US 2020/0029108 A1 · Establishment and Use of Time Mapping Based on Interpolation Using Low-Rate Fingerprinting, to Help Facilitate Frame-Accurate Content Revision

Abstract

A computing system identifies multiple matching points between (i) query fingerprints representing a media stream being received by a client and (ii) reference fingerprints, each identified matching point defining a respective match between a query fingerprint timestamped with client time defined according to a clock of the client and a reference fingerprint timestamped with true time defined according to a timeline within a known media stream. Further, the computing system performs linear regression based on the timestamps of the matching points, to establish a mapping between true time and client time. The computing system then uses the mapping to determine a client-time point at which the client should perform a content revision or other action with respect to the media stream being received by the client. And the computing system causes the client to perform the content revision or other action at the determined client-time point.

Claims20

Dependent claims

A method comprising:

receiving, by a computing system, query fingerprints representing a media stream that is being received by a client, the query fingerprints being timestamped with client time according to a clock of the client;
comparing by the computing system the received query fingerprints with reference fingerprints representing a known media stream, the reference fingerprints being timestamped with true time according to a timeline within the known media stream;
detecting, by the computing system, based on the comparing, a plurality of matching points each defining a match between a query fingerprint having an associated client-time timestamp and a reference fingerprint having an associated true-time timestamp;
performing by the computing system linear regression based on the detected matching points, the linear regression establishing a mapping between true time and client time;
applying by the computing system the established mapping as a basis to determine a client-time point at which the client should perform an action with respect to the media stream being received by the client;
and
causing the client to perform, at the determined client-time point, the action.

4 more elements

A computing system comprising:

a network communication interface through which to transmit and receive;
a processing unit;
non-transitory data storage;
and
program instructions stored in the non-transitory data storage and executable by the processing unit to cause the computing system to carry out operations including:
identifying a plurality of matching points between (i) query fingerprints representing a media stream being received by a media client and (ii) reference fingerprints, wherein each identified matching point defines a respective match between (i) a query fingerprint that is timestamped with client time defined according to a clock of the media client and (ii) a reference fingerprint that is timestamped with true time defined according to a timeline within a known media stream,
performing linear regression based on the timestamps of the identified plurality of matching points, the linear regression establishing a mapping between true time and client time,
using the established mapping as a basis to determine a client-time point at which the media client should perform a content revision in the media stream being received by the media client, and
causing the media client to perform, at the determined client-time point, the content revision.

6 more elements

A non-transitory computer readable medium storing instructions executable by a processing unit to carry out operations comprising:

identifying a plurality of matching points between (i) query fingerprints representing a media stream being received by a client and (ii) reference fingerprints, wherein each identified matching point defines a respective match between (i) a query fingerprint that is timestamped with client time defined according to a clock of the client and (ii) a reference fingerprint that is timestamped with true time defined according to a timeline within a known media stream;
performing linear regression based on the timestamps of the identified plurality of matching points, the linear regression establishing a mapping between true time and client time;
using the established mapping as a basis to determine a client-time point at which the client should perform a content revision in the media stream being received by the client;
and
causing the client to perform, at the determined client-time point, the content revision.

2 more elements

Dependencies are inferred from the claim text.

Establishment and Use of Time Mapping Based on Interpolation Using Low-Rate Fingerprinting, to Help Facilitate Frame-Accurate Content Revision

Life of this patent

Establishment and Use of Time Mapping Based on Interpolation Using Low-Rate Fingerprinting, to Help Facilitate Frame-Accurate Content Revision

Life of this patent

Abstract

Claims20