JPS62231383A - Character enlarging device - Google Patents

Abstract

PURPOSE:To simplify a device constitution, by selecting a dot interpolation process on an interpolation table corresponding to the on/off pattern information, and transmitting a control signal to a dot interpolating means. CONSTITUTION:A local pattern detecting means 12 detects the on/off pattern information of an optional dot, and adjacent eight dots centering the dot on a character pattern storing means 11, and supplies them to an interpolation process selecting means 13. An interposition process deciding means 21 in the circuit 13 acquires an interpolation processing method corresponding to the on/off pattern information, by retrieving items corresponding to the on/off pattern information on an interpolation process table 22. And the means 21 supplies the control signal to instruct that the interpolation processing method should be performed, to an interpolating means 14. The means 14 executes the expansion and the interpolation process of a canter dot responding to the control signal, and outputs an expanded character pattern.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a character enlarging device for enlarging and outputting a character pattern composed of a dot matrix from a word processor, personal computer, or the like.

2. Description of the Related Art In recent years, character enlarging devices have been put into practical use that enlarge and output dot matrix characters from word processors, personal computers, etc. with high quality.

An example of the conventional character enlarging device mentioned above will be described below with reference to the drawings. FIG. 5 shows the configuration of a conventional character enlarging device. In FIG. 5, 51 is character pattern storage means, 52 is adjacent 4-dot information acquisition means,
53 is a four-dot pattern recognition means, 54 is a surrounding dot information acquisition means, and 55 is a dot interpolation means.

The operation of the character enlarging device configured as described above will be explained below.

First, the adjacent four-dot information acquisition means 52 acquires on/off pattern information of four dots adjacent to each other on the character pattern of the dot matrix structure stored in the character pattern storage means 51. The four-dot pattern recognition means 53 is
When the adjacent 4-dot information acquisition means 52 detects that the on/off pattern information transmitted indicates a specific on/off pattern, a control signal instructing that information on dots surrounding the adjacent 4 dots should be acquired. is transmitted to the surrounding dot information acquisition means 54. Surrounding dot information acquisition means 54 transmits information on dots surrounding the four adjacent dots to dot interpolation means 55 in response to the control signal. The dot 1 to interpolation means 55 respond to the on/off pattern information transmitted by the adjacent 4-dot information acquisition means 52 and the 1-sort information around the adjacent 4 dots transmitted from the surrounding dot information acquisition means 54, and Dot interpolation is performed within the area surrounded by four dots. (For example, published patent publication 60-83
853) Problems to be Solved by the Invention However, with the above configuration, the acquisition of dot information is carried out in two stages through conditional judgment, so there is a problem that the configuration of the character enlarging device becomes complicated. Ta.

In view of the above problems, the present invention provides a character enlarging device with a simple configuration.

Means for Solving the Problems In order to solve the above problems, the character enlarging device of the present invention has the following features:
The interpolation processing selection means includes an interpolation processing table in which interpolation processing for all 512 types of on/off pattern information that can be output by the local pattern detection means is written, and on the interpolation processing table, the interpolation processing table corresponds to the on/off pattern information. The apparatus is configured to select the dot interpolation process and transmit a control signal to the dot interpolation means.

Effects of the present invention With the above-described structure, the acquisition of dot on/off pattern information, which was conventionally done in two steps through condition judgment using the four-dot recognition means, can be completed in one step, and the structure is simple. This means that the device can be realized.

Embodiment Hereinafter, a character enlarging device according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a block diagram of a character enlarging device according to an embodiment of the present invention. 1st
In the figure, 11 is a character pattern storage means, 12 is a local pattern detection means, 13 is an interpolation process selection means, and 14 is a dot interpolation means. FIG. 2 is a block diagram showing the structure of the interpolation process selection means 13, in which 21 is an interpolation process determination means and 22 is an interpolation process table. FIG. 3 is an explanatory diagram showing examples of interpolation patterns for off-dots, and shows four types of interpolation patterns corresponding to the lower left corner of the corresponding tone pattern after enlarging the off-dots. (al is elongation l
The interpolation pattern of fb) is the interpolation pattern of slope 2, (C
1 is an interpolation pattern with a slope of 1/2, (di is an interpolation pattern indicating that no interpolation processing is performed. Four types of interpolation patterns also correspond to the other three corners of the corresponding dot pattern after enlarging the off-dots. Furthermore, an interpolation pattern for on-dots is constructed in the same manner. FIG. 4 is an explanatory diagram showing the construction of the interpolation processing table 22.

The operation of the character enlarging device configured as described above will be described below with reference to FIGS. 1 and 2.

First, the local pattern detection means 12 detects on/off pattern information of an arbitrary dot on the character pattern storage means 11 and eight dots adjacent to the dot as a center, and supplies the information to the interpolation processing selection means 13.

The interpolation processing selection means 13 includes an interpolation processing table 22 that stores instructions for interpolation processing methods corresponding to each of the 512 types of on/off pattern information that may appear. The method of instructing the interpolation process on the interpolation process table 22 is, for example, as shown in FIG. There is a method of independently describing the four corners as shown in FIG. The dot interpolation means 14 obtains a control signal by searching and instructs to carry out the interpolation processing method.The dot interpolation means 14, in response to the control signal, enlarges the center dot and performs the interpolation processing. Execute and output the enlarged character pattern.

Effects of the Invention As described above, according to this embodiment, an interpolation processing table is provided in which interpolation processing for all of the 512 types of on/off pattern information that can be output by the local pattern detection means is written, and the interpolation processing table is By selecting the dot interpolation process corresponding to the on/off pattern information and transmitting the control signal to the dot interpolation means, it is possible to construct a character enlarging device with a simpler structure than before. can.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a character enlarging device according to an embodiment of the present invention, FIG. 2 is a block diagram showing the configuration of an interpolation processing selection means, and FIG. FIG. 4 is an explanatory diagram showing an interpolation pattern of dots corresponding to the lower left corner after enlargement, FIG. 4 is an explanatory diagram showing an example of the structure of an interpolation processing table, and FIG. 5 is a block diagram showing the structure of a conventional character enlarging device. 11...Character pattern storage means, 12...
... Local pattern detection means, 13 ... Interpolation processing determining means, 14 ... Dot interpolation means, 21 ...
. . . Interpolation processing determining means, 22 . . . Interpolation processing table, 51 . . . Character pattern storage means, 5
2... Adjacent 4 dot information acquisition means, 53...
. . . 4 dot pattern recognition means, 54 . . . Surrounding dot information acquisition means, 55 . . . Dot interpolation means.

Claims (1)

[Claims] (1) A character pattern storage means for storing character pattern data constituted by a dot matrix, and a character pattern storage means connected to the character pattern storage means to turn on any dot on the character pattern storage means and 8 dots adjacent to the dot.
local pattern detection means for outputting off-pattern information;
connected to the local pattern detection means, should select dot interpolation processing corresponding to the on/off pattern information in response to the on/off pattern information supplied by the local pattern detection means, and perform the dot interpolation processing; and a dot interpolator connected to the interpolation processing selection means and performing enlargement processing and interpolation processing on the dots in response to the control signal supplied by the interpolation processing selection means. The interpolation processing selection means includes an interpolation processing table in which interpolation processing for all of the 512 types of on/off pattern information that can be output by the local pattern detection means is entered. . A character enlarging device characterized in that the dot interpolation process corresponding to the on/off pattern information is selected on the interpolation process table and the control signal is transmitted to the dot interpolation means.