利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

209 条记录 (耗时 0.022 秒)

    System comprising a first encoder for coding a first digital signal, a second encoder for coding a second digital signal and at least one decoder for decoding coded digital signals, and coder and decoder for use in the system
    52.
    发明授权
    System comprising a first encoder for coding a first digital signal, a second encoder for coding a second digital signal and at least one decoder for decoding coded digital signals, and coder and decoder for use in the system 失效
    系统包括用于对第一数字信号进行编码的第一编码器，用于对第二数字信号进行编码的第二编码器和用于解码编码数字信号的至少一个解码器，以及用于该系统的编码器和解码器

    公开(公告)号：US5596321A

    公开(公告)日：1997-01-21

    申请号：US119736

    申请日：1993-09-10

    申请人： Andries P. Hekstra ,  Arian Koster

    发明人： Andries P. Hekstra ,  Arian Koster

    IPC分类号： H03M7/36 ,  G06T9/00 ,  H04N1/41 ,  H04N7/26 ,  H04N7/50 ,  H04N7/54 ,  H04N13/00 ,  H04N11/02

    CPC分类号： H04N7/54 ,  H04N19/597 ,  H04N19/61 ,  H04N2013/0081 ,  H04N2013/0085

    摘要： Known systems based on stereoscopic video coding and video decoding code with inadequate efficiency because the left-hand picture and the right-hand picture are coded and decoded independently of one another by means of the encoders present in the system. As a result of providing one encoder with switching means to which a signal representing the left-hand picture and a signal representing the right-hand picture are fed, said encoder is able to base the prediction either on the left-hand picture or the right-hand picture, and this improves the prediction and, consequently, the efficiency of the coding. As a result of designing the switching means, according to one embodiment, for the adjustment of the ratio of the signal representing the left-hand picture and the signal representing the right-hand picture and for the subsequent addition of the two adjusted signals, a still greater advantage is achieved in the prediction with the correct ratio, and this results in a further improvement in the efficiency of the (total) coding.

    摘要翻译： 已知的基于立体视频编码的系统和视频解码代码的效率不足，因为通过存在于系统中的编码器，左手图片和右手图片被彼此独立地编码和解码。 作为向一个编码器提供表示左手图像的信号和表示右侧图像的信号的切换装置的结果，所述编码器能够将预测基于左侧图像或右侧图像 手画，这改善了编码的预测，从而提高了编码的效率。 作为设计开关装置的结果，根据一个实施例，为了调整表示左侧图像的信号和表示右侧图像的信号的比率以及随后的两个调整信号的相加，a 在正确比例的预测中获得更大的优势，这导致（总）编码的效率进一步提高。

    Device for transmitting or storing digital television pictures, and device for receiving said pictures
    53.
    发明授权
    Device for transmitting or storing digital television pictures, and device for receiving said pictures 失效
    用于发送或存储数字电视图像的装置，以及用于接收所述图像的装置

    公开(公告)号：US5570132A

    公开(公告)日：1996-10-29

    申请号：US254092

    申请日：1994-06-06

    申请人： Peter H. N. De With ,  Wilhelmus J. Van Gestel

    发明人： Peter H. N. De With ,  Wilhelmus J. Van Gestel

    IPC分类号： H03M7/40 ,  H04N5/783 ,  H04N5/92 ,  H04N7/54 ,  H04N9/804 ,  H04N19/89 ,  H04N7/52

    CPC分类号： H04N7/54 ,  H04N19/89 ,  H04N9/8047 ,  H04N5/783

    摘要： Device for transmitting or storing digital television pictures in which a maximum possible number of data of a group of transformed pixel blocks (DB.sub.1 . . . DB.sub.12) is transmitted in the form of variable-length code words (V.sub.1 . . . V.sub.N) in a corresponding channel block of predetermined length (FIG. 5A). If all code words of the groups of blocks are accommodated in the corresponding channel block (FIG. 5C), the channel block will also comprise surplus data of other blocks. The boundary, within a channel block, between these code words and surplus data is transmitted in the form of an address (P) which is accommodated at a predetermined position of the channel block. If the channel block length is inadequate for transmitting all code words of the group of blocks, the channel block (FIG. 5B), will comprise at least the code words which are representative of the DC coefficient and a number of important AC coefficients of each block. Said code words are accommodated in successive channel block sections (L.sub.1 . . . L.sub.12), with a code (C) for the length of these channel block sections being transmitted at predetermined positions of the channel block.

    摘要翻译： 用于发送或存储数字电视图像的装置，其中以可变长度码字（V1 ... VN）的形式发送一组经转换的像素块（DB1 ... DB12）的最大可能数量的数据， 相应的预定长度的通道块（图5A）。 如果块组中的所有码字被容纳在对应的信道块（图5C）中，则信道块还将包括其他块的剩余数据。 信道块内的这些码字与剩余数据之间的边界以容纳在信道块的预定位置的地址（P）的形式发送。 如果信道块长度不足以发送块组的所有码字，则信道块（图5B）将至少包括表示DC系数的码字和每个的重要AC系数的数量 块。 所述码字被容纳在连续的信道块部分（L1 ... L12）中，其中这些信道块部分的长度的码（C）在信道块的预定位置发送。

    Variable-length decoder for bit-stuffed data
    54.
    发明授权
    Variable-length decoder for bit-stuffed data 失效
    用于位填充数据的可变长度解码器

    公开(公告)号：US5566192A

    公开(公告)日：1996-10-15

    申请号：US454738

    申请日：1995-05-31

    申请人： Heon-hee Moon

    发明人： Heon-hee Moon

    IPC分类号： H03M7/40 ,  G06T9/00 ,  H03M7/42 ,  H04J3/06 ,  H04L7/08 ,  H04N7/24 ,  H04N7/54 ,  H04N7/62 ,  G06F11/00

    CPC分类号： H04N21/434 ,  H03M7/425 ,  H04N19/152 ,  H04N7/54 ,  H04N19/50 ,  H04N21/23611

    摘要： A variable-length decoder variable-length-decodes a received variable-length-encoded data. The variable-length-encoded data is bit-stuffed in each data block to create data portions with a predetermined number of bits. Frame start codes representing a start of each frame and mass of macroblock start codes distinguishing between a plurality of masses of macroblocks are inserted into the data. Synchronization of data between frames and masses of macroblocks are accomplished via: a first-in-first-out (FIFO) memory which stores encoded data; a decoder which variable-length-decodes the input data in response to a control signal and generates an end-of-block (EOB) error signal when an EOB is not found; a decoding interface which interfaces between the decoder and a timing controller; and a timing controller which synchronizes decoding by use of start and initialization signals.

    摘要翻译： 可变长度解码器可变长度解码接收到的可变长度编码数据。 可变长度编码的数据在每个数据块中被填充以创建具有预定位数的数据部分。 表示每帧开始的帧起始码和区分多个宏块块的宏块开始码的质量被插入到数据中。 通过以下方式来实现帧与宏块质量之间的数据同步：存储编码数据的先进先出（FIFO）存储器; 解码器，其响应于控制信号对输入数据进行可变长度解码，并且当未找到EOB时产生块结束（EOB）错误信号; 解码接口，其在解码器和定时控制器之间进行接口; 以及通过使用起始和初始化信号来同步解码的定时控制器。

    Method of and apparatus for compressing image representing signals
    58.
    发明授权
    Method of and apparatus for compressing image representing signals 失效
    用于压缩表示信号的图像的方法和装置

    公开(公告)号：US5542008A

    公开(公告)日：1996-07-30

    申请号：US187459

    申请日：1994-01-28

    申请人： Takayuki Sugahara ,  Ichiro Ando

    发明人： Takayuki Sugahara ,  Ichiro Ando

    IPC分类号： H04N1/41 ,  H04N7/173 ,  H04N7/26 ,  H04N7/30 ,  H04N7/32 ,  H04N7/50 ,  H04N7/54 ,  G06K9/36 ,  G06K9/46

    CPC分类号： H04N7/17345 ,  H04N19/117 ,  H04N19/124 ,  H04N19/126 ,  H04N19/137 ,  H04N19/14 ,  H04N19/149 ,  H04N19/172 ,  H04N19/423 ,  H04N19/50 ,  H04N19/60 ,  H04N19/61 ,  H04N19/80 ,  H04N19/82 ,  H04N19/86 ,  H04N19/90 ,  H04N7/17336 ,  H04N7/54 ,  H04N19/146 ,  H04N19/152

    摘要： An image representing input signal is processed so the data therein are filtered in a predetermined manner to derive a filtered signal. The values of the filtered signal are combined at successive time intervals, and the values are combined so there is an addition of a function of values of the filtered signal at the successive time intervals to derive a combined signal. The combined signal is converted into a signal representing a predicted number of bits in a frame of the image. In response to the signal representing a predicted number of bits in a frame of the image, a signal representing the magnitude of a control for quantization step size is derived which is as a function of an error between the predicted number of bits and a predetermined target value therefor. A function of the input signal data is orthogonally transformed so a transformed signal is derived. Output data represented by the transformed signal are quantized so they have quantized step size determined by the control signal representing the magnitude of a quantization step size and there is a reduction in the number of data bits for the image relative to the number of data bits in the input signal.

    摘要翻译： 处理表示输入信号的图像，使其中的数据以预定的方式被滤波以得到滤波信号。 滤波信号的值以连续的时间间隔组合，并且将这些值组合，以便在连续的时间间隔附加滤波信号的值的函数以导出组合信号。 组合信号被转换成表示图像帧中的预测位数的信号。 响应于表示图像的帧中的预测位数的信号，导出表示量化步长控制量值的信号，其作为预测位数与预定目标之间的误差的函数 价值。 输入信号数据的功能被正交变换，从而导出变换信号。 由经变换的信号表示的输出数据被量化，使得它们具有由表示量化步长大小的控制信号确定的量化步长，并且相对于数据位的数量，图像的数据位数减少 输入信号。

    Picture signal coding/decoding method and device using thereof
    59.
    发明授权
    Picture signal coding/decoding method and device using thereof 失效
    图像信号编码/解码方法及其装置

    公开(公告)号：US5541659A

    公开(公告)日：1996-07-30

    申请号：US232995

    申请日：1994-04-25

    申请人： Yuichi Kojima

    发明人： Yuichi Kojima

    IPC分类号： H04N19/60 ,  H04N7/54 ,  H04N19/119 ,  H04N19/12 ,  H04N19/126 ,  H04N19/136 ,  H04N19/152 ,  H04N19/189 ,  H04N19/423 ,  H04N19/46 ,  H04N19/635 ,  H04N19/70 ,  H04N19/85 ,  H04N19/91 ,  H04N19/93 ,  H04N7/137

    CPC分类号： H04N7/54 ,  H04N19/63 ,  H04N19/645 ,  H04N19/102 ,  H04N19/30

    摘要： In a picture signal coding/decoding method and a picture signal coding/decoding device, the compressibility and visual picture quality of the picture pattern whose inter field correlation of high frequency decreases and inter field correlation of low frequency remains when slow movement occurs are improved and transmitted. The intra field component separate coding is performed in each field on the first and second fields of picture signal respectively, and by preventing the effect of inter field movement in advance, the dropping of compressibility by the movement is avoided and furthermore, new blocks is constructed by the resultant low frequency components of two fields and since it is so arranged that the component separate coding is performed in the frame, low frequency components which are not easily affected by slow movement can be coded efficiently, and as a result, the compressibility for the picture containing slow movement can be increased.

    摘要翻译： 在图像信号编码/解码方法和图像信号编码/解码装置中，提高了当慢速移动发生时，高频的场间相关性和低频的场间相关性保持的图像的压缩率和视觉图像质量， 传输。 分别在图像信号的第一和第二场的每个场中执行场内分量分离编码，并且通过预先防止帧间移动的影响，避免了通过移动的可压缩性的降低，而且构造新的块 由于两个场的合成低频分量，由于它被配置为在帧中执行分量分离编码，因此可以有效地编码不易受慢动作影响的低频分量，结果是对于 可以增加包含慢动作的图片。

    Methods and devices for encoding and decoding frame signals and recording medium therefor
    60.
    发明授权
    Methods and devices for encoding and decoding frame signals and recording medium therefor 失效
    用于编码和解码帧信号的方法和装置及其记录介质

    公开(公告)号：US5510840A

    公开(公告)日：1996-04-23

    申请号：US441397

    申请日：1995-05-15

    申请人： Jun Yonemitsu ,  Yoichi Yagasaki

    发明人： Jun Yonemitsu ,  Yoichi Yagasaki

    IPC分类号： G06T9/00 ,  H04N7/26 ,  H04N7/46 ,  H04N7/50 ,  H04N7/54 ,  H04N9/804 ,  H04N21/236 ,  H04N21/434 ,  H04N7/24

    CPC分类号： H04N9/8047 ,  H04N19/00 ,  H04N19/105 ,  H04N19/112 ,  H04N19/137 ,  H04N19/577 ,  H04N19/61 ,  H04N21/236 ,  H04N21/434 ,  H04N7/54 ,  H04N19/70

    摘要： A motion vector detection circuit detects the motion vector for each macro-block between an odd field and an even field. An encoding system decision circuit decides the type of the encoding system, that is if the encoding system is a field-based encoding system or a frame-based encoding system, based on a median of a motion vector. A control circuit controls gates and changeover switches, in accordance with the encoding system type as decided by the decision system, for generating a field-based reference picture or a frame-based reference picture from buffer memories. The circuitry from an additive node to a VLC circuit finds difference data between the reference picture and the picture to be encoded, while transforming the difference data by discrete cosine transform and variable length encoding the transformed data. The VLC circuit sets the encoding system type as a flag in a header of a predetermined hierarchical layer of a bit stream. By the above operation, any interlaced picture may be encoded efficiently, whether the picture includes little motion or abundant motion or includes both little motion and abundant motion in combination. A picture data decoding device detects the flag and executes decoding by changing over field-based decoding to frame-based decoding or vice versa depending on the flag for reproducing the picture data.

    摘要翻译： 运动矢量检测电路检测奇数场和偶场之间的每个宏块的运动矢量。 编码系统判定电路基于运动矢量的中值决定编码系统的种类，即编码系统是基于场的编码系统或基于帧的编码系统。 控制电路根据由判定系统决定的编码系统类型来控制门和切换开关，用于从缓冲存储器生成基于场的参考图像或基于帧的参考图像。 从附加节点到VLC电路的电路在参考图像和要编码的图像之间找到差分数据，同时通过离散余弦变换和变换数据的可变长度编码对差分数据进行变换。 VLC电路将编码系统类型设置为比特流的预定分层的报头中的标志。 通过上述操作，可以有效地编码任何隔行扫描图像，无论该图像包括少量运动还是丰富的运动，或者包括组合的少量运动和丰富的运动。 图像数据解码装置根据用于再现图像数据的标志，检测标志并执行基于字段的解码到基于帧的解码或反之亦然的解码。