Computer graphics processing and selective visual display system – Display peripheral interface input device – Cursor mark position control device
Reexamination Certificate
1998-04-16
2001-02-13
Shankar, Vijay (Department: 2778)
Computer graphics processing and selective visual display system
Display peripheral interface input device
Cursor mark position control device
C345S182000, C345S179000
Reexamination Certificate
active
06188388
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to an information presentation apparatus and an information display apparatus, and more particularly to information presentation apparatus and display apparatus suitable for use in a system having a large screen display apparatus and a small screen display apparatus.
Recently, the information presentation using a display apparatus with a large display screen (including a mimic display apparatus) has been practiced or planned in the operation control in a power generation plant or a chemical plant, , the information presentation in a financial organization or a securities organization, and the presentation in a conference. It has been desired to be able to remotely designate information to be displayed on a large screen display apparatus and provide information to the designated object to be displayed.
As technologies to cope with such a demand, a pointing device apparatus and an input method disclosed in JP-A-3-179517 and a presentation apparatus disclosed in JP-A-4-37922 have been proposed.
In JP-A-3-179517, an infrared ray projector is used to remotely point a display screen of a large screen display apparatus, the pointing point is detected based on an output signal from a monitor camera which monitors the display screen, and a marker indicating the pointing of that point is displayed on the large screen display apparatus. Further, an entered command is executed by using separately provided command execution means for the pointed object to be displayed.
In JP-A-4-37922, a desired area on an image projected on a screen or wall is pointed by a pointing bar with a light emitter, the pointing area is detected based on an output signal of a video camera which monitors the screen and the image information is changed.
JP-A-4-123122 discloses an input apparatus having a sensor, an electronic equipment and a display device. In this input apparatus, as shown in 4, a piano keyboard, for example, is displayed on the display device by using a floppy disk which stores game software. A user who wants to play a piano attaches a pointer on each of his/her fingers and moves his/her fingers in accordance with the key positions. Each pointer outputs a light of different wavelength. The sensor senses each of the light emitting positions of the lights of different wavelengths and displays it as a cursor on the display screen of the display device. The cursor is displayed on the keyboard as the finger of the player moves so that a sound corresponding to the key is generated. Such processing is effected by a computer. For example, when three fingers are moved to display cursors simultaneously at keys do, mi and so, harmonic sound of do, mi and so is generated.
In the techniques disclosed in JP-A-3-17951 and JP-A-4-37922, a single pointer (infrared ray projector or pointing bar) is used. When a plurality of such pointers are used, it is not possible to identify which pointer points which area on the display screen. Accordingly, it is not possible to use a plurality of pointers to cause the pointing area or object to discriminately execute the command.
JP-A-4-123122 solves the above problem by using a plurality of pointers which output different pointing signals (different wavelengths). Namely, a pointer which points a key is detected by detecting the wavelength of the light. A sound of the key pointed by the discriminated pointer is outputted. However, since the light outputted from the pointer is directly detected, the key pointed by the pointer cannot be precisely designated by the keyboard displayed on the display device. As a result, the information requested by the pointing by the pointer cannot be precisely provided in a simple manner.
SUMMARY OF THE INVENTION
It is a first object of the present invention to provide an information presentation apparatus capable of presenting designated information even when a plurality of pointers are used.
It is a second object of the present invention to provide an information presentation apparatus which improves user operability in acquiring information.
It is a third object of the present invention to provide an information presentation apparatus which can precisely present information relating to an object to be displayed pointed by each pointer even when a plurality of pointers are used.
It is a fourth object of the present invention to provide an information display apparatus which improves user operability in acquiring information.
It is a fifth object of the present invention to provide an information display apparatus which can readily generate position calibration information which reflects a distortion due to an install position of image pickup means and an aberration of a lens system of the image pickup means.
It is a sixth object of the present invention to provide an information display apparatus which can reduce the affect of the distortion due to the install position of the image pickup means and the aberration of the lens system of the image pickup means to precisely determine the pointing point.
The first object is achieved by providing a display device, a plurality of pointers having different pointing signals from each other for pointing a display screen of said display device by the pointing signal, identification means for identifying said pointer, object specifying means for specifying an object to be displayed displayed on said display screen, and output means for outputting the identification information of the pointer and the information derived based on the specified object to be displayed.
The second object is achieved by providing display devices, a plurality of pointers having different pointing signals from each other for pointing a display screen of said display device by the pointing signa, image pickup means for picking up an image of said display screen to output an image signal, identification means for identifying the pointer which points said display screen, object specifying means for specifying an object to be displayed displayed on said display screen, display information selection means for selecting display information based on the information of the specified object to be displayed, and output means for generating the selected display information and outputting the display information to the display device corresponding the identified pointer.
The third object is achieved by providing a display device, means for detecting a pointing signal arriving onto a display screen of said display device, means for identifying a pointer which outputted the pointing signal based on the pointing signal detected by said detection means, object specifying means for specifying an object to be displayed displayed on said display screen, and output means for outputting the identification information for the pointer and the information derived based on the specified object to be displayed.
The pointer which outputs the pointing signal is identified based on the pointing signal arrived on the display screen of the display device and the object to be displayed displayed on the display screen, pointed by the pointing signal is specified. Accordingly, the identification of the pointers is readily made and the pointed object to be displayed can be precisely specified. Accordingly, the information on the object to be displayed, pointed for by each pointer can be readily and positively provided.
The fourth object is achieved by providing a display device,a plurality of pointers having different pointing signals from each other for pointing a display screen of said display device by the pointing signal, identification means for identifying said pointer, object specifying means for specifying an object to be displayed displayed on said display screen, and output means for outputting the identification information of the pointer and the information derived based on the specified object to be displayed.
In accordance with this feature, since the display device which displays the information is specified by the pointer, the information may be displayed on the display device corresponding
Arita Setsuo
Kaji Akira
Kawaguchi Koichi
Nagaoka Yukio
Ohga Yukiharu
Hitachi , Ltd.
Kenyon & Kenyon
Piziali Jeff
Shankar Vijay
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