JP2005149188A - Content display metho, and content display program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To display news moving pictures distributed one after another by arranging a schedule autonomously on the side of an in-vehicle terminal which has received contents. <P>SOLUTION: The content display method for an information display terminal in an information display system has information display terminals 10-1 and 10-2 mounted inside trains 1-1 and 1-2 and a content server 40 connected via a wireless LAN provided with a station when the train stops at the station. Respective contents distributed by the content server and the update time of a day and a time of the reproduction of the respective contents are stored, and at the time of contents reproduction, in selecting a content to be reproduced, the update time of day selects a new content preferentially, and, a combination of contents which approximates a totaled value of the time for reproducing contents closest to a predetermined reference time is selected. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a content display method and a content display program used for an information display terminal mounted on a public vehicle such as a train or a bus.

In conventional information display systems mounted on public vehicles such as trains and buses, a high-speed wireless LAN system is installed when the content server stops at a public mobile communication network or station from an in-vehicle terminal mounted in the vehicle. Used to distribute information.
As a content display method, the information display terminal displays the content stored in the terminal according to a predetermined schedule.
JPO standard technology collection electronic / net advertisement "digital advertisement distribution system using on-vehicle terminals" http://www.jpo.go.jp/shiryou/s_sonota/hyooujun_gijutsu/net_koukoku/023.html

  In the information display system installed in public vehicles such as current trains and buses, the advertising content already accumulated in the terminal is repeatedly displayed at regular time intervals, but from the user, real-time information (for example, There is a demand for browsing weather forecasts and news). In order to respond to the demand, a method of displaying weather forecasts and news as characters and still images has been performed. In this method, if the display time of the information is determined and a schedule frame for displaying the information is secured, the conventional technique can be used.

However, the following problems arise when trying to circulate the news as a video. That is,
(1) The moving image content has a larger content size than the still image. Therefore, even when using a low-speed public mobile communication network, or when using a high-speed wireless LAN when stopping at a station, it is expected that a time difference will occur before delivery to all trains. That is, it is impossible for the content server side to grasp when the content arrives on the train side.

(2) News videos are difficult to standardize in 15 seconds or 30 seconds like TV commercials, and it is expected that it is difficult to unify the length of each news movie. In other words, the length of each delivered news varies, which means that it is difficult to apply a method in which a schedule frame is secured in advance and applied thereto.

  Due to the above problems, the conventional method of determining the display schedule on the distribution server side, distributing the display schedule to each train, and displaying according to the schedule displays the news that has been distributed on the train. It is difficult to cope with this.

  The present invention has been made in view of such circumstances, and a content display method capable of displaying news videos distributed one after another by creating a schedule autonomously on the in-vehicle terminal side that has received the content, and The object is to provide a content display program.

  In order to achieve the above object, the invention according to claim 1 is a content distribution system in which an information display terminal mounted in a vehicle is connected to the information display terminal via a wireless LAN provided at the station when the vehicle stops at the station. A content display method for an information display terminal in an information display system having a server, wherein each content distributed from the content distribution server and the update time and playback time of each content are stored and played back during content playback When selecting the target content, the content with the newest update time is selected preferentially, and the combination of the content whose total playback time is closest to a predetermined reference time is selected. To do.

  The invention according to claim 2 is an information display terminal mounted in a vehicle and information having a content distribution server connected via a wireless LAN provided at the station when the vehicle stops at the station. A content display method for an information display terminal in a display system, wherein each content distributed from the content distribution server, an evaluation value according to the importance of each content, and a playback time of the content are stored, and played back at the time of content playback When selecting the target content, the content is selected based on the evaluation value based on the importance level of the content and the evaluation value based on the time difference between the total value of the content reproduction times and a predetermined reference time.

  According to a third aspect of the present invention, in the content display method according to the second aspect, the importance of the content decreases with the passage of time.

  According to a fourth aspect of the present invention, in the content display method according to any one of the first to third aspects, the predetermined reference time is an average boarding time.

  The invention according to claim 5 is an information display terminal installed in a vehicle, and a content distribution server connected via a wireless LAN provided at the station when the vehicle stops at the station. A content display program executed by an information display terminal in a display system, the step of storing each content distributed from the content distribution server and the update time and playback time of each content, and a playback target at the time of content playback When selecting the content to be executed, the computer executes the step of preferentially selecting the content whose update time is new and selecting the combination of the content whose total reproduction time is closest to a predetermined reference time. The gist of the content display program is

  The invention according to claim 6 is an information display terminal installed in a vehicle, and a content distribution server connected via a wireless LAN provided at the station when the vehicle stops at the station. A content display program executed by an information display terminal in a display system, the step of storing each content distributed from the content distribution server, an evaluation value depending on the importance of each content, and a content playback time, and content playback Sometimes, when selecting the content to be played, the computer selects the content based on the evaluation value based on the importance of the content and the evaluation value based on the time difference between the total value of the content playback time and a predetermined reference time. The gist of the program is a content display program to be executed.

  The invention described in claim 7 is characterized in that, in the content display program according to claim 6, the importance of the content decreases with the passage of time.

  According to the present invention, when contents are distributed through a wireless LAN to an information display system mounted on a public vehicle, the distribution is performed one after another by creating an autonomous schedule on the in-vehicle terminal side that has received the contents. It is possible to effectively display the news videos to be displayed.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. A configuration of an information display system to which the present invention is applied is shown in FIG. In the figure, the information display system includes a content server 40 that holds content to be distributed, wireless LAN access points 20-1 and 20-2 installed at a station or a stop, a content server 40, and a wireless LAN access point 20-1. , 20-2 and information display terminals 10-1 and 10-2 installed in trains 1-1 and 1-2.

A configuration example of the content server 40 for realizing the embodiment of the present invention is shown in FIG.
The content server 40 includes a communication management unit 400, a storage unit 401, and a content reception unit 402. The content server 40 corresponds to the content distribution server of the present invention.
The communication management unit 400 receives polling from the information display terminals 10-1 and 10-2 and transmits content. The storage unit 401 holds content to be sent to the information display devices 10-1 and 10-2. The content receiving unit 402 receives new content and stores it in the storage unit 401.

  FIG. 3 shows the configuration of the information display terminal 10-1 mounted on the train 1-1 in FIG. The information display terminal 10-2 has the same configuration as the information display terminal 10-1. In the figure, an information display terminal 10-1 includes a wireless LAN antenna 100, a request transmission unit 101, a content reception unit 102, a schedule generation unit 103, a storage unit 104, a content display unit 105, and a display device 106. And have.

When the train 1-1 stops at the station, the wireless LAN antenna 100 establishes communication with the content server 40 through the wireless LAN access points 20-1 and 20-2 installed at the station.
The request transmission unit 101 transmits a request to the content server 40 when communication with the content server 40 is established. The content receiving unit 102 receives content from the content server 40.

  The schedule generation unit 103 newly generates a schedule when new content is received. The storage unit 104 stores the content received from the content server 40. The content display unit 105 displays the content on the display device 106 according to the schedule generated by the schedule generation unit 103.

The processing sequence between the content server 40 and the information display terminal 10-1 from arrival at a certain station until departure is shown in FIGS.
As a first embodiment of the content display method of the present invention, it is shown how a schedule is generated when new content arrives.
The request transmission unit 101 of the information display terminal 10-1 bowls through the wireless LAN antenna 100 whether or not a wireless LAN session is established at regular intervals (S101, S102). Judge that it has arrived.

When the train 1-1 on which the information display terminal 10-1 is mounted arrives at the A station where the wireless LAN access point 20-1 is installed, the request transmission unit 101 of the information display terminal 10-1 previously connected with the content server 40. The time (13:10) at which communication is established is held, and the time is transmitted to the content server 40 (S103).
The communication management unit 400 of the content server 40 searches the storage unit 401 for a content list updated after that time from the received time.

  The contents of the storage unit 401 are shown in FIG. As a result, the difference in the content list including the content d-01 updated at time 13:15 is searched and transmitted to the information display terminal 10-1 (S104). In this case, since the content to be transmitted is only the content d-01 (S105), the information display terminal 10-1 transmits “d-01” that is the ID of the content d-01 to the content server (S106). , S107, S109). Then, the information display terminal 10-1 receives the content d-01 (S110).

When the content reception is completed while the station A is stopped (S112), the distribution completion flag in the storage unit 104 is updated (S115). The contents of the storage unit 47 are shown in FIG. The next content is received (S105). However, since there is no content to be received (S106), the display schedule is reorganized (S114).
As a reorganization method of the display schedule, for example, there is a method of using the average boarding time as a reference. If the average boarding time is 9 minutes, the schedule generation unit 103 generates a schedule in which the content reproduction is completed in 9 minutes.

  In the present embodiment, before the content d-01 is received, the content is repeated on a schedule of 9 rounds in a round of a-01 → b-01 → c-01. Here, since the content d-01 has arrived, the schedule is reorganized. In the case of the present embodiment, since the importance of all contents is the same, the contents are removed from the schedule of content reproduction in the oldest order. Then, a schedule in which the round trip time of the content reproduction schedule is closest to the average boarding time is adopted.

  In the present embodiment, the content a-01 is removed from the schedule, and the content reproduction order is b-01 → c-01 → d-01, but one round is 10 minutes. Therefore, if the content b-01 is removed and a candidate c-01 → d-01 is made, the whole cycle is 6 minutes 50 seconds. Taking the difference from the average boarding time, the former is 1 minute and the latter is 2 minutes 10 seconds, so the former schedule is adopted.

  When the schedule is reorganized, the content display unit 105 is notified and playback is started with a new schedule. However, even if the content a-01 is played back at that time, the content display unit 105 is not interrupted. Then, playback is performed to the end, and when playback of the content b-01 is started, the process shifts to a new schedule (schedule not including the content a-01).

  Further, in this embodiment, when the departure of the content d-01 is not completed while the station A is stopped, the distribution completion flag of the content d-01 does not become True. Content whose delivery completion flag is not true is not eligible to enter the schedule. In this case, the schedule is not reorganized and the schedule a-01 → b-01 → c-01 is maintained until the next station. .

As a second embodiment of the content display method of the present invention, it will be shown how a schedule is generated when contents of different importance arrive from the content server 40.
It is assumed that the transmission of the content d-01 is completed in the same situation as in the first embodiment. However, it is assumed that the importance of the content a-01 is 1 (high). The contents of the storage unit 104 are shown in FIG. In this case, the schedule was a-01 → b-01 → c-01, but when content d-01 is added to it, the old content is deleted, but content a-01 is important. Assume that the importance is set to 1 for news.
Therefore, the content b-01 is first removed from the schedule, and a schedule a-01 → c-01 → d-01 is generated.

  There is a problem of how long content with high importance will be played back, but this can be solved by setting a rule so that the importance decreases one by one after a certain period of time. For example, if the importance decreases by 1 after 2 hours, the content a-01 will have an importance of 3 at 14:55. If higher content is distributed, it will be out of schedule.

As a third embodiment of the content display method of the present invention, it will be shown how a schedule is generated when content having the same ID arrives.
Assume that content a-02, which is update information of content a-Ol, arrives in the same situation as in the first embodiment, not content d-01. The contents of the storage unit 104 are shown in FIG. An example of such content is the progress in the middle of a sport. When updated content arrives, the value of the previous content is lost.
In this case, the schedule of a-01 → 01 → c-01 is changed to a schedule of a-02 → b-01 → c-01 when the distribution of the content a-02 is completed.

This is a method for switching the schedule when content a-01 is being played back. When the content a-01 is played back, the content a-01 is interrupted and playback of the content a-02 is interrupted. There is a way to get started.
There is also a method of using the former and the latter depending on the importance of the contents a-01 and a-02. If the contents a-01 and a-02 are important news, focus on promptness and immediately stop and play the latest contents a-02, but if not so important, play the contents a-Ol This means that the schedule is switched after the process is completed.

  In addition, the content display program for realizing the function of the information display terminal shown in FIGS. 4 and 5 is recorded on a computer-readable recording medium, and the program recorded on the recording medium is read into a computer system. You may make it perform.

  This content display program displays information in an information display system having an information display terminal mounted in a vehicle and a content distribution server connected via a wireless LAN provided at the station when the vehicle stops at the station. A content display program executed by a terminal, the step of storing each content distributed from the content distribution server and the update time and playback time of each content, and selecting the content to be played back during content playback In this case, there is a step of preferentially selecting content having a new update time and selecting a combination of content whose total reproduction time of content is closest to a predetermined reference time.

  The content display program is an information display system having an information display terminal mounted in a vehicle and a content distribution server connected via a wireless LAN provided at the station when the vehicle stops at the station. A content display program executed by an information display terminal, the step of storing each content distributed from the content distribution server, an evaluation value according to the importance of each content, and a playback time of the content, and playback during content playback Selecting content based on the evaluation value based on the importance of the content and the evaluation value based on the time difference between the total value of the reproduction times of the content and a predetermined reference time when selecting the target content.

  The importance of the content is set so as to decrease with the passage of time.

Here, the “computer system” includes an OS and hardware such as peripheral devices. The “computer system” includes a WWW system having a homepage providing environment (or display environment).
The “computer-readable recording medium” refers to a storage device such as a flexible medium, a magneto-optical disk, a portable medium such as a ROM and a CD-ROM, and a hard disk incorporated in a computer system.

  Further, the “computer-readable recording medium” refers to a volatile memory (RAM) in a computer system that becomes a server or a client when a program is transmitted via a network such as the Internet or a communication line such as a telephone line. In addition, those holding programs for a certain period of time are also included.

  The program may be transmitted from a computer system storing the program in a storage device or the like to another computer system via a transmission medium or by a transmission wave in the transmission medium. Here, the “transmission medium” for transmitting the program refers to a medium having a function of transmitting information, such as a network (communication network) such as the Internet or a communication line (communication line) such as a telephone line.

  The program may be for realizing a part of the functions described above. Furthermore, what can implement | achieve the function mentioned above in combination with the program already recorded on the computer system, and what is called a difference file (difference program) may be sufficient.

1 is a block diagram showing a configuration of an information display system to which the present invention is applied. The block diagram which shows the structure of the content server in the information display system shown in FIG. The block diagram which shows the structure of the information display terminal in the information display system shown in FIG. The flowchart which shows the process sequence between the content server and information display terminal in the information display system shown in FIG. The flowchart which shows the process sequence between the content server and information display terminal in the information display system shown in FIG. The figure which shows the content of the storage part of the content server in the information display system shown in FIG. The figure which shows the content of the storage part of the information display terminal in the information display system shown in FIG. The figure which shows the content of the storage part of the information display terminal in the information display system shown in FIG. The figure which shows the content of the storage part of the information display terminal in the information display system shown in FIG.

Explanation of symbols

1-1, 1-2 ... trains 10-1, 10-2 ... information display terminals 20-1, 20-2 ... wireless LAN access point 30 ... network 40 ... content server 100 ... wireless LAN antenna 101 ... request transmission unit 102 ... Content receiver 103 ... Schedule generator 104 ... Accumulator 105 ... Content display 106 ... Display device 400 ... Communication manager 401 ... Accumulator 402 ... Content receiver

Claims (7)

A content display method for an information display terminal in an information display system comprising: an information display terminal mounted in a vehicle; and a content distribution server connected via a wireless LAN provided at the station when the vehicle stops at the station. There,
Store each content distributed from the content distribution server and the update time and playback time of each content,
During content playback, when selecting the content to be played back, the content with the latest update time is preferentially selected, and the combination of the content whose total playback time is closest to the predetermined reference time is selected. A content display method characterized by: A content display method for an information display terminal in an information display system comprising: an information display terminal mounted in a vehicle; and a content distribution server connected via a wireless LAN provided at the station when the vehicle stops at the station. There,
Each content distributed from the content distribution server, an evaluation value according to the importance of each content, and a reproduction time of the content are stored,
When selecting content to be played back during content playback, selecting content based on an evaluation value based on the importance of the content and an evaluation value based on a time difference between a total value of the content playback time and a predetermined reference time A characteristic content display method.   The content display method according to claim 2, wherein the importance of the content decreases with the passage of time.   4. The content display method according to claim 1, wherein the predetermined reference time is an average boarding time. Content executed by an information display terminal in an information display system having an information display terminal mounted in a vehicle and a content distribution server connected via a wireless LAN provided in the station when the vehicle stops at the station A display program,
Storing each content distributed from the content distribution server and the update time and playback time of each content;
During content playback, when selecting the content to be played back, the content with the latest update time is preferentially selected, and the combination of the content whose total playback time is closest to the predetermined reference time is selected. And steps to
Content display program for causing a computer to execute. Content executed by an information display terminal in an information display system having an information display terminal mounted in a vehicle and a content distribution server connected via a wireless LAN provided in the station when the vehicle stops at the station A display program,
Storing each content distributed from the content distribution server, an evaluation value according to importance of each content, and a reproduction time of the content;
Selecting content based on an evaluation value based on the importance of the content and an evaluation value based on a time difference between a total value of the content reproduction times and a predetermined reference time when selecting the content to be reproduced during content reproduction; ,
Content display program for causing a computer to execute.   7. The content display program according to claim 6, wherein the importance level of the content decreases with the passage of time.

Images