JPS6326849Y2 - - Google Patents

Description

[Detailed explanation of the idea]

This invention is based on the destination or stop of a train, bus, etc.
This relates to a station name display that electronically displays station names for fare changes, etc. Conventionally, this type of display mainly uses a curtain-type display device, in which the station names printed on the curtain are sequentially displayed by winding the curtain manually or electrically. However, the number of stations that can be printed on one curtain is small, and the curtain becomes dirty and difficult to see. It had many practical flaws, such as the time it took to display a given station name, the large size of the device, and the tendency for mechanical parts to break down. Taking advantage of the remarkable progress made in electronics, various methods of displaying station names with electric lights have been devised and are being put into practical use. Most of these methods involve combining several light points to form a character pattern.The method of combining light points is stored for each character in a semiconductor memory, and the characters necessary to display the station name are read out from the memory. , now has an electronic display. Therefore, it has the great advantage of having no moving parts and operating entirely electronically, which means it has fewer failures, is small, lightweight, and can instantly display a large number of station names at any time. However, station names vary in the number of characters, ranging from one character such as ``Tsu'' to two characters such as ``Tokyo'' and ``Osaka,'' and even ``Nagoya.'' When displaying data for the necessary character patterns is read out from memory individually and combined to display a station name, how to adjust the character arrangement due to the difference in the number of characters is the key to displaying the station name in an orderly manner and avoiding mispronunciations. This is very important in terms of prevention, ease of use, and economical efficiency. The present invention was developed specifically in this regard, and its major feature is that it uses a microcomputer to automatically calculate and set the space required to determine the character arrangement according to the number of displayed characters. . Figure 1 shows the circuit configuration of the station name display of the present invention. 1 is a character pattern memory that stores the character pattern of the station name; 2 is a service route memory that stores data specifying the content to be displayed corresponding to each station on each service route; 3 is a memory that stores a predetermined character pattern in response to a station name signal; A control section 4 is a station name display section that reads data necessary for displaying station names from the operating route memory 2 and character pattern memory 1 and controls the station name display. Although the dot-type electronic display tube 5 is used to display characters, the number of displayed characters is not constant as described above, and the maximum number of characters that can be displayed must be determined empirically. In the embodiment, the dot configuration for expressing one character is 16 x 16 (dots) (the minimum dot that can express the required kanji character), and the maximum number of displayable characters mo is 6 characters. When 6 more characters are displayed,
In order to make it easier to see, a space equivalent to one dot was provided between the letters, 16 dots in the horizontal direction and 101 dots in the vertical direction. FIG. 2 shows an example of character display and the entire dot configuration of the dot-type electronic display tube 5. Grid points 19 indicate display dots. The control unit 3 employs a microcomputer system, and the CPU 10 sequentially reads processing instructions to the CPU 10 stored in the ROM 11 and executes the instructions. RAM used for work and data editing, used to store calculation results and various constants during the process in which the CPU 10 executes processing instructions.
12 were deployed. Furthermore, the input port 14 is used for inputting the designated data (route signal) of the operating route and the station signal for each station, and the input port 14 is used for interface with the character pattern memory 1, the operating route memory 2, and the display section 4. Output port 13, 15, 16
was deployed. CPU 10 and each component circuit 11 to 16
are connected by bus lines 18 including a data bus, an address bus, and a control bus. The control section 3 and the display section 4 are designed to operate in synchronization with the control signal A17.
The display pattern data supplied from the display pattern data is written into the display pattern storage memory 8 via the memory write/read circuit 9. The storage capacity and bit configuration of the display pattern storage memory 8 are as follows:
16 corresponding to the dot configuration of the dot type electronic display tube 5
(bit) x 101 (word). Further, the data in the data bit of the memory corresponding to the dot emitted by the dot type electronic display tube 5 is made to correspond to the logic signal "1". By doing this, the address information signal issued by the write/read circuit 9 is transmitted to the display pattern storage memory 8 and the Y driver 6.
If the display pattern data is supplied to the dot type electronic display tube 5 via the X driver 7 at the same time, the display pattern data is correctly displayed at the display position specified by the Y driver 6. The character display pattern data is repeatedly read out from the display pattern storage memory 8 at a high speed in a fixed cycle by the memory write/read circuit 9. Data regarding the station name display is stored in the character pattern memory 1 and the operating route memory 2 as shown in FIGS. 3 to 5. In this example, the dot configuration of one character is 16 x 16 (dots), so correspondingly, the individual character patterns are 8 x 16 (dots) as shown in Figure 3.
(bit) x 32 (word), and memorize all the characters necessary to display the station name without duplication as shown in Figure 4, character designation address 21 (2 digits hexadecimal number)
The required character pattern is read out by On the other hand, the operating route memory 2 stores character designation data to be displayed corresponding to each station for each route as shown in Figure 5.
The route number is stored as a 3-digit decimal number, the route number is stored as a 2-digit decimal number, and the hexadecimal numbers A _H , F _H , and _DH are used as control codes.
It is stored in the format used for route signals, route data delimiters, and station name data delimiters. Therefore, to read character pattern data, the CPU 10 converts the 3-digit decimal character designation data from the route memory 2 into a 2-digit hexadecimal character designation address, and stores the data in the address section of the character pattern memory 1. This is done by supplying.
The data corresponding to the station signal for each station is the station name data delimiter D _H in the operating route memory 2. Next, the operation of the station name display according to the present invention will be explained using the flowchart shown in FIG. The operation starts by turning on the power switch. When the CPU 10 executes an instruction, the RAM 12 has a character designation data storage area 1, as shown in FIG.
STCOUNT address for counting station signals, ROUTENO address for storing route signal data,
CHRCOUNT address to count and record the number of displayed characters m, space between characters SP1, space SP2
Assign SP1VOL and SP2VOL addresses to record the values of and set all initial values to "0". Further, blank data is also transferred to the display section 4 to clear the entire surface. Furthermore, input/output ports 13~
16 operating modes are specified and set to enable station signal interrupt processing. The flow of this station signal interrupt processing is shown in FIG. The route signal is inputted through the input port 14 and stored at the ROUTENO address location in the RAM 12. The operating route data group corresponding to the specified route signal is searched from the operating route memory 2. Search for station name display data corresponding to the station signal within the route data group searched for. The station signal is stored as count value data in the STCOUNT address of the RAM 12, and by matching this value with the count value of the station name delimiter D in the specified service route data group of the service route memory 2, the station signal is stored. Determine the station name display data corresponding to. A series of station name display data searched in this way is inputted via the input/output port 16,
Store in area 1 of RAM12. At this time, the number m of displayed characters is counted and stored in the CHRCOUNT address. In order to appropriately arrange the characters to be displayed on the display tube 5, the sizes of the spaces SP1 and SP2 between the characters are calculated according to the number m of characters to be displayed. Here SP2 is the space provided before and after the character, SP1
is the space inserted between characters. Note that these spaces are integers (including 0) that satisfy the following equation. 101−16×m=2m×SP2+C′ (1≦m≦6) C′=(m−1)×SP1+C (C: Remainder area) Table 1 shows when the number of displayed characters m is changed from 1 to 6. An example of calculating SP1, SP2, and C is shown below.

[Table] Through the series of processes so far, the preprocessing for displaying the station name has been completed, and the next step is to transfer the character pattern data and space data to the display unit 4. Note that the number m of transferred characters of the character pattern data is set in register B (RB), and the number of transferred characters is subtracted. First, transfer space data SP2. Next, the character pattern data for the first character is transferred. Transfer space data SP2 again. Subtract the number of transferred characters from RB. Transfer the space data SP1 between characters. The character designation data stored in area 1 of the RAM 12 is sequentially read out, and transfer processing is performed for all designated characters. Check the contents of RB, and if it is 0, it means that the transfer of the character pattern of all specified characters has been completed. When the transfer is completed, the process is started again (in a loop), and the search for data corresponding to the route signal and station signal and the data transfer are repeated. This has the advantage that even if an erroneous display occurs due to some kind of noise during the processing process, it can be corrected immediately. FIG. 9 shows an actual display example. As is clear from the above description, in the station name display of the present invention, the control unit 3 adjusts the number of displayed characters without storing any space data between characters in order to adjust the display form according to the number of displayed characters. A major feature is that it has a function to control the display by calculating the size of the space before and after the characters and between the characters. Therefore, when storing data in the route memory 2, there is no need to pay any attention to the display form of characters, which makes data recording easy and greatly contributes to saving memory capacity.

[Brief explanation of the drawing]

Fig. 1 is a circuit configuration diagram of the device of the present invention, Fig. 2 is an explanatory diagram of a dot type electronic display tube, Figs. 3 and 4 are character pattern recording method, Fig. 5 is a recording method of route data, and Fig. 6 is FIG. 7 is a flowchart explaining the operation of the device of the present invention, FIG. 7 is a diagram explaining the storage area of the RAM, FIG. 8 is a flowchart of interrupt processing for station signals, and FIG. 9 is a diagram showing an example of display. 1... Memory for character patterns, 2... Operation route memory, 3... Control section, 4... Display section.

Claims (1)

[Scope of utility model registration request] The character designation data for displaying the station name is read out from the character pattern memory 1 using the character designation data from the service route memory 2 that is stored for each service route, and the number of characters to be displayed for the station name is read out. The control unit 3 calculates the appropriate space before and after the characters and between the characters according to the number of characters, and transfers the data to the display unit 4 together with the character pattern display data to maintain an appropriate space according to the number of displayed characters. A station name display device characterized in that the station name is displayed by arranging characters in an orderly manner.