JPH0153797B2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention is installed in facilities such as railways, subways, monorails, etc. to convey constantly changing information to multiple locations at the same time. Guidance to passengers about the next station, such as displays such as ``Next is Tokyo,'' and warnings to passengers as necessary;
For example, the present invention relates to a display device that displays a message such as "Be careful when opening the door."

(Prior art and its problems) As a conventional guide display device of this type, there is a
No. 42091 ``In-vehicle display device'' and Japanese Patent Application Laid-open No. 59-9695 ``Guidance display device.'' However, these devices are mainly guide display devices installed for each individual device, and are economically disadvantageous, especially when displaying the same information at multiple locations such as railway cars and stations.

(Means for Solving the Problems) The present invention is used, for example, to display constantly changing information at multiple locations on a train that is organized, can be constructed economically, and is susceptible to noise interference. This device provides a display device that is difficult to receive and is composed of a command device, a plurality of controllers, and a plurality of display devices, and the command device and the controllers are connected through each other's input/output means,
The controller and the display are connected through each other's input/output means, and the controller includes a central processing unit and its peripheral memory, has a memory that stores the content to be displayed in code, and an input means for external signals, and the controller The display device includes a central processing unit and its peripheral memory, and has a ROM that stores display data in patterns and a ROM that stores code.The display device includes a central processing unit and its peripheral memory, and stores display contents in patterns. The controller's central processing unit inputs operational information such as destination codes and station codes, and external signals such as vehicle information such as door opening/closing operations, starting, and stopping. When received from the means, the display device determines whether the display is to be switched, reads out the corresponding display code, and sends it to the controller.

(Function) The function of the present invention is that a display switching signal is issued from the command device based on an external input signal that commands an opportunity to be displayed, and a display code that is the content of the memory is read out based on this switching signal. and transmitted to each controller. Each controller retrieves display data from the data memory using the display code, and transmits the contents to each display. Each display displays a pattern based on the sent contents. Generally, the command unit and the controller are installed remotely, so there are many noise sources between them, which can cause problems.
In this invention, data is transmitted between the command unit and the controller using a display code with a reduced amount of information, so the number of connection codes is small, and it can be transmitted at low speed and is not affected by noise. hard. On the other hand, pattern data containing a large amount of information is transmitted at high speed between the controller and the display, which are relatively close to each other and are less affected by noise. On the other hand, data to be displayed in between displays or pattern data to be repeatedly displayed with the same content can be stored in the display data memory of the display unit as general-purpose data in advance, so that the display can be switched instantly. It can also be processed without increasing the amount of data transmitted from the command unit.

(Example) Here, as an example of the display device of the present invention,
This will be explained using an example installed inside a train.

FIG. 1 shows the overall configuration of the device of this invention. The command device 1 is installed in a specific car of a train, preferably in a car with a driver's seat. Other than that, each controller 201, 202...20n provided for each vehicle is connected to the signal line 101.
connected through. Each controller 201, 202,
...20n is connected to a plurality of display devices 3, respectively. That is, the controller 201 has displays 311, 3
12...31n is the signal line 2011, 2012...
201n and configured as shown in the figure.

The details of each device will be explained below for each configuration.

Command Unit An example of the internal configuration of the command unit 1 is shown in FIG. In this example, it is configured with a microcomputer, and in addition to the central processing unit that sequentially reads and decodes programs, so-called CPU5,
Readable/writeable memory (RAM) 7 used for work and data editing used in various calculation processes of
Memory (ROM) that stores control programs
6. A memory (ROM) 8 storing station name display codes and the like is connected to the data bus 11. In order to generate the station code, destination code, door opening/closing signal, etc., which are display switching signals in this embodiment,
The input terminal group 4 for inputting signals from the outside is an interface input/output port 9 (hereinafter referred to as I/O9).
The input/output terminals Tx, Rx, and GND terminals are connected to the interface input/output port 10 (hereinafter referred to as I/O
(referred to as 0). I/09, I/O1
0 is also connected to the CPU 5 via the data bus 11. Furthermore, with recent technological advances, it is obvious that a CPU in which some or all of these elements are integrated may be used.

External input signals include operation information determined from train operation, such as a destination code indicating the train's destination, a code for each station, and a code for each car type, as well as operational information such as door opening/closing operations during operation and switch operation in an emergency. There is vehicle information related to the vehicle, such as accompanying control information and status information caused by the running state of the train, such as starting and stopping the train. The operation information is not limited to the method of inputting it each time, but it is also possible to easily obtain information transmitted from equipment installed along the railway line, for example, by using a guided radio system. Further, the vehicle information can be obtained as a signal by directly connecting to each operation switch, control relay, etc. Further, start and stop signals can be obtained by detecting the state from the vehicle's control circuit.

Controller An example of the internal configuration of the controller 2 is shown in FIG. This example is also configured using a microcomputer.
The CPU 12, ROM 13, RAM 14, and data memory ROM 15 are connected by a bus 18. Input/output terminals for information exchange with command unit 1 T _x , R _x , GND
The terminal is connected to the I/O 16, and the information output terminal 19 for the display 3 is connected to the I/O 17.
O16 and I/O17 are connected to CPU 12 via bus 18. Like the controller, the configuration of each of these elements can be changed partially or completely using an integrated CPU. Note that as information output terminals to each display 3, output terminals 191, 192...19n are assigned to the displays 311, 312...31n.

Display Device An example of the internal configuration of the display device 3 is shown in FIG. This example also assumes that the control unit is configured by a microcomputer, including a CPU 20, ROM 21, RAM 22, display data memory ROM and RAM 23, a plasma dot matrix panel (hereinafter referred to as PDP) 24 as an optimal embodiment, and a controller 2. It is connected to the information input terminal 26 of the. I/O25 is
They are connected via bus 27.

PDP FIG. 5 shows the PDP 24 of each display 3. To explain the case of displaying 8 characters with 16 x 16 dots per character, the horizontally extended electrode Y ₀ indicates the vertical position.
16 ~Y ₁₅ , 16 vertically extended electrodes X _{0 ~}
= 135 pieces = X _o-1 . Electrodes Y ₀ ~ Y ₁₅ and electrodes X ₀ ~
It is provided to intersect with X _o-1 , and characters are displayed by selectively emitting light at each of these intersection points.
In the figure, the intersection points, which are black dots (.), are light-emitting display dots.

Display information Fig. 7 shows an example of the data structure of the memory (ROM) 8 of the controller 1, and Figs. 8, 9, and 10 show the ROM 152 in the data memory ROM 15 of the controller 2.
FIG. 11 shows an example of its data structure.
An example of the data structure in .32 is shown below.

As shown in Fig. 7, the ROM 8 contains destination codes that serve as operation data, such as A01, and station codes 001, 002...00 that serve as station routes for A01.
5 are stored sequentially and read out sequentially when switching displays. Also, general-purpose data that is routinely used is stored in a predetermined memory address, and a display code is generated for interrupting display when a door is opened, etc.

As shown in FIG. 8, the ROM 15 in the data memory includes a pattern memory (ROM) 151 that stores dot patterns of each content as data, and a code memory (ROM) 152 that stores display content corresponding to the display code as a code. It consists of As shown in FIG. 9, the pattern memory 151 can read the pattern data of its contents using a content code. The code memory 152 is the 10th
As shown in the figure, for example, a content code 11 for "East", a content code 04 for "Kyoto", and a content code 15 for "Station" are stored in correspondence to a display code 000 for displaying "Tokyo Station". .

ROM2 in the display data memory 23 of the display unit 3
32, as shown in Fig. 11, is a device in which general-purpose data that is displayed with the same content many times during operation is stored in advance, and pattern data of display contents is stored in correspondence with a general-purpose code. You can directly read the code and display the contents as a pattern.

Operation 1 Command unit The command unit 1 receives operation information such as destination code and station code transmitted by guided radio system, and vehicle information generated by door opening/closing operations during operation, and executes the processing program in ROM 6. Depends on the content
The CPU 5 performs judgment processing, determines when to switch the display, and when it is determined that it is the time to switch, reads the display code from the memory (ROM) 8 and sends the display code to the controller 2 via the I/O 10. . Since it is economical to _reduce the number of signal connection lines between vehicles, the signal line ₁₀₁ in FIG. By providing a ground terminal GND, it becomes possible to communicate information through serial transmission.

Regarding reading of the memory (ROM) 8, for example, A0 in Fig. 7 is read from the destination code received at the starting station.
1 station code 001 is read out as the display code.
At the next station, the station code 002 of the next station is similarly read out from the received station code 001. In this way, the display code for the next station guide is read out and transmitted to the controller 2. Also, when an interrupt display is performed by opening or closing a door, etc., a display code is sent to the controller 2 through judgment processing by the CPU 5.

FIG. 6 explains an example of display switching,
The display is subdivided for train running status a).
b) shows the signal reception range at each station, c) and d) show the control status regarding door opening and closing, and e) shows the CPU
This is an example in which applicability is added to the display by the timer processing in step 5, and the display code in f) is generated from the memory 8 based on the conditions in b), c), d), and e). Also, when providing advertisement guidance, this is made possible by generating a display code for public notice at regular intervals through timer processing by the CPU 5.

2 Controller Transmit the display code from the command unit 1 to the input/output terminals R _x ,
The CPU 12 receiving the data via GND searches the ROM 15 for pattern data corresponding to the display code, composes it, and transmits the pattern data to the RAM 231 of the display data memory of the plurality of displays 3. The number of signal lines 2011, 2012, . . . , 20nn between the display device 3 and the controller 2 shown in FIG. 1 increases or decreases depending on serial signal transmission or parallel signal transmission. In addition, terminals 191, 192...19n to each display 3 are signal lines 2011,
2012...201n.

In addition, once another pattern data is sent to the display unit 3, when returning to the original display, that is, when returning to the station name display after changing the display once in the interrupt display, only the display code is displayed. This is possible by sending a display code along with the pattern data so that display commands can be sent to the device. On the other hand, in the case of an interrupt display, only a dedicated display code used for the interrupt is sent to the display device 3, and data pre-stored in the ROM 232 of the pattern memory in the display device 3 is selected and displayed. If a reading error occurs in the display code from the command unit 1,
Request retransmission of data using the input/output terminals T _x , R _x , and GND to obtain accurate data and display it.

3 Display Each display 311...31n, 321...32n, 3
n1...3nn is usually each controller 201, 202...2
Next station guidance is performed based on the pattern data transmitted from On. When displaying general-purpose data such as door opening/closing that does not require station specification, pattern data is read from the internal display data memory (ROM) 232 and warnings, guidance, etc. are displayed. The pattern data transmitted from the controller is stored in the RAM 231 and can be read out many times as long as new pattern data is not transmitted. This allows the display code sent with the pattern data to be used for the work of CPU20.
The newly sent display code and RAM 231 are stored in memory area 1 of RAM 22, which is RAM.
Compare the display contents of the RAM23 if they are the same.
Without rewriting the contents of 1, station names, etc. can be displayed simply by instructing the same display code as the interrupt display at the time of warning guidance. This is effective when changing the display for a short time while the vehicle is stopped, as shown in the example shown in FIG. 6d). Also, in the station name display, “Next wa” or “Now is 〇〇〇” or “Now is 〇〇〇”
is a general-purpose pattern that is used many times for each station.
It can be displayed by storing it in the ROM 232 and performing compositing processing with new pattern data when updating the station code. In addition, the display operation is performed by the CPU 20 and the ROM 232.
Or read the pattern data of RAM231,
Transfer this to PDP24. When the display content pattern exceeds the displayable range of the PDP 24, that is, when the display content pattern is 9 or more characters for 8 characters in this example, the display is scrolled.

The display device 3 is not limited to a plasma dot matrix type display, but may also be a magnetic reversal plate type dot matrix type display or the like.

(Effects of the Invention) As described above, the present invention has the following effects. 1) A single command device can centrally control a plurality of display devices via a plurality of controllers. 2) Since the signal transmission between the command device and the controller is performed using a display command method using display coding, the amount of data is reduced and there is no need to increase the transmission speed. Also, noise resistance has been improved. 3) If the transmission speed within the same time is increased, the display code can be sent many times, and error data can be removed on the controller side. 4) By sharing the display data memory, each display stores only the minimum necessary data, and most of the memory is in the controller, reducing the cost required to change the display contents.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an example of the guide display device according to the present invention, FIG. 2 is a block diagram showing an example of the configuration of the command device 1, FIG. 3 is a block diagram showing an example of the configuration of the controller 2, and FIG. 4 is a block diagram showing an example of the configuration of the controller 2. The figure is a block diagram showing an example of the configuration of the display device 3, FIG. 5 is a diagram showing the dot matrix display surface of the display device, and FIG. 6 is an example of the relationship between train running status, various operation-related signals, and display code display contents. 7 is a diagram showing an example of the contents of the memory, FIG. 8 is a diagram showing an example of the configuration of the display data memory 152, FIG. 9 is a diagram showing an example of the contents of the pattern memory 151, and FIG. Content code memory 15
11 is a diagram showing a storage example of the display data memory 232. FIG. 1... Command device, 2... Controller, 3... Display device, 8... Memory, 15... Data memory, 23... Display data memory.

Claims (1)

[Claims] 1. Consisting of a command device, a plurality of controllers, and a plurality of display devices, the command device and the control device are connected to each other via input/output means, and the control device and the display device are connected to each other through input/output means. The controller includes a central processing unit and its peripheral memory, and has a memory for storing the content to be displayed in code and an input means for external signals, and the controller includes the central processing unit and its peripheral memory. The display device includes a ROM that stores data to be displayed in patterns and a ROM that stores it in codes.The display device includes a central processing unit and its peripheral memory, and has a RAM that stores display contents in patterns and a ROM that stores them in patterns. When the central processing unit of the controller receives external signals such as operation information such as destination code and station code and vehicle information such as door opening/closing operation, starting and stopping from its input means, it determines whether to switch the display, A display device that performs control to read a corresponding display code and send it to a controller.