System and method for transferring concurrent multi-media streams over a
loosely coupled I/O bus
    61.
    发明授权
    System and method for transferring concurrent multi-media streams over a loosely coupled I/O bus 失效
    通过松散耦合的I / O总线传输并发多媒体流的系统和方法

    公开(公告)号:US6052744A

    公开(公告)日:2000-04-18

    申请号:US933675

    申请日:1997-09-19

    摘要: A multimedia system including a PCI bus master controller for transferring concurrent and independent video and audio data streams to video and audio devices. The controller includes a video request and DMA channel, a video sub-picture request and DMA channel, an audio request and DMA channel, and a decompressed video DMA and posted request channel for independently and concurrently transferring the data streams from host memory to the devices. The host processor builds lists of request packets in system memory and asynchronously submits the request packets to the controller. The request packets include commands which the request channels execute. The commands may include spinning on status conditions in registers of the multimedia devices, writing to registers of the devices, or performing bus master transfers of multimedia data streams from system memory to the devices. The device register accesses are performed by the controller on local buses thereby reducing PCI bus traffic.

    摘要翻译: 一种多媒体系统,包括用于将并发且独立的视频和音频数据流传输到视频和音频设备的PCI总线主控制器。 控制器包括视频请求和DMA通道,视频子图像请求和DMA通道,音频请求和DMA通道以及解压缩的视频DMA和发布的请求通道,用于独立并且同时地将数据流从主机存储器传送到设备 。 主机处理器在系统内存中构建请求数据包的列表,并将请求数据包异步地提交给控制器。 请求数据包包括请求通道执行的命令。 命令可以包括旋转多媒体设备的寄存器中的状态条件,写入设备的寄存器,或者从系统存储器到设备执行多媒体数据流的总线主传输。 设备寄存器访问由控制器在本地总线上执行,从而减少PCI总线流量。

    Sub-frame decoder with area dependent update rate for digital camcorder
transmission standard
    62.
    发明授权
    Sub-frame decoder with area dependent update rate for digital camcorder transmission standard 失效
    具有数字摄像机传输标准的区域相关更新速率的子帧解码器

    公开(公告)号:US6008853A

    公开(公告)日:1999-12-28

    申请号:US967559

    申请日:1997-11-12

    摘要: This invention is a method of decoding a stream of video image data transmitted as independent image frames consisting of plural marcoblocks transmitted in a nonsequential order. The method defines a sub-frame corresponding to a proper subset of the full frame. The method determines if a currently received macroblock is within the sub-frame. The method decodes the sub-frame. The sub-frame may be decoded at less than or equal to the frame rate of the video image data. A table has one entry for each macroblock that stores a transmission order within the video frame for the corresponding macroblock. The method determine if a current macroblock is within the sub-frame by reading the table. Each macroblock consists of a plurality of contiguous blocks and includes luminance data for any included blocks and chrominance data for the macroblock as a whole. The method optionally decodes the luminance data for each included block and ignores the chrominance data. The method decodes the sub-frame employing only data prior to an end of data marker or the end of a data group allocated to that block, and ignores data following an end of data marker. The method may also decode a full frame of video image data at a full frame decode rate less than the sub-frame decode rate. The method preferably employs a digital camcorder to generate the stream of video image data and a notebook computer for decoding and display.

    摘要翻译: 本发明是一种解码作为独立图像帧发送的视频图像数据流的方法,该独立图像帧由以非顺序发送的多个marcoblock组成。 该方法定义对应于全帧的正确子集的子帧。 该方法确定当前接收的宏块是否在子帧内。 该方法解码子帧。 子帧可以以小于或等于视频图像数据的帧速率被解码。 表格对于每个宏块具有一个条目,其存储在相应宏块的视频帧内的传输顺序。 该方法通过读表确定当前宏块是否在子帧内。 每个宏块由多个连续的块组成,并且包括用于整个宏块的任何包括块的亮度数据和色度数据。 该方法可选地解码每个包含的块的亮度数据,并忽略色度数据。 该方法仅使用在数据标记结束之前的数据或分配给该块的数据组的结束的子帧,并忽略数据标记结束之后的数据。 该方法还可以以小于子帧解码速率的全帧解码速率解码全帧的视频图像数据。 该方法优选采用数字摄像机来生成视频图像数据流和用于解码和显示的笔记本计算机。

    Dual compressed video bitstream camera for universal serial bus
connection
    63.
    发明授权
    Dual compressed video bitstream camera for universal serial bus connection 失效
    双压缩视频比特流摄像头,用于通用串行总线连接

    公开(公告)号:US5995150A

    公开(公告)日:1999-11-30

    申请号:US26865

    申请日:1998-02-20

    摘要: A method for presenting video on a local monitor and a remote monitor includes encoding an original video signal to produce a first compressed video signal. Using the first compressed video signal, the video signal is also encoded to produce a second compressed video signal. Both the first and second compressed video signals are transmitted to a local terminal at which the first and second compressed video signals are decoded to produce first and second decoded video signals. A first decoded version of the video signal is produced from a combination of the first and second decoded video signals. Only the first compressed video signal is transmitted to a remote terminal at which a second decoded version of the video signal is recovered from only the first compressed video signal.The first compressed video signal may be produced by motion compensation temporally encoding and spatially encoding the original video signal. The second compressed video signal may be produced by both spatially and motion compensation temporally decoding the first compressed video signal and subtracting each pixel of each picture thereof from a corresponding, spatially and temporally aligned pixel of a picture of the original video signal to form a difference video signal. The difference video signal is then only spatially encoded to produce the second compressed video signal.To produce the first decoded version of the original video signal, the first compressed video signal may be both spatially and motion compensation temporally decoded and the second decoded video signal may be only spatially decoded. Each pixel of each picture of the second decoded video signal may be added to a corresponding temporally and spatially aligned picture pixel of the first decoded video signal.

    摘要翻译: 用于在本地监视器和远程监视器上呈现视频的方法包括对原始视频信号进行编码以产生第一压缩视频信号。 使用第一压缩视频信号,视频信号也被编码以产生第二压缩视频信号。 第一和第二压缩视频信号都被发送到本地终端,在该本地终端处解码第一和第二压缩视频信号以产生第一和第二解码视频信号。 视频信号的第一解码版本由第一和第二解码视频信号的组合产生。 只有第一压缩视频信号被传送到远程终端,在远程终端处仅从第一压缩视频信号恢复视频信号的第二解码版本。 可以通过对原始视频信号进行时间编码和空间编码的运动补偿来产生第一压缩视频信号。 第二压缩视频信号可以通过空间和运动补偿在时间上解码第一压缩视频信号并从原始视频信号的图像的对应的空间和时间对齐的像素中减去其每个图像的每个像素来产生,以形成差分 视频信号。 差视频信号然后仅被空间编码以产生第二压缩视频信号。 为了产生原始视频信号的第一解码版本,第一压缩视频信号可以在空间上和时间上被解码的运动补偿,并且第二解码视频信号可以仅在空间上被解码。 第二解码视频信号的每个图像的每个像素可以被添加到第一解码视频信号的对应的时间和空间对准的图像像素。

    Interactive theater and feature presentation system
    66.
    发明授权
    Interactive theater and feature presentation system 失效
    互动剧场和功能演示系统

    公开(公告)号:US5835715A

    公开(公告)日:1998-11-10

    申请号:US849225

    申请日:1997-05-30

    申请人: Andrew A. Dahl

    发明人: Andrew A. Dahl

    摘要: An interactive system (10) for presenting information to members of an audience includes a main server (11), slave server (13), a video projector (19) for displaying information to all members of an audience, a memory in the main server and a laser disc unit connected to slave server for storing information related to a plurality of categories and a plurality of topics related to each categories, and a plurality of seat computers (16) connected through an audience response server to the main server (11). The main server (11) is responsive to category selection signals for controlling the video projector (19) to display the stored information which is first category choice of the audience. For each audience member who did not select the first category choice, the main server (11) controls the associated seat computer (16) to display the stored information related to another one of the categories selected by the audience member.

    摘要翻译: PCT No.PCT / US96 / 15832 Sec。 371日期1997年5月30日 102(e)日期1997年5月30日PCT提交1996年10月3日PCT公布。 公开号WO97 / 13207 日期1997年04月10日用于向观众的成员呈现信息的交互式系统(10)包括主服务器(11),从服务器(13),用于向观众的所有成员显示信息的视频投影仪(19) 主服务器中的存储器和连接到从服务器的激光盘单元,用于存储与多个类别相关的信息和与每个类别相关的多个主题;以及多个座位计算机(16),通过观众响应服务器连接到 主服务器(11)。 主服务器(11)响应于用于控制视频投影仪(19)的类别选择信号,以显示作为观众的第一类别选择的存储信息。 对于没有选择第一类别选择的每个观众成员,主服务器(11)控制相关联的座位计算机(16)显示与由观众成员选择的另一类别相关的存储信息。

    Display control system having a PCMCIA interface

    公开(公告)号:US5826044A

    公开(公告)日:1998-10-20

    申请号:US458690

    申请日:1995-06-02

    申请人: Hiroki Zenda

    发明人: Hiroki Zenda

    摘要: A portable computer comprising a PCMCIA card connector, a PCMCIA controller, a multimedia display controller, a moving-picture bus, a system bus, and a switching control circuit. The PCMCIA controller controls transfer of data to and from a PC card connected to the PCMCIA card connector. The multimedia display controller can process moving-picture data to display moving pictures. The moving-picture bus connects the PCMCIA controller and the multimedia display controller, for supplying moving-picture data only. The switching control circuit is incorporated in the PCMCIA controller, for connecting the PCMCIA card connector to the moving-picture bus or to the system bus.