JPH02288909A - Character processing device - Google Patents

Abstract

PURPOSE:To perform the processing in accordance with operator's will by providing a storage means where data of operated keys are successively stored, a processing means which successively processes stored key data, and a control means which rejects the same stored key data. CONSTITUTION:When a key on a keyboard KB is depressed, a keyboard KB input processing routine is started, and input data from the keyboard KB is stored in a buffer KB BUFFER. Data of characters or the like stored in the buffer KB BUFFER is read out by various processing routines requiring input data from the keyboard KB like an input processing routine and an editing processing routine and is used. A rejecting means is provided which selectively rejects inputted data at the time of inputting data from the input means KB. Thus, objective input is accurately performed.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a character processing device that performs electronic processing of character strings.

2. Description of the Related Art Conventionally, there has been a character processing device that stores data input from an input means in a storage means and sequentially retrieves the data from the storage means for processing.

Such a character processing device includes processing means for extracting data stored in the storage means and processing according to the data, and inputting data from the input means into the storage means by interrupt processing for the processing means. It had a storage control means for sequentially storing data, and by buffering the data input from the input means in the storage means, various processes could be executed completely without any omissions.

However, if the data is input quickly (continuously), the speed of internal processing will be slower than the number of interrupts (interrupts), so unprocessed data may not be processed accurately. For example, in a character processing device having a CRT display device, when moving the cursor to a desired position on the CRT screen, if the cursor movement key is held down, the unprocessed data of the cursor movement key is stored in the storage means. When you release the cursor movement key,
There were cases where it became difficult to stop the cursor at the desired position.

SUMMARY OF THE INVENTION An object of the present invention is to provide a character processing device that can terminate processing according to the operator's will when continuously executing various functions provided in the device.

Other objects of the invention will become apparent from the embodiments described below.

FIG. 1 is a block diagram showing an embodiment of a character processing device according to the present invention.

KB is a keyboard consisting of a group of character keys for inputting text and a group of function keys for realizing various functions of this device. When one of the character key group and the function key group is fully pressed, an interactive command is given to the microprocessor CPU, which will be described later, through the control bus CB, which will be described later. In addition, the microprocessor CPU, which will write the code of the key pressed through the encoder provided on the keyboard, is connected to the data bus D, which will be described later.
It can be known through B.

Note that the key code output from the encoder does not directly correspond to a character code, but is a code for identifying each key. Interaction commands applied from the keyboard KB to the microprocessor CPU can be passed back to the microprocessor CPU. However, even if the keyboard KB interwired is masked by the CPU, if the keyboard KB interwired is unmasked by the microprocessor CPU Ic, the KB interwired that occurred when it was masked will not be lost and the KB interwired will operate normally. shall work.

KB BUFFEB is a buffer for converting input data pressed from the keyboard KB into character codes and buffering them.0 When a key on the keyboard KB is pressed, the input data from the keyboard KB is
An input processing routine is activated, and input data from the keyboard KB is stored in the buffer KB BUFFER.

Data such as characters stored in the buffer KB BUFFER is read out and used by various processing routines that require input data from the keyboard KB, such as input processing routines and editing processing routines.

The details of the buffer KB BUFFER are shown in Figure 2. Total 2iW (W: Word, 1.W=16 bits
) has a capacity of A specific definition of each W is shown below.

WORD O: Length of all data stored in KB BUFFER.

WORDs 1-4: Omitted as they are not directly related to the present invention.

WORJ) 5 to 20: Area where data input from KB is stored.

The first 5Ws are filled with the characteristics of the data stored in the buffers KB BUFFEB. Actual input data is stored after the 6th W.

Buffer KB BUFFEB's WO DQ (1st W)
The length of the data stored in the acid buffer KB BUFFER is written in. Data is stored in WORDs 5 to 20 in the order in which it is input, starting from WORD 5, and when processed in each processing routine, the data is processed in order starting from VvO D5 and left-aligned.

The CRT REFRESH MEMORY is a memory, and the codes such as characters stored therein are converted into patterns by the CR, T controller CRT CONT (described later) and displayed on the screen of the display device.

CRT C0NT is memory CRT RFI: Xi'肚8
This is a CRT controller that controls character code information stored in the HM film 0 to be patterned and displayed on the screen of a display device.

CRT is a display device, CRT controller, CRTC
Memo I is controlled by ONT K.
J Displays the character information stored in the CRT EF EF 8H and MO.

R store bar random access memory, used for temporary storage of various data.

T'LOM is a control memory in which control procedures shown in FIGS. 3 to 7 are stored.

The CPU is a microprocessor that performs calculations and logical decisions. Address bus ML data data bus DB described later
, control bus 0BliL, kisser board stealing, buffer KB BUFFER, memory 0
Teacher, Memoi, SHMl, Memo 1. Data can be read and written to IRAM and control memory RCM.

, is an address bus that transfers signals indicating the control target. OB is a control bus that applies control signals to various control objects. The DB transfers various data via a data bus.

Based on the above configuration, the operation of the embodiment according to the present invention will be explained.

When the power is turned on, initialization processing shown in FIG. 3 is first executed. The details of each step in this flow are shown below.

0, I KB INT (abbreviation for INTERRUPT) M
ASK ONo, 2 buffers KB Enter all NULL codes in BUFFER. (Clear all to 0)
0.3 Put all space codes in memory ORT REFRESH MEMORY.

0.4 KB INT MASK 0FF0.
5 To MAIN processing, KB INT MASKO in step O11 as described above.
N L, buffer KB BUF'FI in step 0.2
clear. (Set the person LL O) Next, in step 0.3, set the memory ORT REF ESHM
Insert all space codes in EMORY. In step 0.4, KB INT MASK OFF' L is selected, and in step 0.5, the process proceeds to wind IN processing.

After the above-mentioned initialization process, the MAIN process is executed, but the MAIN process is an infinite loop, and as long as the MA 8K of the interrelated data is not turned on, interrelated data from the keyboard KB is not accepted. MA I N
When an interrupt is received from the keyboard KB during the processing, the KB input processing shown in FIG. 4 is performed.The contents of each step in the flow of the KJ3 input processing (1) shown in FIG. I KB INT MASK ONl, 2 Input data from keyboard KB 1, 3 code conversion processing 1.4 Function cow - code check processing (Is 1.5 tail OK? Rough 1.6 bar 1 a KB BUFFRR, write processing 17
DIsPLAY Processing 1.8 KB INT MARK OFF
In step 1.2, data is input from the keyboard KB. In the next step 1.3, code conversion processing is performed to convert the KB code of the data input from the keyboard KB into an internal code for internal processing, and the code input in step 1.4 is converted into the function key code buffer. Is there any unprocessed data left in KB BUFFER? If the check is OK, proceed to step 1.6; if the check is NO, proceed to step 1.8. In step 1.6, a KB BUFFFiR write process is performed to write the converted internal code into the buffer KB BUFI. KB BU in next step 1.7
Performs DISPLAY processing to display the data in FFER on the display device tC, and displays the data in KB in step 1.8.
Terminate the process by pressing the interactive MASK OFF button.Next, the details of the function key code check process (1) in step 1.4 will be shown together with the flowchart of FIG.

1. 4.1 Is the code of the input data the 7 action key code? 1.4.2 KB BUFFER WORDOi-j:
Is it 0? 1.4.3 KB BUFFEL(, of((WO
Is the content of RDO (contents of O) + 5)th WORD the same as the code of the input data? 14.4 Check NO 1, 4.5 Check OK In step 1.4.1, if the code of the input data is a function key code, step 1.4.5
Otherwise, go to step 1.4.2. In step 1.4.2, the buffer KBBUFFFila
Check the contents of KB BUFFI's WORD(O) to determine whether there is any unprocessed data in KB BUFFI.
'FJ's WORD O If it is O, go to step 1.4.5.
Otherwise, proceed to step 1.4.3. Step 1
．． In 4.3, check the code of the unprocessed data that was input most recently, and compare the code of the newly input data input to the CPU with the contents of the buffer KBB [JFFEFL, and if they are the same, Go to step 1, 4.4 Otherwise go to step 1.4.5.

In step 1.4.4, it is determined that the check is NO and the function key code check process (1) is ended, and in step 15.5, it is determined that the check is OK and the process is ended.

Furthermore, as another example of the KB input process, the following process KB input process (2) is also possible. The processing flow is shown in FIG.

2.1 MASK ON to KB IN 2.2 2 and 3 code conversion processing to input data from KB 2.4 KB BUFFER write processing 2.5 Function key code check processing 2.6
DISPLAY Processing 2.7 KB INT MASK OFF Steps 2.1 to 2.3 are the same as KB Input Processing (1) Steps 1.1 to 1.3, so their explanation will be omitted.

Perform the import process. In step 2.5, KBBUFF
Check the EB and find out that the code of the unprocessed data is KB fUFFER, which is the same as the code of the newly input data.
Inside, an deletes the code of the newly input data.

The next steps 2.6 and 2.7 are omitted because they have no difference from steps 1.7 and 1.8 of the stolen input processing (1).

Next, 2.5 function key coat check processing (
2) will be explained. The flow is shown in FIG.

2.5.1 Is the code of the input data a function key code? 2.5.2 KB BUP'F'FiR's WORD O
Is it 1? 2.5.3 KB BUFFER ((WOR
The contents of the 15th WORD (Contents of DO) and ((W
Contents of ORD 0) + 4) Contents of th WORD have the same power)? 2.5.4 Delete the contents of the ((Contents of WORDo) + 5)th WORD in KB BUFFER.

2.5.5 Decrement the contents of KB BUF'F'FR0WORD O by 1.

In step 2-5.1, if the code of the input data is 71 digits, the process proceeds to step 2.5.2; otherwise, the process ends. In step 2, 5.2, KB
Check whether there is unprocessed data in BUFFEB
BUFFI ￥ Please check the contents of VO 几DO and make a decision.
If there is no unprocessed data remaining in KB BUFFEB, it is only newly input data, so the content of WORD O is 1.) If WORD O of KB BUFFEB is 1, processing is completed. Otherwise, step 2.5. 3
Proceed to. In step 2.5.3, the CPU compares the code of the last input unprocessed data with the code of newly input data, and if they are the same, step 2.6.
If not, the process ends. Step 2.5.4
Now, delete the code of the data entered in the prayer. In step 2.5.5, the contents of WORDO (data length O
Decrement 1 by 0 In this example, the data to be rejected is for function keys, but it can be expanded to include other keys, such as character keys, or for part of function keys. It is also possible to limit As another example, the effect will not change even if the function key code check process performed in step 2.5 of the KB input process is performed in the MAIN process. In this case, the provision of a rejection means for selectively rejecting the input data has the effect that the desired input can be performed accurately.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an example of an actual coffin according to the present invention, and FIG. 2 is a block diagram showing a buffer KB BUFFgR.
) A diagram showing fc, Figure 6 is a diagram showing KB human force processing (2),
Figure 7 shows the function key code check f! l
t2). KB BUFFgR...Buffer E, OM...Control memory CPU...Microprocessor CRT...Display device KB...Keyboard diagram, Figure 5 is a funkyonkey code check.

Claims (1)

[Scope of Claims] Input means having a plurality of keys for inputting data; key data generation means for generating data corresponding to an operated key of the plurality of keys of the input means; and said key. Storage means for sequentially storing the key data generated by the data generation means; Processing means for sequentially processing the key data stored in the storage means; Control means for discarding the same key data stored in the storage means. A character processing device comprising: