公开(公告)号：US11361017B1

公开(公告)日：2022-06-14

申请号：US16929858

申请日：2020-07-15

Applicant: Roku, Inc.

Inventor： Sunil Suresh Kulkarni ,  Pradipkumar Dineshbhai Gajjar ,  Jose Pio Pereira ,  Preshant Ramanathan ,  Mihailo M. Stojancic ,  Shashank Merchant

IPC: G06F16/45 ,  G06F16/48 ,  G06F16/906 ,  G06F16/44

Abstract: Techniques are described that exclude use of “stop-fingerprints” from media database formation and search query to an automatic content recognition (ACR) systems based on media content fingerprints updated by stop-fingerprint analysis. A classification process is presented which takes in fingerprints from reference media files as an input and produces a modified set of fingerprints as an output by applying a novel stop-fingerprint classification algorithm. Architecture for the distributed stop-fingerprint generation is presented. Various cases, as stop-fingerprints generation for the entire reference database, stop-fingerprints generation for the individual reference fingerprint files, and temporal fingerprint classification obtained through intermediate steps of the temporal fingerprint classification algorithm are presented. A hash-based signature classification algorithm is also described.