David C Barth

US Patent:

6795873, Sep 21, 2004

Filed:

Jun 30, 2000

Appl. No.:

09/607256

Inventors:

David M. Barth - Portland OR
Brian D. Nelson - Tigard OR

Assignee:

Intel Corporation - Santa Clara CA

International Classification:

G06F 300

US Classification:

710 15, 710 5, 710 10, 710 17, 710 18, 710 31, 710 58, 714 5, 714 47, 711219

Abstract:

The present invention provides a method and apparatus for a scheduling driver to implement a protocol using time estimates for use with a device that does not generate interrupts. An application calls the scheduling driver to start an Input/Output (I/O) request to a device. The scheduling driver determines if the device is busy. If the device is not busy, the scheduling driver provides an estimated processing time (EPT) for the I/O request to be completed to the application. In one embodiment, if the device is busy, the scheduling driver calculates an estimated amount of time left (EATL) until the device will be available to the application and provides this EATL to the application. When the device is not busy, the application sleeps for the estimated processing time (EPT) and calls the scheduling driver to obtain the I/O operation results. If the I/O request has been completed, the scheduling driver provides the I/O operation results to the application. However, if the I/O request has not been completed, the scheduling driver calculates an estimated processing time remaining (EPTR) for the I/O request to be completed and provides the EPTR to the application.

US Patent:

6802003, Oct 5, 2004

Filed:

Jun 30, 2000

Appl. No.:

09/608274

Inventors:

Mark T. Gross - Portland OR
David M. Barth - Portland OR
Richard P. Mangold - Forest Grove OR

Assignee:

Intel Corporation - Santa Clara CA

International Classification:

H04L 918

US Classification:

713175, 713201

Abstract:

Content is authenticated by generating signature certificates for content that has been successfully watermark screened. When a request is received for importation of content into a secured domain, a search is made in a signature certificates cache for a signature certificate associated with that requested content. If an identified signature certificate authenticates the requested content, the content is imported into the secured domain. If no signature certificate is identified, the content is watermark screened. If the content successfully passes the watermark screening process, a new signature certificate is then added to the signature certificate cache.

US Patent:

6802004, Oct 5, 2004

Filed:

Jun 30, 2000

Appl. No.:

09/608273

Inventors:

Mark T. Gross - Portland OR
David M. Barth - Portland OR
Richard P. Mangold - Forest Grove OR

Assignee:

Intel Corporation - Santa Clara CA

International Classification:

H04L 900

US Classification:

713176, 713161

Abstract:

A portable device receives content from a computer and a signature certificate. The signature certificate is derived from content after the content successfully passes a watermark screening process. The portable device compares the received signature certificate to the received content. The content is only played in the portable device when the received signature certificate authenticates the received content as passing the watermark screening process.