Satish N Gupta

US Patent:

51131803, May 12, 1992

Filed:

Apr 20, 1988

Appl. No.:

7/183795

Inventors:

Satish Gupta - Peekskill NY
Steven P. Larky - New York NY
Alan W. Peevers - Peekskill NY
Joe C. St. Clair - Round Rock TX

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G09G 114

US Classification:

340747

Abstract:

A display control such as a virtual display adapter allows the advanced functions of a display controller to be utilized in a large area of memory in addition to the normal use in display memory. This large area of memory includes system memory, and efficient access to this large area of memory is permitted for normal system use. The display controller also functions with non-contiguous and non-resident bitmaps. The flexibility of demand-paged virtual memory is utilized for display tasks, as display bitmaps may be written to the large area of memory as well as the display memory.

US Patent:

49032178, Feb 20, 1990

Filed:

Feb 12, 1987

Appl. No.:

7/013843

Inventors:

Satish Gupta - Peekskill NY
Leon Lumelsky - Stamford CT
Marc Segre - Rhinebeck NY

Assignee:

International Business Machines Corp. - Armonk NY

International Classification:

G06F 1200

US Classification:

364521

Abstract:

A frame buffer memory organization which is capable of accessing a pixel aligned M by N array of contiguous pixels on the screen from a frame buffer memory constructed of an M by N array of memory chips by driving a common address bus to all the memory chips, and by driving N RAS wires horizontally across the memory chip array and M CAS wires vertically down the memory chip array. The writing of individual pixels in this array is enabled by energizing the write enable pins to each memory chip directly. The data wires in the memory organization are tied together such that M horizontal pixels in a single row can be read or written simultaneously. Additionally, all M and N pixels may be written simultaneously if the data in all vertical columns is the same. The frame buffer includes a selectively energizable plane mask for disabling desired planes of accessed pixels. By sequentially controlling the output enables to the different rows of the addressed M by N array, the frame buffer can provide rapid access to N-1 rows after normally accessing the first one.

US Patent:

56338430, May 27, 1997

Filed:

Jul 24, 1995

Appl. No.:

8/506285

Inventors:

Satish Gupta - Pleasantville NY
Kiyoshi Maruyama - Chappaqua NY
Steven E. Millman - Spring Valley NY
Chung-Wai Yue - Yorktown Heights NY
Halil B. Bakoglu - Montesereno CA

Assignee:

International Business Machines, Corporation - Armonk NY

International Classification:

G11B 700

US Classification:

369 32

Abstract:

A self-contained CD-ROM player which can be installed and used as simply as a VCR. The CD-ROM player includes a CD-ROM drive and supporting hardware and software to activate and execute a program on a CD-ROM disk. It is not necessary to explicitly issue commands to activate and use the disk. The user interface is completely intuitive and simple even for someone who is completely computer illiterate. This player allows everyone, both proficient computer users and those not so proficient, to use the vast library of CD-ROM programs that have been written for personal computers.

US Patent:

50653687, Nov 12, 1991

Filed:

May 16, 1989

Appl. No.:

7/352442

Inventors:

Satish Gupta - Peekskill NY
Randall L. Henderson - West Hurley NY
Nathan R. Hiltebeitel - South Burlington VT
Robert Tamlyn - Jericho VT
Steven W. Tomashot - Jericho VT
Todd Williams - Essex Junction VT

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G11C 800

US Classification:

36523005

Abstract:

An implementation of a serial access memory register that facilitates the selecting from two alternate frame buffers on a per pixel basis. The frame buffers are each stored in a portion of a row in a single video RAM. Following data transfer to the serial access memory register, data from each of the two frame buffers is available. A double buffer select signal controls the selection of which half of the serial access memory register will put data on the output bus for each serial clock signal. The serial clock increments the address pointers in both halves of the serial access memory port simultaneously.

US Patent:

48704067, Sep 26, 1989

Filed:

Feb 12, 1987

Appl. No.:

7/013842

Inventors:

Satish Gupta - Peekskill NY
Leon Lumelsky - Stamford CT
Robert L. Mansfield - Austin TX
Hector G. Romero - Austin TX
Marc Segre - Rhinebeck NY
Alexander K. Spencer - Austin TX
Joe C. St. Clair - Round Rock TX
James D. Wagoner - Georgetown TX

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G09G 128

US Classification:

340 70

Abstract:

A display adapter for displaying graphics data in pixel form on a high resolution display monitor includes a digital signal processor for managing adapter resources and controlling coordinate transformations, a system storage which is divided into a first portion for storing instructions for the digital signal processor and the second portion for storing data representing information to be displayed, an input buffer for permitting asynchronous and overlapped communication between the graphics display adapter and a host computer to speed operation of the system, a pixel processor for drawing vectors and manipulating areas to be displayed on the monitor, a bit mapped frame buffer, a color palette connected to outputs of the frame buffer for providing appropriate color signals to the high resolution monitor and a cursor circuit for controlling display of a cursor on the screen on the monitor.