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:
Jan. 22, 2008
Filed:
Mar. 30, 2005
Douglas Sullivan, Hopkinton, MA (US);
Brandon Barney, Hudson, MA (US);
Douglas Sullivan, Hopkinton, MA (US);
Brandon Barney, Hudson, MA (US);
EMC Corporation, Hopkinton, MA (US);
Abstract
Boards in a system are interconnected by a first set of signals including a first control signal and first function signals. Each board in the system includes a second set of signals corresponding to the first set of signals. When the first control signal and a first function signal are asserted, the corresponding second signals of are asserted in response and a function is performed on the boards. But, if any of the second signals are asserted, none of the first signals is asserted in response. Test signals on boards are thereby isolated from test signals coupled to all the boards on the system, so a fault on any signal in any second set of signals will not propagate to the first set of signals.