Panning control device for controlling area of display image in

Details Panning control device for controlling area of display image in Panning control device for controlling area of display image in

1991-08-09

1994-07-19

Weldon, Ulysses

Computer graphics processing and selective visual display system

Display peripheral interface input device

Light pen for fluid matrix display panel

345133, G09G 106

Patent

active

053313356

ABSTRACT:
A panning control device includes a memory for storing image data, a display for displaying a part of the image data stored in the memory as a display image, and a pointing arrangement for pointing out a specific position of the display image displayed at the display. A panning control arrangement is also provided which is connected to the pointing arrangement, for calculating and outputting guide information concerning a display image to be displayed when the specific position pointed out by the pointing arrangement is placed at a center of the image displayed at the display. A display control arrangement is provided which is connected to the memory, the display, the pointing arrangement, and the panning control arrangement for controlling the display image at the display to conform to the guide information output from the panning control arrangement such that the guide information includes frame lines of the display image to be displayed and a travel indication line having one end at the specific position pointed out by the pointing arrangement and having its other end at another location on the display.

REFERENCES:
patent: 4532605 (1985-07-01), Waller
patent: 4602251 (1986-07-01), Sawada et al.
patent: 4794634 (1988-12-01), Torihata et al.
patent: 4880968 (1989-11-01), Kwang-Chien
patent: 4961072 (1990-10-01), Sekikawa
patent: 5075673 (1991-12-01), Yanker
patent: 5119081 (1992-06-01), Ikehira
"IMS G300 Colour Video Controller", inmos, preliminary data Nov. 1988, pp. 73-75, 85, 93-95.

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