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:
Jun. 13, 2006
Filed:
Jan. 19, 2001
Applicants:
Alan R Poulter, Elstow, GB;
Quang T Tran, Hemel Hempstead, GB;
Sharon L Wiles, Bovingdon, GB;
David J Law, Kempston, GB;
Christopher a Walker, Watford, GB;
Inventors:
Alan R Poulter, Elstow, GB;
Quang T Tran, Hemel Hempstead, GB;
Sharon L Wiles, Bovingdon, GB;
David J Law, Kempston, GB;
Christopher A Walker, Watford, GB;
Assignee:
3Com Corporation, Santa Clara, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 15/173 (2006.01);
U.S. Cl.
CPC ...
Abstract
A control device for a unit in a cascade connection of network units includes control logic which increments a count of active units and passes the count to the next control device. The count is initiated and terminated by an absence of control messages at the down port and up port respectively. The incremented count is passed up the cascade and a final count is passed down the cascade.