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.:

US 7424562 B1

PDF
Full Text
Expired
Date of Patent:
Sep. 09, 2008

Filed:

Mar. 01, 2004
Applicants:

Udayakumar Srinivasan, Milpitas, CA (US);

Sampath Hosahally Kumar, San Jose, CA (US);

Dattatri N. Mattur, Sunnyvale, CA (US);

Madhu Rao, San Jose, CA (US);

Abhay Ujwal Bhorkar, San Jose, CA (US);

Inventors:

Udayakumar Srinivasan, Milpitas, CA (US);

Sampath Hosahally Kumar, San Jose, CA (US);

Dattatri N. Mattur, Sunnyvale, CA (US);

Madhu Rao, San Jose, CA (US);

Abhay Ujwal Bhorkar, San Jose, CA (US);

Assignee:

Cisco Technology, Inc., San Jose, CA (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 13/00 (2006.01); G06F 13/36 (2006.01); G06F 13/20 (2006.01);
U.S. Cl.
CPC ...
Abstract

A bridging device has at least two ports. The first port allows the device to communicate with devices on an expansion bus and at least one other port to allow the bridge to communicate with a system memory on a system bus or other devices on another expansion bus. The device is capable of identifying at least two regions in memory, a descriptor region and a data region. A descriptor provides information about segments of data in the data region. The bridge may detect descriptors read from the memory, extract information related to data associated with those descriptors and use this information to perform prefetching of data from the system memory.


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