JP2013138524A - Information processing apparatus and control method thereof, and program for causing computer to execute the control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To control processing related to data transfer by actively utilizing instantaneous interruption of a wireless link.SOLUTION: An information processing apparatus determines a frequency of disconnection of a wireless link occurred within predetermined time on the basis of a reception state of signals transmitted multiple times within the predetermined time from a partner device to which the wireless link is connected, and then controls processing related to data transfer between the information processing apparatus and the partner device according to the determined frequency of the disconnection of the wireless link.

Description

  The present invention relates to an information processing apparatus, a control method thereof, and a program for causing a computer to execute the control method.

  In recent years, proximity wireless communication (contactless communication) technology has been widely used. As an example, there is a non-contact IC card with a built-in RFID (Radio Frequency-Identification) circuit. Non-contact IC cards are used in train tickets, taking advantage of the fact that devices can be easily accessed.

  In addition, as a communication method of close proximity wireless communication, there are NFC (Near Field Communication) using electromagnetic induction, TransferJet (registered trademark) using induction electric field, and the like.

  These close proximity wireless communications have a very short communication distance, and the wireless link is connected when the devices that communicate with each other are within a few centimeters (for example, within 10 cm for NFC and within 3 cm for TransferJet), and the wireless link is disconnected when they are moved away from each other. Is done.

  Japanese Patent Application Laid-Open No. H10-228561 discloses that a higher-level protocol disconnection process is performed when a predetermined time has elapsed since the radio link was disconnected.

JP 2008-92139 A

  As described above, in the proximity wireless communication, the wireless link can be connected or disconnected by a user's intuitive operation such as bringing the devices closer to or away from each other. Therefore, by temporarily separating the devices connected to the wireless link and then bringing them closer together, an instantaneous interruption of the wireless link can be intentionally generated. Here, the instantaneous disconnection of the wireless link indicates that the wireless link is reconnected within a predetermined time (for example, within 200 msec) after the wireless link is disconnected.

  However, in the past, there has been no use for controlling the application on the device by effectively utilizing the instantaneous interruption of the wireless link.

  An object of the present invention is to improve user convenience by utilizing disconnection of a wireless link.

  In order to solve the above-described problem, the present invention provides a wireless link connected between the counterpart device and the counterpart device when the distance to the counterpart device is within a communicable range, and the counterpart device A wireless communication means for disconnecting the connected wireless link when the distance to the communication device is outside the communicable range, a determination means for determining a connection state of the wireless link with the counterpart device by the radio communication means, and the counterpart device Control means for controlling an application in accordance with a determination result by the determination means within a predetermined period of time.

  ADVANTAGE OF THE INVENTION According to this invention, a user's convenience can be improved using the cutting | disconnection of a wireless link.

Block configuration example of the digital camera 1 Block configuration example of display 2 System configuration example of image data transfer system Digital camera operation processing flowchart Example of notifying response information from the communication processing unit 109 to the application processing unit 110 An example of how to detect a momentary interruption An example of how to detect a momentary interruption

  The configuration of the image data transfer system in this embodiment is shown in FIG.

  This system includes a digital camera 1 and a display 2 having a proximity wireless communication function. Note that NFC, TransferJet, or the like can be used for close proximity wireless communication, but it is also applicable to other communication methods. A wireless link is established (connected) by bringing the distance between the antenna 104 included in the digital camera 1 and the antenna 202 included in the display 2 within a range of several millimeters to several centimeters, and an image is displayed from the digital camera 1 to the display 2. Data can be transferred.

  The display 2 has a display function for displaying the image data received from the digital camera 1 on the display unit 203 and a storage function for storing (storing) the image data in the storage unit 204, and selectively activates each function. Can also be operated in parallel.

  In this embodiment, after connecting a wireless link by bringing the digital camera 1 and the display 2 close to each other, the wireless link is temporarily disconnected by a user's intentional operation and then re-closed to reconnect the wireless link. Are performed a predetermined number of times. In the following description, reconnection of the wireless link within a predetermined time after the wireless link is disconnected will be described as “instantaneous disconnection of the wireless link”. If the wireless link is not reconnected within the predetermined time after the wireless link is disconnected, it is assumed that the wireless link is completely disconnected. The predetermined time for determining whether or not there is a momentary interruption is set in consideration of the user's operation speed of once releasing the digital camera 1 and then approaching it again (for example, 200 msec). The predetermined time may be set in advance when the digital camera 1 is shipped from the factory, or may be configured so that the user can set it. An example will be described in which an instantaneous disconnection of a wireless link generated by such a user operation is detected, and data transfer processing between the digital camera 1 and the display is controlled in accordance with the detected instantaneous disconnection feature.

  A block configuration example of the digital camera 1 of the present embodiment is shown in FIG. Reference numeral 101 denotes an imaging unit that generates image data from a light image of a subject. Reference numeral 102 denotes a memory that stores (saves) image data generated by the imaging unit 101 and other various types of information.

  Reference numeral 103 denotes a wireless control unit that realizes a close proximity wireless communication function, and reference numeral 104 denotes an antenna for transmitting or receiving a signal by close proximity wireless communication. The wireless control unit 103 manages whether a wireless link by proximity wireless communication is in a connected state or a disconnected state.

  A search timer 105 measures the transmission time of the search packet and generates an event when the transmission time ends. The time measured by the search timer 105 may be set in the device at the time of shipment from the factory, or may be set later by the user. 106 is a response monitoring unit that monitors whether a search response packet is received with respect to the search packet and notifies the instantaneous interruption determination unit 107 of the reception state of the search response packet as response information. The search packet is a confirmation signal transmitted to confirm whether or not the connected radio link is maintained, and the partner apparatus that has received the search packet normally uses the search response packet as a response signal. Controlled to transmit.

  107 detects an instantaneous interruption from the response information notified from the response monitoring unit 106, and analyzes the characteristics of the instantaneous interruption (number of instantaneous interruptions, intervals between instantaneous interruptions, and patterns (rhythms) of the instantaneous interruption). It is a judgment part. Reference numeral 108 denotes a control unit that controls processing of the entire digital camera 1. The control unit 108 controls processing related to data transfer according to the characteristics of the instantaneous interruption determined by the instantaneous interruption determination unit 107.

  In addition, a communication processing unit 109 is configured by the wireless control unit 103, the search timer 105, and the response monitoring unit 106, and an application processing unit 110 is configured by the instantaneous interruption determination unit 107 and the control unit 108.

  Reference numeral 111 denotes an operation unit for the user to perform various operations such as an imaging instruction and a proximity wireless communication start instruction. Reference numeral 112 denotes a display unit that displays image data generated by the imaging unit 101, messages that prompt the user to perform various operations, and the like.

  Next, FIG. 2 shows a block configuration example of the display 2 of the present embodiment. Reference numeral 201 denotes a wireless control unit that realizes a close proximity wireless communication function, and reference numeral 202 denotes an antenna for transmitting or receiving a signal by close proximity wireless communication. The wireless control unit 201 manages whether a wireless link by proximity wireless communication is in a connected state or a disconnected state.

  Reference numeral 203 denotes a display unit that displays image data transferred from the digital camera 1 via the proximity wireless communication function and various other information. A storage unit 204 records (saves) image data transferred from the digital camera 1 and other various information. Reference numeral 205 denotes a control unit that regulates the processing of the entire display 2.

  Note that the above functional block configuration is an example, and a plurality of functional blocks may constitute one functional block, or any functional block may be further divided into blocks that perform a plurality of functions.

  FIG. 4 shows a processing flow of the digital camera 1 in the present embodiment.

  The close proximity wireless communication functions of the digital camera 1 and the display 2 are assumed to be in a state where wireless link connection is possible. At the stage where this processing flow is started, the wireless link state managed by the wireless control unit 103 of the digital camera 1 and the wireless control unit 201 of the display 2 is a disconnected state.

  In addition, it is assumed that the memory 102 included in the digital camera 1 stores image data captured in advance by the imaging unit 101 or image data acquired from another device via proximity wireless communication.

  First, when the user performs a close proximity wireless communication start instruction operation on the operation unit 111 of the digital camera 1, the wireless control unit 103 starts connection processing for close proximity wireless communication (S101).

  Here, the user holds the digital camera 1 and places the antenna 104 of the digital camera 1 and the antenna 202 of the display 2 close to each other. When the arrangement of both antennas is close, the wireless link is connected, and the wireless link state managed by the wireless control unit 103 of the digital camera 1 and the wireless control unit 201 of the display 2 transitions from the disconnected state to the connected state (S102). .

  Here, although it has been described that the connection process is started by the user performing a close proximity wireless communication start instruction operation, the operation need not necessarily be performed. For example, the wireless link connection processing by the wireless control unit 103 and the wireless control unit 201 may be automatically started by bringing the antenna 104 of the digital camera 1 and the antenna 202 of the display 2 close to each other.

  When the wireless link state transitions to the connected state, the digital camera 1 is in a state where it can accept a user operation (hereinafter referred to as an instantaneous interruption operation) for instantaneously disconnecting the wireless link (S103). At this time, a message for notifying the user that the instantaneous interruption operation can be accepted may be displayed on the display unit 112. Then, the digital camera 1 starts the search timer 105 to measure the acceptance period of the instantaneous interruption operation (S104).

  Here, in order for the user to intentionally cause a momentary disconnection of the wireless link, the momentary disconnection operation in which the digital camera 1 is once released from the display 2 and then brought close again until the search timer 105 ends (for example, 5 Within a second). Then, the application to be activated is selected according to the characteristics of the instantaneous interruption that occurs until the search timer 105 expires. Here, the features of the instantaneous interruption include, for example, the number of instantaneous interruptions generated, the interval between each instantaneous interruption, and the pattern (rhythm) of the instantaneous interruption. The instantaneous interruption pattern is the number and interval of the instantaneous interruption. This can be determined by using.

  Here, an example in which an application to be activated is selected according to the number of instantaneous interruptions that occur until the search timer 105 ends will be described. For example, when the instantaneous interruption occurs twice, the digital camera 1 activates an image display application, transmits image data to the display 2, and causes the display unit 203 of the display 2 to display the image data. When the instantaneous interruption occurs three times, the digital camera 1 activates an image storage application, transmits image data to the display 2, and stores the image data in the storage unit 204 of the display 2. When the interruption occurs four times or more, the image data is transmitted from the digital camera 1, the image data is transmitted by the display unit 203 of the display 2, and the application to be stored in the storage unit 204 is executed. Thus, in this embodiment, instantaneous interruption is intentionally generated a predetermined number of times according to the application that the user wants to use.

  Here, although it has been described that the wireless link connection is used as a trigger to make a transition to a state in which an instantaneous interruption operation can be accepted, the state transition may be performed using another trigger. For example, when an instruction to shift to the instantaneous interruption operation acceptance mode is given by the operation unit 111, the state may be changed to a state where the instantaneous interruption operation can be accepted. By doing so, a method for controlling an application using a normal UI (user interface) such as the operation unit 111 and the display unit 112 and a method for controlling an application by a momentary interruption operation are appropriately selected according to the user's intention. Can be switched.

  The digital camera 1 transmits a search packet for the display 2 periodically (for example, at a cycle of 100 msec) a plurality of times (S105) until the search timer 105 times out (S107). Then, the digital camera 1 monitors whether or not a search response packet is received from the display 2 (S106).

  Here, the transmission cycle of the search packet can be appropriately set to such an extent that an instantaneous interruption can be detected. For example, in order to detect an instantaneous interruption of an instantaneous interruption time of T seconds or longer, the search packet transmission interval may be set to (T / 2) seconds or less. The search packet transmission interval may be set in the device at the time of factory shipment, or may be set later by the user.

  The response monitoring unit 106 of the communication processing unit 109 notifies the reception result of the search response packet to the application processing unit 110 as response information (S108). The instantaneous interruption determining unit 107 of the application processing unit 110 detects the instantaneous interruption from the notified response information and determines the characteristics of the instantaneous interruption (S109). The characteristics of the instantaneous interruption to be determined include the number of instantaneous interruptions, the instantaneous interruption interval, the pattern (rhythm) of instantaneous interruption, and the like.

  Here, a processing example until the response monitoring unit 106 of the communication processing unit 109 notifies the application processing unit 110 of the reception result of the search response packet as response information will be described with reference to FIG.

  When transitioning to a state where an instantaneous interruption operation can be accepted, the communication processing unit 109 starts the search timer 105 and starts transmitting a search packet. Here, to simplify the explanation, it is assumed that the search packet is transmitted three times before the search timer 105 times out.

  Here, the user moves the digital camera 1 so that the antenna 104 of the digital camera 1 and the antenna 202 of the display 2 are not in the proximity state within the acceptance period of the instantaneous interruption operation, and immediately moves the digital camera 1 to the proximity state. Deploy. In this way, when the user moves the digital camera 1, an instantaneous interruption of the wireless link between the digital camera 1 and the display 2 is intentionally generated.

  Then, some search packets do not reach the display 2 and search response packets from the display 2 are not transmitted, or even if the display 2 can receive the search packets, some search response packets do not reach the digital camera 1. The situation occurs.

  In the example of FIG. 5, the search response packet (F502) for the search packet (F501) cannot be received by the digital camera 1, and the response monitoring unit 106 stores “no reception”. On the other hand, since the digital camera 1 can receive the search response packets (F504, F506) for the search packets (F503, F505), the response monitoring unit 106 stores “received”.

  The response monitoring unit 106 generates presence / absence of reception of the search response packet as response information (F507). For example, when “with reception” is “1” and “without reception” is “0”, response information “011” is generated. Then, the response monitoring unit 106 notifies the generated response information to the application processing unit 110 (F508).

  Next, a method in which the instantaneous interruption determination unit 107 of the application processing unit 110 detects the instantaneous interruption from the response information notified from the response monitoring unit 106 will be described in detail with reference to FIGS. 6 and 7. 6 and 7 are diagrams illustrating the reception state of a response packet with respect to a search packet. As described above, the response monitoring unit 106 of the communication processing unit 109 notifies the application processing unit 110 of whether or not a search response packet has been received as response information.

  FIG. 6 is an example in which occurrence of an instantaneous interruption is detected when the patterns “0” and “1” included in the response information match a predetermined pattern. For example, “1001” is stored in the memory 102 as a response pattern for detecting an instantaneous interruption, and it is determined whether the response information is included in the response information and how many response patterns are included. In the example of FIG. 6, the response information is “110011001101”. By matching with the response pattern, the instantaneous interruption determination unit 107 determines that the instantaneous interruption has occurred twice. When this method is used, even if there is a location where the search response packet is not received only once (for example, “101”) in the response information, the location is not determined to be an instantaneous interruption. Therefore, for example, when the instantaneous interruption that has occurred is a predetermined interval, a predetermined application is activated (the user moves the digital camera 1 so that the instantaneous interruption occurs at a predetermined interval). is there. A plurality of response patterns for detecting an instantaneous interruption may be prepared, and it may be determined that an instantaneous interruption has occurred when the response pattern matches any of the response patterns.

  FIG. 7 is an example in which it is determined that a momentary interruption has occurred at a location where the response information is switched from “0” to “1”. In other words, this is an example in which “01” is used as a response pattern for detecting an instantaneous interruption. In the example of FIG. 7, since the response information is “110011000101” and three locations where “0” is switched to “1” are detected, the instantaneous interruption determination unit 107 determines that the instantaneous interruption has occurred three times. When this method is used, even if the search response packet is not continuously received a plurality of times, it is determined that the instantaneous interruption that has occurred is once. That is, if the digital camera 1 is once moved away from the display 2 and moved closer again, it is determined that the instantaneous interruption that has occurred is one time regardless of the length of time the digital camera 1 is separated from the display 2. Therefore, it is particularly effective when performing control such as changing an application to be activated according to the number of instantaneous interruptions that have occurred.

  The examples described with reference to FIGS. 6 and 7 are examples of a method for detecting an instantaneous interruption, and other methods may be used, or an instantaneous interruption may be detected by combining the methods of FIGS. 6 and 7. Also good. By using these methods adaptively, even if there is an influence of individual differences in the speed of moving the digital camera 1 or differences in timing of movement, instantaneous interruption can be detected appropriately.

  Returning to the description of FIG. When the characteristics of the instantaneous interruption are determined in S109, the control unit 108 of the application processing unit 110 confirms whether or not the wireless link connection state is maintained (S110), and disconnects if the connection is not maintained. Processing is performed (S111), and the processing is terminated. Whether or not the wireless link connection state is maintained can be confirmed by analyzing the response information transmitted by the response monitoring unit 106. For example, if the end of the response information is “0” (when no search response packet is received for the last transmitted search packet), it can be determined that the wireless link has been disconnected.

  If it is determined in S110 that the wireless link connection is maintained, the control unit 108 controls the application according to the determined characteristics of instantaneous interruption (S112). For example, if the number of instantaneous interruptions detected within the acceptance period of the instantaneous interruption operation is 2, the image display application is activated to transfer image data from the digital camera 1 to the display 2 (S113), and the image A data display request is also transmitted (S114). The display 2 that has received the image data transmitted from the digital camera 1 and the display request for the image data displays the received image data on the display unit 203. If the number of instantaneous interruptions detected within the acceptance period of the instantaneous interruption operation is 3, the image storage application is activated to transfer image data from the digital camera 1 to the display 2 (S113). A data storage request is also transmitted (S114). The display 2 that has received the image data transmitted from the digital camera 1 and the storage request for the image data stores the received image data in the storage unit 204.

  As described above, according to the present embodiment, it is possible to detect the instantaneous interruption of the radio link intentionally generated by the user and to determine the characteristic of the instantaneous interruption, and to apply the application according to the determined characteristic of the instantaneous interruption. Can be controlled. Therefore, since the user only has to change the speed and rhythm of the instantaneous interruption operation according to the application he wants to use, a complicated operation is unnecessary and the convenience for the user is improved. Accordingly, it is possible to realize a UI reflecting the intuitive operation of the user by taking advantage of the feature of close proximity wireless communication in which the wireless link is disconnected only by slightly separating the devices.

  In this embodiment, the instantaneous interruption detection and the instantaneous interruption characteristic determination are performed by the instantaneous interruption determination unit 107. However, the response monitoring unit 106 performs the determination of the instantaneous interruption characteristic, and according to the determination result. The control unit 108 may control the application.

  In this embodiment, the digital camera determines the characteristics of the instantaneous interruption of the wireless link based on the reception state of the search response packet with respect to the search packet periodically transmitted within the instantaneous interruption operation reception period. The search packet may not be transmitted. For example, the display periodically transmits a search packet a plurality of times within the momentary interruption operation reception period, and the digital camera detects the momentary interruption of the wireless link and the characteristics of the momentary interruption based on the reception state of the search packet. May be determined.

  In this embodiment, a system using a digital camera and a display has been described. However, the present invention can be applied to any information processing apparatus having a proximity wireless communication function such as a mobile phone, a printer, a digital video camera, and a PC. is there.

  Further, in the present embodiment, the example in which the image display application or the image storage application is activated according to the characteristics of the instantaneous interruption occurring within the predetermined time has been described. However, other applications may be activated. . The type of application to be activated can be selected as appropriate in accordance with the combination of devices constituting the system. For example, in the case of a combination of a digital camera and a printer, the image printing application may be executed according to the characteristics of the instantaneous interruption that has occurred.

  Moreover, even if the application to be executed is the same, the process to be executed may be changed according to the characteristics of the instantaneous interruption that has occurred. For example, the image data to be transferred may be switched according to the number of instantaneous interruptions that have occurred. Taking the case of an image display application as an example, assume that a plurality of images are displayed on the display unit 112 of the digital camera, and one of them is selected. And, according to the number of instantaneous interruptions that occurred at that time, there is a method of switching whether to transfer only the selected image to the display and display it on the display, or to transfer all displayed images to be displayed on the display Conceivable. In the case of an image storage application, depending on the number of instantaneous interruptions that occur, whether only the image currently displayed on the display unit 112 is transferred to the display and stored, or all untransferred images are transferred to the display and stored. A method of switching is conceivable. In the case of a combination of a digital camera and a printer, only the image currently displayed on the display unit 112 is printed, an image that has been reserved for printing by the user in advance, or all images stored in the memory are printed. Printing may be switched depending on the number of instantaneous interruptions that have occurred. As described above, various methods are conceivable as a method for controlling the application.

  Further, in the present embodiment, the case where the characteristics of the instantaneous interruption are determined on the digital camera side and the application is controlled has been described, but the characteristics of the instantaneous interruption may be determined on the display side and the application may be controlled. . In this case, the display can determine the characteristics of the instantaneous interruption of the wireless link based on the reception state of the search packet transmitted from the digital camera.

  In the above description, the number of radio link interruptions occurring within a predetermined time, the pattern of instantaneous interruptions, etc. are described. However, the number of radio link interruptions occurring within a predetermined time, the pattern of disconnection, etc. In other words.

  In addition, a recording medium recording software program codes for realizing the functions of the present embodiment is supplied to the system or apparatus, and the computer (CPU or MPU) of the system or apparatus reads the program codes stored in the recording medium. Run. It goes without saying that the object of the present invention can also be achieved by this.

DESCRIPTION OF SYMBOLS 1 Digital camera 2 Display 101 Image pick-up part 102 Memory 103 Wireless control part 104 Antenna 105 Search timer 106 Response monitoring part 107 Instantaneous interruption determination part 108 Control part 109 Communication processing part 110 Application processing part 111 Operation part 112 Display part 201 Wireless control part 202 Antenna 203 Display unit 204 Storage unit 205 Control unit

Claims (23)

An information processing apparatus,
A wireless link is connected between the counterpart device and the counterpart device when the distance to the counterpart device is within a communicable range, and connection is established when the distance to the counterpart device is outside the communicable range. A wireless communication means for disconnecting the connected wireless link;
A determination unit that determines a connection state of a wireless link with the counterpart device by the radio communication unit; a control unit that controls an application according to a determination result by the determination unit within a predetermined period of time with the counterpart device;
An information processing apparatus comprising:   The information processing apparatus according to claim 1, wherein the control unit controls an application in accordance with the number of disconnections of the radio link in the predetermined period.   The said determination means determines the frequency | count of the cutting | disconnection of the radio link which generate | occur | produced in the said predetermined time based on the reception state of the signal transmitted in multiple times within the said predetermined time from the said other party apparatus. The information processing apparatus according to 1 or 2.   The information according to any one of claims 1 to 3, wherein the control unit selects an application to be activated by the information processing apparatus in accordance with a determination result by the determination unit within a predetermined period with the counterpart device. Processing equipment. The determination means further determines an interval of each instantaneous interruption that occurred within the predetermined time,
5. The information processing according to claim 1, wherein the control unit controls the application based on the number of times of disconnection determined by the determination unit and the interval between each instantaneous interruption. apparatus. Transmitting means for transmitting a confirmation signal for confirming whether the wireless link is maintained;
6. The information processing according to claim 1, wherein the determination unit determines a connection state of a radio link based on a response signal to the confirmation signal transmitted a plurality of times within the predetermined time. apparatus. Storage means for storing a response pattern for detecting disconnection of the wireless link from response information indicating whether or not the response signal is received;
Detecting means for detecting disconnection of the wireless link by performing matching between the response information and the response pattern;
The information processing apparatus according to claim 6, wherein the determination unit determines a connection state of a radio link based on detection by the detection unit. Having storage means for storing data;
The control means controls an application for transferring data stored in the image storage means to the counterpart apparatus according to a determination result by the determination means. The information processing apparatus according to claim 1.   The control unit selects data to be transferred to the counterpart device from the data stored in the image storage unit according to the determination result by the determination unit, and transfers the selected data to the counterpart device. The information processing apparatus according to claim 8.   10. The control unit according to claim 1, wherein the control unit selects an application to be activated according to the number of disconnections determined by the determination unit, and performs data transfer processing according to the selected application. The information processing apparatus according to item. A wireless link is connected between the counterpart device and the counterpart device when the distance to the counterpart device is within a communicable range, and connection is established when the distance to the counterpart device is outside the communicable range. A method of controlling an information processing apparatus having a wireless communication means for disconnecting a connected wireless link,
A control step of controlling an application according to a connection state of a radio link with the counterpart device within a predetermined period with the counterpart device;
A method for controlling an information processing apparatus, comprising:   A program for causing a computer to execute the control method according to claim 11. An information processing apparatus,
A wireless link is connected between the counterpart device and the counterpart device when the distance to the counterpart device is within a communicable range, and connection is established when the distance to the counterpart device is outside the communicable range. A wireless communication means for disconnecting the connected wireless link;
A determination unit that determines a connection state of a wireless link with the counterpart device by the wireless communication unit; a selection unit that selects data to be communicated according to a determination result by the determination unit;
Means for communicating the data selected by the selection means;
An information processing apparatus comprising:   The information processing apparatus according to claim 13, wherein the selection unit selects data to be communicated with the counterpart apparatus according to the number of times of disconnection of the radio link in the predetermined period.   The said determination means determines the frequency | count of the cutting | disconnection of the radio link which generate | occur | produced in the said predetermined time based on the reception state of the signal transmitted in multiple times within the said predetermined time from the said other party apparatus. The information processing apparatus according to 13 or 14. The determination means further determines an interval of each instantaneous interruption that occurred within the predetermined time,
The said selection means selects the data to communicate based on the frequency | count of the cutting | disconnection determined by the said determination means, and the space | interval of each instantaneous interruption, The any one of Claim 13 thru | or 15 characterized by the above-mentioned. Information processing device. Transmitting means for transmitting a confirmation signal for confirming whether the wireless link is maintained;
17. The information processing according to claim 13, wherein the determination unit determines a connection state of a radio link based on a response signal to the confirmation signal transmitted a plurality of times within the predetermined time. apparatus. Storage means for storing a response pattern for detecting disconnection of the wireless link from response information indicating whether or not the response signal is received;
Detecting means for detecting disconnection of the wireless link by performing matching between the response information and the response pattern;
The information processing apparatus according to claim 17, wherein the determination unit determines a connection state of a radio link based on detection by the detection unit.   The information processing apparatus according to claim 13, wherein the data is image data.   The information according to any one of claims 13 to 19, wherein the means for communicating the data selected by the selection means transfers the data selected by the selection means from the information processing apparatus to the counterpart apparatus. Processing equipment. A wireless link is connected between the counterpart device and the counterpart device when the distance to the counterpart device is within a communicable range, and connection is established when the distance to the counterpart device is outside the communicable range. A method of controlling an information processing apparatus having a wireless communication means for disconnecting a connected wireless link,
A control method for an information processing apparatus, comprising: a selection step of selecting data to be communicated according to a wireless link connection state with the counterpart apparatus for a predetermined period by the wireless communication means.   A program for causing a computer to execute the control method according to claim 21.   The information processing apparatus according to claim 1, wherein the wireless communication unit uses NFC (Near Field Communication).

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