2.
    发明专利
    未知

    公开(公告)号:DE69619078T2

    公开(公告)日:2002-10-17

    申请号:DE69619078

    申请日:1996-11-27

    Applicant: IBM

    Abstract: A method and apparatus for the automatic access control to multimedia presentations at the receiver in accordance with a viewer selected access mode and access classification data encoded into the multimedia presentation. Screening classification codes (SCCs) are embedded in the Audio Visual Material (AVM) delivered to a subscribers home station. The screening classification codes identify the type of content that follows in the AVM stream. For instance, violent content (video and/or audio) provided to a home station may contain a SCC that indicates violent scenes or violent action is forth coming in the AVM stream. The home station takes the SCC that are encoded and/or embedded in the AVM stream and applies a subscriber selected screening criteria. The screening criteria or suppression criteria are AVM manipulation commands. These AVM manipulation commands can blank the audio and/or video, cause the display of the last acceptable frame, perform obscuration transforms on the AVM stream or otherwise manipulate the audio and/or video portions of the AVM stream. The subscriber associates an AVM manipulation command with each of the available SCCs. The home station applies the subscriber desired manipulation commands to the AVM stream. Information on the subscriber selections are provided to an upstream node for subscriber behavior collection analysis.

    SYSTEMS AND METHODS FOR TRANSMITTING AND RECEIVING DATA IN CONNECTION WITH A COMMUNICATIONS STACK IN A COMMUNICATIONS SYSTEM

    公开(公告)号:CA2227366A1

    公开(公告)日:1998-08-19

    申请号:CA2227366

    申请日:1998-01-16

    Applicant: IBM

    Abstract: Management of datastream construction prior to transmission of the datastream ac ross a channel of a communications system by providing for data blocking while reducing movement or copying of the data improves the performance in a communications system. Multipl e header segments received from a higher layer in the communications stack are copied int o the datastream header area of a datastream such that the header segments are sequentially store d in the datastream header area. A datastream buffer list having entries referencing the datastream header area is generated. Buffer list entries referencing data segments received from higher la yers in the communications stack are also stored in the datastream buffer list. The data seg ments are not physically moved or copied into the datastream during processing by the communic ations stack. Rather, a "virtual" datastream is generated by the communications stack for tran smission without physically moving or copying the data segment. The datastream is transmitted acr oss the channel by the system input/output interface by first writing the datastream header area re ferenced by the datastream buffer list directly into the channel, and the data segments directly from their original storage location into the channel of the communications system using the datastr eam buffer list entries.

    4.
    发明专利
    未知

    公开(公告)号:DE69619078D1

    公开(公告)日:2002-03-21

    申请号:DE69619078

    申请日:1996-11-27

    Applicant: IBM

    Abstract: A method and apparatus for the automatic access control to multimedia presentations at the receiver in accordance with a viewer selected access mode and access classification data encoded into the multimedia presentation. Screening classification codes (SCCs) are embedded in the Audio Visual Material (AVM) delivered to a subscribers home station. The screening classification codes identify the type of content that follows in the AVM stream. For instance, violent content (video and/or audio) provided to a home station may contain a SCC that indicates violent scenes or violent action is forth coming in the AVM stream. The home station takes the SCC that are encoded and/or embedded in the AVM stream and applies a subscriber selected screening criteria. The screening criteria or suppression criteria are AVM manipulation commands. These AVM manipulation commands can blank the audio and/or video, cause the display of the last acceptable frame, perform obscuration transforms on the AVM stream or otherwise manipulate the audio and/or video portions of the AVM stream. The subscriber associates an AVM manipulation command with each of the available SCCs. The home station applies the subscriber desired manipulation commands to the AVM stream. Information on the subscriber selections are provided to an upstream node for subscriber behavior collection analysis.

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