US Patent Application 18219221. Encoder, Decoder and Methods Thereof for Video Encoding and Decoding simplified abstract

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Encoder, Decoder and Methods Thereof for Video Encoding and Decoding

Organization Name

Telefonaktiebolaget LM Ericsson (publ)


Inventor(s)

[[Rickard Sj�berg of Stockholm (SE)]]

Jonatan Samuelsson of Stockholm (SE)

Encoder, Decoder and Methods Thereof for Video Encoding and Decoding - A simplified explanation of the abstract

This abstract first appeared for US patent application 18219221 titled 'Encoder, Decoder and Methods Thereof for Video Encoding and Decoding

Simplified Explanation

The patent application describes an encoder that ensures a specific flag value for each long-term picture in a picture sequence.

  • The encoder checks if there are at least two reference pictures in a decoded picture buffer with specific values.
  • If the condition is met, a flag called delta_poc_msb_present_flag is set to 1 for the long-term picture.
  • This flag indicates that the long-term picture is represented by the full Picture Order Count (POC).
  • The POC is a value used to order pictures in a video sequence.


Original Abstract Submitted

According to an embodiment, an encoder is configured to ensure that for each long-term picture of a RPS of a picture i the value of a flag referred to as delta_poc_msb_present_flag[i] is equal to 1 when there are at least two reference pictures in a decoded picture buffer with lsb's of the POC referred to as pic_order_cnt_lsb equal to the lsb's of the respective long-term picture i denoted POC lsbLt[i]. When the delta_poc_msb_present_flag is equal to 1, the long-term picture is indicated by the full POC.

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