JPS61251896A - Character font conversion 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] (Industrial Application Field) This invention relates to a method for converting a font that is the source of characters output by a printer, etc., and particularly relates to a method for converting a character font to obtain a font with good print quality. be.

(Summary of the Invention) This invention creates first font data by photoelectrically converting character capitals, which are the basis of a font, using a television camera or the like, and outputs a font of a desired size from this first font data. This is to create the font data of No.2.

(Prior art) When printing characters with a print head of a printer, etc., the shape data of the corresponding character is stored in memory as a font,
The font as shape data is read from the stored memory and applied to the print head for printing. The printing fonts normally used for kanji etc. are 16X16 and 24X24.
It consists of 32 x 32 dots, which is sufficient for general documents, but it was not sufficient for printing.

(Problems to be Solved by the Invention) The letters used for printing are printed on a film in the case of an optical type, and 100x10 in the case of an electric type.
Those having a resolution of 0 dot or more are recorded on magnetic disks, etc. Electric 100x100 dot font.

When using 4000 characters, a large memory area of 5 MB is required, which is usually used for business purposes. However, in recent years, high-resolution output devices such as hissing type and heat-sensitive type have appeared and are used in general word processors.

This is becoming more and more common. Fonts used in such devices have a large number of dots and require a great deal of effort to input.

(Means for solving problems) The present invention was made in view of the above problems.

In order to print similar to printed matter, there is a means for photoelectrically converting the letters of a font created by printing or photography into first font data as digital values, and a second font by reducing the converted first font data. and means for converting it into data.

A multiple of the area of the second font created from the second font data is an odd number fraction of the area of the first font created from the first font data.

A multi-value code is assigned to each arbitrary area of the first font, and the first font data is transferred to the second font based on the assigned multi-value code.
This paper proposes a character font conversion method that converts characters into font data.

(Example) The present invention will now be described with reference to the accompanying drawings.

A character 1 as a printing font is imaged by a television camera 2, and a video signal is applied to an analog signal processing circuit 3. The synchronizing signal generation circuit 4 is.

It supplies the basic horizontal and vertical synchronizing signals to the television camera 2, and also applies a reference frequency to the PLL circuit 5, which generates sampling pulses used when digitizing the video signal from the television camera 2. This PLL
Circuit 5 is.

As known for frequency synthesizers etc.

It is possible to generate an arbitrary frequency whose phase matches a reference frequency. Therefore, in character fonts output to normal dot printers, the dot configuration of the - character is limited to 16X 16°24X24, so depending on the character that is the base character, if the height of the character is adjusted to other characters, the width of the character can be changed. In such a case, by making the sampling frequency variable by the sampling frequency specifying circuit 6, it becomes possible to fit the character font within the specified area. This can also be achieved by changing the sampling frequency for the same character.

The finished character width can be set arbitrarily. The analog signal processing circuit 3 applies the amplified signal to the analog-to-digital converter 7 so that the video signal is matched. The analog-to-digital converter 7 converts the video signal from the analog signal processing circuit 3 into a multi-value digital signal in synchronization with the sampling pulse from the PLL circuit 5. This multivalued digital signal is stored character by character in the screen memory 8 as first font data.

Next, the arithmetic processing circuit 9 reads out the multi-level digital 4-digit signal stored in the two-screen memory 8, examines the density distribution of this signal, sets the optimal threshold, and binarizes the multi-level data. Let's do it.

Furthermore, this arithmetic processing circuit 9 performs reduction conversion from the first font data to the second font data, and in the two examples, case A will be explained. FIG. 2 explains the weighting of the area of the first font, and for each dot in the 3 x 3 dot area of the first font, the center is 4. The four corners are weighted 1 and the other corners are weighted 2. This is determined according to the distance from the center of the area, and the white or black of the second font is determined based on the total value of white or black of this first font. If the total weight of black is 9 or more, the second font data is created as black, and if the total weight of black is 8 or less, the second font data is created as white. By changing the value of this weight, the character outline of the second font can be arbitrarily changed by changing the number of delimiters without changing the value of the 99 weight.

The second font data created in this manner is stored in the memory 10 as the final font.

This memory 10 records data on a magnetic disk or the like and is used for subsequent printing.

(Effects of the Invention) Since the present invention is configured as described above, it is possible to automatically create a high-quality printed font designer with any number of dots required from a character of any size. .

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; FIG. 1 is a block diagram, and FIG. 2 is an explanatory diagram of dot weighting. 1...... Alphabet, 2...TV camera, 5...PLL circuit, 7...
...Analog-digital converter. ８・・・・・・・・・Screen memory, 9・・・・・・・・・
・Arithmetic processing circuit.

Claims (1)

[Claims] It has means for photoelectrically converting the letters of a font created by printing or photography into first font data as digital values, and means for reducing the converted first font data and converting it into second font data. However, the multiple of the area of the second font created from the second font data is
It is an odd-numbered fraction of the first font created from font data, and a multi-value code is assigned to each arbitrary area of the first font, and the first font data is converted to the second font based on the assigned multi-value code. A character font conversion method characterized by conversion to font data.