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:
Nov. 16, 2021
Filed:
Sep. 30, 2019
Apple Inc., Cupertino, CA (US);
Karan Sanghi, San Jose, CA (US);
Saurabh Garg, San Jose, CA (US);
Vladislav V. Petkov, Campbell, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
Methods and apparatus for reducing bus overhead with virtualized transfer rings. The Inter-Processor Communications (IPC) bus uses a ring buffer (e.g., a so-called Transfer Ring (TR)) to provide Direct Memory Access (DMA)-like memory access between processors. However, performing small transactions within the TR inefficiently uses bus overhead. A Virtualized Transfer Ring (VTR) is a null data structure that doesn't require any backing memory allocation. A processor servicing a VTR data transfer includes the data payload as part of an optional header/footer data structure within a completion ring (CR).