公开(公告)号：US07302169B2

公开(公告)日：2007-11-27

申请号：US10747082

申请日：2003-12-30

申请人： Noriyuki Ihara

发明人： Noriyuki Ihara

IPC分类号： H04N5/91 ,  H04N5/00 ,  H04J3/06

CPC分类号： H04N9/8042 ,  G11B27/005 ,  G11B27/105 ,  G11B27/3027 ,  G11B27/329 ,  G11B2220/20 ,  H04N5/781 ,  H04N9/8063

摘要： The invention is directed to the provision of a moving image data playback method, and more particularly, an MPEG data playback method that can randomly access MPEG data stored at a VBR. The playback method comprises: storing in a table an average bit rate computed from time information at the beginning and end of stored moving image data; detecting and storing the time information and position information of randomly accessible picture groups one at the beginning of the moving image data and the other at the end thereof, and computing a picture group unit time from the number of frames between adjacent picture groups and storing the result in the table; computing a point to be accessed, based on the average bit rate and other information stored in the table; and starting playback from the computed point to be accessed, and storing in the table the time information and position information of the picture groups detected during the playback and the average bit rate between each picture group computed from the detected time information and position information.

摘要翻译： 本发明旨在提供一种运动图像数据重放方法，更具体地说，涉及一种可以随机访问存储在VBR中的MPEG数据的MPEG数据重放方法。 播放方法包括：在表中存储从存储的运动图像数据的开始和结束的时间信息计算的平均比特率; 检测和存储在运动图像数据的开始处的随机可访问的图像组的时间信息和位置信息，并且在其结束处存储随机可访问的图像组的位置信息，并且从相邻图像组之间的帧数计算图像组单位时间并存储 结果在表; 基于存储在表中的平均比特率和其他信息计算要访问的点; 并从计算出的要访问的点开始重放，并且在表中存储在回放期间检测到的图像组的时间信息和位置信息以及根据检测到的时间信息计算出的每个图像组之间的平均位速率和位置信息。