YES), the CPU 11 starts preliminary communication with the detected electronic device (electronic timepiece 30 ) (step D 6 ).
  • the user changes the intensity of light on the light receiving sensor 18 of the cellular phone 10 and the solar panel 38 of the electronic timepiece 30 with which pairing is desired under the same light receiving environment.
  • the user moves the palm of the hand back and forth so as to shield the light on the light receiving portion of the light receiving sensor 18 and the solar panel 38 a plurality of times.
  • the CPU 11 stores in the storage unit 14 the time series data of the electric current value (electric current data) corresponding to the receiving light amount detected by the light receiving sensor 18 when the light intensity is changed (step D 7 ).
  • the CPU 11 obtains from the partner device the time series data of the electric current value (electric current data) corresponding to the receiving light amount detected by the solar panel 38 of the partner device (electronic timepiece 30 ) when the light intensity is changed through the Bluetooth communication unit 23 (step D 8 ).
  • the CPU 11 analyzes the increase/decrease pattern of the electric current data of the cellular phone 10 and the increase/decrease pattern of the electric current data of the electronic timepiece 30 when the light intensity is changed (step D 9 ).
  • the electric current data increase/decrease analysis processing is described above with reference to FIG. 5 .
  • step D 10 the CPU 11 judges that the increase/decrease pattern of the electric current data of the cellular phone 10 and the increase/decrease pattern of the electric current data of the electronic timepiece 30 do not match (step D 10 ; NO)
  • the CPU 11 transmits the signal instructing that pairing is not possible through the Bluetooth communication unit 23 to the electronic timepiece 30 .
  • the CPU 11 allows the display unit 17 to display that the pairing failed (step D 11 ).
  • step D 12 the CPU 11 judges whether the processing of step D 10 is tried a predetermined number of times.
  • step D 10 When the processing of step D 10 is tried a predetermined number of times (step D 12 ; YES), the CPU 11 cancels the pairing.
  • step D 10 When the processing of step D 10 is not tried a predetermined number of times (step D 12 ; NO), the processing returns to step D 1 .
  • step D 10 when it is judged that the increase/decrease pattern of the electric current data of the cellular phone 10 and the increase/decrease pattern of the electric current data of the electronic timepiece 30 match (step D 10 ; YES), the CPU 11 transmits a signal to instruct pairing through the Bluetooth communication unit 23 to the electronic timepiece 30 .
  • the CPU 11 sets the electronic timepiece 30 as the communication partner of the cellular phone 10 .
  • the CPU 11 allows the display unit 17 to display that the pairing is completed (step D 13 ).
  • the cellular phone 10 and the electronic timepiece 30 are set to the pairing standby state.
  • the light intensity on the light receiving sensor 18 of the cellular phone 10 and the solar panel 38 of the electronic timepiece 30 is changed under the same light receiving environment.
  • the time series data (electric current data) of the receiving light amount detected by the solar panel 38 of the electronic timepiece 30 in the second step is transmitted from the electronic timepiece 30 to the cellular phone 10 .
  • the cellular phone 10 and the electronic timepiece 30 are paired based on the time series data (electric current data) of the receiving light amount detected by the light receiving sensor 18 of the cellular phone 10 and the time series data (electric current data) of the receiving light amount transmitted from the electronic timepiece 30 in the second step.
  • two electronic devices which are to be communication partners to acknowledge each other by a simple operation, for example, by moving the palm of the hand so that the palm of the hand passes back and forth above the light receiving unit (light receiving sensor 18 , solar panel 38 ) of both devices a plurality of times in a state where the cellular phone 10 and the electronic timepiece 30 are adjacent to each other.
  • the light receiving unit light receiving sensor 18 , solar panel 38
  • the electronic devices are paired by analyzing the time series data (electric current pattern) of the receiving light amount. Therefore, the pairing is not limited to the same product (devices) of a same manufacturer or products with the same format, and it is possible to easily pair products of different manufacturers.
  • the fourth step it is judged whether the increase/decrease pattern of the electric current data of the cellular phone 10 and the increase/decrease pattern of the electric current data of the electronic timepiece 30 match, and when it is judged that the increase/decrease pattern of both pieces of data match, the cellular phone 10 and the electronic timepiece 30 are paired.
  • the fourth step when the variation width of the electric current value (receiving light amount) included in the electric current data of the cellular phone 10 or the electric current data of the electronic timepiece 30 is less than a predetermined value, it is judged that the increase/decrease pattern of the electric current data of the cellular phone 10 and the increase/decrease pattern of the electric current data of the electronic timepiece 30 do not match. Therefore, it is possible to prevent false operation such as preventing undesired pairing of electronic devices.
  • the fourth step when the number of times of the increase or decrease in a predetermined amount or more within a predetermined amount of time is less than a predetermined number of times in the electric current data of the cellular phone 10 or the electric data of the electronic timepiece 30 , it is judged that the increase/decrease pattern of the electric current data of the cellular phone 10 and the increase/decrease pattern of the electric current data of the electronic timepiece 30 do not match. Therefore, it is possible to prevent false operation such as undesired pairing of electronic devices.
  • the cellular phone 10 and the electronic timepiece 30 are set to a pairing standby state by providing a predetermined light receiving environment condition (shielding state of two seconds) on the light receiving sensor 18 of the cellular phone 10 and the solar panel 38 of the electronic timepiece 30 . Therefore, the user does not have to perform mechanical operation such as pressing buttons on the electronic device.
  • a predetermined light receiving environment condition shielding state of two seconds
  • the intensity of light which the light receiving unit receives is changed by moving the palm of the hand so as to shield the light receiving unit with the palm of the hand.
  • it is possible to change the light intensity by emitting (increasing the receiving light amount) light from a light source such as an LED (Light Emitting Diode) light, etc. to the light receiving units.
  • a light source such as an LED (Light Emitting Diode) light, etc.
  • the palm of the hand is moved back and forth a plurality of times above the light receiving unit of both devices.
  • the start of the pairing mode it is possible to pair the devices when the light receiving unit of both devices are shielded continuously for a predetermined amount of time.
  • the light from the light source can be shielded using a device, and such process is not limited to using the palm of the hand.
  • step C 3 it is considered that there is a substantial increase or decrease when the increase amount or decrease amount is a predetermined amount or more.
  • the thresholds are determined in advance according to the range of the receiving light amount of each device.
  • a threshold to judge whether the light from the light source is shielded and to judge the match of the increase/decrease pattern of the time series data of the receiving light amount based on the match of timing that the receiving light amount becomes equal to or less than this threshold.
  • the time series data (electric current data) of the electric current value corresponding to the receiving light amount is used as the time series data of the receiving light amount.
  • any value can be used as long as it is a value corresponding to the receiving light amount.
  • the light receiving unit is shielded with the palm of the hand for two seconds to act as a trigger to set the devices to the pairing standby state.
  • the user can perform other operation such as pressing a button provided on the cellular phone 10 and the electronic timepiece 30 to set the devices to the pairing standby state.
  • the light receiving sensor 18 and the solar panel 38 are used as the light receiving units.
  • the present invention is not limited to the above.
  • the cellular phone 10 when the cellular phone 10 includes a camera, the camera can be used as the light receiving element, or when the cellular phone 10 includes a solar panel, the solar panel can be used as the light receiving element.
  • the devices For example, after the cellular phone 10 and the electronic timepiece 30 are paired, it is possible to set the devices so that the reception of phone calls to the cellular phones 10 are connected or cut when the light intensity is changed by, for example, shielding the light from the light source on the solar panel 38 of the electronic timepiece 30 a predetermined number of times.
  • Bluetooth is provided as an example of a communication method between electronic devices, however, the method is not limited to the above.
  • infrared communication UWB (Ultra Wide Band), etc. may be used.
  • UWB Ultra Wide Band

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  • Engineering & Computer Science (AREA)
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  • Signal Processing (AREA)
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  • Mobile Radio Communication Systems (AREA)
  • Telephonic Communication Services (AREA)
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US20140287686A1 (en) 2014-09-25
CN104065402A (zh) 2014-09-24

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