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:
May. 03, 2005
Filed:
Jul. 27, 2001
Alexander J Neudeck, Windsor, CO (US);
Alexander J Neudeck, Windsor, CO (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
DMA requests from at least one DMA channel with a higher priority than the floppy-disk controller are disabled for at least a portion of a write to floppy DMA operation that includes the transfer of the last byte. This helps ensure that DMA requests generated by the floppy-disk controller will be responded to in under 14 μS preventing an undetected underrun condition on systems with flawed floppy disk controllers from occurring. An estimate of when the last byte of a write to floppy DMA operation is going to be transferred is made. This estimate may be based upon a fixed interval from the start of the write operation. This estimate may also be based upon readings taken from the byte counter and of the DMA controller and the system timer.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile