Information signal recording/reproducing apparatus with time base
correction facility
    1.
    发明授权
    Information signal recording/reproducing apparatus with time base correction facility 失效
    具有时基校正功能的信息记录/重放装置

    公开(公告)号:US5231507A

    公开(公告)日:1993-07-27

    申请号:US831084

    申请日:1992-02-05

    IPC分类号: H04N9/87 H04N9/896

    CPC分类号: H04N9/896 H04N9/87

    摘要: An information signal recording/reproducing apparatus includes a recording apparatus and a reproducing apparatus. The recording apparatus is arranged to record on a recording medium an information signal after angle-modulating the signal in such a way as to cause a signal corresponding to a timewise portion of the angle-modulated information signal to be in a given relation to a reference signal. The reproducing apparatus is arranged to angle-demodulate the angle-modulated information signal when it is reproduced from the recording medium, and to perform time base correction on the basis of the signal part of the angle-modulated information signal. Time base variations occurring during the reproduction can be accurately carried out by the arrangement without having any special signal added to the information signal during recording.

    摘要翻译: 信息信号记录/再现装置包括记录装置和再现装置。 记录装置被配置为在对信号进行角度调制之后,在信号信号上记录信息信号,以使与角度调制信息信号的时间部分对应的信号与给定的关系成一定关系 信号。 再现装置被配置为当角度调制信息信号从记录介质再现时对其进行角度解调,并且基于角度调制信息信号的信号部分进行时基校正。 在再现期间发生的时基变化可以通过该布置精确地执行,而在记录期间不会对信息信号添加任何特殊信号。

    Encoding apparatus
    4.
    发明授权
    Encoding apparatus 失效
    数字数据编码装置

    公开(公告)号:US5043809A

    公开(公告)日:1991-08-27

    申请号:US520957

    申请日:1990-05-09

    IPC分类号: H04N7/26 H04N7/30 H04N7/32

    CPC分类号: H04N19/00 H04N19/50 H04N19/60

    摘要: The present invention relates to an encoding apparatus for digitizing and encoding an input image signal, the input image signal being sequentially sampled to sequentially form sample signals at respective sample points. The encoding data which respectively correspond to the sample signals at respective sample points are formed, and the plurality of resultant encoding data are sequentially output on a group unit basis of k (k being an integer equal to or greater than 2) encoding data in accordance with the order different from the forming order of the encoding data. In accordance with a combination of the k encoding data which have been output, the k encoding data are converted into the data train having less DC and low frequency components and output, so that the image signal can be highly efficiently encoded.

    摘要翻译: 本发明涉及一种用于对输入图像信号进行数字化和编码的编码装置,所述输入图像信号被顺序采样以在相应采样点顺序地形成采样信号。 形成分别对应于各取样点的采样信号的编码数据,并且按照根据编码数据的k(k为2以上的整数)的组为单位依次输出多个合成编码数据 其顺序与编码数据的形成顺序不同。 根据已经输出的k个编码数据的组合,将k个编码数据转换成具有较少的DC和低频分量的数据串,并输出,从而可高效地编码图像信号。

    Image information transmitting system
    5.
    发明授权
    Image information transmitting system 失效
    图像信息传输系统

    公开(公告)号:US4755878A

    公开(公告)日:1988-07-05

    申请号:US932773

    申请日:1986-11-19

    CPC分类号: H04N7/12

    摘要: A system for transmitting an image information signal which continuously forms a temporally correlated group of image planes is arranged to divide each image plane portion of the image information signal into a plurality of blocks; to have a plurality of different information transmitting modes of transmitting the image information signal in different degrees of information density including a mode in which a present image plane portion of the image information signal is not transmitted; to form a transmitting information signal on the basis of applicable one of the plurality of the different information transmitting modes; to generate for each of the blocks a transmitting mode signal including information indicating use or nonuse of the information transmitting mode in which the present image plane portion of the image information signal is not transmitted; and to transmit the transmitting information signal and the transmitting mode signal in a multiplexing manner.

    摘要翻译: 用于发送连续地形成时间相关的图像平面组的图像信息信号的系统被布置为将图像信息信号的每个图像平面部分分成多个块; 具有以不同信息密度传输图像信息信号的多个不同信息发送模式,包括不发送图像信息信号的当前图像平面部分的模式; 基于所述多个所述不同信息发送模式中的适用的一个,形成发送信息信号; 为每个块生成包括指示不发送图像信息信号的当前图像平面部分的信息发送模式的使用或不使用的信息的发送模式信号; 并以复用方式发送发送信息信号和发送模式信号。

    Image information signal transmitting system
    6.
    发明授权
    Image information signal transmitting system 失效
    图像信息传输系统

    公开(公告)号:US5023716A

    公开(公告)日:1991-06-11

    申请号:US608634

    申请日:1990-10-31

    IPC分类号: H04N7/12 H04N7/26 H04N7/46

    CPC分类号: H04N7/125 H04N19/59 H04N19/98

    摘要: An image information signal transmitting system of this invention is a system which divides an image information signal for one picture constituted by a set of picture element data into blocks each constituted by a predetermined quantity of picture element data, transmits the picture element data on each of the blocks on the basis of a mode selected from among a plurality of transmission modes each of which allows a different quantity of picture element data to be transmitted and a mode information signal indicative of the transmission mode of each of the blocks, and restores the picture element data on each of the blocks to the original image information signal. The system is arranged to store the transmitted picture element data, read out the stored picture element data at a data readout rate of one kind which is selected from among a plurality of different data readout rates and which corresponds to the kind of transmission mode indicated by the transmitted mode information signal, and implement a data restoring processing on the picture element data thus read on the basis of a data restoring processing of one kind which is selected from among a plurality of different data restoring processings and which corresponds to the kind of transmission mode indicated by the transmitted mode information signal. With this arrangement, it is possible to realize reductions in the size, weight and cost of the apparatus without deteriorating an image information signal to be transmitted.

    摘要翻译: 本发明的图像信息信号发送系统是将由一组图像元素数据构成的一幅图像的图像信息信号分割为由预定量的图像元素数据构成的块的系统, 基于从多个传输模式中选择的模式,每个传输模式允许发送不同数量的图像元素数据,以及表示每个块的传输模式的模式信息信号,并恢复图像 每个块上的元素数据到原始图像信息信号。 该系统设置为存储所发送的图像元素数据,以从多个不同数据读出速率中选择的一种数据读出速率读出存储的图像元素数据,并且其对应于由 发送模式信息信号,并且基于从多个不同的数据恢复处理中选择并且对应于传输的种类的一种的数据恢复处理,对这样读取的图像元素数据执行数据恢复处理 模式由发送模式信息信号指示。 利用这种布置,可以实现装置的尺寸,重量和成本的降低,而不会使要发送的图像信息信号恶化。

    Information signal transmission system
    7.
    发明授权
    Information signal transmission system 失效
    信息传输系统

    公开(公告)号:US4932066A

    公开(公告)日:1990-06-05

    申请号:US277421

    申请日:1988-11-23

    IPC分类号: H04N1/411

    CPC分类号: H04N1/411

    摘要: A system for transmitting information signal in which a temporally correlated group of image planes are continuously formed comprises: dividing means which divides the information signal into separate image planes and further divides each image plane portion of the signal into a plurality of blocks; first transmitting means for transmitting in a first degree of information density the first of the plurality of blocks obtained from the dividing means; second transmitting means for transmitting in a second degree of information density the second of the plurality of divided blocks obtained from the dividing means; and transmission inhibiting means for inhibiting transmission of the third of the plurality of divided blocks obtained from the dividing means by dividing a present image plane portion of the information signal.

    摘要翻译: 用于发送时间上相关的图像平面组连续形成的信息信号的系统包括:分割装置,将信息信号分成分离的图像平面,并将信号的每个图像平面部分分成多个块; 第一发送装置,用于以第一信息密度从分割装置获得的多个块中的第一块发送; 第二发送装置,用于以第二信息密度发送从分割装置获得的多个分割块中的第二个; 以及发送禁止装置,用于通过划分信息信号的当前图像平面部分来禁止从分割装置获得的多个划分块中的第三块的传输。

    Encoding image information transmission apparatus
    10.
    发明授权
    Encoding image information transmission apparatus 失效
    编码图像信息传输装置

    公开(公告)号:US5070402A

    公开(公告)日:1991-12-03

    申请号:US683499

    申请日:1991-04-10

    IPC分类号: H04N7/26

    CPC分类号: H04N19/98

    摘要: An image information transmission apparatus of this invention encodes and transmits image information. An image information signal of one frame consisting of a plurality of pixel data is divided into a plurality of blocks each consisting of a predetermined number of pixel data. At least two reference value data associated with a dynamic range of levels of the pixel data constituting each of the divided blocks, and distribution state data associated with a distribution state thereof are formed. Each pixel data constituting the block is encoded on the basis of the formed reference value data and the formed distribution state data to obtain encoded data. A transmission data series is formed and transmitted using the formed reference value data, the formed distribution state data, and the encoded data as transmission units. Therefore, the image information signal can be highly effectively transmitted with minimum image quality degradation caused by encoding.

    摘要翻译: 本发明的图像信息发送装置对图像信息进行编码和发送。 由多个像素数据构成的一帧的图像信息信号被分成多个块,每个块由预定数量的像素数据组成。 形成与构成每个分割块的像素数据的动态动态范围相关联的至少两个参考值数据,以及与其分布状态相关联的分配状态数据。 基于所形成的基准值数据和形成的分布状态数据对构成块的每个像素数据进行编码以获得编码数据。 使用形成的基准值数据,形成的分配状态数据和编码数据作为发送单位来形成和发送发送数据序列。 因此,可以以由编码导致的最小图像质量劣化来高效地传输图像信息信号。