Citrix Systems, Inc.

Bytemobile, Inc.

Andrew Penner

Miguel Melnyk

Jeremy Tidemann

Nicholas James Stavrakos

Fabian Breg

Robert Kidd

Kapil Dakhane

Tushar Kanekar

Frederick Alan Koopmans

Suresh Bashyam

John Rochon

Ioannis Beredimas

Kannan Parthasarathy

Kartik Ayyar

Nathanael A Thompson

Joseph Sestrich

Miguel A Melnyk

Systems and methods for detecting attacks using a handshake request are provided. A plurality of devices can receive a plurality of handshake requests to establish TLS connections that include a respective application request. At least one of the plurality of handshake requests can include a first application request. The plurality of devices can record each of the respective application requests to a registry of application requests. A first device of the plurality of devices can receive a subsequent handshake request to establish a subsequent TLS connection that includes the first application request. The first device can query, prior to accepting the first application request, the registry for the first application request. The first device can determine whether to accept or reject the first application request responsive to identifying from the query that the first application request has not been or has been recorded in the registry.

Detecting attacks using handshake requests systems and methods

Systems and methods for applying an application layer policy to a transport layer security request are provided. A device, intermediary to one or more clients and one or more servers, can receive a transport layer security (TLS) request to establish a TLS connection between a client of the one or more clients and a server of the one or more servers. The TLS request can include an application layer request to a resource of the server. The device can apply an application layer policy to the application layer request of the TLS request. The device can determine, responsive to applying the application layer policy, whether to one of accept or reject at least the application layer request of the TLS request.

Applying application layer policy to transport layer security requests systems and methods

A computer-implemented method includes receiving an encoded video frame, decompressing the received encoded video frame, extracting a first quantization parameter (QP) from the decompressed video frame, and acquiring a delta QP based on the first QP. The method also includes acquiring a second QP based on the delta QP and the first QP, compressing the decompressed video frame based on the second QP, and providing the compressed video frame. The first QP corresponds to quantization settings originally used for compressing the encoded video frame. And the second QP corresponds to quantization settings for compressing the decompressed video frame.

Framework for quality-aware video optimization

A cache server includes a memory, and a processor to acquire segments of media data associated with a first request, with the first request being generated by a client device. The segments associated with the first request are stored in the memory. Keys for the segments associated with the first request are generated, with each segment having a respective key associated therewith that is a unique identifier for that segment.

Systems and methods for partial video caching

A method of optimizing an encoded video stream comprising one or more video frames, each video frame comprising a plurality of macroblocks, each macroblock comprising a plurality of pixels. The method includes receiving an encoded macroblock, decoding the encoded macroblock, and extracting a first quantization parameter. The first quantization parameter corresponds to quantization settings originally used for compressing the encoded macroblock. The method also includes computing a second quantization parameter based at least in part on the first quantization parameter, re-encoding the decoded macroblock based on the second quantization parameter, and providing the re-encoded macroblock.

Macroblock-level adaptive quantization in quality-aware video optimization

A cache server, a method, and a non-transitory computer-readable medium storing a set of instructions are disclosed. The apparatus comprises a memory and one or more processors configured to acquire one or more segments of media data associated with a first request, the first request being generated by one or more client devices, store the one or more segments associated with the first request, generate a key for each segment of the one or more segments associated with the first request, and generate a first set entry and a first set key for the one or more segments associated with the first request.

A system and method is provided for controlling multimedia data transmission to a communication device via a network. The system comprises a de-muxer configured to obtain a first multimedia data for transmission and a flow controller configured to evaluate an estimated buffer time associated with the communication device. If the estimated buffer time satisfies a first threshold condition, the flow controller updates a current transmitting state to be a pacing state. And if the estimated buffer time satisfies a second threshold condition, the flow controller updates the current transmitting state to be a bursting state. The system also comprises a muxer configured to transmit the first multimedia data at a transmitting rate corresponding to the bursting state or the pacing state.

Methods and systems for optimal delivery of internet video over wireless networks

A method includes receiving streaming media data having a media frame and a frame index referencing the media frame; allocating a frame budget for an output media frame by estimating a frame size of the output media frame based on the frame index; generating the output media frame in real-time by processing the media frame based on first processing parameters and, if the allocated frame budget is greater than a frame size of the processed media frame, padding the processed media frame; and providing the output media frame.

Budget encoding

A system and method for acquiring media data to be transmitted through a media network to a terminal and receiving a receiver report from the terminal, and estimating the condition of the network using information from the receiver report. Determining a data path based on whether the media network is congested, wherein the data path is a compression data path if the media network is congested, or the data path is a pass-through data path if the media network is not congested; and providing the media data through the determined data path.

On-demand adaptive bitrate management for streaming media over packet networks

A system includes a mobile device and an optimization server. The mobile device is capable of transmitting request data that includes a requested webpage and identification data. The optimization server is configured to receive response data that corresponds to the request data from a content server, to adapt the response data based on the identification data, and to transmit the adapted response data to the mobile device.

Content adaptation

A method includes receiving streaming media data having an original media frame and an original frame index referencing the original media frame; determining an optimal session bitrate, wherein the optimal session bitrate is based on the available network bandwidth between a server and a terminal; allocating a frame budget for an output media frame by estimating a frame size of the output media frame based on the original frame index and the optimal session bitrate; generating the output media frame by processing the original media frame based on first encoding parameters and, if the allocated frame budget is greater than a frame size of the processed media frame, padding the processed media frame; and providing the output media frame.

Growing community of inventors

Champaign, IL, United States of America

Andrew Penner