US 11,997,302 B2
Encoding device, decoding device, streaming system, and streaming method
Shunichi Gondo, Ota (JP); Tomoya Kodama, Kawasaki (JP); Takeshi Chujoh, Kawasaki (JP); Akiyuki Tanizawa, Kawasaki (JP); and Takayuki Itoh, Kawasaki (JP)
Assigned to Kabushiki Kaisha Toshiba, Tokyo (JP)
Filed by Kabushiki Kaisha Toshiba, Tokyo (JP)
Filed on Feb. 2, 2022, as Appl. No. 17/591,127.
Application 17/591,127 is a continuation of application No. 14/842,214, filed on Sep. 1, 2015, abandoned.
Claims priority of application No. 2014-191604 (JP), filed on Sep. 19, 2014.
Prior Publication US 2022/0159288 A1, May 19, 2022
Int. Cl. H04N 19/50 (2014.01); H04N 21/236 (2011.01); H04N 21/2365 (2011.01)
CPC H04N 19/50 (2014.11) [H04N 21/23602 (2013.01); H04N 21/2365 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A communication device, comprising:
one or more processors configured to:
receive a first stream generated by encoding a video source at a first bit rate, the first stream including a first intra-coded image and one or more first inter-coded images,
decode the first intra-coded image,
decode the one or more first inter-coded images by using the first intra-coded image as a reference image,
receive, if a selected bit rate is switched from the first bit rate to a second bit rate differing from the first bit rate at a first timing, a second stream generated by encoding a video source, which is a same video source as the video source used to generate the first stream, at the second bit rate, the second stream including one or more second inter-coded images without including any intra-coded images, the second inter-coded images having reproduction timings in synchronization with the first inter-coded images that have reproduction timings after the first timing, each of the second inter-coded images including one or more high-quality areas and one or more low-quality areas, and
decode the second inter-coded images by using the first intra-coded image as a reference image that is included in the received first stream, wherein
the one or more processors are further configured to:
receive the second stream if a selected bit rate is switched from the first bit rate to the second bit rate and if reproduction of a partial high-quality image is designated, and
receive, if the selected bit rate is switched from the first bit rate to a third bit rate, a third stream generated by encoding the same video source as the video source used to generate the first stream, at the third bit rate, the third stream including one or more third inter-coded images and not including any intra-coded images, each of the third inter-coded images not including any high-quality areas, and
the second bit rate and the third bit rate are lower than the first bit rate.