JPH031685A - On-vehicle information reception system - Google Patents

Abstract

PURPOSE:To offer various kinds of information and a teletext broadcast in a vehicle to passengers by storing a transfer data in advance into a ground stationary station, converting the data serially, transferring the result to a travelling object while the travelling object is stopped, allowing the travelling object to receive, store and display the data. CONSTITUTION:A remote controller 9 is used in a ground station 1 to store a prescribed program of a teletext broadcast and a data of the CAPTAIN system into a memory 5 before a train 2 enters a relevant station. When the train 2 reaches and stops at the station, the data is read from the memory 6, converted into a serial signal and radiates in a radio wave. A reception section 11 of a conductor room of the train 2 at standstill receives the radio wave, the serial data is restored and stored in a memory in a teletext signal generator 12 and read out. Moreover, the data is superimposed on the NTSC standard signal, the result is RF-modulated and sent to car bodies A-N through a cable 18 and a booster 19. A teletext receiver 16 of each car body receives the signal via a distributer 15 and the superimposed teletext broadcast, the CAPTAIN system information or the video image from a cassette is displayed on a monitor 17 through channel changeover.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention displays text broadcasts and various information transferred from a ground station on a display device in each car of a moving body 1, for example, a train, and provides various information to one passenger. The present invention relates to a new vehicle information receiving system.

[Conventional example] In recent years, teletext broadcasts of various information have been multiplexed into television broadcasts, and with a teletext adapter, these teletext broadcasts can be received with a regular television receiver, making it easy for anyone to receive the information. But now it can be used. On the other hand, various advertisements are posted on trains, and these various advertisements serve as a source of information. In addition, as a service for passengers, modern trains provide various information to passengers by displaying satellite broadcasts received through parabolic antennas on the television receivers (LCD televisions) of each car.
There are some services that are unprecedented.

[Problems to be Solved by the Invention] By the way, inside a moving train, it is difficult to directly receive text broadcasts that are multiplexed with regular television broadcasts due to fading and the like.

Therefore, it is conceivable to receive the teletext while the train is stopped. However, since one page of teletext data is transmitted in about 20 seconds,
To receive all pages of a program, a waiting time of about the total number of pages x 20 seconds is required, so all programs and all pages of the teletext broadcast can be received within a stop time of several tens of seconds to one minute. It is difficult to do so.

This invention was made in view of the above points, and its purpose is to provide a vehicle information receiving system that can provide text broadcasting and other various information to passengers in a vehicle, thereby further improving services. It is about providing.

[Means for Solving the Problems] In order to achieve the above object, the vehicle information receiving system of the present invention transmits data from the ground fixed station to the ground fixed station when transmitting information data to be displayed on a display device in a moving object. stores the transfer data in advance, converts the stored data into serial data, and transfers the serial data while the mobile body is stopped,
The gist of the present invention is that the mobile body receives the serial data while stopped, stores the data, and displays information based on the serial data on the display device.

The above-mentioned ground station is fixed within the station premises, and the ground fixed station includes a teletext receiving means for receiving teletext via a television antenna or inputting various information via a telephone line; A storage means for storing the received teletext and information data, a conversion control means for converting the stored data into serial data in a predetermined format, and a transmission means for transmitting the serial data are provided.

Further, the mobile object is a train, and the train has a receiving means for receiving serial data from the ground station, a storage means for storing the received data, and a format for storing the stored data in accordance with the teletext standard. and a conversion control means for converting the signal into an NTSC standard signal and superimposing this signal on an NTSC standard signal, a transmitting means for IIF modulating this N1'S C standard signal and transmitting it, and receiving this RF modulated signal,
Display means for displaying information such as the received teletext is provided.

[Function] With the above configuration, the ground station stores the data (text information code) of various information input via the text broadcast received via the television antenna and the telephone line, and for example, the above Only predetermined teletext programs and predetermined information provided to train passengers are stored. In this way, data for single text broadcasts and various information is stored in advance, and when a train stops at the station, the data for text broadcasts and various information is converted into serial data and sent to the train using radio waves or light. is forwarded to the receiving side. At this time, since the transferred data is only teletext program/page data or data of various information, it is possible to complete the data transfer within the train stop time.

On the other hand, on the train side, data from the ground station is received, and the data is received within the stop time, and the received data is stored in the internal memory. in this way,
The stored data (character information code) is read out sequentially and converted into a signal format (data string;
data packets). This data string is NTS
The signal is superimposed on the C standard video signal, and the video signal is RF modulated. Since the RF-modulated antenna (HF) signal is transmitted to the receiving side of each vehicle via a coaxial cable, the display device (monitor device) of each vehicle is based on the transmitted RF multiplied signal. A predetermined teletext program or various information is displayed.

In addition, on the train side, since the signal transmitted via the coaxial cable is an RF multiplied signal, multiple video or still image information is divided into each channel and transmitted to the receiving side of each vehicle. I can do it.

In addition, the character signal of all channels can be superimposed during the vertical blanking period, receiving address information of each vehicle.

When channel switching information and the like are added, it becomes possible for each vehicle's monitor device to display text broadcasts or moving images (for example, to the video input unit 1) of the channel switched based on the information.

[Example] Embodiments of the present invention will be described below with reference to the drawings.

In Figure 1, the vehicle information receiving system is a ground fixed station (hereinafter referred to as a ground station) that is fixedly installed in a station, for example, and converts data such as received text broadcasts or information input via a telephone line into serial data and transmits the data. ) 1 and a train 2 that receives signals from the ground station 1, stores the received data, and displays text broadcasts and predetermined information on a display device based on the stored data. It is configured.

The ground station 1 stores the data of all programs and pages of teletext received via the television antenna 3, or stores the data of all the programs and pages of the teletext received via the television antenna 3, or inputs data from other information input devices (for example, Captain System) 4.
a data memory 5 for storing data such as other information input via a telephone line;
Furthermore, a teletext receiver 6 controls the storage of the data memory 5, converts the stored data into serial data in a predetermined format (signal 11111, #Ql''), and outputs the serial data, and transmits this serial data into radio waves. a monitor device (liquid crystal display device) 8 that displays the teletext and other information based on the received teletext or data stored in the data memory 5; and the teletext receiver 6. A remote controller 9 is provided for issuing various control instructions to the controller.The serial data may include, for example, reception time data of a 5-letter broadcast, data string start code, and memory as shown in FIG. Control codes such as a write address code and 190 bits of data read from the data memory 5 constitute a data block.

The electric train 2 is composed of a plurality of connected cars A, . . . A receiving unit 11 restores and outputs serial data from the received radio waves, obtains the teletext program and other information from the serial data, and stores the serial data in a predetermined area of an internal memory, Then, this stored data is sequentially read out to form a data string (data packet) in the signal format of the teletext standard, and this data string is
A character signal generating section 12 that superimposes and outputs a TSC standard video signal, and a transmitting section that converts the signal on which the data string of the teletext broadcast and other information is superimposed into an RF signal and outputs it.
An RF modulator (RF modulator) 13 and a VTR device 14 that outputs a video signal from a normal video cassette or the like to the transmitter 13 are provided. Also 1. Each vehicle A.

..., N has a distributor 15 for distributing the RF multiplied signal,
A plurality of character receivers 16 each decode teletext, other information, video cassette images, etc. from this distributed RF double signal, and a plurality of character receivers 16 each display the teletext, other information, video cassette video, etc. monitor device 17
are provided, and the distributor 15 and the transmitter 1
3 via a cable (coaxial cable) 18 and a booster 19.

Next, the operation of the vehicle information receiving system having the above configuration will be explained with reference to the signal format schematic diagrams of FIGS. 2 and 3.

First, in the ground station 1, it is assumed that all pages of a predetermined teletext program received via the antenna 3 and information data of the captain system are stored in the data memory 5 according to instructions from the remote controller 9. Moreover, data of all programs and all pages selected from those teletext broadcasts or data of the captain system are stored in the data memory 5 before the train 2 enters the station where the ground station 1 is installed. do. When the train 2 stops at the station, the ground station 1 sequentially reads data from the data memory 5, converts the data into serial data, and emits the serial data via radio waves. The teletext receiver 6 of the ground station 1 can display the received teletext on the monitor device 8 in the same way as before, and can also display any teletext programs stored in the data memory 5 and other teletext programs. Information can be displayed on the monitor device 8. Therefore, the teletext and other information stored in the data memory 5 can be displayed on the monitor device 8 and checked before being transmitted to the train 2.

Then, the stationary train 2 receives the radio waves, restores the serial data from the received signal, and converts the serial data into 8 characters stored in a predetermined area of the internal memory of the character signal generator 12. Signal generator 1
2, the data stored in the internal memory, for example, the data of the first page of an arbitrary program or the data of the captain system according to instructions from the conductor, etc., is read out, and a data string (data packet) in the signal format of the teletext standard is read out. and these data strings are superimposed on the NTSC standard signal. That is, as shown in FIG. 3, the data packet (information data = 190 bits, check for error correction) is stored in each field of the 10th to 21st H (horizontal scanning period) of the vertical blanking period of the signal. code: 82 bits), etc. In this way, the signal on which the data of any teletext program or the captain system data is superimposed is RF' modulated and sent to the cable 18,
It is transmitted to each vehicle A, . . . , N via the booster 19. On the other hand, when transmitting images from a video cassette loaded in the VTR device 14 to each vehicle A, . . . , N, the conductor, etc. Similarly, the video recorded on the video cassette is converted into a video signal of the NTSC standard, and this video signal is RF-modulated and transmitted.In this case, the transmitting section 13 is equipped with two or more RF modulators, and each Information on broadcasts and the captain system, and video signals of various images from the VTR device 14 are converted into RF signals.In addition, the timing of transmitting the video of the video cassette and the above-mentioned text broadcast, and the beginning of the rewinding of the video cassette are determined. ) is determined by mutual exchange of status information etc. between the character signal generating section 12 and the VTR device 14 via a serial or parallel bus.

Subsequently, the RF modulated signal is received by the character receiver 16 of each vehicle A, . . . , N via the distributor 15. These text receivers 16 have a built-in TV tuner in addition to a teletext decoder, so when the channel is switched, the teletext that is superimposed on the video signal,
The information of the captain system or the video of the video cassette is switched and displayed on the monitor device 17. At this time, the channel switching is performed at a location where the system is to be centrally managed, for example in the conductor's room 10, for each vehicle A,...
, N monitor devices 17, and a channel switching instruction is issued. In this case, for example, channel switching code information and terminal code information of the character receiver 16 are given to IH of the 1st to 21st horizontal scanning periods in which character signals of all channels can be superimposed. That is, the character receiver 16 of each vehicle A,...N
In this case, when an RF modulated signal is received, switching control of the channel is performed based on the channel switching code and terminal code, so different channel selections are performed. The monitor device 17 connected to these character receivers 16 displays different things, such as a teletext broadcast or a video cassette video. Therefore, each terminal (monitor device 17
) or to the monitor device 17 of each vehicle.

By the way, there are 20 teletexts that are multiplexed into television broadcasts.
Information for one page of all programs is transmitted every second, and for example, when receiving a 10-page program normally, it takes about three minutes. Therefore, the stop time of the train 2 is usually only about 30 seconds to 1 minute, and the teletext program data that can be received during that time is limited. However, according to the present invention, in the ground station 1, the data of all pages of a plurality of programs among the received teletext are stored in advance in the data memory 5.
Since the data is stored in the train 2 and transmitted to the train 2, the train 2 can receive the data while the train 2 is stopped. Note that if there is a large amount of data transmitted from the ground station 1, the data transmission speed may be increased.

Furthermore, at the ground station 1, as described above.

The data memory 5 stores data for multiple teletext programs/pages, but even when information data is sent from an information provider (IP) via a telephone line, that data is also stored. good. As a result, each vehicle A...
, N display original information on the monitor device 17, and also expand in-vehicle services. In this case, the data transferred via the telephone line only needs to comply with teletext or captain system protocol (PLPS).

In this way, any teletext program, captain system information, or other individual information can be displayed on the monitor device 17 of each vehicle A, . can provide various information.

In addition, since any program of those teletext broadcasts, captain system information, or other individual information is transmitted to stopped train 2, it is not affected by fading, etc., so each train A, ..., N. Reliable information can be displayed on the monitor device 17.

Note that the information input device 4 in the above embodiment may be, for example, a personal computer, an image scanner, or the like. Each vehicle A is input by inputting individual information and image information using these input devices.

Since the individual information and image information are displayed on the monitor device 17 of..., N, it is possible to provide passengers with various information, various event information, sightseeing information, etc.

Further, in the above embodiment, the signal transmission from the ground station 1 is carried out by radio waves, but it may be carried out by optical transmission, etc. In this case, the transmitter 7 of the ground station 1 is provided with serial data to be transmitted. The receiver 1 of the train 2 is equipped with a converter that converts the light into light.
1 may be provided with a converter that converts the light into an electrical signal.

[Effects of the Invention] As explained above, according to the vehicle information receiving system of the present invention, all programs and pages of teletext broadcasting, captain system information data, or telephone lines can be received in advance at a fixed ground station. The data of the individual information sent through the
The data is transmitted to the stopped vehicle, and the vehicle receives the data, and displays teletext programs, information, etc. based on the received data on the monitor device. As a result, it is possible to provide various information services, various event and tourist information services to passengers, and it is possible to improve services to passengers, and it can also be used as an advertising medium.

[Brief explanation of the drawing]

FIG. 1 is a schematic block diagram of a vehicle information receiving system showing an embodiment of the present invention, and FIGS. 2 and 3 are schematic diagrams illustrating a data transfer format in the vehicle information receiving system. In the figure, 1 is a fixed ground station (ground station), 2 is a train (moving vehicle), 3 is a television antenna, 4 is an information input device, 5 is a data memory, 6 is a teletext receiver, 7 is a transmitter, 8 ,17
is a monitor device, 11 is a receiving section, 12 is a character signal generating section,
13 is a transmitter (RF modulator), 14 is a VTR device, 15
is a distributor, 16 is a character receiver, 18 is a cable (coaxial)
, 19 is a booster. Patent applicant: Fujitsu General Co., Ltd. Patent attorney: Takuya Ohara

Claims (6)

[Claims] (1) When transferring data of information to be displayed on a display device in a mobile object from a ground fixed station, the ground fixed station stores the transferred data in advance and converts the stored data into serial data. and transmits the serial data while the mobile body is stopped, and the mobile body receives the serial data while the mobile body is stopped, stores the data, and stores information based on the serial data. A vehicle information receiving system characterized by displaying on the display device. (2) A teletext receiving means for receiving teletext broadcasts via a television antenna or inputting various information via a telephone line; a storage means for storing data of the received teletext broadcasts and various information; A fixed ground station consisting of a conversion control means for converting stored data into serial data in a predetermined format, a transmission means for transmitting this serial data, a receiving means for receiving serial data from this ground station, and a fixed ground station for receiving serial data from the ground station; a storage means for storing data; a conversion control means for converting the stored data into the teletext standard format and superimposing this signal on the NTSC standard signal; and RF modulating the NTSC standard signal. 1. A vehicle information receiving system comprising a mobile vehicle comprising a transmitting means for transmitting the information, and a display means for receiving the RF modulated signal and displaying the received information such as teletext. (3) The vehicle information receiving system according to claim (2), wherein the signal transmission by the ground station is performed when the vehicle is stopped. (4) The vehicle information receiving system according to claim (2), wherein the signal transmitted from the ground station to the vehicle uses radio waves. (5) The vehicle information receiving system according to claim (2), wherein the signal transmitted from the ground station to the vehicle uses light. (6) The vehicle is a train in which multiple vehicles are connected;
3. The vehicle information receiving system according to claim 2, wherein each vehicle of the train is equipped with display means for displaying the text broadcast and predetermined information.