JPH0429501A - Cab guide display - Google Patents

Abstract

PURPOSE:To switch display data automatically upon modification of diagram on a specified date by providing an IC card recording data including a plurality of pieces of display data corresponding different valid intervals and a transmission station including a clock circuit for specifying the valid interval and selecting display data corresponding to a code number. CONSTITUTION:Upon insertion of an IC memory card 20 into a card holder 21, data stored in the IC memory card 20 can be entirely read out through a transmission interface 13 into a CPU 6A in a transmission station 3A. A code number setter 2 sets a code number which is then fed through an I/O circuit 8 into the CPU 6A. The CPU 6A reads out display data corresponding to the code number and scroll number based on a data(or time) prepared by a clock circuit 7. The display data is transmitted through the I/O circuit 8 to each display 4 whereas only a set number of scroll(or display time) is displayed.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an in-vehicle guidance display device, and particularly to an in-vehicle guidance display device that can automatically switch display data corresponding to a plurality of validity periods. It is.

[Prior art] Figure 5 shows, for example, "Mitsubishi Electric branch shaft J (1987, 61st
FIG. 2 is a configuration diagram showing a conventional in-vehicle guidance display device described on pages 8 to 13 of Vol. 2, No. 2).

In the figure, (1) is a train in which a plurality of vehicles are connected. (2) is a code number setter that sets a code number to specify display data; (3) is a transmission station that selects and reads display data corresponding to the code number; these code number setters ( 2) and the transmission station (3) are provided in the first car of the train.

Note that the code number setting device (2) may be built in the transmission station (3), and if a train monitoring device (not shown) is installed, the train monitoring device can be installed in the code number setting device (2).
) functions can be substituted.

(4) is a display that guides and displays the display data selected and transmitted by the transmission station (3) for each vehicle;
) and each display device (4) is a transmission line run through to transmit and receive data.

FIG. 6 is a block diagram showing the configuration of the transmission station (3),
(6) is a CPU that controls the entire transmission station (3); (8)
is the data (code number) from the code number setter (2)
(9) is a transmission interface for transmitting selected display data to the display (4); (10) is a temporary storage for input/output data and data during arithmetic processing. RAM, (11) is the transmission station (3
ROM (12) is a ROM in which a program for instructing the operation of ) and display data corresponding to the code number are stored in advance, and (12) is a CPU (6)
This is a bus for connecting to and operating in chronological order.

FIG. 7 is an explanatory diagram showing the format of data stored in the ROM (11), and A to D indicate addresses. The code numbers and the display data corresponding to each code number are arranged in the order of addresses A to B4''.
For example, data corresponding to other stations is arranged in addresses C to D.

Next, the operation of the conventional in-vehicle guidance display device will be described with reference to FIGS. 5 to 7.

First, a code number and display data are recorded in advance in the ROM (11) in the transmission station (3) in the format shown in FIG.

When a crew member such as a driver or conductor operates a setting switch (not shown) corresponding to the train's route and destination, the code number setting device (2) transmits the predetermined code number to the transmission station (3). ).

As a result, the CPU (6) in the transmission station (3) stores display data such as the destination station corresponding to the code number in the ROM (11
) and from the transmission interface (9) to the transmission line (
5) to a display device (4) installed in each vehicle, and displays desired guidance to passengers and crew members.

The ROM (11) that stores display data is, for example, an IC.
If the entire display data is changed due to a timetable revision, etc., remove the IC card containing the display data from the IC socket, and insert an IC card with different display data.
A new card is inserted into the IC socket.

Generally, the display data must be changed before the first train departs on the day of the schedule revision, and must be replaced with the next day's display data after the day's service ends. Therefore, each transmission station of many trains (
3) In order to change the display data in a short time, several hundred
People are exchanging IC cards overnight.

For this reason, a huge amount of labor and expense is required, and the ROM
During the replacement of (11), there is a possibility that parts such as other ICs may be damaged or incorrectly inserted, resulting in a problem of reduced reliability in terms of quality.

In order to solve this problem, for example, patent application No. 62-281053
As disclosed in the specification, the transmission station (3) has a built-in clock circuit, and display data corresponding to date and time information is stored in the ROM.
A device that selects from (11) has been proposed.

However, in general, the amount of information that can be stored in the ROM (11) is small, and if the information needs to be changed, it is necessary to replace the mounted IC in the same way as described above.

[Problems to be Solved by the Invention] As described above, in the conventional in-vehicle guidance display device, the IC card in the ROM (11) is replaced in order to change the display contents, so a large number of transmission stations (3 ), it requires a lot of effort and there are restrictions on the exchange time.
There are problems in that the socket etc. may be destroyed or insertion errors may occur.

This invention was made in order to solve the above-mentioned problems. 5) It increases the amount of recorded information and reduces the need for changes, and also automatically displays information when the schedule changes at a predetermined date and time. An object of the present invention is to obtain an in-vehicle guidance display device that can switch data.

[Means for Solving the Problems] The in-vehicle guidance display device according to the present invention has an I/O device in which data including a plurality of display data corresponding to different validity periods is recorded.
The IC memory card is equipped with a C memory card, a card holder for reading data from the IC memory card, and a transmission station that includes a clock circuit for specifying the validity period and selects display data corresponding to a code number.

[Operation] In the present invention, a plurality of display data corresponding to the validity period of a diamond known in advance is stored in an IC memory card, and display data within the validity period is automatically switched and displayed. Furthermore, if the entire display data needs to be changed, the IC memory card inserted into the card holder can be simply replaced.

[Example] Hereinafter, an example of the present invention will be described with reference to the drawings. 1st
The figure is a configuration diagram showing one embodiment of this invention, (3^)
corresponds to transmission station (3), and (1), (2>, (4)
) and (5) are the same as above.

(20) is an IC memory card in which data including a plurality of display data corresponding to different validity periods is recorded; (21)
is a card holder that reads data from an IC memory card, and the card holder (21) is connected to the transmission station (3^).

FIG. 2 is a block diagram showing the configuration of the transmission station (3^) in FIG. 1, where (6^) corresponds to the CPU (6),
(8) to (12) are the same as described above.

(7) is a clock circuit that outputs current date information and time information for specifying the validity period, and is connected to the CPU (6^) via the bus (12). (13)
is a transmission interface for receiving data read from the card holder (21) and importing it into the CPU (6^).

FIG. 3 is an explanatory diagram showing an example of the format of data stored in the memory space in the IC memory card (20), and each data is divided into blocks B1, B2, . . . for each valid period.
・It is classified as. Display data to be displayed within each valid period is recorded in each data block together with a code number and the number of scrolls.

In this case, a valid period is recorded in the first address part of each data block, and then a plurality of data consisting of a code number, scroll count, and display data are recorded in the order of the code number.

Note that the order of each data is not limited to the example shown in FIG. 3, and can be arranged arbitrarily. Furthermore, instead of the number of scrolls, data corresponding to the display time may be recorded.

Next, the operation of the embodiment of the present invention shown in FIGS. 1 to 3 will be described.

First, since the date and time of the timetable revision, etc. and the display data after the change are known in advance, as shown in FIG. 3, the data block B1. and second
Data blocks 82 and the like including the validity period and display data are sequentially recorded on the IC memory card (20).

Place this IC memory card (20) in the card holder (21)
When inserted into the IC memory card (20), all data recorded on the IC memory card (20) can be read by the CPU (6^) in the transmission station (3^) via the transmission interface (13).

The data read at this time is, for example, RAM (10
) may be recorded.

First, a code number is set by the code number setter (2) and inputted to the CPU (6^) from the input/output circuit (8). The CPU (6^) selects a data block based on the date (or time) created by the clock circuit (7), and selects display data and scroll data corresponding to the input code number from among the data blocks. Read the number of times.

That is, the CPU (6^) controls the card holder (21) via the bus (12) and the transmission interface (13), reads data within the corresponding code number from the IC memory card (20), This data is read through the transmission interface (13) and the bus (12).The display data is then transmitted to each display (4) through the input/output circuit (8) and transmission line (5). , the scrolling number (or display time) that has been set is displayed.Therefore, the display data guided and displayed on the display (4) is automatically switched according to the valid period.

At this time, the storage capacity of the IC memory card (20) is R
Since it is much larger than the OM (It), it is possible to record a large amount of data, and there is almost no need to change the entire data, and even if the data needs to be changed, the IC Since the memory card (20) is simply removed from the card holder (21) and another IC memory card (20) is inserted, it can be replaced extremely easily, and there is no risk of damage to other parts or mistakes in the replacement operation. I don't even invite you.

In the above embodiment, data blocks are classified by validity period as shown in FIG. 3, but as shown in FIG. ', B2', . . . may be closed.

In this case, if the set code number is within the valid period, the display data will be displayed, and if it is not within the valid period, it will be regarded as an input error and will not be displayed. Furthermore, in the case of Fig. 3, only display data within a valid period at a certain point in time can be read, whereas in the case of Fig. 4, display data corresponding to one code number is always read. be able to. Therefore, one piece of display data can be used overlappingly depending on the validity period.

In addition, although the validity period corresponding to each display data has been set, instead of the data indicating the validity period, data indicating regular use or temporary use is set in advance, and when entering the code number, it is necessary to set the data indicating regular use or temporary use. It is also possible to select whether it is for temporary use or for temporary use.

In this case, if regular use is selected, the validity period is set to a long time (or indefinitely), and if temporary use is selected, the validity period is divided into details such as weekly or monthly. Then, when entering the code number, you can select whether it is for regular use or temporary use.

Further, although the code number setter (2) is provided separately from the transmission station (3) in FIG. 1, it may be included in the function of the transmission station (3).

In addition, if the display (4) of the leading vehicle is a touch panel, the function of the code number setting device (2) can be replaced by the display (4), and the code number can be entered from the display screen. After confirming the displayed data on the screen, guidance can be displayed on each vehicle.

Furthermore, in the above embodiment, after the code number is input, I
Although the data in the C memory card (20) is read out, the data in the IC memory card (20) may be read out in advance into the non-volatile RAM (10).

In this case, after reading the data, the IC memory card (20
) can be removed from the card holder (21), so data corresponding to multiple trains can be changed simultaneously using one IC memory card (20).

[Effects of the Invention] As described above, according to the present invention, data including a plurality of display data corresponding to different validity periods can be stored in an IC with a large storage capacity.
A card holder that stores data in a memory card and reads data from the IC memory card, and a transmission station that includes a clock circuit for specifying the validity period and selects display data corresponding to the code number, Since a plurality of display data corresponding to the validity period are automatically switched and displayed, it is possible to obtain a safe and economical in-vehicle guidance display device without spending much effort.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a block diagram showing the structure of the transmission station in FIG. 1, and FIG.
FIG. 4 is an explanatory diagram showing another embodiment of the data format. FIG. 5 is a configuration diagram showing a conventional in-vehicle guidance display device. FIG. FIG. 5 is a block diagram showing the configuration of the transmission station, and FIG. 7 is an explanatory diagram showing the data format of the ROM in FIG. 6. (2... Code number setter (3^... Transmission station (4)... Display (7)
Clock circuit (20...IC memory card (21...Card holder) In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Scope of Claims] An IC memory card in which data including a plurality of display data corresponding to different validity periods is recorded, a card holder for reading the data from the IC memory card, and a card holder for specifying the display data. A code number setter that sets a code number; a transmission station that includes a clock circuit that specifies the validity period and selects the display data that corresponds to the code number; and a display that displays the selected display data. An in-vehicle guidance display device equipped with and.