公开(公告)号：CZ90093A3

公开(公告)日：1994-04-13

申请号：CS9009391

申请日：1991-10-29

Applicant: IBM ,  IBM DEUTSCHLAND

Inventor： BEATTIE IRENE ,  DESAI NARENDRA M ,  VANOVER MICHAEL TERRELL ,  VOLTIN JOHN ALVIN

IPC: G06F3/14 ,  G06T11/00 ,  G09G5/06 ,  G09G5/14

Abstract: A video display system selectively controls by window the number of overlay planes, the number of overlay palettes, and the overlay/underlay plane masks in a graphics display. A logic/multiplex control 13, 11 translates overlay and underlay data patterns from a multiple plane VRAM 12, referenced to the graphics system frame buffer 9, into window specific patterns. The window related translation is conveyed to conventional RAMDACs 11 for raster scan synchronized digital-to-analog conversion. The translation as provided by the controller is responsive to data selectively and dynamicaliy written into a random access memory 14, thus providing translation of overlay/underlay data into window distinct and selective overlay/underlay palette functions.

公开(公告)号：CZ9300900A3

公开(公告)日：1994-04-13

申请号：CS9009391

申请日：1991-10-29

Applicant: IBM ,  IBM DEUTSCHLAND

Inventor： BEATTIE IRENE ,  DESAI NARENDRA M ,  VANOVER MICHAEL TERRELL ,  VOLTIN JOHN ALVIN

IPC: G06F3/14 ,  G06T11/00 ,  G09G5/06 ,  G09G5/14

CPC classification number: G09G5/14 ,  G09G5/06

公开(公告)号：CA2311432A1

公开(公告)日：2001-02-05

申请号：CA2311432

申请日：2000-06-13

Applicant: IBM

Inventor： RAO SEETHARAM G ,  PUDOTA RAJU B S ,  MISRA ASHUTOSH ,  DESAI NARENDRA M ,  MARION NEAL R

IPC: G06F3/14 ,  G09G5/08 ,  G06F3/033

Abstract: Smoother transitions between changing cursor images which are less stressful to the interactive user of a computer controlled display are provided by apparatus for changing the cursor image, including a frame buffer for storing the display screen image as a pixel array, a separate display buffer for storing the current cursor image as a pixel array, togeth er with apparatus for storing an alternate cursor image as a pixel array during the display of the current cursor image, and means for replacing the current cursor image with the alternate cursor image . In raster scan apparatus for maintaining screen images in the frame buffer on said display screen, there are means for effecting the replacement of said cursor images during a vertical blanki ng period in said raster scanning.

公开(公告)号：PL167318B1

公开(公告)日：1995-08-31

申请号：PL29893791

申请日：1991-10-29

Applicant: IBM

Inventor： BEATTIE IRENE ,  DESAI NARENDRA M ,  VANOVER MICHAEL T ,  VOLTIN JOHN A

IPC: G06T11/00 ,  G09G5/06 ,  G06F3/14 ,  G09G5/14

Abstract: A video display system selectively controls by window the number of overlay planes, the number of overlay palettes, and the overlay/underlay plane masks in a graphics display. A logic/multiplex control 13, 11 translates overlay and underlay data patterns from a multiple plane VRAM 12, referenced to the graphics system frame buffer 9, into window specific patterns. The window related translation is conveyed to conventional RAMDACs 11 for raster scan synchronized digital-to-analog conversion. The translation as provided by the controller is responsive to data selectively and dynamicaliy written into a random access memory 14, thus providing translation of overlay/underlay data into window distinct and selective overlay/underlay palette functions.

公开(公告)号：CA2053988C

公开(公告)日：1995-12-12

申请号：CA2053988

申请日：1991-10-22

Applicant: IBM

Inventor： BEATTIE IRENE ,  DESAI NARENDRA M ,  VANOVER MICHAEL T ,  VOLTIN JOHN A

IPC: G06F3/14 ,  G06T11/00 ,  G09G5/06 ,  G09G5/14

Abstract: Apparatus and methods for selectively controlling by window the number of overlay planes, the number of overlay palettes, and the overlay/underlay plane masks in a graphics video display system. A logic/multiplex control translates overlay and underlay data patterns from a multiple plane VRAM, referenced to the graphics system frame buffer, into window specific patterns. The window related translation is conveyed to conventional RAMDACs for raster scan synchronized digital-to-analog conversion. The translation as provided by the controller is responsive to data selectively and dynamically written into a random access memory, thus providing translation of overlay/underlay data into window distinct and selective overlay/underlay palette functions.

公开(公告)号：SK46493A3

公开(公告)日：1993-09-09

申请号：SK46493

申请日：1991-10-29

Applicant: IBM

Inventor： BEATTIE IRENE ,  DESAI NARENDRA M ,  VANOVER MICHAEL T ,  VOLTIN JOHN A

IPC: G06T11/00 ,  G09G5/06 ,  G06F3/14 ,  G09G5/14

Abstract: A video display system selectively controls by window the number of overlay planes, the number of overlay palettes, and the overlay/underlay plane masks in a graphics display. A logic/multiplex control 13, 11 translates overlay and underlay data patterns from a multiple plane VRAM 12, referenced to the graphics system frame buffer 9, into window specific patterns. The window related translation is conveyed to conventional RAMDACs 11 for raster scan synchronized digital-to-analog conversion. The translation as provided by the controller is responsive to data selectively and dynamicaliy written into a random access memory 14, thus providing translation of overlay/underlay data into window distinct and selective overlay/underlay palette functions.

公开(公告)号：DE69109241T2

公开(公告)日：1995-11-02

申请号：DE69109241

申请日：1991-10-14

Applicant: IBM

Inventor： BEATTIE IRENE ,  DESAI NARENDRA M ,  VANOVER MICHAEL TERRELL ,  VOLTIN JOHN ALVIN

IPC: G06F3/14 ,  G06T11/00 ,  G09G5/06 ,  G09G5/14

Abstract: A video display system selectively controls by window the number of overlay planes, the number of overlay palettes, and the overlay/underlay plane masks in a graphics display. A logic/multiplex control 13, 11 translates overlay and underlay data patterns from a multiple plane VRAM 12, referenced to the graphics system frame buffer 9, into window specific patterns. The window related translation is conveyed to conventional RAMDACs 11 for raster scan synchronized digital-to-analog conversion. The translation as provided by the controller is responsive to data selectively and dynamicaliy written into a random access memory 14, thus providing translation of overlay/underlay data into window distinct and selective overlay/underlay palette functions.

公开(公告)号：DE69109241D1

公开(公告)日：1995-06-01

申请号：DE69109241

申请日：1991-10-14

Applicant: IBM

Inventor： BEATTIE IRENE ,  DESAI NARENDRA M ,  VANOVER MICHAEL TERRELL ,  VOLTIN JOHN ALVIN

IPC: G06F3/14 ,  G06T11/00 ,  G09G5/06 ,  G09G5/14

Abstract: A video display system selectively controls by window the number of overlay planes, the number of overlay palettes, and the overlay/underlay plane masks in a graphics display. A logic/multiplex control 13, 11 translates overlay and underlay data patterns from a multiple plane VRAM 12, referenced to the graphics system frame buffer 9, into window specific patterns. The window related translation is conveyed to conventional RAMDACs 11 for raster scan synchronized digital-to-analog conversion. The translation as provided by the controller is responsive to data selectively and dynamicaliy written into a random access memory 14, thus providing translation of overlay/underlay data into window distinct and selective overlay/underlay palette functions.

公开(公告)号：CA2053988A1

公开(公告)日：1992-05-16

申请号：CA2053988

申请日：1991-10-22

Applicant: IBM

Inventor： BEATTIE IRENE ,  DESAI NARENDRA M ,  VANOVER MICHAEL T ,  VOLTIN JOHN A

IPC: G06F3/14 ,  G06T11/00 ,  G09G5/06 ,  G09G5/14

Abstract: A video display system selectively controls by window the number of overlay planes, the number of overlay palettes, and the overlay/underlay plane masks in a graphics display. A logic/multiplex control 13, 11 translates overlay and underlay data patterns from a multiple plane VRAM 12, referenced to the graphics system frame buffer 9, into window specific patterns. The window related translation is conveyed to conventional RAMDACs 11 for raster scan synchronized digital-to-analog conversion. The translation as provided by the controller is responsive to data selectively and dynamicaliy written into a random access memory 14, thus providing translation of overlay/underlay data into window distinct and selective overlay/underlay palette functions.

公开(公告)号：CA2311432C

公开(公告)日：2007-10-16

申请号：CA2311432

申请日：2000-06-13

Applicant: IBM

Inventor： MISRA ASHUTOSH ,  DESAI NARENDRA M ,  MARION NEAL R ,  PUDOTA RAJU B S ,  RAO SEETHARAM G

IPC: G06F3/14 ,  G09G5/08

Abstract: Smoother transitions between changing cursor images which are less stressful to the interactive user of a computer controlled display are provided by apparatus for changing the cursor image, including a frame buffer for storing the display screen image as a pixel array, a separate display buffer for storing the current cursor image as a pixel array, togeth er with apparatus for storing an alternate cursor image as a pixel array during the display of the current cursor image, and means for replacing the current cursor image with the alternate cursor image . In raster scan apparatus for maintaining screen images in the frame buffer on said display screen, there are means for effecting the replacement of said cursor images during a vertical blanki ng period in said raster scanning.