JPH0353312Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention uses one operation unit to turn on the first switch by an initial shallow push operation.
The present invention relates to a key input device for electronic equipment that uses a two-stage operation switch, a so-called double-action type tact switch, in which a second switch is turned on when the switch is pressed more deeply.

(Prior art) In a double-action type switch, a first switch and a second switch are provided with mutually independent functions, and the two functions can be switched by appropriately operating one operating section. This is an extremely effective switch when multiple function switching operations are required in a small space, such as in a car stereo.

The mechanical on/off of the first and second switches is, for example, the first switch is turned on by a shallow push, and the second switch is turned on by a deeper push. If this mechanical on state of the second switch is directly determined as the switch function being on, the first switch will always be on when the second switch is on, and they cannot be operated independently of each other. Therefore,
On/off determination in conventional double-action type tact switches has been carried out by the means described below with reference to FIGS. 4 to 6.

In FIGS. 4 to 6, 1 indicates a first switch, 2 a second switch, and 3 a control section, respectively.

First, the control unit 3 monitors the first switch 1 and determines that the first switch has been mechanically turned on when the operating unit (key top) is pressed lightly. Next, the control unit 3
monitor switch 1 and second switch 2 and check whether the first switch is turned off mechanically or the operating part is pushed deeper and the second switch is turned on mechanically. do. Here, when the first switch 1 is mechanically turned off, the control unit 3 determines that the switch function of the first switch is turned on at the time of turning off, and the second switch 2 is mechanically turned off. If the second switch 2 is turned on, it is determined that the switch function of the second switch 2 is turned on at the moment the second switch 2 is turned on. and,
When you release your hand from the operation part, the second switch is mechanically turned off, and then the first switch 1 is mechanically turned off, but the switch function of the second switch 2 has already been determined to be on. Therefore, when the first switch 1 is mechanically turned off, the control unit 3
does not make any on/off decisions.

(Problem to be Solved by the Invention) In the above-mentioned conventional key input device for electronic equipment, when the first switch is mechanically turned off, the first switch is turned off mechanically.
It is determined that the switch function of the second switch is turned on, and when the second switch is mechanically turned on, it is determined that the switch function of the second switch is turned on. The first switch turns on when you take your hand off the control panel, and the second switch turns on when you press the control panel deeply, causing a sense of discomfort during operation, which can lead to anxiety and erroneous operation. The point was hot.

The purpose of the present invention was to solve the problems of conventional key input devices for electronic devices. To provide a key input device for an electronic device that improves operability by eliminating discomfort during operation by performing the key input while pressing.

(Means for Solving the Problems) In order to achieve the above object, the key input device according to the present invention includes a first switch that is turned on mechanically by a shallow push on the operating section, and a deeper switch on the operating section. a second switch that is turned on mechanically by a push button; a control unit that makes an input determination by operating the first and second switches;
a timer that starts operating when the first switch is mechanically turned on, the timer starts operating when the first switch is mechanically turned on, and the timer starts operating within a predetermined time set in the timer. When the second switch is mechanically turned on, the control section determines that the switch function of the second switch is turned on, and the second switch is turned on within a predetermined time.
If the first switch is not mechanically turned on, the control section is configured to determine that the switch function of the first switch is turned on.

(Function) The first switch is mechanically turned on by a small stroke operation of the operating section, and as a predetermined voltage signal is input, the timer starts operating for a predetermined time, and the timer starts operating for a predetermined time. The control section monitors whether or not a predetermined voltage signal is input from the second switch by a large stroke operation of the operation section. It emits an output signal indicating that the second switch has been operated, and when the voltage signal from the second switch is not input within a predetermined time, it emits an output signal indicating that the first switch has been operated. Since it is configured,
The on/off state can be determined while operating the operation unit, and the operability of the key input device of the electronic device can be improved. In the prior art, even if the rising edge of the input signal to the first switch is detected, the prior art determines whether the input to the first switch is on on the condition that the input signal to the first switch is off. Above is the first one until it turns off.
However, in the present invention, the input ON state of the first switch can be determined before the first switch is turned off.

(Description of Embodiments) Hereinafter, embodiments of the present invention will be described based on FIGS. 1 to 3. In FIG. 1, the same parts as in FIG. 4 are given the same reference numerals, and redundant explanation will be omitted.

In FIGS. 1 to 3, 4 is a timer which, when the first switch 1 is mechanically turned on, starts operating in response to a command from the control unit 3 and counts a preset time.

First, the control section 3 monitors the first switch 1, and the first switch is turned on mechanically by shallowly pushing the operation section (first stroke operation), and a predetermined voltage signal is detected. and issues a count request to timer 4. timer 4
counts the set predetermined time T. Next, the control unit 3 controls the timer 4 and the second switch 2.
A predetermined voltage signal input from the switch is monitored, and before the timer 4 counts the predetermined time T, the operating section is pushed deeper (second stroke operation) and the second switch 2 is mechanically turned on. When the voltage signal is input to the control unit 3, the control unit 3 switches the switch function of the second switch 2 to ON at the moment the voltage signal is turned on.
If the second switch is not mechanically turned on even after the predetermined time T elapses, that is, if no voltage signal is input, the first switch is turned on when the timer 4 counts the predetermined time T. switch 1
The control unit 3 determines that the switch function is turned on. Note that if the first switch 1 is mechanically turned on and the timer 4 starts operating, and the second switch 2 is mechanically turned on after the timer 4 has counted the predetermined time T, the first switch 1 has already been turned on. Since the control unit 3 determines that the switch function of the first switch 1 has been turned on when a predetermined time T has elapsed since the switch 1 was mechanically turned on, the second switch 2 is turned on mechanically. Even if it is turned on, it does not determine whether it is on or off at this point. Therefore, if there is a delay in pressing the operating section deeply and mechanically turning on the second switch 2, then release your hand from the operating section and try again to push the operating section again. Turn on switch 1 mechanically to operate timer 4.
The second switch 2 may be mechanically turned on during operation.

(Effects of the Invention) As explained above, according to the key input device for electronic equipment of the present invention, the first switch outputs a predetermined voltage signal by a small stroke operation of the operating section, and the first switch outputs a predetermined voltage signal by a small stroke operation of the operating section. a second switch that outputs a predetermined voltage signal when operated;
A timer that starts operating for a predetermined time when a predetermined voltage signal is input from the switch, and whether or not the predetermined voltage signal is input by the second operation within the predetermined time that the timer operates. monitors the switch, emits an output signal indicating that the second switch is operated when the voltage signal from the second switch is input, and inputs the voltage signal from the second switch within the predetermined time. Since it is equipped with a control section that emits an output signal indicating that the first switch is operated when the first switch is not operated, it is possible to judge whether it is on or off while operating the operation section, and when an input is received. This provides excellent effects such as improved responsiveness in generating input detection signals and exceptionally improved operability.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of the key input device for electronic equipment of the present invention, and FIG. 2 is a time chart showing the operating state of the embodiment of FIG.
3 is a flowchart of the embodiment of FIG. 1, FIG. 4 is a block diagram showing a conventional key input device for electronic equipment, and FIG. 5 is an operational state of the device of FIG. 4. FIG. 6 is a flowchart of the apparatus shown in FIG. 4. 1...First switch, 2...Second switch, 3...Control unit, 4...Timer.

Claims (1)

[Scope of utility model registration request] A first switch that outputs a predetermined voltage signal by a small stroke operation of the operating section, a second switch that outputs a predetermined voltage signal by a large stroke operation of the operating section, and a predetermined voltage signal from the first switch. A timer that starts operating for a predetermined time when a signal is input, and a second When the voltage signal from the second switch is input, the second switch outputs an output signal indicating that it has been operated, and when the voltage signal from the second switch is not input within the predetermined time, the first switch outputs an output signal indicating that the second switch is operated. 1. A key input device for an electronic device, comprising: a control section that emits an output signal indicating that a switch has been operated.