JPS6089232A - Character processor - Google Patents

Abstract

PURPOSE:To obtain a character processor having high operability by excluding execution of the display processing whose result is invalidated by the next processing among those display processings which follow the continuous execution of editing processings even if said execution is conducted practically. CONSTITUTION:The 1st input indicated by an input editing indication means starts the 1st editing processing, and the 2nd input indicated next starts the 2nd editing processing. These 1st and 2nd editing processings change documents and then starts the 1st and 2nd display processings respectively. A display means displays the contents of documents and a cursor. A priority deciding means decides the priority between the 1st display processing and the 2nd editing processing according to a fixed system and then delivers the result of decision to a processing control means. Thus the 1st display processing, the 2nd editing processing and the 2nd display processing are controlled by the decided order of execution. A display invalidity deciding means compares the contents of the 1st and 2nd display processings with each other and discontinues the 1st display processing if this processing is invalidated by the 2nd display processing.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a character processing device for creating and editing documents.

Generally, in an apparatus for creating and editing a document, all or part of the document is displayed on a screen, and in response to creation and editing requests from an operator, creation and editing are performed while displaying the results one by one.

Conventionally, this type of device has adopted a system in which, in response to one character input or editing request, the result of the processing is displayed 2, and the next key creation/editing process is started only after the display is completed.

Therefore, if the display takes a long time, it is difficult to accept the next key, which is one of the causes of hindering the operability.

Also, even if there is a device that accepts the next key before the display is completed, the results of each key manual effort will be displayed one by one, even if displaying the first key manual result due to the second key manual effort is completely useless. Because of this, the display of the most recent document that the operator most desires is postponed until a long time ago, so even if it is possible to process consecutive keys, the display cannot keep up, and in the end, the display of the latest document is delayed until the most recent document can be displayed. This causes the operator to have to wait for a long time, which impairs the operability of the operator.

For example, FIG. 1 is a diagram showing the timing of display and editing operations in a conventional device. CRT indicates a screen, and CM indicates a cursor.In 3-1, in response to some editing instruction, such as a request for the next screen, the first display starts from the first line.
-2, it is assumed that the delete key is input when the display ends at the second line size.

The delete key is a key that starts the process of deleting the character at the current cursor position and moving the characters after it forward. The deletion key is not interpreted at this stage. 3-3
When the display ends up to the line where the cursor is,
The deletion key entered in 3-2 is l! Nil is set, and execution of the deletion process is started. The first display process that was paused in 3-4 is restarted, and the state of the document before the deletion process is displayed. Ru.

Only after the first display process is completed, the second display process, which is activated for the deletion process, is started, and the latest document status is displayed.

The object of the invention is to obviate the above-mentioned drawbacks. In other words, display processing whose effect would be nullified by the display processing scheduled to be executed next among the display processing waiting to be executed when editing processing is executed first by consecutive key manual operations. The aim is to realize a character processing device that is excellent in operability by eliminating the need to perform ``execution'' and always displaying documents in the latest state.

The present invention will be described in detail below with reference to the drawings.

FIG. 2 shows an outline of a character processing device according to the present invention.

The first input instructed by the input editing means starts the first creation/editing process +j(j+).Then, the second input instructed starts the second creation/editing process.

? The sl creation/editing process and the second creation/editing process change the document and start the first display process and second display process, respectively. In the first display process and the second display process, the content of the document and the cursor are displayed by the display means. The priority determining means determines the priorities of the first display processing and the second creation/editing processing using a predetermined method 7, and outputs the results to the processing control means.

The processing control means executes the first display processing, the second creation/editing processing, and the second display processing according to the determined priority.
I! This method determines the ht order and controls valley processing.

Size display■I effectiveness judgment means compares the contents of the first display process and the second display process, and if the first display process is invalidated by the second display process, the first display process is invalidated. Interrupt the execution of the process.

FIG. 3 is a block diagram showing an embodiment 1;'i according to the present invention.

In the illustrated configuration, the CPU is a microprocessor that performs calculations, logical judgments, etc. for character processing, and uses an address bus AB, a control bus CB, and a data bus D.
The address buses AB control each component connected to those buses via the microprocessor CPU
An address (i
No. e transfer t le. Control bus CBI-t Transfers and applies control signals for each component controlled by the microprocessor CPU. data bus I)
B transfers data between each component device.

Next, the ROM is a fixed memory exclusively used for outputting if'jP, and stores control procedures and the like by the microprocessor CPU, which will be described later with reference to FIGS. 6 to 8.

RAM is a writable random access memory with a configuration of 1 word and 16 bits, and is used for temporary storage of various data from each component.
M has buffer KBBUF, C91 UF, queue,
PDQ, parameters PDQN, DSTY, NCRX,
NCRY.

Consists of PRY.

Buffer K B B U F stores data input from the keyboard. When the operator presses a key, an interrupt process occurs and the input key data is stored in the buffer K B B U F.

Buffer C0BUFld is a command buffer, and when it is necessary to import key data when performing input editing processing, after confirming that the contents of buffer KBBUF is not empty, the contents of buffer KBBUF are transferred to buffer C0B.
Transfer to UF and clear buffers K B and 13 UF.

n, i and xld-registers.

Parameter PDQN stores a variable that controls the size of queue PDQ.

Parameters DSTY, NCRX, and NCRY are display parameters, and are used to store display start coordinates, new cursor X coordinates, and new cursor Y coordinates when starting display processing 11b.

The parameter PRY is a variable indicating the priority of display processing.

Queue PDQ resumes the state of unfinished display processing f
This is a cue to be stored in case of an emergency.

As shown in the detailed configuration in Fig. 4, the display restart coordinate RR is a field that stores the coordinate from which the display should be restarted.For example, if the display must be started from the third line on the screen, the value "3" is set. Remember.

The new cursor's X coordinate CX and Y coordinate CY are used to memorize the position to which the crane should be moved when it is necessary to move it during display processing.
When the cursor must be moved to the 6th line, the value r6J is stored in the X coordinate and the value "3" is stored in the Y coordinate.

When only moving the cursor, 0 is stored as the display restart coordinate RR.

The size of the current queue PDQ is the parameter PDQNi
For example, when QN=3, it means that three cells are currently stored in the queue PDQ. PDQN=O means that the queue PDQ is empty.

Cell registration and removal from queue PDQ follows the general queue rules, namely FIFO (First In F').
1rstOut).

That is, the processes are executed in the order of numbers 1.2.3, the new process is added fourth in this example, and the parameter P
DQN is incremented by 1. When one process is executed, refilling is performed upward one by one, and the parameter PDQN is incremented by -1.

KB is a keyboard, and is equipped with 1 alphabet key, hiragana key, 4 katakana keys, and 1 function key for inputting character symbols, and FA1 function keys for instructing various functions related to character processing such as a save key. .

1) The ISK stores documents created in a memory for storing fixed-form documents, and the stored document 4 is called up when necessary by instructions from the keyboard.

CR&,j are cursor registers. The contents of the cursor register can be read and written by the CPU.

The CRT controller CRTC, which will be described later, sets the address on the display device CRT corresponding to the address stored here)'L
Display the cursor at the position.

DBUF is a buffer memory that stores document information etc. input from the keyboard KB.

CRTC is the cursor register CR and output DBU.
It plays the role of displaying the contents stored in F on the display CRT.

Further, a CRT is a display device using a cathode ray tube or the like, and a CRT controller controls the display pattern of the tod structure and the display of a cursor on the display device CRT.

Furthermore, CG is a character generator, which generates character signals such as characters, symbols, and cursors to be displayed on the display device CRT.

The character processing device of the present invention, which is composed of each of these components, operates in response to various inputs from the keyboard KB, and when input from the keyboard KB is supplied, an interwoven signal is first sent to the microprocessor CP.
The microprocessor CPU reads various control signals stored in the ROM, and various controls are performed in accordance with these control signals.

(1) Explanation of the embodiment consisting of the above configuration is shown in FIG.
This will be explained with reference to the flowchart in FIG.

First, as shown in FIG. 6, in step 6-1, each time a key is pressed from the keyboard, the key data is stored in the keyboard buffer KBBUF. Load into C0BUF and clear buffer KBBUF.

In step 6-2, the key data on the buffer C0BtJF is analyzed and various creation/editing processes are performed according to its contents. Furthermore, since the state of the document changes as a result of the creation/editing process, display parameters for displaying it are created. Display (memorizes the display start coordinates) STY, stores the new cursor X coordinates (memorizes the new cursor Y coordinates)
(Consists of rammeter NCRY.

Parameter DSTY specifies from which line on the screen the display starts, and parameters NCRX and NCRY
specifies the line and column of the screen where the cursor should be displayed next. If you only need to move the cursor and there is no content to display, DSTY=
Let it be O.

Display is performed in step 6-3.

Further details are shown in FIG.

FIG. 7 shows an exploded view of the contents of step 6-3.

In step 7-1 it is checked whether the parameter PIJQN is equal to 0 to determine whether the queue PDQ is empty. If it is 0, proceed to step 7-4; if it is not 0, proceed to step 7-2.

In step 7-2, the display parameter DST of the current process is
Y, NCRX, and NCRY are registered as the display restart coordinate RR, new cursor X coordinate CX, and new cursor Y coordinate CY of queue PDQ, respectively. Registration is performed by adding to the end of the queue.

In step 7-3, scheduling between display processes is performed, the first cell of PDQ is taken out, and the current display parameters DSTY, NCRX, and NCRY are set. Details are shown in FIG.

In step 7-4, it is determined whether the content of the current process is only cursor display (1sTY=0), and if only cursor display is required, the process branches to step 7-13.

If there is a rewriting display process other than cursor display, the process moves to step 7-5. In step 7-5, the PRYO value is initialized. The initial value of the parameter PRY is "1" when the value of the parameter NCRY is greater than or equal to the parameter DSTY, and is "0" when it is smaller.

In step 7-6, determine whether the line number is larger than the last line number of the parameter DSTY crab screen,
When it becomes larger, the process branches to step 7-14.

In step 7-7 the keyboard buffer KBBUF is
It is determined whether the content of is empty. If it is empty, the process proceeds to step 7-9, and if it is not empty, the process proceeds to step 7-8.

In step 7-8, it is compared whether prty is 0, and if it is 0, the process branches to step 7-15.

In step 7-9, it is determined whether the currently displayed line is the line where the new cursor is located. That is, the parameter N
(Compare JtY and DS'I"Y, if NCRY=D
If it is STY, it is determined that the line is a new cursor line. If it is a new cursor line, proceed to step 7-9, otherwise proceed to step 7-12.

Parameter NCRX in step 7-10.

Move the cursor to the position indicated by NCRY.

In step 7-11, the display processing priority parameter PRY is decreased to O, and the process proceeds to step 7-12.

In step 7-12, the line indicated by the parameter DSTY is displayed for one line, and the parameter DSTY is incremented by 1 as a pointer indicating the display position of 1 loaf. After that, step 7-
Loop to 6.

In step 7-13, set the new cursor to the parameter NCRX
, NCRY, and proceeds to step 7-14.

In step 7-14, it is determined whether the queue PDQ is empty, and if it is empty, the display process is ended, and if it is not empty, the process returns to step 7-3.

In step 7-15, the parameter D at that time is
The values of STY, NCIζX, and NCI Y are registered in the queue PDQ as display restart coordinates, new cursor Registration is performed at the end of queue PDQ.

FIG. 8 shows the contents of step 7-3 in more detail.

In step 8-1, register nVcPDQN+7)
The display restart coordinates on the indicated PDQ are extracted.

In step 8-2, it is determined whether the process indicated by PDQN is only cursor display. In other words, it is determined whether n = O. If only the cursor is displayed (n = O), proceed to step 8-10, and if there is a display other than the cursor (n-I-O), proceed to step 8-3. move on. In step 8-10, the final processing on PDQ (
Display parameters (processing indicated by PDQN)
DSTY, NCRX, NCRY), and then P
D Set all new cursor coordinates for other display processing on Q to N
Reset CRX and NCRY, decrease the value of PDQN by 1, and return.

In step 8-3, loop control Wet initializes register i to 1.

In step 8-4, the loop count register i is PD
It is determined whether QN is exceeded or equal to QN, and when the condition is met, the loop is exited and the process proceeds to step 8-9; when the Φ condition is not satisfied, the process proceeds to step 8-5.

In step 8-5, the i-th digit display restart coordinate is retrieved and substituted into register X.

In step 8-6, X and n are compared, and if X<n, skip to step 8-8, and if X≧n, proceed to step 8-7.

In step 8-7>, the i-th process on queue PDQ is deleted. That is, from (i-1-1)th to (P
DQN)-th processing parameters are shifted up one by one, and the value of PDQN is -1.

In step 8-8, the loop variable i is incremented by 1, and the process loops to step 8-4.

In step 8-9, the first process is extracted from the PDQ. That is, the first processing parameter (display restart coordinates, new cursor X coordinate.

new cursor Y coordinate) as the parameter D S T Y , N
CRX.

Transfer to NCR "l', shift all parameters in queue PDQ up one by one, and set 1 of parameter PDQN.
Decrease direct by 1. Return after a while.

By executing the process control as described above, the process shown in FIG. 5 becomes possible.

That is, the first display starts from the first line at 4-1. Next, in step 4-2, it is assumed that the delete key is input when the display ends at the second line. The deletion key is not interpreted at this stage.

When the display up to the line where the cursor is located is completed in 4-3, the delete key input in 4-2 is interpreted and execution of the deletion process is started.

In 4-4, the contents of the second display process started for the deletion process and the temporarily stopped first display process are compared,
It is determined whether the effect of the first display process is nullified by the second display process. In this case, since it is invalid, the first display process disappears and execution of the second display process is started.

In the embodiment of the present invention, processing is performed on the assumption that the screen will never scroll, but there may be cases where the new cursor moves off the screen and the screen scrolls, or when a scroll request is made,
Even if there is an editing instruction such as a previous screen/next screen request and screen scrolling must be taken into consideration, the same process can be performed.

Furthermore, although priority up is determined each time one line is displayed, it may be determined each time one character is displayed, or the priority may be determined at regular intervals based on time. The gist of the present invention will not be diminished even if the measurements are performed at completely irregular intervals.

As is clear from the above description, according to the present invention, even if the editing process is executed continuously, the accompanying display process is not performed.
If there is something that would be useless, it will be eliminated, which can reduce the overall time required for display processing, and the latest document status will always be displayed, so operators can confidently input keys continuously. A character processing device with excellent operability can be realized.

[Brief explanation of drawings]

FIG. 1 is a diagram explaining a conventional processing device, FIG. 2 is a diagram explaining the concept of a character processing device according to the present invention, FIG. 3 is a block diagram explaining an example of an actual HFP according to the present invention, and FIG. 5 is a structural diagram of the queue PDQ, FIG. 5 is an explanation of the operation of the embodiment of the present invention, and FIGS. 6 to 8 are diagrams showing the control procedure of the embodiment of the present invention. PDQ...°Q, PDQN・I)STY-NCRX
・NCRY-PRY...parameter. Applicant Canon Co., Ltd.

Claims (1)

[Claims] an input/edit instruction means for instructing editing processing such as character input, insertion, deletion, and cursor movement; and displaying a document created and edited by the input/edit instruction means on a screen;
a display means for displaying as a cursor the position on the document where the current input editing instruction is to be executed;
display process, and the second one that is activated by another creation and editing instruction
A priority determination means for determining which process should be processed first when both the creation and editing processes exist, and Detection means for detecting the existence of the second creation/editing process, and when the existence of the second creation/editing process is detected in Appendix 4, the priority is determined by the above-mentioned priority quick decision means I-1 According to the result, the first If the priority of display processing is high, the first display processing is executed first, then the second creation/editing processing is executed, and then the second display processing accompanying the second creation/editing processing is executed. , if the priority of the first display process is low, first execute the second creation/edit process, then execute the first display process,
Next, the processing control means executes the second display processing accompanying the second creation/editing processing, and the priority determination means
When it is determined that the priority of the display processing is low, it is determined whether the effect of the first display processing is nullified by the second display processing accompanying the creation/editing processing whose priority is determined to be good. a display invalidity determining means for disabling the display, and suspending execution of the first display process when the first display process is determined to be invalid. Device.