JPH10111749A - Portable terminal equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compact portable terminal equipment by activating a control part by the output signals received from the depression recognition means and recognizing the depressed key signals via an analog touch panel reading means. SOLUTION: An analog touch panel 14 is connected to a control part 11 via a depression recognition means 13 and also via an analog touch panel reading means 17 consisting of an A/D converter, for example. On the other hands, the analog touch panels 15 and 16 are connected to the part 11 via the 2nd and 3rd depression recognition means 18 and 19 respectively and also via the means 17. The part 11 is activated by the output signals of the means 13, 18 and 19 and recognizes the depressed key signals outputted from the panel 14 via the means 17.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable terminal device.

[0002]

2. Description of the Related Art A conventional portable terminal device will be described below.

As shown in FIG. 3, a conventional portable terminal device includes a keyboard panel 1 and a microprocessor 2 connected to the keyboard panel 1 as a control unit. When the keyboard panel 1 is pressed, the signal is transmitted to the interrupt input terminal 3 of the microprocessor 2 to detect a key input, and the key input becomes an interrupt signal, activating the microprocessor 2. This is a device for reducing power consumption.

[0004]

However, in such a conventional configuration, as the number of keys on the keyboard touch panel 1 increases as shown in FIG. 3, the wiring between the keyboard touch panel 1 and the microprocessor 2 increases. There has been a problem that the size of the portable terminal device increases.

An object of the present invention is to solve such a problem, and an object of the present invention is to provide a portable terminal device which is small and consumes low power.

[0006]

In order to achieve this object, a portable terminal device according to the present invention comprises: an analog touch panel;
A depression recognition unit and an analog touch panel reading unit connected to the analog touch panel; and a control unit that controls the depression recognition unit and the analog touch panel reading unit. The control unit detects the depression detected by the depression recognition unit. A push key signal output from the analog touch panel and activated by a signal is recognized through the analog touch panel reading means.

As a result, a portable terminal device that is reduced in size and consumes less power can be realized.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is directed to an analog touch panel, a pressing recognition means and an analog touch panel reading means connected to the analog touch panel, and the pressing recognition means and the analog touch panel reading means. A mobile terminal device that is activated by an output signal from the press recognition unit and recognizes a press key signal output from the analog touch panel through the analog touch panel reading unit. With this configuration, even when a large number of information lines are required on a panel such as a map panel and thus a large number of connection lines are required, the analog touch panel and the A
The number of connection lines can be reduced by using the analog touch panel reading means constituted by the / D converter.
As a result, the product can be downsized.

Further, since the depression of the key on the analog touch panel is detected by the depression recognition means and the control section is activated by the output signal of the depression recognition means, the control section is operated until the output signal of the depression recognition means is obtained. A power consumption mode can be set, and a portable terminal device with low power consumption can be realized.

According to a second aspect of the present invention, there is provided the portable terminal device according to the first aspect, wherein the control unit controls a plurality of analog touch panels. A wiring saving effect appears in the wiring between them.

According to a third aspect of the present invention, there is provided the portable terminal device according to the first aspect, wherein an output of a switch is connected to the control unit via a depression recognition unit. Even in the case of a configuration using a plurality of switches, the control unit can be activated by any one of the depression recognition signals.

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a block diagram of a portable terminal device of the present invention. In FIG. 1, reference numeral 11 denotes a control unit constituted by a microprocessor as a core, and a switch 12 is directly connected to the control unit
Is connected to the control unit 11 via the. Reference numeral 14 denotes an analog touch panel.
Reference numeral 4 is connected to the control unit 11 via the press recognition unit 13 and to the control unit 11 via an analog touch panel reading unit 17 constituted by, for example, an A / D converter.

For example, in order to add input information,
When the analog touch panels 15 and 16 are used, they are connected to the control unit 11 via the second and third press recognition units 18 and 19, respectively, and to the control unit 11 via the analog touch panel reading unit 17.

In such a case, the analog touch panel reading means 17 can be used in common for the first, second, and third analog touch panels 14, 15, and 16, so that it is not necessary to provide a plurality of analog touch panel reading means.

FIG. 2 is a circuit diagram of the periphery of the pressing recognition means 13, and its operation will be described below. First, the control unit 11
The first port 22 is set to the input state, and the first port 22 is connected to the power supply 38 via the resistor 37 to set the input state to “H”. At the same time, the OR circuit 36 and the resistor 3
5, a current flows to the base of the transistor 34,
The transistor 34 is turned on. Further, the output states of the third port 29 and the fourth port 30 are set to “L”.
And this is an initial state. If any coordinate key in the analog touch panel 14 is pressed later, the current flowing at that time reaches the analog switch 26 from the power supply 38 via the resistor 25. Here, the control terminal 26A of the analog switch 26 has the first port 22 in the input state “H”.
6 is turned on, and the current is supplied to the analog switch 26.
Through the resistor 27 and the analog touch panel 14
Reaches the resistor 23 for determining the X coordinate in the box. At this time, this current is transmitted to the resistor 24 for determining the Y coordinate, and flows to the ground through the collector of the transistor 34. Furthermore, the resistance 2 in the analog touch panel 14
Since the combined resistance value of the resistors 3, 24 and the resistor 27 is sufficiently smaller than the resistor 25 provided outside, the second input port 28 is in the "L" state. When this signal is input to the control unit 11, an interrupt signal is generated and the control unit 11
Is activated. At this time, since the resistance 25 is a high resistance, the X-direction resistance value of the pressed analog touch panel,
The combined resistance value with the Y-direction resistance value is indeterminate, and the control unit 11
Can not calculate the coordinate value.

Therefore, immediately after that, the first port 22 is set to the output state "L", and the analog switch 26 is turned off. To read an accurate X coordinate continuously, by setting the third port 29 to the output state “H” and setting the fourth port 30 to the output state “L”, the transistors 31 and 32 are output.
, The transistors 31 and 32 are turned on, and a current flows through the resistor 23 for determining the X coordinate in the analog touch panel 14. By inputting the voltage value at that time to the control unit 11 via the terminal 40 in the analog touch panel reading means 17 connected to both ends of the resistor 24, the voltage value can be recognized as an X-direction coordinate value. To read the Y coordinate continuously,
The third port 29 is set to the output state “L”, and the fourth port 30
To the output state “H”, the transistor 3
3, 34 base currents flow and the transistors 33,
34 is turned on, and the analog touch panel 14 is turned on.
A current flows through the resistor 24 for determining the Y-coordinate in the above. The voltage at that time is applied to the terminal 3 in the analog touch panel reading means 17 connected to both ends of the resistor 23.
By inputting the data to the control unit 11 through the control unit 9, it can be recognized as a Y-direction coordinate value. From the above, it is possible to calculate an accurate coordinate value in the analog touch panel 14 currently pressed.

In the initial state, the switch 12
Is pressed, one end of the switch 12 is connected to the ground, and the other terminal is connected to the first port 22 of the control unit 11 via the resistor 21. At this time, since the resistance 21 is sufficiently smaller than the resistance 37, the first port 22 is in the “L” state. When this signal is input to the control unit 11, an interrupt signal is generated and the control unit 11 is activated.

[0018]

As described above, according to the present invention, an analog touch panel, pressing recognition means and analog touch panel reading means connected to the analog touch panel, and control for controlling the pressing recognition means and the analog touch panel reading means are provided. Wherein the control unit is activated by an output signal from the press recognition unit, and recognizes a press key signal output from the analog touch panel through the analog touch panel reading unit. With this configuration, even when a large amount of information is present on a panel such as a map panel and thus a large number of connection lines are required, an analog touch panel and an analog touch panel such as an A / D converter can be read. It is possible to reduce the number of connection lines by using means It can, can reduce the size of the product as a result.

Further, since the depression of the key on the analog touch panel is detected by the depression recognition means, and the signal can be used to activate the control unit, the control unit can be set to the low power consumption mode until the depression recognition signal of the analog touch panel is recognized. Thus, a portable terminal device with low power consumption can be realized.

[Brief description of the drawings]

FIG. 1 is a block diagram of a portable terminal device according to an embodiment of the present invention;

FIG. 2 is a circuit diagram around the press recognition means.

FIG. 3 is a block diagram of a conventional portable terminal device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Control part 13 Depression recognition means 14 Analog touch panel 15 Analog touch panel 16 Analog touch panel 17 Analog touch panel reading means 18 Depression recognition means 19 Depression recognition means

Claims (3)

[Claims] 1. An analog touch panel, comprising: a depression recognition unit and an analog touch panel reading unit connected to the analog touch panel; and a control unit that controls the depression recognition unit and the analog touch panel reading unit. A portable terminal device which is activated by an output signal from a pressing recognition unit and recognizes a pressing key signal output from the analog touch panel through the analog touch panel reading unit. 2. The mobile terminal device according to claim 1, wherein the control unit controls a plurality of analog touch panels. 3. The portable terminal device according to claim 1, wherein an output of a switch is connected to the control unit via a depression recognition unit.