Device with MPE-FEC frame memory
    1.
    发明授权
    Device with MPE-FEC frame memory 有权
    具有MPE-FEC帧存储器的设备

    公开(公告)号:US08020071B2

    公开(公告)日:2011-09-13

    申请号:US12097768

    申请日:2006-12-08

    IPC分类号: H03M13/00

    CPC分类号: H04L49/9042 H04L49/90

    摘要: In transmission systems using digital video broadcasting standards for handheld terminals data is transmitted in bursts. Due to the restricted computing time, buffering of one or more bursts is necessary. The invention provides a memory optimalization for consecutive burst support. Thereby, a cyclic or non-cyclic memory model for a memory unit (19) of the device (1) for receiving bursts is provided.

    摘要翻译: 在使用用于手持终端的数字视频广播标准的传输系统中,以突发方式传输数据。 由于计算时间有限,需要缓冲一个或多个脉冲串。 本发明提供了用于连续突发支持的存储器最优化。 因此,提供了用于接收脉冲串的装置(1)的存储器单元(19)的循环或非循环存储器模型。

    Jitter Introduction In A Data Transmission System
    3.
    发明申请
    Jitter Introduction In A Data Transmission System 审中-公开
    数据传输系统中的抖动引言

    公开(公告)号:US20090007201A1

    公开(公告)日:2009-01-01

    申请号:US10596760

    申请日:2004-12-10

    IPC分类号: H04N7/173

    CPC分类号: H04N21/4305 H04N21/242

    摘要: Disclosed is a transmission system comprising a transmitter, at least one receiver and a data network coupling the transmitter and the receiver, whereby the at least one receiver comprises a dejitter mechanism. The transmitter comprises jitter means for introducing jitter into data on the network, and the dejitter mechanism is provided with a jitter control input for controlling an extent of dejitter. In pay per view applications this provides a means for gradually controlling the video and audio quality at the customers' premises.

    摘要翻译: 公开了一种包括发射机,至少一个接收机和耦合发射机和接收机的数据网络的传输系统,由此该至少一个接收机包括一个去抖动机制。 发射机包括用于将抖动引入网络中的数据的抖动装置,并且去抖动机构设置有用于控制消除抖动程度的抖动控制输入。 在付费视图应用中,这提供了逐渐控制客户场所的视频和音频质量的手段。

    DIGITAL VIDEO BROADCAST RECEIVER AND METHOD FOR RECEIVING DIGITAL VIDEO BROADCAST DATA
    4.
    发明申请
    DIGITAL VIDEO BROADCAST RECEIVER AND METHOD FOR RECEIVING DIGITAL VIDEO BROADCAST DATA 审中-公开
    数字视频广播接收机和接收数字视频广播数据的方法

    公开(公告)号:US20100223653A1

    公开(公告)日:2010-09-02

    申请号:US12733190

    申请日:2008-08-18

    IPC分类号: H04N5/44

    摘要: A digital video broadcast receiver for receiving data of a plurality of services (S1-S3) which are transmitted in bursts of data over a transmission channel is provided. The receiver comprises a rendering unit (HH) for rendering data of a selected first service (S1) from the plurality of services (S1-S3). The receiver furthermore comprises at least one memory unit (FM, SC) for caching at least one received burst of data associated to the selected first service (S1) of the plurality of services (S1-S3). The memory is furthermore used for caching at least a first part of a received burst of data of at least a second service (S2) of the plurality of services (S1-S3). The receiver furthermore comprises an input unit (HH) for inputting a zap command to switch the rendering of the first service (S1) to a second service (S2) of the plurality of services (S1-S3). The rendering unit (HH) is furthermore adapted to render at least the cached first part of the received burst of data of the second service (S2) when the zap command is received by the input unit (HH).

    摘要翻译: 提供了一种数字视频广播接收机,用于接收通过传输信道以数据突发方式发送的多个服务(S1-S3)的数据。 接收机包括用于从多个服务(S1-S3)呈现所选择的第一服务(S1)的数据的呈现单元(HH)。 接收机还包括至少一个存储单元(FM,SC),用于高速缓存与多个服务(S1-S3)中的所选择的第一服务(S1)相关联的至少一个接收到的数据突发。 此外,存储器还用于高速缓存多个服务(S1-S3)中的至少第二服务(S2)的所接收的数据突发的至少第一部分。 接收机还包括用于输入zap命令以将第一服务(S1)的呈现切换到多个服务(S1-S3)中的第二服务(S2)的输入单元(HH)。 再现单元(HH)还适于当输入单元(HH)接收到zap命令时,至少渲染所接收的第二服务的突发数据的第一部分(S2)。

    Device Providing Selective Error Correction Data Reception
    5.
    发明申请
    Device Providing Selective Error Correction Data Reception 审中-公开
    提供选择性纠错数据接收的设备

    公开(公告)号:US20090006926A1

    公开(公告)日:2009-01-01

    申请号:US12097677

    申请日:2006-12-12

    IPC分类号: H03M13/17 G06F11/07

    摘要: In transmission systems using digital video broadcasting standards for handheld terminals data is transmitted in bursts. A decoder unit (25) is provided to correct errors in the data. An error amount determination unit (30) is provided to determine, when the amount of error correction data for error correction is sufficient for a successful error correction. Therefore, in the average, power consumption of the device (1) may be reduced by an early receiver front-end switch-off.

    摘要翻译: 在使用用于手持终端的数字视频广播标准的传输系统中,以突发方式传输数据。 提供解码器单元(25)以校正数据中的错误。 提供误差量确定单元(30),用于确定用于纠错的纠错数据的量是否足以成功地进行纠错。 因此,平均而言,可以通过早期的接收机前端切断来减少设备(1)的功耗。

    Trick play signal generation for a digital video recorder using retrieved intra-encoded pictures and generated inter-encoded pictures
    6.
    发明授权
    Trick play signal generation for a digital video recorder using retrieved intra-encoded pictures and generated inter-encoded pictures 失效
    使用检索到的帧内编码图像和生成的帧间编码图像的数字视频记录器的特技播放信号生成

    公开(公告)号:US06621979B1

    公开(公告)日:2003-09-16

    申请号:US09329394

    申请日:1999-06-10

    IPC分类号: H04N591

    摘要: A trick play information stream is generated from a normal play information stream, so that they can be recorded together as a composite information stream on the record carrier, such that upon reproduction in a trick play reproduction mode, an information signal of sufficient quality, e.g., as regards visibility, can be obtained. GOPs are generated, each GOP including an I-frame retrieved from the original normal play information stream, and one or more so-called ‘empty P frames’. Another aspect is the requirement of generating GOPs for the trick play information stream that have a constant bitcost per GOP. Again, another aspect lies in the retrieval of the I-frame for the trick play information stream from the normal play information. More specifically, an I-frame is generated by retrieving, from an I-frame included in the normal play information, the DC coefficient of the I-frame and a number of AC coefficients from that I frame, and generating the I-frame for the trick play information stream therefrom. More specifically, the number of AC coefficients for an I-frame of the trick play information signal depends on the difference between the DC coefficients of two subsequent I-frames in the normal play information from which the I-frame to be generated and the just previously generated I-frame for the trick play information signal have been derived.

    摘要翻译: 从正常播放信息流生成特技播放信息流,使得它们可以作为复合信息流一起记录在记录载体上,使得在特技播放再现模式下再现时,具有足够质量的信息信号,例如 关于可视性,可以获得。 生成GOP,每个GOP包括从原始正常播放信息流检索的I帧,以及一个或多个所谓的“空P帧”。另一方面是产生具有 同样,另一方面在于从正常播放信息中检索特技播放信息流的I帧,更具体地说,通过从包含在该帧中的I帧中检索出I帧, 正常播放信息,I帧的DC系数和来自该I帧的AC系数的数量,并且从其产生用于特技播放信息流的I帧,更具体地说,I帧的AC系数的数量 特技播放信息信号取决于要生成的I帧的正常播放信息中的两个后续I帧的DC系数与用于特技pl的刚刚生成的I帧的两个DC系数之间的差异 已经导出了一个信息信号。

    Manipulating sub-pictures of a compressed video signal
    7.
    发明授权
    Manipulating sub-pictures of a compressed video signal 有权
    操纵压缩视频信号的子画面

    公开(公告)号:US09462295B2

    公开(公告)日:2016-10-04

    申请号:US10531902

    申请日:2003-09-19

    摘要: The invention relates to manipulation of sub-pictures (303) in a picture such as a mosaic screen (301). An apparatus comprises a sub-picture generator (105) connected to a mosaic screen generator (107), which generates the mosaic screen (301) from the sub-pictures. The mosaic screen (301) is by a video compressor (111) divided into uncompressed picture blocks such that each block only comprise video data from one sub-picture. The picture blocks are compressed using a block compression scheme such as MPEG-2. The apparatus further comprises a video manipulation processor (113), which manipulates the sub-pictures by manipulating the association between control data in the video signal and the compressed picture blocks. The video data of the compressed picture blocks are not affected whereby de-compression and new compression is avoided.

    摘要翻译: 本发明涉及在诸如马赛克屏幕(301)的图片中操纵子画面(303)。 一种装置包括连接到马赛克画面生成器(107)的子图像生成器(105),其从子画面生成马赛克画面(301)。 马赛克画面(301)由划分为未压缩图像块的视频压缩器(111),使得每个块仅包括来自一个子画面的视频数据。 使用诸如MPEG-2的块压缩方案来压缩图像块。 该装置还包括视频操纵处理器(113),其通过操纵视频信号中的控制数据与压缩图像块之间的关联来操纵子画面。 压缩图像块的视频数据不受影响,从而避免了解压缩和新的压缩。

    Apparatus for recording and reproducing an information signal comprising
packets that may occur irregularly as a function of time in a serial
datastream of the information signal, and a record carrier carrying the
information signal
    10.
    发明授权
    Apparatus for recording and reproducing an information signal comprising packets that may occur irregularly as a function of time in a serial datastream of the information signal, and a record carrier carrying the information signal 失效
    用于记录和再现信息信号的装置,该信息信号包括在信息信号的串行数据流中随时间不规则地出现的分组,以及承载信息信号的记录载体

    公开(公告)号:US5953483A

    公开(公告)日:1999-09-14

    申请号:US622508

    申请日:1996-03-25

    摘要: A recording apparatus, for recording an information signal in at least one track on a record carrier. The information signal comprises packets (P.sub.i) that may occur irregularly as a function of time in the serial datastream of the information signal. The apparatus comprises an input terminal for receiving the information signal, a channel encoding unit for channel encoding the information signal into a channel encoded information signal and a writing unit for writing the channel encoded information signal in said at least one track on the record carrier. The channel encoded information signal comprises frames of information. A frame of information may be recorded in a group of n subsequent tracks (Tr0 to Tr11), when the recording apparatus is a recording apparatus of the helical scan type, where n is an integer larger than 1. The apparatus further comprises a time stamp generator unit for generating time stamps (TS.sub.i) having a relation to the moment of occurrence of a packet comprised in the information signal received. Further, a combining unit is present for combining a packet and its corresponding time stamp so as to obtain a composite packet (P.sub.i '). The time stamp generator unit comprises a counter for generating subsequent cycles of subsequent count values, said cycles coinciding in time with the recording of subsequent frames in said at least one track on the record carrier. In response to the detection of the occurrence of a packet in said information signal, a time stamp for said packet is generated, which time stamp has a specified relationship to the count value of said counter means at said moment of occurrence of said packet.

    摘要翻译: 一种记录装置,用于在记录载体上的至少一个轨道中记录信息信号。 信息信号包括可以在信息信号的串行数据流中作为时间的函数不规则地发生的分组(Pi)。 该装置包括用于接收信息信号的输入端,用于将信息信号编码为信道编码信息信号的信道编码单元和用于将信道编码信息信号写入记录载体上的所述至少一个磁道的写入单元。 信道编码信息信号包括信息帧。 当记录装置是螺旋扫描类型的记录装置,其中n是大于1的整数时,可将一帧信息记录在一组n个后续轨道(Tr0至Tr11)中。该装置还包括时间戳 发生器单元,用于产生与所接收的信息信号中包含的分组的发生时刻有关的时间戳(TSi)。 此外,存在组合单元以组合分组和其对应的时间戳,以便获得复合分组(Pi')。 时间戳发生器单元包括用于产生后续计数值的后续周期的计数器,所述周期与记录载体上的所述至少一个轨道中的后续帧的记录时间一致。 响应于在所述信息信号中检测到分组的发生,产生所述分组的时间戳,该时间戳在所述分组的出现时刻与所述计数器装置的计数值具有特定的关系。