Computer graphics processing and selective visual display system – Display peripheral interface input device – Touch panel
Reexamination Certificate
1998-06-23
2001-05-15
Hjerpe, Richard (Department: 2774)
Computer graphics processing and selective visual display system
Display peripheral interface input device
Touch panel
C345S175000, C178S018090
Reexamination Certificate
active
06232961
ABSTRACT:
INCORPORATION BY REFERENCE
The disclosure of Japanese Application No. Hei 9-170087 filed on Jun. 26, 1997 including the specification, drawings and abstract is incorporated herein by reference in its entirety.
BACKGROUND OF THE INVENTION
1. Field of Invention
The present invention relates to a display apparatus which performs a display operation corresponding to display content of a button display portion when “on” data, showing that an operating surface is press-operated, is inputted. Coordinate data showing a touched position on the operating surface corresponds to a coordinate of the button display portion that is displayed on the display screen.
2. Description of Related Art
Vehicles, for example, are provided with a conventional display device with a touch operation function. One example of this display device is constructed to detect a touched position with respect to a display screen through an optical sensor. Specifically, light projecting elements and light receiving elements are arranged so as to form a plurality of parallel optical axes corresponding to vertical and horizontal directions of the display screen. By touching the display screen with a finger, some optical axes extending between the light projecting elements and the light receiving elements are blocked, a center position of the touched area is detected and the coordinate data is outputted.
Accordingly, when an air conditioner screen, for example, is displayed, it is possible to arbitrarily adjust the air conditioning function in the vehicle by touch-operating a button display portion which is displayed on the screen for the air conditioner. By using the display device with this type of touch operation function, it is possible to omit switches for devices on the vehicle, such as the air conditioner, a radio, or a car navigation system. Therefore, the instrument panel can look neat.
In the conventional display device with the touch operation function as described above, the driver is required to touch the display device by stretching his arm, thus rendering controllability of the display device insufficient. Therefore, separating the touch operation function from the display device has been considered. A touch operation information output device, that outputs coordinate data showing the finger-touched position on the operating surface and also outputs “on” data indicating that operating surface is press-operated, is disposed separately from the display device. The touch operation information output device is installed, for example, on the arm rest of the driver's side door so that it is possible to improve operability by the driver. However, because, for example, the button display portion of the map screen is displayed quite small without standing out, the button display portion is difficult to recognize even though operation is improved. Problems remain such that a user can select an erroneous button display portion by a touch operation of the touch operation information output device.
Furthermore, in order to select a button display portion which is displayed on the display screen, the user has to press-operate the operating surface in a state where the user touches the operating surface of the touch operation information output device. It is easy to perform an erroneous operation of the touch operation information output device and, because of this, the display device has a disadvantage of performing the displayed operation corresponding to the button display portion which was selected by mistake.
SUMMARY OF THE INVENTION
The present invention reflects upon the above-mentioned situation and the objectives are to improve the selection operation of the button display portion for a user with a structure in which the display screen is switched in response to the selected button display portion, and to provide a display device which prevents the user from selecting the button display portion by mistake regardless of erroneous operation by the user.
The present invention is arranged so as to input coordinate data showing the touched position on an operating surface disposed at a specified position, and “on” data showing that the operating surface has been press-operated. When the “on” data is input in a state in which the input coordinate data corresponds to a button display portion which is displayed on the display screen, a display device equipped with display means performs a display operation corresponding to the button display portion and the display means displays the button display portion in an enlarged state on the display screen when the coordinate data is input.
According to the invention, when the user performs the touch operation on the operating surface, the coordinate data showing the touched position for the operating surface is inputted. Then, the display means determines that the user performed the touch operation on the operating surface when the coordinate data is input, and the button display portions which are displayed on the display screen are displayed in an enlarged state. By so doing, the user can easily confirm the button display portion so that it is possible to accurately select a desired button display portion by the touch operation of the operating surface.
In the invention using the display means in a state where a button display portion is displayed in an enlarged state, it is acceptable to change the display configuration of the button display portion when the input coordinate data corresponds to the button display portion.
According to the invention, when touching the operating surface corresponding to the button display portion, the display means changes the display configuration of the button display portion so that the user can confirm the button display portion selected. Furthermore, the display means can invalidate the input coordinate data and the “on” data when the “on” data is input simultaneously with the start of the input of the coordinate data.
According to the invention, when the user suddenly press-operates the operating surface, and it is determined as an erroneous operation, the display means invalidates the input coordinate data and the “on” data when the “on” data is input simultaneously with the start of the input of the coordinate data. By so doing, it is possible to prevent execution of the erroneous display operation by the simultaneous pressing of the operating surface. Furthermore, the display means can invalidate the input coordinate data and the “on” data when the button display portion corresponding to the input coordinate data changes in an input state of the “on” data.
According to the invention, when the user press-operates the operating surface and the button display portion corresponding to the input coordinate data changes through a change of the touched position of the operating surface, it can be determined as an erroneous operation. Therefore, the display means can invalidate the input coordinate data and the “on” data when the button display portion corresponding to the input coordinate data changes in an input state of the “on” data. By so doing, it is possible to prevent the execution of the display operation by mistake due to moving the touched position in a press-operating state of the operating surface.
Furthermore, the display means can validate the button display portion that was invalidated prior to the change when the button display portion corresponding to the coordinate data changes at the input timing of the “on” data.
According to the invention, when the touched position for the operating surface moves at the timing at which the user press-operates the operating surface, it is determined as an erroneous operation so that the display means validates the button display portion that was indicated prior to the change when the button display portion corresponding to the coordinate data changes at the timing when the “on” data is input. By so doing, it is possible to prevent the execution of the display operation by mistake due to moving the touched position during the press-operation of the operating surface.
REFERENCES:
Kunimatsu Yoshimasa
Mori Satoshi
Morikawa Minoru
Nagasaka Chikao
Nishikawa Masato
Eisen Alexander
Hjerpe Richard
Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho
Oliff & Berridg,e PLC
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