公开(公告)号：JP2013118656A

公开(公告)日：2013-06-13

申请号：JP2013000188

申请日：2013-01-04

Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

Inventor： RAVEENDRAN VIJAYALAKSHMI R ,  CHEN PEISONG ,  TIAN TAO

IPC: H03M7/40 ,  H04N1/41 ,  H04N7/26

CPC classification number: H03M7/425 ,  H03M7/40

Abstract: PROBLEM TO BE SOLVED: To provide systems and methods of decoding variable length codes in order to further increase data rates in a multimedia transmission system.SOLUTION: A method of processing a bit stream via buffers comprises: determining the number of bits available in a buffer; parsing fixed and variable length codes from a bit-wise stream of multi-media data by maintaining and reading data points of the multi-media data in a processor aligned (e.g., word aligned) way; and decoding variable length codes particularly in a received state using multiple levels of decoding tables to speed up decoder table searching.

Abstract translation: 要解决的问题：提供解码可变长度代码的系统和方法，以便进一步增加多媒体传输系统中的数据速率。 解决方案：一种通过缓冲器处理比特流的方法包括：确定缓冲器中可用的比特数; 通过以处理器对准（例如，字对齐）的方式维护和读取多媒体数据的数据点来解码来自多媒体数据的逐位流的固定和可变长度代码; 以及特别是在接收状态下使用多级解码表解码可变长度码，以加速解码器表搜索。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2013048437A

公开(公告)日：2013-03-07

申请号：JP2012209771

申请日：2012-09-24

Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

Inventor： TIAN TAO ,  RAVEENDRAN VIJAYALAKSHMI R ,  LIU FANG

IPC: H04N7/01

CPC classification number: H04N21/440281 ,  H04N7/0112 ,  H04N7/012

Abstract: PROBLEM TO BE SOLVED: To provide a method of converting video data to film data.SOLUTION: A method of converting video data to film data includes deinterlacing video data from a first field and a third field to produce first field video data, providing second field video data, and merging the first field video data and the second field video data to produce first frame video data. The method further includes copying video data from a fourth field and a fifth field to produce second frame video data. An apparatus for converting video data to film data includes a first deinterlacer for deinterlacing video data from a first field and a third field to produce first field video data, and a copy module for providing second field video data and merging the first field video data and the second field video data to produce the first frame video data.

Abstract translation: 要解决的问题：提供将视频数据转换成电影数据的方法。 解决方案：将视频数据转换成胶片数据的方法包括：从第一场和第三场去隔行扫描视频数据，产生第一场视频数据，提供第二场视频数据，并合并第一场视频数据和第二场 视频数据产生第一帧视频数据。 该方法还包括从第四场和第五场复制视频数据以产生第二帧视频数据。 一种用于将视频数据转换成胶片数据的装置包括用于对来自第一场和第三场的视频数据进行去隔行扫描以产生第一场视频数据的第一去隔行扫描器，以及用于提供第二场视频数据并合并第一场视频数据和 第二场视频数据产生第一帧视频数据。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2013031171A

公开(公告)日：2013-02-07

申请号：JP2012162714

申请日：2012-07-23

Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

Inventor： TIAN TAO ,  LIU FANG ,  HUANG SI ,  RAVEENDRAN VIJAYALAKSHMI R

IPC: H04N7/26 ,  H04N5/44

CPC classification number: H04N7/0112 ,  H04N5/145 ,  H04N5/147 ,  H04N7/012 ,  H04N19/107 ,  H04N19/147 ,  H04N19/176 ,  H04N19/19 ,  H04N19/523 ,  H04N19/86 ,  H04N19/87

Abstract: PROBLEM TO BE SOLVED: To provide improvement in a multimedia data processing apparatus and method.SOLUTION: The invention generally relates to multimedia data processing, and more particularly, to processing operations performed prior to or in conjunction with data compression processing. A method of processing multimedia data includes: receiving interlaced video frames; obtaining metadata for the interlaced video frames; converting the interlaced video frames to progressive video using at least a portion of the metadata; and providing the progressive video and at least a portion of the metadata to an encoder for use in encoding the progressive video. The method can also include generating spatial information and bi-directional motion information for the interlaced video frames, and generating progressive video based on the interlaced video frames using the spatial and bi-directional motion information.

Abstract translation: 解决的问题：提供多媒体数据处理装置和方法的改进。 解决方案：本发明一般涉及多媒体数据处理，更具体地，涉及在数据压缩处理之前或结合数据压缩处理执行的处理操作。 一种处理多媒体数据的方法包括：接收隔行视频帧; 获取隔行视频帧的元数据; 使用所述元数据的至少一部分将所述隔行视频帧转换为逐行视频; 以及将逐行视频和至少一部分元数据提供给编码器以用于编码逐行视频。 该方法还可以包括为隔行视频帧生成空间信息和双向运动信息，以及使用空间和双向运动信息基于隔行视频帧产生逐行视频。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2011109678A

公开(公告)日：2011-06-02

申请号：JP2010279331

申请日：2010-12-15

Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

Inventor： RAVEENDRAN VIJAYALAKSHMI R ,  CHEN PEISONG ,  TIAN TAO

IPC: H03M7/40

CPC classification number: H03M7/425 ,  H03M7/40

Abstract: PROBLEM TO BE SOLVED: To improve processing in a decoder in a multimedia transmission system.
SOLUTION: A fixed length code and a variable length code are parsed from a bit-wise stream of multimedia data by maintaining and reading the multimedia data in a processor-aligned way. A fixed length code word reads determined available bits and bits associated with a portion of the processor-aligned data, and a variable length code word reads at least some of the available bits. Variable length codes, particularly in a received state, are decoded using multiple levels of decoding tables to speed up decoder table lookup.
COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：改善多媒体传输系统中的解码器中的处理。 解决方案：通过以处理器对齐的方式维护和读取多媒体数据，从逐位多媒体数据流中解析出固定长度代码和可变长度代码。 固定长度码字读取与处理器对准数据的一部分相关联的确定的可用比特和比特，并且可变长度码字读取至少一些可用比特。 可变长度码，特别是在接收状态下，使用多级解码表解码，以加速解码器表查找。 版权所有（C）2011，JPO＆INPIT

公开(公告)号：CA2912615C

公开(公告)日：2021-06-15

申请号：CA2912615

申请日：2014-07-03

Applicant: QUALCOMM INC

Inventor： VERMANI SAMEER ,  TIAN BIN ,  VAN ZELST ALBERT ,  VAN NEE DIDIER JOHANNES RICHARD ,  TANDRA RAHUL ,  DOAN DUNG NGOC ,  TIAN TAO

IPC: H04W56/00 ,  H04L5/00 ,  H04L27/26 ,  H04W74/08 ,  H04W84/12

Abstract: Aspects of the present disclosure provide example preamble formats with repeated signal (SIG) fields that may help provide backwards compatibility and help address the effects of larger delay spreads in various wireless bands (e.g., WiFi bands).

公开(公告)号：ES2711372T3

公开(公告)日：2019-05-03

申请号：ES14744406

申请日：2014-07-03

Applicant: QUALCOMM INC

Inventor： VERMANI SAMEER ,  TIAN BIN ,  VAN ZELST ALBERT ,  VAN NEE DIDIER JOHANNES RICHARD ,  TANDRA RAHUL ,  DOAN DUNG NGOC ,  TIAN TAO

IPC: H04W56/00 ,  H04L1/00 ,  H04L5/00 ,  H04L27/26 ,  H04W74/08 ,  H04W84/12

Abstract: Un procedimiento (700) para comunicaciones inalámbricas, el procedimiento que se ejecuta por un aparato y que comprende: generar (702) un paquete que tenga un preámbulo decodificable por un primer tipo de dispositivo que tenga un primer conjunto de capacidades y un segundo tipo de dispositivo que tenga un segundo conjunto de capacidades, en el que el preámbulo comprende al menos una señal repetida, campo SIG, y en el que al menos una primera porción del campo SIG repetido está precedida por un intervalo de guarda; y transmitir (704) el paquete.

公开(公告)号：BRPI0717889A2

公开(公告)日：2013-11-05

申请号：BRPI0717889

申请日：2007-10-29

Applicant: QUALCOMM INC

Inventor： LOUKAS SERAFIM S JR ,  TIAN TAO ,  RAVEENDRAN VIJAYALAKSHMI R

IPC: H04N7/36

Abstract: Aspects include systems and methods of improving processing in an encoder in a multimedia transmission system. Multimedia data may include one or more of motion video, audio, still images, or any other suitable type of audio-visual data. Aspects include an apparatus and method of encoding video data. For example, an apparatus and method of reduced reference frame search in video encoding is disclosed.

公开(公告)号：BRPI0608229A2

公开(公告)日：2009-11-24

申请号：BRPI0608229

申请日：2006-03-10

Applicant: QUALCOMM INC

Inventor： RAVEENDRAN VIJAYALAKSHMI R ,  TIAN TAO

IPC: H04N7/26 ,  G06T9/00 ,  H04N7/30 ,  H04N7/50

Abstract: Methods and apparatus encode video at a targeted bit rate and yet permit variation of a Quantization Parameter (QP) to encode video of varying complexity with relatively consistent visual quality. Constant bit rate (CBR) encoding is desirable in many applications, such as in transmission or broadcasting environments. However, conventional CBR techniques compromise visual quality. Disclosed techniques permit adaptive variation in a QP value and provide the improved visual encoding available in variable bit rate (VBR) schemes while maintaining enough adherence to a targeted bit rate to be applicable to CBR environments.

公开(公告)号：NO20081605L

公开(公告)日：2008-06-25

申请号：NO20081605

申请日：2008-04-01

Applicant: QUALCOMM INC

Inventor： RAVEENDRAN VIJAYALAKSHMI R ,  SHI FANG ,  CHEN PEISONG ,  OGUZ SEYFULLAH HALIT ,  BHAMIDIPATI PHANIKUMAR ,  WALKER GORDON KENT ,  TIAN TAO ,  SUBRAMANIA SITARAMAN GANAPATHY

IPC: H04N7/26 ,  H04N5/44 ,  H04N19/89

Abstract: A method of increasing the error resilience of encoded multimedia data, the method comprising obtaining content information of multimedia data, wherein the content information includes content classifications for portions of the multimedia data, each content classification for a portion determined by a texture value associated with spatial complexity of the portion, and a motion value associated with temporal complexity of the portion; and encoding portions of the multimedia data as intra-coded blocks or inter-coded blocks based on the content classification.

公开(公告)号：AR058949A1

公开(公告)日：2008-03-05

申请号：ARP070100075

申请日：2007-01-08

Applicant: QUALCOMM INC

Inventor： CHUNG SEONG TAEK ,  MURTHY VINAY ,  TIAN TAO ,  MUKKAVILLI KRISHNA KIRAN

IPC: H04L27/26

Abstract: Métodos y aparatos para el rastreo de la frecuencia de una senal recibida. En un aspecto, se provee un método en el que la senal recibida comprende uno o más símbolos que tienen una estructura periodica. El método comprende recibir una pluralidad de muestras de un símbolo seleccionado que comprende senales piloto enmaranadas con datos y determinar un tamano de ventana y un factor de periodicidad. El método también comprende acumular una correlacion entre muestras en una primera ventana y muestras en una segunda ventana a efectos de producir un valor acumulado de correlacion, teniendo las ventanas primera y segunda un tamano y una separacion basados en el tamano de ventana y en el factor de periodicidad, respectivamente, y derivar una estimacion del error de frecuencia sobre la base del valor acumulado de la correlacion.