US 12,192,477 B2Granted

Quantum parameter control and the method thereof

AssigneeSamsung Electronics Co., Ltd.

InventorsKyungil Lee, Bonggon Kim, Hansang Kim, Jungwon Lee

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Abstract

An electronic device is provided. The electronic device includes a memory and a processor operatively connected to the memory, wherein the processor may obtain a maximum allowable bit rate of the electronic device, determine a maximum quantization value for encoding an image composed of at least one frame, obtain a first bitrate by encoding a first frame set of the image with a quantization value equal to or less than the maximum quantization value, increase the maximum quantization value in response to the obtained first bitrate exceeding the maximum allowable bitrate, decrease the maximum quantization value in response to the obtained first bitrate being less than or equal to the maximum allowable bitrate, obtain a second bitrate by encoding a second frame set subsequent to the first frame set of the image based on the increased or decreased maximum quantization value, increase the maximum quantization value in response to the obtained second bitrate exceeding the maximum allowable bitrate, and decrease the maximum quantization value in response to the obtained second bitrate being less than or equal to the maximum allowable bitrate.

Claims17

Dependent claims

An electronic device comprising:

a memory;
and
a processor operatively connected to the memory,
wherein the processor is configured to:
obtain a maximum allowable bitrate of the electronic device,
determine a maximum quantization value for encoding a video composed of a plurality of frames,
obtain a first bitrate by encoding a first frame set of the video with a quantization value equal to or less than the maximum quantization value,
increase the maximum quantization value in response to the obtained first bitrate exceeding the maximum allowable bitrate,
decrease the maximum quantization value in response to the obtained first bitrate being less than or equal to the maximum allowable bitrate,
obtain a second bitrate by encoding a second frame set subsequent to the first frame set of the video, based on the increased or decreased maximum quantization value,
increase the maximum quantization value in response to the obtained second bitrate exceeding the maximum allowable bitrate,
decrease the maximum quantization value in response to the obtained second bitrate being less than or equal to the maximum allowable bitrate,
determine a first resource level of the first frame set based on the first bitrate,
determine a second resource level of the second frame set based on the second bitrate, and
store the second resource level in a header of video data when the second resource level is higher than the first resource level, and
wherein a resource level is required to reproduce the video in a playback device.

13 more elements

A method of encoding with adjusting a maximum quantization value, the method comprising:

obtaining a maximum allowable bitrate of an electronic device;
determining a maximum quantization value of a video composed of a plurality of frames;
obtaining a first bitrate by encoding a first frame set of the video with a quantization value equal to or less than the maximum quantization value;
increasing the maximum quantization value in response to the obtained first bitrate exceeding the maximum allowable bitrate;
decreasing the maximum quantization value in response to the obtained first bitrate being less than or equal to the maximum allowable bitrate;
obtaining a second bitrate by encoding a second frame set subsequent to the first frame set of the video, based on the increased or decreased maximum quantization value;
increasing the maximum quantization value in response to the obtained second bitrate exceeding the maximum allowable bitrate;
decreasing the maximum quantization value in response to the obtained second bitrate being less than or equal to the maximum allowable bitrate;
determining a first resource level of the first frame set based on the first bitrate;
determining a second resource level of the second frame set based on the second bitrate;
and
storing the second resource level in a header of video data when the second resource level is higher than the first resource level,
wherein a resource level is required to reproduce the video in a playback device.

10 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/580,068Filed 20 Jan 2022 · continuation
Priority: KR 10-2021-003706923 Mar 2021
Published: US 2022/0312018 A129 Sep 2022
Granted: 7 Jan 2025
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

H04N 19/146
Characterised by the element, parameter or criterion affecting or controlling the adaptive coding: data rate or code amount at the encoder output
H04N 19/124
Characterised by the element, parameter or selection affected or controlled by the adaptive coding: quantisation
H04N 19/136
Characterised by the element, parameter or criterion affecting or controlling the adaptive coding: incoming video signal characteristics or properties
H04N 19/137
Incoming video signal characteristics or properties: motion inside a coding unit, e.g. average field, frame or block difference

Family

PCT/KR2022/000617Parent of this continuation · filed 13 Jan 2022
US 2022/0312018 A1Pre-grant publication · published 29 Sep 2022
US 12,192,477 B2This patent

From the US filing history. Foreign family members aren’t listed.

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