11.
    发明专利
    未知

    公开(公告)号:BRPI0510961A

    公开(公告)日:2007-11-20

    申请号:BRPI0510961

    申请日:2005-05-13

    Applicant: QUALCOMM INC

    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.

    METHOD AND APPARATUS FOR ALLOCATION OF INFORMATION TO CHANNELS OF A COMMUNICATION SYSTEM

    公开(公告)号:CA2771943C

    公开(公告)日:2015-02-03

    申请号:CA2771943

    申请日:2005-05-13

    Applicant: QUALCOMM INC

    Abstract: Methods and apparatus are described for improving the transmission of information over wireless communication channels. These techniques include determining available communication channels for transmitting information and determining possible physical layer packet sizes of the available channels. An information unit is partitioned into portions wherein the size of the portions are selected so as to match one of the physical layer packet sizes of the available communication channels. Another aspect is partitioning the information into a number of slices that correspond to the number of transmissions that occur during the information unit interval and assigning each partition to a corresponding transmission. The techniques can be used for various types of information, such as multimedia data, variable bit rate data streams, video data, or audio data. The techniques can also be used with various over the air interfaces, such as, Global System for Mobile Communication (GSM), General Packet Radio Service (GPRS), Enhanced Data GSM Environment (EDGE), or standards based on CDMA such as TIA/EIA-95-B (IS- 95), TIA/EIA-98-C (IS-98), IS2000, HRPD, cdma2000, Wideband CDMA (WCDMA), and others.

    VARIABLE LENGTH CODING TECHNIQUES FOR CODED BLOCK PATTERNS

    公开(公告)号:CA2673884C

    公开(公告)日:2013-07-02

    申请号:CA2673884

    申请日:2008-01-07

    Applicant: QUALCOMM INC

    Abstract: Variable length coding (VLC) techniques are described for coded block patterns (CBPs) used in block-based video coding. In VLC of CBPs, patterns of transform coefficients that are more likely to occur are coded with shorter codes, 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 and 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 include non-zero transform coefficients. The techniques may be particularly useful in the coding of video blocks of enhancement layers in scalable video coding (SVC).

    ENVIO DE INFORMACION POR UN CANAL DE COMUNICACION.

    公开(公告)号:ES2366192T3

    公开(公告)日:2011-10-18

    申请号:ES05749640

    申请日:2005-05-13

    Applicant: QUALCOMM INC

    Abstract: Un procedimiento para transmitir información de capa de aplicación en un sistema de comunicación inalámbrica (100), comprendiendo el procedimiento: determinar (2004) tamaños posibles de paquete de capa física de una pluralidad de canales disponibles de comunicación de tasa de bits constante; establecer limitaciones para particionar unidades de información de capa de aplicación de manera que las particiones se dimensionen para que el tamaño de cada partición coincida con uno de los tamaños de paquete de la capa física determinados disponibles en la pluralidad de canales de comunicación disponibles inalámbrica de tasa de bits constante, caracterizado porque esta etapa comprende particionar una unidad de información de capa de aplicación en múltiples particiones descodificables de manera independiente, de manera que exista una correspondencia de uno a uno entre las unidades de información de capa de aplicación particionadas y los paquetes de la capa física comunicados por los canales de comunicación disponibles.

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