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:
Aug. 24, 2004
Filed:
Sep. 26, 2000
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
An array boundary checking method is disclosed for providing hardware based array boundary checking in a Java environment. During the first machine cycle of a current array access command, an array reference value is loaded into a system-data address controller and an array boundary checker. Next, during the second machine cycle of the current array access command, an array index value is written to the system-data address controller and the array boundary checker. Also during the second machine cycle of the current array access command, a maximum array index value is read from the Java array and written to the array boundary checker. The array boundary checker utilizes these values to determine the validity of the current array access command. Finally, during the third machine cycle an array value is accessed in memory. In the present invention the array value is only accessed when the current array access command is valid.