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51. 发明授权

US4270148A Facsimile transmission apparatus 失效
标题翻译：传真传送装置
公开(公告)号：US4270148A
公开(公告)日：1981-05-26
申请号：US56568
申请日：1979-07-11
申请人： Eiichi Adachi
发明人： Eiichi Adachi
IPC分类号： H04B1/66 , G06T9/00 , H04N1/413 , H04N1/419 , H04N7/12
CPC分类号： H04N1/419 , G06T9/005
摘要： An input buffer (16) functions to store one line of data from a scanner (12) while feeding out a previous line to a run length encoder (17). The compressed data is fed from the run length encoder (17) to an output buffer memory (19) having a fixed capacity. The compressed data is fed to the output buffer (19) intermittently while it is fed out of the output buffer (19) continuously for modulation and transmission. In response to a start signal indicating that a line of data has been stored in the input buffer (16), fill bits are fed to the output buffer (19) at high speed until a full signal is generated indicating that the output buffer (19) is full. Then, a sync signal is fed to the output buffer (19) followed by compressed data from the run length encoder (17).
摘要翻译：输入缓冲器（16）用于在向行程长度编码器（17）输出前一行时存储来自扫描器（12）的一行数据。压缩数据从运行长度编码器（17）馈送到具有固定容量的输出缓冲存储器（19）。压缩数据被间歇地馈送到输出缓冲器（19），同时连续输出输出缓冲器（19）进行调制和传输。响应于指示数据行已经存储在输入缓冲器（16）中的开始信号，填充比特以高速被馈送到输出缓冲器（19），直到生成指示输出缓冲器（19）的完整信号）已满。然后，将同步信号馈送到输出缓冲器（19），随后来自游程长度编码器（17）的压缩数据。

52. 发明授权

US4237494A Facsimile system 失效
标题翻译：传真系统
公开(公告)号：US4237494A
公开(公告)日：1980-12-02
申请号：US59478
申请日：1979-07-20
申请人： Shingo Yamaguchi
发明人： Shingo Yamaguchi
IPC分类号： H04N1/413 , H04N1/17 , H04N1/419 , H04N1/40
CPC分类号： H04N1/17 , H04N1/419
摘要： In a facsimile system capable of performing the read scanning, record scanning and transmission processing of image element data line by line, a buffer apparatus on the transmission side stores therein the image element data obtained from a scanner in units of two lines and a buffer apparatus on the reception side applies the image element data therefrom to a printer in units of two lines, whereby the suspension time of a subscanning pulse motor is set equivalent to the minimum scanning time for two lines of the image element data.
摘要翻译：在能够逐行执行读取扫描，记录图像元素数据扫描和发送处理的传真机系统中，发送侧的缓冲装置在其中存储从扫描仪以两行为单位获得的图像元素数据和缓冲装置在接收侧，以两行为单位将图像元素数据应用于打印机，由此将副扫描脉冲电机的停止时间设定为相当于两行图像元素数据的最小扫描时间。

53. 发明授权

US4056828A Run length encoding and decoding methods and means 失效
标题翻译：运行长度编码和解码的方法和手段
公开(公告)号：US4056828A
公开(公告)日：1977-11-01
申请号：US726865
申请日：1976-09-27
申请人： Eiichiro Furuta
发明人： Eiichiro Furuta
IPC分类号： G06T9/00 , H04N1/413 , H04N7/12
CPC分类号： G06T9/005 , H04N1/4135
摘要： Black and white run length encoding means first convert a binary video input signal having a raster scan format into binary black and white run length message codes which are preselected so that the initial or lead bit of each of those codes is at a given logic level. Ternary encoding means then convert the binary message codes into a series of ternary black and white run length message codes which have distinctive amplitude transitions at any intra-scan line code boundaries. To recover the video signal, the process is reversed. Moreover, a passband signal for transmitting the ternary codes from a transmitting terminal to a receiving terminal via a limited bandwidth communications channel may be provided by amplitude modulating a carrier frequency signal in accordance with the ternary codes.
摘要翻译：黑白游程长度编码装置首先将具有光栅扫描格式的二进制视频输入信号转换为预先选择的二进制黑白游程长度消息代码，使得每个代码的初始位或引导位处于给定的逻辑电平。然后，三进制编码装置将二进制消息代码转换成一系列在任何扫描行代码边界处具有不同幅度转换的三进黑白游程长度消息代码。为了恢复视频信号，该过程相反。此外，可以通过根据三进制码对载波频率信号进行幅度调制来提供用于经由有限带宽通信信道从发送终端向接收终端发送三进制码的通带信号。

54. 发明授权

US4027337A Installation for the remote transmission of facsimiles 失效
标题翻译：安装传真机远程传输
公开(公告)号：US4027337A
公开(公告)日：1977-05-31
申请号：US602517
申请日：1975-08-06
申请人： Martin de Loye , Michel Beduchaud
发明人： Martin de Loye , Michel Beduchaud
IPC分类号： H04N1/21 , H04N1/413 , G11B15/46
CPC分类号： H04N1/413
摘要： Installation for the remote transmission of facsimiles, comprising a telecopy transmitter device connected by a telephone line to a telecopy receiver device and comprising two buffer memories adapting the transmission speed of the line to that of the transmitter and to that of the receiver respectively. The buffer memories are each constituted by a multi-track magnetic tape driven by a motor controlled by a time base having high stability; the buffer memory on the receiver side comprises, moreover, an electronic assembly, between the magnetic tape and the telecopy receiver device, intended for compensating short-term changes in speed of the tapes.
摘要翻译：安装用于远程传输传真机，包括通过电话线路连接到电视摄影接收机设备并且包括两个缓冲存储器的两个缓冲存储器，所述两个缓冲存储器分别适配线路的传输速度和接收机的传输速度。缓冲存储器各自由由具有高稳定性的时基控制的电动机驱动的多磁道磁带构成; 此外，接收机侧的缓冲存储器还包括用于补偿磁带的速度的短期变化的磁带和电传摄像接收机设备之间的电子组件。

55. 发明授权

US3995106A Information transmission system 失效
标题翻译：信息传输系统
公开(公告)号：US3995106A
公开(公告)日：1976-11-30
申请号：US468381
申请日：1974-05-09
申请人： Carl Rune Wern , George Herman Wern
发明人： Carl Rune Wern , George Herman Wern
IPC分类号： H04N1/00 , H04N1/327 , H04N1/413 , H04N7/18
CPC分类号： H04N1/00408 , H04N1/0035 , H04N1/327 , H04N1/413
摘要： The invention refers to a system for rapidly transferring optical information from a document to a human being over a telecommunication channel. The system comprises an optical reader connected over the telecommunication channel to a visual display terminal which is provided with an alphanumeric character generator and from which the speed of reading at the optical reader is remotely controlled.
摘要翻译：本发明涉及一种用于通过电信信道将光信息从文件快速传送到人的系统。该系统包括通过电信通道连接到具有字母数字字符发生器的视觉显示终端的光学读取器，并且远程控制光学读取器的读取速度。

56. 发明授权

US3973079A Two-level picture signal transmission system 失效
标题翻译：二级图像信号传输系统
公开(公告)号：US3973079A
公开(公告)日：1976-08-03
申请号：US531173
申请日：1974-12-09
申请人： Takahiko Fukinuki , Yoshizumi Eto
发明人： Takahiko Fukinuki , Yoshizumi Eto
IPC分类号： H04N1/413 , H04N1/415 , H04L27/20
CPC分类号： H04N1/415 , H04N1/4135
摘要： In a transmission system in which two-level picture signal is divided into blocks, each having a predetermined number of picture elements, the pieces of signal contained in the respective blocks are converted to a predetermined number of codes, and the codes are converted to modulated signals having different levels or phase, the modulator circuit is so designed that any two modulated signals causing the shifting of the contour of picture may be converted to two signals having adjacent levels or phases, so as to minimize the degradation of the quality of the reproduced picture due to code errors caused during transmission.
摘要翻译：在其中将两电平图像信号划分成块的传输系统中，每个具有预定数量的像素，将包含在各个块中的信号转换成预定数量的码，并将码转换成调制具有不同电平或相位的信号，调制器电路被设计成使得导致图像轮廓移位的任何两个调制信号可以被转换成具有相邻电平或相位的两个信号，以便最小化再现的质量的劣化由于传输过程中导致的代码错误导致的图像。

57. 发明授权

US3909515A Facsimile system with memory 失效
标题翻译：具有记忆功能的传真系统
公开(公告)号：US3909515A
公开(公告)日：1975-09-30
申请号：US34530973
申请日：1973-03-27
申请人： MAGNAVOX CO
发明人： EVANSEN ARTHUR W
IPC分类号： H04N1/413 , H04N1/02
CPC分类号： H04N1/413
摘要： A facsimile system for reproducing a picture having a multiplicity of lines typically including dense areas of a first type of data bounded by significant areas of a second type of data. A scanner views a particular line of the picture and provides a first stream of data having digital characteristics dependent upon the first and second types of data in the line viewed. A transmitter includes a first memory for storing the first stream of digital data and means for ascertaining the addresses in the memory which correspond to the first and last addresses of each of the dense areas of the data. The transmitter then transmits on a communication channel the first and last addresses followed by the data therebetween for each of the dense areas. A receiver connected to the channel includes a second memory for storing the transmitted data between memory addresses corresponding to the transmitted addresses so that a second stream of data similar to the first stream of data is constructed in the second memory. A printer is responsive to the second stream of data in the second memory to reproduce a line of the picture.
摘要翻译：一种用于再现具有多条线的图像的传真系统，通常包括由第二类型的数据的有效区域限定的第一类型数据的密集区域。 A扫描器查看图像的特定行并且提供具有取决于所查看的行中的第一和第二类型的数据的数字特征的第一数据流。发射机包括用于存储第一数字数据流的第一存储器和用于确定对应于数据的每个密集区域的第一和最后地址的存储器中的地址的装置。然后，发射机在通信信道上发送第一和最后地址，然后在每个密集区域之间发送它们之间的数据。连接到信道的接收机包括第二存储器，用于在与发送的地址相对应的存储器地址之间存储发送的数据，使得在第二存储器中构造与第一数据流类似的第二数据流。打印机响应于第二存储器中的第二数据流来再现图像的一行。

58. 发明授权

US3726993A Data compression methods and apparatus 失效
标题翻译：数据压缩方法和装置
公开(公告)号：US3726993A
公开(公告)日：1973-04-10
申请号：US3726993D
申请日：1971-12-10
申请人： XEROX CORP
发明人： LAVALLEE P
IPC分类号： H04B1/66 , H04N1/413 , H04N1/415 , H04N7/12
CPC分类号： H04N1/415
摘要： Data compression methods and the apparatus therefor are provided in accordance with the teachings of the present invention. According to one embodiment of this invention data signals are progressively combined to form successively decreasing numbers of groups of combined signals until a single group of signals is obtained. Those groups of combined signals containing nonredundant information are selectively transmitted. The selectively transmitted groups of combined signals are received and decoded whereby original data signals are regenerated. The data signals may comprise a multibit digital word or may represent video information. Encoding of the data signals removes redundant portions therefrom.
摘要翻译：根据本发明的教导提供数据压缩方法及其装置。根据本发明的一个实施例，数据信号逐渐组合以形成连续递减的组合信号组，直到获得单个信号组。选择性地发送包含非冗余信息的组合信号组。接收和解码有选择地发送的组合信号组，从而再生原始数据信号。数据信号可以包括多位数字字，或者可以表示视频信息。数据信号的编码从其中去除冗余部分。

59. 发明授权

US3651251A Facsimile signal modification reducing the information channel band-width 失效
标题翻译： FACSIMILE信号修改减少了信道的宽度
公开(公告)号：US3651251A
公开(公告)日：1972-03-21
申请号：US3651251D
申请日：1970-05-01
申请人： INT SCANATRON SYSTEMS CORP
发明人： CLARK JOHN H
IPC分类号： H04N1/413 , H04N7/10
CPC分类号： H04N1/4135
摘要： Shortening the marking pulses (non-background) by an amount equal to the shortest pulse which the system is intended to pass improves the performance of the three level, band-width reducing system described in the application entitled ''''Facsimile Signal Modification Reducing the Information Channel Band-Width'''' filed on Dec. 21, 1967 and bearing Ser. No. 701,511 now U.S. Pat. No. 3,588,330. As pointed out in the above referred to patent the three level signal generated in accordance with the disclosure is asymmetric with the background being represented by the outside pair of levels and the line information as the center level. This mode of operation results in a system wherein the band-width required for background-to-background transitions is halved. In such a system, however, closely spaced black to white transitions in series approach the symmetrical alternating condition and therefore are passed with varying efficiency. For transitions representing small segments of background in a field of markings, no bandwidth compression occurs. This causes a deficiency in the actual copy. Another characteristic of the original system described in the above referred to application is that modulation depth varies as the keying speed is increased above a certain point. Note that for a symmetrical three level wave the channel band-width restriction filters process a three level signal at the limit of resolution to a sine wave having a peak-to-peak value of one-half the value of the original wave.
摘要翻译：将标记脉冲（非背景）缩短等于系统旨在通过的最短脉冲的量改善了题为“传真信号修改减少信息信道的应用中描述的三级带宽减小系统的性能带宽“，1967年12月21日提交。现在美国专利No. 第3,588,330号。

60. 发明授权

US3649751A Compressed bandwidth transmission sysem 失效
标题翻译：压缩带宽传输系统
公开(公告)号：US3649751A
公开(公告)日：1972-03-14
申请号：US3649751D
申请日：1970-01-23
申请人： STEWART WARNER CORP
发明人： SO RICHARD T
IPC分类号： H04N1/403 , H04N1/413 , H04N1/40
CPC分类号： H04N1/403 , H04N1/4135
摘要： A system for reducing the required bandwidth in a facsimile data transmission system or the like in which a two level digital signal, which may be derived from an analog scanning signal, is caused to be converted into and transmitted as a duo-binary signal whenever the digital signal pulse rate is greater than a predetermined minimum and transmitted as a binary signal whenever the pulse rate is lower than the predetermined rate. The system operates to produce signals which vary from an intermediate level representing black to one of two outer levels representing white as long as each black representing pulse is longer than a predetermined duration. If the black pulse is shorter than the predetermined duration the signal changes to vary between the intermediate or black level and the other lower or white level. A two level to three level converter comprising a differential amplifier and a flip-flop is shown as well as a digitally operated toggle switch for switching the level converter. In addition, a novel analog to digital converter utilizing a differential amplifier operating about an average DC slicing level is disclosed.
摘要翻译：一种用于减少传真数据传输系统等中所需带宽的系统，其中可以从模拟扫描信号导出的两级数字信号被转换为二进制信号并作为二进制二进制信号发送，数字信号脉冲频率大于预定的最小值，并且每当脉率低于预定速率时作为二进制信号发送。只要每个黑色表示脉冲长于预定持续时间，该系统就产生从表示黑色的中间电平到表示白色的两个外部电平之一变化的信号。如果黑色脉冲短于预定持续时间，则信号变化在中间或黑色电平和另一个较低或白色电平之间变化。示出了包括差分放大器和触发器的两级至三级转换器以及用于切换电平转换器的数字操作拨动开关。此外，公开了一种利用在平均DC切片电平上工作的差分放大器的新颖模数转换器。

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