JPH0449119B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a character image processing device that collectively processes text and image data, and more particularly to a text image processing device that displays text and images on a display screen.

Prior Art Conventionally, in display devices that mainly display characters,
On the display screen, the display position is determined so that, for example, 40 characters are displayed horizontally in 16 lines vertically.
The position of the character to be displayed is determined by moving the cursor.

On the other hand, in display devices that mainly display images,
Divide the display screen into, for example, 400 pieces vertically and 800 pieces horizontally,
Each section is displayed in correspondence with a pixel of the image. Further, the portion to be displayed or processed is specified pixel by pixel using a joystick coupler or the like. With this method, it is difficult to control the display compared to the above-mentioned display device that mainly displays characters, and the control circuit is also complicated.
It becomes expensive. Furthermore, when the orepeater specifies a specific position on an image, it is not easy to specify the position accurately because the position on the display screen is very segmented as described above.

Purpose In view of the above-mentioned points, an object of the present invention is to provide a character image processing device that can easily and inexpensively control the processing of character image information using a conventional character-based display method. be.

Another object of the present invention is to provide a character image processing device that allows an operator to easily specify an image position.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 shows an embodiment of a character image processing device according to the present invention. In the figure, the CPU is a microprocessor that performs calculations, logical judgments, etc., and controls buses AB, CB, and DB, which will be described later.
AB is an address bus, which transfers signals indicating the control target. CB is the control bus,
Apply control signals to various control targets. DB is a data bus and transfers various data. ROM is a control memory that stores various control procedures and the like. RAM is random access memory, and is used for temporary storage of various data, or as work memory for microprocessor CPU calculations and logical decisions. KB is a keyboard for text input, and the key information pressed from this keyboard is read by the microprocessor CPU.

Figure 2 shows the keyboard KB in more detail.
Here, keyboard KB is a group of keys for character input.
It has a group of keys for CH and function input. The character input key group CH consists of, for example, a JIS keyboard, and can input alphanumeric characters, kana, and the like. The function input key group consists of the following various keys. That is, they are a cursor movement key group CK, an image reading designation key RDK, and a document image combination key MGK.

Referring again to FIG. 1, CR is a cursor register, which writes the position of a cursor to be displayed on the display surface of a display device, which will be described later. This cursor register CR consists of 2W (W=word), the first W stores data representing the number of lines, and the second W stores data representing the number of digits.
The respective values are expressed as C(1,1) and C(1,2). BUF is a buffer and stores data input from the keyboard KB.
That is, it has a capacity of 8 x 5W and can store data of 5 rows and 8 digits in the form of a character code. The contents of this buffer BUF are expressed as B(L,C). Here, L is an integer from 1 to 5 and represents a row, and C is an integer from 1 to 8 and represents a column (or digit). CG is a character generator, which stores all patterns corresponding to character codes used in this embodiment.

In this embodiment, the number of dots constituting one character is 16×16 dots (see FIG. 8). CRTC is
CRT controller and cursor register CR
A cursor is displayed on the display surface of the display device according to cursor data stored in the display device. Also,
The CRT controller CRTC converts the character code data stored in the buffer BUF into pattern data by referring to the character generator CG, and displays the character or symbol pattern on the display device CRT. Here, the display device
On the CRT, data is displayed in 5 rows and 8 digits corresponding to the data in the buffer BUF.

RD is an image reading section, which reads images under the control of an image reading section controller RDC, which will be described later. This image reading unit RD is composed of a lens, a lamp, an image sensor, etc., but since this is a well-known technology for facsimile machines and the like, the details thereof will be omitted. RDC is the image reading unit controller,
The control procedure stored in the read-on memory ROM is executed to transfer the image data read by the image reading unit RD to the image buffer area IBUF of the random access memory RAM.

Figures 3A and 3B show details of the image buffer IBUF. As shown in the diagram, the buffer IBUF is 5×8×
16 = 640W (word) and its contents as IBUF
(l, Y, m) (l=1~5, Y=1~16, m=1
~8). Here, l represents the line and Y represents the number of the line read, with 16 lines corresponding to one line of characters, ie, l. m corresponds to the number of characters in the digit direction. That is,
The read image is 1 horizontally from the top left of the figure.
For each line (column of 1 dot), the first line is
From IBUF (1, 1, 1) to IBUF (1, 1, 8), the second line starts from IBUF (1, 2, 1)
IBUF (1, 2, 8) and so on, and the 17th line goes from IBUF (2, 1, 1) to IBUF (2, 1,
8).

FIG. 3B shows the structure of one word of buffer IBUF. As shown in the figure, one word (1W) is composed of 16 bits, and "black" in a binary image is represented by "1", and "white" is represented by "0".

In the memory RAM shown in FIG. 1 again, LX is a register that stores the number of dots in the horizontal direction of the image, and LY is a register that stores the number of dots in the vertical direction of the image. For example, if the number of dots in each image is LX=40
and if LY=50, this image data is
IBUF (1, 1, 1) ~ IBUF (1, 1, 3),
IBUF (1, 2, 1) ~ IBUF (1, 2, 3),...
IBUF (1, 16, 1) ~ IBUF (1, 16, 3),
IBUF(2,1,1) ~ IBUF(2,1,3),...
Stored in IBUF (3, 2, 1) to IBUF (3, 2, 3). “0” is stored in the remaining area of the buffer IBUF.

The operation of this embodiment configured as described above will be explained. The following explanation shows the operation of combining an image read in advance by the image reading device RD and stored in the buffer IBUF onto a text after characters are input as shown in FIG. 4A. This operation is executed by the operator moving the cursor CM to the leftmost position where the images are to be combined and pressing the image combining key MGK, as shown in FIG. 4B. For example, a screen as shown in FIG. 4B is obtained.

This operating procedure will be explained in detail below.

First, when characters are input as shown in FIG. 4A, the buffer BUF contains internal codes a, 1, and 2, respectively corresponding to characters A, B, and C on the display screen, as shown in FIG. 5A. b and c are stored. The internal codes a, b, and c and the address of the character generator CG are in a 1:1 correspondence, and the CRT controller CRTC calculates the address of the character generator CG from the internal code of the buffer BUF. Then, the pattern stored at the address of that character generator CG is displayed on the CRT. Now, let the address of the character generator CG corresponding to internal codes a, b and c be a′,
Let b′ and c′. Next, when the image merging key MGK is pressed after the cursor CM has been moved to the position where the images are to be combined (see FIG. 4B), various processes are executed as shown in FIG. 6.

Each process will be explained.

(1) Required area calculation process This process calculates how many characters are required on the display screen based on the size of the read image. The number of characters in the horizontal direction (NX) and the number of characters in the vertical direction (NY) are calculated using the following formula.

NX=(LX-1)/16+1 NY=(LY-1)/16+1 Note that the division result is rounded down to the decimal point.

The required number of area characters is (NX)×(NY) is required.

(2) Code assignment process This is a process that assigns a code to the number of characters calculated in process (1). As the code for the image, α,
α+1, α+2, . . . are prepared, and codes are assigned in ascending order of least used. Now, if we assume that coding starts from α,
The codes used are α, α+1, α+2,
..., α+{(NX)×(NY)−1}.

(3) Data transfer processing This is a process of transferring data from the image buffer IBUF to an address of the character generator CG that corresponds one-to-one with the code assigned in process (2). The address of the character generator CG corresponding to the code assigned in process (2) is
(α′, 1) to (α′, 16), (α′+1, respectively)
1) ~(α'+1,16),..., and the contents are CG(α',1)~CG(α'16), CG, respectively.
(α′+1,1) to CG(α′+1,16), . . .

FIG. 7 shows the detailed flow of this process (3). In the figure, in processes 3.1 to 3.4, initial values are stored in general registers X, Y, l, and m. process
In 3.5, data is transferred from a predetermined position of the image buffer IBUF to a predetermined position of the character generator CG. In process 3.6, compare the value of general-purpose register Y with "16", and if the value of register Y is small, proceed to process 3.7; otherwise, proceed to process 3.7.
Proceed to 3.8. Similarly, in processes 39 and 3.11, the values of registers m and l are set to NX
and compared to NY. In processes 3.7, 3.8, 3.10 and 3.12, registers Y, X, m, n
Increment the value of .

FIG. 8 shows the contents of the character generator CG transferred by the data transfer process 3 described above. In the figure, the fourth
As shown in FIG. B, this is the state when image data of a circle that occupies an area for four characters is transferred.

(4) Buffer writing process The code assigned in code assignment process (2),
This is the process of writing to buffer BUF.

FIG. 9 shows the detailed flow of process (4). Here, in processes 4.1 to 4.5, general-purpose registers Z, L,
Store initial values in C, m, and n. In process 4.6,
The value of the code stored in general-purpose register Z is stored in the position indicated by buffer B (L, C). In process 4.8, the value of general-purpose register n and the value of horizontal character count NX are compared, and if the value of n is small, proceed to process 4.9; otherwise, proceed to process 4.9.
Proceed to 4.11. In process 4.11, as in process 4.8, the value of the general-purpose register m and the value of the vertical character NY are compared, and if the value of m is small, the process proceeds to process 4.12, and if not, the buffer write process is ended. In processes 4.7, 4.9, 4.10, 4.12, and 4.13, the values of registers Z, n, C, m, and L are incremented, respectively. In process 4.14, register C
Reset the value of .

As described above, all the processing for combining images into a document is completed, and as a result, the buffer BUF stores the contents shown in Figure 5A, and the character generator CG stores the contents shown in Figure 8. The content as shown is stored, and images can be added to desired positions for each character in the text.

In addition, although the above-mentioned embodiment explained the process of combining images with a document, the present invention is not limited to this, and the present invention is not limited to this, but may also include editing processes for combined images, such as moving the entire image or deleting the entire image. Of course, this can also be done in the same way.

Effects As explained above, according to the present invention, images can be handled in the same way as characters, and instructions can be given in the same way on the display screen, making it easier to control the processing of text and image information. And it can be realized at low cost.

Further, according to the present invention, the operator can easily specify the image position on the display screen.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the circuit configuration of an embodiment of the present invention, FIG. 2 is a diagram showing the key arrangement of the keyboard, FIG. 3A is a diagram explaining the image buffer IBUF, and FIG. 3B is a diagram showing the contents (IW) of the image buffer IBUF, Figures 4A and B are diagrams each showing the contents of the display screen, and Figure 5A is a diagram showing the contents (IW) of the image buffer IBUF.
A diagram explaining the contents of the BUF, FIG. 5B is a diagram showing the contents of the vertical dot number storage register LY and the horizontal dot number storage register LX in this embodiment, and FIG. 6 is a diagram explaining the contents of the document in this embodiment. FIG. 7 is a flowchart showing the control procedure for the process of combining images, FIG. 8 is a flowchart showing the contents of the character generator CG in this embodiment, and FIG. 3 is a flowchart showing a control procedure for write processing. CH...Character input keys, CK...Cursor movement keys, RDK...Image reading designation key, MGK
...Document image combination key, CR...Cursor register, BUF...Buffer, CG...Character generator, CRT...Display device, CRTC...CRT
Controller, RD……Image reading device, RDC……
RD controller, IBUF...Image buffer, CM
……cursor.

Claims (1)

[Scope of Claims] 1. Character storage means for storing characters; Input means for inputting images; Image storage means for storing images input by the input means; Display means for displaying characters and images; an instruction means for indicating a desired position on the display screen of the display means with a cursor; and a size of an area necessary for displaying the image stored in the image storage means is stored in the character storage means. A calculation means for calculating the number of characters in the area required to display the characters, and a code for allocating to each display area an image corresponding to the number of characters calculated by the calculation means. code storage means; and a code stored in the code storage means in each display area corresponding to the number of characters calculated by the calculation means corresponding to the position indicated by the cursor by the instruction means, in descending order of least used codes. and display control means for allocating and displaying images stored in the image storage means according to the code.