Invention Grant
- Patent Title: Apparatus for transmitting video stream, apparatus for receiving video stream, method for transmitting video stream, and method for receiving video stream
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Application No.: US14803990Application Date: 2015-07-20
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Publication No.: US09432705B2Publication Date: 2016-08-30
- Inventor: Jongyeul Suh , Kookyeon Kwak , Jinpil Kim , Jeehyun Choe , Hotaek Hong
- Applicant: LG ELECTRONICS INC.
- Applicant Address: KR Seoul
- Assignee: LG ELECTRONICS INC.
- Current Assignee: LG ELECTRONICS INC.
- Current Assignee Address: KR Seoul
- Agency: Dentons US LLP
- Main IPC: H04N5/38
- IPC: H04N5/38 ; H04N21/2343 ; H04N21/845 ; H04N7/01 ; H04N21/236 ; H04N21/434 ; H04N21/2362 ; H04N7/12 ; H04N19/40 ; H04N19/59

Abstract:
The present invention provides an apparatus for transmitting a video stream, an apparatus for receiving a video stream, a method for transmitting a video stream, and a method for receiving a video stream. One embodiment of the present invention, discloses the method for transmitting the video stream, comprising the steps of: down-sampling a UHD (ultra high definition) video stream to divide the UHD video stream into a sub-stream of a viewable HD compatible video, a sub-stream of an HD-sized video, and a sub-stream of a residual signal as a difference between the HD compatible video and the HD-sized video, and encoding the divided sub-streams; multiplexing signaling information for describing the relationship between the UHD video stream and at least one sub-stream and including the sub-stream; and transmitting the multiplexed HD sub-stream and the signaling information.
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