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:
Sep. 15, 2009
Filed:
Jul. 14, 2004
Frederick Christopher Candler, Etobicoke, CA;
Frederick Christopher Candler, Etobicoke, CA;
Integrated Device Technology, inc., San Jose, CA (US);
Abstract
A cache memory method and corresponding system for two-dimensional data processing, and in particular, two-dimensional image processing with simultaneous coordinate transformation is disclosed. The method uses a wide and fast primary cache memory (PCM) and a deep secondary cache memory (SCM), each with multiple banks to access data simultaneously. A dedicated pre-fetching logic is used to obtain pixel data from an external memory upon receiving control parameters from an external processor system (PU), and to store that data in the PCM based on a secondary control queue. The data are then prepared in specific block sizes and in specific format, and then stored in the PCM based on optimally sized pre-fetching primary control queue. The prepared data are then read by another external processor system (PU) for processing. The cache control logic ensures the coherency of data and control parameters at the input of the PU
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