US 10,432,954 B2Granted

Video encoder, video encoding system and video encoding method

AssigneeNVIDIA Corporation

InventorsJianjun Chen, Xi He, Chunfeng Yang, Zejun Hu

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Abstract

The present disclosure discloses a video encoder, a video encoding system and a video encoding method. The video encoder comprises a logic control module and an encoding module. Wherein, the logic control module is configured to receive a control command sent from an external controller for encoding a specified portion of each frame of image, and send the control command to the encoding module; and the encoding module is configured to receive the control command from the logic control module, and encode the specified portion of each frame of image according to the control command, so as to cooperate with a plurality of other video encoders to complete encoding each frame of image. By employing the video encoder, video encoding system and video encoding method according to the present disclosure, each frame of image can be accomplished jointly by a plurality of video encoders, thus significantly reducing the encoding time, diminishing the encoding latency, and achieving real-time encoding of high-definition video sources, in particular, video sources with a resolution ratio of 4 k or above.

Claims18

Dependent claims

A video encoding system, comprising a controller, a first video encoder, a second video encoder, and a memory, where the video encoding system:

divides a frame of an image into a predetermined number of predetermined portions, where the predetermined number of the predetermined portions is based on a number of a plurality of video encoders within the video encoding system;
sends, from the controller to a first video encoder of the plurality of video encoders, a command to encode a first predetermined portion of the frame of the image;
sends, from the controller to a second video encoder of the plurality of video encoders, a command to encode a second predetermined portion of the frame of the image separate from the first predetermined portion of the frame of the image;
retrieves from the memory, by the first video encoder, the first predetermined portion of the frame of the image;
retrieves from the memory, by the second video encoder, the second predetermined portion of the frame of the image;
encodes, by the first video encoder, the first predetermined portion of the frame of the image to create a first encoded portion of the frame of the image, wherein during the encoding of the first predetermined portion of the frame of the image by the first video encoder, a value of an image height and width register used by the first video encoder is set based on a height and width of the first predetermined portion of the frame of the image, and a value of a macro block (MB) position register used by the first video encoder is set based on a position of a macro block in the image;
encodes, by the second video encoder, the second predetermined portion of the frame of the image to create a second encoded portion of the frame of the image different from the first encoded portion of the frame of the image, wherein during the encoding of the second predetermined portion of the frame of the image by the second video encoder, a value of an image height and width register used by the second video encoder is set based on a height and width of the second predetermined portion of the frame of the image, and a value of a macro block (MB) position register used by the second video encoder is set based on the position of the macro block in the image;
writes, by the first video encoder, the first encoded portion of the frame of the image to the memory;
and
writes, by the second video encoder, the second encoded portion of the frame of the image to the memory.

7 more elements

A video encoding system, comprising a controller, a first video encoder of a plurality of video encoders, a second video encoder of the plurality of video encoders, and a memory, where the video encoding system:

divides a frame of an image into a predetermined number of predetermined portions, where the predetermined number of the predetermined portions is based on a number of the plurality of video encoders within the video encoding system;
retrieves from the memory, by the first video encoder of the plurality of video encoders, a first predetermined portion of the frame of the image;
retrieves from the memory, by the second video encoder of the plurality of video encoders, a second predetermined portion of the frame of the image;
encodes, by the first video encoder, the first predetermined portion of the frame of the image to create a first encoded portion of the frame of the image, wherein during the encoding of the first predetermined portion of the frame of the image by the first video encoder, a value of an image height and width register used by the first video encoder is set based on a height and width of the first predetermined portion of the frame of the image, and a value of a macro block (MB) position register used by the first video encoder is set based on a position of a macro block in the image;
encodes, by the second video encoder, the second predetermined portion of the frame of the image to create a second encoded portion of the frame of the image different from the first encoded portion of the frame of the image, wherein during the encoding of the second predetermined portion of the frame of the image by the second video encoder, a value of an image height and width register used by the second video encoder is set based on a height and width of the second predetermined portion of the frame of the image, and a value of a macro block (MB) position register used by the second video encoder is set based on the position of the macro block in the image;
writes, by the first video encoder, the first encoded portion of the frame of the image to the memory;
and
writes, by the second video encoder, the second encoded portion of the frame of the image to the memory.

5 more elements

A video encoding method, comprising:

dividing a frame of an image into a predetermined number of predetermined portions, where the predetermined number of the predetermined portions is based on a number of a plurality of video encoders within a video encoding system;
sending, from a controller to a first video encoder of the plurality of video encoders, a command to encode a first predetermined portion of the frame of the image;
sending, from the controller to a second video encoder of the plurality of video encoders, a command to encode a second predetermined portion of the frame of the image separate from the first predetermined portion of the frame of the image;
retrieving from a memory, by the first video encoder, the first predetermined portion of the frame of the image;
retrieving from the memory, by the second video encoder, the second predetermined portion of the frame of the image;
encoding, by the first video encoder, the first predetermined portion of the frame of the image to create a first encoded portion of the frame of the image, wherein during the encoding of the first predetermined portion of the frame of the image by the first video encoder, a value of an image height and width register used by the first video encoder is set based on a height and width of the first predetermined portion of the frame of the image, and a value of a macro block (MB) position register used by the first video encoder is set based on a position of a macro block in the image;
encoding, by the second video encoder, the second predetermined portion of the frame of the image to create a second encoded portion of the frame of the image different from the first encoded portion of the frame of the image, wherein during the encoding of the second predetermined portion of the frame of the image by the second video encoder, a value of an image height and width register used by the second video encoder is set based on a height and width of the second predetermined portion of the frame of the image, and a value of a macro block (MB) position register used by the second video encoder is set based on the position of the macro block in the image;
writing, by the first video encoder, the first encoded portion of the frame of the image to the memory;
and
writing, by the second video encoder, the second encoded portion of the frame of the image to the memory.

7 more elements

Dependencies are inferred from the claim text.