JPS5975333A - Input device - Google Patents

Abstract

PURPOSE:To lighten an operation burden of an operator and also to input a character which does not exist on a keyboard by displaying in advance on a display part a character which cannot be inputted from a body part, and inputting it from an auxiliary part, in accordance with a shift state of the body part. CONSTITUTION:For instance, in case when an arithmetic equation (a+b)<1.01>X5= X is inputted, first of all, a PF1 key for designating an input start of the arithmetic equation is inputted from a body part 1a. A processing device 4 releases a shift, detects an operator, the sign of equality and a character of a parenthesis from a font memory 3, and displays them on a display device in accordance with arrangement of a ten key 1b. Subsequently, ''1'', namely '' ('' is inputted from the ten-key 1b), and thereafter, in the same way, an operator +, **, X, =, etc. are inputted from the ten-key 1b, and variables (a), (b) and X, and a constant 1.01 and 5 are inputted from the body part 1a. During this time, the shift operation is not required. A calculating equation input end key is a reset key. The input result is displayed on the display device 2.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a formula input device using a keyboard.

[Prior art]

Conventionally, with keyboards (hereinafter simply referred to as keyboards) similar to the keyboard layout specified in J.E.S. There were disadvantages in that there were no symbols for inputting expressions (for example, 6×'' and 6÷'' in arithmetic expressions, and 11'' in relational expressions).

[Purpose of the invention]

An object of the present invention is to reduce the operational burden on the operator by utilizing keys on both the main body and the auxiliary parts in a keyboard that has an auxiliary part such as a numeric keypad and function keys in addition to the main body, and The purpose is to expand the range of expressions that can be entered by making it possible to enter characters that do not exist.

[Summary of the invention]

The present invention fixes the shift state of the main body according to the specification of the type of expression (arithmetic expression, relational expression, logical expression, etc.), and at the same time fixes the shift state of the main body according to the specification of the type of expression (arithmetic expression, relational expression, logical expression, etc.). By displaying characters on the display device in one-to-one correspondence with the keys on the auxiliary part, all characters can be entered with one touch using the keys on the main body and auxiliary part. Features.

[Embodiments of the invention]

Examples of the present invention will be described. FIG. 1 is a block diagram of the device. 1 is a keyboard, 2 is a display device, 3 is a font memory, and 4 is a processing device. FIG. 2 shows the specific layout of the keyboard 1, with a main body portion 1a and a auxiliary portion 1b serving as a numeric keypad. rAJ ~ “F” outside the key
In the English text, the numbers [00J, l'-01J...... indicate the address of the key, for example, the address of the left-handed parenthesis "(" is E08'''. The normal character keys of the main body part 1a are: When the Shift key is not pressed, the character at the center left of the key is input, and when the Shift key is pressed, the character at the top center of the key is input.

Uppercase letters are input when shifted, and lowercase letters are input when unshifted. rP F I J ~ "The PF3J key is a key that specifies the type of expression to start inputting,"
PFl'' is an arithmetic expression, rPF2J is a relational expression, 1'-PF3
Let J specify the input of a logical expression.

Character types that can be used are numbers 0'' to ``9'' as constants, comma ``t'', and period ``.''.

Lowercase letters and numbers as variables, square brackets “[]” as parentheses
and curly braces 6()” and parentheses “)” and equal sign “=”,
As an operator, it is 6+ in arithmetic expressions.

−9×, ÷” and exponentiation −US/US”, in the relational expressions, equal” = “2 not equal” ~”, less than “9”, “9 equal or smaller ≦”, greater than”>”9 equal? Big ``≧'', negation in logical expressions ``]'', logical product ``△'',
The logical sum is 6'', the implication is ``fu'', and the equivalence is 6 mi''.

Consider the case where the arithmetic expression % expression %(1) is input. First, from the main unit 1a, the user inputs the rPFIJ key, which specifies the start of inputting an arithmetic expression. r
Upon receiving the input signal of the PFIJ key (address F'01), the processing device 4 puts the main unit 1a into a shift release state, and selects a character font for operators, equal signs, and parentheses among the character types necessary to input an arithmetic expression. is searched from the font memory 3 and displayed on the display device 2 in accordance with the arrangement of the numeric keypad 1b.

FIG. 3(a) is an example of character type display for inputting an arithmetic expression. In the arithmetic expression (1), first input ``1'' (address C14) on the numeric keypad to input ``(''. The processing device 4 that receives the input signal at address C14 displays ``('' on the display device 2). .Similarly from 1+a” to N x
The characters up to `` are entered sequentially from the left, but the operators ``10'', 1 US, ``x'' and the equal sign ``=" are input from the numeric keypad 1b, and the variables ``a", 6b, and X'' and constants 71.01'' and 5'' are input from the main body 1a. In this process, for example, minus "-" (address E1
1) can also be input from the main unit 1a.

There is no need to perform a shift operation during this time. The return/revise key (address D13) is used as the input end key for the calculation formula. A display example of the input results is shown in FIG. The part (d) is the character area corresponding to the auxiliary part 1b! Part D and (e) are the display positions of the input formulas.

Relational expressions and logical expressions can also be input using the rPF2J key (address F02) and rPF3J key (address F03), respectively.
It is possible to input expressions using the input start key. however,
In the case of inputting a relational expression, an auxiliary part 1b as shown in FIG. 3(b) is used.
Operators and parentheses corresponding to the numeric keys are displayed, and when inputting a logical formula, operators and parentheses are displayed as shown in FIG. 3(C).

Arithmetic expressions, relational expressions, and logical expressions do not necessarily have to be entered independently; inequalities can be created by combining arithmetic expressions and relational expressions.
There are combinations of relational expressions and logical expressions, such as 0). When combining such different types of formulas, simply rPFIJ~rP
By inputting the F3J key, the processing device 4 changes the displayed characters corresponding to the auxiliary section 1b displayed on the display device 2, thereby allowing the operator to easily input the formula.

An example flowchart of the above embodiment is shown in Fig. 5(a)(b)(
C), and FIG. 6 shows an example of a table configuration for realizing the flowchart. Reference numbers O1 to 21 in FIG.
．． 12.1 to 12.7.19.1 to 19.3 are processing block numbers, and reference numerals 22 to 28 in FIG. 6 indicate route numbers along which the program traces information. Figure 5(a)
is the overall flowchart. Block 01 is initial value setting.

The address on the display device 2 for displaying the formula is set in posMu:t, A-ADDR. FORMULA indicates the type of formula to be input; the value "1" is an arithmetic formula, the value '2' is a relational formula,
``3'' indicates a logical formula. 5HIFT is an area for instructing the shift state of the main body portion 1a, and 1 and ``o'' instruct the non-shift state.Block 02 is an input from the keyboard 1. This takes in the address of the input key.Block 03 is the process of converting the input key address into a character code.T1 in FIG. 6 is a table for converting the input key address into a character code; sb,
T1□ is an input key address, T121 Tls is a character code corresponding to the input key address, T12 is a character code in a non-shift state, and Tls is a character code in a shift state. The character code is (IB)1 for the shift key.
g. The recovery key is (OD>16, rPFIJ key to rP
F3J key is (90) ta to (92) 1g, other characters on keyboard 1 are (20) 16 to (7F) t
It is coded as a. Block 03 is Tl
1 and sets the non-shifted character code corresponding to the input key in the MOJ i area. Block 04
determines whether the input key is a PF key or not. If the content of the MOJi area is larger than (90)1g or (90)ts, the process advances to block 05. Block O'51, MOJ
It is determined which PF' key the content of the i-area corresponds to.

If the MOJ i area is (90) 1g, enter the arithmetic expression, so enter the contents of the FORMULA area! '1'' block 10), set the address indicated by the first record of table T2 in Figure 6 in the DSP-ADDR area (block 11, route 22).Similarly, the MOJ + area is set to (
91) If it is 16, set the FORMULA area to 2'', block 08), and set the address indicated by the second record of table T2 in the DSP-ADDR area (block 09, route 23).

If MOJi area is (92) 1g, F'ORMUL
Set the A area to 3" (block 06), and set the address indicated by the third record of table T3 in the DSP! ADDR area (block 07, route 24). Block 12 is the character area corresponding to the auxiliary part 1b when the PF key is manually operated. (Fig. 4(d)).
This is shown in Figure (b). Block 12.1 in FIG. 5(13) is the initial setting of the address on the display device 2 for displaying the characters input by the auxiliary section 1b. Block 12.2 is D
Table T3 set in SP-ADDR area
This is the process of acquiring the character code on table T3 from the address above (route 25). Block 12.3 is a process for finding the address where the character font to be displayed is stored. Let us take as an example the case where "10"' (character code 2B) 1o) is displayed. Font memory 3 is character code)” (
20) This is a table in which fonts from ta to (8F) to are stored in ascending order of character codes without any breaks in character codes. (Here, (80316 to (8F) to is assigned the code of a character that is not on the keyboard.) Therefore, the font address of 1g is stored in the 11th position, assuming the beginning is 0. (2B) 1g
(20ha = (OB)ts). Therefore, the content indicated by the address obtained by adding the first address of font memory 3 to the calculation result of 11 x (font memory code length) is the font address of 6+'' (route 26).Block 12.
4 is the actual display processing on the display device 2. block 1
Steps 2 and 5 determine whether 12 characters have been displayed in the character area (d) corresponding to the auxiliary portion 1b, and if the display is completed, jump to block 02. Blocks 12.6 and 12.7 are address update processing for continuing display. The display follows the order of table T3 and presses "
B -r8J-r9J -r4J -r5J -r6J
-rlJ-r2J -r3J-To-r, J-r, and J are displayed in the order corresponding to each other. Block 13 in FIG. 5(a) checks whether the PF key has already been input when there is a key other than the PF key. Blocks 14, 15, 18, and 20 are character code determinations.

(30) If ts≦character code≦39 and the last two digits of the address of the input key≧14 (determined in block 16), the input is from the auxiliary unit 1b, so the process in block 17 is performed. For example, if you input "x", the processing device 4 will receive the input with the character code (34) 1g of 4", but since the last two digits of the input address are 14", it will not be input from the auxiliary part 1b. Then, extract the character code (81) ill of the character "x" at the position corresponding to "4" in the table configuration example, and
Ji area, and the expression is displayed in block 19 (route 27). Details of block 19 are shown in FIG. 5(C).

Due to the processing of blocks 19.1 to 19.3, FIG.
) is used to display characters in sequence at the positions. If the input is a lowercase English letter (determined in block 18), font memory 3 is searched directly from the character code obtained from table T1,
It is possible to display the formula. Route 28 is an example in which "a" is displayed. If the input is a return key, the process ends.

Block 21 alerts the operator by sounding a buzzer or the like in the event of an input error, and waits for the next input.

Various cases can be envisaged for changing the character box used, but the change can be handled by changing the program on the processing device 4. For example, when the alphabetic characters used in variables change from lower case letters to upper case letters, the state of the main body 1a at the time of starting input of various expressions is initially set to the shift lock state. In this case, if it is an arithmetic expression, "=", +"6C", "
)” can be input from the main unit 1a without inputting it from the keys on the auxiliary unit 1b.
Since input can be made without changing the shift state, the characters displayed on the display device 2 corresponding to the auxiliary section 1b ((
a)) can be excluded. For example, when using -"OR" as a substitute for the symbol for the logical sum "" in a logical formula, change the display character of the processing unit 4 from "" to "OR" and press the numeric keypad 9 (address E16). O when is input
R'' is displayed at the display position of the input formula (FIG. 4(d)).

As described above, according to the present invention, characters that cannot be entered from the main body are displayed in advance on the display section according to the shift state of the main body so that they can be entered from the auxiliary section, which has the effect of simplifying the input operation. be.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an apparatus for carrying out the present invention.
l is the keyboard, 2 is the display device, 3 is the 7-ont memory,
4 is a processing device. Figure 2 shows a specific example of the layout of keys on the keyboard 1, where sb and ia are on the main body, 1b is on the auxiliary part, and A is on the main body.
OO, BOI~B16゜COI~C12, CI4~C1
6, DOI~DO6゜EOI~E16. F'01~F'
03 indicates an address for specifying each key. FIG. 3 shows an example of a screen display of input characters expressed by the auxiliary part 1b that changes depending on the type of expression. This is an example. Figure 4 is similar to Figure 3 (
F) and (d) are examples of inputting arithmetic expressions based on the assumption that
This is the actual display in Figure (a), and (e) is the formula display column. 5(a), (b), and (c) are 70-charts for realizing the embodiment, reference numbers 01 to 21.12.
1 to 12.7 and 19.1 to 19.3 are block numbers of the 70-chart. FIG. 6 shows an example of a table configuration for realizing the flowchart, p, Tt. T2 and Ta are independent tables, and Tl
1l T12+ 'I'13 is an element of table TI,
Reference numerals 22 to 28 are routes for tracing information between tables.

Claims (1)

[Claims] 1. A keyboard that includes a main unit that has keys corresponding to the characters to be input and keys that set the shift state, and an auxiliary unit that has a numeric keypad, and that searches for the corresponding character pattern from the font memory in response to input from the keyboard. In an input device equipped with a processing device for displaying information on a display device,
The processing device includes means for displaying predetermined inputtable characters that do not exist on the keys of the main body at a predetermined display position in correspondence with the numeric keypad arrangement when the keyboard is set to a predetermined shift state; An input device characterized in that in a shift state, corresponding characters displayed in advance on the display device are input by operating a numeric keypad.