Qualcomm Incorporated

Serafim Loukas, Jr

Vijayalakshmi Rajasundaram Raveendran

Gordon Kent Walker

Phanikumar Kanakadurga Bhamidipati

Thadi Manjunath Nagaraj

Fang Shi

Devarshi P Shah

Vinod Harimohan Kaushik

Bruce Collins

Binita Gupta

Seyfullah Halit Oguz

Rahul Gulati

Robert Sean Daley

Christopher John Bennett

Prasanna Kannan

Sumeet Singh Sethi

Fang Liu

James T Determan

Scott T Swazey

Sitaraman Ganapathy Subramania

Amnon Silberger

King Tam

David Samuel Brackman

Sten Jorgen Dahl

Brian William Orr

Bharat Ahuja

Peter Koster

Ramkumar Sampathkumar

Feng Zhou

Shaowen Sun

Dariusz Krolikowski

Various additional and alternative aspects are described herein. In some aspects, the present disclosure provides a method of testing a system-on-chip (SoC). The method includes generating data for a plurality of audio channels. The data comprises first data corresponding to a first audio channel and second data corresponding to a second audio channel. The method further includes outputting the first audio channel over a first output port of the SoC for output by a speaker. The method further includes outputting the second audio channel over a second output port. The method further includes looping back the second audio channel from the second output port to a first input port of the SoC as third data. The method further includes comparing the third data to the second data. The method further includes determining if the SoC is operating correctly based on the comparison of the third data to the second data.

Audio output diagnostic circuit

Techniques for video encoding and decoding a common guide media logic channel (MLC) to enable fast acquisition and re/synchronization of the video stream while preserving compression efficiency are provided. Systems and methods to process multimedia data using channel switch frames are presented. The system comprises an encoder operative to generate a common guide media logical channel (MLC) of a plurality of channel switch frames (CSFs), each respective active channel having one or more CSFs in the guide MLC. The decoder in the system is operative to decode a set of the plurality of CSFs from the guide MLC. The decoder simultaneously displays programming content of the decoded set of the plurality of CSFs on a display and automatically switches to a primary bitstream of an active channel associated with a selected one displayed CSF.

Systems and methods for applications using channel switch frames

This disclosure describes techniques for controlling a perceived quality of multimedia sequences to try to achieve a desired constant perceptual quality regardless of the content of the sequences. In particular, an encoding device may implement quality control techniques to associate a sequence segment with a content 'class' based on the content of the segment, determine a perceptual quality metric of the sequence segment, and adjust at least one encoding parameter used to encode the segment is encoded such that for the perceptual quality of the sequence segment converges to the desired quality.

Methods and systems for quality controlled encoding

Techniques for video encoding and decoding channel switch frames (CSF) to enable acquisition and re/synchronization of the video stream while preserving compression efficiency is provided. Systems and methods to process multimedia data enabling channel switching are presented. The systems generate a CSF with one or more network adaptation layer (NAL) units as a random access point (RAP) frame. Back-to-back frames are transmitted which include the CSF and a non-RAP frame, each having the same frame ID number.

Systems and methods for channel switching

In general, this disclosure describes techniques for exchanging information between a plurality of encoder modules and a multiplex module to combine segments of data from the encoder modules with an improved overall quality. In particular, the encoder modules associate their respective segments of data with quality and rate information and send at least the quality and rate information associated with the segments of data to the multiplex module. The multiplex module analyzes the quality and rate information to determine whether the segments of data that encoder modules desire to include in the current superframe fit within the available bandwidth of a transmission channel. If the multiplex module determines the plurality of segments of data do not fit within the available bandwidth, the multiplex module selects one or more of the segments to be resized based on the quality and rate information received from the encoder modules.

Methods and systems for resizing multimedia content based on quality and rate information

Growing community of inventors

Carlsbad, CA, United States of America

Serafim Loukas, Jr