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    Improving error resilience using out of band directory information
    2.
    发明专利
    Improving error resilience using out of band directory information 有权
    使用带状目录信息改善错误恢复力

    公开(公告)号：JP2011135609A

    公开(公告)日：2011-07-07

    申请号：JP2011045097

    申请日：2011-03-02

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

    Inventor： NAGARAJ THADI M ,  SILBERGER AMNON ,  COLLINS BRUCE ,  WALKER GORDON KENT ,  LOUKAS MIKE ,  RAVEENDRAN VIJAYALAKSHMI R ,  SHI FANG

    IPC: H04L12/56

    CPC classification number: H04L29/06027 ,  H04L1/0083 ,  H04L65/607 ,  H04L65/80

    Abstract: PROBLEM TO BE SOLVED: To provide a method and apparatus to improve error resilience by generating a directory including header information. SOLUTION: This invention relates to a method and an apparatus to improve error resilience in processing a multimedia bitstream. According to the method 300, a directory of header information is generated for a multimedia bitstream (S315). Directory information includes packet header information associated with the multimedia bitstream. The directory information may be transmitted to a receiver along with the multimedia bitstream (S320). A receiver of the multimedia bitstream and the directory can utilize the header information to identify and locate packets within the received bitstream and subsequent to erroneous data. By identifying and locating packets that may otherwise be discarded, the receiver may be able to improve error recovery and decoding of multimedia data. COPYRIGHT: (C)2011,JPO&INPIT

    Abstract translation: 要解决的问题：提供一种通过生成包括标题信息的目录来提高错误恢复性的方法和装置。 解决方案：本发明涉及一种改善处理多媒体位流中的错误恢复能力的方法和装置。 根据方法300，为多媒体比特流生成头信息的目录（S315）。 目录信息包括与多媒体比特流相关联的分组报头信息。 目录信息可以与多媒体比特流一起发送到接收机（S320）。 多媒体比特流和目录的接收机可以利用标题信息来识别和定位接收的比特流内的分组，并且在错误的数据之后。 通过识别和定位可能被丢弃的分组，接收机可能能够改进多媒体数据的错误恢复和解码。 版权所有（C）2011，JPO＆INPIT

    6.
    发明专利
    未知

    公开(公告)号：BR0316185A

    公开(公告)日：2005-09-27

    申请号：BR0316185

    申请日：2003-11-07

    Applicant: QUALCOMM INC

    Inventor： LENE RICHARD D ,  SILBERGER AMNON

    IPC: G06T9/00 ,  H04B1/69 ,  G06K9/36

    Abstract: Video images in, e.g., a multimedia stream are scanned prior to compression for transmission to recognize symbols, such as graphics symbols and alpha-numeric characters. The types, positions, sizes, etc. of the symbols are recorded to render symbol information, and then the images are compressed with or without compressing the symbols, which may be removed from the images prior to compression if desired. The compressed video and symbol information are sent to a receiver, which decompresses the video, optionally transforms the symbols, and then inserts the symbols where indicated by the symbol information.

    Methods and apparatus for measuring nonlinear effects in a communication system and for selecting channels on the basis of the results
    7.
    发明专利
    Methods and apparatus for measuring nonlinear effects in a communication system and for selecting channels on the basis of the results 未知

    公开(公告)号：AU742826B2

    公开(公告)日：2002-01-10

    申请号：AU1189199

    申请日：1998-10-14

    Applicant: QUALCOMM INC

    Inventor： SILBERGER AMNON ,  BUTLER BRIAN ,  SCHIFF LEONARD

    IPC: H04B17/00 ,  H04Q7/38 ,  H04B7/26 ,  G01R23/20

    Abstract: A method and apparatus for accurately determining the operating characteristics or impact of nonlinear effects on devices or communication systems transferring orthogonally coded spread-spectrum communication signals. A Walsh Power Ratio, is used to more accurately determine system response. This information can be used by power control loops in controlling or adjusting the operation of nonlinear elements or stages such as high power amplifiers in orthogonal CDMA communication systems to provide improved system response. The information can also be employed in assigning channels to systems users, and to proceed with physical changes to system hardware. The measurements used to formulate the WPR can be made to individual components or to entire systems by injecting communication signals in multiple channels containing data, and leaving at least one empty channel. The received power per channel on the output side of the system or device is then measured. A ratio of power density for the empty to the active channels is then formed. The determination of WPR for a system or components can be realized during periods of operation through periodic transfer of test signals either at allocated times or by interleaving among existing traffic signals in the system.

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