公开(公告)号：US4689673A

公开(公告)日：1987-08-25

申请号：US872780

申请日：1986-06-10

申请人： Junichi Ohki ,  Akihiro Furukawa

发明人： Junichi Ohki ,  Akihiro Furukawa

IPC分类号： G06T7/20 ,  H04N7/26 ,  H04N7/36 ,  H04N7/137

CPC分类号： G06T7/2013 ,  H04N19/142 ,  H04N19/179 ,  H04N19/503 ,  H04N19/51 ,  H04N19/87 ,  G06T2207/10016

摘要： In a movement compensation predictive encoder, a vector detector (19) is supplied with a moving picture signal and produces a movement vector signal representative of at least one movement vector for each region of each frame. A picture analyzer (16) serves as a variation detector for detecting a variation in each region to produce a variation signal when the variation exceeds a predetermined threshold in one of the regions. The variation signal is used in giving a predetermined value, such as zero, to the above-mentioned at least one movement vector for that one of the regions. In place of the variation detector, a scene change detector can likewise be used to produce a scene change signal for giving a predetermined value to the movement vectors for a frame for which a scene change is detected. The scene change detector is preferably operable on a summation for each frame of results of evaluation for movement compensated prediction errors rather than, as in prior art, for differences between picture elements of two consecutive frames.

摘要翻译： 在运动补偿预测编码器中，矢量检测器（19）被提供有运动图像信号，并产生代表每帧的每个区域的至少一个运动矢量的运动矢量信号。 图像分析器（16）用作变化检测器，用于当区域中的一个区域中的变化超过预定阈值时，检测每个区域的变化以产生变化信号。 变化信号用于向上述至少一个区域的一个运动矢量给出诸如零的预定值。 同样可以使用场景改变检测器来产生场景改变信号，以便为检测到场景变化的帧的运动矢量给出预定值。 优选地，对于运动补偿预测误差的评估结果的结果，场景变化检测器可操作，而不是像现有技术中那样用于两个连续帧的像素之间的差异。

公开(公告)号：US4689672A

公开(公告)日：1987-08-25

申请号：US907272

申请日：1986-09-15

申请人： Akihiro Furukawa ,  Junichi Ohki

发明人： Akihiro Furukawa ,  Junichi Ohki

IPC分类号： G06T9/00 ,  H04N7/26 ,  H04N7/32 ,  H04N7/36 ,  H04N7/137

CPC分类号： H04N19/87 ,  H04N19/142 ,  H04N19/152 ,  H04N19/179 ,  H04N19/503 ,  H04N19/51 ,  H04N19/50

摘要： On subjecting a digital video signal representative of successive pictures to predictive coding by using correlation between two successive pictures, an estimated result is derived from the digital video signal to represent a degree of correlation between a current picture and a previous picture and is increased with a reduction of the degree. When the estimated result becomes greater than a predetermined threshold value as a result of a drastical change, such as a scene change, from the previous picture to the current picture, a control signal is produced. Furthermore, the digital video signal is separated into a preceding signal part ending at the previous picture and a succeeding part which begins at the current picture. The control signal controls the predictive coding so that the succeeding part be coded with an area of predictive coding of each picture gradually widened with time. The control signal may be supplied to a predictive coder. Alternatively, the control signal may be used to control a frame memory for supplying the digital video signal to the predictive coder with the area gradually widened for the succeeding part. A plurality of threshold levels may be used collectively as the predetermined threshold. The threshold levels are for use in selecting a rate of gradually widening the area.

摘要翻译： 在使用表示连续画面的数字视频信号通过使用两个连续画面之间的相关性进行预测编码时，从数字视频信号导出估计结果，以表示当前画面和先前画面之间的相关度，并且用 减少学位。 当从前一图像到当前图像的诸如场景变化的急剧变化的结果，当估计结果变得大于预定阈值时，产生控制信号。 此外，数字视频信号被分成在前一图像结束的先前信号部分和从当前图像开始的后续部分。 控制信号控制预测编码，使得随着时间逐渐变宽的每个图像的预测编码区域对后续部分进行编码。 控制信号可以被提供给预测编码器。 或者，控制信号可以用于控制用于将数字视频信号提供给预测编码器的帧存储器，其中后续部分的区域逐渐变宽。 可以将多个阈值水平集中地用作预定阈值。 阈值水平用于选择逐渐扩大区域的速率。

公开(公告)号：US4689671A

公开(公告)日：1987-08-25

申请号：US878753

申请日：1986-06-26

申请人： Junichi Ohki ,  Akihiro Furukawa

发明人： Junichi Ohki ,  Akihiro Furukawa

IPC分类号： H04N7/26 ,  H04N7/36 ,  H04N7/50 ,  H04N7/13

CPC分类号： H04N19/61 ,  H04N19/51 ,  H04N19/619 ,  H04N19/107

摘要： A coding apparatus for a moving object image input signal such as a television signal detects an uncovered background area appearing upon movement of a moving object in the moving object image input signal and encodes an image signal corresponding to the uncovered background area according to intraframe correlation instead of interframe correlation. The coding apparatus includes a noise reduction circuit for decreasing a noise reduction level for the signal corresponding to the uncovered background area.

摘要翻译： 用于诸如电视信号的运动对象图像输入信号的编码装置检测移动物体图像输入信号中运动物体移动时出现的未覆盖的背景区域，并根据帧内相关性对与未覆盖的背景区域相对应的图像信号进行编码 的帧间相关性。 编码装置包括用于降低与未覆盖的背景区域相对应的信号的噪声降低等级的降噪电路。

公开(公告)号：US4683494A

公开(公告)日：1987-07-28

申请号：US765357

申请日：1985-08-13

申请人： Akihiro Furukawa ,  Junichi Ohki

发明人： Akihiro Furukawa ,  Junichi Ohki

IPC分类号： G06T9/00 ,  H04N7/26 ,  H04N7/32 ,  H04N7/36 ,  H04N7/12

CPC分类号： H04N19/152 ,  H04N19/112 ,  H04N19/124 ,  H04N19/503 ,  H04N19/50

摘要： A video coding apparatus having a quantizer that is controlled by a quantization control signal. Stationary picture elements are coded such that quantization is coarse, which reduces the output information for the picture elements in the stationary image region and increases compression of the signal. The apparatus may include a calculation system for calculating a distance of a stationary picture element from the moving image region. The quantization is performed more coarsely as the calculated distance becomes longer. The quantizer may also be controlled such that coarse quantization is performed over a plurality of frames for the picture elements in the stationary region, and at a predetermined interval finer quantization is performed with respect to the same stationary picture elements, for further improving the picture. Transition of a picture element from the stationary region to the moving region may be detected, and the quantizer may be controlled to perform fine quantization when the transition is detected, and thereafter perform coarse quantization.

摘要翻译： 具有由量化控制信号控制的量化器的视频编码装置。 编码固定图像元素使得量化是粗糙的，这减少了静止图像区域中的图像元素的输出信息并增加了信号的压缩。 该设备可以包括用于计算静止图像元素与运动图像区域的距离的计算系统。 随着计算出的距离变长，量化被更粗略地执行。 也可以控制量化器，使得在静止区域中的图像元素的多个帧上执行粗略量化，并且在预定间隔，相对于相同的固定图像元素执行更精细的量化，以进一步改善图像。 可以检测到图像元素从静止区域到移动区域的转换，并且可以控制量化器以在检测到转换时进行精细量化，然后执行粗略量化。

公开(公告)号：US4996904A

公开(公告)日：1991-03-05

申请号：US449261

申请日：1989-12-12

申请人： Junichi Ohki ,  Atushi Satoh

发明人： Junichi Ohki ,  Atushi Satoh

IPC分类号： B60T13/563 ,  B60T13/569

CPC分类号： B60T13/569 ,  B60T13/563

摘要： In the negative pressure booster equipment 1 according to the present invention, a groove 27 is provided on the inner peripheral beads 14a and 16a of the diaphragms 14 and 16, fixed on the valve body 8 and forming the power pistons in order to communicate the variable pressure chambers 5b and 7b divided by the diaphragms 14 and 16 with the passages 26 and 28 corresponding to the variable pressure chambers 5b and 7b. Accordingly, the air passages are opened to the variable pressure chambers 5b and 7b through the groove 27 formed on the beads 14a and 16a of the diaphragms 14 and 16. According to this invention, therefore, there is no need to provide wide gap between the fixed portion of the beads and the center plate in order to open the air passages to the variable pressure chambers. This makes it possible to shorten overall length of the negative pressure booster equipment 1.

摘要翻译： 在根据本发明的负压增压设备1中，在隔膜14和16的内周边胎圈14a和16a上设置一个槽27，该槽27固定在阀体8上并形成动力活塞，以便使变量 压力室5b和7b由隔膜14和16分开，通道26和28对应于可变压力室5b和7b。 因此，空气通道通过形成在隔膜14和16的凸缘14a和16a上的槽27向可变压力室5b和7b打开。因此，根据本发明，不需要在 珠的固定部分和中心板，以将空气通道打开到可变压力室。 这使得可以缩短负压增压设备1的总长度。

公开(公告)号：US4942476A

公开(公告)日：1990-07-17

申请号：US189138

申请日：1988-05-02

申请人： Toshio Koga ,  Junichi Ohki ,  Mutsumi Ohta ,  Hideto Kunihiro

发明人： Toshio Koga ,  Junichi Ohki ,  Mutsumi Ohta ,  Hideto Kunihiro

IPC分类号： H04N5/92 ,  G11B20/10 ,  H04N5/85 ,  H04N5/926

CPC分类号： H04N5/9262 ,  H04N5/85

摘要： In a recording system, a sequence of image signals obtained from a sequence of images are used to generate and record a sequence of recordable signals on a read only memory. Efficient coding of the received sequence of image signals is carried out through the use of a given parameter which is adaptively and dynamically changed, preferably manually, through a parameter controller acting as the interactive device. The image signals are repeatedly subjected to the efficient coding process. The process uses a sequence of predictive signals to produce coded signals. The predictive signals are displayed on a monitor display device to be monitored by an operator. The operator changes the attributes of the parameter until an optimum image is obtained. The optimum parameter is stored on a magnetic tape. The image signals subjected to the efficient coding enable the production of a sequence of coded image signals which are recorded on the read only memory in synchronism with the optimum parameter, after the optimum image has been obtained.

摘要翻译： 在响应于一系列图像信号以在主图像记录介质上记录一系列记录信号的记录系统中，通过使用通过参数控制器自适应地从一个到另一个改变的参数来执行有效的编码 35）作为人机交互设备。 参考一系列预测值信号V（i），将图像信号重复地提供给记录系统以进行有效编码。 预测值信号显示在监视器显示装置（37）上，由操作者监视。 操作人员可以通过使用最佳参数，观看显示设备，将参数从一个改变到另一个直到显示最佳图像。 最佳参数在磁带（36）上发送。 在获得最佳图像之后，将图像信号经受有效编码成与记录在主图像记录介质上的编码图像信号序列同步的最佳参数。

公开(公告)号：US4787292A

公开(公告)日：1988-11-29

申请号：US97803

申请日：1987-09-16

申请人： Yasuo Tsuyuki ,  Haruo Suzuki ,  Hidefumi Inoue ,  Junichi Ohki

发明人： Yasuo Tsuyuki ,  Haruo Suzuki ,  Hidefumi Inoue ,  Junichi Ohki

IPC分类号： B60T13/57 ,  F15B9/10

CPC分类号： B60T13/57

摘要： The invention relates to a locking arrangement for a key member used in a brake booster. A key member includes an arcuate portion which surrounds substantially one-half the perimeter of a valve body, and engaging recesses are formed at the opposite ends of the arcuate portion on the inner side. A retainer surrounds substantially one-half the perimeter of the valve body at a location opposite to the arcuate portion of the key member. The opposite ends of the retainer are formed with engaging pawls on the outer side for engaging with the engaging recesses under the resilience of the retainer. Accordingly, by merely assembling the key member and the retainer with the valve body, the engaging pawls of the retainer can be automatically engaged with the engaging recesses in the key member, thereby preventing the withdrawal of the retainer and the key member from the valve body.

摘要翻译： 本发明涉及一种用于制动助力器中的钥匙构件的锁定装置。 钥匙构件包括围绕阀体的大致一半的周边的弓形部分，并且在内侧的弓形部分的相对端处形成接合凹部。 在与键构件的弓形部分相对的位置处，保持器围绕阀体的周边大致为一半。 保持器的相对端在外侧上形成有接合爪，用于在保持器的弹性下与接合凹部接合。 因此，通过仅将键构件和保持器与阀体组合，保持器的接合爪能够自动地与键构件中的接合凹槽接合，从而防止保持器和键构件从阀体抽出 。

公开(公告)号：US5483534A

公开(公告)日：1996-01-09

申请号：US68171

申请日：1993-05-28

申请人： Junichi Ohki ,  Toshio Koga

发明人： Junichi Ohki ,  Toshio Koga

IPC分类号： H04B14/04 ,  H04N7/08 ,  H04N7/081 ,  H04N7/58 ,  H04N19/00 ,  H04N19/115 ,  H04N19/15 ,  H04N19/166 ,  H04N19/46 ,  H04N19/70 ,  H04N7/12

CPC分类号： H04N21/2365 ,  H04N21/4347

摘要： In a transmitting system, a first multiplexer multiplexes first through M-th encoded digital video signals from encoders to produce a primary multiplex signal comprising cells which have channel codes, address codes, and cell data, where M represents an integer greater than two. Each of the cell data represents a part of one of the encoded digital video signals. Each of the channel codes indicates one of the encoded digital video signals. Each of the address codes indicates a position of one of the cell datum. A first demultiplexer demultiplexes the primary multiplex signal to produce first through N-th primary demultiplex signals, where N represents an integer which is less than M and greater than one. A second multiplexer multiplexes the first through the N-th primary demultiplex signals from the first demultiplexer through first through N-th transmitting paths to produce a secondary multiplex signal. A second demultiplexer demultiplexes the secondary multiplex signal datum in response to the channel codes and the address codes to produce the first through the M-th encoded digital video signals.

摘要翻译： 在发射系统中，第一多路复用器多路复用来自编码器的第一至第M编码数字视频信号，以产生包括具有信道码，地址码和小区数据的小区的主复用信号，其中M表示大于2的整数。 每个单元数据表示编码的数字视频信号之一的一部分。 每个信道码表示编码的数字视频信号之一。 每个地址码指示单元格基准之一的位置。 第一解复用器解复用主多路复用信号以产生第一至第N主要多路分解信号，其中N表示小于M且大于1的整数。 第二复用器从第一多路分解器通过第一至第N传输路径多路复用第一至第N主要多路复用信号以产生辅助复用信号。 第二解复用器响应于信道码和地址码来解复用辅助复用信号数据，以产生第一到第M个编码的数字视频信号。

公开(公告)号：US4951550A

公开(公告)日：1990-08-28

申请号：US263642

申请日：1988-10-27

申请人： Junichi Ohki ,  Shintaro Uyama

发明人： Junichi Ohki ,  Shintaro Uyama

IPC分类号： B60T13/57

CPC分类号： B60T13/57 ,  Y10T403/32901 ,  Y10T403/60 ,  Y10T74/2142

摘要： A brake booster is disclosed which reduces an idle stroke of an input shaft. A key member which is mechanically coupled to a valve plunger which forms part of a valve mechanism is provided with an elastic member so that when the brake booster is inoperative, the elastic member on the key member abuts against a shell and a valve body, respectively, thereby limiting a retracting movement of the valve body. Under this condition, a retracting movement of the key member is allowed by an elastic deformation of the elastic member if the input shaft is pulled rearward to cause a retracting movement of the valve plunger and the key member.

摘要翻译： 公开了一种减小输入轴的空转行程的制动助力器。 机械地连接到形成阀机构的一部分的阀柱塞的键构件设置有弹性构件，使得当制动助力器不起作用时，键构件上的弹性构件分别抵靠壳体和阀体 从而限制阀体的回缩运动。 在这种情况下，如果输入轴向后拉动，则弹性构件的弹性变形就允许键构件的回缩运动，从而导致阀柱塞和键构件的缩回运动。

公开(公告)号：US4851906A

公开(公告)日：1989-07-25

申请号：US116061

申请日：1987-10-30

申请人： Toshio Koga ,  Junichi Ohki

发明人： Toshio Koga ,  Junichi Ohki

IPC分类号： G06T9/00 ,  H04N7/28 ,  H04N7/36

CPC分类号： H04N19/94 ,  H04N19/503

摘要： In an image communication system, an input image sequence is converted into a block-formatted sequence. A data compression signal indicative of the amount of moving blocks in the block-formatted sequence is generated to individually control a plurality of vector quantizers each having a particular frequency band and a memory containing output vectors. The output vectors of each of the vector quantizers is representative of inverse orthogonal transform of a code table of optimum quantized vectors in the particular frequency band, the optimum quantized vectors being orthogonal transform of interframe differential training image sequences. The output vectors is retrievable from the memory as a function of an interframe differential image sequence, or prediction error. Each vector quantizer selects one of the vectors retrieved from the memory which is nearest to the value of the interframe differential image sequence and generates an index signal representative of the selected vector, which index signal is encoded and transmitted to a destination. The outputs of the vector quantizers are processed by inverse vector quantizers to generate a predictive image sequence. The prediction error is detected as a difference between the predictive image sequence and the block-formatted sequence.

摘要翻译： 在图像通信系统中，输入图像序列被转换成块格式的序列。 产生指示块格式化序列中的移动块的量的数据压缩信号，以单独控制每个具有特定频带的多个矢量量化器和包含输出向量的存储器。 每个矢量量化器的输出矢量表示特定频带中最佳量化矢量的码表的逆正交变换，最佳量化矢量是帧间差分训练图像序列的正交变换。 作为帧间差分图像序列或预测误差的函数，从存储器检索输出向量。 每个矢量量化器选择从存储器检索的最接近于帧间差分图像序列的值的一个矢量，并产生代表所选向量的索引信号，该索引信号被编码并发送到目的地。 矢量量化器的输出由逆矢量量化器处理，以产生预测图像序列。 预测误差被检测为预测图像序列与块格式化序列之间的差异。