JPS6017484A - Display - 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> The present invention relates to a display device used in an information processing device or the like.

<Conventional configuration and its problems> In general, in information processing devices that can process figures and images in addition to character information such as kanji, characters or other figures may be generated in desired areas of figures or images, or different Operations such as inserting images are often performed on the screen of a display device. In this case, the operator needs to know the number of characters that can be generated in the desired area and the size of the image that can be inserted. In other words, it is necessary to know the distance information or area information of the desired area, but conventionally such information has been obtained by the following methods.

B Display a one character long cursor on the screen of the display device,
By moving this cursor horizontally and vertically within the desired area, the distance or area information described above is obtained from the amount of movement.

As shown in FIG. 1, a scale pattern 2 is displayed at the corner of a screen 1, and distance or area information of a desired area is obtained using this scale pattern as a reference.

C. As shown in FIG. 2, a grid-like pattern (ruled line pattern) 3 of one character is generated on the screen 1, and the above-mentioned distance or area information is obtained from this pattern.

However, method A has a problem in that it requires an operation to move the cursor, which places a heavy burden on the operator. With this method, as the screen becomes larger, the scale pattern becomes farther away from the desired area, which increases the amount of movement of the operator's line of sight and increases operator fatigue, and there is also a risk of erroneously recognizing distance or area information. It has the disadvantage of being large. In method C, the grid pattern is displayed in areas other than the designated area, which makes the displayed characters difficult to read.
There is a problem in that the grid pattern cannot be identified in the dotted portion of the displayed image.

<Object of the Invention> The present invention solves the above-mentioned conventional problems. It is possible to generate a lattice-like ruled line pattern only in an arbitrary area of the screen, and to easily create the pattern regardless of the displayed image. The purpose of the present invention is to provide a display device that can be identified.

<Structure of the Invention> The present invention provides a display device in which data read out from a storage means is synchronized with screen scanning of the display means, is converted into a signal of a corresponding pattern by a pattern conversion means, and is input to the display means for display. pattern generating means for generating and outputting a ruled line pattern signal in synchronization with screen scanning of the display means; and logical operation means for outputting a logical operation signal of the output signal of the pattern conversion means and the output signal of the pattern generation means. , signal selection means for selecting either the output signal of the logic operation means or the output signal of the pattern conversion means and inputting the selected signal to the display means; The purpose is to achieve the above-mentioned purpose by controlling the value.

<Explanation of Examples> Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 3 is a block diagram of a display device according to an embodiment of the present invention. In this figure, 11 is a CRT unit, which displays a pattern corresponding to a signal input from a multiplexer 12 while scanning the screen. 13 is a display memory, and 14 is its address counter. The value of this address counter is updated in synchronization with the screen scanning of the CRT unit 11, and the data stored in the display memory 13 is updated at the address specified by the value of the address counter 14. They are read out sequentially in synchronization with screen scanning. The data stored in the display memory 13 includes address information bit A for specifying a pattern to be displayed on the screen of the CRT unit 11, and ruled line control information bit A for controlling the display of a ruled line pattern (to be described later). B and the address information bits are input to the pattern memory 16, and the ruled line display control information bits are input to the pattern memory 16.
B is input to the synchronization circuit 16. pattern memory 16
serves as a pattern conversion means, and serially outputs a signal of a specific dot pattern according to the address specified by the output signal (scanning line number information) of the address counter 14. This dot pattern signal is input to multiplexer 12 and exclusive OR gate 17.

18 is a ruled line pattern memory that stores ruled line patterns; 19 is an address conversion circuit that creates an address signal for one side of the ruled line pattern memory from the value of the address counter 14; These ruled line pattern memory 1B, address conversion circuit 19, and address counter 14 are
It constitutes a pattern generating means for serially generating a ruled line pattern (dot pattern) signal in synchronization with the screen scanning of the T unit 11. The generated ruled line pattern signal is input to the exclusive OR gate 17, and the output signal of this gate is input to the multiplexer 12.

From the synchronization circuit 16, the ruled line display control information PIP)B is synchronized with the read operation of the display memory 13 and input to the multiplexer. The multiplexer 12 selects the output signal of the pattern memory 16 and inputs it to the CRT unit 11 when the ruled line display control information bit is on, and selects the output signal of the exclusive OR gate 17 when the ruled line display control information bit is 1''. A signal is selected and input to the CRT unit 11.

FIG. 4 is a diagram showing a unit block of a ruled line pattern generated by the pattern generating means, and FIG. 5 is a diagram showing a pattern stored in the ruled line pattern memory 18. As shown in this figure, three patterns of mX1 bits PA, PB.

PC is stored in the ruled line pattern memory 18.

In this case, the operation of the address translation circuit 19 is as follows. First, the scanning line number indicated by the address counter 14 is converted into a value up to O-m-1, that is, the total number when the scanning line number is divided by m. Next, this total number is converted into an address in the ruled line pattern memory 18. Specifically, when the total number is Q or m-1, an address signal specifying pattern PA is output, and when the total number is 1 to 3 or m -4 to m -2, an address signal specifying pattern PB is output. If the total number is any other value, an address signal specifying the nositane PC is output.

Next, the operation will be explained with reference to FIG. 3 again.

The display memory 1 is synchronized with the screen scanning of the CRT unit 11.
The stored data of No. 3 is sequentially read out, and the corresponding pattern signals are sequentially sent out from the turn memory 15. At the same time, the ruled line pattern is generated from the turn memory 18, with the pattern shown in FIG. 4 as a unit block. signal is 1
Viscerally read out.

When the ruled line display control information bit of the data read from the display memory 13 is aO#, the output signal of the turn memory 16 is sent to the CRT display 11 via the multiplexer 12 and displayed on the screen.

When the ruled line display control information bit is 1'', the output signal of the exclusive OR gate 17 is sent to CR via the multiplexer 12.
It is sent to the T unit 11 and displayed on the screen. That is,
An exclusive OR pattern of the pattern corresponding to the data stored in the display memory 13 and the ruled line no turn is displayed on the screen of the CRT unit 11. Therefore, if only the bit of the ruled line display control information of the data read out from the display memory 13 is set to 1'' during the scanning period of a desired area of one screen, the ruled line pattern will be displayed only in that area. It is possible to prevent the ruled line pattern from being displayed in other areas.

FIG. 6 is a diagram showing a display example. In this figure, during the scanning period of the area surrounded by the dotted line 20, the ruled line display control information bit is 1'', and the ruled line pattern is displayed as shown in the figure.Here, 21 corresponds to the data stored in the display memory 13. Inside this pattern 21, the ruled line pattern is displayed as a white pattern.

Therefore, the ruled line pattern can always be clearly identified regardless of the displayed image.

In addition, in this embodiment, when the signal of all pits "O# (all pits white)" is constantly generated from the ruled line pattern memory 8, the image is inverted in black and white only in the screen area set in the ruled line display control information bisotopa 1. can be displayed.

In addition, by storing an appropriate pattern in the ruled line pattern memory 18, a dedicated cursor (
Block cursor) can be displayed.

Although one embodiment has been described in detail above, the present invention is not limited to this embodiment.

For example, you can change the border pattern as needed.
Further, the configuration of each part of the display device can be changed as appropriate.

<Effects of the Invention> As described above, the present invention uses a pattern corresponding to the read data of the storage means, or a no-turn obtained by logically calculating the no-turn and the ruled line pattern, as part of the bits of the read-out data of the storage means. The screen is configured to selectively display the screen according to the value of , and the operator displays a ruled line pattern that is easily distinguishable from the displayed image in the required area of the screen by simply setting some bits of the data stored in the storage means. This allows the operator to quickly and reliably know the number of characters that can be generated in the desired area and the size of the image that can be inserted, improving the efficiency of operations such as character generation and image insertion, and making it easier for the operator to This has the effect of reducing fatigue.

[Brief explanation of drawings]

Figure 1 is a diagram showing an example of display on a conventional display device;
FIG. 3 is a diagram showing another display example in a conventional display device, FIG. 3 is a block diagram of a display device according to an embodiment of the present invention,
FIG. 4 is a diagram showing a unit block of a ruled line pattern, FIG. 6 is a diagram showing a pattern stored in a ruled line pattern memory,
FIG. 6 is a diagram showing a display example in the same embodiment. 11...CRT unit, 12...Multi-Flexer, 13...Display memory, 14...
...Address counter, 16...Pattern memory, 16°゛...Synchronization circuit, 17...
Exclusive OR gate, 18... ruled line pattern memory, 19... address conversion circuit. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 3 Figure 4 Tee Figure 5 Figure 6

Claims (1)

[Claims] a display means, a storage means for sequentially outputting stored data in synchronization with screen scanning of the display means, a pattern conversion means for converting output data of the storage means into a signal of a corresponding pattern and outputting the signal, and the display means a pattern generating means for generating and outputting a ruled line pattern signal in synchronization with screen scanning; performing a specific logical operation between the output signal of the pattern converting means and the output signal of the pattern generating means;
a logical operation means that outputs a signal as a result of the logical operation;
According to the value of the second bit of the output data of the storage means,
signal selection means for selecting either the output signal of the pattern conversion means or the output signal of the logic operation means and inputting the selected signal to the display means; the display means is inputted from the signal selection means (i4 A display device that displays a pattern on the screen.