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.

Date of Patent:
May. 06, 2025

Filed:

Oct. 10, 2022
Applicant:

Rambus Inc., San Jose, CA (US);

Inventors:

Mark D. Kellam, Siler City, NC (US);

Dongyun Lee, Sunnyvale, CA (US);

Thomas Vogelsang, Mountain View, CA (US);

Steven C. Woo, Saratoga, CA (US);

Assignee:

Rambus inc., San Jose, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 6/293 (2005.12); G02B 6/12 (2005.12); H04B 10/50 (2012.12);
U.S. Cl.
CPC ...
G02B 6/2938 (2012.12); G02B 6/12007 (2012.12); H04B 10/506 (2012.12);
Abstract

Command/address and timing information is distributed to buffer integrated circuits on a module using multiple wavelengths of light modulated with the same information. Each individual wavelength of modulated light carrying command/address information is received by a corresponding single buffer device that deserializes the command/address information and communicates it electrically to memory devices(s). Likewise, each individual wavelength of modulated light carrying timing/synchronization/clock information is received by a corresponding single buffer device and used to synchronize accesses to the memory device(s). Thus, multiple buffer integrated circuits on a module each receive information from the CPU using different wavelengths of light transmitted on the same waveguide.


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