公开(公告)号：WO1996007272A1

公开(公告)日：1996-03-07

申请号：PCT/US1995010972

申请日：1995-08-30

Applicant: MICROPOLIS CORPORATION

Inventor： MICROPOLIS CORPORATION ,  ANDERSON, Michael, H.

IPC: H04N07/173

CPC classification number: H04N21/47202 ,  H04N7/17318

Abstract: Digitally encoded movies are stored in a mass storage unit, Redundant Array of Independent Drives (RAID) (12). A video server (22) retrieves movies requested from users and transmits the encoded data to processors at user locations. The processors decode the received data to produce video pictures displayed on monitors (28). Temporal instantaneous digital data rate signatures for the movies are computed and stored, and a current composite signature (30) is computed by summing the signatures for all movies currently being shown. When an additional movie is requested, the successively time shifted signature (32) for the additional movie is combined with the current composite signature (30) to produce a new composite signature (34). The new composite signature is recalculated with each time shift as required until no part of the combined signature exceeds the maximum data rate capability of the server. Retrieval and showing of the additional movie is initiated at the time corresponding to the total time shift.

Abstract translation: 数字编码电影存储在大容量存储单元，独立驱动器冗余阵列（RAID）（12）中。 视频服务器（22）检索从用户请求的电影并将编码的数据发送到用户位置的处理器。 处理器对接收到的数据进行解码以产生显示在监视器（28）上的视频图像。 计算和存储电影的时间瞬时数字数据速率签名，并且通过对当前正在显示的所有电影的签名求和来计算当前复合签名（30）。 当请求附加电影时，用于附加电影的连续时移签名（32）与当前复合签名（30）组合以产生新的复合签名（34）。 新的复合签名将根据需要重新计算每次时移，直到组合签名的任何部分超过服务器的最大数据速率能力为止。 在与总时间偏移相对应的时间开始检索和显示附加电影。