JP2017073737A - Communication device, control method for communication device, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to improve an operation feeling when a power source is absent.SOLUTION: A communication device includes first communication means for connecting with an external device through near field non-contact communication and second communication means having speed higher than that of the first communication means; and is capable of having a power source that is capable of being detachably attached and is finite. The communication device includes: detection means for detecting the presence/absence of the power source; storage means for storing an instruction request and an instruction content from the external device with respect to processing to be performed using the second communication means; and control means for performing control so as to perform the instruction content. When non-contact communication is executed by the first communication means, the detection means detects the presence/absence of the power source. When a result of the detection shows that the power source is absent, the storage means stores the instruction request and instruction content. When, after that, the power source is attached and the instruction request is present, the control means performs control according to the instruction content so that processing using the second communication means is performed with the external device.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a communication device, a communication device control method, and a program, and more particularly, to a communication device that can be driven by a battery.

In recent years, a non-contact communication method called NFC has been put into practical use. In this communication method, an electromagnetic field is generated from a master unit called a reader / writer.
Correspondingly, on the side of the slave unit called a tag, power is supplied by the excitation power generated by the electromagnetic field, and non-contact data communication is enabled between the two. Although the communication speed in the NFC system is not particularly high, there is an advantage that communication is possible only with the received power without a local power supply in the slave unit, and its practical use is accelerating.

  However, even if communication is possible only with the received power, only the NFC interface unit in the slave unit is possible, and in order to operate other circuit blocks, appropriate power is required. Also, files such as moving image data are transferred by a high-speed communication method such as Wi-Fi communication instead of NFC. The operating power of the Wi-Fi is supplied by a battery or the like that is built into the slave unit or externally attached.

The above-mentioned parent device corresponds to a smart phone (hereinafter referred to as a smartphone), and the child device corresponds to a camera.
In this communication system, by communicating with NFC, which is the first communication method, exchanges identification codes with communication partners required for Wi-Fi communication, which is the second communication method, and various settings in the application layer. To do. Specific examples of various settings in the application layer include URLs for web browsing, FTP server names and port numbers by FTP, and the like.

  At the same time, in the slave unit, when it is detected that an electromagnetic field is generated by NFC, an interrupt signal is generated to activate a circuit block such as a Wi-Fi module in a sleep state. After activation, the image is transferred by Wi-Fi communication using the exchanged identification code, thereby realizing power saving during standby.

In such a communication system, whether or not transfer to the end of Wi-Fi communication can be realized depends on the remaining battery power of the slave unit. Even if power saving during standby can be realized, the power consumed by Wi-Fi communication has not been considered.
As a precedent for solving this problem, there is Patent Document 1. This makes it impossible to start file transfer in Wi-Fi communication when the remaining amount of battery power is insufficient based on the amount of files to be transferred and the power consumption at that time. In this way, it is possible to prevent the processing from being interrupted in the middle of the file transfer and the remaining battery level from becoming almost zero.

JP 2010-87541 A

  In the above-described prior example, the wasteful consumption of the battery on the camera side can be suppressed by not starting the file transfer according to the amount of files to be transferred, the power consumption consumed by the transfer, and the remaining battery level. However, when there is almost no remaining battery power or when no battery is attached in the first place, although communication can be performed simply by NFC, subsequent Wi-Fi communication cannot be realized, and file transfer cannot be performed. For this reason, the user has tried many times, and is not suitable for the original user's intention.

In addition, although file transfer that cannot be completed in advance is suppressed in advance, even if the cause of the transfer failure becomes clear, the user has to start over from the beginning. Thus, the user's feeling of operation is supposed to be impaired.
In view of the above-described problems, an object of the present invention is to improve the operational feeling when there is no power source.

  The communication device of the present invention includes a first communication unit that connects to an external device via non-contact communication at a short distance, and a second communication unit that is faster than the first communication unit, and is detachable Communication device capable of attaching a finite power source with a detection means for detecting the presence or absence of the power source, and an instruction request and instruction content from the external device regarding processing performed by the second communication means Storage means and control means for controlling to execute the instruction content, and when the non-contact communication by the first communication means is executed, the detection means detects the presence or absence of the power source If the result of the detection is that there is no power source, the storage means stores the instruction request and instruction content, and then the control means if the power source is attached and there is the instruction request. Made the above instructions I, between said external device, and controlling to perform the process by the second communication means.

  According to the present invention, when there is no power source, the processing after the power source is restored is reserved, so that the operational feeling after the power source is restored can be improved.

It is a block diagram which shows the structural example of the camera and smartphone in embodiment of this invention. It is a sequence diagram explaining operation | movement of the camera and smartphone in embodiment. It is a flowchart explaining the control procedure from the operation | movement start of the camera in embodiment to battery replacement. It is a flowchart explaining the control procedure of the smartphone in the embodiment. It is a flowchart explaining the control procedure from the battery replacement of the camera in the embodiment to the end of transfer. It is a figure for demonstrating the outline | summary of task ID in embodiment.

<First Embodiment>
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a block diagram showing the overall configuration of a system using a non-contact communication apparatus according to an embodiment of the present invention. Here, one communication device is shown as a camera, and the other communication device is shown as a smart phone (hereinafter referred to as a smartphone). However, the present invention is not limited to this and may be a PC or a tablet.

In FIG. 1, C100 is a camera that is a tag device, and A100 is a smartphone that is a reader / writer device, both of which constitute an NFC communication system.
First, the camera C100 will be described.
The control unit C101 controls each unit of the camera C100 according to an input signal and a program as shown in FIGS. Instead of the control unit C101 controlling the entire apparatus, the entire apparatus may be controlled by a plurality of pieces of hardware sharing the processing.

The imaging unit C102 includes, for example, an optical lens unit, an optical system that controls aperture, zoom, focus, and the like, and an imaging device that converts light (video) introduced through the optical lens unit into an electrical image data signal. Consists of.
As the imaging device, a complementary metal oxide semiconductor (CMOS) or a charge coupled device image sensor (CCD) is generally used.
The imaging unit C102 is controlled by the control unit C101, thereby converting subject light imaged by the lens included in the imaging unit C102 into an electrical signal by the imaging device, performing noise reduction processing, and the like as image data. Output. In the camera C100 of the present embodiment, the image data is recorded on the recording medium C107.

A non-volatile memory (ROM) C103 is an electrically erasable / recordable non-volatile memory, and stores a program to be described later executed by the control unit C101.
The work memory (RAM) C104 is used as a buffer memory that temporarily holds image data picked up by the image pickup unit C102, an image display memory of the display unit C106, a work area of the control unit C101, and the like.

The operation unit C105 is used to receive an instruction for the camera C100 from the user. The operation unit C105 includes, for example, a power button for instructing the user to turn on / off the power of the camera C100, a release switch for instructing imaging, and a playback button for instructing reproduction of image data.
Furthermore, an operation member such as a dedicated connection button for starting communication with an external device via the short-range wireless communication unit C108 described later is included. A touch panel formed on the display unit C106 is also included in the operation unit C105. Thereby, an instruction to capture a still image is received.

  The display unit C106 performs live view display at the stage of still image capturing preparation, display of captured still image data, display of characters for interactive operation, and the like. The display unit C106 does not necessarily need to be built in the camera C100. The camera C100 can be connected not only to the display unit C106 provided on the rear surface of the camera but also to a display unit outside the camera having the same function as the display unit C106 through a connector (not shown).

The recording medium C107 can record the image data output from the imaging unit C102. The recording medium C107 may be configured to be detachable from the camera C100, or may be built in the camera C100.
The short-range wireless communication unit C108 is a communication unit that can communicate only with a few centimeters, and is an interface for connecting to an external device. In the present embodiment, the short-range wireless communication unit C108 performs communication processing according to the NFC standard and performs non-contact communication with power transmitted from an external device.
Further, the wireless module C109 is a communication unit that can exchange data with an external device at a higher speed. In the present embodiment, the wireless module C109 includes an interface for communicating with an external apparatus by a so-called wireless LAN in accordance with the IEEE 802.11 standard.

The control unit C101 realizes wireless communication with an external device by controlling the wireless module C109 and the short-range wireless communication unit C108. In this embodiment, the external device is the smartphone A100.
Here, normally, an externally connected battery C110 is used as a power source for supplying power to the camera C100. Then, power is individually supplied to each of the aforementioned blocks by a power supply unit (not shown). In the present embodiment, the operation will be described later in the case where this battery is not provided.
The above is the description of the camera C100.

Next, the smartphone A100 will be described.
The control unit A101 controls each unit of the smartphone A100 according to an input signal and a program described later. Instead of the control unit A101 controlling the entire apparatus, the entire apparatus may be controlled by a plurality of pieces of hardware sharing the processing.

  The imaging unit A102 includes, for example, an optical lens unit, an optical system that controls aperture, focus, and the like, and an imaging device that converts light (video) introduced through the optical lens unit into an electrical video signal. The In general, a CMOS or a CCD is used as the image sensor. The imaging unit A102 is controlled by the control unit A101 to convert subject light imaged by the lens included in the imaging unit A102 into an electrical signal by the imaging device, perform noise reduction processing, etc., and convert the digital data Output as image data. In the smartphone A100 of this embodiment, the image data is recorded on the recording medium A107.

A non-volatile memory (ROM) A103 is an electrically erasable and recordable non-volatile memory, and stores a program to be described later executed by the control unit A101.
The work memory (RAM) A104 is used as a buffer memory that temporarily holds image data picked up by the image pickup unit A102, an image display memory of the display unit A106, a work area of the control unit A101, and the like.

The operation unit A105 is used for the user to accept an instruction for the smartphone A100 from the user. The operation unit A105 includes, for example, a power button for instructing the user to turn on / off the power of the smartphone A100 and an operation button for instructing screen transition. A touch panel formed on the display unit A106 is also included in the operation unit A105.
The display unit A106 displays captured still image data, GUI (Graphical User Interface) display for interactive operation, and the like. Note that the display unit A106 is not necessarily built in the smartphone A100.

  The recording medium A107 can record the image data output from the imaging unit A102. The recording medium A107 may be configured to be detachable from the smartphone A100, or may be built in the smartphone A100. That is, the smartphone A100 only needs to have at least means for accessing the recording medium A107.

The short-range wireless communication unit A 108 is a communication unit that can communicate only with a few centimeters, and is an interface for connecting to an external device. In the present embodiment, the short-range wireless communication unit A 108 performs communication processing according to the NFC standard.
Further, the wireless module A 109 is a communication unit that can exchange data with an external device at a higher speed. In the present embodiment, the wireless module A 109 includes an interface for communicating with an external device through a so-called wireless LAN in accordance with the IEEE 802.11 standard.

The control unit A101 realizes wireless communication with an external device by controlling the wireless module A109 and the short-range wireless communication unit A108. In this embodiment, the external device is the camera C100.
Here, the battery A110 supplies power to the smartphone A100. And the electric power to the above-mentioned each block in smart phone A100 is supplied individually by the power supply part which is not illustrated. In the present embodiment, it is assumed that the battery A110 of the smartphone A100 sufficiently retains residual power.

Next, an overview of the system in the present embodiment will be described with reference to FIG. FIG. 2 is a sequence diagram related to the operation of the present invention.
In FIG. 2, the camera C100 and the smartphone A100 correspond to the camera C100 and the smartphone A100 of FIG. In FIG. 2, a dotted arrow indicates that the NFC communication is the first communication, and a solid line indicates the Wi-Fi communication that is the second communication. Further, the numbers given to the arrows in the figure correspond to the step numbers of the processes of the respective control units described later.

  First, when the camera C100 and the smartphone A100 approach each other, the camera C100 receives an NFC connection request transmitted from the smartphone A100. On the other hand, NFC communication is established when the camera C100 returns an NFC connection response to the smartphone A100. Subsequently, the smartphone A 100 clears the status flag via NFC communication. That is, the smartphone A 100 writes zero in a status flag area on a memory (not shown) in the short-range wireless communication unit inside the camera C 100 via NFC communication.

Thereafter, the camera C100 performs an operation for confirming the presence or absence of the battery C110 attached to the camera C100. In parallel with this, the smartphone A100 waits for a predetermined time corresponding to the time associated with the aforementioned presence / absence confirmation operation.
Here, the sequence is described when the battery C110 of the camera C100 is not present.
Next, the smartphone A 100 reads the status flag in the camera C 100 via NFC communication.

  Here, since there is no battery, the camera C100 has not rewritten the status flag, and this flag remains cleared. When the smartphone A100 reads out the status flag via NFC communication, the smartphone A100 can determine the absence of the battery of the camera C100. Further, the request flag, the task ID, and the smartphone ID are recorded in the memory in the short-range wireless communication unit of the camera C100, also through NFC communication.

Here, when the user attaches a newly fully charged battery C110 to the camera C100, the control unit C101 of the camera C100 is activated. Furthermore, the camera C100 reads the request flag, task ID, and smartphone ID that are held in the short-range wireless communication unit. Furthermore, the smartphone A 100 is waiting for a response in Wi-Fi communication.
Here, if the request flag read in the camera is 1, the camera C100 performs communication settings for the wireless module C109, and realizes a connection operation with the smartphone A100 via Wi-Fi communication.

Subsequently, the smartphone A100 transmits its smartphone ID to the camera C100 by Wi-Fi communication.
In the camera C100, the smartphone ID held in the short-range wireless communication unit is compared with the smartphone ID in the Wi-Fi communication to confirm a match. If they do not match, the Wi-Fi radio is released, but if they match, Wi-Fi communication is permitted. That is, an operation in accordance with a task ID described later, such as image transfer, is performed via Wi-Fi communication.

Next, contents processed by the respective control units in the camera C100 and the smartphone A100 will be described.
First, the operation of the control unit C101 of the camera C100 and the operation and data update status of the short-range wireless communication unit C108 from when the camera C100 comes close to the smartphone A100 to before the battery C110 of the camera C100 is attached. A flowchart to be described is shown in FIG.

In FIG. 3, in S300, when the camera C100 and the smartphone A100 are brought close to each other, the short-range wireless communication unit C108 detects the electromagnetic field from the smartphone A100 and performs the connection operation as described above. Further, an NFC communication state is established between the camera C100 and the smartphone A100.
Subsequently, in S301, as will be described later, the smartphone A100 reads the camera model name held in the camera C100 and various communication settings for Wi-Fi communication, and the camera C100 permits external writing. To do. Here, zero is written by the smartphone A100 into a predetermined status flag area on the memory existing in the short-range wireless communication unit C108 in the camera C100.

At the same time, in S302, the control unit C101 receives the interrupt signal output from the short-range wireless communication unit C108.
In S303, processing differs depending on whether or not the battery C110, which is a finite power source of the camera C100, is attached. Specifically, if the interrupt signal is received and the battery C110 is present, the process proceeds to S304, and the CPU (not shown) of the control unit C101 is activated.
On the other hand, if the battery C110 is not present, the CPU of the control unit C101 does not start, and the process proceeds to S306.

  In S304, the camera C100 is activated and the control unit C101 operates to write 1 in the status flag area in the short-range wireless communication unit C108. As will be described later, this status flag is read by the smartphone A100. If the flag value is 1, the smartphone A 100 shifts to the Wi-Fi communication mode. At the same time, in step S305, the control unit C101 of the camera C100 shifts to a Wi-Fi communication mode, and image data is transferred. Then, this process ends.

On the other hand, in S306, since the control unit C101 cannot be activated, 1 cannot be written in the status flag area as in S304.
At this time, as will be described later, the smartphone A 100 reads the status flag via NFC communication. Thereafter, the request flag area of the short-range wireless communication unit C108 is set to 1 in the smartphone A100. At the same time, the task ID is set. Accordingly, in S307, the value of the request flag, which is an instruction request from the smartphone A100, the task ID, and the like are rewritten in the smartphone A100 as the contents of the memory in the short-range wireless communication unit C108. Details of the task ID and the like will be described later.
As described above, in S307, the control unit C101 does not particularly operate, but the contents of the memory in the short-range wireless communication unit C108 are rewritten through NFC communication.

Next, the operation of the smartphone A100 will be described using the flowchart of FIG.
First, when the application is activated and approaches the camera C100, in S401, the connection request transmitted from the smartphone A100 is received by the camera C100, and the camera C100 returns a connection response to the smartphone A100, whereby NFC communication is performed. Establish.

Thereafter, in S402, the control unit A101 of the smartphone A100 writes 0 in the status flag area in the memory in the short-range wireless communication unit C108 of the camera C100 as described above.
Next, in order to wait for the activation time by the interrupt signal in the camera C100 and the subsequent processing time, in S403, the control unit A101 waits for the above processing time or more.
Thereafter, in S404, the smartphone A100 reads the status flag in the short-range wireless communication unit C108 of the camera C100 via NFC communication.

In step S405, the read flag value is determined. If the value of the flag is 1 in S405, the smartphone A100 can detect and determine that the camera power is sufficient by the operation on the camera side, and the process proceeds to S406.
In S406, Wi-Fi setting information obtained by NFC communication is set inside the smartphone A100. Subsequently, in order to perform Wi-Fi communication in S407, connection operation of Wi-Fi communication is performed.

In S408, although not shown separately, an image selection screen is displayed, and the selected image file is transferred. When the transfer is completed, the Wi-Fi communication ends in S409.
If the value of the status flag is 0 in S405, the process proceeds to S410.
In S410, the smartphone A100 can detect and determine that the power of the camera C100 is insufficient. At this time, the smartphone A 100 displays “no camera battery” on the display unit. This display prompts the user to replace the battery of the camera C100.

Next, in S411, the control unit A101 of the smartphone A100 writes 1 in the request flag area of the memory in the short-range wireless communication unit C108 of the camera C100.
In step S412, the task ID number is written in the task ID area of the memory in the short-range wireless communication unit C108. Although a detailed description is omitted for the same processing, a sub ID (to be described later) and the above-described smartphone ID are similarly written. As the smartphone ID, a model code or MAC address on the smartphone side may be written. Details of these task IDs will be described later.

In S413, the control unit A101 of the smartphone A100 determines whether a predetermined time has elapsed. If the predetermined time has passed in S413, it is determined that a timeout has occurred, and the process is completed. When the predetermined time is not exceeded in S413, the process proceeds to S414.
In S414, a response to Wi-Fi communication is waited for. If there is no response of Wi-Fi communication in S414, the process returns to S413. If there is a response in S414, the process proceeds to S406.
In S406, Wi-Fi communication settings are performed as described above. Since the subsequent processing is the same as described above, it is omitted.

Along with the above-described operation, the operation of the control unit C101 after the user newly installs a sufficiently remaining battery C110 in the camera C100 will be described with reference to the flowchart of FIG.
When the battery C110 is attached to the camera C100 and the power is turned on by the power SW, the camera CPU is first activated in S510. Thereafter, the control unit C101 reads a request flag in the short-range wireless communication unit C108.
Next, in step S511, the control unit C101 determines whether the read request flag value is 0 or 1. At this time, if the value of the request flag is 0, the process proceeds to S515.
In S515, assuming that there is no particular requirement, the camera C100 ends this processing and waits for the next user operation.

On the other hand, if the value of the request flag is 1 in S511, the process proceeds to S512.
In S512, although not shown, the current time read from the internal clock of the camera C100 is compared with the time previously recorded with the request flag. In S512, when the difference is larger than a predetermined value, for example, when it is 1 hour or more, it is assumed that the user has stopped (given up) the transfer operation, and similarly to the above, the process proceeds to the process of waiting for the next user operation S515. To do. In S512, when the above difference is within a predetermined time set in advance, the control unit C101 of the camera C100 determines that the user's smartphone A100 is waiting for communication, and proceeds to S513.

In S513, the control unit C101 reads out the task ID and the like in the short-range wireless communication unit C108. Subsequently, the control unit C101 of the camera C100 clears the request flag in the short-range wireless communication unit C108 to zero.
In S514, after setting the Wi-Fi communication, the camera C100 performs Wi-Fi communication corresponding to the task ID read in S513. When the Wi-Fi communication is completed, the process proceeds to S515 as described above.
Although detailed processing is not illustrated, after S514 and before reaching S515, the smartphone ID previously written in the short-range wireless communication unit C108 is compared with the smartphone ID by the communication by Wi-Fi. Then, it may be determined whether the smartphone has approached the previous time and has written the request flag.

In the control flow described above, the file transfer process has been described. However, the process after battery replacement is not limited to file transfer.
FIG. 6 is a diagram showing a task ID to be written together with the request flag described above and processing contents in each device corresponding to the task ID.
When the task ID = 00 and the sub ID = 00, the smartphone side sets the FTP process in S406 and performs the reception process for all files. Further, on the camera side, after the battery replacement is started, in S513, FTP-related settings are made and the FTP server is started.
Although not shown in detail, the camera side receives the FTP file reception command from the smartphone side and performs file transfer. Further, when the sub ID = 01 as in the second line, a file having only the latest date is transferred.

Next, in the case of task ID = 01, on the smartphone side, the browser is started in S406 and a predetermined URL is accessed, and on the camera side, the WWW server is started up in advance in S513 to set URL access. Has been completed.
If the task ID is 02, the camera performs SMTP in S513, automatically creates a mail with the latest still image attached, and performs transmission processing.
On the other hand, on the smartphone side, the mail software is activated in S406 and an email reception inquiry is performed to receive the sent email.

  The above is an example of a task ID, and the role of the task may be exchanged between the camera and the smartphone. Also, as long as the process is related to the network, not only the above example but also a plurality of protocol processes may be registered. The protocol processing can be changed according to the instruction content. Further, as shown by the sub ID, if an attribute related to the process is defined, more detailed settings can be defined.

  In S303 of FIG. 3 described above, it is based on the presence or absence of a battery. However, even when the battery is present, the remaining amount of the battery and the predetermined value may be compared in addition to the presence of the battery. If the value is equal to or less than the predetermined value, the same effect can be obtained by setting the battery to zero, prompting battery replacement as described above, and proceeding with the subsequent processing.

  The same applies before and after S512 in FIG. In FIG. 5, it may be determined again whether or not the remaining amount of the new battery C110 after the battery replacement is equal to or greater than a predetermined value. Then, when the remaining power detection result is satisfactory, the above-described instruction content is executed. If the remaining amount is equal to or less than the predetermined value, the process does not proceed to S514 which is a Wi-Fi communication process, but proceeds to S515.

  In the above description, the presence / absence of a battery in the camera C100 is detected and transmitted to the smartphone A100 via communication, and the smartphone A100 performs a determination operation. Various processing contents up to this determination may be performed by either the camera C100 or the smartphone A100. That is, the gist of the present invention does not depend on the content transmitted by this communication.

  Further, before the series of processing shown in FIG. 5, when not the smartphone A 100 but another smartphone B 100 (not shown) approaches the camera C 100, the status flag and the request flag are rewritten to the smartphone B 100. At this time, the camera C100 performs a series of processing shown in FIGS. 3 and 5 with the smartphone B100.

(Other embodiments)
The present invention is also realized by executing the following processing. That is, software (computer program) that implements the functions of the above-described embodiments is supplied to a system or apparatus via a network or various computer-readable storage media. Then, the computer (or CPU, MPU, etc.) of the system or apparatus reads out and executes the program.

C100 Camera C101 Control unit C102 Imaging unit C103 Non-volatile memory C104 Work memory C105 Operation unit C106 Display unit C107 Recording medium C108 Short-range wireless communication unit C109 Wi-Fi wireless module C110 Battery

Claims (9)

A first communication means for connecting to an external device via non-contact communication at a short distance; and a second communication means that is faster than the first communication means, and a detachable and finite power source is provided. A communication device capable of
Detecting means for detecting the presence or absence of the power source;
Storage means for storing an instruction request and instruction content from the external device relating to processing performed by the second communication means;
Control means for controlling to carry out the instruction content,
When non-contact communication is performed by the first communication unit, the detection unit detects the presence or absence of the power source. If the result of the detection is that there is no power source, the storage unit performs the instruction request and instruction. Remember the contents,
Thereafter, when the power source is attached and there is an instruction request, the control means controls to perform processing by the second communication means with the external device according to the instruction content. A communication device characterized by: A first communication means for connecting to an external device via non-contact communication at a short distance; and a second communication means that is faster than the first communication means, and a detachable and finite power source is provided. A communication device capable of
A comparison means for comparing the remaining amount of the power source with a predetermined value;
Storage means for storing an instruction request and instruction content from the external device relating to processing performed by the second communication means;
Control means for controlling to carry out the instruction content,
When non-contact communication by the first communication means is executed, the comparison means compares the remaining amount of the power source with a predetermined value, and if the result of the comparison is insufficient, the storage means Memorize the instruction request and instruction contents,
Thereafter, when the power source is attached and there is an instruction request, the control means controls to perform processing by the second communication means with the external device according to the instruction content. A communication device characterized by:   The control means compares the current time at which the stored instruction request is read with the time at which the instruction request is stored, and if it is within a preset predetermined time, with the external device, The communication apparatus according to claim 1, wherein control is performed to perform processing by the second communication unit.   The control means performs control so that the remaining power is detected again when there is an instruction request at the time of starting the apparatus, and the instruction content is executed when the detection result is satisfactory. The communication device according to claim 1 or 2.   The communication apparatus according to claim 1, wherein the control unit changes protocol processing in the second communication unit according to the instruction content.   The communication apparatus according to claim 1, wherein the first communication unit performs communication processing according to an NFC standard. It has a first communication step for connecting to an external device via non-contact communication at a short distance, and a second communication step that is faster than the first communication step, and is equipped with a detachable and finite power source A communication device control method capable of
A detection step of detecting the presence or absence of the power source;
A storage step of storing, in a memory, an instruction request and instruction content from the external device relating to processing performed in the second communication step;
A control step of controlling to carry out the instruction content,
When non-contact communication is performed in the first communication step, the detection step detects the presence or absence of the power source. If the result of the detection is that there is no power source, the storage step causes the instruction request and instruction Store the contents in memory,
Thereafter, when the power source is attached and there is an instruction request, the control step is controlled so as to perform processing in the second communication step with the external device according to the instruction content. A control method for a communication apparatus. It has a first communication step for connecting to an external device via non-contact communication at a short distance, and a second communication step that is faster than the first communication step, and is equipped with a detachable and finite power source A communication device control method capable of
A comparison step of comparing the remaining amount of the power source with a predetermined value;
A storage step of storing, in a memory, an instruction request and instruction content from the external device relating to processing performed in the second communication step;
A control step of controlling to carry out the instruction content,
When non-contact communication is performed by the first communication step, the comparison step compares the remaining amount of the power source with a predetermined value, and if the comparison result is insufficient, the storage step Store instruction request and instruction contents in memory,
Thereafter, when the power source is attached and there is an instruction request, the control step is controlled so as to perform processing in the second communication step with the external device according to the instruction content. A control method for a communication apparatus.   A program that causes a computer to be executed as each unit of the communication device according to any one of claims 1 to 6.

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