JPS63184128A - Display device - Google Patents

Abstract

PURPOSE:To exactly display a character or a graphic, by providing a control information buffer which stores a bit of a comparison effective range information, and varying a range by a control part. CONSTITUTION:A display device consists of the control part 1, a buffer memory 2, a graphic processing part 3, a display memory 4, an video signal processing part 5, a display part 6 such as a CRT, etc., and a coordinate input device 7. And a display information data transferred from a processor A is processed at the control part 1, and is stored in the buffer memory 2, and also, the character or the graphic is displayed on display part 6. At this time, a control information buffer 8 is provided to compare a coordinate value from the coordinate input device 7 with that of the character or the graphic. By using the buffer, the graphic processing part 3 compares the coordinate value with the value from the coordinate input device 7, and also, refers to the bit of comparison effective range information of the buffer 8, and when the said coordinate value is within a comparison effective range, the said character or graphic is selected, and also, the control part 1 varies the range.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a display device that displays character and graphic information from a processing device such as a computer.

[Conventional technology]

FIG. 2 is a block diagram showing the configuration of a conventional display device. In FIG. 2, a control unit 1 is a control means that performs predetermined control operations of the entire device and data transfer with a processing device A such as an external computer, and a buffer memory 2 is a control unit that performs a predetermined control operation of the entire device and data transfer with a processing device A such as an external computer. This is first storage means for storing information such as display commands and data. The graphic processing unit 3 processes the display information stored in the buffer memory 2 to generate character/graphic vectors (direction amounts) and points (positions).
The display memory 4 is a second storage means that stores the display dot information from the graphic processing section 3. Video signal processing section 5
is a video signal processing means for converting the display dot information stored in the display memory 4 into a video signal;
This is a display means that includes an RT and the like and displays the output of the video signal processing section 5. The coordinate input device 7 is a coordinate input means for inputting coordinate values for selecting display information to be displayed on the display unit 6.

Next, the operation of the conventional display device having the above configuration will be explained. The display information data transferred from the processing device A is stored in the buffer memory 2 through processing by the control unit 1. The display information data in the buffer memory 2 is decoded and executed by the graphic processing section 3 and written into the display memory 4 as display dot information. The display dot information data in the display memory 4 is read out periodically, sent to the video signal processing section 5, converted into a video signal, and further sent to the display section 6 to display characters and graphics.

On the other hand, the XY coordinate values inputted from the coordinate input device 7 are processed by the control section 1, written to a predetermined address in the buffer memory 2, and then written into the display memory 4 as a cursor mark by the graphic processing section 3. As a result, characters and figures according to the contents of the buffer memory 2 and cursor marks based on the coordinate input described above are displayed on the display section 6, respectively. Here, when selecting characters and figures to be displayed on the display section 6, for example, the figure processing section 3 compares the input XY coordinate values from the coordinate input device 7 with the XY coordinate values of the letters and figures. If the input XY coordinate value and the XY coordinate value of the character/figure are within a predetermined range (for example, within 4 mm), then the defeated character/figure is selected and displayed on the display section 6.

[Problem that the invention seeks to solve]

As explained above, in conventional display devices, the effective range of comparison between the input XY coordinate values from the coordinate input device 7 and the XY coordinate values of characters and figures from the processing device A is fixed. If the effective range is larger than the interval, it becomes difficult to select characters and figures that are close together. Conversely, if the effective range is smaller than the interval, it becomes difficult to select all characters and figures. There was a point.

This invention has been made to solve the above-mentioned problems, and provides a display device that can vary the effective range of selection of characters and figures, and can correctly select and display desired characters and figures. The purpose is to

[Means for solving problems]

The display device according to the present invention includes a third storage means (control information buffer) that stores comparison effective range information for comparing coordinate values from the coordinate input means (coordinate input device 7) and coordinate values of characters/figures. 8), the graphic processing means (graphic processing section 3) compares the coordinate values from the coordinate input means (coordinate input device 7) and the coordinate values of characters/figures, and also stores a third storage means (control information buffer). 8), and if the coordinate values of the character/figure are within the valid comparison range centered on the coordinate values from the coordinate input means (coordinate input device 7), the corresponding character/figure is A figure is selected, and the control means (control unit 1) has a configuration that makes the comparison effective range variable.

[Effect]

The display device according to the present invention performs coordinate comparison of character/figure selection using a changeable comparison effective range,
Desired characters and figures can be displayed.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. 1st
The figure is a block diagram showing this embodiment, and components in FIG. 1 that correspond to those shown in FIG. 2 are given the same reference numerals, and their explanations will be omitted. A feature of the present invention is that a control information buffer 8 is provided as a third storage means for storing comparison effective range information for comparing the coordinate values from the coordinate input device 7 and the coordinate values of characters/figures. , the graphic processing unit 3 compares the coordinate values from the coordinate input device 7 with the coordinate values of the characters and figures, and also refers to the comparison effective range information stored in the control information buffer 8 to determine the coordinate values of the characters and figures. When the character/figure is within a valid comparison range centered on the coordinate values from the coordinate input device 7, the corresponding character/figure is selected, and the control unit 1 makes the comparison valid range variable.

Next, the operation of this embodiment will be explained. The graphic processing section 3 processes the display information data in the buffer memory 2 as described in the prior art section, creates display dot information indicating vectors and points of characters and graphics, and writes it into the display memory 4. Here, when selecting a character or figure, for example, the figure processing unit 3 compares the input XY coordinate values input from the coordinate input device 7 with the XY coordinate values of the character or figure from the processing device A, as described above. At the same time, the comparison effective range information in the control information buffer 8 is referred to. If the XY coordinate values of the character/figure are within the valid comparison range centered on the input XY coordinate values, the corresponding character/figure is selected. The comparison range information in the control information buffer 8 can be changed by the processing of the control unit 1, and is set by instructions from the processing device A side.

As a result, characters and figures within the variable effective range of comparison are selected around the input xy coordinates from the coordinate input device 7,
It is displayed on the display section 6.

In the above embodiment, the comparison effective range information is stored and set in the control information buffer 8, but it may also be stored and set at a specific address in the buffer memory 2.

〔Effect of the invention〕

As described above, according to the present invention, the third storage means for storing comparison effective range information for comparing the coordinate values from the coordinate input means and the coordinate values of characters/figures is provided, and the figure processing means The coordinate values from the input means are compared with the coordinate values of the characters/figures, and the comparison effective range information stored in the third storage means is referenced to determine whether the coordinate values of the characters/figures are the coordinate values from the coordinate input means. By configuring the control means to make the comparison effective range variable, the corresponding character/figure is selected when it is within the comparison effective range centered on the character/figure. can be changed according to the detail of the content, and the effect is that characters and figures desired to be displayed can be correctly selected and displayed.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of a display device according to an embodiment of the present invention, and FIG. 2 is a block diagram showing the configuration of a conventional display device. DESCRIPTION OF SYMBOLS 1... Control part (control means), 2... Buffer memory (first storage means), 3... Graphic processing part (graphic processing means), 4... Display memory (second storage means) ), 5
...video signal processing unit (video signal processing means), 6.
. . . Display section (display means), 7 . . . Coordinate human input device (coordinate input means) 8 . . . Control information buffer (third storage means), A . . . Processing device. Agent Masuo Oiwa (and 2 others) Procedural amendment (voluntary)

Claims (1)

[Claims] A control means that performs predetermined control operations and data transfer with an external processing device, a first storage device that stores display information etc. from the processing device, and a display stored in the first storage device. A graphic processing means for processing information to create display dot information of characters and figures, a second storage means for storing display dot information from the graphic processing means, and a display stored in the second storage means. comprising a video signal processing means for converting dot information into a video signal, a display means for displaying the output of the video signal processing means, and a coordinate input means for inputting coordinate values for selecting display information to be displayed, When selecting characters and figures to be displayed, the coordinate values from the coordinate input means are compared with the coordinates of the characters and figures using the figure processing means, and the input coordinates and the coordinates of the letters and figures are compared. In a display device configured to select a character or figure that matches within a predetermined range and display it on the display means, compare the coordinate values from the coordinate input means with the coordinate values of the character or figure. A third storage means is provided for storing comparison effective range information for the purpose of comparing, and the graphic processing means compares the coordinate values from the coordinate input means with the coordinate values of the characters/figures, and also stores the information in the third storage means. Referring to the stored comparison effective range information, if the coordinate value of the character/figure is within the comparison effective range centered on the coordinate value from the coordinate input means, the corresponding character/figure is selected, and the control means A display device characterized in that the comparison effective range is made variable.