JPS6348071B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of using a dot information device such as a buffer memory in a graphic display device as an input device and outputting to a separately provided dot information device such as a dot printer.

Conventionally, this type of technology involves providing a dedicated buffer memory in a graphic display device, using a computer to read the memory contents, and outputting dots directly to another device. Since the dedicated buffer memory and output device are accessed directly, the process takes a long time.

Another method is to define a pattern unit so that each pattern is a collection of significant letters, numbers, and symbols, and then assign a code to this unit, read the dedicated buffer memory in units of a certain area of significance, convert the code, and output it. When doing so, this inverse conversion is performed, but this requires a wide variety of patterns, and has the disadvantage that the conversion table becomes large in proportion to the number of types, and the output device becomes expensive.

The present invention was made to eliminate these drawbacks, and includes a dot pattern/pattern code conversion function that can be used not only for letters, numbers, and symbols but also for general figures between the input buffer memory and the dot output device. By providing a circuit with
A method for quickly and easily transferring information from a buffer memory to an output device is provided.

The present invention will be described in detail below with reference to embodiments with reference to the drawings.

FIG. 1 is a configuration block diagram showing an embodiment of the present invention, where 1 is a graphics CRT, for example, and 2 is a CRT control device, which has a built-in dedicated buffer memory and can store screen information in units of dots as is well known. Reference numeral 3 denotes a reading circuit which reads the buffer memory dot by dot and transfers it to the storage device 4. The control circuit 5 is
It has a built-in standard dot pattern group with a specific dot configuration and a corresponding pattern code group, and is stored in the storage device 4.
Divide the dot information in the dot into elementary regions with a specific dot configuration, attach position information to these, and compare the dot information of the elementary regions with the standard dot pattern group to find the pattern code of the standard dot pattern that matches,
The data are combined and stored in the pattern code data storage device 6. In this case, instead of storing the position information of the elemental area, only the pattern code of the elemental area may be stored at an address in the storage device 6 associated with the positional information.

The pattern output circuit 7 has a built-in pattern code/standard dot pattern conversion circuit, refers to the codes in the pattern code data storage device 6 in address order, converts the codes into a standard dot pattern, and restores the dot configuration of the raw area. The dot output controller 8 then outputs the information to the dot output device 9 in correspondence with the address in the storage device 6. The control device 8 has a built-in buffer memory for output, and stores data while being located in this buffer memory, and then inputs it to the output device 9 each time, or stores all the contents of the buffer memory for input, and outputs them sequentially after completion. Output to device 9.

Next, the control circuit 5 that performs elementary region division, positioning, and pattern encoding will be explained in detail.

Figure 2 is a standard dot pattern/pattern code comparison diagram. For example, when a region with a total of 4 dots consisting of a row of 2 dots and a column of 2 dots is selected as an elementary region, all dot patterns in the elementary region are listed. , there are 16 pattern types as shown in the figure, and there are no other types. Therefore, all these patterns are called standard dot pattern groups, and are respectively P ₁ , P ₂ ,...,
Set it as P ₁₆ .

Now, the information displayed on Graphics CRT1,
For example, as shown in Figure 3, the number "3" occupies a row of 8 dots and a column of 6 dots,
The area surrounded by vertical and horizontal ruled lines represents one dot,
Blank areas represent "0" and hatched areas represent "1". Then, as mentioned above, we define the elementary region to have a 2-dot row and 2-dot column configuration, and if we divide all the dots in Fig. 3 into elementary regions, Q ₁ to Q ₁₂ are divided as shown in Fig. 4.
12 elementary regions are obtained. Using the standard dot pattern/pattern code comparison diagram in Figure 2, these 12
Correlating the dot patterns in the elementary area with pattern codes, Q ₁ →P ₅ , Q ₄ →P ₁ , Q ₇ →P ₅ , Q ₁₀ →P ₃ , Q ₂ →P ₇ , Q ₅ →P ₁₄ , Q ₈ →P ₁ , Q ₁₁ →P ₆ , Q ₃ →P ₄ , Q ₆ →P ₄ , Q ₉ →P ₈ , Q ₁₂ →P ₂ , and so on. If we specify that the suffix attached to Q, which indicates an elementary region, indicates position information, and the suffix attached to P, which indicates a standard pattern code, indicates a code, then to combine these and indicate the first elementary region, we use (1, 5), to indicate the second elementary region (2, 7)
becomes.

Therefore, according to the conventional dot information representation method, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1,
0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 1,
1, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0,
0, 1, 0, 0, 1, 1, 1, 1, 0, 0, 0,
In this example, the expressions 0, 0, 0, 0 are (1, 5), (2, 7), (3, 4), (4, 1),
(5, 14), (6, 4), (7, 5), (8, 1), (
9,
8), (10, 3), (11, 6), (12, 2).

Furthermore, if a method is adopted in which the position information is stored in the storage device 6 in accordance with the position information, the position information can be omitted, and only the pattern code can be stored as 5, 7, 4, 1, 14, 4, 5, 1, 8, 3, 6, etc.
You can store it as 2.

In this example, we considered an elementary region with a 2-dot row and 2-dot column configuration, but a horizontally long 1-dot row,
Even in a 4-dot row configuration, the total number of dots included is 4, and the number of types of standard pattern codes is also 16.

In addition, the total number of dots included in the elementary region is 2,
3, 5, 6... are possible. The number of types of standard pattern codes for each total number of dots is expressed as: Total number of dots Number of types of standard pattern codes 2 4 3 8 4 16 5 32 6 64 7 128. If the total number of dots is small, the number of code types is small, but on the other hand, the position information (number of elementary areas in the buffer memory) is large.If the total number of dots is large, the number of pattern outputs can be reduced, but the number of code types is Since the number of dots is large, the appropriate number of dots is about 4 to 6.

According to the present invention, the buffer memory that stores information in units of dots is divided into elementary areas of 4 to 6 dots in total, and position information is attached to the divided areas. a control circuit that replaces the pattern code with a pattern code of the corresponding pattern and stores it in a pattern code data storage device;
Since it includes an address in the pattern code storage device and an output circuit that converts the stored pattern code into a dot pattern and outputs it to the dot output device according to the position information, it requires less processing time than the conventional dot input/dot output conversion method. High-speed dot input with a new storage device/
Dot output conversion is possible.

[Brief explanation of the drawing]

FIG. 1 is a configuration block diagram showing an embodiment of the present invention, FIG. 2 is a standard dot pattern/pattern code comparison diagram, FIG. 3 is an exploded view of dots according to an embodiment of the present invention, and FIG. Elementary domain decomposition diagram, 1...Graphic CRT, 2...CRT control device, 3...Reading circuit, 4...Storage device, 5...
...Control circuit, 6...Pattern code data storage device, 7...Pattern output circuit, 8...Dot output control device, 9...Dot output device, _P1 , _P2 ,...
...pattern code, Q ₁ , Q ₂ , ... elementary area dot pattern.

Claims (1)

[Claims] 1. A device having input information in units of dots, a first storage device storing a conversion table for mutually converting all dot patterns that can be included in an elementary area of a fixed dot configuration into pattern codes, and a device having input information in units of dots; A second method for dividing the dot pattern into elementary regions and attaching elementary region position information so as not to overlap the dots, and storing a pattern code obtained by converting the elementary region dot pattern using the conversion table in association with the position information. a storage device, a multi-dot simultaneous output device that outputs the plurality of dots in units of elementary regions, and a second storage device that converts the pattern code stored in the second storage device using the conversion table to convert the dot pattern obtained by converting the dot pattern into the dot pattern according to the corresponding position information. A data input/output method characterized in that a means for simultaneously outputting multiple dots is provided at the upper location, and input information in units of dots is outputted to a multiple dot simultaneous output device.