Cursor display system

Details Cursor display system Cursor display system

1995-11-01

1996-10-22

Hjerpe, Richard

Computer graphics processing and selective visual display system

Display peripheral interface input device

Light pen for fluid matrix display panel

345126, 345157, G09G 336

Patent

active

055681646

ABSTRACT:
A cursor display system causes a cursor to move on a screen in the same direction as that of a pointing device, such as a mouse, operated by an operator viewing the screen, even if the display on the screen is inverted, i.e. turned round through 180 degrees. To display the cursor, which is moved by operating the pointing device, on a display device which is capable of inverting the display on the screen, a display status holding device is provided for memorizing whether the screen displayed on the display device is in a normal status or in the inverted status. The display status holding device is connected to a changeover device for changing data of operating directions supplied from the pointing device depending on the status memorized by the display status holding device. Further, a cursor position calculating device calculates a display position of the cursor to be displayed on the screen, based on data supplied via the changeover device from the pointing device to supply the display position to the display device.

REFERENCES:
patent: 5305397 (1994-04-01), Yamaguchi
N. Leon, Thumbwheel Positional Control Unit, IBM Technical Disclosure Bulletin, vol. 21, No. 7, Dec. 1978, pp. 3024-3025.
Patent Abstracts of Japan, vol. 14, No. 498 (P-1124), Oct. 30, 1990 & JP-A-02 204 783 (Victor Co. of Japan Ltd.), Aug. 14, 1990.
Patent Abstracts of Japan, vol. 16, No. 371 (P-1399, Aug. 10, 1992 & JP-A-04 116 716 (Matsushita Electric Ind. Co. Ltd.), Apr. 17, 1992.

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