公开(公告)号：US20150229873A1

公开(公告)日：2015-08-13

申请号：US14691534

申请日：2015-04-20

Applicant: NETFLIX, INC.

Inventor： Anthony Neal PARK ,  Wei WEI

IPC: H04N5/76 ,  H04N21/2343 ,  H04N21/439 ,  H04N21/44 ,  H04N21/442 ,  H04N7/173 ,  H04N21/845

CPC classification number: H04N21/2223 ,  H04N5/76 ,  H04N7/173 ,  H04N21/23406 ,  H04N21/23439 ,  H04N21/2387 ,  H04N21/4392 ,  H04N21/44004 ,  H04N21/44209 ,  H04N21/462 ,  H04N21/6125 ,  H04N21/6379 ,  H04N21/8456

Abstract: One embodiment of the present invention sets forth a technique for adapting playback bit rate to available delivery bandwidth in a content delivery system comprising a content server and a content player. A content player periodically estimates whether a given playback bit rate can feasibly provide complete playback for a given title assuming currently available bandwidth. If playback becomes unfeasible at a current bit rate assuming currently available bandwidth, then the content player adapts the bit rate downward until a feasible bit rate is achieved. If playback is feasible using a higher bit rate, then the content player may adapt the bit rate upward.

Abstract translation: 本发明的一个实施例提出了一种用于在包括内容服务器和内容播放器的内容传送系统中使播放比特率适应于可用传送带宽的技术。 内容播放器周期性地估计给定的重放比特率是否可以为当前可用带宽的给定标题提供完整的播放。 如果播放在当前可用带宽的当前比特率下变得不可行，则内容播放器将比特率向下适应，直到达到可行比特率。 如果使用较高的比特率进行播放是可行的，则内容播放器可以向上调整比特率。

公开(公告)号：US20230205852A1

公开(公告)日：2023-06-29

申请号：US18175291

申请日：2023-02-27

Applicant: NETFLIX, INC.

Inventor： Mark WATSON ,  Anthony Neal PARK ,  Mitch ZOLLINGER

IPC: G06F21/10 ,  H04N21/4405 ,  H04N21/466 ,  H04N21/482 ,  H04N21/6334 ,  H04N21/8355 ,  H04N21/84

CPC classification number: G06F21/105 ,  H04N21/4405 ,  H04N21/4668 ,  H04N21/4826 ,  H04N21/6334 ,  H04N21/8355 ,  H04N21/84

Abstract: Techniques are disclosed for improving user experience of multimedia streaming over computer networks. More specifically, techniques presented herein reduce (or eliminate) latency in playback start time for streaming digital media content resulting from digital rights management (DRM) authorizations. A streaming media client (e.g., a browser, set-top box, mobile telephone or tablet “app”) may request a “fast-expiring” license for titles the streaming media client predicts a user is likely to begin streaming. A fast-expiring license is a DRM license (and associated decryption key) which is valid for only a very limited time after being used for playback. During the validity period of such a license, the client device requests a “normal” or “regular” license to continue accessing the title after the fast-expiring license expires.

公开(公告)号：US20140052873A1

公开(公告)日：2014-02-20

申请号：US13838059

申请日：2013-03-15

Applicant: NETFLIX, INC.

Inventor： Mark WATSON ,  Anthony Neal PARK ,  Wei WEI

IPC: H04L29/06

CPC classification number: H04L29/06476 ,  G06F21/10

Abstract: Techniques are disclosed for improving user experience of multimedia streaming over computer networks. For example, a method for presenting multimedia content may generally include receiving a request to stream a media title. In response to the request, unencrypted content for the media title is streamed to a client. While streaming the unencrypted content, a digital rights management (DRM) license to access encrypted content for the media title is requested. After receiving the DRM license, the client switches from streaming the unencrypted content for the media title to streaming encrypted content for the media title. The switching from streaming the unencrypted content to streaming the encrypted content does not interrupt playback of the media title.

Abstract translation: 公开了用于改善计算机网络上的多媒体流的用户体验的技术。 例如，用于呈现多媒体内容的方法通常可以包括接收流媒体标题的请求。 响应于该请求，媒体标题的未加密的内容被流传输给客户端。 在流式传输未加密内容的同时，请求访问媒体标题的加密内容的数字版权管理（DRM）许可。 在接收到DRM许可之后，客户端将用于媒体标题的未加密内容流传输到用于媒体标题的流加密内容。 将未加密的内容从流式传输到加密内容的切换不会中断媒体标题的回放。

公开(公告)号：US20170094319A1

公开(公告)日：2017-03-30

申请号：US15377811

申请日：2016-12-13

Applicant: NETFLIX, INC.

Inventor： Anthony Neal PARK ,  Wei WEI

IPC: H04N21/222 ,  H04N21/6379 ,  H04N21/462 ,  H04N21/234 ,  H04N21/61 ,  H04N21/2387

CPC classification number: H04N21/2223 ,  H04N5/76 ,  H04N7/173 ,  H04N21/23406 ,  H04N21/23439 ,  H04N21/2387 ,  H04N21/4392 ,  H04N21/44004 ,  H04N21/44209 ,  H04N21/462 ,  H04N21/6125 ,  H04N21/6379 ,  H04N21/8456

Abstract: One embodiment of the present invention sets forth a technique for adapting playback bit rate to available delivery bandwidth in a content delivery system comprising a content server and a content player. A content player periodically estimates whether a given playback bit rate can feasibly provide complete playback for a given title assuming currently available bandwidth. If playback becomes unfeasible at a current bit rate assuming currently available bandwidth, then the content player adapts the bit rate downward until a feasible bit rate is achieved. If playback is feasible using a higher bit rate, then the content player may adapt the bit rate upward.

公开(公告)号：US20140189771A1

公开(公告)日：2014-07-03

申请号：US14152705

申请日：2014-01-10

Applicant: NETFLIX, INC.

Inventor： Anthony Neal PARK ,  Wei WEI

IPC: H04N21/44 ,  H04N21/61

CPC classification number: H04N21/44004 ,  H04N21/44209 ,  H04N21/6175 ,  H04N21/6373

Abstract: One embodiment of the present invention sets forth a technique for adapting playback bit rate to available delivery bandwidth in a content delivery system comprising a content server and a content player. A content player periodically estimates whether a given playback bit rate can feasibly provide complete playback for a given title assuming currently available bandwidth. If playback becomes unfeasible at a current bit rate assuming currently available bandwidth, then the content player adapts the bit rate downward until a feasible bit rate is achieved. If playback is feasible using a higher bit rate, then the content player may adapt the bit rate upward.

Abstract translation: 本发明的一个实施例提出了一种用于在包括内容服务器和内容播放器的内容传送系统中使播放比特率适应于可用传送带宽的技术。 内容播放器周期性地估计给定的重放比特率是否可以为当前可用带宽的给定标题提供完整的播放。 如果播放在当前可用带宽的当前比特率下变得不可行，则内容播放器将比特率向下适应，直到达到可行比特率。 如果使用较高的比特率进行播放是可行的，则内容播放器可以向上调整比特率。