JPH0457091A - display device - Google Patents

Abstract

PURPOSE:To execute the display processing of many display patterns by a smaller memory capacity by extracting an offset value from a display address, and providing it on a changeable memory. CONSTITUTION:To a RAM for storing a display address, a reference display address, an offset address, and a display address are set as initial values. Subsequently, the element of a table in which a block to be outputted is the head address is checked, and unless it is a termination code, whether it is a line feed reset code or not is further checked. In this case, unless it is the line feed reset code, it is stored as an element of a table RAM. Next, in order to address an element of the next font code RAM, a column counter is incremented. Next, a font code counter is incremented. Thereafter, it is repeated until the termination is detected.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a method of addressing on a display device.

[Prior Art] Conventionally, various display devices have been provided that display character information and the like on a display in response to manual key operations.

The display method of such a display device includes a display position table that stores position data on the display for displaying characters, etc., and a display table that stores pattern data to be displayed. Desired position data is read, and desired display data is written to the display address based on this while reading from the display table.

[Problems to be Solved by the Invention] By the way, in this type of display device, the memory unit of the display table and display position table described above can be removed from the main device and replaced, and by attaching another memory unit, , it has been proposed that characters, etc. of different language systems can be displayed on one main body device.

However, in such a device, it is necessary to provide an individual display table and display position table for each replaceable memory unit, and a huge amount of memory capacity must be prepared as a whole depending on the number of memory units. The disadvantage is that it does not.

An object of the present invention is to provide a display device that can display and process many display patterns with a smaller memory capacity.

[Means for Solving the Problems] The present invention includes a pattern data memory that stores predetermined pattern data, and an address memory that stores a display address at which the pattern data is to be output, and that outputs the pattern data based on the display address. In a display device that outputs a display, the address memory is composed of a first part that stores a reference value and a second part that stores an offset value, and the address memory is configured to output the display address by calculating the reference value and the offset value. It has an arithmetic means for calculating, and for this arithmetic means, the second
It is characterized by the parts being interchangeable.

[Function] In the present invention, by extracting an offset value from a display address and providing it in a replaceable memory,
The memory capacity can be reduced compared to the case where the display address itself is provided in a replaceable memory, and a large amount of display data can be handled with a small memory capacity.

[Embodiment] FIG. 1 is an external perspective view showing an embodiment of an image forming apparatus according to the present invention.

This image forming apparatus includes a power switch 101 and a pilot lamp 102 that indicates whether the power is on or not.
, a management key 103 to prevent the device from being used by unauthorized persons, an operation unit 25, a document platen cover 105, a stick editor 106 for specifying the position on the document, and a copy A tray 107 for temporarily storing paper, a manual feed slot 108 for copy paper, and an IC card league 109 into which two IC cards can be inserted are provided.

FIG. 2 is a block diagram showing the control circuit of this device.

The image reading section 21 includes a CCD, a signal amplification circuit, an A/D conversion circuit, etc., and the signal after A/D conversion is input to the image processing section 22.

The image processing section 22 performs editing such as movement and scaling of the shading-corrected one image, and the signal subjected to these processes is input to the image recording section 23 .

The image recording section 23 records the video signal input from the image processing section 22 on paper such as recording paper to form a copy image.

Further, the CPU circuit section 24 includes a ROM, a RAM, a timer circuit, etc., and the above-mentioned image reading section 21 and image processing section 22.
, an image recording section 23, an operation section 25 described below, and the like, and controls the entire apparatus.

The operation unit 25 manages and controls various operation keys manually and controls the display on the touch panel display, etc. in this embodiment.

The IC card 26 stores display data for the touch panel display of the operation unit 25, and by exchanging this card, the displayed language can be changed. This card 26 stores offset addresses and block font code data on the display, which will be described later.

FIG. 3 is a plan view showing details of the operation panel of the operation section 25. FIG.

A touch panel display 301 with a function to set the mode by pressing the displayed key mark, a numeric keypad 302 to press when setting the number of copies and inputting the magnification, and a numeric keypad 302 for changing the number of copies or stopping the copying operation. the clear/stop key 303 that is pressed, the reset key 304 that is pressed to set the copy mode to standard, and the start + key that is pressed to start the copy operation.
- 305, a mode memory key 306 that is pressed when registering or recalling a copy mode, and a mode memory registration key 307 that is pressed when registering a copy mode, and applications for realizing multi-functionality and high operability in this device. A key group 308 is provided.

4 and 5 show the touch panel display 30
FIG. 1 is a schematic diagram illustrating a position representation on FIG.

This display 301 has a size of 30 fonts in width and 16 fonts in height, and addresses are assigned in a raskusgian pattern starting from "0" at the upper left corner 401 to "479" at the lower right corner 404. .

In this embodiment, the addresses on the display 301 are displayed at three reference positions 4 as shown in FIG.
The reference display addresses "O"7" and 14" corresponding to 01.402 and 403, and the "θ" to "ffh" attached within a window sized with 16x16 fonts, as shown in Figure 5. is expressed by the offset address of

That is, if the reference display address is A, the offset address is B, and the display address is C, then the following formula holds true: C=A+mod (B, 16) + int (B/16)X30 Equation (1). However, the reference display address A must be selected so that the target display address C is within the window shown in FIG.

FIG. 6(a) is a plan view showing a screen for selecting whether to copy the density gradation as it is or invert it in the blue monochromatic color mode.

In this figure, since a black key mark is currently used for "Positive", copying with the density gradation as is is selected. Here, enter the display address of the white or black "positive" key mark block,
The display address of a block with an inner or black "negative" key mark is 0 + mod (88h, 1B) + 1nt (88h/1B), representing the font in the upper left corner of each block.
X 30 and? +mod (87h, 1B) +1nt (88h/1B)
It is expressed as X30.

FIG. 7(a) is a schematic diagram showing part of the contents of the ROM provided in the IC card 26. As shown in FIG.

At the predetermined address D, the "positive" in FIG. 6(a) is
The offset address of the key mark is stored in the next address, and the offset address of "negative" is stored in the next address, each of 1 byte in size.

FIG. 8 is a schematic diagram showing blocks of black "negative" key marks.

This block is made up of a combination of 8x8 dot patterns of four sizes horizontally and two sizes vertically.

In FIG. 9, the block of black "negative" key marks shown in FIG. 8 is expressed by a font code, which will be described later, instead of a dot pattern in order to reduce the amount of data, and is stored in the ROM in the IC card 26. FIG.

The order in which they are stored is in a raskusguiyan manner. However, “g
oooh" and "f000h" are a line feed return code and a termination code, respectively.

Next, a control procedure for outputting a black "negative" key mark at the position of the white "negative" key mark in FIG. 6(a) will be explained based on FIGS. 10 and 11.

FIG. 10 is a flowchart showing a routine activated by a trigger such as pressing the touch panel display 301.

First, the column counter (X) and font code counter (Y) are cleared to O (Sl).

Next, in the RAM that stores display addresses, the reference display address A that the program logic has, the offset address B that the offset address table has, and the display address C based on the above formula (1).
is set as an initial value (S2).

Next, check the Y-th element Z [Y] of the table whose start address is the name “Z” of the block to be output, and if the termination code is not “fooOh” (S
3), it is further checked whether the line feed return code is "8000h" (S4).

If it is not a line feed return code, Z[Y] is stored as the C-th element E[C] of the table RAM with address E as the first address (S5).

A 480-word area starting from address E is an area for storing codes of 480 fonts to be output to the display 301, and is provided in the operation unit 25.

Next, address C and column counter X are incremented in order to load the next font code RAM element (S6, S7).

Also, if it is a line feed return code in S4, change address C to C
The column counter X is updated to +30-X (S8), and the column counter X is cleared to 0 (S9).

Next, the font code counter Y is incremented to address the next element of the font code data of the block (S t O).

Thereafter, the above S3 to SIO are repeated until termination is detected in S3.

Figure 11 shows the state of the font code RAM and the dot data table when a block of black "negative" key marks shown in Figure 8 is output at the position of the "negative" key marks shown in Figure 6 (a). FIG.

The key mark position is A=7 and B=87h, so
The initial value of address C is 254, and as shown in FIG.
The font code of the block is written as the 287th element.

Also, the dot data (8 bytes per 1 font) corresponding to the font code is read out, and the display 301
write to the specified display address.

The above describes the case where the IC card 206 is a Japanese language card. Next, the case where an English language card is inserted into the IC card reader 109 instead of the Japanese language card will be described.

Figure 6(b) is a schematic diagram showing a screen in English that allows you to select whether to copy the density gradation as is or invert it in the blue monochrome color mode.Here, the key marks of "PO3I" and "NEGA" The display address of each is 0+mod(85h, 1B)+1nt(
85h/18) X 30 and? +mod (88h, 1B) +1nt (88h/1B)
It is expressed as X30.

FIG. 7(b) shows the IC card 2 as in FIG. 7(a).
A part of the 6th ROM is shown at address D.
In figure (b), the offset address of the key mark "PO3I" and the offset address of the key mark "NEGA" are stored in the next address, each with a size of 1 byte. Also, in the case of English, , the method of expressing blocks using font codes is the same as in Japanese.Furthermore, the program shown in the flowchart in FIG. 10, the font code RAM, dot data table, etc. in FIG. Instead, CPU circuit section 2
4, and is common to all languages.

Therefore, the black “NEGA” position in Figure 6(b) is
All the control procedures, such as outputting the key mark "NEGA", are the same as in the Japanese case already described.

Next, a second embodiment of the present invention will be described.

FIG. 12 is a plan view showing details of the operation panel of the image forming apparatus according to the second embodiment.

This operation panel includes a 64 x 192 dot matrix liquid crystal display (LCD) 61, a copy start key 62, a recording paper cassette selection key 63, a numeric keypad section 64, a manual clear key for the numeric keypad, and a copy operation stop key. /Full key 65, key 66 for resetting the set display, keys 67 to 70 for moving the cursor on the liquid crystal display 61 in up, down, left, and right directions, and selection using the liquid crystal display 61. A key 71 for terminating the process, a projector key 72 for setting a copy mode using the film projector, an IC card insertion lower 3, and the like are provided.

FIGS. 13 and 14 are schematic diagrams illustrating position representation on the LCD 61. FIG.

The LCD 61 has a size of 24 fonts horizontally and 8 fonts vertically, and is addressed in a raspberry-like pattern starting from "O" at the upper left corner and ending at "191" at the lower right corner.

The addresses on the LCD 61 are an arbitrarily set reference display address and 0" to "fh" assigned within a 4 x 4 font size window as shown in FIG.
It is expressed by an offset address up to. That is, C=A+mod (B, 4) +int (B/4)X24...Equation (2) holds true.

FIG. 15(a) shows a message in Japanese that is displayed on the LCD 61 when the projector key 72 is pressed, and FIG. 15(b) shows a message in English.
ing.

Here, as shown in the message, we are asking you to select the type of film that will be the original to be copied.The currently selected film has a black number mark on the left side.
．． This is shown by outputting 2 or 3 blocks.

At this time, by pressing the right cursor key 70,
1→2→3→1 is selected, and by pressing the left cursor key 69, 1→3→2→l is selected.

FIG. 16 is a schematic diagram showing part of the contents of the ROM provided in the IC card. (a) and (b) in Figure 16 are
The cases of Japanese and English IC cards are shown, respectively.

Lower 4 bits and upper 4 bits of address F, address F
A number mark l and an offset address B of 2.3 are stored for the lower four bits of +1, respectively. However, each reference display address A is 96.104.1
It is 11. The rules for expressing the number mark blocks using font codes are the same as in the above embodiment. Also, C
The PU circuit section has a 192-word font code RA.
M is provided, and so is the dot data table.

The block output procedure according to the above configuration is shown in the flowchart of FIG. 10 in the above embodiment, but in S2, "address C based on the binary notation (2) is set as an initial value, In S8, C-C+24
-X,! Only the l-surukoto is different.

Further, the reason why the offset address differs depending on each language is mainly that the length of the word differs, which causes a difference in the output position in the horizontal direction. Therefore, a horizontally long window with a font of 8 in width and 2 in height as shown in FIG. 17 is more advantageous than the window shown in FIG. 14 used in the second embodiment. In this case, instead of Eq.

(5=A+mo d (B, 8) +i nt (B/8)X24 ...Formula (3) Control is performed based on the formula.

In each of the above embodiments, the IC card was a ROM, but by replacing it with a battery-backed RAM, one card can support many languages by writing data in the desired language from a predetermined terminal. can do.

[Effects of the Invention] As explained above, according to the present invention, by extracting an offset value from a display address and providing it in a replaceable memory, the result is improved compared to the case where the display address itself is provided in a replaceable memory. It is possible to reduce the memory capacity by using a small memory capacity, and it is possible to handle a large amount of display data that involves specification changes with a small memory capacity.

[Brief explanation of drawings]

FIG. 1 is an external perspective view showing an embodiment of an image forming apparatus according to the present invention. FIG. 2 is a block diagram showing a control circuit in the same embodiment. FIG. 3 is a plan view showing details of the operation panel of the operation section in the same embodiment. FIG. 4 is a schematic diagram illustrating position representation on the touch panel display in the same embodiment. FIG. 5 is a schematic diagram showing a font window in the same embodiment. FIGS. 6(a) and 6(b) are plan views showing an example of the selection screen in the same embodiment. FIGS. 7(a) and 7(b) are schematic diagrams showing the contents of the ROM of the IC card in the same embodiment. FIG. 8 is a schematic diagram showing an example of a dot pattern in the same embodiment. FIG. 9 is a schematic diagram showing a state in which the dot pattern shown in FIG. 8 is converted into a font code and stored in the ROM of the IC card. FIG. 10 is a flowchart showing the processing operation in the same embodiment. FIG. 11 is a schematic diagram showing the correspondence between the font code RAM and the dot data table in the same embodiment. FIG. 12 is a plan view showing details of the operation panel of the image forming apparatus according to the second embodiment of the present invention. FIG. 13 is a schematic diagram illustrating position representation on the LCD in the same embodiment. FIG. 14 is a schematic diagram showing a font window in the same embodiment. FIGS. 15(a) and 15(b) are schematic diagrams showing display examples of the LCD in the same embodiment. FIGS. 16(a) and 16(b) are schematic diagrams showing part of the contents of the ROM provided in the IC card in the same embodiment. FIG. 17 is a schematic diagram showing another example of the font window. 4...CPU circuit section. 5...Operation unit, 6...IC card, l...LCD, 06...touch panel display.

Claims (1)

[Claims] A display that includes a pattern data memory that stores predetermined pattern data and an address memory that stores a display address at which the pattern data should be output, and outputs the pattern data on a display based on the display address. In the device, the address memory is composed of a first part that stores a reference value and a second part that stores an offset value,
A display device comprising a calculation means for calculating the display address by calculating the reference value and an offset value, and wherein the second part is configured to be replaceable with respect to the calculation means.