JPH0642138B2 - Document processor - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a document processing device such as a Japanese word processor.

2. Description of the Related Art In recent years, with the progress of office automation, document processing devices such as Japanese word processors have begun to rapidly spread in the office field. A conventional document processing apparatus is shown, for example, in “Takeuchi, Hitoshi,“ Newton Separate Volume All-New Edition ”, Kyodosha Co., Ltd. (P125-126). Hereinafter, a conventional document processing apparatus will be described with reference to the drawings. FIG. 3 is a block diagram of a conventional document processing apparatus. In FIG. 3, 1 is a display device such as a CRT, 2 is a font pattern memory for storing a font pattern of characters, 3 is a display buffer for holding code data for one screen, and 4 is a character code in the display buffer 3. A screen control unit for displaying on the CRT 1 using the font pattern in the font pattern memory 2, 5 is a text code memory for holding document data, and 6 is a character code for one screen cut out from the text code memory 5 and displayed in the display buffer 3. A text code cutout unit 7 to be stored is an input means such as a keyboard.

Problems to be Solved by the Invention However, the above configuration has the following drawbacks. For example, when a screen control key such as a cursor key is continuously pressed on the keyboard 7 to perform vertical scrolling / horizontal scrolling continuously, the text code cutout unit 6 receives the strobe signal 701 and the screen control code 702 from the keyboard 7. The character code is cut out from the text code memory 5 and stored in the display buffer 3. Strobe signal 7 corresponding to screen control code 702
If the processing is slow compared to the repeat time of 01,
The scroll command of a plurality of lines or a plurality of digits is missed while performing the cutting process once. In addition, even if the screen control code is stored in the input buffer, etc., the scroll operation will continue after releasing the key, and the screen that the operator really wants to see will go too far. Was.

The present invention has been made in view of the above-mentioned drawbacks, and the document processing capable of controlling the scroll operation when the processing speed of the screen cutout such as the scroll, the horizontal scroll and the like cannot catch up with the repeat input of the screen control key. The purpose is to provide a device.

Means for Solving the Problems The present invention provides a strobe signal repeatedly at a constant cycle when the screen control key is pressed and held for a predetermined time or longer, and when the key that has been pressed and held is released, A repeat control unit that generates a repeat cancellation signal indicating that the repeat state has been released, a repeat count unit that counts the number of strobe signals in the repeat state, a text code memory that holds document data, and the repeat count unit. And a cut-out position calculation unit that calculates where to display from the text code memory using a signal from the input unit, and a text code string is cut out from the text code memory based on the information of the cut-out position calculation unit. A document processing device having a text code cutout unit for storing in the display buffer. .

Effect The present invention has the above-described configuration, and when the screen control keys such as the cursor key and the roll-up / roll-down keys are continuously pressed to scroll the screen vertically and horizontally,
By detecting the number of repetitions of the screen control code and changing the number of lines / digits of the screen cutout in proportion to the number of repetitions, the screen desired by the operator can be displayed at high speed. Further, by using the repeat cancellation signal, the number of lines / digits for screen cutout is returned to the initial value and the scrolling operation of the screen is stopped, so that the screen desired by the operator can be easily displayed without overshooting the screen.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of a document processing apparatus according to an embodiment of the present invention. In FIG. 1, 1 to 5 are the same as the constituent elements of the conventional example of FIG. 7'is an input means such as a keyboard, which is a strobe signal 701, a key code 702,
A signal 703 indicating that the screen control key is pressed is transmitted. A repeat control unit 8 receives a signal 703 from the keyboard 7 ′, sends a repeat strobe pulse 801 at a constant cycle after a predetermined time has elapsed, and outputs a signal 70
When 3 is cut off, it is detected and repeat cancellation signal 802
Is sent. Reference numeral 9 is a repeat counting unit, 10 is a cutout position calculating unit, and FIG. 2 is a more detailed block diagram of the repeat counting unit 9 and the cutout processing unit 10. 9 in FIG.
Reference numerals 02 and 904 denote n-ary counters, which divide the frequency of the signal 801 from the repeat controller 8 and use the signal 802 to generate the n-ary counter 9.
02 is reset, and the n-ary counter 904 reads the content of the constant register 903. A decoder 1003 decodes the code signal 702 from the keyboard 7'and sends out signals 10031 to 10034 when it is a screen control code. The signal 10031 is sent when the code is a code for moving to the right on the screen.
Is sent when the code is for moving to the right on the screen. The signal 10033 is sent when the code is a code for moving downward on the screen.
34 is sent when it is a code for moving upward on the screen. An X register 1005 holds the position of the screen cutout in the X coordinate direction. An adder / subtractor 1004 adds the signal 901 from the repeat count section and the value of the X register by the signal 1031 and also outputs the signal 1032.
The signal 901 is subtracted from the value of the X register. The result of the addition / subtraction is stored in the X register again, and at the same time, it is sent to the text code cutout unit 6'as a signal 1001. The Y register 1007 and the adder / subtractor 1006 perform the same operation as described above in the Y coordinate direction. The text code cutout unit 6 ′ uses the signals 1001 and 1002 from the cutout position calculation unit 10 to detect the text codes 5 to 1
The text code for the screen is cut out and stored in the display buffer 3.

The operation of the above embodiment will be described with reference to the drawings. When the screen control key is continuously pressed from the keyboard 7 ', the signal 703 is sent to the repeat control unit 8. After a lapse of a fixed time, the repeat controller 8 outputs a repeat strobe pulse 801 having a certain cycle to the repeat count unit 9
Send to. The repeat counting unit 9 receives the pulse 801, and divides the frequency by the n-ary counters 902 and 904. Eg 1
Assuming that the counter is a 0-ary counter, when the repeat strobe pulse 801 is received 20 times, the output signal 901 of the counter 904 becomes 2. At the same time, in the cut-out position calculation unit 10, the decoder 1003 decodes the key code 702 and generates any one of the signals 10031 to 10034. For example, if the signal 702 indicates scrolling to the right of the screen, the signal 10031 is added / subtracted by the adder / subtractor 1004.
Sent to. The adder / subtractor 1004 outputs X by the signal 10031.
Contents of register 1005 and signal 9 of repeat count section
01 is added and the X coordinate 1001 newly cut out from the text code memory 5 is transmitted. At this time, repeat
If the number of strobe pulses 801 is up to n, the value of the signal 901 is the same as the value of the constant register 903.
When it exceeds n times, it increases by 1 every n times. Therefore, the X coordinate 10
The rate of increase of 01 is proportional to the time that the key is held down. As a result, the number of cut-out digits for scrolling in the X-coordinate direction increases from the text code memory 5 in proportion to the key pressing time, and the screen desired by the operator can be reached earlier. The same can be said for the Y coordinate. When the screen control key is no longer pressed and the signal 703 from the keyboard 7'is cut off, the repeat control unit 8 sends a repeat cancel signal 802 to the repeat count unit. The repeat cancel signal 802 resets the n-ary counter 902 and causes the n-ary counter 904 to read the contents of the constant register 903. As a result, the XY coordinates of the cutout from the text code memory 5 are fixed and the display is stopped on the screen at the position where the operator releases the key.

In this embodiment, it is assumed that all the display buffers for one screen are rewritten and the entire screen is rewritten, but it is also possible to have a plurality of buffers for displaying only a part of the screen.
At this time, scroll control can be performed for each partial screen.

As described above, according to the present invention, when the time required for displaying text is longer than the time required for the repeat input operation of the screen control key from the keyboard, it is proportional to the time when the key is pressed. By increasing the number of scroll lines / columns, the screen desired by the operator can be displayed quickly. Further, since the scroll operation is stopped when the screen control key is released, the screen desired by the operator can be quickly displayed without overshooting the display, which has a great practical effect.

[Brief description of drawings]

FIG. 1 is a block diagram of a document processing apparatus according to an embodiment of the present invention, FIG. 2 is a more detailed block diagram of the repeat count section and cutout position calculation section in FIG. 1, and FIG. 3 is a conventional document processing apparatus. It is a block diagram. 1 ... Display device such as CRT, 2 ... Font pattern memory, 3 ... Display buffer, 4 ... Screen control unit, 5 ...
Text code memory, 6 '... Text code cutout section, 7' ... Input means such as keyboard, 8 ... Repeat control section, 9 ... Repeat count section, 10 ... Cutout position calculation section.

Claims (1)

[Claims] 1. A display means such as a CRT, a display buffer,
A font pattern memory for holding a font pattern of characters; a screen control unit for displaying the contents of the display buffer on the display unit by using the pattern in the font pattern memory; an input unit such as a keyboard; and a screen control key. A repeat signal that repeatedly sends a strobe signal at a fixed cycle when the key is held down for more than a specified time, and generates a repeat cancel signal indicating that the key has been released from the repeat state. A control unit, a repeat count unit that counts the number of times of the strobe signal in the repeat state, a text code memory that holds document data, and a repeat count unit and a signal from the input unit on the text code memory. A cutout position calculation unit that calculates where to display, and the cutout Document processing apparatus characterized by having a text code cutout portion to be stored in the display buffer is cut out text code string based on the information of 置算 out section from the text code memory.