JPS59160225A - Electronic apparatus - Google Patents

Abstract

PURPOSE:To obtain a device for expanding easily a kind of a key without increasing a hardware part by providing a means, etc. for displaying a layout of a keyboard by attaching a key name of each key, on a part of an indicator for displaying a data. CONSTITUTION:A means, etc. for displaying a layout of a keyboard by attaching a key name of each key are provided on a part of an indicator for displaying a data. For instance, a keyboard 3 containing a mode selecting switch 2, a power source switch 4, etc. are placed on an operating face 1, also an input data, etc. from the keyboard 3 are displayed on the upper half of an indicator CRT5, and a keyboard layout 6 is displayed on the lower half. Subsequently, a photoelectric sensor consisting of a light emitting part 31 and a photodetecting part 32 is provided on each key of the keyboard 3, and when a light from the light emitting part 31 is reflected by a finger 33 and made incident to the photodetecting part 32, it is detected that an operator's finger approaches. In this state, basing on a program stored in a memory 12 by a processing unit CPU11, the prescribed operation and processing are executed to a data, etc. inputted through the keyboard 3.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of the Invention) The present invention relates to a personal computer, a word processor, a data communication terminal device, an electronic kioche register, etc., in which the key is in the - mode and the key is in the - mode to display data input from the - mode. The present invention relates to an electronic device equipped with a display device.

(Background of the Invention) In conventional electronic devices of this type, when a large number of keys are required, a book-type (4-key type) keypad P is used to effectively utilize the limited keyboard space. It is used. However, the book type key date has the disadvantage that the cost increases because the code section is configured as a book type, and the number of E/Zs that can be expanded is also limited from a hardware perspective.

(Object of the invention) The present invention solves these conventional problems,
To provide an electronic device in which the types of keys, that is, the key names can be easily expanded without adding a hardware part.

(Structure and Effects of the Invention) In order to achieve the above object, the present invention provides an electronic device equipped with a keyboard and a CRT for displaying input data from the keyboard, in which a layout of the keyboard is arranged on a part of the CRT. means for displaying key names of keys; a mode selection switch for selecting part or all of the key names on the keyboard; The present invention is characterized in that it includes a code generating means for generating a code according to the key name displayed on the layout.

According to the present invention configured in this manner, the number of codes corresponding to each key can be increased as many times as necessary depending on the memory capacity, so there is no problem with expanding the number of keys. It is also possible to use the - key as an input means for mode selection; in this case, there is no change in the hardware configuration and no cost increase factor occurs. Furthermore, since even beginners can easily operate the system by looking at the layout on the CRT without looking at the keyboard, operational efficiency is improved.

(Explanation of Examples) Hereinafter, the present invention will be explained in detail using the drawings.

FIG. 1 shows an overview of an electronic device according to an embodiment of the present invention. In the same figure, 1 is the operation surface, mode selection switch 2
A key date 3 including a power switch 4, a power switch 4, etc. are arranged. 5 is a CRT, and the upper half of this CRT displays the keyboard 2 and input data, etc., as in the past, but the lower half displays the key layout 6, which is one of the features of the present invention. There is. And, although not shown,
Each segment of this layout 6 displays the key name of the corresponding key.

FIG. 2 shows the hardware configuration of the electronic device shown in FIG.

In the figure, 11 is a processing unit (CPU) and 12 is a memory. 3 and 4 are the keys shown in FIG. 1, respectively.

CPU 1] controls the operation of this electrical and electronic device.

As shown in the cross-sectional view of the key in FIG. When the light is reflected by the light and enters the light receiving section 32, it is detected that the finger of Otaku Rake approaches.

Note that this phase approach detection can also be performed using other known methods such as using a proximity switch.

The memory 12 consists of a ROM area in which a control program for the CPU 11 is stored, and a RAM area in which various data generated when the CPU 1 executes this control program are temporarily stored. As shown in FIG. 4, each $-(A, B, . . .
. . , 2, etc.), a flag F1 indicates that a finger approaches the key, a flag F2 indicates that the key is pressed, and a flag F2 indicates that the key is pressed. Second.・
...(5) In each mode, a key name area is provided for storing the key name of each key, that is, the code indicating the character (1 or text) etc. that is input by pressing that key and displayed on the CRT. There is.

Next, while referring to flowchart 1 in Figures 5 and 6,
The operation of the electronic device shown in the figure will be explained.

This electronic device searches for state changes for each key (finger approach to key, phase separation, key press, and key press stop) in addition to the device's original operation. This search can be performed, for example, by sequentially inspecting the photoelectric sensor (Fig. 1) and key switch (not shown) provided for each key, and checking the state of each key at that time (presence or absence of photoelectric sensor output and the key switch). The presence or absence of output) is memorized, and each time the above-mentioned test is performed, the state at that time is compared with the previously stored contents prior to memorization. and,
When the above state change is detected, the following interrupt processing is performed according to the content of this state change.

First, when a finger approaching a key is detected, a finger approaching flag F1 for the corresponding key is set. (6) When a key press is detected, the finger approach flag F1 of the corresponding key is checked, and if this flag F1 is set, the key press flag F2 is set. If the finger approach flag F
If 1 is not set, it is impossible for a key to be pressed without a finger approaching, and in this case, flag F2 is not set as a malfunction. When a discrepancy is detected, flags Fl and F2 are reset, and when a key press stop is detected, flag F2 is reset.

In this electronic device, the keyboard layout display process shown in FIG. 6 is performed at predetermined time intervals, for example, by timer interruption.

First, it is determined whether a mode is selected by the mode selection switch 2. If neither mode is selected, the key name corresponding to the pressed key is not selected, so either erase the CRT5's keyboard layout or key name display, or reset the display of flash, bright, etc. and end the process. If any mode is selected, the characters corresponding to that mode are displayed in each segment of the keyboard layout 6, and then the finger approach flag F1 and the key press flag F2 are checked. If the finger approach flag F1 is set and the key press flag F2 is not set, the corresponding key segment is displayed brightly (with higher brightness). If the flag F2 is set while the flag F1 is not, it means that the key was pressed even though no finger approached, and therefore error processing is performed as a malfunction. If both flag F1 and flag F2 are set, the key is pressed, so CRT5 keyboard layout 6
-1- flashes the segment corresponding to the pressed key (
(flashing)), then inspect the mode switch 2 to determine the setting mode. Then, by outputting a code according to the key name of the pressed key in the set mode, key processing is performed and the display processing is ended. I'm hooked, flag F.
If both 1 and F2 are not set, the flash and bright display of the segment of the corresponding key is reset and the display process ends.

Note that in this electronic device, the key name of each key is displayed on the CRT for each set mode, so there is no need to display the key name for each key on the keyboard. Rather, by not displaying a key name for each key on the keypad, it is possible for keys of any key arrangement to form a keypad.

[BRIEF DESCRIPTION OF THE DRAWINGS] FIG. 1 is a perspective view of an electronic device according to an embodiment of the present invention, FIG. 2 is a block diagram showing the hardware configuration of the electronic device shown in FIG. 1, and FIG. 2 is a partial sectional view of the keyboard in FIG. 2, FIG. 4 is a memory map showing a part of the structure of the memory in FIG. 2, and FIGS. 5 and 6 are flowcharts for explaining the operation of the electronic device in FIG. 1. 2...Mode selection switch, 3...Keyboard, 5
...CRT, 6...Keyboard layout, 11.
...CPU. 12... Memory, 31... Photoelectric sensor light emitting section, 32
...Photoelectric sensor light receiving section. (9) Fushi 1 Figure 4 Figure 5 Figure 2

Claims (1)

[Claims] 1. In an electronic device equipped with a keyboard and a CRT for displaying data input from the keyboard, a layout in which the keys are arranged on a part of the CRT is provided. means for attaching and displaying a key name for each segment corresponding to each key; mode selection means for selecting part or all of the key names on the keyboard; and mode selection means for selecting the key name for each segment of the keyboard; An electronic device comprising code generating means for generating a code according to a key name selected by the selecting means and displayed on the keyboard layout of the CRT. 2. The electronic device according to claim 1, wherein each key of the keyboard is provided with a detection means for detecting the approach of a finger, and the display mode of the segment corresponding to the key whose mutual approach is detected is changed. 3. The electronic device according to claim 1 or 2, wherein when the key is pressed, the segment corresponding to the pressed key is displayed in a different display mode than before the pressed key. 4. The electronic device according to any one of claims 1 to 3, wherein no key name is displayed on the keys of the keyboard.