公开(公告)号：US09088550B1

公开(公告)日：2015-07-21

申请号：US13685252

申请日：2012-11-26

Applicant: AMAZON TECHNOLOGIES, INC

Inventor： Quais Taraki ,  Tapani Juha Otala ,  Lei Li ,  Sreeram Raju Chakrovorthy ,  Dor Naveh

IPC: G06F7/04 ,  H04L29/06 ,  G06F21/80 ,  G06F21/10

CPC classification number: H04L63/0457 ,  G06F21/10 ,  G06F21/80 ,  G06F2221/0784 ,  H04L65/604 ,  H04N21/2541 ,  H04N21/4302 ,  H04N21/4627 ,  H04N21/845 ,  H04N21/8549

Abstract: Described herein are systems and methods for initiating presentation of content on a device. Unencrypted content is received for presentation. During presentation of the unencrypted content, encrypted content is accessed, decrypted and prepared for presentation. Once available, the presentation transitions from the unencrypted content to the encrypted content. As a result, latencies involved in accessing the encrypted content do not affect presentation to a user.

Abstract translation: 这里描述了用于发起在设备上呈现内容的系统和方法。 收到未加密的内容进行演示。 在呈现未加密内容期间，加密内容被访问，解密并准备呈现。 一旦可用，演示将从未加密内容转换为加密内容。 因此，访问加密内容所涉及的延迟不会影响对用户的呈现。

公开(公告)号：US09544346B1

公开(公告)日：2017-01-10

申请号：US14298145

申请日：2014-06-06

Applicant: Amazon Technologies, Inc.

Inventor： Sreeram Raju Chakrovorthy ,  Shinjan Kumar Tiwary

IPC: G06F15/173 ,  H04L29/06 ,  H04L12/26

CPC classification number: H04L65/60 ,  H04L41/5058 ,  H04L43/08 ,  H04L43/16

Abstract: Media devices may stream content from content delivery networks. Described herein are systems, devices, and methods for selecting nodes to improve content streaming. A selection server may select a node based on destination metrics provided by the media device. The destination metrics may include a variety of information such as information about the latency associated with the video stream, the bandwidth between the media device and the streaming node, or the throughput associated with the video stream. The selection server may compare the destination metrics with source metrics to determine which node to select.

Abstract translation: 媒体设备可以从内容传送网络流式传输内容。 这里描述了用于选择节点以改进内容流的系统，设备和方法。 选择服务器可以基于由媒体设备提供的目的地度量来选择节点。 目的地度量可以包括各种信息，例如关于与视频流相关联的延迟的信息，媒体设备和流节点之间的带宽，或与视频流相关联的吞吐量。 选择服务器可以将目的地度量与源度量进行比较，以确定要选择的节点。

公开(公告)号：US11409415B1

公开(公告)日：2022-08-09

申请号：US16719498

申请日：2019-12-18

Applicant: AMAZON TECHNOLOGIES, INC.

Inventor： Shinjan Kumar Tiwary ,  Sreeram Raju Chakrovorthy ,  Sapna Jayaram Rai

IPC: G06F3/0484 ,  H04N21/2343

Abstract: When streaming content such as movies, music, or audiobooks for presentation, changes in conditions or unavailable frames may result in stutters or other negative experiences during presentation. Described herein are techniques and systems for extrapolating one or more frames based on previously received data. When an unavailable frame is determined, an interpolated frame is generated for presentation in place of the unavailable frame. The interpolated frame may be generated based on other frames that were received out of sequence, such as frames for presentation subsequent to the unavailable frame, as well as frames for presentation prior to the unavailable frame.

公开(公告)号：US09232249B1

公开(公告)日：2016-01-05

申请号：US14014265

申请日：2013-08-29

Applicant: AMAZON TECHNOLOGIES, INC.

Inventor： Sreeram Raju Chakrovorthy ,  Sapna Jayaram Rai ,  Shinjan Kumar Tiwary

IPC: H04N7/173 ,  H04N21/258 ,  H04N21/234

CPC classification number: H04N21/25808 ,  H04N21/23406 ,  H04N21/23412 ,  H04N21/23439 ,  H04N21/44004 ,  H04N21/44008 ,  H04N21/44209 ,  H04N21/8455

Abstract: A variety of media devices may stream and present content such as movies, music, audiobooks, and so forth. During streaming, data transfer rates may temporarily drop below that needed to maintain presentation. Described herein are techniques and systems for repeating presentation of previously received video frames. This repeated presentation allows for presentation of the content to continue uninterrupted, while providing time for the data transfer rate to regain a level capable of maintaining the presentation.

Abstract translation: 各种媒体设备可以流和呈现诸如电影，音乐，有声读物等的内容。 在流媒体期间，数据传输速率可能会暂时降低到维持演示所需的速度。 这里描述了用于重复先前接收到的视频帧的呈现的技术和系统。 这种重复的演示允许呈现内容以不间断地继续，同时为数据传输速率提供时间以恢复能够维持演示的水平。

公开(公告)号：US10521086B1

公开(公告)日：2019-12-31

申请号：US14109077

申请日：2013-12-17

Applicant: AMAZON TECHNOLOGIES, INC.

Inventor： Shinjan Kumar Tiwary ,  Sreeram Raju Chakrovorthy ,  Sapna Jayaram Rai

IPC: G06F3/0484 ,  H04N21/2343

Abstract: A variety of media devices may stream and present content such as movies, music, audiobooks, and so forth. During streaming, changing conditions or unavailable frames may result in stutters or other presentation problems. Described herein are techniques and systems for extrapolating one or more frames based on previously received data. The interpolated frames may be presented, reducing or eliminating the presentation problems.

公开(公告)号：US09767317B1

公开(公告)日：2017-09-19

申请号：US14225175

申请日：2014-03-25

Applicant: AMAZON TECHNOLOGIES, INC.

Inventor： Sreeram Raju Chakrovorthy ,  Celil Urgan ,  Shinjan Kumar Tiwary ,  Joseph Everett Bentley ,  Jaee Patwardhan

IPC: G06F21/71 ,  G06F21/70 ,  G06F21/53

CPC classification number: G06F21/71 ,  G06F21/10 ,  G06F21/53 ,  G06F21/70 ,  G06F21/74

Abstract: A browser includes modules to provide markup language applications with access to cryptographic functions executing in a secure zone. Non-secure operations associated with the cryptographic functions called by the markup language application may be executed in a virtual machine. Sensitive data such as cryptographic keys may be “wrapped” or encrypted by the secure zone using a key. The encrypted sensitive data may then be stored in non-secure memory for further use. Upon request by the cryptographic functions, the encrypted sensitive data may be retrieved and decrypted with the secure zone for use.

公开(公告)号：US08922713B1

公开(公告)日：2014-12-30

申请号：US13870788

申请日：2013-04-25

Applicant: Amazon Technologies, Inc.

Inventor： Sreeram Raju Chakrovorthy ,  Ziqiang Huang ,  Jaee Patwardhan

IPC: H04N7/26 ,  H04N9/475 ,  H04N5/04

CPC classification number: H04N5/04 ,  H04N21/4307 ,  H04N21/43635

Abstract: Content comprising audio and video may be processed by different processing pipelines, but latencies between these pipelines may differ due to differences in data compression, processing loads, and so forth. The time between entry and exit from the pipeline of a frame is measured to determine pipeline latency. The pipeline latency may be used to shift timing of audio frames, video frames, or both, such that they are synchronized during presentation.

Abstract translation: 包括音频和视频的内容可以由不同的处理管线处理，但是由于数据压缩，处理负载等的差异，这些管线之间的延迟可能会不同。 测量从帧的流水线进入和退出之间的时间以确定流水线延迟。 流水线延迟可用于移动音频帧，视频帧或两者的定时，使得它们在呈现期间被同步。

公开(公告)号：US10135896B1

公开(公告)日：2018-11-20

申请号：US14187768

申请日：2014-02-24

Applicant: AMAZON TECHNOLOGIES, INC.

Inventor： Shinjan Kumar Tiwary ,  Sreeram Raju Chakrovorthy ,  Sapna Jayaram Rai

IPC: H04L29/06

Abstract: Media devices streaming video from a server may use techniques to maintain presentation of content to one or more users. Described herein are systems and methods for determining which metadata to provide to the media devices for maintaining presentation of the content. The determination of which metadata to provide may be based on various factors such as the capabilities of the media device, the expected quality of service, and the amount of bandwidth between the server and the media device.

公开(公告)号：US09674255B1

公开(公告)日：2017-06-06

申请号：US14225848

申请日：2014-03-26

Applicant: AMAZON TECHNOLOGIES, INC.

Inventor： Shinjan Kumar Tiwary ,  Celil Urgan ,  Sreeram Raju Chakrovorthy ,  Jaee Patwardhan ,  Joseph Everett Bentley

IPC: G06F15/16 ,  H04L29/06

CPC classification number: H04L65/607 ,  H04L65/4084 ,  H04L65/602 ,  H04L65/604 ,  H04L65/80

Abstract: Media devices may stream a wide variety of content for presentation. Described herein are systems, devices, and methods for improving the presentation of the content. The media device may execute a pipeline architecture comprising a sequential execution of a plurality of threads. The threads may include a decryption thread, a decoding thread, and a rendering thread. The media device may include buffer queues between the threads, which enable continuous content presentation when one or more of the threads fail to communicate with another thread. The media device may pause the presentation of content by suspending the execution of the rendering thread. In one implementation, the media device replaces a stale frame that is displayed after performing a seek function with a black frame. In another example, to maintain content presentation, the media device drops video frames if an audio video lag event occurs.

公开(公告)号：US09473548B1

公开(公告)日：2016-10-18

申请号：US13797323

申请日：2013-03-12

Applicant: AMAZON TECHNOLOGIES, INC

Inventor： Sreeram Raju Chakrovorthy ,  Sapna Jayaram Rai

IPC: H04L29/06 ,  H04N21/47 ,  H04N21/472

CPC classification number: H04L65/60 ,  H04L65/4069 ,  H04L65/4084 ,  H04L65/4092 ,  H04N21/431 ,  H04N21/4384 ,  H04N21/47 ,  H04N21/472 ,  H04N21/47217 ,  H04N21/8153 ,  H04N21/84

Abstract: Described herein are systems and methods for determining and distributing pre-fetch data associated with streaming of content to a media device. Transport control data associated with user navigation within the content during consumption of the content is acquired. The transport control data is processed to determine one or more points of interest in the content. Pre-fetch content associated with these one or more points of interest may be delivered to the media device. Presentation is expedited with low or no latency during navigation to one of the points of interest having the pre-fetched content, which may be presented while the content is being made available.

Abstract translation: 这里描述了用于确定和分发与内容流传输相关联的预取数据到媒体设备的系统和方法。 获取在消费内容期间与内容内的用户导航相关联的传输控制数据。 处理运输控制数据以确定内容中的一个或多个兴趣点。 与这些一个或多个兴趣点相关联的预取内容可以被传送到媒体设备。 在导航到具有预取内容的感兴趣的兴趣点之一时，可以以低或无延迟来呈现呈现，这可以在内容可用时呈现。