JPS5850374B2 - word processor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a word processor that enables the creation of error-free documents quickly and economically.

``Prior Art'' 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. However, in conventional word processors, the typewriter prints out characters at the same time as a single character is input, and although mistypes can be corrected manually for the key data in the memory, they cannot be corrected on the paper that has been printed. In order to create a document without mistypes, it is necessary to automatically print the corrected document in the storage unit again from the beginning (called playback). create·
There was a problem in making recording faster and more economical.

On the other hand, in order to eliminate such inconveniences, high-performance technology is equipped with a display device such as a CRT, and the document is corrected and edited while looking at the display screen, and after confirming that the document is correct on the display device, it is recorded and printed on paper. However, even with this type of device, a one-page document is created and edited, then printed out for the first time through a playback procedure to create a permanent record. In any case, there was still a problem in quickly creating documents.

``Object of the Invention'' The present invention was developed in view of the above circumstances, and it is an object of the present invention to provide a word processor that operates a specified line editing function for each line and automatically prints out the contents of the corresponding line immediately. It is in.

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

"Overall Configuration" FIG. 1 is a block diagram showing an outline of the entire word processor system according to the present invention.

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

The control section 30 decodes the key manual information (code), and if it is a function code, performs the corresponding control, and if it is a data code, writes the data code in 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 larger than the number of lines to be printed.

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

The control unit 30 also monitors the type of data read from the memory 40 and the data display position of the display device 60, and monitors the carriage and the data as read data.
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 section 70.
0 and simultaneously issues a print start signal to automatically print one line of data.

Memory 40 is a floppy disk interface 90
The memory 40 is connected to the floppy disk device 100 through the floppy disk device 100, 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.

In FIG. 1, thick lines indicate data lines and thin lines indicate control lines.

"Embodiment of Control Unit 30" FIG. 2 is a detailed diagram of the control unit 30, and hereinafter, the word processor of the present invention will be explained in more detail using this drawing.

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

Note that the H point is the memory address where the first data of the next line to be displayed on the display device 60 is stored, the P point is the memory address where the next key manual data is stored, and the Q point is where the end code is stored. Each shows a memory address.

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 to be displayed.

307 is a format that specifies the left and right hand margin positions, tab set position, hot zone, blinking data display position, cursor position (display position of the next data on the display screen), margin mask position, line tail position, etc. In the register group, 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 specified by setting the corresponding bit to logic "1".

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

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

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, the flip-flop 313 is a space (sp) in the hot zone, and the flip-flop 314 is a hyphen (-) in the hot zone. , 315 is a carriage return (CR
) and 316 respectively indicate the presence or absence of line feed (LF).

A status flip-flop 317 indicates whether the cursor is on 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 increases the contents of the address register 301 by +1, 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. A comparison circuit that compares the contents of the space address register 310; 323 is an address pointer 30;
8 and the contents of the RHM address register 311.

324 is a Haiphong detection circuit that detects a Haiphong code in data transferred to the print buffer 305; 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. be.

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.

Reference numeral 329 is an input code determination control circuit that determines the key manual code, 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.

"Explanation of Operation" 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, and similarly, the address register 302 stores the 0 point address, and the address register 302 stores the 0 point address.
03 respectively store H point addresses.

At this time, the contents of the memory 40 starting from the H point address are stored in the display buffer 306, and are 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, and ■
is left band margin, ◎ is right hand margin,
O represents the tab set position, ■ represents the range of the hot zone, and ■ represents the cursor.

Here, the hot zone @ specifies the range of permissible misalignment when aligning the ends of sentences in a document to be printed out. Or, it serves as a guideline.

Now, when a new input is made from the keyboard 10 and the key manual 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 manual operation, the display buffer 3
It is necessary to rewrite 06.

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

That is, the H point address of address register 303 is moved to working address register 304, and the contents of display buffer 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 is 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
The address pointer 308 is incremented until it detects ``, and the address pointer is aligned by line feed. Then, as in the case where the LF display flip-flop 316 is reset, register 4 of the format register group 307 -7 are cleared and flip-flops 313-318 are reset.

This completes the data transfer preparation process, and the contents of the address of the memory 40 specified by the working address register 304 are read out and written to the address of the display sixfolder 306 specified by the address pointer 308.

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 state 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.

Further, in this case, the address pointer 308 is not incremented.

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

Address pointer 308 is not incremented. Predetermined processing is similarly performed for other codes.

FIG. 4 and FIG. 5 summarize these processes in a table.

In particular, by performing the process shown in FIG. 5, data is displayed on the display device 60 in accordance with the movement of the print head.

Here, the hot zone area is detected by accessing the hot zone specification register 3 in the format register group 307 using the address pointer 308 and setting the specified bit to 1.
” is up or not.

The readout 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 individually ANDed.
14 set inputs, and space address register 31
It becomes a data latch signal of 0.

Note that the state flip-flop 317 compares the contents of the address pointer 308 and the RHM address register 311 with a comparison circuit 323, and when the two match, the comparison circuit 323
Set by a match signal from

When the flip-flops 313 to 317 are all in the reset state, when the transfer of one data is completed, the working address register 304 is set to +1 by the arithmetic unit 320.
and the memory 4 specified by the address register 304
The contents of the address next to 0 are read, and this is the display buffer 30 pointed to by the address pointer 308 (which pointer has already been updated in the manner of FIG. 5).
It is written to address 6.

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 state 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 such as carriage return and line feed.
Also, even if a Haiphong code is included, it means that it is outside the hot zone.

When the state flip-flop 318 is set, the 0 point address of 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, no data transfer operation from the memory 40 to the display buffer 306 is performed until the next keystroke 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 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 applied to the cursor register 5 of the format register group 307, and a "1" is set in the bit designated by the address pointer 308 at that time.

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

In this way, when the next key input is performed 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 rewritten as before. is executed again, and the rewritten data is displayed on the display device 6.
0 and displayed.

An example of the display is shown in FIG. 7B.

Hereinafter, it is assumed that the data input from the keyboard and the data rewriting operation of the display buffer 306 based on this proceed, and any one of the flip-flops 314 to 317 is set.

In this case, if only the RHM display flip-flop 317 is set, it means that the right hand margin has been reached with no spaces in the hot zone, so the operator is alerted to the hyphenation and the key is pressed again. Place the device in a stopped state until human power is applied.

In other cases, the device will switch to print mode and the printing process will be performed automatically as follows.

First, a case where the Haiphong display flip-flop 314 is set will be described.

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

In this case, the contents of that line are immediately printed out, and the key manual data of the next line is displayed on the display device 60.

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.

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

Note that at this time, data transfer to the display buffer 306 is prohibited.

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

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

Address registers 301 and 304 match, and memory 40
When 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 a set state.

Therefore, a switching signal is applied to 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 contains the H of the memory 40.
One row of data from point to point P (point P is the point that moves each time a new key force is given),
A 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, and as a result, the instruction circuit 327 prints the A termination signal is provided 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
It performs a carriage return operation to detect the code and 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 destroyed.

This is common to all print operations described below.

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

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.

After that, the address register 304 is incremented by 1, and the data 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, and when they match, the contents of the register 304 at that time are transferred to the address register. 303.

These operations are the same as when state flip-flop 314 is set.

The print operation is started when the CR code or LP 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, in this 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. state 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 comparator 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 in the case where 314 is 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
20 is incremented by 1, and the contents are newly registered in the address register 303.

Therefore, in 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.

"Embodiment of Data Discrimination/Control Logic Circuit 342" FIG. 6 shows a specific configuration example of the data discrimination/control logic circuit 312.

This data discrimination/control logic circuit 312 directly transfers the data read from the memory 40 to the display buffer 3.
06, a function to determine the transfer data, and a function to advance the address pointer 308 based on the determination result.

The block 601 outputs the input data from the memory 40 as it is to the screen play buffer 306, and at the same time,
The part that discriminates the data is made up of a so-called decoder matrix.

Space (SP), hyphen (-), carriage return (C) detected in this decoder matrix 601
The discrimination outputs of R) and line feed (LF) become set inputs of state flip-flops 313 to 316 in FIG. 2, respectively.

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 the clock pulse, that is, the address pointer 30
Step 8 stops.

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

Similarly, when the state flip-flop 316 is set, the clock pulse generator 603 and the ±1 circuit 604 keep the address pointer 3
A step of 08 is performed, and when 1'' is sent out, the step is stopped.

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

Carriage return (C
R), line feed (LF), 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.

"Additional Explanation of the Configuration" Note that Figures 2 and 6 actually constitute a part of a microcomputer, for example, and the operation sequence of each part that has been explained so far is controlled by a program. Needless to say.

FIG. 3 summarizes the operation flow.

"Effects of the Invention" As described above, according to the present invention, the specified line editing function works for each line, and the contents of the corresponding line are automatically printed out immediately. It becomes possible to create documents more quickly than before, and the burden on the operator is greatly reduced.

Furthermore, since editing and printing are done line by line, it is easier for the operator to operate as it resembles a conventional typewriter, and it also has the advantage of being inexpensive because the display means only needs to display one line. be.

[Brief explanation of the drawing]

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 flowchart 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 diagram showing a specific configuration example of the data discrimination/control logic circuit, and FIG. 7 is a diagram showing a display example of a display device. It is. 10...Keyboard, 30...Control unit, 40...Memory, 60...
Display device, 80...Printer, 100
...Floppy 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, 313-318...・State flip-flop, 319°320... Arithmetic unit, 321-32
3... Comparison circuit, 324... Haiphone detection circuit, 325... Multiplexer, 32
6...Print start instruction circuit, 327...
...Print end instruction circuit, 328...Plink output control circuit, control circuit. 329・・・Input code judgment

Claims (1)

[Claims] 1. Data input from a keyboard is displayed on a display device, a document is edited line by line while looking at the display screen of the display device, and the document is recorded and printed line by line by a printer. In a word processor, means for checking whether or not a space is inserted into a specific area on the display surface of the display device; A word processor comprising means for instructing the printer to start printing one line of document data. 2. The word processor according to claim 1, wherein when there are a plurality of spaces in the specific area, the document data up to the last space is recorded and printed by a printer. 3. A word processor according to claim 1 or 2, characterized in that a carriage return code is added to the end of one line of document data before sending it to a printer. 4 A word printer that displays text entered from a keyboard on a display device, edits the document line by line while looking at the display screen of the display device, and records and prints the document line by line using a printer. In the processor, means for checking whether or not a hyphen is inserted in a specific area in one line, and in response to detecting that a hyphen is inserted in the specific area, immediately detecting a line of text up to the hyphen. A word processor comprising means for instructing the printer to start printing data. 5. The word processor according to claim 4, wherein a carriage return code is added to the end of one line of document data before sending it to a printer.