JPS61286894A - Display unit - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

TECHNICAL FIELD The present invention relates to a display device, and more particularly to a display device in which characters, symbols, etc. are scrolled vertically or horizontally.

Background Art A vertical display device as shown in FIG. 5A or a horizontal display device as shown in FIG. 5B is used as a display device that displays and scrolls characters and symbols to convey information. 1 Normally, in the vertical type display device shown in Fig. 5A, the display content CA scrolls in the direction indicated by the arrow a. Scroll in the direction already shown (from the right to the left in Figure 5B).

FIG. 6 is a block diagram showing the configuration of a typical prior art display device 21. As shown in FIG. The 7 dresses of characters such as letters and symbols that should be displayed from the main control @22 are on line! 22. line! 22 is also line J! 2
2m, branching off to 722b. When the character is to be displayed horizontally, the data is input to the horizontal character generator 23m via the line /22g, and when the character is to be displayed vertically, the data is input to the vertical character generator 23b via the line 722b. Ru. The outputs of the character generators 23a*23b are respectively connected to lines 72.
3m! 23b to the switching circuit 24, and the switching circuit 24 selects and switches between vertical display and horizontal display using the changeover switch 27, and displays the vertical or horizontal data on the line! The data is output to the data memory 25 via 24.

The data memory 25 includes a character generator 23a*
or the data of the above characters sent from the character generator 23b are stored sequentially, and line J!
The signal is output to the display means 26 via the signal line 25, and the display means 26 is driven thereby to perform vertical or horizontal display.

In such prior art, it is necessary to provide two types of character generators, one for the front and the other for the side, depending on the display format of the character, and one of them is idle during operation, which is uneconomical.

Purpose An object of the present invention is to solve the above-mentioned technical problems, to create bound or horizontal display data from one type of data output from one type of character generator, and to create vertical or horizontal display data using a display means. It is an object of the present invention to provide a display device capable of displaying both horizontally and horizontally.

Embodiment FIGS. 1 to 3 show the operating principle of an embodiment of the present invention,
1 shows a vertical screen C, FIG. 2 shows a horizontal screen B, and FIG. 3 shows a screen area A. The principle of operation will be explained with reference to FIGS. 1 to 3, taking as an example a case where a zero character rPJ is displayed. Figure 3 Character rPJ
Addresses (for example, addresses 2000 to 2007 in this embodiment) are set in advance in the screen area A of , and each address is 8 pins (D7 to DO) (1
bytes). Table 1 corresponds to Figure 1,
Character parts are represented by "1-" and blank parts are represented by "0".

(Margin below) Table 1 In this way, one character rPJ is composed of a dot matrix (8×8=64 dots in this embodiment). When displaying the character rPJ encoded in this way on the horizontal screen B shown in FIG. tIS2, first write the data at address 2000 (8 bits from D7 to DO, the same applies hereinafter) to the right 11hl area of the horizontal screen B.

Then, at the next timing, the data at address 2000 is
2 and move the data of address 2001 to hl
At the next timing, data at address 2000 is moved to area h3, data at address 2001 is moved to area h2, and data at address 2002 is written to area l+.
By writing in the area 1 and continuing sequentially, the character rPJ appears from the right edge of the screen on the horizontal screen B, and moves in the direction indicated by the arrow a1 (from the right to the left in Figure 1).
It looks like it's flowing towards.

In addition, when displaying the character rPJ on the vertical screen C shown in Figure 1, first write the data on the line D7 (8 bits, the same applies hereafter) in the area v1 at the bottom of the vertical screen C, and then At the timing, move the data in the D7 row to the v2 area, write the D6 row data to the vl area, and at the next timing, the D7 data goes to the v3 area, and the D6 row data goes to the v2 area. and move the data of row D5 to vl
By writing in the area below and continuing in the following order,
On the vertical screen C, the letters rPJ appear from the bottom edge of the screen and appear to flow in the direction indicated by the arrow b1 (from the bottom to the top in FIG. 1).

FIG. 4 is a plot diagram showing the configuration of an embodiment of the present invention. A display device 1 according to the present embodiment outputs seven addresses of characters to be displayed, and a main control unit 2 including a processing circuit realized by an integrated circuit for controlling the whole, outputs data corresponding to the above addresses. a character generator 3 that outputs data from the character generator by switching it according to a "vertical" or "horizontal" command from the outside; a conversion circuit that receives horizontal data from the switching circuit 4 and converts it into vertical data; 5. The switching circuit 4
data from the conversion circuit 5 and the data from the conversion circuit 5.
A date circuit 6 that calculates the sum and outputs it, a data memory 7 that stores the output data of the date circuit 6 and outputs it in response to a signal from the main control section 2, and each store in the data memory 7 that displays the output data. The display means 8 is composed of a large number of display cells such as light emitting diode (LED) or incandescent lamp arranged individually corresponding to the cells.The display means 8 is constituted by fins 1 to 78 which connect the above-mentioned parts. has been done.

FIG. 5 is a diagram showing a circuit configuration of an embodiment of the present invention.

FIG. 5 shows the specific configuration of FIG. 4, and corresponding parts are given the same reference numerals. Referring to FIG. explain.

By the changeover switch 4c provided in the changeover circuit 4,
Either vertical display or horizontal display is selected and switched.

In this embodiment, when the changeover circuit switch 4c is in the open state, the display is horizontal, and when the switch 4c is in the closed state, the display is vertical. When the changeover switch 4c is in the open state, that is, in horizontal display, one output line 15 of the outputs of the data selector 4a is conductive, and the other output line 74 is cut off. line! All bits constituting 4 (in this example, 8 bits,
) to "0", and selector switch 4efff
In the f state, that is, in the case of vertical display, one output line of the data selector 4a, contrary to the above! 5 is cut off and Finn J! All bits constituting 5 (8 bits in this example)
1) is set to [0], and the other output fin! 4 is in a conductive state. In this manner, the display mode is switched by the changeover switch 4c.

First, the case of horizontal display will be explained. From the processing circuit 2& constituting the main control section 2, the address of the data of the character rPJ to be displayed is sequentially derived to the character generator 3 via a line 71 using a constant timing pulse (clock pulse). The character generator 3 sequentially sends the data for each address of the character "P" (8 bits each from D7 to DO in this embodiment) to each of the data selectors 4a in the conversion circuit 4 via the line 13 according to the above timing. Output to bit input terminal. on the other hand,
From the processing circuit 2a is the line J! 2a via “i!
” switching signal and the rmJ switching signal are applied to the switch 4b via the line 2b, and depending on the configuration of the changeover switch 4c, in this case, the ``!R'' signal is applied to the line J! 2c to the data memory 7.

At the first time T1, a command instructing the first 7 addresses 2000 of the character "P" from the processing circuit 2a is output to the character generator 3, and the character generator 3
is the number 2000 above)D? The 7'-data (0, OtO*0.o*0*O*0*) of -DO is input to each bit input terminal of the data selector 4a in the switching circuit 4 via the line 13. In the case of horizontal display, the data selector 4a selects the above data as a line! 5 to one input terminal of each of the OR data (6a to 6h) constituting the date circuit 6. The other input terminal of the date circuit 6 is connected to each output terminal of the shift registers 5a to 5h constituting the conversion circuit 5, and in the case of horizontal display, the output level of each of these shift registers 51 to 5h is Also O
It is. Therefore, each OR data of date circuit 6) 6a
-1 from 6h! , said 2000 address D? - The data (0, 0, 0, -, 0) of the DO is stored in the first memory 7a in the data memory 7 via the link 17. In this embodiment, the data memory 7 stores 8 bits (1 It is composed of N registers (N is the number of the last row or column of display cells constituting the display means 8) in which data (bytes) are stored.

At the next time T2, address 2001 is commanded from processing circuit 2a, and character generator 3 receives address 2001 D.
The data (0, 1, 1, . . . , 1) at the address DO is output, and these data are output to the data memory 7 via the date circuit 6 (, similarly to the data at the address 2001). At this time, the data at address 2000, which had not been stored in the first memory 7 & of the data memory 7, is # at timing T2.
12 and shifted to register 7b, #! The data at address 2001 is stored in the 1st shift renosta a.

Furthermore, at the next time T3, the data at address 2002 is output from the character generator, the data at address 2000 in the data memory 7 is shifted from the second memory 7b to the third memory 7C, and the data at address 2001 is shifted from the second memory 7b to the third memory 7C. 1
The data is shifted from the memory 7a to the second memory 7b, and the data at address 2002 is stored in the first memory 7-.

In this way, data 7a constitutes Tano Mori 7.
71, the data for each address related to the character rPJ is sequentially shifted and stored.Table 2 relates to the horizontal display of the character rPJ stored in the data memory 7 after the end of the period at time T8. Show data.

The first memory 7&, the second decay memory 7b, . The data entered into the memory is transferred from the switch 4b to the line! 26 to the data memory 7.
The timing pulses of the ``horizontal'' signal are led to the display means 8 via line 18 and drive the corresponding display cells in the display means 8, whereby eight bits (one byte) of data are transmitted to the display means 8. is displayed while scrolling sequentially from the right edge to the left edge on the screen.

Next, the address in the vertical display will be explained, the first time T1
The first address 200 of the character rPJ is sent from the processing circuit 2a.
The command for address 0 is output to the character generator 23,
Is character generator 3 located at address 2000 D above? -D
The data (0, 0, 0* . . . , 0) of o is inputted to each bit input terminal of the data selector 4a in the conversion circuit 4 via the line 73.

Data selector 4m displays the above data on the line! 4 to each bit input terminal of the first shift register 5a of the shift registers constituting the conversion circuit 5, and stored in the first shift register 5a.

At the next time T2, the data (0,0,0
, ..., 0) are shifted to the second register 5b, and the character generator 3 selects the address 2001 D? -Do data (0, 1, i.

1, . Furthermore, at the next time T3, 20
The data of address 00 D address DO is 3rd shift reno star 5C
, the data at address 2001 is stored in the second shift register 5b, and the data at address 2001 is stored in the first shift register 5a.
The data at address 02 D and DO is stored, and the following address data is sequentially stored and shifted to the next stage shift register)
is carried out, and after the end of the period T8, all the data related to the character rPJ are transferred to the shift register 5& which constitutes the conversion circuit 5.
-5h is stored.

Furthermore, at the next time T9, the first to eighth shift registers 5
The contents of step)7 in a to 5h are each shifted by 1 bit, and each of the most significant bits D of shift registers 5a to 51 are shifted by 1 bit.
7 data constitutes the date circuit 6 via the lines /6a~, /6h ORI'-)6a~6h
are individually derived to one input terminal of each. The other input terminals of the OR data controllers a to 6h are all "0".
” Therefore, the data of each high-order bit of the shift registers 5a to 5h is the OR data constituting the date circuit 6) 6
The output terminals a to 6h are output to the data memory 7 via lines /7m- and /7h, and the first memory 7a of the data memory 7 is output at the falling edge of the timing pulse that rises at time T9. Stored in

At the next time TIO, the above store contents of each shift register are shifted by 1 bit), and the data of D6, which is the most significant bit, is OR data)6a to 6h1 line 77a
- Derived to Data/Mory 7 via Noah h. At the same time, in the data memory 7, the data of D7 stored at the previous time T9 is shifted to the second memory 7b, and at the time T9.
At the falling edge of the signal, the data is individually stored in the second memory 7b and the first memory 7a, respectively. below,
Sequential Shift-Store The sequential operation of the store shift proceeds with timing and is stored sequentially in the data memory 7. Table 3 thus shows that after the end of the time period 716, all the data regarding the vertical display of the character rPJ shows a state in which the data is stored in the data memory 7.

(Left below) #5 3 Table Character rP stored in data memory 7 in this way
J's data is on the line! 8 to the display means 8, and thereby the data of 8 bits (1 byte) are sequentially scrolled from the bottom edge to the top edge on the screen of the display means 8, whereby the characters rPJ are sequentially output from the bottom edge to the top edge. Displayed while scrolling to the top.

In this embodiment, the character to be displayed is a single character "P", but it is of course possible to scroll display not only one character but also a continuous sentence (text or figure). *In this embodiment, the constituent elements of a character (for example, the letter "P") are made into a matrix of 8 x 8 = 64 dots, but if the number of bits in the matrix is increased, for example, 16
The configuration may be a dot matrix of 16= to 256 dots or more.

FIG. 61 and FIG. 6b are front views of the operation knob of the changeover switch. The scale plate 9 has "vertical" and "horizontal" scales separated by 90 degrees, and it is easy to determine whether the display mode is vertical or horizontal depending on the position of the arrow-marked operation knob 10a or the arrow-shaped operation knob 10b. can be confirmed.

Effects As described above, according to the present invention, one character generator is used to create display data for vertical and horizontal display of a character to be displayed from its output data, and the display means can be used to display vertically and horizontally. You can also do it.

[Brief explanation of the drawing]

FIG. 1 is an upper diagram showing a vertical screen C according to an embodiment of the present invention, FIG. 2 is a diagram showing a horizontal screen B, FIG. 3 is a diagram showing the opening operation principle showing the screen area A, and FIG. is a block diagram, FIG. 5 is a diagram showing the circuit configuration, FIGS. 6A and 6B are front views of the changeover switch, FIGS. 7A and V and 7B are external views of the display means, and FIG. 8 is a prior art. FIG. 1.21 -- Display device, 2.22 Main control section, 3
゜23a, 23b...Character generator, 4,
24... Switching circuit, 5... Conversion circuit, 6... Date circuit, 7°25... Data memory, 8, 26...
Display means, 10a. 10b...4 Knob Agent Patent Attorney Number of Strokes Keiichi Figure 1 Figure 2 Figure 3 jI6AE jI6BB 7A Cause 7B] Stone - Figure 8

Claims (1)

[Claims] A character generator having a matrix of store cells and storing characters by the store cells, and sequentially reading each character stored in the character generator row by row or column by column. A display device comprising: means for storing output data from the reading means; and display means for displaying the contents stored in the memory.