Device and method of handling multiple formats of a video sequence

Patent metadata

Field	Value
Publication number	US-10972767-B2
Application number	US-201816172900-A
Country	US
Kind code	B2
Filing date	Oct 29, 2018
Priority date	Nov 1, 2017
Publication date	Apr 6, 2021
Grant date	Apr 6, 2021

Abstract

A transmitter for handling multiple formats of a video sequence, comprises a preprocessing module, for receiving a first format of a video sequence, to generate metadata of a second format of the video sequence according to the first format of the video sequence and the second format of the video sequence; and an encoder, couple to the preprocessing module, for transmitting the first format of the video sequence and the metadata in a bit stream to a receiver.

First claim

What is claimed is:

1. A transmitter for handling multiple formats of a video sequence, comprising:
a preprocessing module, for receiving a first format of a video sequence, to generate metadata of a second format of the video sequence according to the first format of the video sequence and the second format of the video sequence, wherein the metadata provides additional information by describing a relation between the first format of the video sequence and the second format of the video sequence, and the first format of the video sequence is standard dynamic range (SDR), and the second format of the video sequence is high dynamic range (HDR); and
an encoder, couple to the preprocessing module, for transmitting the first format of the video sequence and the metadata in a bit stream to a receiver.

2. The transmitter of claim 1 , wherein the first format of the video sequence is generated by a video capturing device or an editing device.

3. The transmitter of claim 1 , wherein the preprocessing module generates the metadata of the second format of the video sequence according to the first format of the video sequence, the second format of the video sequence and a 3D lookup table.

4. A receiver for handling multiple formats of a video sequence, comprising:
a decoder, for receiving a bit stream comprising a first format of a video sequence and metadata of a second format of the video sequence from a transmitter, wherein the metadata provides additional information by describing a relation between the first format of the video sequence and the second format of the video sequence, and the first format of the video sequence is a first format of high dynamic range (HDR), and the second format of the video sequence is a second format of HDR; and
a postprocessing module, couple to the decoder, for generating the second format of the video sequence according to the metadata and the first format of the video sequence.

5. The receiver of claim 4 , wherein the first format of the video sequence is generated by a video capturing device or an editing device.

6. The receiver of claim 4 , wherein the postprocessing module generates the second format of the video sequence according to the metadata, the first format of the video sequence and a 3D lookup table.

7. A transmitter for handling multiple formats of a video sequence, comprising:
a preprocessing module, for receiving a first format of a video sequence, to generate metadata of a second format of the video sequence according to the first format of the video sequence and the second format of the video sequence, wherein the metadata provides additional information by describing a relation between the first format of the video sequence and the second format of the video sequence, and the first format of the video sequence is high dynamic range (HDR), and the second format of the video sequence is standard dynamic range (SDR); and
an encoder, couple to the preprocessing module, for transmitting the first format of the video sequence and the metadata in a bit stream to a receiver.

8. The transmitter of claim 7 , wherein the first format of the video sequence is generated by a video capturing device or an editing device.

9. The transmitter of claim 7 , wherein the preprocessing module generates the metadata of the second format of the video sequence according to the first format of the video sequence, the second format of the video sequence and a 3D lookup table.

Assignees

• Realtek Semiconductor Corp

Inventors

• Liu Lingzhi
• Liu Li
• Wang Jing
• Chen Wujun
• He Qingxi
• Pu Wei
• Zeng Weimin
• Chai Chi-Wang

Classifications

• H04N21/23439 Primary

  for generating different versions · CPC title

• H04N19/132

  Sampling, masking or truncation of coding units, e.g. adaptive resampling, frame skipping, frame interpolation or high-frequency transform coefficient masking · CPC title

• H04N19/33

  in the spatial domain · CPC title

• H04N19/176

  the region being a block, e.g. a macroblock · CPC title

• H04N19/40

  using video transcoding, i.e. partial or full decoding of a coded input stream followed by re-encoding of the decoded output stream · CPC title