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:
Mar. 21, 2017
Filed:
Jan. 18, 2011
Kathirgamar Aingaran, Newton, MA (US);
Leslie D. Kohn, Saratoga, CA (US);
Robert C. Kunz, Sunnyvale, CA (US);
Jenn-yuan Tsai, Cupertino, CA (US);
Kathirgamar Aingaran, Newton, MA (US);
Leslie D. Kohn, Saratoga, CA (US);
Robert C. Kunz, Sunnyvale, CA (US);
Jenn-Yuan Tsai, Cupertino, CA (US);
Ambarella, Inc., Santa Clara, CA (US);
Abstract
An arbiter circuit and a translation circuit. The arbiter circuit may be configured to generate a first address signal in a virtual memory space by arbitrating among a plurality of clients to access a physical memory space. The clients may be classified as either privileged clients or non-privileged clients. The physical memory space may comprise at least one secure space. The secure space may be used to protect data of the privileged clients from being accessed by the non-privileged clients. The translation circuit may be configured to generate a second address signal by translating a page in the virtual memory space into the physical memory space. The page may correspond to a particular one of the clients that won the arbitration. The page may translate into the secure space if the particular client is one of the privileged clients. The page may also translate outside the secure space if the particular client is one of the non-privileged clients.