JPS586958B2 - word processor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a word display with a single line display device.
The processor, in detail, the word processor that made it possible to input data outside the left hand margin with simple operations.
It concerns processors.

As is well known, there are high-end typewriter devices that are equipped with high-performance document editing functions aimed at quick recovery from input errors and flexibility in editing.

This is called a word processor. Usually, this type of word processor is equipped with a display device such as a CRT, and the operator corrects and edits the document while looking at the display screen. Each time you want to input data, you have to change the position of the margin mark on the display screen, which has the drawback that it is not possible to quickly edit and print out a document.

SUMMARY OF THE INVENTION An object of the present invention is to provide a word processor with a one-line display that can automatically cancel the margin of that line and erase the margin mark on the display by operating a special key.

Hereinafter, the content of the present invention will be explained in detail with reference to the drawings.

FIG. 1 is a block diagram schematically showing the entire word processor system according to the present invention.

In the figure, numeral 10 is a keyboard on which character/numeric keys, function keys, etc. are arranged, and key input information from the keyboard 10 is taken into the control section 30 through the keyboard interface and buffer section 20.

The control section 30 decodes the key input information (code), and if it is a function code, performs the corresponding control, and if it is a data code, writes the decode code into the memory 40.

The memory 40 has a storage capacity for one page of prints, for example.

Of course, this is just an example, and the capacity of the memory 40 may be sufficient for several lines to be printed.

In parallel with this key input operation, the control unit 30 reads one line of data from the memory 40 and transfers it to the CRT.
The signal is applied to a display device 60 having a display screen for one line through the drive and interface section 50 for display.

The control unit 30 also monitors the type of data read out from the memory 40 and the data display position on the display device 60, and monitors the type of data read out from the memory 40 and the data display position on the display device 60.
When a code such as a return (CR) or line feed (LF) is detected, or when the data display position falls within the right hand margin (RHM), the data for one line is sent to the printer 8 through the printer interface unit 70.
0 and simultaneously issues a print start signal to automatically print one line of data.

Memory 40 is a floppy disk interface 9
The memory 40 is connected to the floppy disk device 100 through the memory 40, and when tabulation of, for example, several lines to one page, which is determined by its storage capacity, is completed, the contents of the memory 40 are transferred to the floppy disk device 100.

Note that thick lines indicate data lines, and thin lines indicate control lines.

By the way, the keyboard 10 is provided with a margin release key, and the cursor (mark indicating the display position of the next input data) on the display surface of the display device 60 is set to RH.
When it is in M, pressing the margin release key releases the margin (that is, the RHM mark on the display surface is masked), making it possible to input data beyond the RHM.

The same can be said about LHM. This is the feature of the word processor of the present invention.

Note that if data is input beyond the RHM, the printing operation will be started by subsequently detecting a code such as CR or space.

FIG. 2 is a detailed diagram of the control unit 30, and the word processor of the present invention will be explained in more detail hereinafter.

In FIG. 2, reference numeral 40 denotes a memory having a storage capacity of several lines or one page as explained in FIG. 1, and the diagonally shaded area indicates data.

The H point marked on the memory 40 is the memory address where the first data of the line to be displayed on the display device 60 is stored, the P point is the memory address where the next key input data is stored, and the Q point is the memory address where the end code is stored. Each memory address is shown in the table below.

301 is an address register indicating the P point address of the memory 40, 302 is an address register indicating the Q point address,
303 is an address register indicating the H point address; 304
is a working address register during data transfer.

305 is a print buffer that stores one line of data to be output to the printer 80; 306 is a display device 60;
This is a display buffer that stores one line of data displayed in .

307 is the left and right hand margin position, tab set position, hot zone, blinking data display position (not used here), cursor position, margin mask position,
This is a group of format registers that specify line sotail positions, etc., and the bit position of each register corresponds one-to-one to the character position of display buffer 306.

In this format register group 307, each of the above positions is designated by setting the corresponding bit to logic "1".

An address pointer 308 indicates the working address of the display buffer 306 and format register group 307.

309 is an LHM address register that stores the address of the left hand margin (LHM), and 310 is an SP address that stores the address on the memory 40 of the space code (SP) that has entered the hot zone during data transfer to the display device 60. It is a register.

Reference numeral 311 indicates an RHM address register that stores the address of the right hand margin (RHM).

312 is a data discrimination/control logic circuit that discriminates the type of data transferred from the memory 40 to the display buffer 306 and outputs various control signals.

313 to 316 are state flip-flops set by the output control signal of the data discrimination/control logic circuit 312, flip-flop 313 is the space (SP) in the hot zone, flip-flop 314 is the hyphen (-) in the hot zone, and 315 is the space (SP) in the hot zone. Carriage return (CR)
) and 316 respectively indicate the presence or absence of a line feed (LF).

A status flip-flop 317 indicates whether the cursor is in the RHM, and a status flip-flop 318 indicates whether data to be transferred to the display buffer 306 remains in the memory 40.

319 is an arithmetic unit that calculates the contents of the address register 301, 320 is an arithmetic unit that increases the contents of the address register 304 by 1, 321 is a comparison circuit that compares the contents of the address registers 301 and 304, and 322 is a working address register 304 and a space. A comparison circuit that compares the contents of the address register 310, 323 is an address pointer 308
This is a comparison circuit that compares the contents of the RHM address register 311 and the RHM address register 311.

324 is a hyphen detection circuit that detects a hyphen code in the data transferred to the print buffer 305, and 325 is a multiplexer that switches and outputs data from the memory 40 or a CR code from the outside.

326 is a CR from among the output data of the multiplexer 325.
Similarly, 327 is a print end instruction circuit that detects the CR code and LF code from the output data of the print buffer 305 and issues a print end signal. It is.

Reference numeral 328 denotes a printer output control circuit that controls data transfer between the print buffer 305 and the printer 80 according to instructions from a print start signal and a print end signal.

329 is an input code determination control circuit that determines the key input code and divides it into data and function code, transfers the data to the memory 40, and outputs the function code to a desired location of the device as a control signal.

FIG. 3 shows a flowchart for explaining the operation of FIG. 2.

Now, assume that the memory 40 contains data in the shaded area as an initial state.

As previously explained, the address register 301 stores the P point address of the memory 40, similarly, the address register 302 stores the Q point address, and the address register 303 stores the H point address. ing.

At this time, the contents of the memory 40 starting from the H point address are stored in the display buffer 306, which is taken into the display device 60 together with each piece of information in the format register group 307 and displayed on its display screen.

Figure 7A shows an example of format display.
(a) represents the left hand margin, (b) represents the right hand margin, (c) represents the tab set position, (d) represents the range of the hot zone, and (e) represents the cursor.

Now, when a new input is made from the keyboard 10 and the key input code is determined to be data by the input code determination control circuit 329, the data is transferred to the address register 3.
It is written to the P point address of the memory 40 designated by 01.

Thereafter, the address register 301 is incremented by 1 by the arithmetic unit 319.

Along with this key input operation, the display buffer 3
06 is rewritten.

In this case, first, data transfer preparation processing is executed as follows.

That is, the H point address of the address register 303 is transferred to the working address register 304, and the contents of the display puffer 306 are cleared.

At the same time, the contents of LHM address register 309 are set in address pointer 308.

Thereafter, the state of LF display flip-flop 316 is checked, and if it has been reset, registers 4-7 of format register group 307 are cleared and flip-flops 313-318 are reset.

On the other hand, when the LF display flip-flop 316 is set, the line tail register 7 of the register group 307 is set to “
The address pointer 308 is advanced until it detects 1", and the address pointer 308 is aligned by the line feed, and then the LF display flip-flop 3
Similarly to the case where 16 is reset, registers 4 to 7 of format register group 307 are cleared and flip-flops 313 to 318 are reset.

This completes the data transfer preparation process, and the contents of the address in the memory 40 specified by the working address register 304 (that is, the contents of the H point address) are read out, and the display button specified by the address pointer 308 is read out. It is written to the address of file 306.

In parallel with this data transfer from memory 40 to display buffer 306, the transferred data is discriminated by data discrimination/control logic circuit 312, and the following processing is performed depending on the type.

That is, if the data is character, numeric, or symbol data, the address pointer 308 is incremented by 1 to prepare for the next data transfer.

In the case of a space code, the state flip-flop 313 is set only when entering the hot zone, and the contents of the working address register 304 at that time are transferred to the space address register 310.

The address pointer 308 is incremented by 1 regardless of whether it is inside or outside the hot zone.

In the case of a Haiphong code, the status flip-flop 314 is set only when the hot zone is entered.

The address pointer 308 is incremented by 1 regardless of whether it is inside or outside the hot zone, as in the case of the space code.

In the case of a carriage return code, the status flip-flop 315 is set regardless of whether it is inside or outside the hot zone.

Also, in this case, the address pointer 308 does not continue to increment.

In the case of a line feed code, the state flip-flop 316 is set and the bit of register 7 in the format register group 307 specified by the address pointer 308 at that time is set to "1".

Address pointer 308 is not incremented.

Predetermined processing is similarly performed for other codes.

Status flip-flop 317 connects address pointer 308 and RH if the margin release key is not pressed.
The contents of the M address register 311 are compared by the comparison circuit 323, and if the two match, it is set.

On the other hand, when the margin release key is pressed, the setting operation of the state flip-flop 317 is prohibited, and is then set only after the carriage return code and space code are detected.

FIGS. 4 and 5 show these processes in a table.

Note that in order to detect the hot zone area, the hot zone designation register 3 in the format register group 307 is accessed using the address pointer 308, and the designated bit "
All you have to do is check whether 1” is standing or not.

The read signal from the hot zone designation register is individually ANDed with the discrimination signal of the data discrimination/control logic circuit 312, and the state flip-flops 313 and 3 are respectively ANDed.
14 set inputs, and space address register 31
It becomes a data latch signal of 0.

As described above, one piece of data is transferred from the memory 40 to the display buffer 306, and if the data is not an end code, the working address register 306
04 is incremented by 1 by the arithmetic unit 320.

At this time, if all the flip-flops 313 to 317 remain in the reset state, the contents of the next address in the memory 40 specified by the address register 304 are read out, and this is transferred to the address pointer 308 (the pointer is shown in FIG. The display buffer 306 is written to the address specified in the display buffer 306 (which has already been updated in the mode).

While state flip-flops 314-317 are reset,
This data transfer is repeated until the display buffer 3
06 is rewritten.

During this time, the comparison circuit 321 is connected to the address registers 301 and 3.
04, and if the contents of the two match, a match signal is sent out.

This match signal sets status flip-flop 318.

In other words, all data transfer from the memory 40 to the display buffer 306 is completed before the right hand margin is reached, and furthermore, the transferred data does not include codes for carriage return, line feed, etc.
Also, even if a Haiphong code is included, it means that it is outside the hot zone.

When the status flip-flop 318 is set, the Q point address in the address register 302 is transferred to the working address register 304, and the end code is read from the memory 40.

When the data discrimination/control logic circuit 312 detects this end code, the operation of transferring data from the memory 40 to the display buffer 306 is not executed until the next key input is performed.

During this time, the contents of display buffer 306 will continue to be displayed by display device 60.

This is a case where the end code is stored in the memory 40 in advance, but if the end code is not used, the memory 40 is
The data transfer operation from 0 to the display buffer 306 is stopped to prepare for the next key input.

On the other hand, the match signal from the comparison circuit 321 is also given to the cursor register 5 of the format register group 307, and the bit designated by the address pointer 308 at that time is set to "1".
is erected.

In other words, this indicates the display position of the next key input data.

In this way, when the next key input is made and it is data, the data is stored at the address in the memory 40 specified by the address register 301, and at the same time, the display buffer 306 is written as before. The rewriting is executed again, and the rewritten data is displayed on the display device 6.
0 and displayed.

FIG. 7B shows an example of the display.

Assume that the data input from the keyboard 10 and the rewriting operation of the data in the display buffer 306 based on this progress, and the flip-flops 313 to 316 reach the right hand margin position while remaining in the reset state.

In other words, this means that you have reached the right hand margin with no spaces in the hot zone.

In this case, the contents of address pointer 308 and RHM address register 311 match, and a match signal is detected from comparison circuit 323 on output line l1.

As a result, in normal operation, the RHM flip-flop 317 is set through the AND gate G12 and the OR gate G14, alerting the operator to the hyphenation, and stopping the device until a new key input is made.

On the other hand, when the cursor is at the right hand margin position,
Assume that the margin release key on the keyboard 10 is pressed.

In this case, a margin release code is stored in memory 40 as before, and it is transferred to display buffer 3.
At this time, the data discrimination/control logic circuit 312 determines that the transferred data is a margin release code, and the address pointer 30 of the margin mask register 6 in the format register group 307
Bit “1” indicated by 8 (indicating RHM position)
is erected.

As a result, inverter gate G11 prohibits energization of AND gate G10, and the margin mark on the display surface of display device 60 is erased.

At the same time, the inverter date G1 causes the AND gate G
12 is also prohibited, RHM flip-flop 317
remains reset.

Therefore, it is possible to continue inputting data using the keyboard 10.

8A to 8C show display examples when the margin release key is pressed, where "φ" indicates the margin release display and "Z" indicates input data after the margin release key is pressed.

When data is input to the right of the right hand margin and the contents of the address pointer 308 become larger than that of the RHM address register 311, the comparison circuit 3
23 begins to send a "1" signal to the output line l2.

Therefore, when the space key is pressed thereafter, the AND gate G13 is activated and the RHM flip-flop 317 is set for the first time.

The RHM flip-flop 317 is reset by flip-flops 313 to 3 prior to printing out one line, which will be described later, and when the next line of data is transferred from the memory 40 to the display buffer 306.
This is done together with 16 resets.

The above operation is for inputting data to the right of the RHM, but it is also possible to input data to the left of the LHM in the same manner while applying backspace.

Next, the printing operation will be explained.

This is done automatically when any of the flip-flops 314-317 is set, and the apparatus switches to print mode.

First, the case where the high-phone display flip-flop 314 is set will be explained.

From FIG. 4, the flip-flop 314 is set when one line of key input advances to the hot zone and a hyphen is added for a line break.

In this case, the contents of that line are immediately printed out, and the display device 60 displays the key input data of the next line.

Its operation is as follows. When the set state of the flip-flop 314 is detected, the address register 30 is set again.
3 H point address is working address register 30
4, and the contents of the address in the memory 40 indicated by the address register 304 are transferred to the print buffer 305 through the multiplexer 324.

Writing to the print buffer 305 is performed at the timing of the input strobe.

In addition, in this print mode, display buffer 3
Data transfer to 06 is prohibited.

Thereafter, the working address register 304 is incremented by 1 by the arithmetic unit 320.

The contents of the working address register 304 are compared with the contents of the address register 301 by a comparison circuit 321, and the print buffer 305 is
Data transfer to is repeated.

Address registers 301 and 304 match, and memory 40
At the time when the data transfer from the print buffer 305 to the print buffer 305 is completed, the Haiphon detection circuit 324 has detected the Haiphon code.

Also, at this time, the flip-flop 314 is in the set state.

Therefore, the switching signal D is applied to the multiplexer 325.

As a result, multiplexer 325 selects a preset carriage return code (CR code) and transfers it to print buffer 305.

In other words, the print buffer 305 has H of the memory 40.
One line of data from point to point P (point P is a point that moves each time a new key input is given), and then add C
'R code is added and stored.

After that, the working address register 304 at that time
The contents of are moved to address register 303.

That is, a new H point address is registered.

On the other hand, the CR code selected by the multiplexer 325 and transferred to the print buffer 305 is detected by the print start instruction circuit 326;
A print start signal is given to the printer output control circuit 328 from.

When the printer output control circuit 328 receives the print start signal, it issues an output strobe signal to the print buffer 305 , reads the data stored in the print buffer 305 sequentially while checking the ready signal of the printer 80 , and outputs the data to the printer 80 .

In this way, when the last data, that is, the CR code is read out from the print buffer 305, the CR code is output to the printer 80 and simultaneously detected by the print end instruction circuit 327. A print end signal is given to printer output control circuit 328.

Upon receiving this print end signal, the printer output control circuit 328 stops the output strobe to the print buffer 305, thereby completing reading data from the print buffer 305.

During this time, the printer 80 sequentially prints out the data given through the print output control circuit 328, and when a CR code is detected, performs a carriage return operation to prepare for the next print line.

That is, once one line of data is transferred from the memory 40 to the print buffer 305, the print operation for one line is performed independently of the display display operation under the control of the print output control circuit 328. It will be done.

This is common to all subsequent print operations.

Next, the case where the state flip-flop 315 or 316 is set will be described.

In this case as well, the contents of the address register 303 are transferred to the working address register 304, and the contents of the address in the memory 40 indicated by the address register 304 are transferred to the print buffer 305.

Thereafter, the address register 304 is incremented by 1, and the transfer from the memory 40 to the print buffer 305 is repeated in synchronization with the input strobe until the address registers 301 and 304 match.
4 is moved to address register 303.

These operations are the same as if state flip-flop 314 were set.

The print operation is started when the CR code or LF code read from the memory 40 passes through the multiplexer 325 as it is, is detected by the print start instruction circuit 326, and a print start signal is issued to the printer output control circuit 328. .

Next, a case will be described in which the state flip-flop 317 is set and the flip-flop 313 is also set at this time.

An example of the display at this time is shown in FIG. 7C.

That is, this is when the margin release key is not pressed, in which case the right hand margin (RHM)
The data up to the space closest to is printed out, and the data after that is newly displayed on the display device.

Its operation is as follows. Status flip-flop 31
When the set state of 3 and 317 is detected, as before,
The contents of the address register 303 are transferred to the working address register 304, and the contents of the address in the memory 40 indicated by the address register 304 are transferred to the print buffer 305.

After that, the working address register 304 is incremented by 1.

At this time, as is clear from FIG. 4, the space address register 310 stores the address on the memory 40 of the space closest to the RHM.

When the working address register 304 is incremented by 1,
The contents are compared with the contents of the space address register 310 by the comparison circuit 322, and data transfer from the memory 40 to the print buffer 305 is repeated until the two match.

When the address registers 304 and 310 match, a match signal is output from the comparison circuit 322, and the data transfer to the space closest to the RHM is completed. At this time, the match signal E switches the multiplexer 325, and C as if it were set.
The R code is added.

When this CR code is detected by the print start circuit 326, the print operation is started.

On the other hand, the working address register 304 is incremented by 1 by the arithmetic unit, and its contents are newly registered in the address register 303.

Therefore, in the subsequent data transfer to the display buffer 306, the next data in the space closest to the RHM is read out, and the display buffer 306 is rewritten.

The same applies when the margin release key is pressed and data is input to the right of the RHM, and then the flip-flops 313 and 317 are set by a space code.

FIG. 6 shows a specific example of the configuration of the data discrimination/control logic circuit 312.

As described above, the data discrimination/control logic circuit 312 has the function of directly transferring the data read from the memory 40 to the display buffer 306, the function of discriminating the transferred data, and the function of transferring the data to the address pointer 30 based on the discrimination result.
It has the function of advancing 8.

Block 601 is a section that outputs input data from memory 40 as is to display buffer 306 and at the same time discriminates the data, and is comprised of a so-called decoder matrix.

Space (SP), hyphen (-), and carriage return (C) detected in this decoder matrix 601
The determination outputs of R) and line feed (LF) become set inputs of the state flip-flops 313 to 316 shown in FIG.

602 is a flip-flop, 603 is a clock pulse generator, and 604 is a ±1 circuit.

The ±1 circuit 604 is connected to the address pointer 308 in FIG.
+1, and when backspace (BSP) is detected -
Do 1.

Note that the strobe signal is issued every time one data transfer is performed, and the above-mentioned +1 or -1 is executed at the timing of generation of the strobe signal.

When a tab is detected in decoder matrix 601, flip-flop 602 is set.

As a result, the clock output of the clock pulse generator 603 is applied to the ±1 circuit, and during this time the address pointer 30
8 steps continue.

When the address pointer 308 advances and "1" is sent out from the tab register 2 of the format register group 307, the flip-flop 602 is reset, which causes the sending of a clock pulse, that is, the address pointer 3
08's progress stops.

At this time, the address pointer 308 is pointing to the target tab position.

Similarly, when state flip-flop 316 is set, clock pulse generator 603 and ±1 circuit 604 increment address pointer 308 until a "1" is sent from line tail register 7 of format register group 307. When this is done and "1" is sent out, the increment stops.

That is, this is the process of positioning the address pointer 308 using the line feed described above.

Carriage return (C) in decoder matrix 601
R), line feed (LP), half line feed (HLF), half reverse line feed (HRLF)
), margin release, or end code is detected, the operation of the ±1 circuit 604 is prohibited.

This is easily understood from the table in FIG.

2 and 6 actually constitute a part of a microcomputer, for example, and it goes without saying that the operation sequences of the various parts described so far are controlled by a program.

FIG. 3 summarizes the operation flow.

As described above, according to the word processor of the present invention, when it is desired to input data outside the left hand margin and right hand margin, the margin can be specifically and automatically canceled for that line without changing the margin each time. It is expected that the operability of this type of word processor will be improved.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the overall configuration of a word processor according to the present invention, FIG. 2 is a diagram showing an embodiment of the control section of FIG. 1, FIG. 3 is a flow chart for explaining the operation of FIG. 2, and FIG. 4 and 5 are functional explanatory diagrams of the data discrimination/control logic circuit in FIG. 2, FIG. 6 is a specific configuration example of the data discrimination/control logic circuit, and FIGS. 7 and 8 are tables of the display device. It is a figure which shows an example. 10...Keyboard, 30...Control unit, 40...Memory, 60...
Display device, 80...Printer, 100
...Flotspie disk, 301-304...
...Memory address register, 305...
Print buffer, 306...Display buffer, 307...Format register group,
308...address pointer, 309...
... LHM address register, 310 ... Space address register, 311 ... RHM address register, 312 ... Data discrimination/control logic circuit, 313 to 318 ...・State flip-flop, 319, 320... Arithmetic unit, 321-3
23... Comparison circuit, 324... Haiphone detection circuit, 325... Multiplexer, 3
26...Print start instruction circuit, 327...
. . . Print end instruction circuit, 328 . . . Printer output control circuit, 329 . . . Input code determination control circuit.

Claims (1)

[Scope of Claims] 1. Displaying data input from a keyboard on a display device having a one-line display surface, modifying and editing a document while looking at the display surface of the display device, and recording and printing the document using a printer. In a word processor,
A margin release key is provided on the keyboard, and when the press of the margin release key is detected, the margin of the corresponding line displayed on the display device is released, and then the left hand is pressed until a key instructing a line feed is pressed. A word processor characterized in that it is provided with a control means that allows data to be continuously inserted outside the margin or the right hand margin and restores the margin after a line feed. 2. Claim 1, characterized in that, when the control means detects pressing of a margin release key, it erases the margin mark displayed on the display device, and redisplays the margin mark after a line break. word of
processor.