JP2001188505A - Display device and display control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device, capable of displaying display data by contracting a display width to 1/(n+1) without having to perform the expansion and contraction of a display at the boundary line of scanning blocks. SOLUTION: When display data are scrolled in a direction orthogonal to a scanning line, the display data are developed, by adding one row of a black row per (n+1) digits in the direction orthogonal to the scanning line and the data are displayed by reading out the developed display data, while skipping lines of the data by every (n) lines (n is equal to or larger than 1) and also skipping liens of the data by every (n+1) lines at the boundary line of the scanning blocks and at a next data readout time, the data are displayed after one line of the data is shifted, and by reading out the developed data by skipping lines of the data by each (n) lines and also skipping lines of the data by each (n+1) lines at the boundary line of the scanning blocks.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device and a display control method for displaying information by a dot matrix display unit of a dynamic drive system, for example, a display device and a display control method capable of compressing and displaying a display width during scroll display. It is about.

[0002]

2. Description of the Related Art When characters are displayed on a display device, generally, a font corresponding to each character is held in advance, and at the time of display, the font is read out, expanded in a memory, and displayed. In this case, the font to be retained is, for example, a normal font.Conventionally, if you want to display a half-width font, prepare and use a half-width font in addition to full-width fonts only for alphanumeric characters and katakana. I was

[0003] In some cases, a half-width font is generated from a full-width font by computation, and only a full-width font is retained and not a half-width font. In this case,
As shown in FIG. 7, the logical sum (OR) of every two lines of the full-width font is taken to make one line (for example, the logical sum (OR) of the lines a and b is calculated to be the line A of the half-width font). It was created and used by calculation, such as creating half-width fonts.

[0004]

However, when a half-width font is stored in addition to the full-width font, a half-width font storage area is required in addition to the full-width font storage area. I had to prepare.

Also, when a half-width font is generated from a full-width font, for example, as shown in FIG. 7, a logical sum (OR) of two lines is taken to form a half-width font as one line to create a half-width font. Is simply processed by calculation, so if you generate a half-width font from a font with a coarse dot, or a complicated font such as a kanji or a gaiji, the data converted to a half-width will actually differ from the font of the character or the gaiji. As a result, it is difficult to determine which character is used, and in some extreme cases, it cannot be determined at all. For example, even in the case of a simple English character font as shown in FIG. 8, it is difficult to determine the font.

[0006]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems, and reduces the display width in the direction orthogonal to the scan line by 1 / (n + 1) without reducing the number of display dots of display data.
The present invention has been made for the purpose of making display possible by reducing the display width to 1 / (n + 1) without expanding or contracting the display at the boundary of the scan block. As one means for achieving the above, for example, the following configuration is provided.

That is, a display device having a dot matrix display of a dynamic drive system having a plurality of scan blocks, wherein when the display data is scrolled in a direction orthogonal to the scan line, the data expanded for display is n. A display control means is provided for reading and displaying data by skipping lines (n is an integer of 1 or more), and reading and displaying data by shifting the data by one line and skipping n lines at the time of next data reading.

In a display device having a dynamic drive type dot matrix display having a plurality of scan blocks, when scrolling the display data in a direction orthogonal to the scan line, the display data is transferred to the scan line. One blank line per (n + 1) digits is added and expanded in the orthogonal direction, and the expanded data is skipped by n lines (n is an integer of 1 or more) and at the boundary of the scan block, plus one line Display control means for reading and displaying by skipping, shifting one line at a time when reading the next data and skipping every n lines, and reading and displaying by plus one line at the boundary of a scan block, and reading and displaying data, and having display control means for reading and displaying data. It is characterized by.

[0009] For example, the dynamic drive type dot matrix display uses a control signal capable of simultaneously selecting the same scan line of each scan block, and the energizing time of one scan line is always constant, and the scan order is fixed. It is characterized in that the order is always fixed.

For example, the dynamic drive type dot matrix display is characterized in that the same scan line of each scan block is cascaded, the energizing time of one scan line is always constant, and the scan order is always constant. Features.

[0011]

With the above arrangement, it is possible to provide a display device capable of reducing the display width to 1 / (n + 1) in the direction orthogonal to the scan line without reducing the number of display dots of display data.

Also, a display device capable of smoothly and clearly displaying scroll display even when the display width is reduced to 1 / (n + 1) without any expansion or contraction of the display at the boundary of the scan block and display is possible. it can.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a display device according to an embodiment of the present invention. In the following description, an example in which a three-digit LED dot matrix display having three display units is provided will be described. However, the present invention is not limited to the above example, and it goes without saying that a display device having a display device with an arbitrary digit may be used.

In FIG. 1, reference numeral 100 denotes a display device according to the embodiment. Reference numeral 200 denotes an information processing apparatus that supplies display information to the display device 100 of the present embodiment and performs display control.

In the display device 100, 110 is a control board, 160 is a display unit A, 170 is a display unit B, and 180 is a display unit C. Each of the display units A160 to C180 is a display unit with a driver board, and is, for example, 4 pixels × 4 pixels (4 dots × 4 pixels).
(4 dots) to display one digit. The scanning direction is from right to left in the drawings showing the following display control examples.

Each of the display units 160 to 180 constituting each scan block constitutes a dot matrix LED display section of a dynamic drive system, and uses a control signal capable of simultaneously selecting the same scan line to be turned on, or The same scan lines 160 to 180 are cascade-connected, and are controlled such that the energization time of one scan line is always constant and the order of scanning is always constant.

The control board 110 includes the following components. That is, in the control board 110, 1
Reference numeral 11 denotes an interface circuit (I / F circuit) that controls an interface with the information processing apparatus 200, and reference numeral 112 denotes a control unit that controls the entire control of the display device 100 according to the present embodiment.

Reference numeral 113 denotes a ROM for storing a control procedure of the control unit 112, 114 denotes a RAM for storing display data and the like, and 115 denotes a power supply unit.

The control board 110 has the above-described configuration, and supplies a scan selection signal (a scan line is selected by a combination of the signals) to the display unit 160 and other clock signals, data latch signals, display data,
Signals such as a blanking signal and a logic ground signal are supplied, and signal lines are cascaded between the units.

Further, display unit driving power from a power supply unit 115 is individually supplied to each display unit from the control board 110.

Further, by providing the control board 110 having the above configuration, it is possible to send data to the display unit 160 and display a display having each display effect by a control signal.

Hereinafter, the display control of the present embodiment having the above configuration will be described. In the present embodiment, the data in which a half-width font is generated using a full-width font as shown in FIG. 8 differs from a character or an external character font in practice, making it difficult to determine which character. In order to improve the situation where an extreme case cannot be discriminated at all, for example, when displaying at (1 / n) angle and scrolling in the direction orthogonal to the scan line, display is performed. The data is expanded by adding one blank line per (n + 1) digits in the direction orthogonal to the scan line, and the expanded data is skipped by n lines (n is an integer of 1 or more) and the scan block At the boundary, it is read and displayed by skipping one line, and when reading the next data, it is shifted by one line and skipped by n lines, and at the boundary of the scan block, To read the display in every other line, data is read and display the.

For example, when it is desired to scroll the display data in a direction orthogonal to the scan line by a half angle {(1/2) angle}, the display control shown in FIG. 2 is performed. FIG. 2 illustrates a display control example of data for scrolling in a half-width when scrolling from right to left in a state where “/////...” Is displayed in the embodiment. FIG.

First, data is developed as shown in FIG. 2 in consideration of boundaries between scan blocks. Then, data is read while sequentially shifting (every one scan) every several lines in the format shown in FIG. 2, and the data is displayed and output from the display unit.

For example, when "///// (/ is 6 digits)" is to be scrolled from right to left, the control section 112 controls the control board 100 in consideration of the boundary between scan blocks. The data is developed in the RAM 114 as shown in FIG. 2, and the data developed in the RAM 114 is read while being sequentially shifted (one scan at a time) in the format shown in FIG.
By outputting the data to 170 and 180, the display data can be compressed to half-width and scroll-displayed.

The display unit 16 is actually provided for each scan.
The data output to 0, 170 and 180 is as shown in FIG. FIG. 3 shows an example of display output from an actual display unit when the display control shown in FIG. 2 of the present embodiment is executed.
Actually, the display is output as shown in FIG. 3. However, when the display control of FIG. As a result, as shown in FIG. 4B, the display data appears to be half-width.

That is, although the actual display data is the data shown in FIG. 4A, a person who visually recognizes the display unit sees, for example, the time of the h scan due to the afterimage effect, and FIG. It appears that the display data is half-width as shown in FIG. FIG. 4 is a diagram for explaining that when the scroll control shown in FIG. 3 of the present embodiment is performed, it is recognized that the display width is reduced and displayed due to the afterimage effect.

As described above, when it is desired to scroll the display data in a half angle in a direction orthogonal to the scan line,
First, the data is taken into consideration in consideration of the boundaries between scan blocks, as shown in FIG.
Expand as shown in the figure and format {3} 2}
The data is read while sequentially shifting (one scan at a time) in the order of 1 △△ 0 △△ 3 △ 2 △ 1 △ 0... The data is output to a display device, so that it is not necessary to prepare a half-width font, and the display data is half-width. It becomes possible to perform a display control that looks like.

For example, when it is desired to display data in a 1/3 angle, the data is expanded as shown in FIG. 5 and the format {3} 2 {1} 0 {3} shown in FIG. △△ 2 △△
It is possible to read data while sequentially shifting (one scan at a time) at 1 △△ 0... And display and output the data from the display unit. Other 1/4, 1
.. Are the same display control.

As described above, when the display data is to be displayed in the 1 / n angle, when the display data is scrolled in the direction orthogonal to the scan line, (n + 1) digits are set in the direction orthogonal to the scan line. One blank line is added and expanded, and the data expanded for display is skipped by n lines (n is an integer of 1 or more) and at the boundary of the scan block, plus one line is skipped and read and displayed. At the time of data reading, display control may be performed such that data is read and displayed by shifting one line and n lines at a time, and skipping one line at the boundary of a scan block.

As described above, according to this embodiment, when it is desired to scroll the display data in a half-width direction in a direction orthogonal to the scan line in the dot matrix display of the dynamic drive system, first, at the boundary of the scan block, It is also necessary to prepare half-width fonts by developing the data as shown in Fig. 2 in consideration of the above, reading the data while sequentially shifting (one scan at a time) in the format shown in the figure, and outputting the data to the display. A scroll display with half-width font is realized smoothly and discriminably.

Further, when a half-width font is created by a conventional operation or the like, for example, if the size of a full-width font is 8 × 8 dots or 16 × 16 dots, the size of the half-width font is 4 × 8 or 8 × 16 dots. Become. In this,
As described above, as shown in FIG. 8, the half-width converted data actually differs from the character or external character font, making it difficult to determine which character. In an extreme case, it may not be possible to determine at all. However, in the present embodiment, such a disadvantage is solved by controlling the data development and read timings as described above.

That is, in the present embodiment, by realizing the display control shown in FIG. 2, during scroll display, full-width fonts, external characters, and all other display data can be displayed without reducing the number of display dots. With the number of dots, the image is displayed after being compressed to half-width or more. As a result, the number of display dots is reduced during compression conversion, the display becomes coarse, and it is possible to prevent the font from being difficult to determine.

By performing the display control shown in FIGS. 2 and 3, for example, in the present embodiment, it is recognized that the image is displayed as shown in FIG. Alternatively, since 16 × 16 dots are simply compressed to half the width with the number of dots in the scan line direction, even half-width characters can be displayed as 8 × 8 dots or 16 × 16 dots. It will not be.

Further, for example, it is possible to display an image on a matrix display of 8 × 16 dots at 16 × 16 dots, and it is possible to compress not only half-width but also more. All other display data such as external characters can be handled. Also in this case, there is no case where it is difficult to determine the font.

FIG. 6 is a diagram showing an actual compressed display state of a font in the embodiment. FIG.
If the data is read out while being sequentially shifted in the format shown in the figure and the data is output to the display unit, the display data can be compressed to 1/3 and scrolled and displayed. The same applies to further compression.
This function allows full-width fonts, external characters, and all other display data to be compressed and displayed in half-width or larger with the same number of dots without reducing the number of dots.

As described above, according to the present embodiment, in scroll display in the direction orthogonal to the scan direction of the dynamic drive type dot matrix display, data is developed in consideration of the boundaries of scan blocks, For example, in the case of displaying in a half-width mode, reading is performed while sequentially shifting (every one scan) in the format of FIG. 2 and outputting it. Each time), the display data can be compressed and displayed by reading and outputting the data (1/4 square,
1/5 angle, ...). As a result, even in a display system having a relatively small number of display digits, a large amount of information can be displayed, and even if compressed, the number of dots is the same as in full-width mode, so that it is not difficult to see.

[0038]

As described above, according to the present invention, the display width can be reduced to 1 / (n + 1) in the direction orthogonal to the scan line without reducing the number of display dots of the display data. A display device can be provided.

Further, there is provided a display device capable of reducing the display width to 1 / (n + 1) without expansion and contraction of the display at the boundary of the scan block to enable display, and capable of displaying scroll display smoothly and clearly. Can be provided.

Further, even in a display system having a relatively small number of display digits, it is possible to display a large amount of information.
Since the number of dots is the same as in full-width even when compressed, it is possible to provide a display device that does not become difficult to see.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a display device according to an embodiment of the present invention.

FIG. 2 illustrates an example of display control of data for scrolling in a half-width when scrolling from right to left while displaying '///// ...' in the embodiment. FIG.

FIG. 3 is a diagram for explaining an example of display output from an actual display unit when the display control shown in FIG. 2 of the embodiment is executed.

FIG. 4 is a diagram for explaining that when the scroll control shown in FIG. 3 of the present embodiment is performed, it is recognized that the display width is reduced and displayed due to an afterimage effect.

FIG. 5 is a diagram showing an actual data expansion method and a reading method for making a scroll display look smooth at a 1/3 angle of the present embodiment.

FIG. 6 is a diagram showing a compressed display state of an actual font in the present embodiment.

FIG. 7 is a diagram for explaining an example of half-width font conversion by a conventional calculation.

FIG. 8 is a diagram for explaining another example of half-width font conversion by a conventional calculation.

[Explanation of symbols]

 REFERENCE SIGNS LIST 100 Display device 110 Control board 111 Interface circuit (I / F circuit) 112 Control unit 113 ROM 114 RAM 115 Power supply unit 160 Display unit A 170 Display unit B 180 Display unit C 200 Information processing device

Claims (7)

[Claims] 1. A display device comprising a dot matrix display of a dynamic drive system having a plurality of scan blocks, wherein when display data is scrolled in a direction orthogonal to a scan line, data expanded for display is n. A display device comprising: display control means for reading and displaying data by skipping lines (n is an integer of 1 or more) one by one and shifting and skipping n lines at a time of next data reading to read and display data. 2. A display device comprising a dynamic drive type dot matrix display having a plurality of scan blocks, wherein when scrolling display data in a direction orthogonal to a scan line, the display data is moved relative to the scan line. Blank lines per (n + 1) columns
Lines are added and expanded, and the expanded data is skipped by n lines (n is an integer of 1 or more) and, at the boundary of the scan block, is read and displayed by skipping one line, and at the time of the next data reading, 1 line is skipped. Line shift n
A display device comprising display control means for reading and displaying data by skipping one line at a time and by one line at the boundary of a scan block. 3. The dynamic drive type dot matrix display uses a control signal in which the same scan line of each scan block can be simultaneously turned on and selected, and the energizing time of one scan line is always constant and the order of scanning is always constant. 3. The method according to claim 1, wherein the order is a fixed order.
The display device according to the above. 4. The dynamic drive type dot matrix display is characterized in that the same scan lines of each of the scan blocks are cascaded, the energizing time of one scan line is always constant, and the scan order is always in a fixed order. The display device according to claim 1 or 2, wherein 5. A display control method in a dynamic drive type dot matrix display having a plurality of scan blocks, wherein when data is scrolled in a direction orthogonal to a scan line, data expanded for display is n. A display control method characterized in that data is read and displayed by skipping lines (n is an integer of 1 or more), and at the time of next data reading, data is read and displayed by shifting one line and skipping n lines. 6. A display control method in a dynamic drive type dot matrix display having a plurality of scan blocks, wherein when scrolling display data in a direction orthogonal to a scan line, the display data is moved relative to the scan line. Blank lines per (n + 1) columns
A line is added and expanded, and the expanded data is skipped by n lines (n is an integer of 1 or more) and read and displayed at the boundary of the scan block by adding one line, and one line is read at the time of the next data reading. A display control method characterized in that data is read and displayed by shifting and skipping n lines at a boundary of a scan block plus one line at the boundary of a scan block, and reading and displaying data. 7. The display control of the dot matrix display of the dynamic drive system uses a control signal capable of simultaneously selecting the same scan line of each scan block, so that the energization time of one scan line is always constant and the scan control is performed. 6. The method according to claim 5, wherein the order is always a fixed order.
Or the display control method according to claim 6.