JPH11312053A - Screen touch input device - Google Patents

Abstract

(57) [Summary] [Problem] To identify a driver and a passenger in a moving object, it is necessary to install a new device such as a seating detection device, and the number of devices other than a display increases. there were. SOLUTION: When a driver in a driver seat or a passenger in a passenger seat touches the display protection plate 2, the direction of the horizontal component of the finger pressing force applied to the display protection plate 2 changes according to the riding position of the touching person. . Normally, the touch panel is placed between the driver's seat and the passenger seat, so that, for example, in the case of operation from the driver's seat, the direction of the pressing force is the direction of drawing toward the driver's seat. In the case of an operation from the passenger seat, the direction is toward the passenger seat. Therefore, when the direction of the pressing force is sensed, the operator can be identified without installing any device other than the touch panel.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screen touch panel for inputting information by detecting a touch on a switch displayed on a screen.

[0002]

2. Description of the Related Art Conventionally, a vehicle is equipped with a large number of auxiliary devices such as a radio, an audio system and an air conditioner which are not directly related to the running of the vehicle. Among such auxiliary devices, there is a navigation device, and vehicles equipped with the navigation device are increasing.

[0003] A navigation device requires a display to display the current position on a map, and requires various operations such as inputting a destination. The vehicle is limited in space, and a dedicated switch cannot be provided for each auxiliary device. Therefore, the display surface is used as a touch panel, and the display on the display is used as a switch. This display is used not only for the navigation device but also for operation switches of other auxiliary devices such as radio and audio, and a dedicated switch is often omitted.

As described above, various inputs are performed using the touch panel. However, input operations are complicated or difficult. For example, it is relatively difficult to set a destination of a navigation device. Here, it is difficult for the driver to perform complicated operations of the device during traveling, but there is no problem for the passenger to perform complicated operations. Therefore, depending on the switch, only the operation of the fellow passenger may be accepted during traveling, and the operation of the pilot may be restricted. For this purpose, it is necessary to identify whether the given operation is for the pilot or the passenger.

To meet such a demand, Japanese Patent Laid-Open No.
In JP-A-103778, an identification signal is applied to a pilot or a passenger. Then, when an operation is performed on the transparent electrode provided on the display, by detecting an identification signal supplied to the transparent electrode via the operator,
It identifies whether the operation is a pilot operation or a passenger operation.

[0006]

However, according to the above-mentioned conventional example, it is necessary to apply some signal to the operator or a passenger in order to identify the operator. For this reason, in order to apply a signal, for example, a conductive sheet is provided under a seating portion of a passenger seat, it is necessary to install devices other than the display, and there is a problem that the number of devices to be installed increases. In addition, since the recognition signal must be applied to the human body, there has been a problem that the signal is weakened or noise is mixed, thereby lowering the recognition accuracy.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and a screen touch panel capable of effectively identifying an operator without applying a signal to a human body. The purpose is to provide.

[0008]

SUMMARY OF THE INVENTION The present invention relates to a screen touch type input device, which detects a touch on a number of reaction points located above a screen and inputs information, and the information is input on the screen. A switch display means for displaying a switch, a position detecting means for detecting a touch position on the displayed switch, and an identification means for identifying an operator by touching the displayed switch.

[0009]

Embodiments of the present invention (hereinafter referred to as embodiments) will be described below with reference to the drawings. FIG. 1 shows the principle of identifying an operator according to the embodiment of the present invention.
The touch panel has a display protection plate 2 for protecting the display 1 on the display surface side of the display 1. When the driver in the driver's seat or the passenger in the passenger's seat touches the display protection plate 2, the direction of the horizontal component of the pressing force of the finger applied to the display protection plate 2 changes depending on the riding position of the touching person. Normally, the touch panel is placed between the driver's seat and the passenger seat, so that, for example, in the case of operation from the driver's seat, the direction of the pressing force is the direction of drawing toward the driver's seat. In the case of an operation from the passenger seat, the direction is toward the passenger seat. Therefore, the direction of the pressing force, for example,
When the direction in which the display protection plate 2 moves is sensed by the pressing force, the operator can be identified. The display protection plate 2 is made of acrylic or the like. The display 1 is, for example, a liquid crystal display (LCD).

FIG. 2 shows a configuration of a touch panel utilizing this principle. The touch panel includes a display 1 for displaying a touch switch immediately below a display protection plate 2 and a display 1 for protecting the display 1.
, A display protection plate 2, a touch switch processing substrate 3, a pressure-sensitive sheet 4 and a pressure-sensitive sheet 5.

FIG. 3 is a schematic view of a section taken along line AB in FIG. As shown in FIG. 3, the pressure-sensitive sheets 4 and 5 are provided between the display protection plate 2 and the touch switch processing board 3. As the pressure-sensitive sheet, for example, a film-type pressure-sensitive sensor is used. The film-type pressure-sensitive sensor increases as the applied pressure increases.
The resistance value decreases. Therefore, by detecting the resistance value of the pressure-sensitive sheet 4 and the resistance value of the pressure-sensitive sheet 5 and comparing the resistance values, it is possible to determine which pressure-sensitive sheet is applied with a large pressure. In the case of operation from the driver's seat side, since the display protection plate 2 moves in the driver's seat direction, a large pressure is applied to the pressure-sensitive sheet 5 and the resistance value of the pressure-sensitive sheet 5 decreases. Conversely, in the case of operation from the passenger seat side, a large pressure is applied to the pressure-sensitive sheet 4, and the resistance value of the pressure-sensitive sheet 4 decreases. Therefore, by applying a voltage to the pressure-sensitive sheets 4 and 5 independently and detecting the amount of current, the pressure applied to the pressure-sensitive sheets 4 and 5 can be detected.

FIG. 4 is a block diagram showing the overall configuration of a touch position identification and operator identification system using the touch panel shown in FIG. The display ECU 6 is connected to the touch panel. The information of the pressure-sensitive sheet 4, the pressure-sensitive sheet 5, and the touch switch 7 allows the display ECU 6 to specify the touch position and identify the operator. Based on the result, it is determined whether the input information is valid. That is, for the specific operation, only the operation of the fellow passenger is enabled.

A method of specifying a touch position and identifying an operator performed by the display ECU 6 will be described with reference to a flowchart of FIG. The touch panel of the present embodiment is of an optical type, scans the display 1 with infrared rays, and detects an operation position from a position blocked by a finger. Scanning is performed at a certain fixed cycle, and a place where a touch is detected for two consecutive cycles is specified as a touch position. First, infrared light is scanned to detect a touch position (S11). Then, it is determined whether the touch position has been detected for two consecutive periods by the display ECU 6 (S12). If it is not the position touched for two consecutive cycles, the process returns to S11. If the touched position is the position touched for two consecutive periods, the resistance value from the pressure-sensitive sheets 4, 5 is detected (S13). And the display ECU 6
Then, the resistance value (rL) of the pressure-sensitive sheet 4 is compared with the resistance value (rR) of the pressure-sensitive sheet 5 (S14). If the value of rL is small, the person riding on the left side of the display 1 is recognized as a passenger operation (S15), and if the value of rR is large, the person riding on the right side of the display 1, that is, steering is performed. The user operation is identified (S16).

In the above-described embodiment, the pressure-sensitive sheet is provided to detect the movement of the display protection plate 2. However, the present invention is not limited to the pressure-sensitive sheet, and other strain gauges may be used.

In another embodiment, a method of identifying a touch panel using a displacement of a touch position without using a pressure-sensitive sheet will be described. FIG. 6 illustrates the principle of identifying an operator without using a pressure-sensitive sheet. In the case of detecting a touch position by scanning infrared rays, an area where a touch is detected only for one cycle,
There is a place to detect touches continuously in a cycle. For example, a passenger sitting on the left side of the display touches the touch panel from the left side of the center of the display, so that the touch position is shifted to the right side. Therefore, when comparing the center position B of the area where touch is detected only for one cycle and the position A where touch is detected for two cycles in a row, the operation on the passenger side, that is, the touch from the left direction toward the display, is A Is shifted to the right from B. Conversely, A is shifted to the left of B by an operation from the cockpit side, that is, a touch from the right toward the display.

A method of detecting a touch position and identifying an operator using this principle will be described with reference to the flowchart of FIG. The scanning is performed for two cycles, and the touched position is detected (S21). Then, it is determined whether the touch position is detected for two consecutive periods by the display ECU 6 (S2).
2). If there is no touched position for two cycles in a row, S2
Return to 1. If there is a position touched for two consecutive periods, the position A is specified first (S23). Further, the center position B of the area where only one cycle is detected is obtained (S2
4). Then, the display ECU 6 compares the locations of A and B (S25). If A is on the right side of B, it is determined that the operation is on the passenger side (S26). If A is on the left side of B, the operation on the pilot side is performed. An operation is performed (S27).

[0017]

As described above, the screen touch panel according to the present invention can identify the operator by sensing the touch direction of the screen. Therefore, the operation can be restricted according to the identification result. Further, since the identification device itself is provided on the touch panel, there is no need to provide another identification means different from the touch panel such as a conductive sheet embedded in the passenger seat portion, and a simple identification means is provided. be able to.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating an identification principle of an embodiment.

FIG. 2 is a diagram illustrating a configuration of a touch panel according to the embodiment.

FIG. 3 is a diagram schematically illustrating a cut surface of the touch panel according to the embodiment;

FIG. 4 is a block diagram illustrating an overall configuration of a touch position identification and operator identification system using the touch panel according to the embodiment.

FIG. 5 is a flowchart illustrating a processing operation according to the embodiment.

FIG. 6 is a diagram illustrating an identification principle of another embodiment.

FIG. 7 is a flowchart illustrating a processing operation of another embodiment.

[Explanation of symbols]

 3 Touch switch processing board, 4,5 pressure sensitive sheet.

Claims (1)

[Claims] 1. An apparatus for inputting information by detecting a touch on a number of reaction points located above a screen, comprising: switch display means for displaying a switch on the screen; and touching the displayed switch. A screen touch-type input device, comprising: a position detection unit that detects a position; and an identification unit that identifies an operator by touching a displayed switch.