JPH03198200A - Traffic information offering device - Google Patents

Abstract

PURPOSE:To quickly obtain unscheduled information such as a sudden event, etc., at a low in addition to information by selection of a pattern stored in advance by providing a data receiving means, a character code discriminating means, a character code dot data converting means, a display pattern converting means and a display means. CONSTITUTION:By a character code discriminating means 22, whether received data is a character code or a pattern number is discriminated, and in the case of the character code, it is converted to dot data by a character code dot data converting means 23 and displayed, and in the case of the pattern number, it is converted to a display pattern by a display pattern converting means 24 and displayed. In such a way, by displaying one of characters sent from the inside and the outside on a pattern selected by designation from the outside from in the patterns stored in advance, unscheduled information such as a sudden event, etc., can be obtained quickly and at a low cost in addition to information by selection of the pattern stored in advance.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a traffic information providing device installed on a road for providing traffic information etc. to drivers of automobiles.

BACKGROUND OF THE INVENTION Conventionally, this type of traffic information providing device has been divided into two types: one that displays the contents of a pattern selected from pre-stored patterns according to an external designation, and the other that displays the contents of a pattern sent from an external device. They are divided into , and are used differently for each purpose.

Problems to be Solved by the Invention However, in such conventional traffic information providing devices, when displaying the contents of a pattern selected from pre-stored patterns by external designation, the provided contents are fixed. It is not possible to provide unplanned information such as unexpected events.

On the other hand, those that display the pattern contents sent from outside,
There are problems in that the amount of data to be sent and received is enormous, so communication takes time, and the equipment for sending and receiving is complicated and expensive.

The present invention solves these conventional problems,
By displaying either the contents of the pattern selected from the pre-stored patterns specified by an external device or the characters (kanji) sent from the external device, information based on the selection of the pre-stored pattern can be obtained. The object of the present invention is to provide an excellent traffic information providing device that can provide unexpected information such as unexpected events quickly and at a low cost.

Means for Solving the Problems In order to achieve the above object, the present invention uses a character code determining means to determine whether received data is a character code or a pattern number, and if it is a character code, converts it to dot data. If it is a pattern number, it is converted into a display pattern and displayed.

Effect of the present invention With the above-described configuration, the present invention displays the contents of a pattern selected from among pre-stored patterns by designation from the outside and characters (kanji) sent from the outside. In addition to providing information by selecting patterns that are available, unexpected information such as unexpected events can be provided quickly, and the cost required for this is also low.

Embodiment FIG. 1 is a block diagram of an embodiment of the traffic information providing device of the present invention.

In this figure, 21 is a data receiving means which extracts and stores an intersection number from received data. Reference numeral 22 denotes a character code determination means that determines whether the data stored in the data receiving means 21 and outputted therefrom is a character code or a pattern number, and outputs the data to the corresponding output terminals. Reference numeral 23 denotes a character code/dot data converting means which converts the character code signal from the character code determining means 22 into corresponding dot data and outputs it. Reference numeral 24 denotes a display pattern conversion means, into which the pattern number signal from the character code determination means 22 is input, converts it into a corresponding display pattern, and outputs it. 25 is a display means installed on the road, which includes a character code/dot data conversion means 23 and a display pattern conversion means 2.
4 output signal is displayed on the road.

FIG. 2 is a block diagram of an example of a device embodying this embodiment.

In this figure, 1 is a microprocessor (hereinafter referred to as CPU).
), and the CPU has program memory (RO
M, RAM) 2 is connected.

3 is a pattern number corresponding display pattern memory (ROM), 4 is a Kanji font data memory (ROM), 5 is a buffer memory (RAM), and 6 is an I10 port, each of which is connected to the CPUI. The I10 boat 6 inputs a pattern number signal and one character code signal from the outside, is connected to a display section 7, and outputs data to the display section 7 via the CPU 1.

FIG. 3 shows an example of the data structure and character structure of the pattern number signal and one-character code signal.

Next, the operation of the embodiment will be explained with reference to the flowchart of FIG.

The CPUI constantly checks the presence or absence of received data through the I10 port 6 (step 11).

When the CPU confirms that the intersection number has been received, the CPU determines whether each byte of received data is accurate as an intersection number (Step 12). If it is accurate, it stores the data in the buffer 5 (Step 13); if it is not accurate, the CPU The received data is ignored and blank data is stored in the buffer 5 (step 14). Subsequently, the CPUI receives data one byte at a time and stores the received data in the buffer 5 until the final data arrives in the received data (step 15).

Next, the CPUI determines whether the data content is a pattern number or a character code from the header of the received data (step 16).
In case of pattern number, pattern number corresponding display pattern memory 3
The display pattern data is read out and stored in the buffer memory 5 with reference to (step 19). If the received data is a character code, read out the dot data corresponding to the character code in the buffer 1 memory 5 from the kanji font data memory 4 one character at a time (step 17), and then continue reading until the final data (step 17).
Step 18) Store the dot data in the buffer memory 5.

The CPU reads the buffer memory 5, outputs the dot data to the display section (step 20), and displays either the contents of the pattern selected by the external designation or the characters (kanji) sent from the external.

The CPUI maintains the current display until the next time it receives data.

As described above, according to this embodiment, by having means for storing display pattern contents corresponding to pattern numbers for necessary patterns and a means for storing character (kanji) font data corresponding to character (kanji) codes, the display pattern contents can be stored in advance. It is possible to display either the contents of a pattern selected from among the patterns specified by an external device or the characters (kanji) sent from an external device, and in addition to providing information by selecting a pre-memorized pattern, it can also display unexpected events. Unscheduled information provision such as this can be realized quickly and at low cost.

Effects of the Invention The traffic information providing device of the present invention uses a character code determining means to determine whether received data is a character code or a pattern number,
Character codes are converted to dot data and displayed, and pattern numbers are converted to display patterns and displayed, so external specifications can be selected from pre-stored patterns. can display either the content of the selected pattern or the characters (kanji) sent from an external source, and in addition to providing information by selecting a pre-memorized pattern, it is also possible to quickly provide information for unplanned events such as unexpected events. This has the effect of being able to be realized at a low cost.

[Brief explanation of drawings]

Fig. 1 is a block diagram of an embodiment of a traffic information providing device of the present invention, Fig. 2 is a block diagram of an example of a device embodying this embodiment, and Fig. 3 is a pattern number in the same embodiment of the present invention. FIG. 4, which is a diagram showing the data structure and character structure of the signal and character code signal, is a flowchart for explaining the operation in the same embodiment. 1... Microprocessor (CPU), 2.
...Program memory (ROM, RAM), 3
...Display pattern memory corresponding to pattern number, 4...
...Kanji font data memory (ROM), 5.
...Buffer memory (RAM), 6...
・I10 port, 7...Display section, 21...
... Data receiving means, 22 ... Character code discrimination means, 23 ... Character code/dot data conversion means, 4 ... Display pattern conversion means, ...・Display means.

Claims (1)

[Claims] data receiving means for extracting and storing an intersection number from received data; character code determining means for inputting an output signal of the data receiving means and determining whether the data is a character code or a pattern number; and inputting the character code signal. character code/dot data conversion means for converting into corresponding dot data; display pattern conversion means for inputting the pattern number signal and converting it into a corresponding display pattern; and an output signal of the display pattern conversion means and the character code. A traffic information providing device comprising an output signal of a code/dot data conversion means and a display means for displaying the output signal on a road.