JP4889465B2 - Train-mounted video information distribution and display system - Google Patents

Description

  The present invention relates to a train-mounted video information distribution / display system that provides video information to passengers in a train cabin.

  In conventional train-mounted video information distribution and display systems, so-called real-time information such as news and weather forecasts input wirelessly from ground stations and content data such as emergency messages are distributed and displayed on each train vehicle, The information providing service for passengers was strengthened (for example, see Patent Document 1).

JP 2002-209193 A (paragraph 0036, FIG. 8)

  The system disclosed in Patent Document 1 divides content data such as so-called real-time information such as news and weather forecasts input by radio from a ground station and an emergency message into video image information and still image video information, Each is distributed to a display control device mounted on each vehicle through a separate transmission path and displayed on the display device.

  Therefore, the train-mounted video information distribution and display system can cope with the case where the number of radio inputs from the ground station is single, but when the number of radio inputs from the ground station increases, the information is transferred to each train. There was a problem that could not be displayed on the display device mounted on.

  In addition, since the moving image information is distributed to the display control device mounted on each vehicle using the analog transmission path and displayed on the display device, the display quality of the moving image information is easily affected by noise due to analog transmission. Had a problem to deteriorate.

  The present invention has been made to solve the above-described problem, and provides a train-mounted video information distribution display system capable of displaying desired video information on a display device even when the number of wireless inputs from a ground station is plural. It is intended.

  It is another object of the present invention to provide a train-mounted video information distribution / display system capable of displaying high-quality video images without being affected by deterioration due to transmission lines.

The train-mounted video information distribution / display system according to the present invention is installed in each of a plurality of vehicles constituting one train, and is connected to each other via a digital transmission path to process train information, which is information related to the running state of the train. Train information means for performing, first wireless transmission / reception means for receiving video information including still picture video information and first moving picture video information, and display timing information including display designation date and time from the first ground station; a second radio transceiver means for receiving a second video image information from the ground station of, connected to said one of the train information device, said first video image information from said first wireless transceiver means The first moving image information converted to the high frequency range by converting the second moving image information from the second wireless transmission / reception means to the high frequency range and converting the signal to the high frequency range , and the Either the video image information of the second video image information signal converted into the frequency domain, as well as the distribution output by the analog data signal automatically selected and with a switching control signal based on the display timing information, the Video information distribution means for distributing and outputting still image video information as digital data signals, and the stationary information that is mounted on each of the plurality of vehicles and that is output from the train information means of the vehicle on the first transmission path by the train information means. Display control means for inputting image video information, inputting the moving picture video information output from the video information distribution means via the second transmission path from the video information distribution means, and outputting the video information as predetermined video information; and the display Display means for displaying the video information output from the control means.

  According to the train-mounted video information delivery / display system according to the present invention, there is an effect that desired video information can be displayed on the display device even when the number of wireless inputs from the ground station is plural.

  Exemplary embodiments of a train-mounted video information distribution display system according to the present invention will be described below with reference to the accompanying drawings. Note that the present invention is not limited to these embodiments.

Embodiment 1 FIG.
FIG. 1 is a configuration diagram of a train-mounted video information distribution display system according to Embodiment 1 of the present invention. A train information device 10 mounted on each vehicle (here, car No. 1 to car n) is a stop station. Train information such as information and train operation information such as arrival time, train position information indicating the kilometer distance from the first station, in-vehicle device information such as door opening / closing commands, and the like, is processed. The train information device 10A of the leading vehicle is connected to various control operation devices such as a master controller (mass controller) and performs input / output processing of the various train information, and the train information device 10 mounted on each vehicle is digitally transmitted. They are connected to each other via the road 11 and perform the same operation to share train information.

  FIG. 2 shows an internal configuration of the train information device 10 mounted on the intermediate vehicle, and is connected to the train information device 10 mounted on the adjacent vehicle via the digital transmission path 11 via the communication I / F. In this embodiment, still image video information is transmitted using the transmission path 11 of the train information device 10. In-vehicle devices include doors, air conditioners, brakes, ATOs, automatic broadcast devices, SIVs, motors, etc., and each train information device 10 has a function of transmitting (packet transmission) status data (digital data) of these devices. And a function of performing a necessary control operation based on the state data. The display control device 12 (details will be described later) is connected by a digital transmission line 13 which is a first transmission line, and is output with high accuracy (for example, a small amount such as a magazine advertisement) output from a video information distribution device 14 which will be described later. Still image video information Sa of a still image having a large number of characters in a font is transmitted. In addition, since still image video information Sa has a smaller data capacity than moving image information, it can be distributed without affecting the original function of the train information device 10.

  Returning to FIG. 1, the video information distribution device 14 mounted on the leading vehicle is connected to the train information device 10 </ b> A of the same vehicle, and inputs the train information and outputs the still image video information Sa. This still picture image information Sa is output as a digital data signal, and further transmitted to the display control device 12 mounted on each vehicle via the first transmission path 13 via the train information device 10 mounted on each vehicle. In addition, the video information distribution device 14 includes a transmission path 15 routed between vehicles, a branching device 16 provided in each vehicle, an amplifying device 17 inserted in each part of the transmission path 15, and a signal terminating at the transmission path 15. Is connected to the display control device 12 mounted on each vehicle via a second transmission path composed of a termination device 18 and a transmission path 19, and video image information Ja is transmitted through the second transmission path. Are transmitted by analog data signals.

  The first wireless transmission / reception device 20 connected to the video information distribution device 14 is video information including still image video information and moving image information from the first ground station 21, that is, so-called real-time information such as news and weather forecast. And content data such as an emergency message, and display timing information including display designation date and time are input wirelessly, and the video information and display timing information including display designation date and time are output to the video information distribution device 14. Also, the second wireless transmission / reception device 22 connected to the video information distribution device 14 wirelessly inputs broadcast program information from the second ground station 23 using broadcast radio waves, and distributes the second moving image video information Ha to the video information distribution. Output to the device 14.

  FIG. 3 shows the internal configuration of the video information distribution apparatus 14. This video information distribution device 14 is connected to the first wireless transmission / reception device 20 via a communication I / F via a digital transmission path, and video information, that is, various content data and display timing from the first wireless transmission / reception device 20. In addition to receiving information, failure information (to be described later) and the like are transmitted to the first wireless transmission / reception device 20. In addition, it is connected to the train information device 10A of the leading vehicle via a digital transmission path, and receives train information such as kilometer and station information, and failure information described later from the train information device 10A. Then, the video information is temporarily stored in the storage unit, and the stored video information is subjected to necessary control by a CPU (control unit), and still image video information Sa, display command (control signal), and the like included in the video information Is transmitted to the train information device 10A via the communication I / F.

  Further, the video information once stored in the storage unit of the video information distribution device 14 is read out under the necessary control by the CPU (control unit), and is converted into a digital image by the image processing unit as moving image video information included in the video information. After being processed and further converted into an analog signal, the first signal modulator converts the signal into a high frequency range and outputs the signal as the first modulated signal R1. By converting the signal to a high frequency range, for example, even when the distance between adjacent stations is long and the influence of disturbance noise is large on the transmission line, it is not easily affected by deterioration due to the transmission line. In this embodiment, the moving image information included in the image information is the first moving image information.

  In addition, between the train information device 10 mounted on the same vehicle and the display control device 12 connected to the train information device 10, and between the train information device 10A and the video information distribution device 14, a constant cycle is obtained. “Question” and “Response” are repeatedly executed at T (generally about 100 to 1000 ms) (pole selecting method). For example, if there is no response from the other party for twice the period T, the other party has failed. It can also be decided to determine, and this information is failure information.

  FIG. 4 shows the configuration of the second wireless transmission / reception device 22, which has a tuner function for receiving a terrestrial digital broadcast wave that has recently started service in Japan and demodulating a broadcast program such as video information. ing. In FIG. 4, a digital terrestrial broadcast wave from the second ground station (broadcast station) 23 received via the antenna is demodulated into stream data by a demodulator, and video / audio information and program information are demultiplexed by a demultiplexer. And so on. The video / audio information is demodulated into a video / audio signal by a video / audio decoder, and analog second moving image video information Ha is output. The audio information is also demodulated and output, but the description is omitted in this embodiment.

Program information Pg in terrestrial digital broadcast output as digital data from the demultiplexer is based on an electronic program guide (EPG) in terrestrial digital broadcast transmitted from the second ground station (broadcast station) 23 together with video and audio. Yes. Electronic program guide (EPG) is one that corresponds to a television program guide to view the digital terrestrial broadcast program on the TV screen, to display the program guide information of a total of eight days in a week Sakima from that day. EPG contains information such as program contents and performers, but the major difference from the TV column in newspapers is that the latest program information is always distributed, and programs such as sudden special programs and pro baseball extensions are shown. Corresponding to moving and resting.

  Returning to FIG. 3, the video information distribution device 14 receives the second moving image video information Ha as an analog signal from the second wireless transmission / reception device 22, and is converted into a high frequency region by the second signal modulation unit. 2 is output as the modulated signal R2. Based on the display timing information including the display designation date and time from the first wireless transmission / reception device 20, the CPU (control unit) selects whether to use the first moving image information or the second moving image information. The switching control signal Rc to be output is output. The first modulation signal R1 and the second modulation signal R2 are output as moving image information Ja to the display control device 12, which will be described later, by the switching control signal Rc in the switching unit.

  FIG. 5 shows an internal configuration of the display control device 12. The moving image information Ja received from the image information distribution device 14 via the second transmission path is demodulated by the signal demodulator, digitally converted, and temporarily stored in the storage. Further, the still image information Sa from the train information device 10 is temporarily stored in the storage unit after passing through the communication I / F. Then, separately, a control signal output by superimposing the video information signal from the video information distribution device 14 is received via the train information device 10, and based on this control signal, predetermined video information is read from the storage unit and necessary. Image processing is performed, and the display control unit superimposes display content and telop character information for each display device 24 by parallel processing, and display output of different content is performed on the plurality of display devices 24. FIG. 6 shows the internal configuration of one display device 24. The display data from the display control device 12 is converted to digital and displayed on the display panel.

  Thus, in the first embodiment of the present invention, a plurality of first moving image information from the first wireless transmission / reception device 20 and second moving image information from the second wireless transmission / reception device 22 are provided. The moving image information can be automatically switched based on the display timing information from the first wireless transmission / reception device 20.

Embodiment 2. FIG.
Next, a second embodiment of the present invention will be described. In the first embodiment, when selecting which of the first moving image information and the second moving image information is to be used, the display timing information from the first wireless transmission / reception device 20 is used in the image information distribution device 14. In the second embodiment, the switching control signal Rc based on the program information Pg from the second radio transmitting / receiving device 22 is used.

  FIG. 7 shows the internal configuration of the video information distribution apparatus 14 according to the second embodiment, and differences from the first embodiment will be described. The program information Pg output from the second wireless transmission / reception device 22 is connected to the video information distribution device 14 via the communication I / F via the digital transmission path 25, and the program information Pg is transmitted from the CPU (control unit) based on the program information Pg. A switching control signal Rc for selecting and controlling which one of the moving image information and the second moving image information is used is output. In accordance with the switching control signal Rc, the first modulation signal R1 and the second modulation signal R2 are selectively controlled by the switching unit as either one of the modulation signals, and are output to the display control device 12 as moving image information Ja. It is what I did.

  As described above, the program information Pg is based on the broadcast program information in the terrestrial digital broadcast wave from the second ground station (broadcast station) 23. In digital terrestrial broadcasting, if a time change occurs in a broadcast program (for example, in the case of an extension of a baseball broadcast, for example), the contents of the change time are immediately included in the digital broadcast wave and transmitted. The latest broadcast program information corresponds to the program information Pg when received by the second wireless transmission / reception device 22. Therefore, the latest program information is also reflected in the switching control signal Rc derived from the program information Pg. In this way, the first moving image information and the second moving image information can be detected by the switching control signal Rc based on the latest broadcast program information even when the digital terrestrial broadcast program is suddenly changed. Since selection control can be performed, there is an effect that switching to the first moving image information can be performed in synchronization with the start and end of the broadcast program corresponding to the second moving image information.

Embodiment 3 FIG.
Next, a third embodiment of the present invention will be described. In the first embodiment or the second embodiment, the second video image information Ha in the analog signal format from the second wireless transmission / reception device 22 is signaled to the high frequency range by the second signal modulation unit in the video information distribution device 14. It was converted and input to the switching unit. In the third embodiment, the second moving image video information Ha is input to the switching unit in the video information distribution device 14 as an analog signal.

  FIG. 8 shows the internal configuration of the video information distribution apparatus 14 according to the third embodiment, and differences from the first or second embodiment will be described. The second moving image video information Ha from the second wireless transmission / reception device 22 is input to the switching unit in the video information distribution device 14 in FIG. 8 as an analog signal. The video information input from the first wireless transceiver 20 via the communication I / F via the digital transmission path is temporarily stored in the storage unit, and necessary control is performed by the CPU (control unit) and included in the video information. The first moving image information is read out, and then subjected to digital image processing by the image processing unit, and after analog conversion, is input to the switching unit.

  The two analog signals of the first moving image information and the second moving image information input to the switching unit are either moving image according to the switching control signal Rc derived in the same manner as in the first embodiment. Information is output from the switching unit, converted into a high frequency range by the signal modulation unit, and distributed to the display control device 12.

  In the third embodiment, since the second moving image video information Ha is input as an analog signal to the switching unit in the video information distribution device 14 of FIG. 8, the distance between adjacent vehicles is short and the influence of disturbance noise is small. In this case, the signal modulation unit in the video information distribution apparatus 14 that is necessary in the first or second embodiment is not necessary, and the configuration of the video information distribution apparatus 14 can be simplified.

Embodiment 4 FIG.
Next, a fourth embodiment of the present invention will be described. In the third embodiment, when selecting which of the first moving image information and the second moving image information is to be used, the display timing information from the first wireless transmission / reception device 20 is used in the image information distribution device 14. In the fourth embodiment, the switching control signal Rc based on the program information Pg from the second radio transmitting / receiving device 22 is used.

  FIG. 9 shows the internal configuration of the video information distribution apparatus 14 in the fourth embodiment, and points different from the third embodiment will be described. The program information Pg output from the second wireless transmission / reception device 22 is connected to the video information distribution device 14 via the communication I / F via the digital transmission path 25, and the first information is transmitted from the CPU (control unit) based on the program information Pg. The switching control signal Rc for selecting and controlling which one of the moving image information and the second moving image information is used is output. By this switching control signal Rc, one of the first moving image information and the second moving image information of the analog signal is converted from the switching unit to the display control device 12 as moving image information Ja. It is designed to output.

  In the fourth embodiment, the second moving image video information Ha is input as an analog signal to the switching unit in the video information distribution device 14 in FIG. 9, so that it is necessary in the first or second embodiment. This eliminates the need for the signal modulation unit and simplifies the configuration of the video information distribution apparatus 14. In addition, the first moving image information and the second moving image information can be selectively controlled by the switching control signal Rc derived from the latest program information Pg even when a terrestrial digital broadcast program is suddenly changed. Therefore, there is an effect that switching to the first moving image information can be performed in synchronization with the start and end of the broadcast program corresponding to the second moving image information.

Embodiment 5 FIG.
Next, a fifth embodiment of the present invention will be described. FIG. 10 is a configuration diagram of a train-mounted video information distribution display system according to Embodiment 5 of the present invention. The train information device 10 mounted in each vehicle (here, car No. 1 to car n) is a stop station. Train information such as information and train operation information such as arrival time, train position information indicating the kilometer distance from the first station, in-vehicle device information such as door opening / closing commands, and the like, is processed. The train information device 10A of the leading vehicle is connected to various control operation devices such as a master controller (mass controller), and the train information devices 10 mounted on each vehicle are connected to each other via a digital transmission path 11. Input / output processing of the various types of train information is performed in conjunction with each other. The configuration so far is the same as that described in the first embodiment.

  FIG. 11 shows an internal configuration of the train information device 10 mounted on the intermediate vehicle, and is connected to the train information device 10 mounted on the adjacent vehicle via the digital transmission path 11 via the communication I / F. Each train information device 10 is based on a function for transmitting (packet transmission) status data (digital data) of in-vehicle devices such as doors, air conditioners, brakes, ATOs, automatic broadcast devices, SIVs, motors, and the like. And a function of performing a necessary control operation. And it is connected with the display control apparatus 100 (it mentions later for details) by the digital transmission path 13 which is a 1st transmission path, and transmits the said train information, such as train position information.

  Returning to FIG. 10, the video information distribution device 101 mounted on the leading vehicle is connected to the train information device 10 </ b> A of the vehicle and inputs the train information. Further, the video information distribution apparatus 101 transmits the video information Va, which is digital data, to the transmission processing apparatus 103A of the leading vehicle through the digital transmission path 102 passed between the vehicles. Furthermore, the transmission processing device 103A of the leading vehicle transmits the video information Va, which is digital data, to the transmission processing device 103 provided in each vehicle through the digital transmission path 102, and is mounted on each vehicle via the digital transmission path 104. To the displayed display control device 100.

  The first wireless transmission / reception device 20 connected to the video information distribution device 101 receives from the first ground station 21 moving image information information and still images such as so-called real-time information such as news and weather forecasts and emergency messages. The display timing information including the video information data and the display designation date and time related to the content is input wirelessly, and these are output to the video information distribution apparatus 101 as video information. In this embodiment, the moving image information included in the image information is the first moving image information.

  Also, the second wireless transmission / reception device 105 connected to the video information distribution device 101 wirelessly inputs a broadcast program such as video, audio, and program information from the second ground station 23 using broadcast radio waves, and receives the second moving image. The video information Ha is output to the video information distribution apparatus 101.

  FIG. 12 shows the configuration of the second wireless transmission / reception device 105, which has a tuner function for receiving a terrestrial digital broadcast wave that has recently started service in Japan and demodulating a broadcast program such as video information. ing. In FIG. 12, the terrestrial digital broadcast wave received from the second terrestrial station (broadcast station) 23 via the antenna is demodulated into stream data by a demodulator and multiplexed at the time of broadcasting by a demultiplexer. The video, audio, program, and the like are separated, decoded into video information, audio information, and program information by a decoder and digitally output as stream data. The decoded video information is converted into analog video information by the video encoder and output as the second moving image video information Ha. The description of the audio information is omitted.

  Moreover, the program information Pg in the terrestrial digital broadcast digitally output from the decoder is based on an electronic program guide (EPG) in the terrestrial digital broadcast transmitted from the second ground station (broadcast station) 23 together with video and audio. . An electronic program guide (EPG) corresponds to a television program guide for viewing digital terrestrial broadcast programs on a television screen, and displays, for example, program guide information for a total of eight days from that day to one week ahead. In the EPG, the latest program information is always distributed, and if the broadcast time is changed (due to a sudden special program or pro baseball extension, etc.), it is corrected and broadcast in real time.

  FIG. 13 shows the internal configuration of the video information distribution apparatus 101. The first wireless transmission / reception device 20 is connected to the first wireless transmission / reception device 20 via a digital I / F, and includes the moving image video information data, still image video information data, and display timing information from the first wireless transmission / reception device 20. Information is received and temporarily stored in the storage unit.

  The video information distribution device 101 receives the second moving image video information Ha as an analog signal from the second wireless transmission / reception device 105, and after A / D conversion, the second moving image is processed. The video information data is temporarily stored in the storage unit. Then, the CPU (control unit) performs necessary control processing based on the display timing information included in the video information, and the first moving image video information data and the second moving image information information data included in the video information. Is selected and read from the storage unit. At the same time, still image video information data included in the video information is read out in the same manner, and stream data including the display timing information is transmitted to the transmission processing apparatus 103 as digital data Va. In addition, it is connected to the train information device 10A of the leading vehicle via a digital transmission path, and receives train information such as kilometer and station information from the train information device 10A.

  FIG. 14 shows the internal configuration of the transmission processing apparatus 103. The digital data Va from the video information distribution apparatus 101 is input to the transmission processing apparatus 103. The transmission processing apparatus 103 is connected to the digital transmission path 102 via a transmission I / F. The digital data Va input from the video information distribution apparatus 101 is transmitted through the digital transmission path 102 to the transmission processing apparatus 103 of the adjacent vehicle by being subjected to control processing by the CPU, and the display control apparatus mounted on the vehicle. 100 is also transmitted via the digital transmission path 104.

  FIG. 15 shows an internal configuration of the display control apparatus 100. The display control apparatus 100 is connected to the transmission processing apparatus 103 via the digital transmission path 104, and the digital data Va is temporarily stored in the storage unit of the display control apparatus 100. Then, the CPU reads out predetermined video information from the storage unit by the control signal based on the display timing information included in the digital data Va and the train information received via the train information device 10, and performs necessary image processing. The data is output to the display device 106 as display data relating to the video or still image. FIG. 16 shows the internal configuration of one display device 106, which receives display data from the display control device 100 via the display I / F and displays it on the display panel.

  As described above, in the fifth embodiment, a plurality of pieces of moving image information including the first moving image information from the first wireless transmission / reception device 20 and the second moving image information from the second wireless transmission / reception device 105 are used. All of the video image information obtained by automatically selecting one of the video image information based on the display timing information from the first wireless transmission / reception device 20 and the still image video information from the first wireless transmission / reception device 20 Digital data is distributed from the video information distribution apparatus 101 to the transmission processing apparatus 103 via the digital transmission path 102, and is also distributed from the transmission processing apparatus 103 to the transmission processing apparatus 103 provided in the adjacent vehicle via the digital transmission path 102. . Then, the digital data is transmitted from the transmission processing device 103 provided in each of these vehicles to the display control device 100 in the same vehicle via the digital transmission path 104, and after the display control processing is performed, a predetermined amount is transmitted to the display device 106. Displaying video information. Therefore, even when there are a plurality of wireless video information inputs from the ground, desired video information can be displayed on the display device, and high-quality video display can be performed with little influence of noise by digital transmission. There is an effect that can be done.

Embodiment 6 FIG.
Next, a sixth embodiment of the present invention will be described. In the fifth embodiment, when selecting which of the first moving image information and the second moving image information is to be used, the display timing information from the first wireless transmission / reception device 20 is used in the image information distribution device 101. In the sixth embodiment, the selection is performed based on the program information Pg from the second wireless transmission / reception device 105.

  FIG. 17 shows the internal configuration of the video information distribution apparatus 101 according to the sixth embodiment, and differences from the fifth embodiment will be described. The program information Pg output from the second wireless transmission / reception device 105 is connected to the video information distribution device 101 via the communication I / F via the digital transmission path 25, and the first information is sent from the CPU (control unit) based on the program information Pg. Which moving image information or second moving image information is used is selectively controlled.

  As described above, the program information Pg is based on broadcast program information in a digital terrestrial broadcast wave from the second ground station (broadcast station) 23. In digital terrestrial broadcasting, if a time change occurs in a broadcast program (for example, in the case of an extension of a baseball broadcast, for example), the contents of the change time are immediately included in the digital broadcast wave and transmitted. The latest broadcast program information corresponds to the program information Pg when received by the second wireless transmission / reception device 105. Therefore, the latest program information is reflected in the selection control derived from the program information Pg. In this way, the first moving image information and the second moving image information can be selected by selection control based on the latest broadcast program intelligence even for a sudden change in the terrestrial digital broadcast program. There is an effect that switching to the first moving image information can be performed in synchronization with the start and end of the broadcast program corresponding to the second moving image information.

Embodiment 7 FIG.
Next, a seventh embodiment of the present invention will be described. In the fifth embodiment or the sixth embodiment, the second video image information Ha in the analog signal format from the second wireless transmission / reception device 105 is converted into a digital signal by A / D conversion in the video information distribution device 101. I / F treatment was done. In the seventh embodiment, the second moving image video information Ha is input to the video information distribution apparatus 101 as a digital signal.

  FIG. 18 shows the configuration of second radio transmission / reception device 105 in the seventh embodiment, and FIG. 19 shows the internal configuration of video information distribution device 101, and the differences from the fifth or sixth embodiment will be described. .

  In the second wireless transmission / reception device 105, the video, audio, program and the like multiplexed at the time of broadcasting are separated by the demultiplexer, and the decoder decodes the video information, audio information, and program information into digital data as stream data. Output. In the seventh embodiment, the video information output from the second wireless transmission / reception device 105 remains as digital data as the second moving image video information Ha, and the digital information in the video information distribution device 70 shown in FIG. As in the case of the fifth or sixth embodiment without using the A / D conversion of the video information distribution apparatus 101 that is necessary in the fifth or sixth embodiment. The effect of can be obtained.

Embodiment 8 FIG.
Next, an eighth embodiment of the present invention will be described. In the video information distribution apparatus 101 according to the fifth to seventh embodiments, the first moving image information information data included in the image information and the second moving image information information data included in the second image information. Digital data Va as stream data including still image video information data included in the video information is transmitted to the transmission processing device 103 as well as the moving image video information data selected by any one of them. In the eighth embodiment, moving image video information data and still image information data are transmitted to the display control apparatus via different digital transmission paths.

FIG. 20 shows a configuration diagram of a train-mounted video information delivery / display system in the eighth embodiment. In FIG. 20, a video information distribution device 200 mounted on the leading vehicle is connected to a train information device 201A of the vehicle, and inputs the train information and outputs still image video information.
Furthermore, the video information distribution device 200 connects the moving image video information Ma, which is digital data, to the transmission processing device 202A of the leading vehicle through the digital transmission path 102 passed between the vehicles. Furthermore, the transmission processing device 202A of the leading vehicle transmits the moving image information Ma, which is digital data, to the transmission processing device 202 provided in each vehicle via the digital transmission path 102 and to each vehicle via the digital transmission path 104. The data is transmitted to the mounted display control apparatus 203.

  FIG. 21 shows an internal configuration of the train information device 201 mounted on the intermediate vehicle, and is connected to the train information device 201 mounted on the adjacent vehicle via the digital transmission path 11 via the communication I / F. In the eighth embodiment, still image video information is transmitted using the transmission path of the train information device 201. The display control device 203 (details will be described later) is connected to the first transmission path 104, and transmits still image video information Sa output from the video information distribution device 200 described later.

  FIG. 22 shows the internal configuration of the video information distribution apparatus 200, and the difference in operation from the fifth to seventh embodiments will be described. In FIG. 22, the first wireless transmission / reception device 20 is connected to the first wireless transmission / reception device 20 via a communication I / F via the digital transmission path. The video information is received and temporarily stored in the storage unit. Then, the CPU (control unit) performs necessary control on the video information once stored in the storage unit, and the still image video information Sa and display commands (control signals) included in the video information are transmitted via the communication I / F. It transmits to the train information device 201A of the head car. Further, the train information device 201A of the leading vehicle is connected by a digital transmission path, and train information such as kilometer and station information and further failure information are received from the train information device 201A of the leading vehicle.

  The video information distribution device 200 receives the second moving image information Ha as an analog signal from the second wireless transmission / reception device 105, and after A / D conversion, the second moving image is processed. The video information data is temporarily stored in the storage unit. Then, a necessary control process is performed by a CPU (control unit) based on display timing information included in the video information, and one of the first moving image video information data and the second moving image information information data in the video information. Is selected, read from the storage unit, and transmitted to the transmission processing device 202A as digital data Ma as stream data including the display timing information. That is, the digital data Ma does not include still image information data.

  The internal configuration of the transmission processing apparatus 202 is shown in FIG. 23, and differences from the fifth to seventh embodiments will be described. In FIG. 23, the digital data Ma from the video information distribution apparatus 200 is input to the transmission processing apparatus 202, connected via the transmission I / F through the digital transmission path 102, and controlled by the CPU to transmit adjacent vehicles. In addition to being transmitted to the processing device 202 via the digital transmission path 102, it is also transmitted to the display control device 203 installed in the vehicle via the digital transmission path 104.

  FIG. 24 shows the configuration of the display control apparatus 203 in the eighth embodiment. Digital data Ma composed of moving image information and display timing information is connected to the transmission processing device 202 via the digital transmission path 104, and is temporarily stored in the storage unit. Separately, the still image information Sa from the train information device 201 is temporarily stored in the storage unit after passing through the communication I / F. Based on the display timing information included in the stream data Ma and a control signal based on the train information received via the train information device 201, the CPU reads predetermined video information from the storage unit and performs necessary image processing. Then, the data is output to the display device 106 as display data relating to a moving image or a still image.

  Note that in the video information distribution device 200 shown in FIG. 22, the CPU (control unit) performs necessary control processing based on the display timing information included in the video information, and the first moving image video information data in the video information and One of the second moving image information information data has been selected, but the present invention is not limited to this. Similarly to the sixth embodiment, the video information distribution apparatus 200 may perform selection based on the program information Pg from the second wireless transmission / reception apparatus 105.

  In the video information distribution apparatus 200 shown in FIG. 22, the second moving image video information Ha in the analog signal format from the second wireless transmission / reception apparatus 105 is converted into a digital signal by A / D conversion in the video information distribution apparatus 200. However, the present invention is not limited to this. As in the seventh embodiment, the video information output from the second wireless transmission / reception device 105 is digital data as the second moving image video information Ha, and the I / F processing in the video information distribution device 190 is as digital transmission. You may make it connect to.

  In the eighth embodiment, unlike the fifth to seventh embodiments, the moving image information information data and the still image information data are transmitted to the display control apparatus via different digital transmission paths. The effect similar to thru | or 7 can be show | played.

  In each of the above embodiments, the case has been described in which the present invention deals with reception signals from two devices, the first wireless transmission / reception device and the second wireless transmission / reception device. However, two or more reception signals may be handled. Further, the number of display devices connected to the display control device installed in each vehicle is not limited to a plurality of display devices, and may be one display device.

  Moreover, in each said embodiment, it is not limited to the case where one display control apparatus is installed in each vehicle, A plurality of display control apparatuses may be installed in each vehicle.

  The train-mounted video information distribution / display system according to the present invention can be used as a train-mounted video information distribution / display system for displaying high-quality video image information when the number of wireless inputs from the ground station is plural.

1 is a configuration diagram illustrating an entire train-mounted video information distribution / display system in Embodiment 1. FIG. It is a figure which shows the internal structure of the train information apparatus in Embodiment 1. FIG. 2 is a diagram illustrating an internal configuration of a video information distribution apparatus according to Embodiment 1. FIG. 3 is a diagram illustrating an internal configuration of a second wireless transmission / reception apparatus according to Embodiment 1. FIG. 2 is a diagram showing an internal configuration of a display control device in Embodiment 1. FIG. 3 is a diagram showing an internal configuration of a display device in Embodiment 1. FIG. 6 is a diagram illustrating an internal configuration of a video information distribution apparatus according to Embodiment 2. FIG. FIG. 10 is a diagram illustrating an internal configuration of a video information distribution apparatus according to Embodiment 3. FIG. 10 is a diagram showing an internal configuration of a video information distribution apparatus in a fourth embodiment. It is a block diagram which shows the whole train mounted video information delivery display system in Embodiment 5. It is a figure which shows the internal structure of the train information apparatus in Embodiment 5. FIG. FIG. 10 is a diagram illustrating an internal configuration of a second wireless transmission / reception device in the fifth embodiment. FIG. 10 is a diagram illustrating an internal configuration of a video information distribution apparatus in a fifth embodiment. FIG. 10 is a diagram illustrating an internal configuration of a transmission processing apparatus according to a fifth embodiment. FIG. 10 is a diagram illustrating an internal configuration of a display control device according to a fifth embodiment. FIG. 10 is a diagram illustrating an internal configuration of a display device in a fifth embodiment. FIG. 20 is a diagram illustrating an internal configuration of a video information distribution apparatus in a sixth embodiment. FIG. 38 is a diagram illustrating an internal configuration of a second wireless transmission / reception apparatus according to the seventh embodiment. FIG. 20 is a diagram showing an internal configuration of a video information distribution apparatus in a seventh embodiment. It is a block diagram which shows the whole train mounted video information delivery display system in Embodiment 8. FIG. FIG. 20 is a diagram illustrating an internal configuration of a train information device in an eighth embodiment. FIG. 20 is a diagram illustrating an internal configuration of a video information distribution apparatus in an eighth embodiment. FIG. 20 is a diagram illustrating an internal configuration of a transmission processing apparatus according to an eighth embodiment. FIG. 20 is a diagram illustrating an internal configuration of a display control device 91 according to an eighth embodiment.

Explanation of symbols

10, 201 Train information device 11, 13, 25, 102, 104 Digital transmission line 12, 100, 203 Display control device 14, 101, 200 Video information distribution device 15, 19 Transmission route 16 Branch device 17 Amplifying device 18 Termination device 20 First wireless transceiver 21 First ground station 22, 105 Second wireless transceiver 23 Second ground station 24, 106 Display device 103, 202 Transmission processor Ha Second moving image information Ja Moving image information Sa Still image information Pg Program information Va Image information

Claims (7)

A train information means mounted on each of a plurality of vehicles constituting one train and processing train information, which is information relating to the running state of the train, linked to each other via a digital transmission path;
First wireless transmission / reception means for receiving, from the first ground station, video information including still image video information and first moving image video information, and display timing information including display designation date and time ;
A second radio transceiver means for receiving a second video image information from the second ground station,
Connected to any one of the train information means, converts the first moving image information from the first wireless transmission / reception means to a high frequency range, and converts the second video transmission / reception means from the second wireless transmission / reception means. Either the moving image information is signal-converted to a high frequency range, the first moving image information converted to the high frequency range , and the second moving image information converted to the high frequency range . Video information distribution means for automatically selecting moving image information with a switching control signal based on the display timing information and distributing and outputting the analog image signal, and outputting and outputting the still image information with a digital data signal;
The still image video information that is mounted on each of the plurality of vehicles and that is output from the train information means on the first transmission path from the train information means of the vehicle is input, and second transmission is performed from the video information distribution means. Display control means for inputting the moving picture video information output by the video information distribution means on the road and outputting as predetermined video information;
Display means for displaying the video information output from the display control means;
A train-mounted video information distribution and display system characterized by comprising:   The train according to claim 1, wherein the video information distribution means selects one of the first video information and the second video information by signal modulation. On-board video information distribution display system.   3. The video information distribution unit selects one of the first moving image information and the second moving image information by an analog signal. Train-mounted video information distribution and display system. A train information means mounted on each of a plurality of vehicles constituting one train and processing train information, which is information relating to the running state of the train, linked to each other via a digital transmission path;
First wireless transmission / reception means for receiving, from the first ground station, video information including still image video information and first moving image video information, and display timing information including display designation date and time ;
A second radio transceiver means for receiving a second video image information from the second ground station,
The first moving image information from the first wireless transmission / reception means is converted into a high frequency range, and the second moving image information from the second wireless transmission / reception means is converted into a high frequency range. , based on the display timing information from among the high first video image information, and at least two video image information of said high second video image information that is a signal converted into the frequency domain, which is a signal converted into the frequency domain Video information distribution means for distributing and outputting any moving image video information automatically selected by a switching control signal and digital data including the still image video information;
Transmission processing means mounted on each of the plurality of vehicles, delivering and outputting the digital data from the video information delivery means in the vehicle on a digital transmission path, and delivering the digital data to adjacent vehicles;
Display control means mounted on each of the plurality of vehicles, which inputs the digital data distributed and output by the transmission processing means and outputs it as predetermined video information;
Display means for displaying the video information output from the display control means;
A train-mounted video information distribution and display system characterized by comprising: A train information means mounted on each of a plurality of vehicles constituting one train and processing train information, which is information relating to the running state of the train, linked to each other via a digital transmission path;
First wireless transmission / reception means for receiving, from the first ground station, video information including still image video information and first moving image video information, and display timing information including display designation date and time ;
A second radio transceiver means for receiving a second video image information from the second ground station,
The first moving image information from the first wireless transmission / reception means is converted into a high frequency range, and the second moving image information from the second wireless transmission / reception means is converted into a high frequency range. , based on the display timing information from among the high first video image information, and at least two video image information of said high second video image information that is a signal converted into the frequency domain, which is a signal converted into the frequency domain The digital data of any moving image information automatically selected by the switching control signal is distributed and output through the first digital transmission line, and the digital data of the still image information is distributed through the second digital transmission line. Video information distribution means for outputting;
Transmission processing means mounted on each of the plurality of vehicles, for distributing and outputting the digital data of the moving image information in the vehicle on the first digital transmission path, and for distributing and outputting to adjacent vehicles;
The moving image information of the moving image information that is mounted on each of the plurality of vehicles and that inputs the digital data of the still image information via the train information means on the second digital transmission path and that is distributed and output by the transmission processing means. Display control means for inputting digital data and outputting it as predetermined video information;
Display means for displaying the video information output from the display control means;
A train-mounted video information distribution and display system characterized by comprising:   6. The train-mounted video information distribution / display system according to claim 4, wherein the second moving image information is digital data. Instead of the switching control signal based on the display timing information from the first ground station , the selection of one of the first moving image information and the second moving image information is replaced with the switching control signal based on the display timing information from the first ground station. The train-mounted video information distribution display system according to any one of claims 1 to 6, wherein the system is performed by a switching control signal based on broadcast program information in terrestrial digital broadcast waves from two ground stations .

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