JPS6060060B2 - display device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a display device, and more particularly to a display device that can define the character of one character, one row, one column, one part, or all of a display screen without reducing the number of displayed characters. .

Display devices, especially character display devices, display character symbols on the screen and can also display simple figures.
It is used as a terminal device in combination with a keyboard, and is also connected to a computer via a communication line.

A typical configuration of a character display device is to
As shown in the figure, the processing unit CPU or keyboard KY
Screen memory (refresh memory) 2 for inputting the character code from B, address or counter device 1 for indicating the address where the input code should be stored, screen memory 2
A character whose output produces a character pattern.
It consists of a generator 3 and a display section 4 that displays the generated character pattern on a screen.

In addition, there are graphic display devices equipped with line segment generators, circle generators, etc. that display arbitrary figures such as graphs, but it is also possible to display figures with character display devices. .

In addition, even if a character display is used, for example, when a character display device is used for banking, etc., the display screen will display fixed items such as date, account number, and name, as shown in Figure 2. The characteristics of the displayed characters may be different, such as displaying variable items other than the fixed items in bling and displaying characters in variable items with high brightness.

In this way, some conventional display devices divide the display screen into fields with different characteristics, and in that case, personality definition information (DFC Define Control) is used to define the characteristics of the display fields.
Word).

For example, when one character or several characters on the display screen are used as personality definition information characters to define the personality of the line after that character, or by providing personality definition bits for all displayed characters, There are cases where it is defined. However, in this method, personality defining information (DFC) is allocated to a portion of the display characters, so the number of displayable characters is reduced by the amount used as personality defining information.

Furthermore, since the personality is defined only in the row direction, it is difficult to define the personality in the column direction, and in order to define the personality in the column direction, it is necessary to allocate personality definition information to all the preceding columns. Furthermore, in the method of providing a personality definition bit for each display character, as the types of personality definition information increase, the capacity of the personality definition information storage section increases, leading to an increase in cost. An object of the present invention is to eliminate such conventional drawbacks, and to do so without reducing the number of characters that can be displayed on the screen or significantly increasing the storage capacity. The object of the present invention is to provide a display device that can define the character of the intersection of the two points.

In the present invention, there is provided a personality definition storage section that stores row personality definition information and column personality definition information respectively corresponding to rows and columns of a display screen, and personality definition information of rows or columns or both from the personality definition storage section. The above object is achieved by providing means for reading and controlling the screen display according to the read information, and defining the character of any screen field regarding the rows, columns, or intersections of rows and columns of the display screen. .

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 3 is a block diagram of a display device according to the present invention.

The display data and personality definition information sent from the counter at the center are input to the main control section 6 via the modem 5.

The main control unit 6 stores the display data at the address of the screen memory 2 specified by the display address control unit 7, edits the personality definition information, and stores the display data in the row personality definition storage unit 8 and column according to the instructions of the display address control unit 7. It is stored in the personality definition storage section 9. When a character pattern is generated from the character generator 3 using the code read from the screen memory 2 as an address, this pattern is sent to the display section 4 via the parallel/serial conversion section 11 and the display control section 10. Display control section 7
displays the input character pattern on the screen of the display section 4 according to the row and column definition information read out from the row character definition storage section 8 and the column character definition storage section 9. Note that the row and column character definition information is each 1-byte information, and the character of the screen display is defined by a combination of 8 bits.

FIG. 4 is an example of the display screen shown in FIG. 3, and a correspondence diagram between the row and column matrix and the personality definition storage section.

In Figure 4, the screen display area is 8 stems x 2 digits = 192
Therefore, the storage capacity of the personality definition storage unit 8 is 2.
The capacity of the column character definition storage section 9 is 8α bait.

In the case of FIG. 4, the personality is defined for bar graph display, so all dots can be defined for the bar portions.

First, the first byte in the column character definition storage section 9 defines a character display (scale numbers), and the second to sixth bytes define an all-dot display (bar portion).

In addition, in the case of all dot display, if the number of all marks, that is, the height of the bar is defined by the code of bits 0 to 4 in one byte of personality definition information, the height of the second byte is 3, and the height of the third byte is Height 4, the 4th byte is defined as 1, the 5th byte is defined as 2, and the 6th byte is defined as 20. Next, in the 24th byte of the line character definition storage section 8, line character is prioritized and character display definition is performed.

Therefore, the row and column data from the center calculator,
Display characters are sent, but the character defined by the row character is always displayed in the second digit, and the 0th to 2nd digits are displayed until t = 32 according to bits 0 to 4 (5 bits) of the column character definition information. Since the height of is defined, a bar graph of only this height will be displayed.

In this way, arbitrary personality definition information can be given to the rows and columns displayed on the screen, depending on the purpose of the display device.

FIG. 5 is a detailed block diagram from the row and column character definition storage section to the display section in FIG. 3.

The column counter 12 is a counter for 1 row and 24 columns,
The contents of this column counter 12 become the address of the row character definition storage section 8. That is, a count signal is sent from the column counter 12 to the screen memory 2, and the character code is read out.
The line is displayed on the screen by the display control unit 10, and during the display timing of the displayed line, a count signal is also sent to the line personality definition storage unit 8, and the personality definition byte of that line is read from the memory unit 8. Ru. Further, the row counter 13 is a counter for the 1st row and 8th row, and the contents of this row counter 13 become the write or read address of the column character definition storage section 9.
The character definition byte of the column is read from the column character definition storage section 9 during the display timing of the column.

The read row and column character definition bytes are displayed in the display control unit 10.
, the display control unit 10 displays the character pattern read from the character generator 3 and converted into parallel and serial data on the screen of the display unit 4 according to the contents of the row and column character definition bytes. FIG. 6 is an explanatory diagram showing another example of the display screen in FIG. 3.

The difference between the display in FIG. 6 and the display in FIG. 4 in terms of operation is the difference in meaning of the personality definition information in the rows and columns.

In other words, in Figure 4, arbitrary personalities are defined for corresponding rows and columns, whereas in Figure 6, the corresponding characters on the screen are defined by the combination of personality definition bytes in rows and columns. Define the intersection of rows and columns and the character after that intersection. As shown in FIG. 6b, each of the 8 bits constituting each byte of the row character definition storage section 8 and the column character definition storage section 9 is given a certain meaning. When bit 0 of the 8 bits is set to r1, it is a high brightness field that is displayed with high brightness, and when bit 1 is set to RlJ, it is a plink field where the display is plinked, bit 2.
When RL is set to Rl., bit 3 is a non-display field that does not display the contents of the display memory. If J is present, it is a protected field that cannot be entered from the keyboard, etc., bit 4.
If there is RlJ in , the transfer field to be transferred to the computer,
If bit 5 has RlJ, it is a printable field, if bit 6 has 01, it is a numeric field where only numbers can be entered from a keyboard, etc., and if bit 7 has Rl. The presence of J indicates each light field in which a light pen may be used.

Hereinafter, character definition bytes of rows and columns will be expressed in hexadecimal by setting BO=2) and B7=27. and,
By logical ANDing the row and column bits, valid characters are determined and personality is defined. For example, if you want to display high brightness from row m of column n onwards, the high brightness field (a)00
0) (0001) and the link field (0000
)(0010) for each upper and lower order, the nth byte (03
)16, the mth byte of the row character definition byte may be (03)16.

Now, taking the display screen of FIG. 6a as an example, the matrix character definition bytes are determined with reference to FIG. 6b.

First, in order to be able to select high brightness, plink, hidden field, and protected field for the first to fifth columns of the display screen, the corresponding The first byte of the column character definition byte is set to (0F)16 by setting bit r1 and displaying the upper and lower parts in a decremented manner.

Also, in order to be able to select transfer fields, printable fields, numeric fields, and light pen fields from the 6th line to the 10th line on the display screen,
6 of the column character definition byte as shown in the lower left part of Figure 6c.
The bite number is (FO) 16. Next, in order to make the 1st row, 1st column to 5th column of the display screen a high brightness, non-print field, and the 6th row to 10th column a normal brightness, print field, as shown in FIG. As shown in the upper right corner of c, the corresponding bit r1 is set, added, and expressed as a summation, thereby setting the first byte of the row character definition byte to (2, 1)16. In addition, in order to make the 1st to 5th columns of the 2nd row high brightness and plink fields, and the 6th column to 1st column to be normal brightness and numeric fields, the lower right side of Figure 6c should be used. As shown, the second byte of the row character definition byte is (4,3)16.

In the same way, matrix character definition bytes may be determined to obtain the desired display screen. As explained above,
According to the present invention, the display character code is not assigned as personality definition information, and some of the bits of the display character code are not assigned to personality definition information, so it is possible to define the personality of the screen without reducing the number of display characters. , and by making the display screen correspond to the matrix, 1
You can easily define personality for one row or one column.
Moreover, the capacity of the personality definition information storage section is only the number of bytes plus one row and one column, so it is small.

[Brief explanation of drawings]

l Fig. 1 is a block diagram of a conventional display device, Fig. 2 is an explanatory diagram of personality definition in character display, Fig. 3 is a block diagram of a display device showing an embodiment of the present invention, and Fig. 4 is a block diagram of a display device according to an embodiment of the present invention. An example of the display screen in FIG. 3 and a corresponding diagram of the matrix; FIG. 5 is a detailed block diagram of the readout path of the personality definition information storage unit in FIG. 3; FIG. 6 is another example of the display screen in FIG. 3; and is an explanatory diagram of personality definition information determination. 1...Address or counter device, 2...Display character memory, 3...Character generator, 4...
・Display unit, 5...Modem, 6...Main control unit, 7...
・Display address control unit, 8... Row character definition storage unit, 9
. . . Column character definition storage section, 10 . . Display control section, 11
. . . Parallel/serial converter, 12 . . Column counter, 13 . . Row counter, 18, 19 . . . 1 byte of row example personality definition storage unit.

Claims (1)

[Claims] 1. In a display device that stores information to be displayed in a screen memory and displays information read from the screen memory on the display screen via a character generator, row character definition information that corresponds to the rows and columns of the display screen and a personality definition storage unit storing column personality definition information, and means for reading personality definition information in rows or columns or both from the personality definition storage unit and controlling screen display according to the read information,
A display device characterized in that it defines the character of any screen field in terms of rows, columns or intersections of rows and columns on the display screen.