JPS6239739B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a character display device, and more particularly to a display device for a monitor in a word processor.

Generally, when controlling text editing according to the document size in a word processor, the entire character information contained in A4 size or B4 size is projected on the display screen, and the text is edited according to the document size while looking at the display screen. Format control (editing control)
It is desirable to do this.

However, in order to display the entire text information group of A4 or B4 size on the display screen as described above, a display device with a very large screen is required. Conversely, if the CRT display screen that is commonly used is, for example, 80 characters x 25 lines, and the character size is about 10 characters/inch x 6 lines/inch, the A4 size is 210 mm x 297 mm (8.27 x 11.69
inch), and it was not possible to display an A4-sized sheet of paper on this one screen, so the only option was to reduce the size of the characters displayed.

Therefore, in the former case, the device is very expensive because it requires a display device with a large display screen, and in the latter case, the displayed characters are small, making it difficult to read the input characters on a monitor etc. during character input operations. This was difficult and caused a great deal of stress to the operator.

In view of the above-mentioned problems, the present invention is capable of displaying normal-sized characters that are easy to read on a monitor during character input operations, and when viewing the layout of the entire document size, the document size can be displayed on one screen. The entire text information for one page is displayed in a pattern according to the presence or absence of the characters and the size of the characters (full-width characters, half-width characters), and the layout of the entire document size can be seen by displaying the pattern. In other words, it can be used on a large screen. It is possible to display the following.

A display example of a generally created sentence is shown in FIG. 1, and each display character area indicated by 100 is a full-width character, and 1/2 of the full-width character is a half-width character 101. And Kanji (full-width characters)
Alphabets and numbers mixed in 101 half-width characters
These full-width characters and half-width characters are used to display text in an easy-to-read manner.

When viewing the entire layout of a document size in such a normal character display mode (display of a large screen), a pattern as shown in FIG. 2 is displayed. The size of this one pattern A, B, C... is the size of the half-width characters in Figure 1 above, and the size of one pattern is the same as the size of the half-width characters in normal character display as shown in Figure 1 above. This “〇” is a pattern of two characters in the row direction.
represents a half-width character, and "〓" is a pattern that represents a full-width character. Therefore, when Figure 1 is patterned, the first two half-width characters are full-width characters for "kai", so the pattern number in Figure 2 is selected and displayed, and the next characters are "Kai" and "Ha". The same applies to Since the next "1" and "0" are both half-width characters, pattern A in FIG. 2 is selected and displayed. In the example in Figure 1, it is “October”, but if it were “January”, the pattern in this case would be The targets are the half-width character "1" and the left half-width character area of "month". Therefore, the pattern shown in pattern RO in FIG. 2 is selected. The pattern in FIG. 2 indicates that two half-width characters are spaces, and the pattern bar also indicates that the half-width characters on the right or left side are spaces.

As described above, the character display device of the present invention does not require a large screen even when displaying the layout of the entire document size, and can display characters of a size that is easy to read as a monitor during input operations, making it convenient for the operator. This was done to reduce the stress and stress associated with this.

Next, the present invention will be specifically explained.

First, FIG. 3 is a block diagram showing the control structure of the display device of the present invention, and this diagram will be explained below.

Reference numeral 31 denotes a control section of the device, which controls various control signal lines for controlling the main memory 32 and refresh memory 35, which will be described later, as well as normal character display mode (normal screen display) and layout display for document size (large screen display). Switch to switching signal output line
Equipped with MS.

The main memory 32 stores the character data (character code signal) CHD input from the character input device, and receives the address data line AD ₁ for reading/writing, the character data line CD, and the read/write from the control unit 31. Light instruction signal line _R1W1 is connected _. Then, the memory 3
2 includes a data area 32B for normal character display and a large screen data area 32A for displaying a layout corresponding to the document size.

This data area 32A for large screen display reads data for two characters in units of half-width characters in the line direction of normal screen data, and selects the pattern shown in FIG. 2 depending on whether it is a character or a space, or whether it is a full-width character or a half-width character. It converts it into a code and stores it. Therefore, 2 in the row direction of normal screen data
For example, the character (half-width character unit) is "half-width, half-width"
If so, it is converted into a code for instructing the pattern shown in FIG. 2A, and if it is "half-width, full-width", it is converted into a code for instructing the pattern in FIG. 2B, and these are stored.

33 is a clock generation circuit which generates a signal T ₁ for each half-width character unit on the normal screen (a clock for one cycle of half-width characters on the normal screen) and a signal T ₂ for each dot unit.
(1 dot/1 period clock).

Reference numeral 34 denotes a character counter, to which a start address is set from the control section 31 via the address line AD ₂ when reading/writing the refresh memory 35, and a signal from the clock generation circuit 33 is set.
Count each half-width character on the normal screen based on T ₁ .

36 is an address generation circuit of the refresh memory 35, and when a read/write instruction is given from the control section 31 to the generation circuit 36 and the memory ₃₅ via the read/write instruction signal line _R2W2 , the character The address signal of the refresh memory 35 is outputted according to the count value of the counter 34.

The refresh memory 35 is the main memory 3
2 is written and output to latch circuits 37 and 38 as display data when displaying. This is performed by the read/write instruction and address generation circuit 36 on line R ₂ W ₂ .

The latch circuit A37 latches data for large screen display (output A of the refresh memory 35) based on the clock signal _T1 of the clock generation circuit 33. Further, the latch circuit B38 latches the data (output B of the refresh memory 35) during normal screen display based on the output of the full/half-width control circuit 39.

This full/half-width control circuit 39 is a latch circuit B38.
It outputs a capture control signal of controls the clock signal _T1 . That is, if it is a full-width character, a capture control signal is output to the latch circuit B38 at a timing of _2T1 , and if it is a half-width character, a capture control signal is output to the latch circuit B38 at a timing of _T1 .

40 is a raster counter A for large screen display, and 41 is a character generator A for large screen display. Therefore, when displaying on a large screen, the raster counter A40 counts the number of rasters/rows, and this output is sent to the character generator A41.
The character generator A41 uses the latch output of the latch circuit A37 as the upper address and outputs pattern data for large screen display based on these upper and lower addresses. In other words, the character generator A41
is equipped with the dog-dog pattern shown in FIG.

42 is a raster counter B during normal screen display, and 43 is a character generator B during normal screen display. Therefore, during normal screen display, the raster counter B42 counts the number of rasters/rows, and this output is sent to the character generator B.
43, and the character generator B43 uses the latch output of the latch circuit B38 as the upper address, and displays the normal screen based on these upper and lower addresses.

44 is a line counter A that counts the number of characters in the vertical direction of the screen (the number of displayed lines) when a large screen is displayed, and generates timing based on the count. 45
is a line counter B which counts the number of characters in the vertical direction of the screen (number of displayed lines) during normal screen display, and generates timing based on the count.

46 is a column counter A which counts the number of characters in the horizontal direction in each line of the screen during large screen display, and generates timing based on the count. 47 is a column counter B which counts the number of characters in the horizontal direction in each line of the screen during normal screen display, and generates timing based on the count.

48 is a switching circuit A and the row counter A4
The output from the line counter B45 and the output from the row counter B45 are switched based on a control instruction from the control section 31, and a timing signal is sent to the CRT drive signal generation circuit 54. 49 is a switching circuit B, which is a column counter A.
The output from the column counter B46 and the output from the column counter B47 are switched based on a control instruction from the control unit 31, and the CRT
A timing signal is sent to the drive signal generation circuit 54.

50 is P/S shift register A for large screen display
When displaying on a large screen, character generator A
The parallel output of 41 is received based on the clock signal _T1 from the clock generating circuit 33, and then converted into serial data based on the clock signal _T2 from the clock generating circuit 33 and output.

51 is a P/S shift register B for normal screen display, and the parallel output of the character generator B43 is transferred to the full/half-width control circuit 5 during normal screen display.
2 and clock signal based on the output of
It converts to serial data based on T ₂ and outputs it. This full/half-width control circuit 52 performs the same control operation as the full/half-width control circuit 39 described above.

53 is a switching circuit C, which is used for large screen display.
S shift register A50 and P/ for normal screen display
The S shift register B51 is switched based on a switching instruction from the control section 31, and its output is sent to the CRT drive signal generation circuit 54.

The CRT drive signal generation circuit 54 generates a vertical synchronization signal VS and a horizontal synchronization signal based on the outputs of the switching circuits A48, B49, and C53, the clock signal _T2 from the clock generation circuit 33, and the display enable signal from the control section 31. The HS and video signal VDO are output to the CRT display section 55.

Therefore, the control unit 3 is displayed on the screen of the CRT display unit 55.
In accordance with the switching instruction from 1, normal character display and layout display corresponding to the document size are performed.

FIG _. 4 shows various signals in each of the components shown in _FIG . Area A shows the time of large screen display, and area B shows the time of normal screen display.

To briefly explain the operation of the configuration shown in FIG. 3, first, in the case of normal screen display, the control unit 31
A normal screen display instruction is output to the switching signal output line MS.

Therefore, the data area 32 of the main memory 32
Data is transferred from B to refresh memory 35. The output data B of the refresh memory 35 is sent character by character to a latch circuit B38 which performs a latch operation based on the output of the full/half-width control circuit 39.

The character code taken into the latch circuit B38 is sent to the character generator B43, and the raster counter B42 outputs parallel pattern data to the P/S shift register B51 in synchronization with raster scanning. This register B51 converts the parallel pattern data into serial pattern data, and the data is supplied to the CRT drive circuit 54 via the switching circuit C53. At this time, the CRT drive circuit 54 has a row counter B4.
5 and a timing signal from the column counter B47, the CRT display section 55 displays normal characters as shown in FIG.

In FIG. 5, "half" indicates a half-width display character, and "full" indicates a full-width display character.

Next, when displaying on a large screen to view the layout of the document size, the control section 31 outputs a large screen display instruction to the switching signal output line MS.

Therefore, data area 3 of main memory 32
Data is transferred from 2A to refresh memory 35. The output data A of the refresh memory 35 is sequentially fetched into a latch circuit A37 which performs a latch operation in response to the clock signal _T1 .

The code signal taken into the latch circuit A37 is sent to the character generator A41, and the raster counter A40 outputs parallel pattern data to the P/S shift register A50 in synchronization with raster scanning. This register A50 converts the parallel pattern data into serial pattern data, and the data is supplied to the CRT drive circuit 54 via a switching circuit C53. At this time, the CRT drive circuit 54 has a row counter A.
44 and a column counter A46, a layout is displayed on the CRT display section 55 in a pattern as shown in FIG. This FIG. 6 shows an example of a display when the normal screen display in FIG. 5 is switched to a large screen display.

In addition, in the above-mentioned large screen display, by setting the unit of the pattern to two characters in the line direction in half-width characters, the clock for each character can be used in common, making control when switching modes easier. . In addition, the code signal for selecting the pattern of I to N shown in Fig. 2 only needs to be 4 bits, so a large screen display can be realized even though the capacity of the data area 32A is relatively small compared to the number of displayed characters. You will be able to do that.

As described above, in addition to normal character display, the display device of the present invention displays character information for one page of document size in a pattern according to the presence or absence of the character and the size of the character (full-width character, half-width character). You can view the layout of the entire document size using the pattern display.

[Brief explanation of the drawing]

Figure 1 is a diagram showing an example of displaying a general sentence, Figure 2
The figure shows each pattern during layout display (large screen display) according to the present invention, Figure 3 is a block diagram showing the configuration of the device of the present invention, and Figure 4 shows various signal waveforms in the configuration of Figure 3. FIG. 5 shows an example of normal character display, and FIG. 6 shows an example of display on a large screen. 31: Control unit, 32: Main memory, 35: Refresh memory, 37 and 38: Latch circuit,
41 and 43: character generator, 50
and 51: P/S shift register, 48, 49 and 53: switching circuit, 54: CRT drive signal generation circuit, 55: CRT display section.

Claims (1)

[Scope of Claims] 1. A storage unit that stores input character information, a pattern generator that converts the encoded character information from the storage unit into a dot pattern corresponding to the character information, and a pattern generator that converts the coded character information from the storage unit into a dot pattern. In a character display device that is equipped with a display section that displays character information and can display character information in characters of multiple sizes, in addition to the first circuit means that generates a pattern for normal character display, a second circuit means for generating a layout display in which the entire document is displayed using symbols according to the presence or absence of the text information and the type of character size of each text information, and a command for the layout display; control means for switching the display content of the display section from a pattern for normal character display to a layout display when an output is received; A character display device characterized by: