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. 17, 2020
Filed:
Sep. 02, 2014
Apple Inc., Cupertino, CA (US);
Charles F. Dominguez, Redwood City, CA (US);
Ashima Kapur, San Jose, CA (US);
Kiran Kattel, San Francisco, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
An electronic device may include an applications processor that communicates with a peripheral input-output (I/O) device using a coprocessor. The applications processor may include a first interprocessor communications (IPC) module, whereas the coprocessor may include a second IPC module for interfacing with the first IPC module. The first IPC module may forward a group of transactions to a submission queue and may ring a submission doorbell interrupt to signal that work items are pending in the submission queue. In response, the second IPC module may dequeue the work items from the submission queue and process these items at the I/O device. The second IPC module may provide a group of completed transactions to a completion queue and may ring a completion doorbell interrupt to signal that items are pending in the completion queue. Thereafter, the completed items are forwarded to other parts of the applications processor for processing.