JPS6314371B2 - - Google Patents

Description

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

As is well known, there are high-end typewriter devices that are equipped with high-performance document collection functions for the purpose of rapid recovery from misinputs 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 each character is input, and although typos can be corrected for the key input data in the memory, the data is printed once on the paper. In order to create a document with no typos, it is necessary to automatically print the corrected document in the storage unit again from the beginning (this is called playback). There was a problem in creating and recording documents more quickly and economically. On the other hand, in order to eliminate this inconvenience, a display device such as a CRT is installed,
There is a high-performance device that corrects and edits the document while looking at the display screen, confirms that there are no errors on the display, and then records and prints the document on paper. After a number of documents have been created and edited, they are printed for the first time using the playback procedure to create a permanent record, and in any case, there was still a problem in terms of speedy document creation. .

The present invention was developed in view of the above circumstances,
In a word processor equipped with a keyboard for inputting data, a display for displaying input data, a printer for printing data, etc., the specified line editing function for each line is activated, and the corresponding line is immediately edited. It is an object of the present invention to provide a word processor that automatically prints out the contents of a document and displays the following data on a display device.

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

FIG. 1 is a block diagram schematically showing the entire system of a word processor according to the present invention. In the figure, 10 is a keyboard on which character/numeric keys, function keys, etc. are arranged, and the key input information from the keyboard 10 is
The data is taken into the control section 30 through the interface and buffer section 20. The control unit 30 decodes the key input information (code), and if it is a function code, performs corresponding control, and if it is a data code, writes the data code into the memory 40. memory 4
0 has a storage capacity for one print item, for example. Of course, this is just an example, and the memory 40
may have a capacity of several lines of print. In parallel with this key input operation, the control section 30 reads out one line of data from the memory 40, supplies it to the display device 60 having a display surface of one line through the CRT drive and interface section 50, and displays it. I do. 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 detects codes such as carriage return (CR) and line feed (LF) as read data. Or, when the data display position enters the right hand margin (RHM), the data for one line is output to the printer 80 through the printer interface section 70, and at the same time a print start signal is issued, automatically Prints one line of data. The memory 40 is connected to the floppy disk device 10 through a floppy disk interface 90.
For example, when tabulation for several lines to one page is completed, the memory 40 is connected to
The contents of are transferred to the floppy disk device 100. In FIG. 1, thick lines indicate data lines, and thin lines indicate control lines.

FIG. 2 is a detailed diagram of the control section 30, and the word processor of the present invention will be explained in more detail hereinafter. In the figure, 40
1 is a memory having a storage capacity of several lines or one page as explained in FIG. 1, and indicates that data is stored in the shaded area. 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 input data is stored, and the Q point is where the end code is stored. Each shows a memory address. 301 is P of the memory 40
Address register indicating point address, 302 is Q
Address register indicating point address, 303 is H
An address register 304 indicating a point address is a working address register during data transfer. A print buffer 305 stores one line of data to be output to the printer 80, and a display buffer 306 stores one line of data to be displayed on the display device 60. 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 group of registers, the bit position of each register is stored in the display buffer 306.
There is a one-to-one correspondence with the character position. In this format register group 307, each of the above positions is designated by setting the corresponding bit to logic "1". 308 is display buffer 306
and an address pointer indicating the working address of the format register group 307.

309 is an LHM address register that stores the address of the left hand margin (LHM); 31
0 when transferring data to the display device 60;
This is a space address register that stores the address on memory 40 of the space code that has entered the hot zone. Reference numeral 311 indicates an RHM address register that stores the address of the right hand margin (RHM). 312 is a data discrimination/determination unit that discriminates the type of data transferred from the memory 40 to the display buffer 306 and outputs various control signals.
It is a control logic circuit. 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, the flip-flop 314 is a hyphen (-) in the hot zone, and 315 is a carrier. Return (CR) and 316 each indicate the presence or absence of line feed (LF). 317 is the cursor
Status flip-flop 318 is a status flip-flop that indicates whether data remaining in memory 40 is transferred to display buffer 306. 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 323 compares the contents of the space address register 310 and a comparison circuit 323 compares the contents of the address pointer 308 and the RHM address register 311.

324 is a hyphen-on detection circuit that detects a hyphen-on 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 an external source. 326 is a print start instruction circuit that detects the CR code and LF code from the output data of the multiplexer 325 and issues a print start signal; similarly, 327 is a print buffer 305
This is a print end instruction circuit that detects the CR code and LF code from the output data and issues a print end signal. 328 is a print buffer 305 according to instructions of a print start signal and a print end signal.
A printer output control circuit that controls data transfer between the printer 80 and the printer 80 is shown. 329 is a code determination control circuit which 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, the initial state is memory 40.
It is assumed that the data is contained in the shaded area.
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. At this time, the contents of the memory 40 after the H point address are stored in the display buffer 306, and the contents are stored in the display device 60 along with each information in the format register group 307.
is captured and displayed on its display screen. FIG. 7A shows an example of a format display, in which 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 stored in the memory 4 designated by the address register 301.
It is written to the P point address of 0. Thereafter, the address register 301 is incremented by 1 by the arithmetic unit 319.

Along with this key input operation, it is necessary to rewrite the display buffer 306. In this case, first, data transfer preparation processing is executed as follows. That is, the address register 30
The H point address of 3 is moved to the working address register 304 and the display buffer 306 is moved to the working address register 304.
The contents of are cleared. At the same time, the contents of the LHM address register 309 become the address pointer 308.
is set to Thereafter, the state of the LF display flip-flop 316 is checked, and if it has been reset, the format register group 307 is checked.
registers 4-7 are cleared and flip-flops 313-318 are reset. On the other hand, LF
When the display flip-flop 316 is set, the address pointer 3 remains under the control of the data discrimination/control logic circuit 312 until "1" is detected in the line tail register 7 of the register group 307.
08 is incremented, the address pointer is aligned by the line feed, and then, as in the case where the LF display flip-flop 316 is reset, registers 4 to 7 of the format register group 307 are cleared, and the flip-flop 31 is cleared.
3 to 318 are reset. This completes the data transfer preparation process, the contents of the address in the memory 40 specified by the working address register 304 are read, and the address pointer 3
The data is written to the display buffer 306 address specified by 08.

From this memory 40 to the display buffer 30
In parallel with the data transfer to 6, the transferred data is discriminated by the data discrimination/control logic circuit 312,
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. For space code,
Only when the hot zone is entered, the state flip-flop 313 is set, and the contents of the working address register 304 at that time are transferred to the space address register 310. Address pointer 308 is +1 regardless of whether it is inside or outside the hot zone.
be done. In the case of a hyphen code, the status flip-flop 314 is set only when the hot zone is entered. As with the space code, the address pointer 308 is incremented by 1 regardless of whether it is inside or outside the hot zone. 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. For line feed code, state flip-flop 31
6 is set, and at the same time, 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. 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 designation register 3 in the format register group 307 using the address pointer 308.
All you have to do is check whether the specified bit is set to "1" or not. The read signal from this hot zone designation register is sent to the data discrimination/control logic circuit 31.
The signal is individually ANDed with the discrimination signal of No. 2, and becomes the set input of state flip-flops 313 and 314, and the data latch signal of space address register 310, respectively. Note that the status flip-flop 317 compares the contents of the address pointer 308 and the RHM address register 311 in a comparison circuit 323, and is set by a match signal from the comparison circuit 323 when the two match.

If 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 incremented by 1 by the arithmetic unit 320, and the contents of the next address in the memory 40 specified by the address register 304 are is read out, and this is the address pointer 30
8 (the pointer has already been updated in the manner shown in FIG. 5).
It is written to address 6. This data transfer is repeated while state flip-flops 314-317 are reset, and display buffer 306
will be rewritten. During this time, the comparison circuit 321
compares address registers 301 and 304, and sends out a match signal if their contents match. 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 the transferred data does not include codes for carriage return, line feed, etc. , even if it contains a hyphen code, it means it is outside the hot zone.

When the state flip-flop 318 is set, the Q point address in the address register 302 is moved to the working address register 304, and
The end code is read from memory 40. This end code is used by the data discrimination/control logic circuit 31.
2 is detected, the operation of transferring data from memory 40 to display buffer 306 is not executed until the next key input is performed. During this time, the contents of the display buffer 306 will continue to be displayed by the display device 60. This is the case when the end code is stored in the memory 40 in advance, but when the end code is not used, the data transfer operation from the memory 40 to the display buffer 306 is stopped due to the setting of the flip-flop 318, and the next to correspond to key inputs. On the other hand, the match signal of the comparison circuit 321 is also given to the cursor register 5 of the format register group 307, and the address pointer 30 at that time is
"1" is set in the bit specified by 8. 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 in the same way as before. The change is performed again and
The rewritten data is displayed on the display device 60.
will be forwarded to and displayed. An example of the display is shown in FIG. 7B.

Thereafter, the data input from the keyboard and the data rewriting operation of the display buffer 306 based on this proceed, and the flip-flop 31
It is assumed that any one of 4 to 317 is set. In this case, the RHM display flip-flop 31
If only 7 is set, it means that the right hand margin has been reached with no spaces in the hot zone, so the operator should be alerted to the hyphenation and the device should be stopped until another keystroke is made. state.
In other cases, the device will switch to print mode and the printing process will be performed automatically as follows.

First, the hyphen display flip-flop 314
The case where is set will be explained. As shown in FIG. 4, the flip-flop 314 is set when one line of key input advances to a hot zone as a specific area and a hyphen is added as a specific code to break the line. In this case, even if the entered data does not reach the right hand margin, the contents of that line will be printed out immediately,
The next line of key input data is displayed on the display device 60. Its operation is as follows. When the set state of the flip-flop 314 is detected, the H point address of the address register 303 is transferred to the working address register 304 again, and the contents of the address of the memory 40 indicated by the address register 304 are passed through the multiplexer 324 and transferred to the print buffer. 305. 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 the working address register 304 are compared with the contents of the address register 301 by a comparison circuit 321, and data transfer to the print buffer 305 is repeated until the two match.

When the address registers 301 and 304 match and the data transfer from the memory 40 to the print buffer 305 is completed, the hyphen on detection circuit 32
4 detects a hyphen code. Also, at this time, flip-flop 314 is in the set state. Therefore, the switching signal D is applied to the multiplexer 325. As a result, multiplexer 3
25 selects a preset carrier turn code (CR code) and prints it to the print buffer 305.
Transfer to. In other words, in the print buffer 305, a CR code is added to one line of data in the memory 40 from point H to point P (point P is a point that moves each time a new key input is given). is stored. Thereafter, the contents of the working address register 304 at that time are transferred to the 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, and as a result, a print start signal is provided from the instruction circuit 326 to the printer output control circuit 328. When the printer output control circuit 328 receives the print start signal, it outputs the output strobe signal to the print buffer 3.
05, the data stored in the print buffer 305 is sequentially read out while checking the ready signal of the printer 80, and is output 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 32
8 stops the output strobe to the print buffer 305, thereby completing data reading from the print buffer 305. During this time, the printer 80
sequentially prints out the data given through the printer output control circuit 328, and when a CR code is detected, carries out a carriage return operation to prepare for the next print line. That is, memory 4
Data from 0 to 1 line is printed in the buffer 305.
After that, under the control of the printer output control circuit 328, a printing operation for one line is performed independently of the display display operation. This is common to all print operations described below.

Next, state flip-flop 315 or 316
The case where 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 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 It is moved to 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 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 state flip-flop 317 is set and 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 data up to the space closest to the right hand margin (RHM) is printed out, and the data after that is newly displayed on the display device. Its operation is as follows. When the set state of status flip-flops 313 and 317 is detected, the contents of address register 303 are transferred to working address register 304, and the contents of the address in memory 40 indicated by address register 304 are transferred to the print buffer as before. Hua 30
Transferred to 5. After that, the working address register 304 is incremented by 1. At this time, as is clear from FIG. 4, the space address register 3
10 is the memory 40 of the space closest to RHM
The address above is stored. When the working address register 304 is incremented by 1, its contents are compared with the contents of the space address register 310 by a comparing circuit 322, and data transfer from the memory 40 to the print buffer 305 is repeated until the two match. address register 30
When 4 and 310 match, a match signal is output from the comparator circuit 322, and data transfer to the space closest to the RHM is completed, but at this time, the multiplexer 325 is switched by the match signal E.
The CR code is added in the same way as when flip-flop 314 was set. and,
The print operation starts when this CR code is detected by the print start circuit 326. On the other hand, working address register 304
is incremented by 1 by the arithmetic unit 320, 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 data is transferred to the display buffer 306.
6 will be rewritten.

FIG. 6 shows a specific configuration example of the data discrimination/control logic circuit 312. This data discrimination/
The control logic circuit 312 directly transfers the data read from the memory 40 to the display buffer 306.
function to transfer data, function to determine transferred data,
It has a function of advancing the address pointer 308 based on the determination result. block 601
is a section that outputs the input data from the memory 40 as it is to the display buffer 306 and at the same time discriminates the data, and is composed of a so-called decoder matrix. This decoder matrix 60
The space (SP), hyphen (-), carriage return (CR), and line feed (LF) discrimination outputs detected in step 1 become set inputs to the status 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 the address pointer 30 in FIG.
8 and the decoder matrix 60
When a character, number, or symbol is detected at 1, the address pointer 308 is incremented by +1, and when a back space (BSP) is detected, it is incremented by -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 308 continues to increment. 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, thereby sending out a 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 state flip-flop 316 is set, format register group 307
The address pointer 308 is incremented by the clock pulse generator 603 and the ±1 circuit 604 until "1" is sent out from the line tail register 7, and when "1" is sent out, the increment is stopped. That is, this is the process of positioning the address pointer 308 using the line feed described above. When a carriage return (CR), line feed (LF), half line feed (HLF), half reverse line feed (HRLF), margin release, or end code is detected in the decoder matrix 601, ±1 circuit 604 is detected. Prohibit operation. This is easily understood from the table in FIG.

Note that FIGS. 2 and 6 actually constitute a part of, for example, a microcomputer, 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 present invention, in response to a specific code such as a hyphen being input into a specific area such as a hot zone, data in that line is automatically printed out. Since the next line of input data can be displayed on the display, documents can be created more quickly than with conventional devices of this type.

[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, and FIG. 3 is a flowchart for explaining the operation of FIG. 2. Chart, Figures 4 and 5 are functional explanatory diagrams of the data discrimination/control logic circuit in Figure 2, Figure 6 is a specific configuration example of the data discrimination/control logic circuit, and Figure 7 is a display example of a display device. FIG. DESCRIPTION OF SYMBOLS 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 to 318 ... Status flip-flop,
319, 320... Arithmetic unit, 321-323...
Comparison circuit, 324...Hyphen on detection circuit, 32
5... Multiplexer, 326... Print start instruction circuit, 327... Print end instruction circuit, 3
28... Printer output control circuit, 329... Input code determination control circuit.

Claims (1)

[Claims] 1. In a word processor that has a keyboard for inputting data, a display means for displaying the input data, and a printer for printing the input data, data to be displayed on the display means is stored. a display buffer for storing data to be printed by a printer, and a print buffer for storing data to be printed by a printer.
Even if the input data does not reach the right hand margin, print start is used to instruct the start of printing of data in that line in response to a specific code being input in a specific area before the right hand margin. an instruction means, and according to an instruction from the print start instruction means, the printer prints out the data of the line, and the display means can display the data of the next line. .