US Patent 7512850 Checkpointing user design states in a configurable IC

Patent 7512850 was granted and assigned to Tabula (company) on March, 2009 by the United States Patent and Trademark Office.

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Patent

Patent attributes

Current Assignee

Tabula (company)

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7512850

Date of Patent

March 31, 2009

Patent Application Number

11375370

Date Filed

March 13, 2006

Patent Primary Examiner

‌

John P Trimmings

Patent abstract

Some embodiments provide a configurable integrated circuit (IC) that has several configurable circuits and several user design state (UDS) circuits. The UDS circuits store user-design state values. The configurable IC also includes a debug network communicatively coupled to the UDS circuits. The debug network is for retrieving the user-design state values of several UDS circuits at various stoppages of the operation of the IC without retrieving configuration data that is used to configure the configurable circuits of the IC. The retrieved user-design state values at each stoppage are used as the checkpointed state of the IC while debugging the IC. In some embodiments, the debug network allows the checkpointing of only certain portions of the configurable IC.

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