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:
Jul. 10, 2007
Filed:
Sep. 27, 2002
Menno Menasshe Lindwer, Eindhoven, NL;
Menno Menasshe Lindwer, Eindhoven, NL;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
Conditional branch bytecodes are processed by a Virtual Machine Interpreter (VMI) hardware accelerator that utilizes a branch prediction scheme to determine whether to speculatively process bytecodes while waiting for the CPU to return a condition control variable. The VMI assumes the branch condition will be fulfilled if a conditional branch bytecode calls for a backward jump and that the branch condition will not be fulfilled if a conditional branch bytecode calls for a forward jump. Alternatively, the VMI makes an assumption only if a conditional branch bytecode calls for a backward jump or the VMI assumes that the branch condition will be fulfilled whenever it processes a conditional branch bytecode. The VMI only speculatively processes bytecodes that are easily reversible, and suspends speculative processing of bytecodes upon encountering a bytecode that is not easily reversible. If a VMI assumption is invalidated, any speculatively processed bytecodes are reversed.