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1. 发明授权

US5253054A Frame skip encoding apparatus for moving images 失效
标题翻译：用于移动图像的帧跳过编码装置
公开(公告)号：US5253054A
公开(公告)日：1993-10-12
申请号：US752095
申请日：1991-08-29
申请人： Hiroshi Fujiwara , Hiroo Uwabu , Masanori Maruyama , Eiji Kakii
发明人： Hiroshi Fujiwara , Hiroo Uwabu , Masanori Maruyama , Eiji Kakii
IPC分类号： G06T9/00 , H04N11/04 , H04N19/126 , H04N19/132 , H04N19/15 , H04N19/172 , H04N19/176 , H04N19/196 , H04N19/423 , H04N19/46 , H04N19/503 , H04N19/51 , H04N19/60 , H04N19/61 , H04N19/625 , H04N19/70 , H04N19/82 , H04N19/85 , H04N19/91 , H04N7/12
CPC分类号： H04N19/587 , H04N19/126 , H04N19/132 , H04N19/172 , H04N19/60 , H04N19/61 , H04N19/124 , H04N19/146 , H04N19/152
摘要： In a moving image encoding apparatus, an image signal is converted into a digital image signal by an A/D converter and is stored in frame memory 110. In addition, a movement vector detector 300 detects a movement of the output of the frame memory 110. In an orthogonal transformer 130, a difference signal between a present frame image which is stored in the frame memory 110 and a previous frame image which is stored in a variable delay frame memory 210 is supplied, in which the difference signal is converted by orthogonal transformation. The orthogonally transformed transformation signal is quantized into a linear or nonlinear discrete level on the basis of a step width of quantization from a step size controller 600 in a quantizer 140. Then, the quantized data is encoded into a variable length code in a variable length encoder 150. A movement vector detector 300 detects movement of the image by pattern matching processing between the present frame and the previous frame. A movement vector/encoding mode judger 310 generates the movement vector 3 and the encoding mode 4. The variable length code is transmitted to the transmission circuit after adding a movement vector 3 and encoding mode 4. In these operations, a frame rate controller 700 controls the processing rate of each frame image in the entire apparatus. Frame rate controller 700 calculates a total frame skip number S.sub.T which corresponds to the total number of frames that are not transmitted after a frame has been transmitted. The total frame skip number S.sub.T is calculated by selecting a smaller sum of an externally set signal S.sub.min, signal S.sub.M which is calculated from the degree of movement compensation and S.sub.S which is calculated from the degree of quantization, and an externally set signal S.sub.max.
摘要翻译：在运动图像编码装置中，图像信号由A / D转换器转换为数字图像信号，并被存储在帧存储器110中。此外，运动矢量检测器300检测帧存储器110的输出的移动在正交变换器130中，提供存储在帧存储器110中的当前帧图像与存储在可变延迟帧存储器210中的先前帧图像之间的差分信号，其中差分信号通过正交变换转型。基于来自量化器140中的步长控制器600的量化的步长，将正交变换的变换信号量化为线性或非线性离散电平。然后，量化数据被编码为可变长度的可变长度码移动矢量检测器300通过当前帧和前一帧之间的模式匹配处理来检测图像的移动。移动向量/编码模式判断器310生成移动向量3和编码模式4.在添加了移动向量3和编码模式4之后，将可变长度码发送到发送电路。在这些操作中，帧速率控制器700控制整个设备中每个帧图像的处理速率。帧速率控制器700计算与发送帧之后未发送的帧的总数相对应的总帧跳过数ST。通过从外部设定信号Smin，由从量化度计算出的运动补偿量SS和从外部设定信号Smax计算的信号SM中选择较小的和来计算总帧跳过数ST。

2. 发明授权

US5241401A Image signal encoding apparatus and method for controlling quantization step size in accordance with frame skip numbers 失效
标题翻译：图像信号编码装置和方法，用于根据帧跳跃编号控制量化步长
公开(公告)号：US5241401A
公开(公告)日：1993-08-31
申请号：US752072
申请日：1991-08-29
申请人： Hiroshi Fujiwara , Hiroo Uwabu , Masanori Maruyama , Eiji Kakii
发明人： Hiroshi Fujiwara , Hiroo Uwabu , Masanori Maruyama , Eiji Kakii
IPC分类号： H04N1/41 , G06T9/00 , H04N19/00 , H04N19/126 , H04N19/134 , H04N19/15 , H04N19/189 , H04N19/196 , H04N19/423 , H04N19/46 , H04N19/503 , H04N19/51 , H04N19/61 , H04N19/625 , H04N19/70 , H04N19/82 , H04N19/85 , H04N19/91
CPC分类号： H04N19/587 , H04N19/115 , H04N19/126 , H04N19/132 , H04N19/172 , H04N19/176 , H04N19/60 , H04N19/61 , H04N19/124 , H04N19/146 , H04N19/152
摘要： An image signal encoding apparatus having a control means for detecting a degree of redundancy of an inputted image signal and for conducting frame skip control based on a frame skip number determination and a determined skip number, an encoding processing means for processing a frame signal indicated by a transmission from said control means by block units into which a screen is divided, quantizing this signal, and encoding and outputting this signal through the medium of a transmission buffer, and a step size control means for controlling the step size of the quantization, characterized in that the step size control means comprises a correction buffer amount calculation means, which calculates a correction buffer amount indicating an excess in the transmission buffer from the frame skip number and a previously supplied transmission speed, and a step size calculation means, which outputs a quantization step size which is smaller as the correction buffer amount indicates a larger excess of the transmission buffer.
摘要翻译：一种图像信号编码装置，具有控制装置，用于检测输入图像信号的冗余度，并且用于基于帧跳过数确定和确定的跳过数进行帧跳过控制;编码处理装置，用于处理由来自所述控制装置的传输通过划分屏幕的块单元，量化该信号，以及通过传输缓冲器的介质对该信号进行编码和输出;以及步长控制装置，用于控制量化的步长，其特征在于步长控制装置包括校正缓冲量计算装置，其从帧跳数和先前提供的传输速度计算指示发送缓冲器中的超量的校正缓冲量，以及步长计算装置，其输出随着校正缓冲量的减小，量化步长变大 s的传输缓冲区。

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