The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 24, 1996
Filed:
Nov. 10, 1994
Robert P Gardyne, Oakland, CA (US);
LSI Logic, Inc., Milpitas, CA (US);
Abstract
A display system displays a cursor on a monitor using parallel pixels of video data. A hardware cursor processor receives a sequence of clock signals, cursor data, parallel video data arranged in P logical pixels per clock signal, and cursor position data. The hardware cursor processor provides composite video data representative of the cursor data and the video data to a memory. The composite video data is arranged in P logical pixels per clock signal. The hardware cursor processor arranges the cursor data within the P logical pixels per clock signal in response to the cursor position data. The cursor position data includes a position signal HPOS indicative of the horizontal position of the cursor on the screen and includes a preset signal HPRE indicative of the horizontal offset of the cursor. The cursor data is arranged within the P logical pixels of the composite video data to begin at the logical pixel equal to [(HPOS-HPRE) modulus P]. A memory has an input coupled to the output of the hardware cursor processor and has an output for providing a digital video signal indicative of the video data and the cursor data. A digital-to-analog converter has an input coupled to the output of the memory for receiving the digital video signal and has an output coupled to the monitor for providing an analog signal indicative of the cursor data and the video data. The monitor has an input coupled to the output of the digital-to-analog converter for displaying the video data and the, cursor data in response to the analog signal.