JPS6049955B2 - Character pattern output method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a character pattern output method, and more particularly to a character pattern output method capable of outputting one character in different orientations.

Conventionally, a character pattern is generated from one character code, and based on the character pattern, it is displayed on a display using a dot display device or printed on paper.

However, even the same character may have different orientations, such as vertically and horizontally. For this reason, the output character pattern for one character is stored in memory in correspondence with the number of its orientations.
Different from the specified direction, ゛ J-, ni-L-, A-re,...
゛114→, ι-,, 11■(■１,!) Index the address conversion table using the character code (character pattern storage location address), and use the address obtained as the index result to convert the character. The pattern memory was being accessed. This address conversion table shows which addresses have patterns with different orientations for each character code. Therefore, in the conventional method, patterns with different orientations are located at which addresses. In this case, the address conversion table must be accessed once and for all, which places a burden on the software and slows down the processing speed.The object of the present invention is to solve the above-mentioned drawbacks. The purpose of this is to provide a character code register that stores character codes and a direction instruction register that specifies the direction of output characters, and to store the memory accessed using the upper and lower digit parts of the character code register in different orientations. The same character is constructed by storing a pattern in an address position that can be specified in the same lower digit part, and the upper digit and the lower digit mentioned above are obtained by merging a part of the upper digit part of the character code register and the contents of the direction specification register. This is achieved by accessing the above memory and outputting the character pattern using .

The present invention will be explained in detail below using the drawings.

The drawing shows an embodiment of the present invention, and in the drawing, 1 is a character code register in which a character code is stored, 2 is a direction specification register that specifies the direction of a character, RO indicates vertical, RlJ indicates horizontal, and 3 is a merging circuit that exclusive ORs and merges the most significant bit that is part of the upper digits of character code register 1 and the contents of the direction specification register, 4 is an upper digit address register, 5 is a decoder, and 6 is only the direction. The memo I87, in which character patterns of the same character with different numbers are stored at the same lower digit address and at the higher digit address in a merging relationship, is an output pattern register in which the output from the memory 6 is stored. Next, the operation will be explained. Character code ROOF'
5J (Takushin display) is the character code for the letter A,
This is the address where the vertical character pattern is stored. The horizontal character pattern of the character A is stored at address R8OF'5. ROO is the upper digit of the character code, and RF5 is the lower digit of the character code. For example, when outputting character A (7) vertical character pattern, ROJ indicating vertical character is set in direction specification register 2, and A
The code for ROOF'5J is character code register 1.
is set to . The merge circuit 3 is the upper digit ROOJ (
The most significant bit ROj of (in hexadecimal notation) and the content ROJ of the direction specifying register 2 are exclusive-ORed and set in the upper digit address register 4 together with the bits other than the most significant bit of the upper digit in the register 1. Then, the decoder 5 outputs a pattern ROll...10J indicating RA from the memory 6 to the pattern register 7 based on the lower digit part and the upper digit address register 4 of the register 1.
Output to. Then, if a horizontal character pattern of character A is required, RlJ indicating the horizontal character is set in the direction specifying register 2.
be hit by.

Code ROOF5J for A is character code register 1
The setting is the same as above. However, since the merge circuit outputs 1, RlOOOOOOJ, ie, R8OJ, is set in the upper digit address register. Therefore, for memory 6, the upper digit R8O,
The lower digit RF5J is accessed, and a pattern indicating R4J, for example "ROlO...01j, is set in the output pattern register 7. Therefore, according to the present invention, character patterns with different orientations are required for the same character. Sometimes, the data is simply passed through a merge circuit without using a conversion table, and character pattern data can be obtained in an extremely short time, saving the trouble of creating a conversion table.

Furthermore, exclusive OR is performed in the merging circuit, and if RlJ is provided in the most significant bit of the upper digit of the character code, the character pattern in the direction specified by the direction designation register 2 will be output from the memory 6. It is also versatile.

[Brief explanation of the drawing]

The drawings are examples of the invention. In the figure, 1 is a character code register, 2 is a direction specification register, 3 is a merge circuit, 5 is a decoder, 6 is a memory,
7 is an output pattern register.

Claims (1)

[Claims] 1. In a character pattern output method that creates and outputs an output character pattern from a character code, a character code register that stores the character code and a direction specification register that specifies the direction of the output character are provided, and the upper digit part of the character code register A part of the upper digit part of the character code register mentioned above and a part of the upper digit part of the character code register are configured by storing the same characters in different orientations in patterns at address positions that can be specified by the same lower digit part. A character pattern output method characterized in that the memory is accessed using the upper digits merged with the contents of a direction specifying register and the lower digits to output a character pattern.