Hardware that rotates an image for portrait-oriented display

Details Hardware that rotates an image for portrait-oriented display Hardware that rotates an image for portrait-oriented display

1998-03-06

1999-09-21

Tung, Kee M.

Computer graphics processing and selective visual display system

Computer graphic processing system

Integrated circuit

345501, 345516, 345437, 345126, 382297, G06F 1206

Patent

active

059560495

ABSTRACT:
A system for translating a portrait-oriented software address to a portrait-oriented yet landscape-configured display address. The system includes a central processing unit (CPU), a display device and an address translation system. The CPU generates a software address. Based on the orientation of the display device, the address translation system either passes the software address "as is" or translates the address to represent a portrait-oriented display address. The address translation system translates according to the functions L=in (H.sub.D)/in 2 and M=in (W.sub.D)/in 2, wherein H.sub.D is the landscape-oriented display device pixel height and W.sub.D is the landscape-oriented display device pixel width. L represents the number of least significant software address bits to translate as most significant physical address bits, and M represents the number of most significant software address bits to invert and translate as least significant physical address bits. The resulting address represents a pixel location on the display device which has been rotated counter-clockwise ninety degrees for portrait orientation.

REFERENCES:
patent: 4716533 (1987-12-01), Ohmori
patent: 4776026 (1988-10-01), Ueyama
patent: 4931960 (1990-06-01), Morikawa
patent: 4952920 (1990-08-01), Hayashi
patent: 5063526 (1991-11-01), Kagawa et al.
patent: 5133076 (1992-07-01), Hawkins et al.
patent: 5199101 (1993-03-01), Cusick et al.
patent: 5432720 (1995-07-01), Lucente et al.
patent: 5450542 (1995-09-01), Lehman et al.
patent: 5606348 (1997-02-01), Chin
patent: 5734875 (1998-03-01), Cheng

Affiliated with

Also associated with

Rating

Hardware that rotates an image for portrait-oriented display does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hardware that rotates an image for portrait-oriented display, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hardware that rotates an image for portrait-oriented display will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-84965