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. 04, 2025
Filed:
Jun. 12, 2023
Amazon Technologies, Inc., Seattle, WA (US);
Amazon Technologies, Inc., Seattle, WA (US);
Abstract
Embodiments of a privacy preserving supplemental content server (PPSCS) implements a privacy preserving protocol with a content server that requests the PPSCS to serve supplemental content for users. In embodiments, a user-to-segment map (USM) containing user-private information is split into secret shares and stored separately at the PPSCS and the content server. When servicing a request, the USM data is used to identify a key segment of a user, which is in turn used to select a supplemental content for the user. Advantageously, the selection process is performed according to the privacy preserving protocol, which guarantees that (a) the content server does not learn any user-private information about the user in the USM, (b) the PPSCS learns at most one user segment of the user (e.g. the key segment), and (c) the PPSCS cannot track the user over time using any user-private information about the user learned during the execution.