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. 29, 2004
Filed:
Sep. 08, 2000
Masafumi Takahashi, Kanagawa-ken, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A control section sets a value “1” to a first flip-flop when a core executes a halt instruction. An OR circuit halts to output the clock. When the detection section detects an occurrence of the exception request, the control section copies the value “1” of the first flip-flop to a second flip-flop and then sets the value “0” to the first flip-flop to restart the supply of the clock to the core through the circuit. When detecting that the value “1” is set in the second flip-flop, the core judges that the state of the core was in the halt state when the exception request occurred, the core returns to the halt state after the completion of the exception handling by executing the halt instruction. When the second flip-flop does not store the value “1”, the core executes an instruction next to the address of the halt instruction.