US 9,854,301 B2Granted

Video transmission system and video receiver

AssigneeMedia Global Links Co., Ltd.

InventorsKazunori Nakamura, Kazuki Narita

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Abstract

Provided are a video-signal switching method and a video receiver having two functions: a switching function between video signals in a currently-active system and in a backup system; and a switching function between two different videos. The present invention provides a video transmission system including video transmitters, a network connected to the video transmitters, and a video receiver connected to the network and configured to receive video streams of two IP-packetized video contents from the video transmitters. The video receiver has: a function of switching from an outputting video stream, which is continuously received but no longer receivable, to the other video stream of the same video content; and functions of stopping receiving one of the two video streams from the video transmitters, receiving the other video stream having a different video content, and switching the outputting video stream to the other video stream thus received.

Claims5

Dependent claims

A video transmission system comprising:

one or more video transmitters configured to:
transmit a first video stream that is one of two video streams to which a first video content is IP-packetized;
transmit a second video stream that is another one of the two video streams to which the first video content is IP-packetized;
and
in response to an indication for switching the first video content to a second video content:
stop transmitting the second video stream;
and
transmit a third video stream that is one of two video streams to which the second video content is IP-packetized;
and
a video receiver configured to:
receive the first video stream;
store the first video stream in one or more buffers;
receive the second video stream;
store the second video stream in the one or more buffers;
select and output one of the first video stream and the second video stream that are stored in the one or more buffers;
receive the third video stream;
store the third video stream in the one or more buffers;
and
switch the first video content to the second video content by stopping outputting the first video stream stored in the one or more buffers and outputting the third video stream stored in the one or more buffers.

16 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/258,532Filed 7 Sep 2016
Priority: JP 2015-1780129 Sep 2015
Published: US 2017/0070772 A19 Mar 2017
Granted: 26 Dec 2017
Term ends: Not estimatedThe source records don’t support an estimate.

Classification12 codes

H04N 21/4383
Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP…
H04N 21/23406
Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs: involving management of…
H04N 21/2404
Monitoring of processes or resources, e.g. monitoring of server load, available bandwidth, upstream requests: monitoring of server processing…
H04N 21/44004
Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering…