Motorola Mobility LLC

Arris Enterprises LLC

Google Inc.

Other

General Instrument Corporation of Delaware

Kuang Ming Chen

Paul Moroney

William S Watson

Petr Peterka

Rafie Shamsaasef

Ambikacharan P Makam

Nick Baciu

William P Franks

Jiang Zhang

Erik John Elstermann

Robert Erich Lee

Polly Tang

John D Ostrom

Alexander Medvinsky

A media player system is provided for receiving and processing a media program that uses a time interval interval trequired to decode Nframes of the media program segment. The media system receives the requested media program segment, processes the segment and determines if the throughput of the media program differs from the desired presentation throughput by a tolerance amount. Both decoding and rendering performance are determined and used to determine presentation throughput, and to determine if heavier or lighter variants of the media program should be requested for subsequent media program segments.

Method and apparatus for automatic HLS bitrate adaptation

A method and video decoder system using the method are provided for identifying video frames in an encoded or encrypted video stream without performing decoding or decryption. The method includes: receiving a video data stream comprised of a plurality of transport stream (TS) packets; detecting a first video frame in the video data stream, wherein detection of the first video frame includes registering a last checked position at the start of the video data stream, examining bytes in a next TS packet to identify a predetermined pattern indicating a network abstraction layer (NAL) unit, repeating the examining step until two TS packets have been identified that include an NAL unit, wherein the last checked position is updated after each examining step, and identifying a video frame based on a position of the NAL unit identified in the two TS packets; and repeating the detecting step for a plurality of additional video frames in the video data stream.

Method to preserve video data obfuscation for video frames

A media player system is provided for receiving and processing a media program that uses a time interval interval to required to decode Nframes of the media program segment. The media system receives the requested media program segment, processes the segment and determines if the throughput of the media program differs from the desired presentation throughput by a tolerance amount. Both decoding and rendering performance are determined and used to determine presentation throughput, and to determine if heavier or lighter variants of the media program should be requested for subsequent media program segments.

Methods, systems, and computer readable media can be operable to facilitate the generation of a continuous multimedia stream during trickplay operations. When a trickplay request is received by a device that is processing a video stream for delivery to a media player, the device may modify the video stream to create a seamless delivery and playback of the underlying content at the media player. In response to a trickplay request such as a pause request or seek request, the device may identify a seek target based on the request and may initiate a new video stream that begins at the identified seek target. The device may further modify the new stream by trimming from the stream any content that is already stored or cached at the media player, thereby creating a video stream without any discontinuities.

Supporting trickplay of streaming DLNA multimedia by HLS access device

Methods and devices for clock roll-back detection in non-secure mobile platforms are disclosed. A first time is received from a secure time source. The first time is recorded as a last known good time ('LKGT') in secure storage on the mobile device. The LKGT is advanced and stored whenever a triggering event occurs. The mobile device receives a second time from the secure time source and records the second time as a subsequent stored LKGT in secure storage.

Secure time for mobile devices

Method and apparatus for distribution and synchronization of cryptographic context information is described. An aspect of the invention relates to synchronizing an encryptor and key management logic in a video distribution system. A request message is received from the encryptor. The request message includes authentication data and stream-dependent parameters associated with an internet protocol (IP) packet stream to be encrypted. Authenticity of the encryptor is verified using the authentication data. A cryptographic context for the IP packet stream is generated having the stream-dependent parameters and at least one encryption key. A reply message is sent to the encryptor having the at least one encryption key. Key stream messages having the cryptographic context are distributed towards user devices. The user devices are receiving an encrypted version of the IP packet stream generated by the encryptor.

Method and apparatus for distribution and synchronization of cryptographic context information

In an embodiment, a content array represents media content available from a media server. The content array, sent by a media server in response to a request, lists content program objects that represent media content to be available from the media server. The media server receives a message for altering a transcoding priority of the selected content program object that represents media content not previously transcoded by the media server, and sends a return code for indicating whether the transcoding priority was successfully altered in response to the message. In a further embodiment, a media server system includes a transcoding queue with references to a plurality of content program objects that include an object method for altering a transcoding priority, and includes a transcoder configured to transcode media content associated with the content program objects according to the transcoding priority of each content program object of the transcoding queue.

Altering transcoding priority

A Service Key Delivery (SKD) system for delivering a service keys to client devices in a communications network. The delivered service keys are operable to be used to decrypt an encrypted key operable to be used to decrypt an encrypted digital content. The SKD system includes a data input interface for receiving a distribution time frame for the keys and a listing of client device identifications. The SKD system also includes a scheduling module to partition at least part of the distribution time frame into a number of time slots in which the number may be based on a variety of factors. The scheduling module assigns the time slots in the partitioned part of the distribution time frame to the client devices based on the identifications in the listing. The SKD system also includes a message generator configured to send key delivery messages to the client devices.

Service key delivery system

A client device implements a media player and a proxy application. The media player controls playback of media content on the client device. The proxy application is implemented to request a playlist from a media server, where the playlist corresponds to the media content. The proxy application receives the playlist from the media server, and the playlist includes encryption key reference parameters to obtain an encryption key. The proxy application modifies the playlist to include local encryption key access parameters for the media player, and the modified playlist is communicated to the media player. The proxy application can then receive a request for the encryption key from the media player that utilizes the local encryption key access parameters included in the modified playlist, and the proxy application securely communicates the encryption key to the media player.

Secure live television streaming

A method is provided for viewing a bookmarked video clip. The method includes establishing communication over a broadband network with a first network element on which at least one bookmark resides. The bookmark includes metadata identifying a bookmarked video clip of a video program and specifies a network address at which the bookmarked video clip is located. Upon user request, metadata associated with a specified bookmark is received. Communication is established with a second network element on which the specified bookmarked video clip is located using the network address of the specified bookmarked video clip provided in the metadata. The bookmarked video clip is received from the second network element. The bookmarked video clip is encrypted in accordance with a digital rights management scheme. The bookmarked video clip is decrypted and rendered.

Digital rights management protection for content identified using a social TV service

In embodiments of an object model for domain-based content mobility, a client object model architecture () is configured for scalable and adaptive implementation to interface a mobile client device () with a media server () for wireless, secure download of media content () to the mobile client device. The client object model architecture can be implemented for domain-based control of a proxy application () that instantiates a media player () on the mobile client device, and interfaces with the media server that communicates the media content to the mobile client device. The client object model architecture also controls domain discovery of the media server, domain-based registration of the mobile client device with the media server, authentication of the mobile client device to the media server, and the secure download of the media content from the media server to the mobile client device.

Object model for domain-based content mobility

The present invention provides a lightweight and cushioned shoe's outsole having a pneumatic air tube swirled inside the outsole. Shoe's outsole of present invention becomes extremely lightweight and cushioning when the pneumatic air tube inside the outsole is inflated. The present invention provides an air mattress type inflatable bladder of shoe's insole having honeycomb-like construction by using tuft inside the insole. Shoe's insole of present invention becomes extremely bouncing and cushioning when the bladder of the insole is inflated. The present invention provides an air pressure alert system having an air compressive and expandable device and a liquid capillary. The air pressure of the shoe's outsole and shoe's insole of present invention is able to track through the functions of air pressure alert system of present invention.

Growing community of inventors

San Diego, CA, United States of America

Kuang Ming Chen