Electronic apparatus and control method thereof

Patent metadata

Field	Value
Publication number	US-2021127158-A1
Application number	US-202017033057-A
Country	US
Kind code	A1
Filing date	Sep 25, 2020
Priority date	Oct 29, 2019
Publication date	Apr 29, 2021
Grant date	—

Abstract

An electronic apparatus and a method of controlling the same are provided. The electronic apparatus includes a communication interface and a processor configured to receive multimedia data from an external apparatus, obtain a first finger print of first frames among a plurality of frames included in the multimedia data, the first frames being included in a first time interval, and transmit the first finger print to the server; identify whether a content in the multimedia data has been changed and a time point indicating a time of identifying a change in the content; based on identifying that the content has been changed, obtain a second finger print of a frame corresponding to the time point, and transmit the second finger print to the server; receive content information corresponding to the second finger print, and determine whether to change the first time interval based on the content information.

First claim

What is claimed is:

1 . An electronic apparatus comprising:
a communication interface configured to communicate with an external apparatus and a server; and a processor configured to:
receive multimedia data from the external apparatus through the communication interface,
obtain a first finger print of first frames among a plurality of frames included in the multimedia data, the first frames being included in a first time interval, and control the communication interface to transmit the first finger print to the server,
identify whether a content in the multimedia data has been changed and a time point indicating a time of identifying a change in the content,
based on identifying that the content in the multimedia data has been changed, obtain a second finger print of a frame corresponding to the time point, and control the communication interface to transmit the second finger print to the server,
receive, from the server, content information corresponding to the second finger print through the communication interface and
determine whether to change the first time interval based on the content information.

2 . The electronic apparatus of claim 1 , wherein the processor is further configured to:
based on the content information received from the server being first content information, obtain a third finger print of second frames among the plurality of frames in a second time interval, the second time interval being greater than the first time interval after the time point and control the communication interface to transmit the third finger print to the server.

3 . The electronic apparatus of claim 2 , wherein the processor is further configured to:
control the communication interface to transmit the third finger print and first search subject information of the third finger print to the server, and wherein the first search subject information is information indicating that search subjects are a plurality of databases corresponding to different content types.

4 . The electronic apparatus of claim 3 , wherein the processor is further configured to:
based on the content information received from the server being the first content information corresponding to the second finger print, obtain a fourth finger print of at least one frame among the second frames in the second time interval, control the communication interface to transmit the fourth finger print and second search subject information of the fourth finger print to the server, and wherein the second search subject information is information indicating that the search subjects are some of the plurality of databases.

5 . The electronic apparatus of claim 4 , wherein the processor is further configured to:
receive information on an ending point of the changed content from the server through the communication interface, and identify that the content has been changed based on the information on the ending point.

6 . The electronic apparatus of claim 4 , wherein the first search subject information includes information indicating that the search subjects are at least one of a live content database, a commercial content database, a digital video recorder (DVR) content database, or a video on demand (VOD) content database, and
wherein the second search subject information includes information indicating that one of the search subjects is the commercial content database.

7 . The electronic apparatus of claim 2 , wherein the first content information includes information indicating that a type of the content is a live content and information indicating that a number of channels providing the content is one.

8 . The electronic apparatus of claim 1 , wherein the processor is further configured to:
based on at least one of an on screen display (OSD), a mute, or a predetermined screen being identified from the multimedia data, identify that the content corresponding to the multimedia data has been changed.

9 . The electronic apparatus of claim 1 , wherein the processor is further configured to:
based on the content information received from the server being second content information, maintain the first time interval of obtaining the first finger print.

10 . The electronic apparatus of claim 9 , wherein the second content information includes information indicating that a type of the content is a content excluding a live content or information indicating that there are a plurality of channels providing the content.

11 . A control method of an electronic apparatus, the method comprising:
receiving multimedia data from an external apparatus; obtaining a first finger print of first frames among a plurality of frames included in the multimedia data, the first frames being included in a first time interval, and transmitting the first finger print to a server; identifying whether a content in the multimedia data has been changed and a time point indicating a time of identifying a change in the content; based on identifying that the content in the multimedia data has been changed, obtaining a second finger print of a frame corresponding to the time point, and transmitting the second finger print to the server; receiving, from the server, content information corresponding to the second finger print; and determining whether to change the first time interval based on the content information.

12 . The control method of claim 11 , wherein the determining further comprises:
based on the content information received from the server being first content information, obtaining a third finger print of second frames among the plurality of frames in a second time interval, the second time interval being greater than the first time interval after the time point and transmitting the third finger print to the server.

13 . The control method of claim 12 , wherein the determining further comprises:
transmitting the third finger print and first search subject information of the third finger print to the server, and wherein the first search subject information is information indicating that search subjects are a plurality of databases corresponding to different content types.

14 . The control method of claim 13 , wherein the determining further comprises:
based on the content information received from the server being the first content information corresponding to the second finger print, obtaining a fourth finger print of at least one frame among the second frames in the second time interval; and transmitting the fourth finger print and second search subject information of the fourth finger print to the server, and wherein the second search subject information is information indicating that the search subjects are some of the plurality of databases.

15 . The control method of claim 14 , wherein the determining further comprises:
receiving information on an ending point of the changed content from the server, and wherein the identifying whether the content in the multimedia data has been changed further comprises: identifying that the content has been changed based on the information on the ending point.

16 . The control method of claim 14 , wherein the first search subject information includes information indicating that the search subjects are at least one of a live content database, a commercial content database, a digital video recorder (DVR) content database, or a video on demand (VOD) content database, and
wherein the second search subject information includes information indicating that one of the search subjects is the commercial content database.

17 . The control metho

Assignees

• Samsung Electronics Co Ltd

Inventors

• Choi Hyunsoo
• Kim Younguk
• Kim Hyunhan
• Kim Hyosang
• Kim Sungjin
• Lee Jaewoo
• Joh Jongmyoung

Classifications

• G06V40/1365

  Matching; Classification · CPC title

• H04N21/8456

  by decomposing the content in the time domain, e.g. in time segments · CPC title

• H04N21/8455

  involving pointers to the content, e.g. pointers to the I-frames of the video stream · CPC title

• H04N21/44008 Primary

  involving operations for analysing video streams, e.g. detecting features or characteristics in the video stream (arrangements characterised by components specially adapted for monitoring, identification or recognition of video in broadcast systems H04H60/59) · CPC title

• H04N21/4353

  involving decryption of additional data (arrangements using cryptography for the use of broadcast information or broadcast-related information H04H60/23) · CPC title