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41. 发明授权

US4845569A Image transmission or encoding apparatus 失效
标题翻译：图像传输或编码装置
公开(公告)号：US4845569A
公开(公告)日：1989-07-04
申请号：US243231
申请日：1988-09-07
申请人： Sadasuke Kurahayashi , Masahiro Sakamoto , Masatomo Takahashi , Motoaki Yoshino , Yasuhide Ueno , Tsunehiro Watanabe , Tsuneo Negi , Takeshi Ono , Shigeo Miura
发明人： Sadasuke Kurahayashi , Masahiro Sakamoto , Masatomo Takahashi , Motoaki Yoshino , Yasuhide Ueno , Tsunehiro Watanabe , Tsuneo Negi , Takeshi Ono , Shigeo Miura
IPC分类号： G06T9/00 , H04N1/333 , H04N1/417
CPC分类号： H04N1/33338 , G06T9/005 , H04N1/33307 , H04N1/4175
摘要： An image transmission apparatus including a storage unit for storing an image signal; a conversion unit for converting the number of dots of one line image signal in the storage unit; and a transmission unit for selectively transmitting the output of the conversion unit or an image signal in the storage unit.
摘要翻译：一种图像传输装置，包括：存储单元，用于存储图像信号; 转换单元，用于转换存储单元中的一行图像信号的点数; 以及传输单元，用于选择性地传送转换单元的输出或存储单元中的图像信号。

42. 发明授权

US4839738A Apparatus for decoding facsimile coded data to image data with coding and reference line windowing and color change detection 失效
标题翻译：用于将传真编码数据解码为具有编码和参考线窗口和颜色变化检测的图像数据的装置
公开(公告)号：US4839738A
公开(公告)日：1989-06-13
申请号：US41261
申请日：1987-04-22
申请人： Shinkyo Kaku , Chung-Li Yu
发明人： Shinkyo Kaku , Chung-Li Yu
IPC分类号： H04N1/417
CPC分类号： H04N1/4175
摘要： A decoder receives a series of input words defining variable length facsimile codes and generates pixel data to form a facsimile of an image. A code windowing apparatus selects a variable length code from the received series of words. A decoding ROM generates intermediate codes and code window control signals in response to the selected variable length codes. A reference windowing apparatus connected to receive pixel data generated during the decode of a previous scan line of the facsimile, selects a reference window of pixel data from a previous scan line. A color change detector indentifies a position of a color change picture element in the reference window. Output pixel data is generated in response to the intermediate codes and the position of the color change picture element in the reference window.

43. 发明授权

US4814890A Image communicating system 失效
标题翻译：图像通信系统
公开(公告)号：US4814890A
公开(公告)日：1989-03-21
申请号：US798316
申请日：1985-11-15
申请人： Yoshiaki Kato
发明人： Yoshiaki Kato
IPC分类号： H04N1/32 , H04N1/333 , H04N1/417
CPC分类号： H04N1/32368 , H04N1/32363 , H04N1/33307 , H04N1/417
摘要： An image communicating system such as a facsimile for transmitting and/or receiving image data. This system comprises a reader to read an original image at the first resolution, a coder to code the image signal of the first resolution obtained by the reader, an image memory to store the signal coded by the coder, a converter to convert the signal read out from the image memory to a signal of a recording resolution on the reception side, and a transmitter to transmit an output signal of the converter. The image memory is commonly used as a reception memory, a broadcasting transmission memory, and a retention memory for multicopy, so that the memory capacity can be reduced. The pixel density of the transmitting image data is converted in accordance with the recording pixel density on the reception side. Thus, the image data of a high quality can be derived and printed by a high-speed laser printer on the reception side without changing the image size.
摘要翻译：图像传送系统，例如用于发送和/或接收图像数据的传真机。该系统包括以第一分辨率读取原始图像的读取器，用于对由读取器获得的第一分辨率的图像信号进行编码的编码器，用于存储由编码器编码的信号的图像存储器，转换器，用于转换读取的信号从图像存储器输出到接收侧的记录分辨率的信号，以及发送器，用于发送转换器的输出信号。图像存储器通常用作接收存储器，广播发送存储器和用于多重复制的保留存储器，从而可以减少存储器容量。根据接收侧的记录像素密度来转换发送图像数据的像素密度。因此，高质量的图像数据可以由接收侧的高速激光打印机导出并打印而不改变图像尺寸。

44. 发明授权

US4800440A Digital image signal coding/decoding circuit with buffer memory storing reference line as compression codes 失效
标题翻译：具有缓冲存储器的数字图像信号编码/解码电路将参考线作为压缩码
公开(公告)号：US4800440A
公开(公告)日：1989-01-24
申请号：US946434
申请日：1986-12-23
申请人： Hidefumi Kurokawa
发明人： Hidefumi Kurokawa
IPC分类号： H04N1/413 , H04N1/417 , H04N1/41
CPC分类号： H04N1/4175
摘要： A digital signal coding/decoding circuit for coding/decoding digital scanning line signals by means of an MR coding/decoding algorithm has an MR coding/decoding circuit, a line buffer for temporarily storing information about a reference line which has been already coded or decoded, and a preparation circuit for producing compression codes from the reference line and for later expanding the compression codes into the reference line. The line buffer can be compact because it temporarily stores the compression codes rather than the reference line itself.
摘要翻译：用于通过MR编码/解码算法对数字扫描线信号进行编码/解码的数字信号编码/解码电路具有MR编码/解码电路，用于临时存储关于已被编码或解码的参考线的信息的行缓冲器以及用于从参考线产生压缩码并用于稍后将压缩码扩展到参考线中的准备电路。行缓冲区可以紧凑，因为它暂时存储压缩码而不是参考线本身。

45. 发明授权

US4760461A Binary data compression and expansion processing apparatus 失效
标题翻译：二进制数据压缩和扩展处理装置
公开(公告)号：US4760461A
公开(公告)日：1988-07-26
申请号：US18283
申请日：1987-02-24
申请人： Fumitaka Sato
发明人： Fumitaka Sato
IPC分类号： H03M7/42 , G06T9/00 , H04N1/417 , H04N1/413
CPC分类号： G06T9/00 , H04N1/4175
摘要： According to a binary data compression and expansion processing apparatus of this invention, a reference line data storage section for storing reference line data is separately provided from an image data memory. Binary data input through an input data bus is subjected to compression and expansion processing by a compression and expansion processing section in accordance with reference line data read out from the reference line data storage section, and the processed result is output to an external device through an output data bus. The compression and expansion processing section comprises a decoding processing section, for generating run length data corresponding to input encoded data in expansion processing, and a generation processing section, for generating image data in expansion processing. The decoding processing section and the generation processing section serve as stages of pipeline processing, whereby the apparatus receives data to be processed from the input data bus and unidirectionally executes processing.
摘要翻译：根据本发明的二进制数据压缩和扩展处理装置，从图像数据存储器分别提供用于存储参考线数据的参考线数据存储部分。通过输入数据总线输入的二进制数据由压缩扩展处理部根据从基准线数据存储部读出的基准线数据进行压缩扩展处理，经处理后的结果通过输出数据总线。压缩和扩展处理部分包括用于在扩展处理中产生与输入的编码数据相对应的游程长度数据的解码处理部分，以及用于在扩展处理中生成图像数据的生成处理部分。解码处理部分和生成处理部分用作流水线处理的阶段，由此该装置从输入数据总线接收要处理的数据，并且单向执行处理。

46. 发明授权

US4630124A Quality selectable facsimile image coding system 失效
标题翻译：质量可选传真图像编码系统
公开(公告)号：US4630124A
公开(公告)日：1986-12-16
申请号：US680298
申请日：1984-12-11
申请人： Toshiaki Endoh , Yasuhiro Yamazaki
发明人： Toshiaki Endoh , Yasuhiro Yamazaki
IPC分类号： G06T9/00 , H04N1/411 , H04N1/417
CPC分类号： H04N1/4172 , H04N1/411
摘要： A facsimile signal coding system is disclosed, in which initial encoding is performed for detecting, from picture elements forming a facsimile picture signal, picture elements at intervals of .DELTA.X picture elements on every .DELTA.Yth line and encoding the detected picture elements. Encoding of mode 1 is carried out for encoding, by referring to four of the encoded picture elements, a picture element surrounded by the reference picture elements and lying centrally thereof. Encoding of mode 2 is performed by encoding, by referring to four picture elements encoded by the initial encoding and the encoding of mode 1, a picture element surrounded by the four picture elements lying above and below it and on its left and right. The initial encoding and the encoding of mode 1 and mode 2 are effected using 2.sup.n (where n is an integer) as an initial value of each of the .DELTA.X and .DELTA.Y and thereafter the encoding operations of mode 1 and mode 2 are repeated with the values of the .DELTA.X and .DELTA.Y reduced by half.
摘要翻译：公开了一种传真信号编码系统，其中执行初始编码以从形成传真图像信号的图像元素以每个DELTA Y行上的DELTA X像素的间隔检测图像元素，并对所检测的图像元素进行编码。执行模式1的编码，通过参考四个编码图像元素，由参考图像元素包围并位于其中央的像素进行编码。模式2的编码通过参照由初始编码编码的四个图像元素和模式1的编码来进行编码，由四个图像元素围绕在其上方和下方以及它的左侧和右侧。模式1和模式2的初始编码和编码使用2n（其中n是整数）作为DELTA X和DELTA Y中的每一个的初始值来实现，然后重复模式1和模式2的编码操作， DELTA X和DELTA Y的值减少了一半。

47. 发明授权

US4597016A Encoding/decoding system 失效
标题翻译：编码/解码系统
公开(公告)号：US4597016A
公开(公告)日：1986-06-24
申请号：US568413
申请日：1984-01-05
申请人： Kozo Nakamura , Yasuyuki Kojima , Nagaharu Hamada
发明人： Kozo Nakamura , Yasuyuki Kojima , Nagaharu Hamada
IPC分类号： H04N1/417 , H04N1/40
CPC分类号： H04N1/4175
摘要： An encoding/decoding system to be connected to an external microcomputer, video memory, photoelectric reader or printer comprises an address generator for generating an address to access the video memory word by word, a transition point detector for parallelly processing a video signal word by word to detect a color information transition point address, and execution unit for calculating an address difference from two color information transition point addresses or the color information transition point address based on a difference between two color information transition point addresses, an encoding/decoding table for converting an address difference to a code word and converting a code word to an address difference, and a decoded video signal generator for parallelly reproducing a video signal based on the address difference.
摘要翻译：要连接到外部微型计算机，视频存储器，光电读取器或打印机的编码/解码系统包括一个地址发生器，用于产生一个逐字地访问视频存储器的地址，一个逐点并行处理视频信号的转换点检测器检测颜色信息转换点地址，以及执行单元，用于基于两个颜色信息转换点地址之间的差异，从两个颜色信息转换点地址或颜色信息转换点地址计算地址差异，用于转换的编码/解码表与码字的地址差异并将码字转换为地址差，以及解码视频信号发生器，用于基于地址差并行地再现视频信号。

48. 发明授权

US4581638A Method of and system for coding a two-dimensional data array 失效
标题翻译：用于编码二维数据阵列的方法和系统
公开(公告)号：US4581638A
公开(公告)日：1986-04-08
申请号：US515362
申请日：1983-07-19
申请人： Leonardo Chiariglione , Mario Guglielmo
发明人： Leonardo Chiariglione , Mario Guglielmo
IPC分类号： H04N7/26 , H04N7/30 , H04N7/12 , H04N1/40 , H04N1/417 , H04N1/419
CPC分类号： H04N19/192 , H04N19/147 , H04N19/152 , H04N19/154 , H04N19/176 , H04N19/184 , H04N19/60 , H04N19/13 , H04N19/146 , H04N19/91
摘要： A two-dimensional data array, such as an orthogonally scanned television image, is divided into a multiplicity of elemental blocks each containing a given number of PCM samples which are converted by linear transformation into a series of coefficients to be quantized for transmission to a remote receiver. The data blocks are processed one at a time by an iterative coder which allots a progressively increasing number of bits to a given block in successive operating stages, the bits being allocated to the several coefficients of the block according to the position of the barycenter of their signal energy assigning the block to one of K classes. An initial overall reconstruction error, computed from the coefficients of a block with no bits yet available for quantization, is updated with each bit allotment in the course of an iteration in which a selected coefficient is subjected to simultaneous coding with S quantizers differing from one another in their quantum steps. The coding operations of the S concurrently active quantizers have different error-reducing effects and the resulting minimum error is compared with a threshold which itself may be variable according to the activity of the image block being processed. When the residual overall error falls below that threshold, processing is terminated and the bits used in the coding of each coefficient are sequentially sent out together with a count of the total number of bits allotted to the block and a parameter k indicating its classification, this information enabling the receiver to reconstruct the image within the limits of the tolerated residual error.
摘要翻译：诸如正交扫描的电视图像的二维数据阵列被分成多个元素块，每个元素包含给定数量的PCM样本，其通过线性变换转换成要量化的一系列系数以传输到远程接收器。通过迭代编码器一次处理数据块，该迭代编码器在连续的操作阶段向给定块分配逐渐增加的位数，根据它们的重心的位置将这些位分配给块的几个系数信号能量将块分配给K类之一。从迭代中没有比特的块的系数计算出的初始整体重构误差在迭代过程中被更新，其中所选系数经历与彼此不同的S量化器的同时编码在他们的量子步骤。 S同时有效量化器的编码操作具有不同的误差降低效果，并且将所得到的最小误差与其本身可以根据正在处理的图像块的活动而可变的阈值进行比较。当剩余总误差低于该阈值时，处理终止，并且将每个系数的编码中使用的比特顺序地发送到分配给该块的总比特数的计数和表示其分类的参数k，这使得接收机能够在容许残余误差的范围内重建图像的信息。

49. 发明授权

US4578704A Image coding technique 失效
标题翻译：图像编码技术
公开(公告)号：US4578704A
公开(公告)日：1986-03-25
申请号：US505885
申请日：1983-06-20
申请人： Hamid Gharavi
发明人： Hamid Gharavi
IPC分类号： H04N7/26 , H04N7/32 , H04N7/12 , H04N1/40 , H04N1/417 , H04N1/419
CPC分类号： H04N19/50 , H04N19/30
摘要： In a first embodiment, an image signal is segmented into bilevel and multilevel regions. The picture elements, or pels, representing the bilevel regions are center-thresholded and encoded using a two-dimensional CCITT coding scheme. The pels representing the multilevel regions are coded in a differential pulse code modulation (DPCM) coder. The resulting DPCM errors are coded by an intermediate coder which assigns the i.sup.th one of an ordered plurality of codewords to represent each pel whose value is the i.sup.th most-frequently-expected to occur, given the values of predetermined ones of the neighbor pels. The intermediate codeword values are assigned such that the intermediate coder output stream contains long bit runs. That output stream is then run- and variable-length coded in accordance with a one-dimensional CCITT bilevel image coding scheme. In a second embodiment, 3-bit DPCM words are coded by assigning a variable length codeword to represent each pel a a function of its expected frequency of occurrence given the neighbor pel values.
摘要翻译：在第一实施例中，图像信号被分割为双层和多层区域。表示二级区域的图像元素或像素使用二维CCITT编码方案进行中心阈值化和编码。表示多电平区域的像素在差分脉冲编码调制（DPCM）编码器中进行编码。所得到的DPCM错误由中间编码器编码，该中间编码器分配有序多个码字中的第i个，以给出相邻像素的预定值的值，其中值是最频繁预期发生的每个像素。分配中间码字值使得中间编码器输出流包含长位运行。然后，该输出流根据一维CCITT二级图像编码方案进行可变长度编码。在第二实施例中，通过分配可变长度码字来代表给定相邻像素值的其预期出现频率的函数来代表每个像素来对3位DPCM字进行编码。

50. 发明授权

US4470072A Method of band compression 失效
标题翻译：频带压缩方法
公开(公告)号：US4470072A
公开(公告)日：1984-09-04
申请号：US416175
申请日：1982-09-09
申请人： Akiyoshi Tanaka , Kunio Sannomiya , Hiroaki Kotera , Kunio Yoshida , Yoshihiro Uno , Hiroaki Miwa
发明人： Akiyoshi Tanaka , Kunio Sannomiya , Hiroaki Kotera , Kunio Yoshida , Yoshihiro Uno , Hiroaki Miwa
IPC分类号： H04B1/66 , H04N1/41 , H04N1/417 , H04N7/12
CPC分类号： H04N1/417 , H04N1/41
摘要： In a band compression method using an adaptive prediction system preferably applicable to facsimile transmission, a method of selecting picture elements to be referred (hereinafter defined as reference picture elements) for predicting an information value of a picture element wherein the reference picture elements are not selected uniformly and continuously from the neighborhood of the predicted picture element, but a group of picture elements (the first order picture elements) adjacent to the predicted picture element and further a group of picture elements of equal or higher order than the third order are selected as reference picture elements by excluding those shaded picture elements which lie on lines connecting the predicted picture element and the first order picture elements.
摘要翻译：在使用优选适用于传真发送的自适应预测系统的频带压缩方法中，选择要参考的图像元素（以下称为参考图像元素）的方法，用于预测未选择参考图像元素的图像元素的信息值从预测图像的附近均匀且连续地选择与预测图像元素相邻的一组图像元素（一级像素），另外还选择与三阶相等或更高阶的一组图像元素作为通过排除位于连接预测图像元素和第一级图像元素的线上的阴影图像元素的参考图像元素。

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