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. 25, 2008
Filed:
Sep. 29, 2006
Jeffrey W. Spires, Salt Lake City, UT (US);
Ravi Subrahmanyan, Windham, NH (US);
Jeffrey W. Spires, Salt Lake City, UT (US);
Ravi Subrahmanyan, Windham, NH (US);
Applied Micro Circuits Corporation, San Diego, CA (US);
Abstract
A timeshared data tributary mapping system and method are provided for mapping information into Synchronous Payload Envelopes (SPEs). The method buffers data from a plurality of tributaries and stores current buffer-fill information at a rate of about one tributary per Fsys clock cycle. An accumulation of buffer-fill information for the plurality of tributaries is updated with current buffer-fill information every Fsys clock cycle. The accumulation of buffer-fill information for the plurality of tributaries is sampled at a sample rate frequency (Fsample), where Fsample<Fsys. The sampled buffer-fill information is used to calculate a data rate control word for each of the plurality of tributaries, and stuff bit opportunities are serially calculated responsive to the control word. The rate of data being mapped into outgoing tributaries is regulated, and the outgoing mapped tributaries are combined in a SPE.