JPS61157920A - Electronic equipment - Google Patents

Abstract

PURPOSE:To specify a mode without using plural control keys and to utilize fully a display by displaying contents of a control mode only during the prescribed period when a variety of control modes is specified in combination with a specific key and other keys. CONSTITUTION:In combination with a control key CTRL and a character keys on a keyboard KB, a variety of control modes can be specified. When a mode flag M1 is set to zero, an operation is set to a character by character printing mode. When the flag M1 is set to '1', the operation is set to a word by word printing mode. When a mode flag M2 stands at '0', the operation is set to an underlineless mode, and when the mode flag M2 stands at '1', the operation is set to an underline mode. A paper feed amount at every line is set to the 1st and 2nd space when a mode flag M3 is '0' and '1', respectively. Each mode is displayed on the display device DIS while the key CTRL is depressed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to an electronic device equipped with a keyboard and a display.

More specifically, the present invention provides an electronic device that can execute various control modes by combining a predetermined control key and other keys, and can also display the contents of the corresponding control mode on a display. It is related to.

[Prior art]

2. Description of the Related Art Hitherto, electronic devices including keyboards and displays, such as electronic typewriters, word processors, and calculators, have been known. Taking an electronic typewriter as an example, the keyboard has alphanumeric keys as well as control keys for setting various print modes (for example, underline specification key, paper feed amount specification key). ) are arranged in large numbers, making it difficult to operate.

Moreover, in response to the press of each control key, a dedicated display is separately provided to display the content (control mode), or a part of the display area of the alphanumeric display is sacrificed to indicate that. The current situation is that it is displayed.

〔the purpose〕

In view of the above points, an object of the present invention is to execute various control modes without increasing the number of control keys on a keyboard, and to appropriately display the corresponding control mode by effectively utilizing one display. An object of the present invention is to provide an electronic device configured to do the following.

In order to achieve such an object, the present invention provides an electronic device equipped with a keyboard and a display means, when specifying various control modes by a combination of a specific control key and other keys, The control mode is limited to display control means for displaying the contents of the control mode on the display means.

Preferably, the display control means is configured to display the control mode only while the control key is pressed.

〔Example〕

Hereinafter, the present invention will be described in detail based on Examples.

Fig. 1 is a block diagram showing an embodiment of an electronic typewriter to which the present invention is applied.
jlRN and control key CTRL. This control key CTRL is a special control key for implementing the invention, and its function will be explained in detail later with respect to FIGS. 2 and 3. Further, KBS is a keyboard signal and includes key code information for specifying the pressed key.

MP is a microprocessor equipped with a clock pulse generator, delay circuits, gate circuits, etc., and executes the control procedure described in detail below with respect to FIG.

RA) 1 is a random access memory, which includes a line buffer LB for storing keyed-in contents, a display memory DISPM, a cursor pointer CP, and a mode flag old/M2/M3 area. ing.

The ROM is a read-only memory and stores a group of microinstructions necessary for the microprocessor MP to execute the control procedure shown in FIG. 3, which will be described later.

PRT is a printer that prints the contents of the line buffer 1 (keyed-in alphanumeric characters) on recording paper based on instructions from the microprocessor MP.

Here, CPRT is a print control signal.

DIS is a display device including an alphanumeric display element such as a liquid crystal display element, and visually displays the contents of the display memory old SPH based on instructions from the microprocessor MP. Further, CDl5 is a display control signal.

BUS is a pass line and acts as a data transfer path between the microprocessor MP, RAM, and ROM.

FIG. 2 is a diagram showing an example of key operation in this embodiment and the operating state of each part as each key is pressed. Here, the relationship between the mode flags old, M2, and M3 and the control mode of this embodiment is as shown below.

■When the old mode flag is set to "0", the so-called character printing mode (hereinafter referred to as
CP mode).

When the mode flag M1 is set to rlJ, the so-called word φ-by-word printing mode (hereinafter referred to as 1wP mode) is set.

■When the mode flag M2 is set to rOJ, the no-underline mode is set.

When the mode flag M2 is set to rlJ, the underline mode is set.

■When the mode flag M3 is set to "0", the paper feed amount per line is set to the first space (SP-1), and when the mode flag M3 is set to "1", the paper feed amount for each line is set to the second space (SP-1). SP-2).

Next, the operation of this embodiment will be described with reference to the key operations shown in the second figure and the flowchart shown in the third figure.

In the key operation procedure l shown in the second figure, the power switch (not shown) on the keyboard is pressed to turn on the power.Then, the microprocessor clears the contents of the RAM and sets the cursor pointer CP to 1''. The press of the control key CTRL is then detected (step S2). Since the control key CTRL has not been pressed yet, the process advances to step S3 and the data in the line buffer LB is stored for display. Memory D
Transfer to ISPH. Then 1 display memory DISP
While displaying the contents of H on the display DI'S (see FIG. 1), it waits for other keys to be pressed (steps S4 and S5).

When the control key CTRL continues to be pressed in step 2 (the downward arrow in FIG. 2 means that the key is continuously pressed), this is detected in step S6,
Return to step S2 again. Therefore, the control is performed in step S7.
, and set each mode flag old, M2. The display is performed according to M3, that is, when the power is turned on, the RAM is cleared and the display is old -M2-M3.0.
Display memory 0ISPN has “CP XI 5P”
-1'' is stored. Here, CP represents character-by-character printing mode, xx represents no-underline mode, and sp-t represents St space paper feeding mode.

After that, the contents of the display memory DISPH are transferred to the display device DI.
Waits for the finger to be released from the control key CTRL or for a key other than the control key CTRL to be pressed (step S8, 5i).
ll, 5IQ).

In step 3, when the character key 11 W 11 is pressed, control proceeds to step Sll, 512 . Proceeding to S13, the mode flag old is set to "1 ++." After that, the process returns to step S2, and the process further proceeds to step s7. At this time, since the flag old is -1l, the process is shown in step 3 of FIG. The display data like this is stored in the display memory DI.
After storing in the SPH, a control loop similar to that in Step 1 is executed. Thus, "WP" representing the wp print mode is displayed.

In step 4, when the finger is released from the control-CTRL, this is detected in step s9, and the process returns to step S2, and then proceeds to step s3, where the same control process as in step 1 is executed. In this way, a display (blank display) as shown in step 4 of FIG. 2 is displayed while waiting for a key to be pressed.

In step 5, when the character key "T" is pressed, control proceeds to step S8. The process moves to S17.

Here, since the character key ° "T" has been pressed, the process proceeds to step S18. In step 91B, since the mode flag is old lIl, the process proceeds to step 5till.

In step S19, the input character "T" is stored in the line bar FLB at the position indicated by the cursor pointer (CP-1), and then the cursor pointer is incremented by one. After that, in step 2 S20, the input key is
It is determined that is not the space key, and control is returned to step S2.

In step 6, press the character key "h""iIT"
When °S°° is pressed down continuously, the same control process as in step 5 is executed, and a display as shown in FIG. 2 is produced.

If the space key is pressed in step 7, step 5
Similar to the case in step S6→S17→S18→S
19 is executed. After that, step S2
When it is determined that the input key is the space key at step S21, the process moves to step S21 to print the data "'Th1s" stored in the line buffer LB.
At step 22, the line buffer LB is cleared and 1 is stored in the cursor pointer.

In step 9, when the character key II U 11 is pressed while pressing the control key CTRL, the control moves to steps S11→S12→S14→S15. In step S15, the mode flag is M2-0, so in step S1G, the mode flag M2 is set to II.
IIT is set, and the underline mode is displayed as shown in FIG. 2 (steps S7 and S8).
.

In step 10, when the finger is released from the control key CTRL, a control loop is executed to wait for the next key press, as in step 4 (the control mode display disappears).

In steps 11 and 12, the character key CII
When “A”, “N”, and XX are pressed continuously,
The same control process as in step 5 is carried out. However, in step S19, since the mode flag is M2-1, the input character string is stored in the line buffer LB together with the underline. Thus, as shown in step 12 of FIG. 2, an underlined display is made.

In step 13, press the character key II U'' while pressing the control key CTRL, and step 9
The same control process as in the case of step S is executed, and the control is executed up to step S15 in FIG. however.

Since the mode flag M2-1 has been set, the mode flag M2 is reset in step S23. Thus, "■" indicating the operation mode without underlining is displayed on the display device DNS.

In step 14, when the user releases the control key CTRL and then presses the space key, the same control process as in step 7 is executed.

However, since the mode flag is M2.l, step S2
9, the input character string is printed with an underline.

In addition, in the embodiment described above, the control key CTRL
Although the control mode is configured to be displayed only while the button is pressed, by using a known timer circuit, for example, the display mode can be displayed on the alphanumeric display for one second after specifying a predetermined control mode. It is also possible to configure it to do so.

〔effect〕

As explained above, according to the present invention, when specifying various control modes by combining a specific control key and other keys, the content of the control mode is changed to normal alphanumeric characters only within a predetermined period. Since it can be displayed on a display, various control modes can be specified without providing a large number of control keys, and at the same time, it is possible to realize an electronic device that does not require a large number of control mode indicators.

[Brief explanation of the drawing]

"Fig. 1 is a block diagram showing a schematic configuration of an electronic typewriter that is an embodiment of the present invention. Fig. 2 is a diagram explaining the key operation procedure and operating state of this embodiment. Fig. 3 is a diagram illustrating the key operation procedure and operating state of this embodiment. It is a flowchart showing the control procedure. PH7...Printer, DIS...Display, KB...Keyboard, αN...Alphanumeric keys, MP...Microprocessor, BUS...Pass line, RAM...Random access memory, ROM...Read only memory, LB...Line buffer, DI SPM...Display memory, CP...Cursor pointer, old, M2, M3...Mode flag .

Claims (1)

[Claims] 1) In an electronic device equipped with a keyboard and a display means, when various control modes are specified by a combination of a specific control key and another key, the control mode is limited to a predetermined period. An electronic device comprising display control means for displaying the contents of the mode on the display means. 2) The electronic device according to claim 1, wherein the display control means performs control so that the control mode display is performed only while the control key is pressed.