JP6139257B2 - Electronic device, communication system, transmission control method, and program - Google Patents

Description

  The present invention relates to an electronic device, a communication system, a transmission control method, and a program, and in particular, controls an electronic device that performs polling, a communication system including the electronic device, a transmission control method in the electronic device, and the electronic device. Related to the program.

  Conventionally, a communication system that receives data from a counterpart device by performing polling is known.

  For example, Patent Document 1 discloses a system that acquires an event generated by a service by polling. The system includes a service execution device and an event acquisition device. The event acquisition device requests acquisition of an event when the service execution device is inputting for requesting execution of the service, rather than when the service execution device is not input for requesting execution of the service. Reduce the interval.

  Patent Document 2 discloses a mobile communication terminal having a function of changing a polling interval. The portable communication terminal detects an event that has occurred in its own device. The mobile communication terminal includes a polling information database that stores a polling interval in association with an event. The mobile communication terminal acquires the polling interval associated with the detected event from the polling information database, and changes the polling interval to the polling interval for a predetermined time. The mobile communication terminal performs polling for a predetermined time at the changed polling interval.

  Furthermore, Patent Literature 3 discloses a remote control system that performs control based on a polling signal received from an information home appliance. In response to receiving a polling signal including device identification information and an initial polling interval in the first time slot from the information home appliance, the remote control system receives the information home appliance within a predetermined control information presence / absence determination time. It is determined whether control information has been received for the device. When receiving the control information, the remote control system transmits the second time slot after the initial polling interval by a predetermined time length from the first time slot, and then the polling signal. Assigned to information home appliances as time slots to be sent.

JP 2011-109254 A JP 2009-130438 A JP 2011-166626 A

  By the way, in an electronic device such as an electronic signboard, when repeatedly reproducing one designated moving image data among a plurality of moving image data, when switching a moving image to be reproduced to another moving image data, After the moving image data is reproduced to the end, the reproduction of the other moving image data is started.

  When such an electronic device polls an external device at a predetermined time interval, the configuration in which the electronic device receives an instruction to switch from the external device to other moving image data causes the following problems. . That is, when an instruction to switch from an external device to an electronic device is made near the end of the reproduction of moving image data (the end of one cycle), the same moving image data is reproduced again. That is, switching to other moving image data is delayed by one cycle.

  The present invention has been made in view of the above problems, and its purpose is to display the next display even when an instruction to switch reproducible data such as moving image data is given near the end of data reproduction. Another object of the present invention is to provide an electronic device, a communication system, a transmission control method, and a program that can reproduce other data in this cycle.

  According to an aspect of the present invention, an electronic device communicates with a server device. The electronic device includes a storage unit that stores a plurality of first data that can be played back by the electronic device, a playback unit that repeatedly plays back the specified first data among the plurality of first data, and a designation An inquiry means for inquiring of the server device at a predetermined time interval whether or not there is second data to be transmitted to the electronic device during reproduction of the first data, When the second data exists in the apparatus, the apparatus includes a receiving unit that receives the second data from the server device and a changing unit that changes a predetermined time interval. The second data includes an instruction for designating first data different from the first data being reproduced among the plurality of first data. The changing means shortens the predetermined time interval with the passage of time.

  Preferably, the inquiry means makes an inquiry at a timing earlier than a timing at which the first data being reproduced ends by a predetermined time.

  When the other situation of this invention is followed, an electronic device communicates with a server apparatus. The electronic device includes a storage unit that stores a plurality of first data that can be played back by the electronic device, a playback unit that repeatedly plays back the specified first data among the plurality of first data, and a designation Inquiring means for inquiring of the server device whether or not there is second data to be transmitted to the electronic device during the reproduction of the first data, and the second data in the server device And a receiving unit configured to receive the second data from the server device when present. The second data includes an instruction for designating first data different from the first data being reproduced among the plurality of first data. The inquiry means makes an inquiry at a timing earlier by a predetermined time than the timing at which the first data being reproduced ends.

  Preferably, the inquiry means informs the server apparatus whether or not there is second data to be transmitted to the electronic device at a predetermined time interval during reproduction of the designated first data. Inquire. The electronic device further includes changing means for changing a predetermined time interval. The changing means shortens the predetermined time interval with the passage of time.

  Preferably, the electronic device further includes buffer processing means for performing buffer processing to start reproduction of the different first data when reproducing the first data different from the first data being reproduced. The timing that is earlier by a predetermined time is the timing that is earlier by a time defined based on the buffer processing capability of the electronic device and the length of the reproduction time of the first data.

Preferably, the first data is moving image data.
When the further another situation of this invention is followed, a communication system is provided with a server apparatus and the electronic device which communicates with a server apparatus. The electronic device stores a plurality of first data that can be reproduced by the electronic device, and repeatedly reproduces one designated first data among the plurality of first data. The electronic device inquires of the server device at a predetermined time interval whether there is second data to be transmitted to the electronic device during reproduction of the designated first data. Based on the inquiry, when the second data exists, the server device transmits the second data to the electronic device. The electronic device receives the second data from the server device, and changes a predetermined time interval. The second data includes an instruction for designating first data different from the first data being reproduced among the plurality of first data. The electronic device shortens a predetermined time interval with the passage of time.

  When the further another situation of this invention is followed, a communication system is provided with a server apparatus and the electronic device which communicates with a server apparatus. The electronic device stores a plurality of first data that can be reproduced in the electronic device, and repeatedly reproduces one designated first data among the plurality of first data. The electronic device inquires of the server device whether there is second data to be transmitted to the electronic device during reproduction of the designated first data. Based on the inquiry, when the second data exists, the server device transmits the second data to the electronic device. The electronic device receives the second data from the server device. The second data includes an instruction for designating first data different from the first data being reproduced among the plurality of first data. The electronic device makes an inquiry at a timing earlier by a predetermined time than the timing at which the first data being reproduced ends.

  If the further another situation of this invention is followed, the transmission control method will be performed in the electronic device which communicates with a server apparatus. The transmission control method includes a step of repeatedly reproducing one specified first data among a plurality of first data reproducible in the electronic device, and the electronic device during the reproduction of the specified first data. Inquiring to the server device at a predetermined time interval whether there is second data to be transmitted to the server, and if the second data exists in the server device, the second data Receiving from the server device, and changing a predetermined time interval. The second data includes an instruction for designating first data different from the first data being reproduced among the plurality of first data. The transmission control method further includes a step of shortening a predetermined time interval as time passes.

  If the further another situation of this invention is followed, the transmission control method will be performed in the electronic device which communicates with a server apparatus. The transmission control method includes a step of repeatedly reproducing one specified first data among a plurality of first data reproducible in the electronic device, and the electronic device during the reproduction of the specified first data. Inquiring to the server device whether there is second data to be transmitted to the server, and, if the second data exists in the server device, receiving the second data from the server device With. The second data includes an instruction for designating first data different from the first data being reproduced among the plurality of first data. The transmission control method further includes a step of making an inquiry at a timing earlier by a predetermined time than a timing at which the first data being reproduced ends.

  If the further another situation of this invention is followed, a program will control the electronic device which communicates with a server apparatus. The program repeatedly reproduces one designated first data out of a plurality of first data that can be reproduced in the electronic device, and the electronic device performs the reproduction during the reproduction of the designated first data. Inquiring to the server device at a predetermined time interval whether there is second data to be transmitted, and when the second data exists in the server device, the second data is sent to the server A step of receiving from the apparatus and a step of changing a predetermined time interval are executed by the processor of the electronic device. The second data includes an instruction for designating first data different from the first data being reproduced among the plurality of first data. The program further causes the processor to execute a step of shortening a predetermined time interval as time passes.

  If the further another situation of this invention is followed, a program will control the electronic device which communicates with a server apparatus. The program repeatedly reproduces one designated first data out of a plurality of first data that can be reproduced in the electronic device, and the electronic device performs the reproduction during the reproduction of the designated first data. Inquiring of the server apparatus whether there is second data to be transmitted, and receiving the second data from the server apparatus when the second data exists in the server apparatus. , To execute the processor of the electronic device. The second data includes an instruction for designating first data different from the first data being reproduced among the plurality of first data. The program further causes the processor to execute an inquiry step at a timing earlier than a timing at which the first data being reproduced ends by a predetermined time.

  According to the present invention, even when an instruction to switch reproducible data such as moving image data is made near the end of data reproduction, other data can be reproduced in the next display cycle.

1 is a diagram for explaining an outline of a system configuration of a communication system 1. FIG. FIG. 6 is a diagram for explaining a moving image display switching timing in the electronic signboard 100. It is a figure for demonstrating the timing of the polling by the electronic signage. It is a figure showing the management table D4 which prescribes | regulates a polling interval. 2 is a diagram showing a hardware configuration of an electronic signboard 100. FIG. 2 is a diagram illustrating a hardware configuration of a server device 200. FIG. 2 is a diagram illustrating a hardware configuration of a mobile terminal 300. FIG. 4 is a functional block diagram for explaining a functional configuration of the electronic signboard 100. FIG. 3 is a sequence chart showing an example of a processing flow in the communication system 1. 3 is a flowchart for explaining a flow of processing of the electronic signboard 100. It is a figure for demonstrating the timing of the polling by the electronic signboard 100A. It is a functional block diagram for demonstrating the functional structure of 100 A of electronic signboards. It is a flowchart for demonstrating the flow of a process of 100 A of electronic signboards. It is a figure for demonstrating the timing of the polling by the electronic signboard 100B. It is a functional block diagram for demonstrating the functional structure of the electronic signboard 100B. It is a flowchart for demonstrating the flow of a process of the electronic signboard 100B. It is a figure for demonstrating the timing of the polling by the electronic signage 100C. It is a figure showing the management table D18 which prescribes | regulates a polling interval. It is a functional block diagram for demonstrating the functional structure of the electronic signboard 100C. It is a flowchart for demonstrating the flow of a process of 100 C of electronic signboards.

  The communication system according to each embodiment of the present invention will be described below with reference to the drawings. In the following description, the same reference numerals are assigned to the same members. Their names and functions are also the same. Therefore, detailed description thereof will not be repeated.

[Embodiment 1]
<A. System configuration>
FIG. 1 is a diagram for explaining the outline of the system configuration of the communication system 1. With reference to FIG. 1, the communication system 1 includes an electronic signboard 100, a server device 200, and a mobile terminal 300. Each of the electronic signboard 100 and the portable terminal 300 is connected to the server device 200 so as to be communicable. The portable terminal 300 remotely operates the electronic signage 100 via the server device 200.

  The electronic signboard 100 is an electronic device that displays electronic information. The electronic signboard 100 functions as a display device capable of displaying still image data, moving image data, and data drawn or reproduced in a time table as electronic information. Examples of data drawn or reproduced in the time table include vector data such as Flash (registered trademark) and SVG (Scalable Vector Graphics), and programs such as HTML5 (HyperText Markup Language 5) and Java (registered trademark) Script. The data generated in is mentioned.

  More specifically, the electronic signboard 100 displays various contents such as advertisements. The electronic signboard 100 is also referred to as digital signage or information display. Hereinafter, a case where the electronic signboard 100 displays a moving image will be described as an example.

  Unless the electronic signboard 100 receives a predetermined instruction (for example, a channel switching instruction described later) from the server device 200, the electronic signboard 100 repeatedly reproduces the same moving image. The electronic signboard 100 inquires of the server apparatus 200 at a predetermined time interval whether or not data to be transmitted to the electronic signboard 100 exists in the server apparatus 200. That is, the electronic signboard 100 inquires of the server device 200 whether there is a transmission request. Hereinafter, this inquiry is referred to as “polling”.

  The portable terminal 300 is an electronic device such as a smartphone, a tablet terminal, or a laptop personal computer. The mobile terminal 300 receives various instructions from the user of the communication system 1. For example, the mobile terminal 300 receives a channel switching instruction (user input) for switching channels. The portable terminal 300 can transmit various data such as a channel switching instruction to the server device 200 by logging in to the server device 200.

  The server device 200 stores moving image data (content) uploaded from the mobile terminal 300. The server device 200 transmits the moving image data to the electronic signboard 100. In this case, the electronic signboard 100 stores the received moving image data. Further, the server device 200 receives a channel switching instruction from the mobile terminal 300.

  More specifically, the server device 200 can transmit various types of information (control data, moving image data) to the electronic signboard 100 by receiving polling. For example, the server device 200 transmits control data for controlling the operation of the electronic signboard 100 as a response to the polling received from the electronic signboard 100 after receiving the channel switching instruction from the mobile terminal 300. The server device 200 transmits the channel switching instruction received from the portable terminal 300 to the electronic sign 100 as the control data.

  When the electronic signboard 100 receives a channel switching instruction from the server device 200, the electronic signboard 100 switches a moving image at a timing described later.

  FIG. 2 is a diagram for explaining the moving image display switching timing in the electronic signboard 100. Referring to FIG. 2, electronic signboard 100 changes from server device 200 to channel 2 (2ch) at a certain time (time t1) when video A associated with channel 1 (1ch) is repeatedly displayed. Is received. In this case, the electronic signboard 100 starts to repeatedly display the moving image B after the display of the moving image A ends. In other words, the electronic signboard 100 does not display another moving image (playback of moving image data) even if it receives an instruction to display another moving image until the currently reproduced moving image ends.

  In the above description, the portable terminal 300 is described as an example of the device constituting the communication system 1, but the device is not necessarily limited to the portable type. Instead of the portable terminal 300, a desktop computer may be used.

  Hereinafter, the moving image displayed by reproducing the moving image data α is also referred to as “moving image A”. Furthermore, a moving image displayed by reproducing the moving image data β is referred to as “moving image B”, and a moving image displayed by reproducing the moving image data γ is referred to as “moving image C”.

  In addition, hereinafter, in order to simplify the description, a case where the electronic signboard 100 has already downloaded a plurality of moving image data α, β, γ, and the like from the server device 200 will be described. That is, in the following, description will be given mainly focusing on the situation where the server device 200 transmits control data instead of moving image data for polling.

<B. Outline of processing>
FIG. 3 is a diagram for explaining the timing of polling by the electronic signboard 100. Referring to FIG. 3, for example, when reproduction of moving image data α (display of moving image A) is started, electronic signboard 100 performs control to shorten the polling time interval with the passage of time. For example, when the time required to reproduce the moving image data α is 60 seconds (when one display cycle is 60 seconds), the electronic signboard 100 performs the following processing as an example.

  The electronic signboard 100 performs polling twice at intervals of 10 seconds after the first polling. The electronic signboard 100 performs polling 10 times at intervals of 3 seconds when 20 seconds have passed since the first polling (that is, when polling at intervals of 10 seconds is completed twice). Furthermore, when 50 seconds elapse from the first polling (that is, when polling at intervals of 3 seconds ends 10 times), the electronic signboard 100 performs polling 10 times at intervals of 1 second.

  When the reproduction (one reproduction) of the moving image data α is completed, the electronic signboard 100 performs control for changing the polling interval as described above for the next reproduction (repetitive reproduction) of the moving image data α.

  FIG. 4 shows a management table D4 that defines the polling interval. Referring to FIG. 4, in management table D4, the length of a moving image (the time required for playback), the number of 10-second intervals, the number of 3-second intervals, and the number of 1-second intervals are stored in association with each other. ing. The electronic signboard 100 changes the polling interval based on the length of the moving image to be reproduced and the management table D4. For example, when the length of the moving image A is 60 seconds, the electronic signboard 100 is described with reference to FIG. 3 by setting the number of 10-second intervals to 2, the number of 3-second intervals to 10, and the number of 1-second intervals to 10 times. Perform the polling process. The management table D4 is an example, and the table used by the electronic signboard 100 when performing the polling interval is not limited to this. For example, the table may be configured for each moving image data in addition to the time required for reproduction.

  As described above, the electronic signboard shortens the polling interval with the passage of time when the reproduction of the moving image data (that is, the display of the moving image) is started. Therefore, even when the moving image data switching instruction (channel switching instruction) is made near the end of the moving image data reproduction (the end of the moving image), the electronic signboard 100 does not change the other display cycle. Moving image data can be reproduced.

<C. Hardware configuration>
Next, typical hardware configurations of the electronic signboard 100, the server device 200, and the mobile terminal 300 will be described.

(C1. Electronic signboard 100)
FIG. 5 is a diagram illustrating a hardware configuration of the electronic signboard 100. Referring to FIG. 5, the electronic signboard 100 includes, as main components, a CPU 151 that executes a program, a ROM 152 that stores data in a nonvolatile manner, data generated by executing a program by the CPU 151, or an input device (see FIG. 5). RAM 153 that stores data input via the volatile memory, HDD 154 that stores data in a nonvolatile manner, switch 156, communication IF (Interface) 157, power supply circuit 158, and monitor 159. Including. Each component is connected to each other by a data bus.

  The power supply circuit 158 is a circuit that steps down the voltage of the commercial power received via the outlet and supplies power to each part of the electronic signboard 100. The switch 156 is a main power switch for switching whether or not to supply power to the power circuit 158 and other various push button switches. The monitor 159 is a device for displaying various reproducible data (moving image data, still image data, etc.) so as to be visible to the user. The communication IF 157 performs data transmission / reception processing in order to communicate with the server apparatus 200. The reproducible data received by the communication IF 157 can be displayed on the monitor 159.

  The processing in the electronic signboard 100 is realized by each hardware and software executed by the CPU 151. Such software may be stored in the HDD 154 in advance. The software may be stored in other storage media and distributed as a program product. Alternatively, the software may be provided as a program product that can be downloaded by an information provider connected to the so-called Internet. Such software is read from the storage medium by the reading device or downloaded via the communication IF 157 or the like and then temporarily stored in the HDD 154. The software is read from the HDD 154 by the CPU 151 and stored in the RAM 153 in the form of an executable program. CPU 151 executes the program.

  Each component constituting the electronic signboard 100 shown in the figure is a general one. Therefore, it can be said that the essential part of the present invention is the RAM 153, the HDD 154, software stored in a storage medium, or software downloadable via a network. In addition, since the operation | movement of each hardware of the electronic signboard 100 is known, detailed description is not repeated.

  The recording medium is not limited to a DVD-RAM, and a fixed program such as a semiconductor memory such as a DVD-ROM, a CD-ROM, an FD, a hard disk, a magnetic tape, a cassette tape, an optical disk, an EEPROM, and a flash ROM is supported. It may be a medium for The recording medium is a non-temporary medium that can be read by the computer. The program here includes not only a program directly executable by the CPU but also a program in a source program format, a compressed program, an encrypted program, and the like.

(C2. Server device 200)
FIG. 6 is a diagram illustrating a hardware configuration of the server device 200. Referring to FIG. 6, server apparatus 200 includes, as main components, CPU 251 that executes a program, ROM 252 that stores data in a nonvolatile manner, data generated by execution of the program by CPU 251, or an input device (see FIG. 6). (Not shown) RAM 253 for storing data volatilely, HDD 254 for storing data in a nonvolatile manner, LED 255, switch 256, communication IF (Interface) 257, power supply circuit 258, monitor 259 and operation keys 260. Each component is connected to each other by a data bus.

  The power supply circuit 258 is a circuit that steps down the voltage of the commercial power received via the outlet and supplies power to each part of the server device 200. The switch 256 is a main power switch for switching whether or not to supply power to the power circuit 258 and other various push button switches. The monitor 259 is a device for displaying various data.

  The communication IF 257 performs processing for transmitting data to the electronic signboard 100 and processing for receiving data transmitted from the electronic signboard 100, processing for transmitting data to the portable terminal 300, and processing for receiving data transmitted from the portable terminal 300.

  The LED 255 is various display lamps that indicate the operating state of the server device 200. For example, the LED 255 represents an on or off state of the main power supply of the server apparatus 200, a read or write state to the HDD 254, and the like. The operation key 260 is a key (keyboard) used for the user of the server device 200 to input data to the server device 200.

  The processing in the server device 200 is realized by each hardware and software executed by the CPU 251. Such software may be stored in the HDD 254 in advance. The software may be stored in other storage media and distributed as a program product. Alternatively, the software may be provided as a program product that can be downloaded by an information provider connected to the so-called Internet. Such software is read from the storage medium by a reading device or downloaded via the communication IF 257 or the like and then temporarily stored in the HDD 254. The software is read from the HDD 254 by the CPU 251 and stored in the RAM 253 in the form of an executable program. The CPU 251 executes the program.

  Each component which comprises the server apparatus 200 shown by the figure is a general thing. Therefore, it can be said that the essential part of the present invention is RAM 253, HDD 254, software stored in a storage medium, or software that can be downloaded via a network. Since the operation of each hardware of server device 200 is well known, detailed description will not be repeated.

  The recording medium is not limited to a DVD-RAM, and a fixed program such as a semiconductor memory such as a DVD-ROM, a CD-ROM, an FD, a hard disk, a magnetic tape, a cassette tape, an optical disk, an EEPROM, and a flash ROM is supported. It may be a medium for The recording medium is a non-temporary medium that can be read by the computer. The program here includes not only a program directly executable by the CPU but also a program in a source program format, a compressed program, an encrypted program, and the like.

(C3. Mobile terminal 300)
FIG. 7 is a diagram illustrating a hardware configuration of the mobile terminal 300. Referring to FIG. 7, mobile terminal 300 includes an antenna 351, an RF (Radio Frequency) circuit 352, a baseband circuit 353, a GPS receiver 354, an application processor 355 that executes a program, and a ROM (Read Only). Memory) 356, RAM (Random Access Memory) 357, NAND flash memory 358, touch screen 359, camera 367, microphone 361, speaker 362, and operation key 363 for receiving an instruction input by the user. , A communication IF (Interface) 364, an IC (Integrated Circuit) card reader / writer 365, and a power supply unit 366.

  The GPS receiver 354 includes an antenna 3541, an RF circuit 3542, and a baseband circuit 3543. The GPS receiver 354 receives a GPS satellite signal using the antenna 3541. Further, the GPS receiver 354 outputs processing results (that is, current location information) in the RF circuit 3542 and the baseband circuit 3543 to the application processor 355. The current location information is information indicating latitude, longitude, and altitude.

  The antenna 351, the RF circuit 352, and the baseband circuit 353 are used for wireless communication with another mobile terminal, a fixed telephone, and a PC (Personal Computer) via a base station. Specifically, the antenna 351, the RF circuit 352, and the baseband circuit 353 are used for the mobile terminal 300 to perform communication using a mobile phone network.

  The flash memory 358 is a nonvolatile semiconductor memory. The flash memory 358 volatilely stores various programs for controlling the mobile terminal 300, and various data such as data generated by the mobile terminal 300 and data acquired from an external device of the mobile terminal 300.

  The components 353 to 359 and 361 to 367 are connected to each other by a data bus. A memory card 3651 is attached to the IC card reader / writer 365.

  Processing in the portable terminal 300 is realized by software executed by each hardware and the application processor 355. Such software may be stored in advance in the flash memory 358. The software may be stored in a memory card 3651 or other storage medium and distributed as a program product. Alternatively, the software may be provided as a program product that can be downloaded by an information provider connected to the so-called Internet. Such software is read from the storage medium by an IC card reader / writer 365 or other reader, or downloaded via the antenna 351, the RF circuit 352, the baseband circuit 353, or the communication IF 364, Once stored in the flash memory 358. The software is read from the flash memory 358 by the application processor 355 and further stored in the flash memory 358 in the form of an executable program. The application processor 355 executes the program.

  Each component which comprises the portable terminal 300 shown by the same figure is a general thing. Therefore, it can be said that an essential part of the present invention is software stored in a flash memory 358, a memory card 3651, or other storage medium, or software that can be downloaded via a network. In addition, since the operation | movement of each hardware of the portable terminal 300 is known, detailed description is not repeated.

  The recording medium is not limited to DVD-ROM, CD-ROM, FD, and hard disk, but is fixed such as semiconductor memory such as magnetic tape, cassette tape, optical disk, optical card, mask ROM, EPROM, EEPROM, and flash ROM. A medium carrying a program may be used. The recording medium is a non-temporary medium that can be read by the computer. The program here includes not only a program directly executable by the CPU but also a program in a source program format, a compressed program, an encrypted program, and the like.

<D. Functional configuration>
FIG. 8 is a functional block diagram for explaining the functional configuration of the electronic signboard 100. With reference to FIG. 8, the electronic signboard 100 includes a storage unit 111, an inquiry unit 112, a reception unit 113, a reproduction unit 114, and a change unit 115. The playback unit 114 includes a buffer processing unit 1141.

  The storage unit 111 stores a management table D4 (FIG. 4) and a plurality of moving image data α, β, γ,. Each moving image data α, β, γ is associated with a channel. Further, each moving image data α, β, γ is added with information representing the time required for reproduction (length of moving image).

  The reproducing unit 114 repeatedly reproduces one designated moving image data among the plurality of moving image data α, β, γ. The designation is performed by the channel number. The buffer processing unit 1141 performs buffer processing for reproducing moving image data. For example, focusing on a certain situation, when the next moving image data is reproduced, the buffer processing unit 1141 performs buffer processing in order to start the reproduction.

  The inquiry unit 112 performs polling. That is, the inquiry unit 112 inquires of the server apparatus 200 at a predetermined time interval Ta whether there is data to be transmitted to the electronic signboard 100. More specifically, whether or not there is data to be transmitted to the electronic signboard 100 (hereinafter also referred to as “transmission target data Dz”) even during reproduction of the designated moving image data. Is inquired of the server apparatus 200 at predetermined time intervals.

  When the transmission target data Dz exists in the server device 200, the reception unit 113 receives the transmission target data from the server device 200. The transmission target data Dz includes either moving image data or control data for controlling the operation of the electronic signboard 100. The transmission target data Dz includes, as control data, an instruction for designating moving image data different from the moving image data being reproduced among the plurality of moving image data. That is, the transmission target data Dz includes an instruction for switching the channel (channel switching instruction).

  The changing unit 115 changes the above-described predetermined time interval Ta. Specifically, the changing unit 115 changes the inquiry interval. More specifically, during the reproduction of designated moving image data, the polling interval is shortened as time passes.

  In addition, when the receiving unit 113 receives a channel switching instruction, the electronic signboard 100 transmits a confirmation response indicating that the channel switching instruction has been received to the server device 200.

  As described above, the electronic signboard 100 shortens the polling interval to the server device 200 as the reproduction of moving image data (that is, the display of moving images) proceeds. Therefore, as described above, the electronic signboard 100 displays the next display even when the moving image data switching instruction (channel switching instruction) is made near the end of the reproduction of the moving image data (the end of the moving image). In this cycle, other moving image data can be reproduced.

  Further, the notification based on the confirmation response is transmitted from the server device 200 to the mobile terminal 300, so that the user of the mobile terminal 300 (in other words, the user of the communication system 1) has received the channel switching instruction from the electronic signboard 100. I can recognize that. In particular, since the polling interval is shortened as the reproduction of moving image data proceeds, the time during which the electronic signboard 100 is in the state where the channel switching instruction is stored in the server apparatus 200 without being transmitted to the electronic signboard 100 is shortened. can do. Therefore, according to the electronic signboard 100, the user of the mobile terminal 300 can shorten the time from when the channel switching instruction is transmitted to the server device 200 until the notification based on the confirmation response is received. This also applies to Embodiments 3 to 7 described later.

<E. Control structure>
FIG. 9 is a sequence chart showing an example of the flow of processing in the communication system 1. The following description will be given on the assumption that the electronic signboard 100 reproduces moving image data.

  Referring to FIG. 9, in sequence SQ <b> 2, electronic signboard 100 polls server apparatus 200. In sequences SQ4 and SQ6, electronic signboard 100 polls server apparatus 200 at intervals of Ta seconds. Ta seconds is, for example, 10 seconds. In sequences SQ10 and SQ18, electronic signboard 100 polls server apparatus 200 at intervals of Tb seconds. Tb seconds are, for example, 3 seconds. Further, in sequences SQ20 and S22, electronic signboard 100 polls server apparatus 200 at intervals of Tc seconds. Tc seconds are, for example, 1 second.

  In sequence SQ8, portable terminal 300 transmits a channel switching instruction based on the user operation to server device 200. The process of sequence SQ8 is a process after sequence SQ6 and before sequence SQ10.

  In sequence SQ12, when server apparatus 200 receives a channel switching instruction from portable terminal 300, server apparatus 200 transmits the channel switching instruction to electronic signboard 100 in response to polling after the reception. In sequence SQ14, the electronic signboard 100 transmits a confirmation response indicating that the channel switching instruction has been received to the server device 200. In sequence SQ <b> 16, server apparatus 200 transmits a notification based on the confirmation response to portable terminal 300. The user of the mobile terminal 300 can recognize that the electronic signboard 100 has received a channel switching instruction from the notification.

  FIG. 10 is a flowchart for explaining the flow of processing of the electronic signboard 100. Referring to FIG. 10, in step S2, electronic signboard 100 confirms the length of the moving image to be reproduced. Specifically, the CPU 151 of the electronic signboard 100 confirms the length of the moving image to be reproduced based on the information added to the moving image data and representing the time required for reproduction. In step S <b> 4, the electronic signage 100 starts playing the designated moving image. In step S6, the electronic signboard 100 starts polling at intervals of Ta seconds.

  In step S <b> 8, the electronic signboard 100 determines whether or not the channel switching instruction transmitted by the server device 200 has been received. If electronic signboard 100 determines that a channel switching instruction has been received (YES in step S8), it transmits a confirmation response to server apparatus 200 in step S10. When electronic signboard 100 determines that a channel switching instruction has not been received (NO in step S8), the process proceeds to step S14.

  In step S10, the electronic signboard 100 temporarily stores the designated channel (for example, 2ch). Note that the order of confirmation response and channel storage may be reversed. In step S <b> 14, the electronic device determines whether or not the polling at Ta second intervals is equal to or more than the specified number of times Ka. In the example of FIG. 3, Ta is 10 seconds and Ka is 2 times.

  If electronic signboard 100 determines that the number is Ka times or more (YES in step S14), in step S16, polling is started at an interval of Tb seconds shorter than Ta seconds. That is, the polling interval is changed. If electronic signboard 100 determines that the number is less than Ka times (NO in step S14), the process proceeds to step S8.

  In step S <b> 18, the electronic signboard 100 determines whether or not the channel switching instruction transmitted by the server device 200 has been received. If electronic signboard 100 determines that a channel switching instruction has been received (YES in step S18), it transmits a confirmation response to server apparatus 200 in step S20. If electronic signboard 100 determines that a channel switching instruction has not been received (NO in step S18), the process proceeds to step S24.

  In step S22, the electronic signboard 100 temporarily stores the designated channel (for example, 2ch). In step S24, the electronic device determines whether or not polling at intervals of Tb seconds is equal to or more than the specified number of times Kb. In the example of FIG. 3, Tb is 3 seconds and Kb is 10 times.

  When electronic signboard 100 determines that the number of times is Kb or more (YES in step S24), in step S26, polling is started at intervals of Tc seconds shorter than Tb seconds. That is, the polling interval is changed. When electronic signboard 100 determines that the number is less than Kb times (NO in step S24), the process proceeds to step S18.

  In step S28, the electronic signboard 100 determines whether or not the channel switching instruction transmitted by the server device 200 has been received. If electronic signboard 100 determines that a channel switching instruction has been received (YES in step S28), it transmits a confirmation response to server apparatus 200 in step S30. If electronic signboard 100 determines that a channel switching instruction has not been received (NO in step S28), the process proceeds to step S34.

  In step S30, the electronic signboard 100 temporarily stores the designated channel (for example, 2ch). In step S34, the electronic device determines whether or not polling at intervals of Tc seconds is equal to or more than the specified number of times Kc. In the example of FIG. 3, Tc is 1 second and Kc is 10 times.

  When it is determined that the electronic signboard 100 is Kc times or more (YES in step S34), in step S36, the electronic signboard 100 sets the moving picture corresponding to the channel stored last as the moving picture to be reproduced next. . When electronic signboard 100 determines that the number is less than Kc times (NO in step S34), the process proceeds to step S28. Note that the electronic signboard 100 repeatedly reproduces the same moving image when the channel switching instruction has not been received.

[Embodiment 2]
In the present embodiment, a description will be given of a configuration in which an electronic signboard makes an inquiry (polling) to the server apparatus 200 at a timing earlier than a timing at which moving image data being reproduced ends by a predetermined time. Since the configuration of the communication system in the present embodiment is the same as that in Embodiment 1 (see FIG. 1), description of the configuration of the communication system will not be repeated here. Moreover, since the hardware configuration of the electronic signboard in the present embodiment is the same as the hardware configuration of electronic signboard 100 in Embodiment 1 (FIG. 5), description thereof will not be repeated here. In order to distinguish the electronic signboard of the present embodiment from the electronic signboard 100 of the first embodiment, hereinafter, the electronic signboard of the present embodiment is referred to as “electronic signboard 100A”.

<F. Outline of processing>
FIG. 11 is a diagram for explaining the timing of polling by the electronic signboard 100A. Referring to FIG. 11, electronic billboard 100A performs polling at a predetermined polling interval (for example, 10 seconds) when reproduction of moving image data α (display of moving image A) is started, for example. Also, the electronic signboard 100A makes an inquiry (polling) to the server device 200 at a timing earlier by a predetermined time Tz than the timing at which the reproduction of the moving image data α ends. The time Tz is a margin time determined for polling.

  In the electronic signboard 100A, the time Tz is determined in advance as follows. When the electronic signboard 100A reproduces the next moving image data, the buffer processing unit 1141 needs to perform buffer processing in order to start the reproduction. For example, when the electronic signboard 100A reproduces moving image data β different from the moving image data α being reproduced, it is necessary to perform buffer processing in order to start reproduction of the different moving image data β. The electronic signboard 100A sets the time Tz to the buffer processing capability (spec of the electronic signboard 100A) of the electronic signboard 100A and the length of time available for moving image data (the length of the moving image (for example, 60 seconds)). Based on the prescribed time. The time Tz will be specifically described as follows.

  The time Tz is a time for preparing a buffer for starting reproduction, that is, a load time for prefetching a moving image, and is determined according to the capacity (that is, length) of the moving image to be reproduced. However, since the load process is dependent on hardware, a coefficient of Expression (1) described later is set according to the specifications of the electronic signboard 100A.

Tz = Ts × K + C (1)
Ts, K, and C are as follows.

Ts: Time of video length K: Constant determined according to the specifications of the electronic signboard C: Acceptable time As described above, the explanation is based on the assumption that the moving image data has already been downloaded to the electronic signboard 100A. Is doing. In such a case, K and C may be determined by experiment or may be determined by a logical operation.

  If no moving image data has been downloaded, Tz calculated using Ts as the maximum value of the length of a moving image (limited by the specification) that can be processed by the electronic signboard 100A may be used.

  As described above, in the electronic signboard 100A, the electronic signboard 100A polls the server device 200 at a timing earlier by a predetermined time Tz than the timing at which the reproduction of the moving image data ends. Therefore, even when the moving image data switching instruction (channel switching instruction) is made near the end of the moving image data reproduction (the end of the moving image), the electronic signboard 100A does not change the other display cycle. Moving image data can be reproduced.

<G. Functional configuration>
FIG. 12 is a functional block diagram for explaining a functional configuration of the electronic signboard 100A. Referring to FIG. 12, electronic signboard 100A includes a storage unit 111A, an inquiry unit 112A, a reception unit 113, and a reproduction unit 114.

  The storage unit 111A stores time Tz and a plurality of moving image data α, β, γ,. Each moving image data α, β, γ is associated with a channel. Further, each moving image data α, β, γ is added with information representing the time required for reproduction (length of moving image).

  As described above, the reproducing unit 114 repeatedly reproduces one designated moving image data among the plurality of moving image data α, β, γ. The designation is performed by the channel number.

  The inquiry unit 112A performs polling. That is, the inquiry unit 112A inquires of the server device 200 whether there is data to be transmitted to the electronic signboard 100A. Specifically, even during the reproduction of the specified moving image data, the inquiry unit 112A inquires of the server apparatus 200 whether or not the transmission target data Dz exists with respect to the electronic signboard 100A. More specifically, the inquiry unit 112A polls the server device 200 at a predetermined time interval Ta. The inquiring unit 112A further polls the server device 200 at a timing earlier by a predetermined time Tz than the timing at which the reproduction of moving image data ends.

  As described above, when the transmission target data Dz exists in the server device 200, the reception unit 113 receives the transmission target data (for example, a channel switching instruction) from the server device 200.

  In addition, when the receiving unit 113 receives a channel switching instruction, the electronic signboard 100A transmits a confirmation response indicating that the channel switching instruction has been received to the server device 200.

<H. Control structure>
FIG. 13 is a flowchart for explaining the flow of processing of the electronic signboard 100A. In FIG. 13, the same processes as those in FIG. 10 are denoted by the same step numbers. For this reason, description of the same processing as that of FIG. 10 will not be repeated here.

  Referring to FIG. 13, in step S102 after steps S2 and S4, electronic signboard 100A determines whether or not Tz seconds before reproduction of moving image data ends, using a timer. If electronic signboard 100A determines that it is Tz seconds ago (YES in step S102), it performs polling in step S104. If electronic signboard 100A determines that it is not Tz seconds ago (NO in step S102), it performs a series of processes in steps S6 and S8 or steps S6, S8, S10, and S12 and advances the process to step S102 again.

  In step S106, the electronic signboard 100A determines whether or not the channel switching instruction transmitted by the server device 200 has been received. When electronic signboard 100A determines that a channel switching instruction has been received (YES in step S106), it transmits a confirmation response to server apparatus 200 in step S108. If electronic signboard 100A determines that it has not received a channel switching instruction (NO in step S106), it advances the process to step S36. In step S110, the electronic signboard 100 temporarily stores the designated channel (for example, 2ch).

[Embodiment 3]
In the present embodiment, as described in the first embodiment, the electronic signboard shortens the inquiry interval (polling interval) to the server apparatus 200 as the reproduction of moving image data (that is, the display of moving images) proceeds. . In the present embodiment, as described in the second embodiment, the electronic signboard is sent to the server device at a timing earlier by a predetermined time than the timing at which the moving image data being reproduced ends. A configuration for making an inquiry (polling) will be described.

  Since the configuration of the communication system in the present embodiment is the same as that in Embodiment 1 (see FIG. 1), description of the configuration of the communication system will not be repeated here. Moreover, since the hardware configuration of the electronic signboard in the present embodiment is the same as the hardware configuration of electronic signboard 100 in Embodiment 1 (FIG. 5), description thereof will not be repeated here. In order to distinguish the electronic signboard of the present embodiment from the electronic signboard 100 of the first embodiment and the electronic signboard 100A of the second embodiment, hereinafter, the electronic signboard of the present embodiment is referred to as “electronic signboard 100B”. Called.

<I. Outline of processing>
FIG. 14 is a diagram for explaining the timing of polling by the electronic signboard 100B. Referring to FIG. 14, electronic signboard 100 </ b> B, for example, starts reproduction of moving image data α (display of moving image A), and performs control to shorten the polling time interval with the passage of time. Furthermore, the electronic signboard 100B polls the server device 200 at a timing earlier by a predetermined time Tz than the timing at which the reproduction of the moving image data α ends.

  For example, when the time required to reproduce the moving image data α is 60 seconds and the time Tz is 4.5 seconds, the electronic signboard 100B performs the following processing as an example. The electronic signboard 100B performs polling twice at intervals of 10 seconds after the first polling. The electronic signboard 100B performs polling 10 times at intervals of 3 seconds when 20 seconds have elapsed since the first polling (that is, when polling at intervals of 10 seconds is completed twice). Furthermore, the electronic signboard 100B starts polling at intervals of 1 second when 50 seconds have elapsed since the first polling (that is, when polling at intervals of 3 seconds is finished 10 times). As described above, when the time Tz is 4.5 seconds, polling is performed five times at intervals of one second, and then polling is performed again after 0.5 seconds. After the second polling and before the next reproduction (that is, during time t4 to t5), the electronic signboard 100B may perform polling or may not perform as shown in FIG. .

  As described above, since the electronic signboard 100B shortens the polling interval to the server device 200 as the reproduction of moving image data proceeds, the moving image data switching instruction (channel switching instruction) ends the reproduction of moving image data. Even when it is performed in the vicinity (at the end of the moving image), other moving image data can be reproduced in the next display cycle. In addition, the electronic signboard 100B polls the server device at a timing earlier than a timing at which the moving image data being reproduced ends by a predetermined time. Therefore, with respect to the transmission timing of the channel switching instruction, a time zone in which display switching can be performed in the next cycle can be set longer than that of the electronic signboard 100 according to the first embodiment.

<J. Functional configuration>
FIG. 15 is a functional block diagram for explaining a functional configuration of the electronic signboard 100B. Referring to FIG. 15, electronic signboard 100B includes a storage unit 111B, an inquiry unit 112B, a reception unit 113, a reproduction unit 114, and a change unit 115.

  The storage unit 111B stores a management table D4 (see FIG. 4), a time Tz, and a plurality of moving image data α, β, γ,. Each moving image data α, β, γ is associated with a channel. Further, each moving image data α, β, γ is added with information representing the time required for reproduction (length of moving image).

  As described above, the reproducing unit 114 repeatedly reproduces one designated moving image data among the plurality of moving image data α, β, γ. The designation is performed by the channel number.

  The inquiry unit 112B performs polling. That is, the inquiry unit 112B inquires of the server device 200 whether there is data to be transmitted to the electronic signboard 100B. Specifically, even during the reproduction of the specified moving image data, the inquiry unit 112B inquires of the server apparatus 200 whether or not the transmission target data Dz exists with respect to the electronic signboard 100. More specifically, the inquiry unit 112B starts polling the server device 200 at a predetermined time interval Ta. The inquiry unit 112B further polls the server device 200 at a timing earlier by a predetermined time Tz than the timing at which the reproduction of the moving image data ends.

  As described above, the changing unit 115 changes the predetermined time interval Ta. Specifically, the changing unit 115 changes the inquiry interval. More specifically, during the reproduction of designated moving image data, the polling interval is shortened as time passes.

  As described above, when the transmission target data Dz exists in the server device 200, the reception unit 113 receives the transmission target data (for example, a channel switching instruction) from the server device 200.

  In addition, when the receiving unit 113 receives a channel switching instruction, the electronic signboard 100B transmits a confirmation response indicating that the channel switching instruction has been received to the server device 200.

<K. Control structure>
FIG. 16 is a flowchart for explaining the flow of processing of the electronic signboard 100B. In FIG. 16, the same processes as those in FIGS. 10 and 13 are given the same step numbers. Therefore, the description of the same processing as that of FIG. 10 and the processing of FIG. 13 is not repeated here.

  Referring to FIG. 16, electronic signboard 100 </ b> B executes a series of processes of steps S <b> 2 to S <b> 32 described in the first embodiment. After step S32, the electronic signboard 100B executes a series of processes of steps S102 to S110 described in the second embodiment. If a negative determination is made in step S102, the electronic signboard 100B advances the process to step S28. The electronic signboard 100B performs the process of step S36 after step S110.

[Embodiment 4]
In the present embodiment, as described in the first embodiment, the electronic signboard shortens the inquiry interval (polling interval) to the server apparatus 200 as the reproduction of moving image data (that is, the display of moving images) proceeds. . In the present embodiment, as described in the second embodiment, the electronic signboard is sent to the server device at a timing earlier by a predetermined time than the timing at which the moving image data being reproduced ends. A configuration for making an inquiry (polling) will be described.

  The electronic signboard according to the present embodiment uses the time Tz to determine the polling interval at the end of the reproduction of moving image data (the end of the moving image), and the polling interval at the end is determined in advance. This is different from the electronic signboard 100B according to the third embodiment.

  Since the configuration of the communication system in the present embodiment is the same as that in Embodiment 1 (see FIG. 1), description of the configuration of the communication system will not be repeated here. Moreover, since the hardware configuration of the electronic signboard in the present embodiment is the same as the hardware configuration of electronic signboard 100 in Embodiment 1 (FIG. 5), description thereof will not be repeated here. In order to distinguish the electronic signboard of the present embodiment from the electronic signboards 100, 100A, and 100B of the first, second, and third embodiments, hereinafter, the electronic signboard of the present embodiment is referred to as “electronic signboard 100C”. .

<L. Outline of processing>
FIG. 17 is a diagram for explaining the timing of polling by the electronic signboard 100C. Referring to FIG. 17, electronic signboard 100 </ b> C, for example, starts reproduction of moving image data α (display of moving image A), and performs control to shorten the polling time interval with the passage of time. Furthermore, the electronic signboard 100C polls the server apparatus 200 at a timing that is earlier by a predetermined time Tz than the timing at which the reproduction of the moving image data α ends.

  For example, when the time required for reproducing the moving image data α is 60 seconds and the time Tz is 4.6 seconds, the electronic signboard 100C performs the following processing as an example.

  The electronic signboard 100C determines a polling interval at the end of the moving image with reference to a management table D18 (FIG. 18) described later. Specifically, the electronic signboard C divides a value (5.4 seconds) obtained by subtracting the time Tz (= 4.6 seconds) from the last 10 seconds by a predetermined natural number. At this time, a natural number is used such that the quotient resulting from the division is smaller than the polling interval (10-second interval, 3-second interval) shown in the management table D18. For example, the electronic signboard 100C uses, for example, “3” as a natural number, and sets 1.8 seconds obtained by dividing 5.4 seconds by 3 as the final polling interval.

  As a result, the electronic signboard 100C performs the following polling. The electronic signboard 100C performs polling twice at intervals of 10 seconds after the first polling. The electronic signboard 100C performs polling 10 times at intervals of 3 seconds when 20 seconds have elapsed since the first polling (that is, when polling at intervals of 10 seconds is completed twice). Furthermore, when 50 seconds elapse from the first polling (that is, when polling at intervals of 3 seconds is finished 10 times), the electronic signboard 100C performs polling 3 times at intervals of 1.8 seconds.

  FIG. 18 is a diagram showing a management table D18 that defines a polling interval. Referring to FIG. 18, the management table D18 directly defines the polling interval between the beginning and the middle of the moving image. Specifically, in the management table D18, the length of a moving image (required time for reproduction), the number of 10-second intervals, and the number of 3-second intervals are stored in association with each other. The electronic signboard 100C changes the polling interval as described above based on the length of the moving image to be reproduced, the management table D18, and the time Tz. The management table D18 is an example, and the table used by the electronic signboard 100C when performing the polling interval is not limited to this.

  It should be noted that the terms of the beginning, the middle, and the end of the moving image are used as indices related to the progress of the moving image, and each may be the same time or may not be the same time as in the present embodiment. This point is the same in other embodiments.

  As described above, since the electronic signboard 100C shortens the polling interval to the server device 200 as the reproduction of moving image data proceeds, the moving image data switching instruction (channel switching instruction) ends the reproduction of moving image data. Even when it is performed in the vicinity (at the end of the moving image), other moving image data can be reproduced in the next display cycle. In addition, the electronic signboard 100C polls the server apparatus at a timing that is earlier than the timing when the moving image data being reproduced ends by a predetermined time. Therefore, with respect to the transmission timing of the channel switching instruction, a time zone in which display switching can be performed in the next cycle can be set longer than that of the electronic signboard 100 according to the first embodiment.

<M. Functional configuration>
FIG. 19 is a functional block diagram for explaining a functional configuration of the electronic signboard 100C. Referring to FIG. 19, electronic signboard 100 </ b> C includes a storage unit 111 </ b> C, an inquiry unit 112 </ b> C, a reception unit 113, a reproduction unit 114, and a change unit 115.

  The storage unit 111C stores a management table D18 (see FIG. 18), a time Tz, and a plurality of moving image data α, β, γ,. Each moving image data α, β, γ is associated with a channel. Further, each moving image data α, β, γ is added with information representing the time required for reproduction (length of moving image).

  As described above, the reproducing unit 114 repeatedly reproduces one designated moving image data among the plurality of moving image data α, β, γ. The designation is performed by the channel number.

  The inquiry unit 112C performs polling. That is, the inquiry unit 112C inquires of the server device 200 whether there is data to be transmitted to the electronic signboard 100C. Specifically, even during the reproduction of the specified moving image data, the inquiry unit 112C inquires of the server apparatus 200 whether or not the transmission target data Dz exists with respect to the electronic signboard 100. More specifically, the inquiry unit 112C starts polling the server device 200 at a predetermined time interval Ta. The inquiry unit 112C further polls the server device 200 at a timing earlier by a predetermined time Tz than the timing at which the reproduction of the moving image data ends. Further, the inquiry unit 112C uses the management table D18 to determine a polling interval at the end of the moving image. The inquiry unit 112C performs polling at the determined polling interval at the end of the moving image.

  The changing unit 115 changes the predetermined time interval Ta with reference to the management table D18. Specifically, the changing unit 115 changes the inquiry interval. More specifically, during the reproduction of designated moving image data, the polling interval is shortened as time passes.

  As described above, when the transmission target data Dz exists in the server device 200, the reception unit 113 receives the transmission target data (for example, a channel switching instruction) from the server device 200.

  In addition, when the receiving unit 113 receives a channel switching instruction, the electronic signboard 100 </ b> C transmits a confirmation response indicating that the channel switching instruction has been received to the server device 200.

<N. Control structure>
FIG. 20 is a flowchart for explaining the flow of processing of the electronic signboard 100C. In FIG. 20, the same processes as those in FIG. 10 are denoted by the same step numbers. For this reason, description of the same processing as that of FIG. 10 will not be repeated here.

  Referring to FIG. 20, electronic signboard 100 </ b> C executes a series of processes in steps S <b> 2 to S <b> 24 described in the first embodiment. After the step S24, the electronic signboard 100C calculates a polling interval Td shorter than Tb by dividing the time obtained by subtracting the time Tz from the remaining time of the moving image by a predetermined natural number.

  In step S204, the electronic signboard 100C starts polling at intervals of Td seconds. In step S <b> 206, the electronic signboard 100 </ b> C determines whether or not the channel switching instruction transmitted by the server device 200 has been received. When electronic signboard 100C determines that a channel switching instruction has been received (YES in step S206), it transmits a confirmation response to server apparatus 200 in step S208. When electronic signboard 100C determines that a channel switching instruction has not been received (NO in step S206), the process proceeds to step S36. In step S210, the electronic signboard 100C temporarily stores the designated channel (for example, 2ch).

[Embodiment 5]
In the first to fourth embodiments, the configuration in which the mobile terminal 300 transmits a channel switching instruction to the server device 200 when the mobile terminal 300 is in a login state with respect to the server device 200 has been described.

  However, the present invention is not limited to this, and communication is performed so that the mobile terminal 300 transmits a channel switching instruction to the server apparatus 200 even if the mobile terminal 300 has not performed processing such as authentication on the server apparatus 200. The system 1 may be configured.

[Embodiment 6]
In the first embodiment, the configuration in which the polling interval is shortened with the lapse of the playback time of the moving image data using the management table D4 in which the change mode of the polling interval is defined has been described as an example. Is not to be done. The electronic signboard 100 calculates a plurality of different polling intervals and the number of polling times performed at each polling interval so that the polling interval is shortened from the beginning, middle and end of the movie according to the time of the movie. May be. This is the same in the third, fourth, and fifth embodiments.

[Embodiment 7]
In the first embodiment, the description has been given focusing on the case where the server apparatus 200 transmits control data instead of moving image data for polling. However, it is not limited to this. Even in a configuration in which the server apparatus 200 transmits (distributes) other moving image data as a moving image to be displayed next in response to polling from the electronic signage 100 while the electronic signage 100 is reproducing moving image data, As in the first embodiment, the polling interval to the server device 200 may be shortened as the reproduction of moving image data (that is, the display of moving images) proceeds.

  That is, the configuration of the electronic signboard may be as follows. The electronic signboard communicates with the server device. The electronic signboard includes a storage unit that stores first moving image data. The electronic signboard includes a reproducing unit that repeatedly reproduces one designated moving image data. The electronic signboard determines whether or not there is data to be transmitted to the electronic signboard when reproducing the first moving image data as the designated one moving image data. A query unit for querying the server device 200 is provided. The electronic signboard includes a receiving unit that receives data from the server device 200 when data exists in the server device 200. The electronic signboard further includes a changing unit that changes a predetermined time interval. The data includes second moving image data different from the first moving image data being reproduced, and an instruction for reproducing the second moving image data. The changing unit shortens the predetermined time interval as time passes.

[Embodiment 8]
In the above description, the case where the electronic signboard reproduces moving image data has been described as an example. However, the present invention is not limited to this. For example, if the electronic signboard is configured so that it cannot display other still images unless a still image is displayed for a predetermined time (for example, 60 seconds), the content of the above-described processing is changed to that of the still image data. It can also be applied to playback (displaying still images).

  In addition to the image data such as the moving image data described above, the data that can be reproduced by the electronic signboard may be audio data (including music data).

<< Summary >>
(1) Electronic signboards 100, 100B, and 100C that are electronic devices communicate with server device 200. The electronic signboards 100, 100B, and 100C include storage units 111, 111B, and 111C that store a plurality of first data (for example, moving image data) that can be reproduced on the electronic signboards 100, 100B, and 100C, and a plurality of first signs. Among the data, a reproduction unit 114 that repeatedly reproduces one designated first data, and a second to be transmitted to the electronic signboards 100, 100B, and 100C during reproduction of the designated first data. Inquiries 112, 112B, and 112C that inquire the server apparatus 200 at predetermined time intervals as to whether or not data exists, and when the second data exists in the server apparatus 200, the second data Is received from the server device 200, and a changing unit 115 that changes a predetermined time interval. The second data includes an instruction for designating first data different from the first data being reproduced among the plurality of first data. The changing unit 115 shortens the predetermined time interval with the passage of time.

  According to the above configuration, the electronic signage 100, 100B, 100C shortens the inquiry interval (polling interval) to the server device 200 as the reproduction of the first data (for example, display of a moving image) proceeds. Therefore, the electronic signboards 100, 100B, and 100C can be used even when an instruction to switch to different first data (channel switching instruction) is made near the end of the reproduction of the first data (for example, at the end of the moving image). In the next display cycle, the different first data can be reproduced.

  (2) The inquiry units 112B and 112C of the electronic signboards 100B and 100C make an inquiry at a timing earlier by a predetermined time than the timing at which the first data being reproduced ends in the configuration of (1) above. To do.

  According to the above configuration, the electronic signboards 100B and 100C perform the display switching of the moving image in the next cycle with respect to the transmission timing of the instruction for designating the first data different from the first data being reproduced. Can be set longer than the configuration in which the inquiry is not performed at an earlier timing by the predetermined time.

  (3) Electronic signboards 100A, 100B, and 100C, which are electronic devices, communicate with server device 200. The electronic signboards 100A, 100B, and 100C include storage units 111A, 111B, and 111C that store a plurality of first data (for example, moving image data) that can be reproduced on the electronic signboards 100A, 100B, and 100C, and a plurality of first signs. Among the data, there is a reproducing unit 114 that repeatedly reproduces one designated first data, and second data to be transmitted to the electronic signboard 100 during reproduction of the designated first data. Inquiries 112A, 112B, and 112C that inquire about whether or not the server device 200 is present, and a reception unit 113 that receives the second data from the server device 200 when the second data exists in the server device 200, Is provided. The second data includes an instruction for designating first data different from the first data being reproduced among the plurality of first data. Inquiries 112A, 112B, and 112C make an inquiry at a timing earlier by a predetermined time than the timing at which the first data being reproduced ends.

  According to the above configuration, the electronic signboards 100A, 100B, and 100C have the server signs 200A, 100B, and 100C at the timing earlier than the timing at which the reproduction of the first data ends by a predetermined time Tz. Is inquired (polled). Therefore, in the electronic signboards 100A, 100B, and 100C, even when an instruction to switch to different first data (channel switching instruction) is made near the end of reproduction of the first data (for example, at the end of the moving image). In the next display cycle, the different first data can be reproduced.

  (4) Inquiries 112B and 112C of electronic signboards 100B and 100C are the first to be transmitted to electronic signboards 100B and 100C during the reproduction of the designated first data in the configuration of (3) above. The server apparatus 200 is inquired at a predetermined time interval whether or not the second data exists. The electronic signboards 100B and 100C further include a changing unit that changes a predetermined time interval. The changing unit 115 shortens the predetermined time interval with the passage of time.

  According to the above configuration, since the inquiry interval becomes shorter as the reproduction of the first data proceeds, the electronic signboards 100B and 100C transmit the instruction to switch to different first data to the electronic signboards 100B and 100C. In other words, it is possible to shorten the time in which the server apparatus 200 is in a state of being accumulated. Therefore, according to the electronic signboards 100B and 100C, the time from when the user who sent the switching instruction (the user of the portable terminal 300) transmits the switching instruction to the server device 200 until receiving the notification based on the confirmation response. Can be shortened.

  (5) When the electronic signboards 100A, 100B, 100C reproduce the first data different from the first data being reproduced in the configurations of (2) to (4) above, the reproduction of the different first data is performed. Is further provided with a buffer processing unit 1141 that performs buffer processing to start the process. The timing that is earlier by a predetermined time is the timing that is earlier by the time specified based on the buffer processing capability of the electronic signboards 100A, 100B, and 100C and the length of the reproduction time of the first data.

  According to the above configuration, even when a switching instruction (channel switching instruction) to different first data is made near the end of reproduction of the first data (for example, at the end of the moving image), By the cycle, the different first data can be buffered. Therefore, the electronic signboards 100A, 100B, and 100C can reproduce the different first data in the next display cycle.

  (6) In the above configurations (1) to (5), the first data is moving image data. Therefore, the electronic signboards 100A, 100B, and 100C can apply the above processing to switching of moving image data.

  (7) The communication system 1 includes a server device 200 and electronic signboards 100, 100B, and 100C that communicate with the server device 200. The electronic signboards 100, 100B, and 100C store a plurality of first data (for example, moving image data) that can be reproduced on the electronic signboards 100, 100B, and 100C, and are designated among the plurality of first data. One first data is repeatedly reproduced. The electronic signboards 100, 100B, and 100C are servers that determine whether or not there is second data to be transmitted to the electronic signboard 100 during reproduction of the designated first data at predetermined time intervals. Queries the device 200. Based on the inquiry, when the second data exists, the server device 200 transmits the second data to the electronic signboards 100, 100B, 100C. The electronic signboards 100, 100B, and 100C receive the second data from the server device 200, and change a predetermined time interval. The second data includes an instruction for designating first data different from the first data being reproduced among the plurality of first data. The electronic signboards 100, 100B, and 100C shorten a predetermined time interval with the passage of time.

  According to the above configuration, the electronic signage 100, 100B, 100C shortens the inquiry interval (polling interval) to the server device 200 as the reproduction of the first data (for example, display of a moving image) proceeds. Therefore, the electronic signboards 100, 100B, and 100C can be used even when an instruction to switch to different first data (channel switching instruction) is made near the end of the reproduction of the first data (for example, at the end of the moving image). In the next display cycle, the different first data can be reproduced.

  (8) The communication system 1 includes a server device 200 and electronic signboards 100A, 100B, and 100C that communicate with the server device 200. The electronic signboards 100A, 100B, and 100C store a plurality of first data (for example, moving image data) that can be reproduced on the electronic signboards 100A, 100B, and 100C, and the designated one of the plurality of first data is specified. The first data is repeatedly reproduced. The electronic signboards 100A, 100B, and 100C indicate to the server apparatus 200 whether or not there is second data to be transmitted to the electronic signboards 100A, 100B, and 100C during the reproduction of the designated first data. Inquire about it. Based on the inquiry, when the second data exists, the server device 200 transmits the second data to the electronic signboards 100A, 100B, and 100C. The electronic signboards 100A, 100B, and 100C receive the second data from the server device 200. The second data includes an instruction for designating first data different from the first data being reproduced among the plurality of first data. The electronic signboard 100 makes an inquiry at a timing earlier by a predetermined time than the timing at which the first data being reproduced ends.

  According to the above configuration, the electronic signboards 100A, 100B, and 100C have the server signs 200A, 100B, and 100C at the timing earlier than the timing at which the reproduction of the first data ends by a predetermined time Tz. Is inquired (polled). Therefore, in the electronic signboards 100A, 100B, and 100C, even when an instruction to switch to different first data (channel switching instruction) is made near the end of reproduction of the first data (for example, at the end of the moving image). In the next display cycle, the different first data can be reproduced.

  (9) The transmission control method is executed in the electronic signboards 100, 100B, and 100C that communicate with the server device 200. The transmission control method includes a step of repeatedly reproducing one specified first data among a plurality of first data (for example, moving image data) reproducible on the electronic signboards 100, 100B, and 100C. A step of inquiring the server device 200 at a predetermined time interval whether there is second data to be transmitted to the electronic signboards 100, 100B, 100C during the reproduction of the first data. And when 2nd data exists in the server apparatus 200, the step which receives 2nd data from the server apparatus 200, and the step which changes a predetermined time interval are provided. The second data includes an instruction for designating first data different from the first data being reproduced among the plurality of first data. The transmission control method further includes a step of shortening a predetermined time interval as time passes.

  According to the above configuration, the electronic signage 100, 100B, 100C shortens the inquiry interval (polling interval) to the server device 200 as the reproduction of the first data (for example, display of a moving image) proceeds. Therefore, the electronic signboards 100, 100B, and 100C can be used even when an instruction to switch to different first data (channel switching instruction) is made near the end of the reproduction of the first data (for example, at the end of the moving image). In the next display cycle, the different first data can be reproduced.

  (10) The transmission control method is executed in the electronic signboards 100A, 100B, and 100C that communicate with the server device 200. The transmission control method includes a step of repeatedly reproducing one specified first data among a plurality of first data (for example, moving image data) reproducible on the electronic signboards 100A, 100B, and 100C. During the reproduction of the first data, the server device 200 is inquired whether there is second data to be transmitted to the electronic signboards 100A, 100B, and 100C. Receiving the second data from the server device 200 when the second data exists. The second data includes an instruction for designating first data different from the first data being reproduced among the plurality of first data. The transmission control method further includes a step of making an inquiry at a timing earlier by a predetermined time than a timing at which the first data being reproduced ends.

  According to the above configuration, the electronic signboards 100A, 100B, and 100C have the server signs 200A, 100B, and 100C at the timing earlier than the timing at which the reproduction of the first data ends by a predetermined time Tz. Is inquired (polled). Therefore, in the electronic signboards 100A, 100B, and 100C, even when an instruction to switch to different first data (channel switching instruction) is made near the end of reproduction of the first data (for example, at the end of the moving image). In the next display cycle, the different first data can be reproduced.

  (11) The program controls the electronic signboards 100, 100B, 100C communicating with the server device 200. The program repeatedly reproduces one designated first data out of a plurality of first data (for example, moving image data) reproducible on the electronic signs 100, 100B, 100C, and a designated first data. Inquiring to the server apparatus 200 at a predetermined time interval whether or not there is second data to be transmitted to the electronic signboards 100, 100B, and 100C during reproduction of one data; When the second data is present in the server device 200, the steps of receiving the second data from the server device 200 and changing the predetermined time interval are performed by the processors of the electronic signboards 100, 100B, 100C ( CPU 151). The second data includes an instruction for designating first data different from the first data being reproduced among the plurality of first data. The program further causes the processor to execute a step of shortening a predetermined time interval as time passes.

  According to the above configuration, the electronic signage 100, 100B, 100C shortens the inquiry interval (polling interval) to the server device 200 as the reproduction of the first data (for example, display of a moving image) proceeds. Therefore, the electronic signboards 100, 100B, and 100C can be used even when an instruction to switch to different first data (channel switching instruction) is made near the end of the reproduction of the first data (for example, at the end of the moving image). In the next display cycle, the different first data can be reproduced.

  (12) The program controls the electronic signboards 100A, 100B, 100C communicating with the server device 200. The program repeatedly reproduces one designated first data among a plurality of first data (for example, moving image data) reproducible on the electronic signboards 100A, 100B, 100C, and a designated first data. A step of inquiring the server apparatus 200 whether or not there is second data to be transmitted to the electronic signboards 100A, 100B, and 100C during the reproduction of the first data; When data exists, the processor (CPU 151) of the electronic signboards 100A, 100B, and 100C executes the step of receiving the second data from the server device 200. The second data includes an instruction for designating first data different from the first data being reproduced among the plurality of first data. The program further causes the processor to execute an inquiry step at a timing earlier than a timing at which the first data being reproduced ends by a predetermined time.

  According to the above configuration, the electronic signboards 100A, 100B, and 100C have the server signs 200A, 100B, and 100C at the timing earlier than the timing at which the reproduction of the first data ends by a predetermined time Tz. Is inquired (polled). Therefore, in the electronic signboards 100A, 100B, and 100C, even when an instruction to switch to different first data (channel switching instruction) is made near the end of reproduction of the first data (for example, at the end of the moving image). In the next display cycle, the different first data can be reproduced.

  The embodiment disclosed this time is an exemplification, and the present invention is not limited to the above contents. The scope of the present invention is defined by the terms of the claims, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  1 communication system, 100, 100A, 100B, 100C electronic signboard, 111, 111A, 111B, 111C storage unit, 112, 112A, 112B, 112C inquiry unit, 113 reception unit, 114 playback unit, 115 change unit, 151, 251 CPU, 152,252 ROM, 153,253 RAM, 154,254 HDD, 200 server device, 300 portable terminal, D4, D18 management table.

Claims (7)

An electronic device that communicates with a server device,
Storage means for storing a plurality of first data reproducible in the electronic device;
Reproducing means for repeatedly reproducing one designated first data among the plurality of first data;
Inquiries to the server device at predetermined time intervals as to whether there is second data to be transmitted to the electronic device during reproduction of the designated first data Means,
Receiving means for receiving the second data from the server device when the second data is present in the server device;
Changing means for changing the predetermined time interval,
The second data includes an instruction for designating first data different from the first data being reproduced among the plurality of first data,
The changing device is an electronic device that shortens the predetermined time interval with the passage of time.   The electronic device according to claim 1, wherein the inquiry unit makes the inquiry at a timing earlier than a timing at which the first data being reproduced ends by a predetermined time. The electronic device is
In the case of reproducing first data different from the first data being reproduced, further comprising buffer processing means for performing buffer processing to start reproduction of the different first data,
A timing earlier by the time said predetermined, the the length and timing earlier by a predetermined time on the basis of the playback time of power and the first data in the buffer processing of the electronic device, according to claim 2 Electronics. It said first data is moving image data, the electronic device according to any one of claims 1 to 3. A communication system comprising a server device and an electronic device that communicates with the server device,
The electronic device is
Storing a plurality of first data that can be reproduced in the electronic device;
Of the plurality of first data, one designated first data is repeatedly reproduced,
Inquiries to the server device at predetermined time intervals as to whether there is second data to be transmitted to the electronic device during reproduction of the designated first data,
When the second data exists based on the inquiry, the server device transmits the second data to the electronic device,
The electronic device is
Receiving the second data from the server device;
Changing the predetermined time interval;
The second data includes an instruction for designating first data different from the first data being reproduced among the plurality of first data,
The said electronic device is a communication system which shortens the said predetermined time interval with progress of time. A transmission control method in an electronic device communicating with a server device,
Replaying one designated first data among a plurality of first data reproducible in the electronic device;
Inquiring to the server device at a predetermined time interval whether there is second data to be transmitted to the electronic device during reproduction of the designated first data; ,
Receiving the second data from the server device when the second data exists in the server device;
Changing the predetermined time interval,
The second data includes an instruction for designating first data different from the first data being reproduced among the plurality of first data,
The transmission control method further includes a step of shortening the predetermined time interval as time passes. A program for controlling an electronic device that communicates with a server device,
Replaying one designated first data among a plurality of first data reproducible in the electronic device;
Inquiring to the server device at a predetermined time interval whether there is second data to be transmitted to the electronic device during reproduction of the designated first data; ,
Receiving the second data from the server device when the second data exists in the server device;
Changing the predetermined time interval to the processor of the electronic device,
The second data includes an instruction for designating first data different from the first data being reproduced among the plurality of first data,
The program causes the processor to further execute a step of shortening the predetermined time interval as time passes.

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