JPS62256120A - Key-in controller - Google Patents

Abstract

PURPOSE:To improve operability by providing a code output means outputting a corresponding escape sequence by depressing an escape key and a code conversion means converting the escape sequence of the escape key into an escape code. CONSTITUTION:The titled controller can improve the operability of key-in in such a way that a key-in controller equipped with the escape key and a programmable function key handles the escape key by means of the escape sequence just like the programmable function key. Namely, if the code output means 20 depressed the escape key ESC, the escape sequence corresponding to the escape key is outputted, and the code conversion means 21 converts the escape sequence of the escape key, which is outputted from the code output means, into the escape code. Thus the escape key and the programmable function key have no limit in terms of operability, whereby the burden imposed on an operator can be lightened and the operability can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a key input control device, and particularly to a key input control device equipped with an escape key and a programmable function key.

[Summary of the invention]

The present invention is a key input control device equipped with an escape key and a programmable function key, in which the operability of key input is improved by handling the escape key in an escape sequence in the same way as the programmable function key.

[Conventional technology]

FIG. 5 shows a key input control device with an escape key and programmable function keys.

In FIG. 5, the keyboard l has an escape key ES.
C and other code output keys A, B, . . . Z, and a function key PF.
I, PF2. - It consists of a function key section 13 with PFn, ie, an escape sequence output section. When a key is pressed on the code output key part 12 or the function key part 13 of the keyboard 1, the code output circuit 2 refers to the function key table 3 or the key code table 4 to output the pressed key to a predetermined value. It is converted into a code, ie, an escape sequence or a key code, and stored in the key buffer 5. The input control circuit 8 reads the key code or escape sequence stored in the key buffer 5 by the code output circuit 2 character by character from the key buffer 5 and stores it in the code buffer 6. Next, the input control circuit 8 sequentially stores the key codes or escape sequences in the code buffer 6 in the string buffer 7 and compares them with the escape sequences registered in the escape sequence conversion table 9. When the escape sequence conversion table 9 is searched and a corresponding escape sequence is detected, a conversion code corresponding to the escape sequence is output to the processor 14 as a conversion code output. Note that when the corresponding escape sequence is not detected as a result of searching the escape sequence conversion table 9, that is, when the code stored in the string buffer is a key code, the code stored in the code buffer 6 is not changed. It is output to the processor 14 without conversion.

By the way, in such a key input control device, conventionally, the code output circuit 2 searches the key code table 4 when any code output key of the code output key portion 12 of the keyboard 1 is pressed. Convert the key code to the specified key code, and also convert the function key part 1 of the keyboard 1 to the specified key code.
When any of the programmable function keys 3 is pressed, the function key table 3 is searched and converted into a predetermined escape sequence. For this purpose, the escape key ESC1 of the code output key part 12 and the other code output keys A, B,
...Z is registered in the key code table 4-1 as shown in FIG. 6(b), and the escape key ESC is made to correspond to the escape code 'IBg (hexadecimal), and other code output keys A, B, ...Code Z '41q,'
42', ...15A'. Also,
The programmable function keys PFI, PF2, ... PFn of the function key part 13 are shown in FIG.
), these programmable function keys PF are registered in the function key table 3-1 as shown in FIG.
I, PF2. ... PFn as escape sequences 'IB (01/~)', 'IB
(02/~) 9....' IB (10/~) 9
It was made to correspond to

In this way, when only programmable function keys are handled as escape sequences, the escape sequence conversion table 9 is used to convert the code of the escape sequence and output it to the processor 14.
-1 contains the escape sequences registered in the function key table of FIG. 6(a), i.e., 718[01/~00)','I
B CO2/~00)', ...' 1B (10
/~00)" (Note that OO is an identification character for displaying the end of the escape sequence) conversion codes '101 g, '102 v.

Only 'IOA' is registered, so the processor 14 has programmable function keys PF1, PF2 .
...The code was converted and outputted only when one of PFn was pressed.

[Problem that the invention seeks to solve]

However, in the above conventional device, the escape code JB9 when the escape key ESC of the code output key section 12 is pressed, and the programmable function keys PFI, PF2 .・
- Since the first code 91B' of the escape sequence when either of It is not possible to determine whether this is an escape code caused by pressing , or the first code of an escape sequence of a programmable function key.

For this reason, in the past, in order to identify whether the escape key ESC was pressed or the programmable function key was pressed, the following restrictions were added to the operation.

(1) During operation, escape key ESC and programmable function keys PFI, PF2゜...P
Do not use Fn at the same time.

(2) Escape key ESC processing is performed by the next pressed and input key.

(In the case of 31(2), no processing is performed when only the escape key ESC is input, so the time is monitored after the escape key ESC is input, and it is determined that the escape key ESC is activated after a predetermined period of time has elapsed.

By processing (1), (21, or (3)), it is true that the escape key ESC is pressed and the programmable function keys PF1.PF2....PFn
However, in the +1) or (2) processes, certain restrictions are imposed on key operations, which significantly impairs operability. Also(
In the process of 3), if the fire key is not input after a predetermined period of time after inputting the escape key ESC, there is a risk that it will be mistaken as a programmable function key, and the process of reading each character of the escape sequence depending on the processor load etc. There was a problem that if it took a long time to process the key, it would not be processed as a programmable function key.

SUMMARY OF THE INVENTION An object of the present invention is to provide a key input control device that has no operational restrictions on escape keys and programmable function keys, reduces the burden on the operator, and improves operability.

[Means for solving problems]

FIG. 1 is a block diagram of the present invention. In the same figure, 2
0 is a code output means for outputting an escape sequence corresponding to the escape key ESC registered in the function key table when the escape key ESC is pressed; 21 is an escape sequence output from the code output means 20; For example, - store characters one by one in a code buffer, then transfer them from the code buffer to a string buffer, and compare the contents transferred to the string buffer with the contents of the escape sequence registered in the escape sequence conversion table to find a match. In this case, it is a code conversion means that reads a conversion code from the conversion table and converts it into an escape code.

[For production]

To explain the operation of the present invention, the code output means 20
When the escape key ESC is pressed, an escape sequence corresponding to the escape key is output, and the code conversion means 21 converts the escape sequence of the escape key output from the code output means into an escape code.

〔Example〕

(1) Configuration The key input control device of the present invention has a system configuration as shown in FIG.

In the device configured as shown in FIG. 2, the keyboard 1, code output circuit 2, key buffer 5, code buffer 6, string buffer 7, input control circuit 8, escape sequence conversion table 9, and processor 14 are the same as in the conventional device. Since the configuration is already explained, the explanation of these items will be omitted.

As can be seen from FIG. 2, the device of the present invention is equipped with a function key table 3-2, a key code table 4-2, and an escape sequence conversion table 9-2, which are different from the conventional configuration. Some of the 12 escape keys ESC are registered in the function key table 3-2 instead of the key code table 4-2, and are treated as escape sequences. This allows the escape key ESC in the code output key section 12 to be changed to the programmable function keys PFI, PF2 . ...Treat it the same as PFn, and use the escape key ESC as an escape sequence.”
The programmable function keys PFI, PF2゜...PFn are made to correspond to IB (36/~) 9, and the escape sequence "'" 18 (01/~)
', 'IB (02/~) 7....91B
[10/~] Escape key ESC escape sequence and programmable function keys PFI, PF2. ...is distinguished from the PFn escape sequence. In addition, the key code table 4-2 also includes the escape key E in part 12 of the code output keys.
Only code output keys A, B, ...Z other than SC are registered, and have JIS codes '41' and '42, respectively.
', ...95^ 9 (hexadecimal) is associated.

By setting the function key table and key code table to the function key table 3-2 and key code table 4-2 shown in FIG. 2, when the escape key ESC is pressed from the keyboard 1, the code output circuit 2 Search the key table 3-2 and write the escape sequence 'IB (
36/~] 1 is stored. Further, when a programmable function key such as PFI is pressed on the keyboard 1, the code output circuit 2 searches the function key table 3-2 and stores the escape sequence vIB (01/~)7 in the key buffer 5 as in the conventional case.

In addition, as shown in FIG. 2, the escape sequence conversion table 9-2 includes the function key table 3-2.
Programmable function key PF corresponding to 2
I, PF2. ...PFlo escape sequence 'IB (01/~00)'.

' IB (02/~001', ...' IB
(10/~00] 1 is address CNVP+ES, CN
VP+2XES.

...Registered from the position of CNVP+10xES, and the conversion codes '101' and '102' are added to these, respectively.
'.

...'IOA' is associated. In addition, these programmable function keys PF1 and PF2
．． ...Escape key ES along with PFIO
C escape sequence' IB (36/~00)
7 is registered from the position of address CNVP, and a conversion code 'OIB' is associated with this. Here, C.N.
VP is the start address of the escape sequence conversion table 9-2, and ES represents the size of one escape sequence and conversion code registered in the conversion table 9-2.

By changing the escape sequence conversion table 9 to the escape sequence conversion table 9-2 shown in FIG.
~] If 1 is stored, convert it to conversion table 9
-2, converts it to the escape code 'OIB' and outputs it to the processor 14, and if the key buffer 5 stores a programmable function key, for example, PFI escape sequence 91B (01/~) 9. , it is possible to search the conversion table 9-2 in the same way as in the past, convert it into a predetermined conversion code 01019, and output it to the processor 14.

In FIG. 2, the key buffer 5 is large enough to store an escape sequence, the code buffer 6 is large enough to store a code for one character, and the string buffer 7 is large enough to store an escape sequence. The letter ' o to identify the end of
It must be large enough to store oq. The input control circuit 8 also includes a table pointer 10 and a table counter 11 used when performing conversion processing.

Further, in FIG. 2, the code output circuit 2, the function table 3-2, the key code table 4-2, and the key buffer 5 constitute the code output means 20 of FIG. Control circuit 8 and escape sequence conversion table 9-2
constitutes the code conversion means 21 in FIG.

(2) Operation In the key input control device configured as described above, the operation of the device of the present invention will be explained with reference to FIGS. 3 and 4.

FIG. 3 is a schematic diagram of the operation when the escape key ESC of the keyboard 1 is pressed.

In FIG. 3, when the escape key ESC is pressed from the keyboard 1 (FLl), the code output circuit 2 searches the function key table 3-2 and outputs the escape sequence 'IB (
36/~] Store 9 in key buffer 5 (FL2)
. Next, the input control circuit 8 reads the escape sequence 'IB (36/~)9' first character 'IB g stored in the key buffer 5 from the key buffer 5 and stores it in the code buffer 6 (FL3), and then reads this code. Transfer 'IB' to string buffer 7 (FL
4). It is assumed that the string buffer 7 is completely cleared ('00' is stored) before this process is started. Is the code transferred to string buffer 7 918? When the input control circuit 8 determines that the code stored in the key buffer 5 is an escape sequence, the input control circuit 8 converts this escape sequence into any of the escape sequences registered in the escape sequence conversion table 9-2. Starts the process of determining whether it matches.

The input control circuit 8 reads out the next character 9 stored in the key buffer 5 and stores it in the code buffer 6.
), this is stored in the string buffer as "18 (') following the first character q1af (FL5), and is partially compared with the escape sequence registered in the escape sequence conversion table 9-2 (FLIO). As a result of the comparison, if they match, read the next character "39" from the key buffer 5 and store it in the code buffer 6.
L3), this is further stored in front of the string buffer as the code 'IB('', followed by 'IB(3') (FL6), and this is registered in the escape sequence conversion table 9-2. Compare with the escape sequence (FLIO). If the comparison results do not match, compare with the next escape sequence registered in the escape sequence conversion table 9-2. In this way, the input control circuit 8 The escape sequence stored in buffer 5 is written one character at a time (hereinafter referred to as v6w).

? /9%~W) Read (FL3), store this in string buffer 7 sequentially (FL7.FL8, FL9)
, sequentially compared with the escape sequences registered in the escape sequence conversion table 9-2 (FLIO)
, the input control circuit 8 reads g to 9 from the key buffer 5, stores them in the code buffer 6 (FL3), stores them in the string buffer 7 (FL9), and stores them in the string buffer 7.
When the content of ' IB (36/~) becomes 9, (
Since string buffer 7 is cleared before processing starts, 'IB' (9007 is stored next to 36/~7), and this escape sequence is registered in the escape sequence conversion table, so input control The circuit 8 outputs the conversion code "OIB" corresponding to this escape sequence to the processor 14 (FLII
).

In this way, by treating the escape key ESC as an escape sequence, the escape key ES
C and programmable function key PF1. PF2
．．・・・・Without any restrictions on operations with PFn,
These keys can be used at the same time, and when the escape key ESC is pressed, processor 1
The escape code "01B" can be output as a conversion code to the processor 14, and when the programmable function keys PFI, PF2, .
', '102', ...'IOA' can be output.

Next, the conversion process of the input control circuit 8 will be explained in more detail using the flowchart of FIG.

First, the first character of the escape sequence or key code stored in the key buffer 5 is read and stored in the code buffer 6 (STI).

Next, in order to determine whether processing has started or is in progress, it is determined whether the beginning of string buffer 7 is w009 (Sr1). If the beginning of string buffer 7 is 9009, Since this is the start of the process, in order to determine whether the content to be processed now is an escape sequence or a key code, it is determined whether the content of the code buffer 6 is the escape code 91B7 (Sr3). If the contents of code buffer 6 are not escape code 91B1, it is a key code, so output the contents of code buffer 6 to processor 14 without any conversion (5T4), then clear string buffer 7 and press next. Return to STI again to prepare for the keys from keyboard 1 that will be sent.

The contents of code buffer 6 is the escape code value 'IB'
If so, the parameters are initialized to start the conversion process. That is, the start address value 5TRP of the string buffer is stored in an address register (not shown), and the start address value CNVP of the escape sequence conversion table 9-2 is stored in the table pointer 10 as shown in FIG. The initial value WQf is stored in the count value N of the counter 11 (Sr5). In the following, first, the escape key ESC is pressed from keyboard 1, and the escape sequence 'IB' is stored in key buffer 5.
(36/~) The following description assumes that 9 is stored.

After initial setting with Sr5, start address value 5TRP of string buffer 7 stored in address register
The contents of the code bus buffer 6 are stored in the address position 5TRP+N of the string buffer 7, which is obtained by adding the count value N of the table counter 11 to the address position 5TRP+N+1 of the string buffer 7. Identification character 9-1 indicating that is the current last one
g (Sr1).

In this case, the count value N of the table counter 11 is w
Ov, and the content of the code buffer 6 is the escape code 'IB', so the escape code 91B9 is stored in the first address position 5TRP of the string buffer 7, and the following address position zs'rRp+i is stored with the escape code 91B9.
-19 will be stored.

Next, in order to check whether the content stored in the string buffer 7 and the content of the escape sequence registered in the escape sequence conversion table 9-2 match, the address position WSTR of the string buffer 7 is
The content stored in P+H is compared with the content stored in address position CNVP+H of conversion table 9-2 (Sr7).

In this case, what is the count value N of table counter 11?
□W, 11B9 is stored in the start address position 5TRP of the string buffer 7, and the conversion table 9-2
Since '1B' is also stored in the first address position CNVP, the comparison results show that the contents match, and the process proceeds to Sr8.

In Sr8, in order to check the contents of the next address position of the string buffer and the contents of the next address position of the conversion table 9-2, the count value N of the table counter 11 is incremented by 1+1v (S78), and Sr9 Proceed to.

Sr9 checks whether 9009 is stored in the address position CNVP+N of the escape sequence conversion table 9-2 in order to check whether the search has reached the last position of the escape sequence registered in the conversion table 9-2. Check (Sr9) If 9009 is stored, proceed to 5TIO to end the conversion process and output the conversion code to the processor 14; if 9009 is not stored, proceed to 5T13 to proceed with further processing.
Proceed to.

In this case, the count value N of the table counter 11 is W
19, escape sequence conversion table 9-2
Since 9 [7 is stored in the address position 1cNVP+1, the process advances to 5T13.

In 5T13, address position 1s of string buffer 7
Check whether the content of TRP+N is 1-IW, and 9-
When 1g, key buffer 5 to code buffer 6
Returns to STL again to store the next character. The contents of address position l5TRP+H of string buffer 7 are 9-
19 occurs because, as described later, the escape sequence in the conversion table 9-2 currently being searched does not match the escape sequence in the string buffer. This occurs during the process of searching for escape sequences. Therefore, if it is not 7-19, Sr1
Returning again to Sr1.5T12, Sr8. The process of Sr9 is repeated until the content of 5TRP+N becomes 1-17. In this case, the contents of address position ff5TRP+1 of string buffer 7 are 9-19, so S
Return to T.I.

In STI, character 1 in key buffer 5 following 91B9
[Set 9 in code buffer 6. The first address l5TRP of string buffer 7 contains 91 in the previous process.
Since 87 is stored, it is not "oo", and therefore Sr2 judges that it is not the start of processing, and proceeds directly to ST6 without going through the initial setting routine of Sr5.After ST6, the process is the same as the previous processing. The process is repeated.' That is, the address position 5TRP+N of string buffer 7, in this case 5TRP+1, and the content 7 of code buffer 6 are repeated.
[Stores 9 and moves to the next address location 5TRP+N+1 of string buffer 7, in this case 5TRP+2,'
- Store IW. As a result, 'IB(-1') is stored in the string buffer.
In Sr1, address position 5T of string buffer 7
The contents stored in RP+N are compared with the contents stored in address position CNVP+H of conversion table 9-2. In this case, 9 [9 is stored in the address position 5TRP+1 of the string buffer 7, and ° [9] is also stored in the address position CNVP+1 of the conversion table 9-2.
Since 9 is stored, the comparison results in a match and the process proceeds to Sr8. In Sr8, the count value N of the table counter 11
is incremented by 9+17 to become 929. Then, Sr9
Then, it is determined whether the content stored in the address position CNVP+N of the conversion table 9-2 is 'oo'. In this case, address position ficNVP+2 has 9 [
9 is stored, so instead of 'oo', it is 5T1
Proceed to step 3. At 5T13, it is determined whether or not 7-1g is stored in the address position STRP +N of the string buffer 7. The address location 5TRP+2 is definitely lol
-11 is stored, so return to STI again and repeat the exact same process to find the character stored in key buffer 5? 3? ,? 69. v/w.

5TI to store each character in code buffer 6.
), then each address position 5TRP+2,5TRP+3°5TRP+4,5TR of the string buffer
Store these in P+5 (5T6), address position CNVP+2 of escape sequence conversion table 9-2.
．． CNVP+3, CNVP+4. Comparing with the contents stored in CNVP+5, 5T7) and -G, Sr8. Proceed to Sr9,5T13.

Text now? 31. W 6 Z 9 /? all match, and string buffer 7 in Sr1
The content of address position 1sTRP+5 is 9 to g, and the address position CN of escape sequence conversion table 9-2 is
When the contents of VP+5 match from 7 to w, the count value N of the table counter 11 becomes 969 in ST8, and the escape sequence conversion table 9 is converted in ST9.
Since the content of the address position CNVP+6 of -2 is VOW, this means that the escape sequence stored in the string buffer 7 and the escape sequence registered in the escape sequence conversion table 9-2 match, and the processor 14 Proceed to 5TIO to output the conversion code. 5TIO outputs the code corresponding to the escape sequence, in this case the escape code "OIB", to the processor 14.
In TII, the string buffer 7 is cleared to perform the conversion process '14 (fM) for the next key to be pressed on the keyboard 1, and the process returns to STI again.

Next, processing when a programmable function key such as PFI is pressed on the keyboard l will be described.

When the programmable function key PFI is pressed, the escape sequence ' is stored in the key buffer 5.
IB COI/~] 1 is stored. In ST1,
The first character of this escape sequence is the escape code '1B', and the next character is 9 [9], which are the first two characters of the escape sequence 'IB (36/~) 7 of the escape key ESC. Therefore, the same processing as described above is performed.

In the following, processing from the third character, ie, 707, of the escape sequence 'IB (Of/~) 7 stored in the key buffer 5 will be explained.

In the STI of FIG. 4, the third character of key buffer 5 is 90.
9 is read and stored in the code buffer 6. S
At T2, it is checked whether the beginning of the string buffer 7 is v009, but since the escape code '1B' is already stored at the beginning of the string buffer 7, it is not 'oo' (proceed to ST6. ST6 Now, store the contents of code buffer 6 ``'09'' in the address position 5TRP+2 of the string buffer, and
Set 9-19 to 3.

Next, in ST7, the contents of the address position 5TRP+2 of the string buffer 7 and the contents of the address position CNVP+2 of the escape sequence conversion table 9-2 are compared. Now address position 1 of string buffer 7
Ov is stored in sTRP+2, and conversion table 9-2
937 is stored in the address position CNVP+2 of the conversion table 9-2 (from the first address position of the conversion table 9-2, the escape sequence 'IB (
36/~] 1 is stored. ), so these contents do not match. At this time, the process advances to 5T12 to compare whether or not it matches the next escape sequence registered in the conversion table 9-2. In 5T12,
In order to set the address position WCNVP in conversion table 9-2 to the start address position where the next escape sequence is registered, a new value is added to the current start address position CNVP by the escape sequence and the size ES of the conversion code. Start address position C of conversion table 9-2
It will be NVP. Furthermore, the next escape sequence and string buffer 7 registered in the conversion table 9-2
The count value N of the table counter 11 is compared with the escape sequence stored in the table starting from the first character.
Clear and return to ST7 again.

In ST7, address position 5T of string buffer 7
Contents of RP and address position CNV of conversion table 9-2
Compare the contents of P. In this case, the contents of the address position WST RP of the string buffer 7 and the contents of the address position CNVP of the conversion table 9-2 are both escape code 91B9, so they match, and the contents of these next address positions are compared. Therefore, the count value N of the table counter 11 is incremented by 9+19 (S
T8).

Next, in ST9, the address position W of the conversion table 9-2 is
Check whether the content of CN V p + N is 90″′. In this case, the count value N is 719,
Since the content of the address position CNVP+1 of the conversion table 9-2 is 9 [7, the process proceeds to 5T13 instead of 909. At 5T13, it is checked whether the contents of address position 5TRP+N of string buffer 7 are 9-19. In this case, address position 5 of string buffer 7
Since the content of TRP+1 is 7 [7, the process returns to Sr1 instead of t1w. Next, in Sr1, the contents of the next address position 5TRP+1 of the string buffer 7 and the next address position CNVP+1 of the conversion table 9-2 are stored.
Compare the contents of The contents of address position 5TRP+1 of string buffer 7 are 9 [9, and the contents of address position WCNVP+1 of conversion table 9-2 are also 7 [7].
Therefore, they match, and the process proceeds to Sr1. As above, S
r1. Similar processing is performed on Sr1 and 5T13, and Sr1
Return to again.

Since the count value N of the table counter 11 is now 929 in Sr1, the contents of the address position 1sTRP+2 of the string buffer 7 are compared with the contents of the address position CNVP+2 of the conversion table 9-2 in Sr1. This time, the contents of 5TRP+2 and CNVP+
Since the contents of 2 match v and Ow, proceed to Sr1. In addition, programmable function key PFI
If O is pressed, the content of 5TRP+2 is 71
9, so a comparison must be made with the next escape sequence in conversion table 9-2. In this case, the match is the last escape sequence stored from address position CNVP+10xES in conversion table 9-2, and the above-described process is repeated until this is retrieved.

Now, let me explain again the programmable function key P.
Returning to the case of FI, in Sr1, the count value N is incremented to 939, and in Sr1, it is checked whether the content of the address value CNVP+3 of the conversion table 9-2 is 909 or not. In this case, the contents of CNVP+3 are wlv, so
Proceed to 5T13. In 5T13, string buffer 7
It is checked whether the content of the address value 5TRP+3 is 9-19. In this case, the content of 5TRP+3 is 9-1
9, return to STI again and write the escape sequence "IB[01/~] 9 stored in key buffer 5.
The process of reading 919 of 919 is restarted, and thereafter the escape sequence 91B of the escape key ESC (36/~)
Repeat the same procedure as step 7. When characters g to 9 are processed, the count value N of the table counter 11 becomes v6v in Sr1, and the content of the address position CNVP+6 of the conversion table 9-2 in Sr1 is VOW, so the process advances to 5TIO and the processor 14 escape sequence" IB (01/~) Outputs the code '101' corresponding to 9.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, there is no problem in operation even when the escape key and the programmable function key are used at the same time, and the processing of the escape key ESC can be performed depending on the next key pressed. Even if only the escape key ESC is pressed without processing, it can be distinguished from the case of pressing a programmable function key, and the operator does not need to be aware of any restrictions or cautions regarding the operation of the escape key and programmable function key. It is possible to significantly reduce the burden and improve operability.

[Brief explanation of drawings]

Fig. 1 is a block diagram of the key input control device of the present invention, Fig. 2 is a system configuration diagram of the key input control device of the present invention, and Fig. 3 is a schematic diagram of the operation when the escape key ESC of the keyboard is pressed. , FIG. 4 is a flow chart showing the conversion process of the input control circuit of the present invention. FIG. 5 is a system configuration diagram of a conventional key input control device. It is a configuration diagram of a function key table, a key code table, and an escape sequence conversion table of the key input control device. 20... Code output means, 21... Code conversion means, Patent applicant Casio Computer Co., Ltd. 1 Keyboard □ 3rd ``・Lingebuffer 6th (C) Mouth

Claims (1)

[Claims] 1) Code output means that outputs an escape sequence corresponding to the escape key when the escape key is pressed, and code conversion that converts the escape sequence of the escape key output from the code output means into an escape code. A key input control device comprising: means. 2) The code output means includes a function key table in which escape keys or programmable function keys are associated with respective escape sequences, and a key code table in which code output keys other than the escape key are associated with respective key codes. A key input control device according to claim 1, characterized in that: 3) The code output means includes a code output circuit and a key buffer, and the code output circuit searches the function key table or the key code table for an escape sequence or key code corresponding to the pressed key, and outputs the escape sequence or key code corresponding to the pressed key. 3. The key input control device according to claim 2, wherein a sequence or a key code is stored in the key buffer. 4) The code converting means includes an escape sequence conversion table in which escape sequences of escape keys are made to correspond to escape codes, and key codes of programmable function keys are made to correspond to predetermined codes. The key input control device according to item 2 or 3 of the range. 5) The code conversion means includes an input control circuit, a code buffer, and a string buffer, and the input control circuit reads the escape sequence or key code stored in the key buffer of the code output means one character at a time and converts it into a code. A patent claim characterized in that the escape sequence stored in the code buffer is transferred character by character to the string buffer, a search process is performed using the escape sequence conversion table, and a predetermined conversion code is output. The key input control device according to item 4.