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11. 发明授权

US5592639A Device and method for writing in a storage device of the queue type 失效
标题翻译：在队列类型的存储设备中写入的设备和方法
公开(公告)号：US5592639A
公开(公告)日：1997-01-07
申请号：US176675
申请日：1994-01-03
申请人： Jean-Claude Guillon
发明人： Jean-Claude Guillon
IPC分类号： G06F7/00 , G06F5/06 , G06F7/78 , H04N7/169 , G06F12/02
CPC分类号： G06F7/78 , G06F5/06 , H04N7/1696
摘要： The invention principally relates to a device and to a method for writing in a storage device of the stack type. The invention relates to the use of stacks (1) of the first-in, first-out (FIFO) type for the unscrambling of television images. In order to be able to write in such a stack (1) starting from a desired address, the procedure begins with writing non-pertinent information in order to increment the stack's internal counter to which there is no access. Then, starting from the desired value of the counter, pertinent information is written. It is possible to rewrite pertinent information over the non-pertinent information placed for example at the start of the stack. The present invention applies in particular to the use of special memories for uses which have not been foreseen by the manufacturer. It applies more particularly to the use of stacks (1) of the first-in, first-out type for the unscrambling of television images.
摘要翻译：本发明主要涉及一种用于在堆叠类型的存储装置中写入的装置和方法。本发明涉及使用先入先出（FIFO）类型的堆栈（1）来解扰乱电视图像。为了能够从所需的地址开始写入这样的堆栈（1），该过程开始于写入不相关信息，以便增加堆栈的内部计数器。然后，从计数器的期望值开始，写入相关信息。可以通过例如在堆栈的开始处放置的非相关信息重写相关信息。本发明特别适用于制造商没有预见的用途的专用存储器。更具体地涉及使用先入先出类型的堆叠（1）来解扰乱电视图像。

12. 发明授权

US5535275A Apparatus and method for producing scrambled digital video signals 失效
标题翻译：用于产生加扰数字视频信号的装置和方法
公开(公告)号：US5535275A
公开(公告)日：1996-07-09
申请号：US263423
申请日：1994-06-21
申请人： Kiminori Sugisaki , Keiji Kanota
发明人： Kiminori Sugisaki , Keiji Kanota
IPC分类号： H04K1/04 , G06F21/10 , H04L9/18 , H04N5/765 , H04N5/913 , H04N5/92 , H04N7/167 , H04N7/169 , H04N9/804 , H04N9/808 , H04N19/467 , H04N19/60 , H04N19/625 , H04N19/65 , H04N19/70 , H04N19/85 , H04N19/88 , H04N21/433 , H04N21/4408 , H04N21/8355 , H04L9/34
CPC分类号： H04N5/913 , H04N9/8047 , H04N2005/91364
摘要： Unauthorized copying of a video signal is prevented by means of a compression encoding circuit that selectively applies scrambling to the encoded signal. The compression encoding circuit is of the type which divides frames of a digital video signal into rectangular data blocks, aggregates a predetermined number of data blocks to form macroblocks, shuffles the macroblocks within the video frame, and performs discrete cosine transform processing block-by-block on the rectangular data blocks making up the shuffled macroblocks. The scrambling may be accomplished by rearranging the order of the rectangular data blocks within each macroblock, or by changing the pattern according to which macroblocks are shuffled in the video frames. The scrambling may also be accomplished by interchanging bits in a component, such as the DC component, of the DCT-processed data, or by setting such data bits to predetermined values. A compression encoding circuit with the above-described scrambling capability may be used in a digital video tape recorder (VTR), and the scrambling capability may be activated in response to a copyright protection signal present in an analog video signal supplied as an input to the digital VTR.
摘要翻译：通过压缩编码电路来防止视频信号的未经授权的复制，该压缩编码电路有选择地对加密信号进行加扰。压缩编码电路是将数字视频信号的帧分割为矩形数据块的类型，聚集预定数量的数据块以形成宏块，对视频帧内的宏块进行混洗，并逐个进行离散余弦变换处理，阻止构成洗牌宏块的矩形数据块。可以通过重新排列每个宏块内的矩形数据块的顺序，或通过根据哪些宏块在视频帧中进行混洗来改变模式来实现加扰。也可以通过将DCT处理的数据的诸如DC分量的分量中的比特进行交换，或者将这些数据比特设置为预定值来实现加扰。具有上述加扰能力的压缩编码电路可以用在数字录像机（VTR）中，并且可以响应于作为输入的模拟视频信号中存在的版权保护信号来激活加扰能力数字VTR。

13. 再颁专利

USRE35078E Method and apparatus for encrypting and decrypting time domain signals 失效
标题翻译：用于加密和解密时域信号的方法和装置
公开(公告)号：USRE35078E
公开(公告)日：1995-10-31
申请号：US137582
申请日：1993-10-15
申请人： John O. Ryan
发明人： John O. Ryan
IPC分类号： G09C1/00 , H04K1/00 , H04L9/08 , H04N7/169 , H04N7/167
CPC分类号： H04N7/1693
摘要： A technique for encrypting and decrypting information signals normally arranged as a succession of lines of active information, with each line having a line timing reference, such as color video information signals. The active video portion is time shifted with respect to the horizontal sync portion of the corresponding line using a predetermined slowly varying time shifting function. The time shifting information is conveyed to the decryption site by encoding the instantaneous value of the time shifting wave form for the beginning of each field in the vertical blanking portion of that field. To provide a reasonable maximum time shifting range, portions of the trailing edge of the active video in the preceding line and portions of the leading edge of the active video in the current line are discarded. During decryption, the original line timing and color burst signals are discarded and new signals are generated which are time displaced from the active video portion by the original amount before encryption.
摘要翻译：一种用于加密和解密信息信号的技术，其通常被布置为一系列活动信息，每行具有线定时参考，诸如彩色视频信息信号。有效视频部分使用预定的缓慢变化的时移功能相对于相应线的水平同步部分进行时移。通过对该场的垂直消隐部分中的每个场的开头的时移波形的瞬时值进行编码，将时移信息传送到解密站点。为了提供合理的最大时移范围，丢弃前一行中的有效视频的后沿的部分和当前行中的有效视频的前沿的部分。在解密期间，丢弃原始行定时和色同步信号，并且生成新的信号，这些信号在加密之前从有效视频部分移位原来的量。

14. 发明授权

US5121204A Apparatus for scrambling side panel information of a wide aspect ratio image signal 失效
标题翻译：用于屏蔽宽屏幕比例图像信号的侧面信息的装置
公开(公告)号：US5121204A
公开(公告)日：1992-06-09
申请号：US604536
申请日：1990-10-29
申请人： Benjamin J. Cila , Joshua L. Koslov , Robert N. Hurst, Jr. , Charles B. Dietrich
发明人： Benjamin J. Cila , Joshua L. Koslov , Robert N. Hurst, Jr. , Charles B. Dietrich
IPC分类号： H04N7/01 , H04N7/081 , H04N7/167 , H04N7/169 , H04N7/26 , H04N11/04 , H04N11/20 , H04N11/24
CPC分类号： H04N11/008 , H04N7/081 , H04N7/167 , H04N7/1696
摘要： In a widescreen television signal processing system, side panel video information is scrambled prior to modulating an auxiliary subcarrier which is ultimately combined with main panel video information. In a preferred embodiment the scrambling process involves rotation of image line information about a pseudorandomly chosen cut-point.
摘要翻译：在宽屏电视信号处理系统中，在调制最终与主面板视频信息相结合的辅助副载波之前对侧面板视频信息进行加扰。在优选实施例中，加扰过程涉及关于伪随机选择的切点的图像线信息的旋转。

15. 发明授权

US5058158A Video scrambling apparatus and method based on space filling curves 失效
标题翻译：基于空间填充曲线的视频屏蔽装置及方法
公开(公告)号：US5058158A
公开(公告)日：1991-10-15
申请号：US495476
申请日：1990-03-19
申请人： Yossi Matias , Adi Shamir
发明人： Yossi Matias , Adi Shamir
IPC分类号： G06F21/10 , H04N7/167 , H04N7/169
CPC分类号： H04N7/1696
摘要： A method of encrypting a video signal employing a pseudorandom Space Filling Curve having a highly irregular scanning pattern for scanning the pixel addresses of a video picture stored in a frame buffer. The method is used with a video scrambler/descrambler device and is characterized by a much higher cryptographic strength than existing techniques, which is not subject to simple correlation attacks by comparing and matching of line portions. In addition, the method features a reduction in the video signal bandwidth for typical pictures.

16. 发明授权

US5034981A Anti-copying video signal processing 失效
标题翻译：防复制视频信号处理
公开(公告)号：US5034981A
公开(公告)日：1991-07-23
申请号：US457928
申请日：1989-12-27
申请人： Eugene Leonard , Bill Perlman , Karoly Budai , William R. Dolson
发明人： Eugene Leonard , Bill Perlman , Karoly Budai , William R. Dolson
IPC分类号： H04N5/91 , G11B27/028 , H04N5/913 , H04N7/169 , H04N9/79
CPC分类号： G11B27/028 , H04N5/913 , H04N7/169 , H04N9/79 , H04N2005/91378 , H04N2005/91385
摘要： Counting circuitry in the vertical synchronizing circuit of a video receiver is prevented from generating vertical control signals at a fixed, standard periodicity when the video signal transmitted to that receiver exhibits a changing field interval which varies above and below that standard period. At least one of the vertical pulses in the vertical period of each field interval as well as plural equalizing pulses in the post equalizing period in that field interval are deleted from the video signal. To minimize perturbations in the video picture displayed from that video signal, the time of occurrence of the first vertical pulse in selected field intervals is shifted.
摘要翻译：当发送到该接收机的视频信号表现出在该标准周期之上和之下变化的变化的场间隔时，防止视频接收机的垂直同步电路中的计数电路以固定的标准周期产生垂直控制信号。每个场间隔的垂直周期中的至少一个垂直脉冲以及该场间隔中的后均衡周期中的多个均衡脉冲从视频信号中删除。为了最小化从该视频信号显示的视频图像中的扰动，所选择的场间隔中的第一垂直脉冲的出现时间被移位。

17. 发明授权

US4945564A Process for the scrambling and descrambling of television images 失效
标题翻译：电视图像加扰和解扰的过程
公开(公告)号：US4945564A
公开(公告)日：1990-07-31
申请号：US293605
申请日：1989-10-05
申请人： Victorion Christian , Guionnet Jacques
发明人： Victorion Christian , Guionnet Jacques
IPC分类号： H04N7/169
CPC分类号： H04N7/1696
摘要： The useful signal of a sampled video line is, at least partially, spliced to two adjacent segments (AB, BC), each of which has at least two states. The splicing point (B) between the two segments is synchronously defined in a pseudo-random manner at transmission and reception. Upon transmission, at each line and in a pseudo-random manner, one of two possible scrambling schemes is selected. The first scheme involves local reversing of the second segment, and the second scheme involves a reversing of the second segment followed by a permutation with the first segment. Upon reception, the processing is the inverse of the processing which occurred at transmission and is applied in order to reintroduce intelligibility to the video signal. That is the locally reversed segments are received and reversed, following the permutation used at transmission. The process applies to a MAC signal.
摘要翻译：至少部分地，采样视频线的有用信号被拼接成两个相邻的段（AB，BC），每个段具有至少两个状态。两个段之间的拼接点（B）在发送和接收时以伪随机的方式被同步地定义。在传输时，在每一行和伪随机方式下，选择两种可能的加扰方案之一。第一方案涉及第二段的局部反转，并且第二方案涉及第二段的反转，随后是与第一段的排列。在接收时，处理是在传输时发生的处理的逆，并且被应用以便重新引入视频信号的可懂度。这是在传输中使用的排列之后，接收和反转的局部反转段。该过程适用于MAC信号。

18. 发明授权

US4757531A Encryption of television signals 失效
标题翻译：加密电视信号
公开(公告)号：US4757531A
公开(公告)日：1988-07-12
申请号：US678543
申请日：1984-11-20
申请人： Nicolas K. Lodge , Arthur G. Mason , Barry A. Flannigan
发明人： Nicolas K. Lodge , Arthur G. Mason , Barry A. Flannigan
IPC分类号： H04N11/00 , H04N7/167 , H04N7/169 , H04N11/08 , H04N11/24
CPC分类号： H04N7/1675 , H04N7/1696
摘要： A method of encrypting a television signal having in each ruster scan line a digital section of information and chrominance and luminance sections of information comprising cutting either or both of the chrominance and luminance sections and rotating the cut sections within a normal line period. If one of the sections is uncut, it may be translated in time with respect to the line period by having one of the rotated cut sections placed before the uncut section and one placed after the uncut section. The cutting point or points are determined by a pseudo random number generator. Receiving apparatus for receiving such an encrypted signal is also disclosed in which a complementary pseudo random number generator is used responsive to receipt of an encryption key to control addressing of a descrambling store in order to reconstitute the original signal.
摘要翻译： PCT No.PCT / GB84 / 00106 Sec。 1984日期1984年11月20日 102（e）1984年11月20日日期PCT 1984年3月28日PCT公布。第WO84 / 04013号公报日期：1984年10月11日。一种加密电视信号的方法，在每个生锈扫描线中具有信息的数字部分和信息的色度和亮度部分，包括切割色度和亮度部分中的一个或两个，并将切割部分在正常线期如果其中一个部分是未切割的，则可以通过使一个旋转切割部分放置在未切割部分之前并且在未切割部分之后放置，可以相对于线周期在时间上翻译。切点或点由伪随机数发生器确定。还公开了用于接收这种加密信号的接收装置，其中响应于接收到加密密钥来使用互补伪随机数发生器来控制解扰存储器的寻址，以便重构原始信号。

19. 发明授权

US4742543A Video transmission system 失效
标题翻译：视频传输系统
公开(公告)号：US4742543A
公开(公告)日：1988-05-03
申请号：US884217
申请日：1986-07-10
申请人： Jeffrey E. Frederiksen
发明人： Jeffrey E. Frederiksen
IPC分类号： H04N7/085 , H04N7/169 , H04N7/167
CPC分类号： H04N7/085 , H04N7/1696
摘要： A subscriber cable television system uses predominantly digital signal processing techniques and has extremely high security and an increased capacity for transmitting program and customer data to individual decoder units. For ease of data handling, two-channel audio, video, and high capacity program and customer data are multiplexed for transmission on the composite video signal. The decoder unit employs a system timing circuit which precisely synchronizes the sample times on the received composite video signal to the chroma burst, regardless of whether the video information is for a color or black-and-white program. An improved time-warp and segment scrambling method is disclosed along with means for suppressing the undesirable effects of discontinuities in the scrambled video signal. The digital audio is transmitted as scrambled most significant bits in low resolution samples and unscrambled least significant bits in a high resolution remainder sample. The system timing circuit has a horizontal sync detector accommodating variable line length such as is provided by some video recording apparatus. The clock to the horizontal counter is selectively phase-reversed in response to early or late horizontal sync so that the timing resolution is twice the clock period. An improved self-adjusting threshold detector and other means are disclosed for detecting a "20 IEEE" suppressed horizontal sync so that the full range of video modulation may be used more effectively. Circuitry is also disclosed for transmitting the customer and program information in a multi-level correlative signalling format in order to more effectively use the band width of the entire television channel.
摘要翻译：订户有线电视系统主要使用数字信号处理技术，并且具有极高的安全性和增加的将节目和客户数据传送到各个解码器单元的能力。为了便于数据处理，双声道音频，视频和高容量程序和客户数据被复用以在复合视频信号上传输。解码器单元使用系统定时电路，其将接收的复合视频信号的采样时间精确地同步到色度脉冲串，而不管视频信息是用于彩色还是黑白程序。公开了改进的时间扭曲和分段加扰方法以及用于抑制加扰视频信号中的不连续性的不期望的影响的装置。数字音频作为低分辨率采样中的加扰最高有效位并在高分辨率剩余采样中被发送为未加扰的最低有效位。系统定时电路具有容纳可变线路长度的水平同步信号检测器，例如由一些视频记录设备提供。响应于早期或晚期水平同步，水平计数器的时钟被选择性地相位反转，使得定时分辨率是时钟周期的两倍。公开了一种改进的自调整阈值检测器和其他用于检测“20 IEEE”抑制水平同步的装置，使得可以更有效地使用视频调制的全范围。还公开了用于以多级相关信令格式发送客户和节目信息的电路，以便更有效地使用整个电视频道的频带宽度。

20. 发明授权

US4731837A Method and device for secure transmission and of television pictures 失效
标题翻译：用于安全传输和电视图像的方法和装置
公开(公告)号：US4731837A
公开(公告)日：1988-03-15
申请号：US909617
申请日：1986-09-22
申请人： Christian J. F. Gautier
发明人： Christian J. F. Gautier
IPC分类号： H04N7/169 , H04N7/167
CPC分类号： H04N7/1696
摘要： A process for scrambling and unscrambling the image part of a sampled MAC ne video signal excluding the synchronization signal begins by dividing at two dividing points the MAC luminance signal and the chrominance signal to form two pairs of segments that are adjacent in each pair. For both transmission and reception each one of two dividing points between the two segments is synchronously defined in a pseudo-random manner to form a pair slightly overlapping in the neighborhood of the pertinent dividing point. The segments are processed in each pair as a whole in order to scramble prior to transmission and again to unscramble upon reception so as to restore the initial video signal.
摘要翻译：除了同步信号之外的对采样的MAC线路视频信号的图像部分进行加扰和解扰的处理开始于在两个分割点处划分MAC亮度信号和色度信号以形成两对相邻的两对分段。对于发送和接收两者，两个段之间的两个分割点中的每一个以伪随机方式同步地定义，以形成在相关分割点附近稍微重叠的对。这些段在整个对中被处理，以便在发送之前进行加扰，并且在接收时再次解扰，以恢复初始视频信号。

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