公开(公告)号：BRPI0806523A2

公开(公告)日：2014-04-22

申请号：BRPI0806523

申请日：2008-01-07

Applicant: QUALCOMM INC

Inventor： SAGETONG PHOOM ,  CHUNG HYUKJUNE ,  KARCZEWICZ MARTA

Abstract: This disclosure describes techniques for coding information in a scalable video coding (SVC) scheme that supports spatial scalability. In one example, a method of coding information in a SVC scheme comprises coding first video blocks defined in a base layer of the SVC scheme, and coding second video blocks defined in an enhancement layer of the SVC scheme, wherein the second video blocks provide spatial scalability enhancement relative to the first video blocks. The coding of the second video blocks includes performing inter-layer prediction for the enhancement layer relative to the base layer for a first subset of the second video blocks that fully overlap the first video blocks, and performing inter-layer prediction for the enhancement layer relative to the base layer for a second subset of the second video blocks that partially overlap the first video blocks.

公开(公告)号：CA2673875C

公开(公告)日：2013-07-09

申请号：CA2673875

申请日：2008-01-04

Applicant: QUALCOMM INC

Inventor： KARCZEWICZ MARTA ,  CHUNG HYUKJUNE ,  SAGETONG PHOOM

IPC: H04N7/26

Abstract: This disclosure describes techniques for coding an enhancement layer in a scalable video coding (SVC) scheme. The techniques may be used in variable length coding of refinement coefficients of an enhancement layer of a SVC scheme. According to this disclosure, a method may comprise determining first statistics associated with a first type of video block. determining second statistics associated with a second type of video block, selecting a first variable length coding (VLC) table from a plurality of VLC tables to be used in coding the first type of video block based on the first statistics, selecting a second VLC table from the plurality of VLC tables to be used in coding the second type of video block based on the second statistics, coding video blocks of the first type based on the first VLC table, and coding video blocks of the second type based on the second VLC table.

公开(公告)号：AT508567T

公开(公告)日：2011-05-15

申请号：AT05749640

申请日：2005-05-13

Applicant: QUALCOMM INC

Inventor： GARUDADRI HARINATH ,  SAGETONG PHOOM ,  NANDA SANJIV ,  LUNDBY STEIN

IPC: H04L29/06 ,  H04B7/00 ,  H04B7/216 ,  H04L12/28 ,  H04L12/56 ,  H04L12/66 ,  H04N7/26 ,  H04W28/06 ,  H04W72/12 ,  H04W84/04 ,  H04W88/18

Abstract: Methods and apparatus are described for transmitting information units over a plurality of constant bit rate communication channel. The techniques include encoding the information units, thereby creating a plurality of data packets. The encoding is constrained such that the data packet sizes match physical layer packet sizes of the communication channel. The information units may include a variable bit rate data stream, multimedia data, video data, and audio data. The communication channels include CMDA channels, WCDMA, GSM channels, GPRS channels, and EDGE channels.

公开(公告)号：AT417436T

公开(公告)日：2008-12-15

申请号：AT05749459

申请日：2005-05-13

Applicant: QUALCOMM INC

Inventor： GARUDADRI HARINATH ,  SAGETONG PHOOM ,  NANDA SANJIV

IPC: H04L12/28 ,  H04B7/00 ,  H04B7/216 ,  H04L12/56 ,  H04L12/66 ,  H04L29/06 ,  H04N7/26 ,  H04W28/06 ,  H04W72/12 ,  H04W84/04 ,  H04W88/18

Abstract: Methods and apparatus are described for transmitting information units over a plurality of constant bit rate communication channel. The techniques include encoding the information units, thereby creating a plurality of data packets. The encoding is constrained such that the data packet sizes match physical layer packet sizes of the communication channel. The information units may include a variable bit rate data stream, multimedia data, video data, and audio data. The communication channels include CMDA channels, WCDMA, GSM channels, GPRS channels, and EDGE channels.

公开(公告)号：CA2673884A1

公开(公告)日：2008-07-17

申请号：CA2673884

申请日：2008-01-07

Applicant: QUALCOMM INC

Inventor： KARCZEWICZ MARTA ,  CHUNG HYUKJUNE ,  SAGETONG PHOOM

IPC: H04N19/13 ,  H04N19/60

Abstract: Variable length coding (VLC) techniques are described for coded block pat terns (CBPs) used in block-based video coding. In VLC of CBPs, patterns of t ransform coefficients that are more likely to occur are coded with shorter c odes, while patterns of coefficients that are less likely to occur are coded with longer codes. According to the techniques of this disclosure, several different VLC tables are stored in the coding devices. During the encoding a nd decoding processes, one of the VLC tables is selected and used to perform the coding of CBPs for a given video block. The table may be selected based on a number of neighboring video blocks to the current video block that inc lude non-zero transform coefficients. The techniques may be particularly use ful in the coding of video blocks of enhancement layers in scalable video co ding (SVC).

公开(公告)号：CA2644505A1

公开(公告)日：2007-10-11

申请号：CA2644505

申请日：2007-03-29

Applicant: QUALCOMM INC

Inventor： SAGETONG PHOOM ,  GARUDADRI HARINATH ,  SRINIVASAMURTHY NAVEEN B ,  LUDWIN ALBERT SCOTT ,  CHUNG HYUKJUNE ,  REZNIK YURIY

IPC: G06F17/14

Abstract: Techniques for efficiently performing full and scaled transforms on data received via full and scaled interfaces, respectively, are described and comprise (1) performing a first transform on a block of first input values to obtain a block of first output values by scaling the block to obtain scaled input values, performing a scaled one-dimensional (1D) transform on each row of the block, and performing a scaled 1D transform on each column of the block; and (2) performing a second transform on a block of second input values to obtain a block of second output values by performing a scaled 1D transform on each row of the block, performing a scaled 1D transform on each column of the block, and scaling the block.

公开(公告)号：MXPA06013211A

公开(公告)日：2007-03-01

申请号：MXPA06013211

申请日：2005-05-13

Applicant: QUALCOMM INC

Inventor： GARUDADRI HARINATH ,  SAGETONG PHOOM ,  NANDA SANJE

IPC: H04L12/00 ,  H04B7/00 ,  H04B7/216 ,  H04L12/28 ,  H04L12/56 ,  H04L12/66 ,  H04L29/06 ,  H04N7/26 ,  H04W28/06 ,  H04W72/12 ,  H04W84/04 ,  H04W88/18

Abstract: Se describen los metodos y aparatos para mejorar la transmision de informacion en canales de comunicacion inalambrica; estas tecnicas incluyen determina los canales de comunicacion disponibles para transmitir la informacion y determinar los tamanos posibles del paquete de capa fisica de los canales disponibles; se divide una unidad de informacion en partes en donde se selecciona el tamano de las partes para que coincidan con uno de los tamanos del paquete de capa fisica de los canales de comunicacion disponibles; otro aspecto es dividir la informacion en un numero de porciones que corresponda al numero de transmisiones que ocurren durante el intervalo de unidad de informacion y asignar cada division a una transmision correspondiente; pueden utilizarse las tecnicas para varios tipos de informacion, tal como datos multimedia, flujos de datos de velocidad de bit variable, o datos de audio; pueden utilizarse tambien las tecnicas con varios en las interfaces aereas, tal como el Sistema Global de Comunicacion Movil (GSM), Servicio de Radio de Paquete General (GPRS), Entorno GSM de Datos Mejorado (EDGE), o normas basadas en CDMA, tales como TIA/EIA-95-B (IS-95), TIA/EIA-98-C (IS-98), IS2000, HRPD, cdma2000, CDMA de Banda Ancha (WCDMA), y otras.

公开(公告)号：MXPA06013193A

公开(公告)日：2007-02-14

申请号：MXPA06013193

申请日：2005-05-13

Applicant: QUALCOMM INC

Inventor： GARUDADRI HARINATH ,  HSU RAYMOND T-S ,  SAGETONG PHOOM

IPC: H04L29/00 ,  H04B7/00 ,  H04B7/216 ,  H04L12/00 ,  H04L12/28 ,  H04L12/56 ,  H04L12/66 ,  H04L29/06 ,  H04N7/26 ,  H04W28/06 ,  H04W72/12 ,  H04W84/04 ,  H04W88/18

Abstract: Se describen metodos y aparatos para mejorar la transmision de datos de multimedia sobre canales de comunicacion inalambrica; estas tecnicas incluyen determinar un tamano de paquete de capa fisica del sistema de comunicacion alambica y determinar un tamano maximo de un titulo comprimido; entonces, dividir una unidad de informacion, en donde el tamano de las particiones son seleccionadas de tal forma que despues que una particion es codificada y el titulo comprimido es el tamano del paquete de capa fisica, o menos; las tecnicas se pueden utilizar para varios tipos de informacion, tales como datos de multimedia, corrientes variables de datos de bit corrientes de video, corriente de teleconferencia de video o voz sobre IP; tambien se pueden utilizar las tecnicas con varias interfaces aereas, tales como, Sistema Global para Comunicacion Movil (GSM), Servicio General de Radio Paquete (GPRS), Ambiente mejorado GSN de datos (EDGE), o estandares basados en CDMA, tales como TIA/EIA-95-B, TIA/EIA-98-C (IS-98), IS2000, HDRP, CDMA2000, CDMA de banda ancha (WCDMA) y otros.

公开(公告)号：CA2566126A1

公开(公告)日：2005-12-01

申请号：CA2566126

申请日：2005-05-13

Applicant: QUALCOMM INC

Inventor： GARUDADRI HARINATH ,  NANDA SANJIV ,  SAGETONG PHOOM

IPC: H04N7/52 ,  H04B7/00 ,  H04B7/216 ,  H04L12/28 ,  H04L12/56 ,  H04L12/66 ,  H04L29/06 ,  H04N7/26 ,  H04W28/06 ,  H04W72/12 ,  H04W84/04 ,  H04W88/18

Abstract: Methods and apparatus are described for transmitting information units over a plurality of constant bit rate communication channel. The techniques include encoding the information units, thereby creating a plurality of data packets. The encoding is constrained such that the data packet sizes match physical layer packet sizes of the communication channel. The information units may include a variable bit rate data stream, multimedia data, video data, and audio data. The communication channels include CMDA channels, WCDMA, GSM channels, GPRS channels, and EDGE channels.

公开(公告)号：CA2566124A1

公开(公告)日：2005-12-01

申请号：CA2566124

申请日：2005-05-13

Applicant: QUALCOMM INC

Inventor： GARUDADRI HARINATH ,  SAGETONG PHOOM ,  NANDA SANJIE

IPC: H04L12/28 ,  H04B7/00 ,  H04B7/216 ,  H04L12/56 ,  H04L12/66 ,  H04L29/06 ,  H04N7/26 ,  H04W28/06 ,  H04W72/12 ,  H04W84/04 ,  H04W88/18

Abstract: Methods and apparatus are described for transmitting information units over a plurality of constant bit rate communication channel. The techniques include encoding the information units, thereby creating a plurality of data packets. The encoding is constrained such that the data packet sizes match physical layer packet sizes of the communication channel. The information units may include a variable bit rate data stream, multimedia data, video data, and audio data. The communication channels include CMDA channels, WCDMA, GSM channels, GPRS channels, and EDGE channels.