Synchronizing an audio-visual stream synchronized to a clock with a
video display that is synchronized to a different clock
    1.
    发明授权
    Synchronizing an audio-visual stream synchronized to a clock with a video display that is synchronized to a different clock 失效
    将与时钟同步的视听流同步到与不同时钟同步的视频显示

    公开(公告)号:US5951690A

    公开(公告)日:1999-09-14

    申请号:US762608

    申请日:1996-12-09

    摘要: A DVD player that integrates a DVD device into a personal computer is provided. As such, the personal computer is able to output audio-visual works from a DVD CD-ROM. When integrating a DVD device with a personal computer, various problems must be overcome. For example, in a personal computer, the video display is controlled by a graphics controller, and in order to render an audio-visual stream in a personal computer, the audio-visual stream and the graphics controller must be synchronized. The synchronization problem arises because the graphics controller only displays data at the beginning of 33.4 millisecond time intervals. Thus, although the audio portion may be played almost immediately, the video portion may have to wait for up to 33.4 milliseconds before being displayed. In this manner, the audio portion and the video portion become unsynchronized which means that the audio portion plays before the corresponding video portion is displayed. The DVD player solves this problem by synchronizing the start of the audio-visual stream with the graphics controller so that the time at which a video sequence is displayed coincides with one of the graphics controller's 33.4 millisecond time intervals.

    摘要翻译: 提供将DVD设备集成到个人计算机中的DVD播放器。 因此,个人计算机能够从DVD CD-ROM输出视听作品。 当将DVD设备与个人计算机集成时,必须克服各种问题。 例如,在个人计算机中,视频显示由图形控制器控制,并且为了在个人计算机中呈现视听流,视听流和图形控制器必须同步。 出现同步问题是因为图形控制器仅在33.4毫秒的时间间隔开始显示数据。 因此,虽然可以立即播放音频部分,但是在显示之前视频部分可能必须等待多达33.4毫秒。 以这种方式,音频部分和视频部分变得不同步,这意味着音频部分在相应的视频部分被显示之前播放。 DVD播放机通过将视听流的开始与图形控制器同步来解决这个问题,使得显示视频序列的时间与图形控制器的33.4毫秒时间间隔一致。

    Three dimensional forming
    2.
    发明授权
    Three dimensional forming 失效
    三维成型

    公开(公告)号:US5695708A

    公开(公告)日:1997-12-09

    申请号:US577499

    申请日:1995-12-22

    IPC分类号: B29C67/00 B29C35/08 B29C41/02

    CPC分类号: B29C67/007 B29C67/0092

    摘要: Three-dimensional modeling method and apparatus for receiving information with respect to a three-dimensional object to be formed and for forming a three-dimensional physical object through the use of two building materials and a third filling material. The first building material is typically a photopolymer. The second building material has at least one of the following characteristics: elastomeric properties, engineering plastic thermoset properties, is suitable for lost wax casting, is impregnated with metallic materials, is impregnated with ceramic material, or is sinterable. The filling material is typically a support material to provide structural support to the model during building.

    摘要翻译: 用于接收关于要形成的三维物体的信息并且通过使用两种建筑材料和第三填充材料形成三维物体的三维建模方法和装置。 第一种建筑材料通常是光聚合物。 第二种建筑材料具有以下特征中的至少一个:弹性体性质,工程塑料热固性质,适用于失蜡铸造,用金属材料浸渍,用陶瓷材料浸渍或可烧结。 填充材料通常是在建筑过程中为模型提供结构支撑的支撑材料。