Imaging apparatus, controlling method for the same, and program

Abstract

To reduce power consumption in location detection of wirelessly connected electronic devices.SOLUTION: An imaging apparatus that wirelessly connects to an electronic device has first wireless communication means that performs data communication with an electronic device via the first wireless communication means and second wireless communication means that performs location detection of an electronic device via the second wireless communication means. When updating information of the electronic device, the imaging apparatus performs location detection of the electronic device via the second wireless communication means to acquire location information of the electronic device.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an imaging device, a control method for an imaging device, and a program. [Background technology]

[0002] When configuring settings for multiple wireless microphones connected to an imaging device such as a digital camera, the position information of each wireless microphone is reflected in the captured image to make it easier to distinguish between individual wireless microphones. In Patent Document 1, a person and their estimated position identified by a face recognition system in the imaging device are associated with the estimated position of the wireless microphone by wireless communication, making it easier to distinguish between individual wireless microphones. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2016-9949 A Summary of the Invention [Problem to be solved by the invention]

[0004] The technology disclosed in Patent Document 1 requires a face recognition system to associate people in captured images with wireless microphones, and power consumption increases due to constant position detection and tracking. Therefore, the present invention aims to reduce power consumption in position detection of wirelessly connected electronic devices. [Means for solving the problem]

[0005] The imaging device of the present invention is an imaging device that is wirelessly connected to an electronic device, and has a first wireless communication means that performs data communication with the electronic device via a first wireless communication, and a second wireless communication means that performs position detection of the electronic device via a second wireless communication, and is characterized in that when updating information of the electronic device, position detection of the electronic device is performed by the second wireless communication means to obtain position information of the electronic device. Effect of the Invention

[0006] According to the present invention, it is possible to reduce power consumption in detecting the position of an electronic device that is wirelessly connected. [Brief description of the drawings]

[0007] [Figure 1] 1 is a diagram illustrating an example of the configuration of an electronic device and an imaging device. [Diagram 2] 10 is a flowchart illustrating an operation of the electronic device. [Diagram 3] 4 is a flowchart illustrating an operation of the imaging apparatus. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Fig. 1 is a block diagram showing an example of the configuration of an electronic device 100 and an imaging device 150 in this embodiment. The imaging device 150 is an imaging device such as a digital camera. The electronic device 100 is an electronic device such as an accessory device that can be wirelessly connected to the imaging device 150. In the following, an example will be described in which the electronic device 100 is a wireless microphone that can be wirelessly connected to the imaging device 150.

[0009] The electronic device 100 will be described. The electronic device 100 has a microphone 101 for acquiring (collecting) sound, a sound processing unit 102, a first wireless communication unit 103, a second wireless communication unit 104, and an acceleration detection unit 105.

[0010] The audio processing unit 102 performs various audio processes such as adjusting the audio level of the audio signal acquired (picked up) by the microphone 101, and converts the audio signal received as an analog signal into digital data (audio data). The audio processing unit 102 outputs the processed audio data to the first wireless communication unit 103.

[0011] The first wireless communication unit 103 has a function of performing data communication with the wirelessly connected imaging device 150 via the first wireless communication, and transmits and receives, for example, audio data output from the audio processing unit 102 and data such as acceleration output from the acceleration detection unit 105. The first wireless communication unit 103 has an MPU unit 106, a first wireless control unit 107, and an encoding unit 108.

[0012] The MPU (Micro Processing Unit) section 106 has built-in ROM, RAM, and EEPROM (not shown) for holding programs and data for controlling the operation of the electronic device 100. The ROM (Read Only Memory) stores, for example, programs, and the RAM (Random Access Memory) stores, for example, variables. The EEPROM (Electrically Erasable Programmabe ROM) is an electrically erasable and writable memory, and stores, for example, various parameters. The MPU section 106 executes a program stored in the ROM, whereby the electronic device 100 operates, and for example, the audio processing section 102, the second wireless communication section 104, and the acceleration detection section 105 are controlled. For example, the MPU section 106 and these functional sections communicate with each other regarding control by a communication method such as SPI (Serial Peripheral Interface) communication or I2C (Inter-Integrated Circuit) communication. Note that the communication method for the communication regarding control is not limited to the above-mentioned communication method, and other communication methods may be applied.

[0013] The first wireless control unit 107 transmits audio data of the sound acquired by the microphone 101, which is input via the audio processing unit 102, to the first wireless communication unit 151 of the imaging device 150. The first wireless control unit 107 can also receive a notification from the first wireless communication unit 151 of the imaging device 150 and transmit an acceleration output input from the acceleration detection unit 105 to the first wireless communication unit 151 of the imaging device 150. The first wireless control unit 107 and the first wireless communication unit 151 of the imaging device 150 communicate with each other using a wireless communication method such as Bluetooth (registered trademark) or ZigBee (registered trademark). Note that the communication method is not limited to these, and the first wireless control unit 107 and the first wireless communication unit 151 of the imaging device 150 may communicate with each other using another wireless communication method.

[0014] The encoding unit 108 has a function of compressing audio data. For example, the encoding unit 108 compresses the audio data output from the audio processing unit 102 into a format compatible with the first wireless communication unit 103 and the first wireless communication unit 151 of the imaging device 150.

[0015] The second wireless communication unit 104 has a function of performing a position detection process by the second wireless communication. In this embodiment, the second wireless communication unit 104 performs the position detection process by the second wireless communication, for example, when updating information of the electronic device 100. The second wireless communication unit 104 has a second wireless control unit 109 and a position detection unit 110.

[0016] The second wireless control unit 109 can transmit and receive a signal capable of detecting the relative position between the electronic device 100 and the imaging device 150 to the second wireless communication unit 152 of the imaging device 150. The second wireless control unit 109 can also output a signal received from the second wireless communication unit 152 of the imaging device 150 to the position detection unit 110. The second wireless control unit 109 and the second wireless communication unit 152 of the imaging device 150 communicate with each other using a wireless communication method such as UWB (Ultra Wide Band). Note that the communication method is not limited to these, and the second wireless control unit 109 and the second wireless communication unit 152 of the imaging device 150 may communicate with each other using another wireless communication method.

[0017] The position detection unit 110 has a function of detecting the relative positions of the connected devices. The position detection unit 110 detects the relative position of the electronic device 100 with respect to the imaging device 150 based on a signal input from the second wireless control unit 109. For example, the second wireless control unit 109 has an array antenna, and it is possible to detect the relative angle by AoA (Angle of Arrival) or the like that utilizes the phase difference of multiple radio waves received by the array antenna. It is also possible to detect the relative distance by ToF (Time of Flight) or the like that calculates the distance from the time it takes for a radio wave to reach a receiver from a transmitter.

[0018] The acceleration detection unit 105 has a function of detecting the acceleration of the electronic device 100, and can detect a change in at least one of the speed and the displacement of the electronic device 100. The acceleration detection unit 105 has a sensor capable of detecting the acceleration of the electronic device 100 along three axes, and can output the acceleration acquired by the sensor to the MPU unit 106 of the first wireless communication unit 103.

[0019] Next, a description will be given of the imaging device 150. The imaging device 150 has a first wireless communication unit 151, a second wireless communication unit 152, a CPU 153, an MPU 154, an operation unit 155, an imaging unit 156, and a display unit 157.

[0020] The first wireless communication unit 151 has a function of performing data communication with the wirelessly connected electronic device 100 through the first wireless communication, and transmits and receives data such as voice data and acceleration output, and various notifications, to and from the electronic device 100. The first wireless communication unit 151 has a first wireless control unit 158 ​​and a decoding unit 159.

[0021] The first wireless control unit 158 ​​receives the voice data and the acceleration output transmitted from the first wireless communication unit 103 of the electronic device 100. In addition, the first wireless control unit 158 ​​transmits a notification to the first wireless communication unit 103 of the electronic device 100. As described above, the first wireless control unit 158 ​​and the first wireless communication unit 103 of the electronic device 100 communicate with each other using a wireless communication method such as Bluetooth or ZigBee. Note that the communication method is not limited to these, and communication may be performed using other communication methods.

[0022] The decoding unit 159 has a function of decompressing (expanding) compressed audio data. For example, the decoding unit 159 decompresses the compressed audio data transmitted from the first wireless communication unit 103 of the electronic device 100 into a format compatible with the audio processing unit 164.

[0023] The second wireless communication unit 152 has a function of performing a position detection process by the second wireless communication. In this embodiment, the second wireless communication unit 152 performs a position detection process by the second wireless communication when updating information of the electronic device 100, for example, to acquire position information of the electronic device 100. For example, when a setting operation related to the electronic device 100 is performed in the imaging device 150 (when a display operation of a setting screen is performed) or when the audio level of the audio data acquired from the electronic device 100 is equal to or higher than a predetermined value, the position detection of the electronic device 100 is performed. Also, for example, when the acceleration of the electronic device 100 is equal to or higher than a predetermined value, or when the amount of movement of the electronic device 100 during a period when the wireless connection with the electronic device 100 by the first wireless communication unit 151 is disconnected is equal to or higher than a predetermined value, the position detection of the electronic device 100 is performed. The second wireless communication unit 152 has a second wireless control unit 160 and a position detection unit 161.

[0024] The second wireless control unit 160 can transmit and receive a signal capable of detecting the relative position between the electronic device 100 and the imaging device 150 to the second wireless communication unit 104 of the electronic device 100. The second wireless control unit 160 can also output a signal received from the second wireless communication unit 104 of the electronic device 100 to the position detection unit 161. As described above, the second wireless control unit 160 and the second wireless communication unit 104 of the electronic device 100 communicate with each other using a wireless communication method such as UWB. Note that the communication method is not limited to these, and communication may be performed using other wireless communication methods.

[0025] The position detection unit 161 has a function of detecting the relative positions of the connected devices. The position detection unit 161 detects the relative position of the electronic device 100 with respect to the imaging device 150 based on a signal input from the second wireless control unit 160. The position detection unit 161 can detect the relative position in the same manner as the position detection unit 110 of the electronic device 100. For example, the second wireless control unit 160 has an array antenna and can detect the relative angle by AoA or the like using the phase difference of multiple radio waves received by the array antenna, and the relative distance by ToF or the like calculating the distance from the time it takes for a radio wave to reach a receiver. In addition, the position detection unit 161 can output the position information of the electronic device 100 obtained by the detection process of the relative position to the MPU 154.

[0026] The CPU (Central Processing Unit) 153 performs various data processing such as image processing and audio processing, display control, and the like. The CPU 153 has an imaging processing unit 162, a display control unit 163, and an audio processing unit 164. The imaging processing unit 162 performs image processing on an imaging signal (imaging data) acquired from the imaging unit 156, and performs processing to generate image data (still image data or video data). The display control unit 163 outputs data to be displayed on the display unit 157. Examples of the data to be displayed include image data and menu display generated by the imaging processing unit 162, and information such as position information of the electronic device 100 calculated by the MPU 154. The audio processing unit 164 can adjust the audio level of an audio signal acquired by a microphone (not shown) or the first wireless communication unit 151.

[0027] The MPU (Micro Processing Unit) 154 has a built-in ROM, RAM, and EEPROM (not shown) for holding programs and data for controlling the operation of the imaging device 150. For example, the ROM stores programs, the RAM stores variables, and the EEPROM stores various parameters. The MPU 154 executes a program stored in the ROM, whereby the imaging device 150 operates and controls, for example, the first wireless communication unit 151, the second wireless communication unit 152, and the CPU 153 by communicating with them using a communication method such as SPI communication or I2C communication. The MPU 154 can also calculate the amount of movement of the electronic device 100 based on the acceleration output of the electronic device 100 input via the first wireless communication unit 151. The MPU 154 can also acquire position information of the electronic device 100 from the second wireless communication unit 152, and can output the acquired position information of the electronic device 100 to the display control unit 163.

[0028] The operation unit 155 has operation members such as switches and buttons, accepts operation input by a user, and outputs a corresponding signal or the like to the MPU 154. The operations accepted by the operation unit 155 include, for example, an operation related to the power supply of the imaging device 150, an operation related to connection with the electronic device 100, and an operation for displaying a setting screen of the electronic device 100. The operation unit 155 may be configured integrally with the display unit 157 using a display member or the like having a touch panel function.

[0029] The imaging unit 156 has an imaging element configured by a CMOS (Complementary Metal Oxide Semiconductor) sensor, a CCD (Charge Coupled Device) sensor, etc. The imaging unit 156 photoelectrically converts a signal received through an optical system and outputs the signal to the imaging processing unit 162 as an electric signal (imaging signal, imaging data).

[0030] The display unit 157 is configured by an LCD (Liquid Crystal Display) or an OLED (Organic Light Emitting Diode). The display unit 157 is controlled by a display control unit 163, and can display input display data to the user.

[0031] Next, the operations of the electronic device 100 and the imaging device 150 in this embodiment will be described with reference to Figures 2 and 3. Figure 2 is a flowchart illustrating the operation of the electronic device 100.

[0032] In step S201, when a power switch (not shown) of the electronic device 100 is turned on, the MPU unit 106 of the electronic device 100 receives power and performs initial settings in the electronic device 100. In this initial settings, the MPU unit 106 sets memory contents and execution programs to an initialized state, and performs preparatory operations such as powering on the first wireless communication unit 103, the second wireless communication unit 104, and the acceleration detection unit 105.

[0033] Furthermore, the MPU unit 106 performs wireless settings for the first wireless control unit 107, and sets various information for wireless connection. The wireless settings for the first wireless control unit 107 include, for example, a MAC (Media Access Control) address, an SSID (Service Set Identifier), a data channel, a transmission rate, etc. With these settings, the electronic device 100 detects an imaging device 150 that can be wirelessly connected, and performs wireless connection operation.

[0034] The MPU unit 106 instructs the second wireless control unit 109 to execute a process of detecting the relative position of the electronic device 100 with respect to the imaging device 150, based on an initial position request transmitted from the second wireless control unit 160 of the imaging device 150 during wireless connection. Upon receiving the instruction to execute the relative position detection process, the second wireless control unit 109 performs a relative position detection process on the wirelessly connected imaging device 150 to detect a relative position as an initial position.

[0035] In the detection process of the relative position executed in response to the initial position request, a signal is transmitted from the second wireless control unit 109 to the second wireless control unit 160 of the imaging device 150. In the imaging device 150 that receives the signal from the second wireless control unit 109, the position detection unit 161 detects the relative position of the electronic device 100 based on the received signal. For example, the position detection unit 161 acquires the relative distance between the electronic device 100 and the imaging device 150 based on the time until the second wireless control unit 160 receives the signal and the propagation speed of the transmitted signal (radio wave). Also, for example, the position detection unit 161 acquires the relative angle between the electronic device 100 and the imaging device 150 based on the phase difference of the signal (radio wave) received by the array antenna of the second wireless control unit 160. In this way, the detection process of the relative position is executed, and the position information of the electronic device 100 indicating the relative position of the electronic device 100 with respect to the imaging device 150 is obtained by the imaging device 150. It is also possible for the second wireless control unit 160 of the imaging device 150 to perform a similar process on the second wireless control unit 109 of the electronic device 100 .

[0036] In step S202, the MPU unit 106 instructs the first wireless control unit 107 to start an acceleration transmission process for acquiring and transmitting the acceleration of the electronic device 100 detected by the acceleration detection unit 105. The first wireless control unit 107 that has received the instruction to start the acceleration transmission process transmits the acceleration output of the electronic device 100 acquired from the acceleration detection unit 105 to the wirelessly connected imaging device 150. The acquisition of the acceleration of the electronic device 100 by the first wireless control unit 107 and the transmission to the imaging device 150 are continuously performed until the wireless connection with the imaging device 150 is terminated. In addition, the MPU unit 106 estimates the amount of movement of the electronic device 100 based on the acceleration output acquired by the first wireless control unit 107. The amount of movement of the electronic device 100 can be estimated by, for example, obtaining the speed and displacement by integrating the acceleration output from the acceleration detection unit 105 over time. When the amount of movement of the electronic device 100 during the period from when the wireless connection via the first wireless communication is disconnected to when it is reconnected is equal to or greater than a predetermined value, the MPU unit 106 transmits an electronic device movement notification to the first wireless control unit 158 ​​of the imaging device 150 via the first wireless control unit 107.

[0037] In step S203, the MPU unit 106 sets the audio channel. For example, the audio channel is assigned by an audio channel number specific to the electronic device 100 or an audio channel number by wireless connection. As a method of assigning audio channels by wireless connection, there is a method of setting in the order of wireless connection by the first wireless control unit 107. In this example, a case where one electronic device 100 is connected to the imaging device 150 is shown, but it is also possible to connect multiple electronic devices to the imaging device 150. When multiple electronic devices are connected, different audio channels may be assigned to each electronic device in order to identify the multiple electronic devices. As an example of audio channel assignment when multiple electronic devices are connected, CH1 may be assigned to the first electronic device wirelessly connected, and CH2 may be assigned to the second electronic device wirelessly connected.

[0038] In step S204, the MPU unit 106 performs audio processing settings for the audio processing unit 102. The audio processing settings for the audio processing unit 102 include adjustment of audio levels, frequency characteristics of an equalizer, filter settings for reducing wind noise, etc. The MPU unit 106 can perform audio processing settings by changing the register settings of the audio processing unit 102.

[0039] In step S205, the MPU unit 106 instructs the first wireless control unit 107 to start audio transmission processing for transmitting audio data output from the audio processing unit 102. The first wireless control unit 107 that has received the instruction to start audio transmission processing transmits the audio data output from the audio processing unit 102 to the wirelessly connected imaging device 150 via compression by the encoding unit 108. The transmission of the audio data output from the audio processing unit 102 to the imaging device 150 by the first wireless control unit 107 is continuously executed until the wireless connection with the imaging device 150 is terminated.

[0040] In step S206, the MPU unit 106 judges whether or not a location information update request for the electronic device 100 has been received from the wirelessly connected imaging device 150. If the MPU unit 106 judges that a location information update request for the electronic device 100 has been received (YES), the process of step S207 is executed. On the other hand, if the MPU unit 106 judges that a location information update request for the electronic device 100 has not been received (NO), the process proceeds to step S208. Here, the location information update request for the electronic device 100 is transmitted from the second wireless control unit 160 of the imaging device 150 to the electronic device 100 when a predetermined condition is satisfied, as described later. The MPU unit 106 receives the location information update request for the electronic device 100 transmitted from the second wireless control unit 160 of the imaging device 150 via the second wireless control unit 109.

[0041] In step S207, the MPU unit 106 performs control to update the position information of the electronic device 100. Specifically, the MPU unit 106 instructs the second wireless control unit 109 to execute a process of detecting the relative position of the electronic device 100 with respect to the imaging device 150. The second wireless control unit 109, which has received the instruction to execute the process of detecting the relative position, performs the process of detecting the relative position with respect to the wirelessly connected imaging device 150 in the same manner as the process of detecting the relative position in response to the initial position request described above.

[0042] In the relative position detection process executed in response to the position information update request, a signal is transmitted from the second wireless control unit 109 to the second wireless control unit 160 of the imaging device 150. In the imaging device 150 that has received the signal from the second wireless control unit 109, the position detection unit 161 detects the relative position of the electronic device 100 based on the received signal in the same manner as in the relative position detection process in response to the initial position request described above. As a result, the imaging device 150 obtains and updates position information of the electronic device 100 indicating the relative position of the electronic device 100 with respect to the imaging device 150.

[0043] In step S208, the MPU unit 106 determines whether or not the wireless connection between the electronic device 100 and the imaging device 150 has been terminated. When an operation to terminate the connection with the electronic device 100 that is wirelessly connected is performed by operating the operation unit 155 of the imaging device 150, connection termination information is received from the first wireless control unit 158 ​​of the imaging device 150 via the first wireless control unit 107. The MPU unit 106 checks the wireless connection state with the imaging device 150 with the first wireless control unit 107 and determines whether or not the wireless connection has been terminated. If the MPU unit 106 determines that the wireless connection with the imaging device 150 has not been terminated, that is, that the wireless connection state is established (NO), the process returns to step S206, and the process of step S206 is executed. On the other hand, if the MPU unit 106 determines that the wireless connection with the imaging device 150 has been terminated (YES), the MPU unit 106 instructs each unit to perform termination processing, stops the power supply to each unit, and terminates the operation.

[0044] FIG. 3 is a flowchart illustrating the operation of the imaging device 150. In step S301, when a power switch (not shown) of the imaging device 150 is turned on, the MPU 154 of the imaging device 150 receives power and performs initial settings in the imaging device 150. In this initial settings, the MPU 154 sets memory contents and execution programs to an initialized state, and performs preparatory operations such as turning on power to the first wireless communication unit 151, the second wireless communication unit 152, the CPU 153, the imaging unit 156, and the display unit 157.

[0045] Furthermore, the MPU 154 issues a wireless setting instruction to the first wireless control unit 158. The first wireless control unit 158, which has received the wireless setting instruction, sets various information for establishing a wireless connection. The wireless settings of the first wireless control unit 158 ​​include a MAC address, an SSID, a data channel, a transmission rate, and the like, similar to those of the first wireless control unit 107 of the electronic device 100. With these settings, the imaging device 150 detects the electronic device 100 that can be wirelessly connected, and performs a wireless connection operation.

[0046] In step S302, the MPU 154 issues an audio processing instruction to the audio processing unit 164. The audio processing unit 164 starts an audio processing operation based on the audio processing instruction from the MPU 154, and acquires the audio data received from the electronic device 100 from the first wireless communication unit 151 via the decoding unit 159 and performs audio processing. The audio processing by the audio processing unit 164 on the audio data received from the electronic device 100 is continuously performed until the wireless connection with the electronic device 100 is terminated.

[0047] In step S303, the MPU 154 issues an imaging processing instruction to the imaging processing unit 162. The imaging processing unit 162 starts an imaging processing operation based on the imaging processing instruction from the MPU 154, and performs imaging processing on the imaging signal (imaging data) acquired from the imaging unit 156. The imaging data that has been subjected to the imaging processing is generated as a recording file based on a known data format. The imaging processing unit 162 continues to perform imaging processing on the imaging data until the wireless connection with the electronic device 100 is terminated.

[0048] In step S304, the MPU 154 issues an initial position request instruction to the second wireless control unit 160 for the electronic device 100. The second wireless control unit 160 that has received the initial position request instruction transmits an initial position request to the second wireless control unit 109 of the electronic device 100, and performs a relative position detection process for detecting the relative position of the electronic device 100 with respect to the imaging device 150 as the initial position.

[0049] In this relative position detection process, a signal is transmitted from the second wireless control unit 109 of the electronic device 100 to the second wireless control unit 160. The position detection unit 161 detects the relative position of the electronic device 100 based on the signal from the second wireless control unit 109 received by the second wireless control unit 160. For example, the position detection unit 161 acquires the relative distance between the electronic device 100 and the imaging device 150 based on the time until the second wireless control unit 160 receives the signal and the propagation speed of the transmitted signal (radio wave). Also, for example, the position detection unit 161 acquires the relative angle between the electronic device 100 and the imaging device 150 based on the phase difference of the signal (radio wave) received by the array antenna of the second wireless control unit 160. In this way, the relative position detection process is performed, and position information of the electronic device 100 indicating the relative position of the electronic device 100 with respect to the imaging device 150 is obtained. Note that it is also possible for the second wireless control unit 160 of the imaging device 150 to perform a similar process on the second wireless control unit 109 of the electronic device 100.

[0050] The position information (initial position information) of the electronic device 100 obtained by the detection process of the relative position by this initial position request is output to the MPU 154. The MPU 154 performs a calculation process to synchronize the angle of view of the imaging data obtained by the imaging processing unit 162 and the position information, based on the obtained initial position information of the electronic device 100. The MPU 154 outputs the position information of the electronic device 100 obtained by the calculation process and subjected to the synchronization process to the display control unit 163. The display control unit 163 outputs the input position information of the electronic device 100 and the imaging data obtained from the imaging processing unit 162 to the display unit 157 to display them. This makes it possible to associate the position information of the electronic device 100 with the captured image and display it reflected in the captured image.

[0051] In step S305, MPU 154 determines whether or not the user has performed a display operation of the setting screen of electronic device 100. The user's display operation of the setting screen is input, for example, via operation unit 155. If MPU 154 determines that the display operation of the setting screen of electronic device 100 has been performed (YES), processing of step S309 is executed. On the other hand, if MPU 154 determines that the display operation of the setting screen of electronic device 100 has not been performed (NO), processing of step S306 is executed.

[0052] In step S306, the MPU 154 determines whether or not the audio level of the audio data received by the first wireless control unit 158 ​​from the electronic device 100 is equal to or higher than a predetermined value. If the MPU 154 determines that the audio level of the received audio data from the electronic device 100 is equal to or higher than the predetermined value (YES), the process of step S309 is executed. On the other hand, if the MPU 154 determines that the audio level of the received audio data from the electronic device 100 is not equal to or higher than the predetermined value (is lower than the predetermined value) (NO), the process of step S307 is executed.

[0053] In step S307, the MPU 154 determines whether or not the acceleration of the electronic device 100 is equal to or greater than a predetermined value based on the acceleration output from the electronic device 100 received by the first wireless control unit 158. As a result, the MPU 154 detects that the position of the electronic device 100 has changed from the position at the time of the previous update. If the MPU 154 determines that the acceleration of the electronic device 100 is equal to or greater than the predetermined value (YES), the process of step S309 is executed. On the other hand, if the MPU 154 determines that the acceleration of the electronic device 100 is not equal to or greater than the predetermined value (is less than the predetermined value) (NO), the process of step S308 is executed.

[0054] In step S308, the MPU 154 determines whether the amount of movement of the electronic device 100 during the period when the wireless connection with the electronic device 100 by the first wireless communication unit 151 was disconnected is equal to or greater than a predetermined value. The MPU unit 106 of the electronic device 100 estimates the amount of movement of the electronic device 100 based on the acceleration output. Then, when the amount of movement during the period when the wireless connection by the first wireless communication is disconnected and reconnected is equal to or greater than a predetermined value, the MPU unit 106 transmits an electronic device movement notification to the first wireless control unit 158 ​​of the imaging device 150 via the first wireless control unit 107. The MPU 154 determines whether the amount of movement of the electronic device 100 during the period when the wireless connection with the electronic device 100 by the first wireless communication unit 151 was disconnected is equal to or greater than a predetermined value based on whether an electronic device movement notification has been received from the electronic device 100. When the MPU 154 determines that the amount of movement of the electronic device 100 is equal to or greater than a predetermined value, that is, that an electronic device movement notification has been received from the electronic device 100 (YES), the process of step S309 is executed. On the other hand, if the MPU 154 determines that the amount of movement of the electronic device 100 is not equal to or greater than the predetermined value (is less than the predetermined value), that is, that there has been no electronic device movement notification from the electronic device 100 (NO), the process of step S310 is executed.

[0055] In step S309, the MPU 154 instructs the second wireless control unit 160 to request an update of the location information of the electronic device 100. The second wireless control unit 160 that has received the location information update request transmits a location information update request to the second wireless control unit 109 of the electronic device 100, and performs a process of detecting the relative position of the electronic device 100 with respect to the imaging device 150. In the process of detecting the relative position in response to the location information update request, a process of detecting the relative position is performed in the same manner as the process of detecting the relative position in response to the initial position request, and the location information of the electronic device 100 is obtained and updated.

[0056] The position information of the electronic device 100 updated by the relative position detection process in response to the position information update request is also output to the MPU 154. The MPU 154 performs a calculation process to synchronize the angle of view of the imaging data obtained by the imaging processing unit 162 and the position information based on the updated position information of the electronic device 100. The MPU 154 outputs the position information of the electronic device 100 obtained by the calculation process and subjected to the synchronization process to the display control unit 163. The display control unit 163 outputs the input position information of the electronic device 100 and the imaging data obtained from the imaging processing unit 162 to the display unit 157 to display them. This makes it possible to associate the updated position information of the electronic device 100 with the captured image, reflecting them in the captured image, and display them appropriately.

[0057] In step S310, the MPU 154 determines whether or not to terminate the wireless connection between the electronic device 100 and the imaging device 150. The MPU 154 determines to terminate the wireless connection with the electronic device 100 when a connection termination operation with the wirelessly connected electronic device 100 is performed by operating the operation unit 155 of the imaging device 150. When the MPU 154 determines that the wireless connection with the electronic device 100 is to be terminated, that is, that the user has performed a connection termination operation (YES), the MPU 154 transmits connection termination information to the first wireless control unit 107 of the electronic device 100 via the first wireless control unit 158. The MPU 154 also instructs the first wireless control unit 158 ​​to perform a process of terminating the wireless connection with the electronic device 100. On the other hand, when the MPU 154 determines that the wireless connection with the electronic device 100 is not to be terminated, that is, that the user has not performed a connection termination operation (NO), the process returns to step S305, and the process of step S305 is executed.

[0058] According to this embodiment, when an update of position information is requested, the second wireless communication unit 104 of the electronic device 100 and the second wireless communication unit 152 of the imaging device 150 perform a process of detecting the relative position of the electronic device 100 with respect to the imaging device 150. In this way, when updating information of the wirelessly connected electronic device 100, position detection is performed by the second wireless communication to obtain the position information of the electronic device 100, thereby making it possible to reduce power consumption in detecting the position of the wirelessly connected electronic device.

[0059] In the above-described embodiment, the second wireless communication unit 152 of the imaging device 150 detects the position of the electronic device 100 and acquires the position information of the electronic device 100, but the electronic device 100 may detect the position and acquire the position information. In this case, for example, the second wireless communication unit 104 of the electronic device 100 detects the position of the electronic device 100 and acquires the position information of the electronic device 100, and transmits the acquired position information of the electronic device 100 to the imaging device 150 via the first wireless communication unit 103. Then, the first wireless communication unit 151 of the imaging device 150 receives the position information of the electronic device 100 and outputs the received position information of the electronic device 100 to the MPU 154.

[0060] (Another embodiment of the present invention) The present invention can also be realized by a process in which a program for implementing one or more of the functions of the above-described embodiment is supplied to a system or device via a network or a storage medium, and one or more processors in a computer of the system or device read and execute the program. The present invention can also be realized by a circuit (e.g., ASIC) for implementing one or more of the functions.

[0061] It should be noted that the above-mentioned embodiments are merely examples of the implementation of the present invention, and the technical scope of the present invention should not be interpreted as being limited by these. In other words, the present invention can be implemented in various forms without departing from its technical concept or main features.

[0062] The disclosure of the present embodiment includes the following configurations, methods, etc. (Configuration 1) An imaging device that wirelessly connects to an electronic device, a first wireless communication means for performing data communication with the electronic device through a first wireless communication; a second wireless communication means for detecting a position of the electronic device through a second wireless communication; an imaging device, characterized in that, when updating information about the electronic device, position detection of the electronic device is performed by the second wireless communication means to obtain position information about the electronic device. (Configuration 2) the electronic device is a wireless microphone having a sound pickup means, 2. The imaging device according to configuration 1, wherein the first wireless communication means communicates audio data acquired by the sound collection means. (Configuration 3) The imaging device described in configuration 1 or 2, characterized in that the second wireless communication means performs position detection of the electronic device and obtains position information of the electronic device when a setting operation related to the electronic device is performed on the imaging device. (Configuration 4) The imaging device described in configuration 3, characterized in that the second wireless communication means performs position detection of the electronic device and obtains position information of the electronic device when a display operation of a setting screen of the electronic device is performed on the imaging device. (Configuration 5) the electronic device is a wireless microphone having a sound pickup means, The imaging device described in any one of configurations 1 to 4, characterized in that the second wireless communication means performs position detection of the electronic device and acquires position information of the electronic device when the audio level of the audio data acquired from the electronic device is equal to or higher than a predetermined value. (Configuration 6) the first wireless communication means receives an acceleration output detected by an acceleration detection means included in the electronic device; The imaging device described in any one of configurations 1 to 5, characterized in that when the acceleration of the electronic device acquired based on the received acceleration output is equal to or greater than a predetermined value, the second wireless communication means performs position detection of the electronic device and acquires position information of the electronic device. (Configuration 7) The imaging device described in any one of configurations 1 to 6, characterized in that the second wireless communication means performs position detection of the electronic device and acquires position information of the electronic device when the amount of movement of the electronic device during a period when the wireless connection with the electronic device by the first wireless communication means is disconnected is greater than or equal to a predetermined value. (Configuration 8) The second wireless communication means is a wireless control means for transmitting and receiving signals related to position detection to and from said electronic device; The imaging device according to any one of configurations 1 to 7, further comprising a position detection means for detecting a relative position of the electronic device with respect to the imaging device based on a signal related to the position detection transmitted and received by the wireless control means. (Configuration 9) A display means is provided. 9. The imaging device according to any one of configurations 1 to 8, wherein position information of the electronic device is displayed on the display means together with a captured image. (Method 1) A method for controlling an imaging device wirelessly connected to an electronic device, comprising: performing data communication with the electronic device through first wireless communication using a first wireless communication means; and detecting a position of the electronic device by a second wireless communication using a second wireless communication means, A method for controlling an imaging device, comprising the steps of: detecting the position of the electronic device by the second wireless communication means when updating information of the electronic device; and acquiring position information of the electronic device. (Program 1) The computer of the imaging device that wirelessly connects to the electronic device performing data communication with the electronic device through first wireless communication using a first wireless communication means; and detecting a position of the electronic device by a second wireless communication using a second wireless communication means. a program for executing a process of detecting the position of the electronic device by the second wireless communication means and acquiring position information of the electronic device when updating information of the electronic device; [Explanation of symbols]

[0063] 100: Electronic device 103: First wireless communication unit 104: Second wireless communication unit 105: Acceleration detection unit 106: MPU unit 107: First wireless control unit 109: Second wireless control unit 110: Position detection unit 150: Imaging device 151: First wireless communication unit 152: Second wireless communication unit 154: MPU 155: Operation unit 156: Imaging unit 157: Display unit 158: First wireless control unit 160: Second wireless control unit 161: Position detection unit

Claims

1. An imaging device that wirelessly connects to an electronic device, a first wireless communication means for performing data communication with the electronic device through a first wireless communication; a second wireless communication means for detecting a position of the electronic device through a second wireless communication; an imaging device, characterized in that, when updating information of the electronic device, position detection of the electronic device is performed by the second wireless communication means to obtain position information of the electronic device.

2. the electronic device is a wireless microphone having a sound pickup means, 2. The imaging device according to claim 1, wherein the first wireless communication means communicates audio data acquired by the sound collection means.

3. The imaging device according to claim 1 , characterized in that the second wireless communication means performs position detection of the electronic device and obtains position information of the electronic device when a setting operation related to the electronic device is performed on the imaging device.

4. The imaging device according to claim 3, characterized in that the second wireless communication means performs position detection of the electronic device and obtains position information of the electronic device when a display operation of a setting screen of the electronic device is performed on the imaging device.

5. the electronic device is a wireless microphone having a sound pickup means, The imaging device according to claim 1, characterized in that the second wireless communication means performs position detection of the electronic device and acquires position information of the electronic device when the audio level of the audio data acquired from the electronic device is above a predetermined value.

6. the first wireless communication means receives an acceleration output detected by an acceleration detection means included in the electronic device; The imaging device according to claim 1, characterized in that the second wireless communication means performs position detection of the electronic device and acquires position information of the electronic device when the acceleration of the electronic device acquired based on the received acceleration output is equal to or greater than a predetermined value.

7. The imaging device according to claim 1, characterized in that the second wireless communication means performs position detection of the electronic device and acquires position information of the electronic device when the amount of movement of the electronic device during a period in which the wireless connection with the electronic device by the first wireless communication means is disconnected is greater than or equal to a predetermined value.

8. The second wireless communication means is a wireless control means for transmitting and receiving signals related to position detection to and from said electronic device; 2. The imaging device according to claim 1, further comprising a position detection unit that detects a relative position of the electronic device with respect to the imaging device based on a signal related to the position detection transmitted and received by the wireless control unit.

9. A display means is provided.

2. The imaging device according to claim 1, wherein position information of the electronic device is displayed on the display means together with a captured image.

10. A method for controlling an imaging device wirelessly connected to an electronic device, comprising: performing data communication with the electronic device through first wireless communication using a first wireless communication means; and detecting a position of the electronic device by second wireless communication using a second wireless communication means, A method for controlling an imaging device, comprising the steps of: detecting a position of the electronic device by the second wireless communication means when updating information of the electronic device; and acquiring position information of the electronic device.

11. The computer of the imaging device that wirelessly connects to the electronic device performing data communication with the electronic device through first wireless communication using a first wireless communication means; and detecting a position of the electronic device by second wireless communication using a second wireless communication means. A program that executes a process of detecting the position of the electronic device by the second wireless communication means and acquiring position information of the electronic device when updating information of the electronic device.

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