JPS58100892A - Free pattern information board control system - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a free pattern information board control system for T-displaying traffic information, etc.

Since free pattern information boards installed on expressways and the like consist of one character made up of a plurality of dots, all the dot information is transferred from the center side to the terminal side for display. Therefore, even if the display frequency is high and the display pattern is fixed, display information consisting of dots corresponding to the total number of dots on the free pattern information board will be transferred each time the display is performed, and the transfer processing time will be It had the disadvantage of being long.

The present invention aims to reduce the processing burden on the center side and shorten the transfer processing time by commanding a display pattern from the center side using the - code and displaying it on a free pattern information board. . Examples will be described in detail below.

FIG. 1 is a block diagram of an embodiment of the present invention.
2 is a display drive unit, 3Fi embedded storage unit, 4 is a microprocessor, 5 is a memory for storing microprograms, 6 is a pattern storage unit, and a read-only memory (
It is composed of a fixed part 6a in which a predetermined number of display patterns are stored, and a random access memory (RAM) that can be read and written, and the display patterns are written from the center side. It is configured by a variable part 6b that can be adjusted. Reference numeral 7 designates a test section for checking display contents, 8 a transmitting/receiving section, 9 a transmission path, and 1O a center.

The display section 1 is composed of a light emitting element such as a dot-compatible incandescent lamp or an inverted display element, and the display drive section 2 operates according to the stored contents corresponding to the display storage section 30, and the display section 1
For example, a message such as "Congestion in the direction of rAB" is displayed.

FIG. 2 shows an example of the data format sent from the center 10. Fixed pattern mode (a), 7-way pattern mode (g)), registered free pattern mode (c), and variable pattern mode (d) are 4 bits. It is specified by the finger and foot information.

The microprocessor 4 of the terminal decodes the mode designation information received from the center 10 by the transmitter/receiver 8, and reads @0011.
In the case of ', the fixed pattern mode is set, so the fixed pattern is read from the fixed section 6a of the pattern storage section 6 based on the code data and added to the display storage section 3. Therefore, a pattern corresponding to the code data is displayed on the display section l.

If the mode specification information is "@0101", it is a free pattern mode, so the microprocessor 4 adds dot data to the display storage section 3 and causes the display section 1 to display a display pattern based on the dot data transferred from the center 10. .This is similar to the conventional display control method.

If the mode designation information is @011G', it is the registration free pattern mode, so the microprocessor 4 writes dot data to the address corresponding to the code data in the variable section 6b of the pattern storage section 6. That is, the display pattern based on the dot data from the center 10 is written and registered in the variable section 6b.

The mode specification information is "@1001" indicating variable pattern mode, and the code data is registered free pattern.
If the code data is the same as the code data in the case of ";D," the contents previously registered in the variable section 6b are stored in the microprocessor 4.
The data is read out and added to the display storage section 3 under the control of , and a variable pattern display is performed.

The fixed part 6a and the variable part 6b of the pattern storage part 6 are constituted by a random access memory (RAM), and at the time of initial setting, mode designation information is set as the initial setting mode from the controller 10, and a fixed pattern of code data and dot data is sent out. It is also possible to write the dot data received in the microprocessor 4 initial setting mode into the area of the fixed part 6a corresponding to the code data. Therefore, from then on, the fixed pattern mode and code data will be transferred to the center 10.
A fixed pattern can be displayed simply by sending it from .

Furthermore, when there are multiple terminals, by sending data with terminal addresses added from the center 10, it is possible to select a terminal and display a desired pattern. In that case,
It is only necessary to add a terminal address detection function to the transmitting/receiving section 8, and techniques in various data transmission systems can be applied.

As explained above, in the present invention, when the fixed pattern mode or the variable pattern mode is specified, dot pattern data is read out from the fixed II 5@a or the variable part 6b according to the code data and displayed. Part l
Since there is no need to transfer information on all dots to be displayed from the center 10, the processing load on the center 10 is reduced and the transfer processing time is advantageously shortened. Therefore, when a large number of terminals are distributed along a road to display various types of traffic information, efficient display control is possible.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of the present invention, and the first intention is an explanatory diagram of an example of a transfer data format. 1 is a display section, 2 is a display drive section, 3 is a display storage section, 4 is a microprocessor, 5 is a memory, 6 is a pattern storage section,
6& is a fixed part, 6b is a variable part, F is a test part, 8 is a transmitter/receiver part, 9 is a transmission line, and 10 is a center. Patent Applicant: Fujitsu Limited Patent Attorney Hisashi Tamamushi (3 others) Fig. 1, 1:~e Fig. 12

Claims (1)

[Claims] Traffic information etc. will be displayed on the display of the terminal according to the information from the center.
! ! In the free pattern information board control method shown below,
The terminal is provided with a pattern storage section consisting of a fixed section for storing a fixed pattern and a variable section for writing a variable pattern sent from the center according to the mode specification, and a pattern storage section is provided in which the pattern storage section stores a fixed pattern and a variable section writes the variable pattern sent from the center according to the mode specification and code data. , displaying the dot pattern data read from the fixed part or the variable part in addition to the display part, and when the mode designation is free pattern mode, displaying the dot pattern data from the center in addition to the t-display part; Free pattern information board control method characterized by: