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    Method and apparatus for frame accurate access of digital audio-visual information
    51.
    发明授权
    Method and apparatus for frame accurate access of digital audio-visual information 失效
    用于数字视听信息的帧准确访问的方法和装置

    公开(公告)号：US5659539A

    公开(公告)日：1997-08-19

    申请号：US502480

    申请日：1995-07-14

    申请人： Mark A. Porter ,  Dave Pawson

    发明人： Mark A. Porter ,  Dave Pawson

    IPC分类号： G11B27/031 ,  H04N7/173 ,  H04N7/24 ,  H04N7/26 ,  H04N7/46 ,  H04N7/50 ,  H04N21/232 ,  H04N21/238 ,  H04N21/2387 ,  H04N21/239 ,  H04N21/24 ,  H04N21/43 ,  H04N21/44 ,  H04N21/472 ,  H04N21/6377 ,  H04N21/658 ,  H04N21/6587 ,  H04N21/845 ,  H04N21/8547 ,  H04N21/8549 ,  H04L5/00

    CPC分类号： H04N7/17336 ,  G11B27/031 ,  H04N19/115 ,  H04N19/132 ,  H04N19/152 ,  H04N19/162 ,  H04N19/172 ,  H04N19/176 ,  H04N19/46 ,  H04N19/587 ,  H04N19/61 ,  H04N19/70 ,  H04N21/232 ,  H04N21/23805 ,  H04N21/2387 ,  H04N21/2393 ,  H04N21/2402 ,  H04N21/4305 ,  H04N21/44004 ,  H04N21/47202 ,  H04N21/6377 ,  H04N21/658 ,  H04N21/6587 ,  H04N21/8455 ,  H04N21/8547 ,  H04N21/8549 ,  G11B2020/00072 ,  G11B2220/20 ,  G11B2220/415 ,  H04N19/146

    摘要： A method and apparatus for use in a digital video delivery system is provided. A digital representation of an audio-visual work, such as an MPEG file, is parsed to produce a tag file. The tag file includes information about each of the frames in the audio-visual work. During the performance of the audio-visual work, data from the digital representation is sent from a video pump to a decoder. Seek operations are performed by causing the video pump to stop transmitting data from the current position in the digital representation, and to start transmitting data from a new position in the digital representation. The information in the tag file is inspected to determine the new position from which to start transmitting data. To ensure that the data stream transmitted by the video pump maintains compliance with the applicable video format, prefix data that includes appropriate header information is transmitted by said video pump prior to transmitting data from the new position. Fast and slow forward and rewind operations are performed by selecting video frames based on the information contained in the tag file and the desired presentation rate, and generating a data stream containing data that represents the selected video frames. A video editor is provided for generating a new video file from pre-existing video files. The video editor selects frames from the pre-existing video files based on editing commands and the information contained in the tag files of the pre-existing video files. A presentation rate, start position, end position, and source file may be separately specified for each sequence to be created by the video editor.

    摘要翻译： 提供一种用于数字视频传送系统的方法和装置。 视频工作（例如MPEG文件）的数字表示被解析以产生标签文件。 标签文件包括有关视听工作中每个帧的信息。 在执行视听工作期间，来自数字表示的数据从视频泵发送到解码器。 通过使视频泵停止从数字表示中的当前位置发送数据并且开始从数字表示中的新位置开始发送数据来执行搜索操作。 检查标签文件中的信息以确定开始发送数据的新位置。 为了确保由视频泵发送的数据流保持符合适用的视频格式，在从新位置发送数据之前，所述视频泵发送包括适当头信息的前缀数据。 通过基于包含在标签文件中的信息和期望的呈现速率来选择视频帧，并且生成包含表示所选择的视频帧的数据的数据流来执行快速和慢速的前进和后退操作。 提供视频编辑器，用于从先前存在的视频文件生成新的视频文件。 视频编辑器根据编辑命令和包含在预先存在的视频文件的标签文件中的信息从预先存在的视频文件中选择帧。 可以为由视频编辑器创建的每个序列分别指定演示速率，开始位置，结束位置和源文件。

    METHOD, APPARATUS, STORAGE MEDIA AND PROGRAM PRODUCT FOR VIDEO DECODING
    54.
    发明公开
    METHOD, APPARATUS, STORAGE MEDIA AND PROGRAM PRODUCT FOR VIDEO DECODING 审中-公开

    公开(公告)号：US20240275997A1

    公开(公告)日：2024-08-15

    申请号：US18567933

    申请日：2022-07-26

    申请人： BEIJING ZITIAO NETWORK TECHNOLOGY CO., LTD.

    发明人： Chao MA

    IPC分类号： H04N19/42 ,  G11B20/00

    CPC分类号： H04N19/42 ,  G11B20/00007 ,  G11B2020/00072

    摘要： Embodiments of the present disclosure provide a method, an apparatus, an electronic device, a computer-readable storage medium, a computer program product, and a computer program for video decoding. The method obtains playback address information of a video to be played, the playback address information carrying encoding format information of the video to be played; obtains the video to be played in accordance with the playback address information; and, in progress of obtaining the video to be played asynchronously, acquires a hardware decoder based on the encoding format information of the video to be played; and decodes the obtained video to be played with the hardware decoder. Embodiments of the present disclosure carry the encoding format information of the video to be played in the playback address information of the video, so that the asynchronous acquisition of the hardware decoder can be adopted in progress of the startup of video playback.

    IMAGE DECODING DEVICE AND STILL FRAME IMAGE DECODING METHOD THEREOF
    55.
    发明公开
    IMAGE DECODING DEVICE AND STILL FRAME IMAGE DECODING METHOD THEREOF 审中-公开

    公开(公告)号：US20240265947A1

    公开(公告)日：2024-08-08

    申请号：US18467827

    申请日：2023-09-15

    申请人： SigmaStar Technology Ltd.

    发明人： Bo-Zai LI ,  Song RAO

    IPC分类号： G11B20/10 ,  G11B20/00 ,  G11B27/031 ,  H04N19/172

    CPC分类号： G11B20/10527 ,  G11B20/00007 ,  G11B27/031 ,  H04N19/172 ,  G11B2020/00072

    摘要： A still frame image decoding method includes: decoding a first frame in first data of multiple data according to a reference frame at a reference location of a memory, and storing the first frame to the reference location to overwrite at least one part of the reference frame; selecting the first data from the multiple data and decoding a second frame in the first data according to the first frame at the reference location in response to a still frame command; adjusting the second frame, and storing the adjusted second frame to an output location of the memory; preserving the first frame at the reference location; and again decoding the second frame according to the first frame at the reference location according to an end command, so as to store the second frame to the reference location to overwrite at least one part of the first frame.