JPS61137192A - Memory writing 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] [Field of Application of the Invention] l-゛The present invention provides: - receiving and receiving transmitted character and graphic information;
Particularly related to character/graphic information display/devices that once stored in an image information storage memory, read out and displayed on the screen.
Characters to image information storage memory.

This relates to memory writing methods 2 and 1 for writing graphic information.

[Background of the invention J First, the information is transmitted to the text/graphic information display device.

This section describes the transmission method for character and graphic information (image data).

Currently, there are two types of image data transmission methods: code transmission method and photographic transmission method.

There is a hybrid transmission method.゛In the code transmission method, the color and size of characters, etc. are first determined.

Information specifying the size is transmitted, and then a character code in which a character, etc. is encoded is transmitted. In general, strings
Write the text without changing the color or size of the font.

Therefore, once the color and size information is transmitted, as long as these are not changed, it is sufficient to continue transmitting only the character code. Note that the code is transmitted using this code transmission method.

The character and graphic information that is used is hereinafter referred to as code information.

I'll do it.

Next, the photographic transmission method uses figures, etc.

This is a method of expressing and transmitting dots by the presence or absence of dots.
and information representing the color of the dot.

Information representing the color of areas with no dots is transmitted in units of dots.In actual transmission, first, the color information for several lines in the horizontal direction of the screen is fixed and transmitted in units of dots. Transmitted, then transmitted.

The pattern information at the same display position as the color information is displayed.

It is transmitted in units of bits. Note that the text and graphic information transmitted by this photographic transmission method.

is hereinafter referred to as "photographic information".

Next is the hybrid transmission method.

The transmission method is a combination of the above-mentioned code transmission method and photo graphic transmission method, and has become mainstream in recent years. ]5 Therefore, in the following explanation, character and graphic information will be referred to here.

Transmitted using the hybrid transmission method.

In other words, text and graphic information are displayed.

Even if it is code information, it is also photographic information.

However, I will explain it as something that can be received. ,! .

FIG. 2 is a front diagram for explaining a conventional memory writing method in a text/graphic information display device.

In FIG. 2, 1 is a microprocessor (No. 1).

Not shown in Figure 2. Hereinafter, it will be abbreviated as MPU.

), 2 is the address bus from the MPU.

3 is an address changeover switch, and 4 is a table.

5 is a telepijo for monitoring.

various synchronization signals required by the receiver (not shown).

A synchronization signal generating section 6 is a pattern that stores pattern information representing the presence or absence of a dot of a character or figure.

7 is a color memory that stores color information representing the color of characters, graphics, or their backgrounds; 8 is a memory control signal generator that controls writing and reading of each memory; 9; is located between the data bus 2 and the 15 pattern memory 6 and contains pattern information.

The pattern data buffer, which performs the receiving and passing.

10 is located between the data bus 2 and the color memory 7.

Color data buffer, which receives and passes color information.

11 is data from the pattern memory 6 and color memory 7, 44
12 is a video signal output terminal; 12 is a video signal output terminal; 12 is a video signal output terminal;

Now, the text and graphic information display device is text and graphic information.

When received, the code information is sent to the data node 2 via the MPU. At this time, the code information is generated by using the character code described above by the character generator.

Pattern information (represents the presence or absence of dots such as characters).

information) and then sent to the data bus 2. .

Next, the address selector switch 3 is closed to the a side by the control signal 1 from the memory control signal generator 8.

Similarly, the M signal transmitted from the MPU through the address bus 1
The PU address signal activates the address changeover switch.

Via display memory (pattern memory 6 and color memo.

13 is input into the image information storage memory (general term for image information storage memory including 7). On the other hand, the display memory and pattern data buffers 9, 8 and data backer 10 are controlled by control signals from the memory read control signal generator 8.

It is controlled. Therefore, it is sent to data bus 2.

Among the text and graphic information, pattern information is Nokuturn 211.
The color information is written into the pattern memory 6 via the data buffer 9, and the color information is transferred via the color data buffer 10.

Then, the data is written to the color memory 7 and the data is edited.

Next, text and graphics are displayed on the monitor screen (not shown).

When displaying information, first, the address is turned off by a control signal from the memory control signal generator 8.

Close the changeover switch 3 to side b. And display a.

The address generating section 4 matches the display position on the monitor screen based on various synchronizing signals from the synchronizing signal generating section 5.

A display address signal indicating the address of the corresponding display memory is generated and transmitted to the display memory via the address changeover switch 3. On the other hand, the display memory is controlled by a control signal from the memory control signal generator 8, and therefore character and graphic information (image data) is read out one after another from the display memory. Then, image data, ie, pattern information and color information, are read out from the display memory.

Red, green, and blue are synthesized by the video signal synthesis section 11.

After being converted into a video signal such as an RGB three primary color signal.

Output from the video signal output terminal 12 and displayed on the monitor screen 1.1
゜Displayed above.

Memory writing in the conventional technology as described above.

In this method, the transmitted information is photographic.

data bus first if it is fic information.

After writing the color information sent to the color memory 7 into the color memory 7, the pattern information sent next is written into the pattern memory 6.
Write them down and repeat them below.

You can just return it and write it in, but with the code information.

If so, the string continues to be displayed in the same color.

At this time, since the color information is sent only once at the beginning, it is necessary to write the data into the color memory 7 for each character, resulting in data processing.

There was a problem that the efficiency decreased and the screen display speed became slower.

Therefore, Japanese Patent Application Laid-open No. 187996/1983 has proposed a memory writing method to solve these problems.

(%Application No. 57-70373) The invention disclosed in the publication.

be. In the invention, the data to be written to the display memory.

A display memory is provided for each memory in advance.

Store each color in the register and write.

, 7 Select the desired memory address and the contents of the color register will be automatically written to the display memory.

I'm trying to keep it that way. That is, like code information.

Even if the color information is only sent once at the beginning,
All you have to do is store the color information in advance in the color register provided in the color memory, and the rest will be done automatically.

The contents stored in the color register are written to the color memory.

Since the information is read in, there is no need to perform the processing described above.

However, with this memory writing method, the following problem occurs in the case of photographic information. That is, in the case of photographic information, the color information that is transmitted first is temporarily stored in a newly provided memory for storing received data, and after the pattern information is transmitted, Read out the memorized color information and color it.

After writing it to the register, send the pattern information.

- must be stored in memory, therefore,

Data processing efficiency is low and display speed is slow.

Along with the problem of temporary storage of color information, 1, 1,
・ ８ ・ There was a problem in which memory was secured as needed.゛As mentioned above, with the conventional memory writing method.

is the origin of character and graphic information by one transmission method.

Characters by the other transmission method, although it is advantageous for inclusion.

Writing graphic information reduces data processing efficiency and slows down display speed.

There was a problem that it was a disadvantage.

[Purpose of the invention]

The present invention has been made in view of the problems of the prior art described above.

Therefore, the object of the present invention is to display character and graphic information compatible with the 4□ hybrid method.

To provide a memory writing method that can speed up screen display speed in devices without reducing data processing efficiency for both code information and photographic information. There is a particular thing.

[Summary of the invention]

Character graphics that can receive hybrid transmission methods.

The information display device displays code information and photos.

The ink information must be recorded independently in the display memory and stored for 4 degrees. Therefore, compared to a conventional device that can receive only the photographic transmission method, the storage capacity of the display memory is required to be twice as large, and the number of RAMs increases, resulting in cost.

Problems include an increase in capacity or an increase in substrate area. As a way to solve problems like this □, please use code information.

Photographic information is mixed and stored in the same RAM (for example, code information).

Pattern information in photographic information.

Both are stored in one RAM. ) There is a method. Therefore, in the present invention, the memory area of RAM.

A storage area for storing code information and a storage area for storing photographic information.

Divide into areas by address and mix code information and photographic information in the same RAM!・I try to remember it.

In order to achieve the above object, the present invention also provides a code transmission method and a photographic transmission method.

For each of these two transmission methods of power transmission type.

Memory writing circuits with the highest data processing efficiency, 5°, are each provided independently, and whether the received data is code information or photographic information, the MPU simply specifies the write destination address. Of the two write circuits described above, the circuit compatible with the transmission method, that is, the circuit with better write efficiency is automatically selected, and then the circuit with better write efficiency is automatically selected.

The data received through the channel is written to the display memory.

I made it possible to do so.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be explained with reference to FIG.

FIG. 1 is a block diagram showing one embodiment of the present invention.

It is.

In FIG. 1, 16 is a color register, and 14 is a color register.

Address decoder, 15 is a photographic memory 1 select signal, and 16 is a code memory select signal.

No. 17 is a bank selection switch, and 18 is a pattern memo.

19 is a color memory select signal.

20 is an OR circuit. Others, 1-12.

Both are the same as in Figure 2. In addition, pattern 2. ) The memory 6 and the color memory 7 are each storage areas for storing code information in one RAM.

(hereinafter referred to as the code information storage area).

Storage area for storing spiky information.

(Hereinafter referred to as the photographic information storage area.)
Two, memory areas are determined by addresses.

It is divided.

Now, the write operation of this embodiment will be explained.

do. Note that the writing operation is the same as the conventional example.

The address changeover switch 6 is closed to the α side g"1. First, the transmitted information is code information.

We will explain the case when

As mentioned above, the code transmission method starts with a sentence.

This is a transmission method in which information about the color and size of characters is transmitted, and then only the character code is transmitted. Therefore, color information is written using the color register 13, and pattern information is written using the pattern data buffer 9. Data writing/writing efficiency is maximized by writing using ζ.

Therefore, first, the MPU (not shown) operates the color register 11.
12.

The color register 13 is accessed and the first color information sent among the transmitted code information is written into the color register 13. The MPU stores code information storage areas in the pattern memory 6° and color memory 7.

An address signal corresponding to the address is sent to address data 1. Address sent to address bus 1.

The pass signal is passed through the address changeover switch 3.

When input to the turn memory 6 and color memory 7.

Both are also input to the address decoder 14. .

In address data 14, input address signal 1□'
The information transmitted is code information.

The code memory select signal 16° is output. Output code memory select.

The signal 16 is pattern data via an OR circuit 20.

It is input to buffer 9 and also to color register 1315. By inputting this code memory select signal, the data bus 2 from the MPU and the data bus of the pattern memory 6 are directly connected, and pattern information from the MPU is transmitted via these data buses.

At the same time, the color information data previously stored in the color register 15 as described above is output to the data bus ζ of the color memory 7, and is written to the code information storage area of the pattern memory 6. It is written to the 7° code information storage area. Thereafter, in the same way, each time the pattern information is written to the □ code information storage area of the pattern memory 6 and is sized appropriately, the color information data stored in the color raster 13 is output to the data bus of the color memory 7. Then, write it in the code information storage area of the color memory 7° and print it to the appropriate size. .

In this way, if color information is stored in the color register 13 in advance, the keys will continue to be colored with the same color.

Pattern memory 6ζ via pattern data buffer 9
Just write this pattern information data.

The contents of each color register are also written to all other color memories (there are several other systems of color memory, although not shown in FIG. 1).

As a result, data write processing efficiency has been significantly improved.

be done.

Next, the information that is transmitted is photography.

The case where the information is tsuku information will be explained.

The photographic transmission method is a transmission method that transmits color information for several lines and then transmits pattern information at the same display position as the color information, so real data is transmitted through a data buffer. The data writing efficiency is maximized by performing the time filling process.

Therefore, first, the MPU reads the photographic information in the pattern memory 6 and the color memory 7.

Address signal corresponding to the address of the storage area.

Send to address bus 1. The address signal sent to the address bus 1 is transferred to the pattern via the address changeover switch 3, as in the case of code information.

As well as being input to the memory 6 and the color memory 7.

It is also input to the address decoder 14. The address decoder 14 uses the input address signal to identify that the transmitted information is photographic information, and sends it to the bank changeover switch 17.

On the other hand, photographic memory select signal No. 2 15
Output. Here is the bank selector switch.

17t This is done in advance by selecting pattern memory 6, color scheme, and 1.
1.15.

The photographic memory reselect signal 15 becomes the activation signal for the bank changeover switch 17, and the color memory 7 is selected. If the butter color memory 6 is selected, a pattern memory select signal 18 is output.

Hence, color information.

When receiving data, select the color memory 7 in advance.

Write it in the bank changeover switch 17 and click.

- When receiving the pattern information, it is necessary to write data for selecting the pattern memory 6. - Therefore, assuming that color information is being received now, the color memory select signal 19 is output from the bank selector switch 17 due to the input of the photographic memory select signal 15.
Input to color data buffer 1) 10. This creates a color data buffer.

In 10, the data bus 2 from the MPU and the data bus of the color memory 7 are directly connected, and the photographic information of the color memory 7 is transferred via these data buses.

Color information is written to the information storage area.

, 16.

Also, when receiving pattern information, panning is performed by inputting the photographic memory select signal 150.

Pattern memory is selected from the selector switch 17.

The signal 18 is output and back-up via the OR circuit 20.
The information is input to the data base 7a9. As a result, from the data bus of the pattern memory 6 and the MPU.

The data bus 2 is directly connected to the data bus 2.

Photograph of pattern memory 6 via bus.

Pattern information is written to the quick information storage area.

It will be done. 1
11 Photographic information received in this way.

Receive data without temporarily storing it in memory.

This makes it possible to process data in real time.

Data processing efficiency is greatly improved. .

As described above, the image data (character and graphic information) stored in the display memory (1) is read out from the display memory during the display data reading/reading period in the same way as in the conventional example, and the video signal is synthesized. In Part 11, Pa.

Turn information and color information are combined and converted into a video signal.

After being converted, the video signal is output from the video signal output terminal 12 and 11.
.

displayed on the monitor screen. Here, the video signal synthesis section 11 also synthesizes code information and photographic information, that is, it determines the presence or absence of code information and displays it on the screen.

Code information is displayed where there is code information, and photography is displayed where there is no code information.

Video transmission so that Tsuku information is inserted and displayed.

is being converted to a number.

As described above, according to this embodiment, the MPU writes.

The image data 11 can be written into memory by simply specifying the destination address, whichever is more efficient.

Processing of data as circuits are automatically selected.

The efficiency is the best and the screen display speed is improved.

It has the effect of

[Effects of the Invention] 1. According to the present invention, code information and 7 otographs.

Hybrid that transmits mixed information with ink information.

For text and graphic information display devices compatible with transmission methods.

code information and photographic information.

The most efficient 1. .

By providing independent circuits that can write well, the processing efficiency of received data can be improved.

The idea is that it will be able to handle faster image data transmission speeds.

Both have the effect of increasing the display speed for one screen.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 explains a conventional memory writing method. This is a block diagram for. 1...Address bus from MPU, 1'□2...M
Data bus from PU, 3... Address changeover switch, 4... Display address generation section, 5... Synchronization signal generation section, 609. Pattern memory, 1:. 7... Color memory, 8... Memory control signal generation section, 9... Pattern data buffer, 10... Color data buffer, 11... Video signal synthesis section, 12... Video signal output terminal , 13...color register, 14...address decoder, 15...photographic memory select signal. 16...Code memory select signal, 17...Bank changeover switch, 18...Pattern memory select signal, 19...Color memory select signal 20...OR circuit. Patent attorney Akio Takahashi, representing C1 l.

Claims (1)

[Claims] 1) The first pattern information transmitted by the code transmission method is placed in the first area, and the second pattern information transmitted by the photographic transmission method is placed in the second area.
a pattern memory configured to store first color information belonging to the first pattern information in the first area, and a second color information belonging to the second pattern information to be stored in the first area;
a color memory, a pattern data buffer, a color data buffer, a color register, each storing color information in its second area, and a photographic transmission method to determine whether the received pattern information is based on a code transmission method or not; means for identifying whether the received first pattern information is based on the code transmission method, and when the identification result is based on the code transmission method, the received first pattern information is transmitted to the first pattern information in the pattern memory via the pattern data buffer. At the same time, as the first color information belonging to the first pattern information, the same data is written in the first area of the color memory according to the contents stored in advance in the color register, and the identification result is When using the photographic transmission method, the received second pattern information is written into the second area of the pattern memory via the pattern data buffer, and the second pattern information belonging to the second pattern information is written into the second area of the pattern memory via the pattern data buffer.
A memory writing method characterized in that the color information is written into a second area of the color memory via the color data buffer.