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. 12, 2003
Filed:
Oct. 29, 1999
Takashi Nanya, Kawasaki, JP;
Abstract
An asynchronous digital system, an asynchronous data path circuit, an asynchronous digital signal processing circuit and an asynchronous digital signal processing method, which enables improved processing speed while maintaining high reliability are provided by dividing the overall chip into blocks with a specified area, forming the connection between the blocks by applying thereto a delay insensitive (Dl) model or a quasi delay insensitive (QDI) model, while forming each block by applying thereto a scalable delay insensitive (SDI) model. In the SDI model, the system is configured using circuit components having a delay assumed during design in which if the specification states that a signal transition (b) in a subcircuit precedes a signal transition (c) in a subcircuit , &kgr;·Tab<Tac is established wherein Tab is the time from the occurrence of the signal transition (a) that is a common cause until the occurrence of the signal transition (b) and Tac is the time from the occurrence of the signal transition (a) until the occurrence of the signal transition (c). &kgr; is a constant that is defined to be a real number larger than 1.