JP2001063580A - Information providing system on train - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide information for a wide range of the inside of a train. SOLUTION: A train data server 24 and a rolling stock data relay device 28 are mounted on a train 20. The train data server 24 is furnished with a signal distribution data memory part, so that signal distribution data is transmitted on the radio to the portable information terminal 30 of each passenger from the rolling stock data relay device 28. In this case, signal distribution data in response to a request for signal distribution from the portable information terminal 30, may be replied to the portable information terminal 30.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a train information providing system, and more particularly to a train information providing system capable of providing information to a portable information terminal carried by each passenger.

[0002]

2. Description of the Related Art Conventionally, information display in trains has not been performed much, and the name of the next stop station is displayed above the door, and text information such as news is provided on a liquid crystal display. Or just to stay. In the latter case, some information is optically transmitted from the station to the train at the terminal station, and the information is displayed on a liquid crystal display mounted near the doors for getting on and off. In this way, even in a train, certain information can be provided to passengers, and the passengers can effectively use the boarding time.

[0003]

However, in the prior art, there is a problem that information is provided only in a limited place in the train, and information cannot be provided to many people in the train. Further, in the related art, there is a problem that only predetermined information is uniformly provided on a shared display, and information cannot be provided according to individual passenger requests.

The present invention has been made in view of the above problems, and has as its object to provide information over a wide area in a train by distributing data to portable information terminals carried by passengers. It is an object of the present invention to provide a train information providing system that can be used. Another object of the present invention is to provide an in-train information providing system capable of providing information according to individual passenger requests.

[0005]

In order to solve the above-mentioned problems, the present invention includes a data server and a radio communication device mounted on a train, and transmits information to a portable information terminal carried by a passenger of the train. An in-train information providing system, wherein the data server includes a distribution data storage unit that stores a plurality of distribution data, and the wireless communication device transmits the distribution data stored in the distribution data storage unit to the distribution data storage unit. It is characterized by including wireless transmission means for wirelessly transmitting to the portable information terminal.

[0006] In this case, data is distributed to the portable information terminal carried by the passenger, so that the information is provided to the passenger on the shared display provided in the vehicle. Information can be provided over a wide area.

[0007] The wireless communication device further includes wireless receiving means for wirelessly receiving a data distribution request from the portable information terminal, and the wireless transmitting means transmits distribution data corresponding to the data distribution request to the portable information terminal. May be replied to.

[0008] In this case, each passenger transmits a data distribution request from the portable information terminal to the wireless communication device, so that information is provided in accordance with the request of each passenger. As a result, it is possible to provide information of high value to individual passengers. In addition, the portable information terminal here is
It may be configured as a device dedicated to this system, or may be a portable personal computer, PDA (Personal Data
Assistance), a portable game machine, an electronic organizer, a portable telephone, or other portable general-purpose data processing device.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a diagram showing an overall configuration of a train information providing system according to an embodiment of the present invention. The in-train information providing system 10 shown in FIG. 1 is a system to which the data distribution system and the in-train information providing system according to the present invention are applied.
2 (optical LAN) is laid. A center device 14 and a wayside data server 16 are connected to the wayside LAN 12.

The center device 14 is desirably connected to a line, and is capable of generating all information provided by the train 20. For example, the center device 14 is a digital data of characters, images, music and the like. And so on. Data such as characters generated by the center device 14 is distributed to the wayside data server 16 via the wayside LAN 12.

The railroad data server 16 includes, for example, a train 20
Is provided at each station of the route on which the vehicle travels, and an information transmission device 18 is connected thereto. Then, when the train 20 enters the communication area of the information transmission device 18, data such as characters held by the railroad data server 16 is wirelessly transmitted from the information transmission device 18 to the train 20 in a predetermined procedure. Thus, the train 20 can replenish data such as characters at each passing station, for example.

The train 20 has an information transmission device 22, a train data server 24, a train LAN 26, and a vehicle data relay device (wireless communication device) 28 mounted thereon.

The information transmission device 22 receives data such as characters from the information transmission device 18 installed along the railway. The data such as characters received here is stored in the train data server 24.
Sent to

The train data server 24 is connected to the train LAN 2
6 makes it possible to mutually communicate with a plurality of vehicle data relay devices 28, and autonomously sends data such as characters received from along the railroad to the train LAN 26 as distribution data, and In addition to broadcasting the distribution data (constant distribution data) to the device 28, some of the data (on-demand distribution data) are transmitted in accordance with the data special distribution request from the vehicle data relay device 28 and the train LAN 2
Send to 6.

The vehicle data relay device 28 includes, for example, the train 2
0 is provided in each of the vehicles No. 0. When a data distribution request is received from the portable information terminal 30, the distribution data corresponding to the request is picked up from the constant distribution data transmitted on the train LAN 26. And wirelessly distributes it into the vehicle. Also, the distribution data corresponding to the data distribution request received from the portable information terminal 30 is the in-train L
If it is determined that the distribution data is not included in the constant distribution data transmitted through the AN 26, the data special distribution request is made to the train data server 24 so that the distribution data is specially transmitted to the in-train LAN 26. In response to the data special distribution request, the train data server 24 selects the requested distribution data from the on-demand distribution data, and
When transmitted to the AN 26, the vehicle data relay device 28 wirelessly distributes the distribution data into the vehicle.

The portable information terminal 30 is, for example, arbitrarily carried by a passenger, selects distribution data listed in an information list described later, and relays a data distribution request requesting the selected distribution data to a vehicle data relay. It can be transmitted wirelessly to the device 28. In addition, distribution data wirelessly distributed in response to this request can be selectively received and displayed on a display.

Next, a specific configuration of each device constituting the in-train information providing system 10 will be described.

FIG. 2 is a functional block diagram showing the railroad data server 16. As shown in the figure, the railroad data server 16 is configured to include communication control units 34 and 42 and a distribution data storage unit 40.

The communication control unit 34 is connected to the LAN 12 and receives data such as characters from the center device 14. The data such as characters received by the communication control unit 34 is sent from the communication control unit 34 to the distribution data storage unit 40 and stored as a distribution data group. At this time, each distribution data is provided with a unique information ID. If distribution data with an information ID that has not been received is newly received by the communication control unit 34, the distribution data is stored in the distribution data storage unit. 40 is additionally written.

The communication control unit 42 is connected to the information transmission device 18 and wirelessly transmits a distribution data group stored in the distribution data storage unit 40 to the train 20 using the information transmission device 18. Thus, necessary data is supplied to the train 20 that has entered the communication area of the information transmission device 18. At this time, it is also possible to receive from the train 20 how much data has already been received at the other station and transmit only the difference from the latest data to the train 20 by radio.

FIG. 3 is a functional block diagram showing the train data server 24. As shown in the figure, the train data server 24 includes communication control units 44 and 52, a distribution data storage unit 48, a data distribution unit 50, a channel table storage unit 54, a channel table update unit 56, a timer The configuration includes a calendar unit 58, a train position acquisition unit 60, and an access report acquisition unit 62.

The communication control unit 44 is connected to the information transmission device 22 mounted on the train 20, and transmits the distribution data group stored in the distribution data storage unit 40 on the side of the railway via the information transmission device 22. Receive. The received distribution data group is sent to the distribution data storage unit 48 and stored therein. The distribution data storage unit 48 stores the information list shown in FIG. In this information list, an information ID, information content, and attribute information (not shown) are described for each distribution data. The attribute information is
Geographic attribute information that represents the attributes of the station, time, date,
It includes temporal attribute information indicating attributes relating to days of the week and time, and access level information indicating the level of access to the distribution data. The access frequency information is updated as needed by the access report acquisition unit 62.
That is, in the communication control unit 52, each vehicle data relay device 2
The access report transmitted from the access report acquisition unit 6 is received.
Send to 2. The access report is for each vehicle data relay device 2.
Reference numeral 8 denotes a list of data distribution requests received from the portable information terminal 30 so that it can be understood how many data distribution requests have been made for which distribution data. In addition, each portable information terminal 30 may report to the vehicle data relay device 28 which distribution data each passenger is watching. In this case, each vehicle data relay device 28 sums up the report, creates an access report, and transmits it to the train data server 24 as appropriate. In this way, it is possible to reliably determine which distribution data the passenger is looking at regardless of the presence or absence of the data distribution request. The access report acquisition unit 62 aggregates these access reports,
The access amount information stored in the distribution data storage unit 48 is updated. The access frequency information is, for example, the number of data distribution requests received by all vehicle data relay devices 28 within 30 minutes. Then, the attribute information is used in the channel table updating process in the channel table updating unit 56. The information list shown in the figure is broadcasted to the vehicle data relay device 28 as one of the distribution data.

The data distribution unit 50 distributes the distribution data stored in the distribution data storage unit 48 via the communication control unit 52 based on the channel table stored in the channel table storage unit 54.

The communication control unit 52 is connected to the in-train LAN 26, and performs data communication with the vehicle data relay device 28. At this time, six types of communication channels are provided between the communication control unit 52 and the vehicle data relay device 28, for example, as shown in FIG. Channels LX01 and LX02 are express channels, and if data is distributed on these channels, the same data will be transmitted on the train LAN 26 every other second. This channel is used for distribution of urgent information such as a timetable and transfer information. Channels EX01 to EX10
Is an express channel. When data is distributed through this channel, the same data is transmitted through the train LAN 26 every four seconds. This channel is used, for example, for distribution of station equipment, guide information, newspaper articles, and the like. Channels RP01 to RP10 are high-speed channels,
When data is distributed on this channel, the same data is transmitted on the train LAN 26 every 8 seconds. This channel is used for distribution of, for example, magazine articles. On the other hand, channels ST01 to ST10 are ordinary channels, and in the case of data distribution on this channel, distribution data is transmitted to train LAN 26 after a data special distribution request from vehicle data relay device 28. This channel is used for distribution of books and music data, for example.
Further, the channels TP01 to TP22 are temporary channels. When data distribution is performed using the temporary channels TP01 to TP22, data distribution is performed using another available channel.

FIG. 6 shows an example of the channel table stored in the channel table storage unit 54.
As shown in the figure, the channel table describes the information ID of the distribution data and the channel used for distributing the distribution data in association with each other. An asterisk (*) in front of a channel is an active mark. This active mark is L in the train
Attached to the distribution data being sent to the AN 26. The channel table is sent to the vehicle data relay device 28 using the control channel. The active mark is used for processing in the vehicle data relay device 28.

As described above, if the communication channel between the communication control unit 52 and the vehicle data relay device 28 is different, the repetition frequency of data distribution will be different. Represents the priority for.

The data distribution unit 50 distributes the distribution data stored in the distribution data storage unit to the vehicle data relay device 28 via the communication control unit 52 based on the channel table as shown in FIG. At this time, limited express channels LX01 and LX02 and express channels EX01 to E
X10, the distribution data to which the rapid channels RP01 to RP10 are assigned are transmitted at regular intervals to the train LAN 26.
And is always distributed data. on the other hand,
The distribution data to which the normal channels ST01 to ST10 are allocated is distributed in response to a data special distribution request from the vehicle data relay device 28, and is on-demand distribution data.

FIG. 7 is a diagram for explaining data distribution in each communication channel. As shown in the figure, the basic unit of a communication channel is a slot of about 1 second,
In the limited express channels LX01 and LX02, one or more pieces of distribution data are stored in one slot, and the data is repeatedly transmitted to the train LAN 26 (about every one second). The express channels EX01 to EX10 are channels that use four slots as a set, and a large number of distribution data are stored in the four slots, which are repeatedly (every about every four seconds) transmitted to the train LAN 26. In addition, Rapid Channel RP
01 to RP10 are channels used as a set of eight slots, and a large number of distribution data are stored in eight slots, which are repeatedly (every about every eight seconds) transmitted to the intra-train LAN 26. In the normal channels ST01 to ST10, the channels are occupied according to the data special distribution request. In addition,
If one slot does not contain sufficient distribution data as in the case of the express channel LX02 in the figure, the rest of the slot is allocated to the temporary channels TP01 to TP22.

As described above, the channel is changed for each distribution data based on the channel table, and the data distribution cycle is changed in accordance with the content of the distribution. Although the data is occupied for a long time, the in-train LAN 26 is not occupied so much for the distribution data of low necessity. For this reason, it is possible to efficiently use communication resources and obtain information required by the passenger at a speed corresponding to the type of the information.

The channel table is appropriately updated by a channel table updating unit 56. An information list stored in the distribution data storage unit 48 is supplied to the channel table update unit 56,
In addition, current time information indicating the current time, date, and day of the week is supplied from the timer / calendar section 58, and current position information (which station or between stations) of the train 20 is supplied from the train position acquisition section 60. ing. The train position acquisition unit 60 grasps the position of the train 20 based on data exchange conventionally performed with the station side when the train arrives at each station, for example.

The channel table updating unit 56 updates the channel table based on these information and the attribute information of each distribution data stored in the distribution data storage unit 48. Specifically, when station A is set as the geographical attribute information of certain distribution data, it is determined that the train 20 is far ahead of station A based on the current position information output from the train position acquisition unit 60. Then, the channel rank of the distribution data is reduced to, for example, a normal channel. Then, when approaching Station A, the rank of the channel of the distribution data is raised to, for example, an express channel. Thereafter, when the train 20 passes through the station A, the rank of the channel of the distribution data is lowered. For example, an express channel is dropped to a normal channel. Thus, A
Distribution data that is far less necessary than the station and still has little need, A
After passing through the station, the rank of the channel of the distribution data having little usefulness is lowered, and the distribution data having other necessity or high usefulness can be allocated to the channel having the higher rank. In addition, information indicating that "there is a high necessity at stations A to D" is set as the geographical attribute information of the distribution data, and in that section, the rank of the channel for the distribution data may be increased. it can.

When information indicating “not suitable for rush hour” is set as temporal attribute information of certain distribution data, the current time information output from the timer / calendar unit 58 indicates that the current rush hour , The rank of the channel of the distribution data is lowered. As a result, for example, it is possible to lower the rank of the channel for distribution data that is less necessary during rush hour such as route guidance, and to raise the rank of the channel of other distribution data that is considered to be more necessary during that time. become able to. In addition, information indicating that "the summer vacation (X / X X to X / X X) is not necessary" or "Saturday and Sunday is low necessity" is set as time attribute information of certain distribution data. During the period or the day of the week, the rank of the channel for the distribution data may be lowered.

Further, the channel table updating unit 56 can update the channel table based on the access information among the attribute information stored in the distribution data storage unit 48. For example, when there are many accesses to certain distribution data, it is determined that the demand for the distribution data is large, and the rank of the channel is raised. For example, what was distributed using a normal channel is raised to an express channel. In this way, a channel according to actual demand can be assigned to each piece of distribution data, and passengers can quickly acquire distribution data with a large demand. In addition, if the transition of the access amount is also recorded as the access amount information, the channel table may be updated with some prediction.

Next, FIG. 8 is a functional block diagram showing the vehicle data relay device 28. As shown in the figure, the vehicle data relay device 28 includes communication control units 68 and 76, an access report generation unit 70, a data special distribution request unit 72, a distribution data acquisition unit 74, and a channel table holding unit 78.
And is configured.

The communication controller 68 is connected to the in-train LAN 26, receives distribution data from the train data server 24, and receives a channel table supplied from the train data server 24 using a control channel. Further, it transmits to the train data server 24 the data special distribution request generated by the data special distribution requesting unit 72 and the access report generated by the access report generating unit 70.

On the other hand, the communication control section 76 includes a wireless communication means, and can communicate with the portable information terminal 30. The channel table holding unit 78 holds a channel table received by the communication control unit 68.
Receives the data distribution request from the portable information terminal 30, sends the data distribution request to the data special distribution requesting unit 72 or the distribution data acquiring unit 74 according to the channel table. That is, if the distribution data specified by the received data distribution request is transmitted on an express channel, an express channel, or a rapid channel, it is a request for distribution data at all times. Send it to the acquisition unit 74. On the other hand, if the distribution data specified by the received data distribution request is transmitted on a normal channel, the request is sent to the data special distribution request unit 72 because it requests on-demand distribution data. However, even in the case of on-demand distribution data, if an active mark (*) is added to the channel table and a data special distribution request has already been made by another vehicle data relay device 28, a further data special distribution request is made. The train data L is not transmitted to the other vehicle data relay device 28.
The distribution data acquisition unit 74 acquires the on-demand distribution data sent to the AN 26.

In the distribution data acquisition section 74, the communication control section 7
6, the distribution data specified by the received data distribution request,
The on-demand distribution data returned in response to the data special distribution request from the own or another vehicle data relay device 28 or the in-train LAN 26 is obtained from the constant distribution data being transmitted, and passed to the communication control unit 76. The communication control unit 76 wirelessly distributes the distribution data to the portable information terminal 30. In this case, for example, five types of communication channels are provided between the vehicle data relay device 28 and the portable information terminal 30 as shown in FIG. Among them, channels 1 and 2 are guide channels, and distribution data such as an information list to be distributed without waiting for a data distribution request from the portable information terminal 30 is transmitted using this channel. Channels 3 and 4 are demand channels, and these demand channels are used when distribution data is returned in response to a data distribution request. Channel 5 is a control channel, and is used when a data distribution request is received from the portable information terminal 30. The data distribution request sent from the portable information terminal 30 includes the channel number (3 or 4) used for returning the distribution data, and the communication control unit 76 wirelessly distributes the distribution data according to the channel number. are doing.

When a data distribution request is received from the portable information terminal 30, the information is transmitted to the access report generation unit 70.
Sent to The access report generation unit 70 counts how many data distribution requests have been made for which distribution data, and generates an access report. This access report is attached to a data special distribution request by the data special distribution request unit 72 and sent to the train data server 24 in order to reduce traffic on the train LAN 26. If there is no data special distribution request for a certain time (for example, one minute),
The access report alone is transmitted to the train data server 24. This access report is used for updating the access amount information as described above.

Finally, the portable information terminal 30 will be described. FIG. 10 is a functional block diagram showing the portable information terminal 30. As shown in FIG.
Communication unit 82, control unit 86, operation unit 88, display unit 9
0. The communication unit 82 performs wireless data communication with the vehicle data relay device 28. Also,
The control unit 86 includes a CPU and a memory such as a RAM and a ROM, and controls each unit of the apparatus. Display unit 90
Is configured using, for example, a liquid crystal display, and displays distribution data received from the vehicle data relay device 28 as an image. The operation unit 88 is for performing a data distribution request to the vehicle data relay device 28 by performing a button operation in accordance with the display content on the display unit 90.

The portable information terminal 30 having the above functions is
For example, as shown in FIG. 11A, a PC card slot 112, a CPU 102, a memory 10 such as a RAM and a ROM.
4. Input device 106 such as keyboard and pointing device, output device 10 such as liquid crystal display and speaker
8 and a PC card (PCMCIA card) 116 having a built-in wireless communication function 114 in a PC card slot 112 of a portable general-purpose computer 100 including a hard disk drive device 110. it can. In this case, a program for realizing each function shown in FIG.
Read from the card 116 to the memory 104,
When executed by the PU 102, it becomes possible to receive data distribution from the vehicle data relay device 28.

As shown in FIG. 11B, the system includes a compact card slot 130, a DRAM 122, an input device 124 such as a keyboard and a pointing device, an output device 126 such as a liquid crystal display and a speaker, and a flash memory 128. The wireless communication function 11 is inserted into the compact card slot 130 of the PDA 120
4 may be realized by inserting a compact card 118 having a built-in 4. In this case, a program for realizing each function shown in FIG.
By being executed by U102, data distribution can be received from the vehicle data relay device 28.

Further, as shown in FIG. 11C, a portable game machine 1 including a game cartridge slot 136, a CPU 102, a game controller 138, and an output device 140 such as a liquid crystal display and a speaker.
This may be realized by inserting a game cartridge 132 having a built-in wireless communication function 114 into the 34 game cartridge slots 136. In this case, a program for realizing each function shown in FIG. 10 is stored in the game cartridge 132 in the same manner as in the case of the game program, and is transferred to the memory 104.
02, the vehicle data relay device 28
Will be able to receive data distribution. In addition, each function of the portable information terminal 30 shown in FIG. 10 may be built in a known portable telephone.

FIG. 12 is a flowchart illustrating the operation of portable information terminal 30. As shown in the flow chart, after the portable information terminal 30 is activated, the guide channel 1 (or 2)
Is received (S101). In this case, the reception frequency of the guide channel may be set in advance in a memory included in the control unit 86 (for example, at the time of factory shipment), or may be set in the communication unit 8.
2 (the wireless communication function 114 in FIG. 11) may be set in advance (at the time of factory shipment, etc.). Alternatively, the user may manually set the reception frequency of the guide channel. Thus, the information list broadcasted on the guide channel 1 is obtained (S102). When the information list is received by the communication unit 82, the control unit 86 supplies the information list to the display unit 90, where the information list is displayed. On the other hand, when the passenger selects one of the distribution data included in the information list using the operation unit 88 (S
103), the control unit 86 generates a data distribution request signal (S104). The data distribution request signal includes an information ID of the requested distribution data, a demand channel (3 or 4) from which the distribution data is to be received, an ID assigned to the portable information terminal 30, and information such as a boarding station and a disembarking station of the passenger. Is included. The information of the boarding station and the getting off station is input by the operation unit 88 or is immediately stored in the internal memory.

The data distribution request signal thus generated is transmitted to the vehicle data relay device 28 via the communication unit 82 (S104). Thereafter, the control unit 86 promptly changes the reception channel of the communication unit 82 to the demand channel set in the transmitted data distribution request, and waits for the return of the distribution data (S105). Thereafter, when the distribution data is returned from the vehicle data relay device 28, the communication unit 82 receives the data (S106), and the control unit 86 causes the display unit 9 to return.
Information is displayed using 0 (S107).

The on-train information providing system 10 described above
According to the present invention, since the passengers of the train 20 can receive the required distribution data through the portable information terminal 30, the information can be provided by a liquid crystal display or the like provided above the entrance of the train 20 or the like. In addition, information can be provided in a wide range. In the portable information terminal 30,
Since the distribution data according to the data distribution request is received, the information that each passenger actually wants can be provided, so that attractive information provision can be performed.

The intra-train information providing system 10 described above can be variously modified. For example, the same configuration as the train data server 24 and the vehicle data relay device 28 is arranged in each station premises, and the portable information terminal 30 is also installed in the station premises.
May be provided. In the above description, the railroad data server 16 is arranged at each station.
You may arrange in another place.

[Brief description of the drawings]

FIG. 1 is a diagram showing an overall configuration of an in-train information providing system according to an embodiment of the present invention.

FIG. 2 is a functional block diagram showing a wayside data server.

FIG. 3 is a functional block diagram showing a train data server.

FIG. 4 is a diagram showing an example of an information list.

FIG. 5 is a diagram illustrating types of communication channels between a train data server and a vehicle data relay device.

FIG. 6 is a diagram illustrating an example of a channel table.

FIG. 7 is a diagram illustrating a usage state of a communication channel from a train data server to a vehicle data relay device.

FIG. 8 is a functional block diagram illustrating a vehicle data relay device.

FIG. 9 is a diagram illustrating types of communication channels between the vehicle data relay device and the portable information terminal.

FIG. 10 is a functional block diagram showing a portable information terminal.

FIG. 11 is a diagram illustrating a configuration example of a portable information terminal.

FIG. 12 is a flowchart illustrating the operation of the portable information terminal.

[Explanation of symbols]

10 Information system in train, 12 LAN along railway, 1
4 center equipment, 16 railway data servers, 18, 22
Information transmission device, 20 trains, 24 train data server,
26 LAN within train, 28 Vehicle data relay device, 30
Portable information terminal, 34, 42, 44, 52, 68, 76
Communication control unit, 40, 48 Delivery data storage unit, 50
Data distribution unit, 54 Channel table storage unit, 56
Channel table update unit, 58 timer / calendar unit, 60 train position acquisition unit, 62 access report acquisition unit, 70 access report generation unit, 72 data special distribution request unit, 74 distribution data acquisition unit, 78 channel table holding unit, 82 communication unit , 86 control unit, 88 operation unit, 90 display unit.

Continued on the front page (72) Inventor Michiharu Yukawa 1-13-8 Kamikizaki, Urawa-shi, Saitama Japan Signaling Co., Ltd. Yono Office (72) Inventor Masaki Okada 1-13-8 Kamikizaki, Urawa-shi, Saitama Japan Signal Corporation Yono Works F-term (reference) 5H161 AA01 GG04 GG11 GG22 5K067 AA21 BB04 BB21 BB43 DD24 DD53 EE02 EE12 GG01 GG11 HH23

Claims (2)

[Claims] 1. An on-train information providing system that includes a data server mounted on a train and a wireless communication device and provides information to a portable information terminal carried by a passenger of the train, wherein the data server is And a distribution data storage unit for storing a plurality of distribution data, wherein the wireless communication device wirelessly transmits at least one of the distribution data stored in the distribution data storage unit to the portable information terminal. A train information providing system comprising means. 2. The train information providing system according to claim 1, wherein the wireless communication device further includes wireless receiving means for wirelessly receiving a data distribution request from the portable information terminal, and wherein the wireless transmitting means comprises: An in-train information providing system, wherein distribution data according to a data distribution request is returned to the portable information terminal.