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1. 发明授权

US4774562A Image transmission system with preview mode 失效
标题翻译：具有预览模式的图像传输系统
公开(公告)号：US4774562A
公开(公告)日：1988-09-27
申请号：US57410
申请日：1987-06-02
申请人： Cheng-Tie Chen , Majid Rabbani , Scott J. Daly
发明人： Cheng-Tie Chen , Majid Rabbani , Scott J. Daly
IPC分类号： G06F17/14 , H04N1/41 , H04N7/30 , H04N11/04 , H04N7/137
CPC分类号： G06F17/145 , H04N11/044 , H04N19/30 , H04N19/60
摘要： A still image communication system performs a block cosine transformation on an image of bandwidth compression. A transmitter subsamples a full resolution image, to provide a preview image, and transforms and transmits the preview image prior to transforming and transmitting the full resolution image. A receiver and displays the preview image, and replaces the preview image on the display block-by-block as the full resolution is received.
摘要翻译：静止图像通信系统对带宽压缩的图像执行块余弦变换。发射机对全分辨率图像进行子采样，以提供预览图像，并且在变换和发送全分辨率图像之前变换和发送预览图像。接收器并显示预览图像，并在接收到完整分辨率时逐块替换显示屏上的预览图像。

2. 发明授权

US4774574A Adaptive block transform image coding method and apparatus 失效
标题翻译：自适应块变换图像编码方法和装置
公开(公告)号：US4774574A
公开(公告)日：1988-09-27
申请号：US057404
申请日：1987-06-02
申请人： Scott J. Daly , Cheng-Tie Chen , Majid Rabbani
发明人： Scott J. Daly , Cheng-Tie Chen , Majid Rabbani
IPC分类号： H04N1/41 , H04N7/26 , H04N7/30 , H04N7/133
CPC分类号： H04N19/126 , H04N19/60 , H04N19/124
摘要： In a method and apparatus for transmitting a digital image over a limited bandwidth communication channel, an image is block transformed to produce blocks of transform coefficients; the transform coefficients are quantized in accordance with a model of the visibility of quantization error in the presence of image detail; the quantized coefficients are encoded with a minimum redundancy code; and the coded, quantized transform coefficients are transmitted.
摘要翻译：在用于通过有限带宽通信信道发送数字图像的方法和装置中，图像被块变换以产生变换系数块; 在存在图像细节的情况下，根据量化误差的可见度的模型对变换系数进行量化; 量化系数用最小冗余码编码; 并且发送编码的量化变换系数。

3. 发明授权

US4780761A Digital image compression and transmission system visually weighted transform coefficients 失效
标题翻译：数字图像压缩和传输系统视觉加权变换系数
公开(公告)号：US4780761A
公开(公告)日：1988-10-25
申请号：US57413
申请日：1987-06-02
申请人： Scott J. Daly , Majid Rabbani , Cheng-Tie Chen
发明人： Scott J. Daly , Majid Rabbani , Cheng-Tie Chen
IPC分类号： H04N7/26 , H04N7/30 , H04N7/133
CPC分类号： H04N19/60
摘要： A system for compressing and transmitting a digital image signal over a limited bandwidth communication channel, transform codes the image values and quantizes the transform coefficients according to a two-dimensional model of the sensitivity of the human visual system. The model of the human visual system is characterized by being less sensitive to diagonally oriented spatial frequencies than to horizontally or vertically oriented spatial frequencies, thereby achieving increased compression of the image.
摘要翻译：一种用于在有限带宽通信信道上压缩和发送数字图像信号的系统，根据人类视觉系统的灵敏度的二维模型对图像值进行变换编码并量化变换系数。人类视觉系统的模型的特征在于对角度定向的空间频率比对水平或垂直取向的空间频率更不敏感，从而实现图像的增加的压缩。

4. 发明授权

US07613615B1 Circuits, systems, and methods for real-time de-shuffling of shuffled audio data 有权
标题翻译：用于混洗音频数据的实时去混洗的电路，系统和方法
公开(公告)号：US07613615B1
公开(公告)日：2009-11-03
申请号：US10871287
申请日：2004-06-17
申请人： Akhtar Mahmood , Cheng-Tie Chen , Ting-Chung Chen
发明人： Akhtar Mahmood , Cheng-Tie Chen , Ting-Chung Chen
IPC分类号： G10L21/00
CPC分类号： G11B20/1866 , G11B20/10527 , G11B20/1262 , G11B2020/00036 , G11B2020/00057 , G11B2020/10759
摘要： A data de-shuffler includes a buffer having a set of addressable locations for storing data and control circuitry for de-shuffling a sequence of shuffled data samples. The control circuitry stores a first data sample of the sequence of shuffled data samples at a first location in the buffer with a first address generated from an entry in a look up table and stores a second data sample at a second location in the buffer with a second address generated by incrementing from the first address by a selected incrementation value. The first and second locations in the buffer place the first and second samples in corresponding positions in an un-shuffled sequence of samples.
摘要翻译：数据去洗牌器包括具有用于存储数据的一组可寻址位置的缓冲器和用于对洗牌数据样本序列进行混洗的控制电路。控制电路将洗牌数据样本序列的第一数据样本存储在缓冲器中的第一位置，具有从查询表中的条目生成的第一地址，并将第二数据样本存储在缓冲器中的第二位置，通过从第一地址递增所选择的递增值而生成的第二地址。缓冲器中的第一和第二位置将第一和第二样本置于未混洗的样本序列中的相应位置。

5. 发明授权

US5241383A Pseudo-constant bit rate video coding with quantization parameter adjustment 失效
标题翻译：具有量化参数调整的伪常数比特率视频编码
公开(公告)号：US5241383A
公开(公告)日：1993-08-31
申请号：US882487
申请日：1992-05-13
申请人： Cheng-Tie Chen , Andria H. Wong
发明人： Cheng-Tie Chen , Andria H. Wong
IPC分类号： G06T9/00 , H04N7/26 , H04N7/30 , H04N7/46 , H04N7/50
CPC分类号： H04N19/577 , H04N19/107 , H04N19/126 , H04N19/139 , H04N19/149 , H04N19/152 , H04N19/172 , H04N19/177 , H04N19/60 , H04N19/61 , H04N19/124 , H04N19/146
摘要： A method for coding frames of video wherein a coding circuit (14,16,18) includes a processor (30) for performing an orthogonal transform such as a discretecosine transform and a quantizer (32) for quantizing the resulting transform coefficients. The coding circuit codes the video frames using intra-frame, predictive or interpolative coding to generate code bits at a variable rate. The code bits are stored at a variable rate in a rate buffer (22), which transmits the code bits into a communication channel (24) at a pseudo-constant rate, i.e. a rate which is constant in every time interval of one frame. To maintain the contents of the rate buffer (22) within predetermined limits, the quantization parameters utilized by the quantizer (32) are periodically adjusted to increase or decrease the amount of code bits generated by the coding circuit. The quantization parameters are changed on a global SGOP level to avoid changes of quantization parameters and corresponding changes in decoded image quality within particular frames. The change in quantization parameters for coding the next SGOP is determined by a deviation measure between the actual number of code bits generated by the coding circuit (14,16,18) for the previous SGOP and an estimate of the number of code bits for the previous SGOP. The estimated number of code bits is determined based on the contents of the rate buffer (22) such that the rate buffer (22) will be emptied in a predetermined time period.
摘要翻译：一种用于编码视频帧的方法，其中编码电路（14,16,18）包括用于执行诸如离散余弦变换的正交变换的处理器（30）和用于量化所得变换系数的量化器（32）。编码电路使用帧内，预测或内插编码对视频帧进行编码，以生成可变速率的码位。代码位以可变速率存储在速率缓冲器（22）中，速率缓冲器（22）以伪恒定速率（即，在一帧的每个时间间隔中是恒定的速率）将码位发送到通信信道（24）中。为了将速率缓冲器（22）的内容保持在预定限度内，量化器（32）使用的量化参数被周期性地调整，以增加或减少编码电路产生的码位数量。量化参数在全局SGOP电平上改变，以避免量化参数的改变和特定帧内解码图像质量的相应变化。用于对下一个SGOP进行编码的量化参数的变化由通过上一个SGOP的编码电路（14,16,18）生成的码本的实际数目与对于前一个SGOP的码位数的估计之间的偏差测量来确定以前的SGOP。基于速率缓冲器（22）的内容来确定估计的码位数，使得速率缓冲器（22）将在预定时间段内被清空。

6. 发明授权

US06192075B1 Single-pass variable bit-rate control for digital video coding 失效
标题翻译：用于数字视频编码的单通可变比特率控制
公开(公告)号：US06192075B1
公开(公告)日：2001-02-20
申请号：US08918682
申请日：1997-08-21
申请人： Fure-Ching Jeng , Cheng-Tie Chen , Chia-Chun Huang
发明人： Fure-Ching Jeng , Cheng-Tie Chen , Chia-Chun Huang
IPC分类号： H04N712
CPC分类号： H04N19/177 , H04N19/126 , H04N19/14 , H04N19/149 , H04N19/15 , H04N19/152 , H04N19/159 , H04N19/172 , H04N19/176 , H04N19/61
摘要： Integrated circuit provides single-pass, real-time digital image encoding by digital signal processor for variable bit rate (VBR) control to improve decoded output quality. Possible peak bit rate range for multiple groups of pictures (GOP) and averaged bit rate limit encoded signal bit rate. Possible bit rate range constraint sets upper/lower range, which is pre-specified or dynamically adapted for current and future GOPs. Signal processor calculates perceptual weighting variable at macroblock level for multiple GOPs, nominal quantization parameters for multiple GOPs, quantization parameter associated at picture level, effective bit rate for each GOP, bit allocation for each picture, and total bit allocation for multiple GOPs. Variable rate signal is recordable in DVD or camcorder device.
摘要翻译：集成电路通过数字信号处理器提供单通道实时数字图像编码，实现可变比特率（VBR）控制，以提高解码输出质量。多组图像（GOP）和平均比特率限制编码信号比特率的可能的峰值比特率范围。可能的比特率范围约束设置上/下范围，其预先指定或动态地适应当前和将来的GOP。信号处理器针对多个GOP计算宏块级的感知加权变量，针对多个GOP的标称量化参数，在图像级别相关联的量化参数，每个GOP的有效比特率，每个图像的比特分配以及针对多个GOP的总比特分配。可变速率信号可记录在DVD或摄像机设备中。

7. 发明授权

US5241395A Adaptive transform coding using variable block size 失效
标题翻译：使用可变块大小的自适应变换编码
公开(公告)号：US5241395A
公开(公告)日：1993-08-31
申请号：US859614
申请日：1992-03-23
申请人： Cheng-Tie Chen
发明人： Cheng-Tie Chen
IPC分类号： G06T9/00 , H04N1/41 , H04N7/26 , H04N7/30
CPC分类号： H04N19/85 , H04N19/119 , H04N19/154 , H04N19/176 , H04N19/60 , H04N19/96
摘要： An adaptive transform coding algorithm for a still image utilizes a quadtree based variable block size discrete cosine transform to achieve a better tradeoff between bit rate and image quality. The choice of appropriate block size is made according to a mean based decision rule which can discriminate various image contents for better visual quality.
摘要翻译：用于静止图像的自适应变换编码算法利用基于四叉树的可变块大小的离散余弦变换来实现比特率和图像质量之间更好的权衡。根据基于均值的决策规则进行适当的块大小的选择，其可以区分各种图像内容以获得更好的视觉质量。

8. 发明授权

US6011870A Multiple stage and low-complexity motion estimation for interframe video coding 失效
标题翻译：帧间视频编码的多级和低复杂度运动估计
公开(公告)号：US6011870A
公开(公告)日：2000-01-04
申请号：US896618
申请日：1997-07-18
申请人： Fure-Ching Jeng , Cheng-Tie Chen , Ting-Chung Chen
发明人： Fure-Ching Jeng , Cheng-Tie Chen , Ting-Chung Chen
IPC分类号： G06T7/20 , H04N7/26 , G06K9/36 , H04N7/12
CPC分类号： G06T7/2026 , H04N19/105 , H04N19/112 , H04N19/137 , H04N19/53
摘要： A digital signal processor encodes video signals per MPEG standard to achieve multi-stage, low-complexity motion estimation for interframe video coding. A dual-stage motion prediction module processes a compressed bitstream through pixel-averaging, and then applies a Sum-Of-Absolute-Difference (SOAD) function to the bitstream. A minimum motion vector signal is thereby generated over a search range initially for rough determination, then to provide a more refined estimation, the SOAD function is re-applied to the surrounding 16.times.16 blocks, preferably by full and half-pel vertical and horizontal offsets.
摘要翻译：数字信号处理器根据MPEG标准对视频信号进行编码，以实现帧间视频编码的多级，低复杂度运动估计。双级运动预测模块通过像素平均处理压缩比特流，然后对比特流应用绝对差值（SOAD）功能。因此，在最初用于粗略确定的搜索范围内生成最小运动矢量信号，然后提供更精确的估计，SOAD功能被重新应用于周围的16×16块，优选地通过全和半像素垂直和水平偏移。

9. 发明授权

US5121216A Adaptive transform coding of still images 失效
标题翻译：静态图像的自适应变换编码
公开(公告)号：US5121216A
公开(公告)日：1992-06-09
申请号：US381860
申请日：1989-07-19
申请人： Cheng-Tie Chen , Didier J. LeGall
发明人： Cheng-Tie Chen , Didier J. LeGall
IPC分类号： G06T9/00 , H04N7/26 , H04N7/30
CPC分类号： H04N19/154 , H04N19/126 , H04N19/132 , H04N19/14 , H04N19/176 , H04N19/60 , H04N19/124
摘要： In accordance with our adaptive transform coding algorithm for a still image, the image is divided into small blocks of pixels and each block of pixels is transformed using an orthogonal transform such as a discrete cosine transform. The resulting transform coefficients are compressed and coded to form a bit stream for transmission to a remote receiver. The compression parameters for each block of pixels are chosen based on a busyness measure for the block such as the magnitude of the (K+1).sup.th most significant transform coefficient. This enables busy blocks for which the human visual system is not sensitive to degradation to be transmitted at low bit rates while enabling other blocks for which the human visual system is sensitive to degradation to be transmitted at higher bit rates. Thus, the algorithm is able to achieve a tradeoff between image quality and bit rate.
摘要翻译：根据我们针对静止图像的自适应变换编码算法，将图像划分成小的像素块，并且使用诸如离散余弦变换的正交变换来对每个像素块进行变换。所得到的变换系数被压缩和编码以形成用于传输到远程接收器的比特流。基于块的繁忙度量（例如第（K + 1）个最高有效变换系数的大小）来选择每个像素块的压缩参数。这使得人类视觉系统对劣化不敏感的忙块以低比特率传输，同时能够以较高比特率传输人类视觉系统对其劣化敏感的其他块。因此，该算法能够实现图像质量和比特率之间的权衡。

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