Digital video recording system
    1.
    发明授权
    Digital video recording system 有权
    数字录像系统

    公开(公告)号:US06317152B1

    公开(公告)日:2001-11-13

    申请号:US09356129

    申请日:1999-07-17

    Abstract: A digital video recording system (10) includes a video camera (12) directed at a scene of interest to continuously view the scene and generate video images (F) of the scene at a predetermined frame rate. A frame grabber (16) converts the images to digital signal (vd). A processor (14) processes the signals, comparing the video image represented by a digital signal with a previously established reference (Fr) of the scene to determine if changes have occurred. The processor has a memory (20) in which contents of each digital signal are stored, together with the time and date information as to when the image was acquired. A video playback capability (30) allows the memory to be accessed to retrieve the contents of digital signals so video images produced by the camera can be recreated. The playback system enables the memory to be accessed at any desired date and time location so an image of interest can be reviewed without having to scan video images in a date/time sequence. Accessing the memory is done without interrupting the processor's processing of digital signals for currently acquired video images.

    Abstract translation: 数字视频记录系统(10)包括指向感兴趣的场景的摄像机(12),以连续观看场景并以预定的帧速率产生场景的视频图像(F)。 帧捕获器(16)将图像转换为数字信号(vd)。 处理器(14)处理信号,将由数字信号表示的视频图像与场景的先前建立的参考(Fr)进行比较,以确定是否发生改变。 处理器具有存储每个数字信号的内容的存储器(20),以及关于何时获取图像的时间和日期信息。 视频播放能力(30)允许访问存储器以检索数字信号的内容,从而可以重新创建由相机产生的视频图像。 播放系统使得能够在任何期望的日期和时间位置访问存储器,从而可以检查感兴趣的图像而不必以日期/时间顺序扫描视频图像。 在不中断处理器对当前获取的视频图像的数字信号的处理的情况下,进行存储器的完成。

    Site control unit for video security system
    2.
    发明授权
    Site control unit for video security system 失效
    视频安全系统现场控制单元

    公开(公告)号:US06097429A

    公开(公告)日:2000-08-01

    申请号:US904510

    申请日:1997-08-01

    Abstract: A site control unit (12) located at a premises (F) processing video images obtained from a plurality of cameras (22) located about the premises and relaying the presence of a real intrusion to a central station (CS). The site control unit has an image acquisition module (24) receiving video images from the cameras. An image processor (30) processes the images to eliminate possible causes of false alarms of an intrusion and reliably detecting actual intrusions. The processor includes video masking (32) to filter known motion present within a scene, detection (34) detecting movement in unmasked portions of the scene, and recognition (36) classifying the cause of the movement. An indication of an intrusion is given only if the cause is one of a class of predetermined causes representing an intruder on the premises, or an unknown cause. A video recorder (38) records images of the actual intrusion and supplies recorded images to a security system operator (O) who informs authorities of in intrusion. The video recorder produces snapshots (X1-Xn) of a scene viewed by the camera detecting the intrusion detected, authenticates (42) the snapshots, and transmits (46) the snapshots for viewing by the operator.

    Abstract translation: 位于处所(F)处的位置控制单元(12)处理从位于该房屋周围的多个照相机(22)获得的视频图像,并将真实入侵的存在转发给中心站(CS)。 站点控制单元具有从摄像机接收视频图像的图像获取模块(24)。 图像处理器(30)处理图像以消除入侵的虚假警报的可能原因并可靠地检测实际入侵。 所述处理器包括视频屏蔽(32),以过滤场景中存在的已知运动,检测(34)检测所述场景的未屏蔽部分中的移动,以及识别(36)分类所述运动的原因。 仅当原因是表示在场所内的入侵者的一类预定原因或未知原因时才给出入侵的指示。 视频记录器(38)记录实际入侵的图像并将记录的图像提供给安全系统操作员(O),该安全系统操作员(O)在入侵时通知当局。 视频记录器产生由相机检测到的入侵检测的场景的快照(X1-Xn),验证(42)快照,并发送(46)快照以供操作者查看。

    Rejection of light intrusion false alarms in a video security system
    3.
    发明授权
    Rejection of light intrusion false alarms in a video security system 失效
    在视频安全系统中拒绝入侵虚假警报

    公开(公告)号:US5937092A

    公开(公告)日:1999-08-10

    申请号:US772595

    申请日:1996-12-23

    CPC classification number: G08B13/19602 G08B13/19606 H04N7/18

    Abstract: This invention is a video security system (10) and a method for visually monitoring a scene and detecting motion of an intruder within the scene. A camera (C) continually views the scene and produces a representative signal. A processor (12) processes the signal and produces an image (f2) represented by the signal. This image is compared with a similar image (f1) of the scene from a previous point in time. Segments of the later image which differ from segments of the earlier image are identified. A discriminator (14) evaluates these segments to determine if the differences result simply from lighting changes, or the movement of an intruder within the scene as indicated by surface differences between segments of the respective differences. If caused by an intruder, an appropriate indication is provided. An algorithm is employed by which differences from one image to another caused by global or local lighting changes effects are identified so as not to produce false alarms.

    Abstract translation: 本发明是视频安全系统(10)和用于视觉监视场景并检测入场者在场景内的运动的方法。 相机(C)连续观看场景并产生代表信号。 处理器(12)处理信号并产生由该信号表示的图像(f2)。 该图像与先前时间点的场景的类似图像(f1)进行比较。 识别与较早图像的片段不同的稍后图像的片段。 鉴别器(14)评估这些片段,以确定差异是否仅仅是由照明变化产生的,或入射者在场景内的移动,如由相应差异的片段之间的表面差异所指示的。 如果由入侵者造成,则提供适当的指示。 采用一种算法,通过识别由全局或局部照明变化影响引起的从一个图像到另一个图像的差异,以便不产生假警报。

    Laser vibrometer identification friend-or-foe (IFF) system
    4.
    发明授权
    Laser vibrometer identification friend-or-foe (IFF) system 失效
    激光测振仪识别朋友或者对手(IFF)系统

    公开(公告)号:US5434668A

    公开(公告)日:1995-07-18

    申请号:US861515

    申请日:1992-04-01

    Abstract: A friend-or-foe (IFF) identification system (10) comprises a laser generator (12) for generating and transmitting a laser beam (B). A beam splitter (16) divides the laser beam into two beams. One of the beams (B1) is directed along a reference path (P). This beam is reflected back along the path by a mirror (24) positioned at the end of the path. The other laser beam (B2) is directed at an object (T) to be identified as a friend or foe. This second beam reflects off the object and the return, reflected beam is detected. The reflected beam includes a vibration signature of the object under investigation. The return beam and reference beam are processed together to correct the vibration signature of the object for arty distortions. This allows an accurate target signature to be obtained. Next, the target signature is compared against other signatures. The results of the comparison provide the IFF identification.

    Abstract translation: 朋友对手(IFF)识别系统(10)包括用于产生和传送激光束(B)的激光发生器(12)。 分束器(16)将激光束分成两束。 梁(B1)中的一个沿着参考路径(P)被引导。 该光束通过位于路径末端处的反射镜(24)沿着路径反射回来。 另一个激光束(B2)被引导到物体(T)以被识别为朋友或敌人。 该第二光束从物体反射并返回,检测到反射光束。 反射光束包括被调查物体的振动特征。 一起处理返回光束和参考光束,以校正物体的振动特征以进行形状失真。 这允许获得准确的目标签名。 接下来,将目标签名与其他签名进行比较。 比较结果提供了IFF识别。

    Multiple designation missile system
    5.
    发明授权
    Multiple designation missile system 失效
    多指标导弹系统

    公开(公告)号:US5273236A

    公开(公告)日:1993-12-28

    申请号:US984476

    申请日:1992-12-02

    CPC classification number: F41G7/2233 F41G3/145 F41G7/226 F41G7/2293 F41G9/002

    Abstract: Apparatus (10) is provided for designating a plurality of objects (E1-E3) within a field of view (FOV) and for thereafter simultaneously tracking each of the objects. A field of view is first defined in which one or more objects may be located. A laser beam generator (12) generates a laser beam (B) and directs it into the field of view. A beam steering mechanism (14) steers the laser beam throughout the field of view for it to strike each of the objects appearing therein. A coder unit (22) generates a code uniquely designating each object. A multiple target tracker (20) thereafter simultaneously tracks each separate object. The tracker controls the steering mechanism to sequentially steer the laser beam to each designated object. The laser, via the steering mechanism, illuminates all, or one or more, of the desginated, tracked targets within the field of view.

    Abstract translation: 设备(10)用于在视场(FOV)中指定多个对象(E1-E3),并且此后同时跟踪每个对象。 首先定义视野,其中可以定位一个或多个对象。 激光束发生器(12)产生激光束(B)并将其引导到视野中。 光束转向机构(14)在整个视野中引导激光束,以使其撞击出现在其中的每个物体。 编码器单元(22)生成唯一指定每个对象的代码。 多个目标跟踪器(20)此后同时跟踪每个单独的对象。 跟踪器控制转向机构以顺序地将激光束转向每个指定的对象。 激光器通过转向机构照亮视野内的所有或一个或多个处理过的目标物体。

    Hardware-in-the-loop tow missile system simulator
    6.
    发明授权
    Hardware-in-the-loop tow missile system simulator 失效
    五金在线导弹系统模拟器

    公开(公告)号:US5224860A

    公开(公告)日:1993-07-06

    申请号:US662936

    申请日:1991-03-01

    CPC classification number: F41G7/006

    Abstract: A "hardware-in-the-loop" simulator (10) for training people in the use of a missile system to teach target acquisition, missile launch, and missile guidance under simulated battlefield conditions. A battlefield environment (E) including at least one target (T) movable therewithin is created by a simulation module (12). Missile system hardware (H) including the missile acquisition, tracking, and guidance portions is provided. An interface module (20) converts signals produced by the simulating module to an infrared image acceptable by the hardware. The resultant image represents a field-of-view (FOV), including the target, within the battlefield environment. An image module (32) produces a dynamic image representative of the missile's position in the field-of-view. This image is observable by the hardware which utilizes it to determine the position of the missile relative to the target. The hardware also determines if a missile guidance signal is to be sent to the missile to guide it to the target. If so, the interface module is responsive to the guidance signal to simulate, in real-time, the response of the missile to the guidance signal.

    Abstract translation: 一个“硬件在环”模拟器(10),用于在模拟战场条件下训练人们使用导弹系统来教导目标获取,导弹发射和导弹指导。 包括在其中移动的至少一个目标(T)的战场环境(E)由模拟模块(12)创建。 提供了包括导弹获取,跟踪和引导部分的导弹系统硬件(H)。 接口模块(20)将由模拟模块产生的信号转换为硬件可接受的红外图像。 所得到的图像在战场环境中表示包括目标的视场(FOV)。 图像模块(32)产生代表导视体在视场中的位置的动态图像。 该图像可以由硬件来观察,该硬件利用它来确定导弹相对于目标的位置。 硬件还确定是否将导弹指导信号发送到导弹以将其引导到目标。 如果是这样,接口模块响应于引导信号来实时模拟导弹对引导信号的响应。

    Missile tracking, guidance and control apparatus
    7.
    发明授权
    Missile tracking, guidance and control apparatus 失效
    导弹跟踪,指导和控制装置

    公开(公告)号:US5062586A

    公开(公告)日:1991-11-05

    申请号:US524495

    申请日:1990-05-17

    CPC classification number: F41G7/303 F41G7/26 F41G7/32

    Abstract: Apparatus (10) for acquiring and tracking a missile (M), and guiding it to a target (T). Beacons (18, 19) are carried on the missile to provide an indication of its location in a field of view. One beacon (18) is a xenon beacon which emits energy in a short wave-length portion of the light spectrum. The other beacon (19) is a thermal source which emits infrared radiation in a longer wave-length portion of the spectrum. A sight unit (20) includes both a xenon beacon detector and a forward looking infrared receiver (FLIR). The FLIR provides two independent channels (A, B) of video. An electrical signal developed within the sight unit is separately processed on both of the channels. One channel is used to develop a video display for an operator for target acquisition and tracking. The other channel is used for missile tracking and clutter and countermeasure (CM) rejection. A tracking unit (40) processes the signal to determine missile location relative to the target; and, if corrections to the missile freight path are necessary, a missile control unit (56) transmits them to the missile over wires (W). If two or more objects (M, D1, D2) are located in the field of view, a module (88) of the tracking unit undertakes a "segmentation" process to differentiate and characterize the objects to determine which object is the missile and which is not.

    Abstract translation: 用于获取和跟踪导弹(M)并将其引导到目标(T)的装置(10)。 信标(18,19)在导弹上运载,以便在视野中提供其位置的指示。 一个信标(18)是在光谱的短波长部分中发射能量的氙信标。 另一个信标(19)是在光谱的较长波长部分发射红外辐射的热源。 视觉单元(20)包括氙信标检测器和前视红外接收器(FLIR)。 FLIR提供两个独立的视频通道(A,B)。 在两个通道上分别处理在瞄准单元内形成的电信号。 一个通道用于开发用于操作者的视频显示器以进行目标采集和跟踪。 另一个通道用于导弹跟踪和杂波和对策(CM)的拒绝。 跟踪单元(40)处理信号以确定相对于目标的导弹位置; 并且如果需要对导弹运输路径进行修正,则导弹控制单元(56)将它们传输到导线(W)上。 如果两个或多个对象(M,D1,D2)位于视场中,跟踪单元的模块(88)进行“分割”过程以区分和表征对象以确定哪个对象是导弹,以及哪个 不是。

    Low false alarm rate detection for a video image processing based
security alarm system
    8.
    发明授权
    Low false alarm rate detection for a video image processing based security alarm system 失效
    基于视频图像处理的安全报警系统的低误报率检测

    公开(公告)号:US5956424A

    公开(公告)日:1999-09-21

    申请号:US772731

    申请日:1996-12-23

    Abstract: Apparatus (10) and a method for visually monitoring a scene and detecting motion of an intruder within the scene. A camera (C) continually views the scene and produces a representative signal. A processor (12) processes the signal and produces an image (f2) represented by the signal. This image is compared with a similar image (f1) of the scene from a previous point in time. Segments of the later image which differ from segments of the earlier image are identified. A discriminator (14) evaluates these segments to determine if the differences result simply from lighting changes, or the movement of an intruder within the scene. If caused by an intruder, an appropriate indication is provided. An algorithm is employed by which differences from one image to another caused by lighting changes, the effects of motion of objects established within the scene, noise, and aliasing effects are identified so as not to produce false alarms. Those remaining segments are further evaluated to determine if there is an intruder present within the scene.

    Abstract translation: 装置(10)和用于视觉监视场景并检测入场者在场景内的运动的方法。 相机(C)连续观看场景并产生代表信号。 处理器(12)处理信号并产生由该信号表示的图像(f2)。 该图像与先前时间点的场景的类似图像(f1)进行比较。 识别与较早图像的片段不同的稍后图像的片段。 鉴别器(14)评估这些段,以确定差异是仅仅来自于照明变化或入侵者在场景内的移动。 如果由入侵者造成,则提供适当的指示。 采用一种算法,通过这些算法,通过照明改变引起的一个图像到另一个图像的差异,识别场景内建立的对象的运动的影响,噪声和混叠效应,以便不产生假警报。 进一步评估剩余部分,以确定场景中是否存在入侵者。

    Digital video recording system
    9.
    发明授权
    Digital video recording system 有权
    数字录像系统

    公开(公告)号:US07116353B2

    公开(公告)日:2006-10-03

    申请号:US09808326

    申请日:2001-03-14

    Abstract: A digital video recording system (10) includes a video camera (12) directed at a scene of interest to continuously view the scene and generate video images (F) of the scene. An image processor (14) is configured to compare the video image (F) with a previously established reference image (Fr) of the scene to determine if changes have occurred. The image processor includes a memory (20) in which portions of video images (F) are stored, together with the time and date information as to when the image was acquired. A video playback capability (30) allows the memory to be accessed to retrieve the portions of the video images for image reconstruction. The playback system enables the memory to be accessed at any desired date and time location so an image of interest can be reconstructed without having to scan stored video images in a date/time sequence. Accessing the memory is done without interrupting the image processor's processing of currently acquired video images.

    Abstract translation: 数字视频记录系统(10)包括指向感兴趣的场景的摄像机(12),以连续观看场景并产生场景的视频图像(F)。 图像处理器(14)被配置为将视频图像(F)与先前建立的场景的参考图像(Fr)进行比较,以确定是否已经发生改变。 图像处理器包括其中存储有视频图像(F)的部分的存储器(20)以及关于何时获取图像的时间和日期信息。 视频播放能力(30)允许访问存储器以检索用于图像重建的视频图像的部分。 播放系统使得能够在任何期望的日期和时间位置访问存储器,从而可以重建感兴趣的图像,而不必以日期/时间顺序扫描存储的视频图像。 在不中断图像处理器对当前获取的视频图像的处理的情况下,进行存储器的完成。

    Authentication algorithms for video images
    10.
    发明授权
    Authentication algorithms for video images 有权
    视频图像的认证算法

    公开(公告)号:US06418223B1

    公开(公告)日:2002-07-09

    申请号:US09244911

    申请日:1999-02-04

    Abstract: A method of authenticating a video image created by a camera (V) or similar video device. The image is formed into a first 2-dimensional pixel array (A1) with each pixel (pm,n) represented by a data word of a predetermined length. Additional data words including event information are added to this 2-dimensional array (A1). The formatted array is converted into a second 2-dimensional array (A2) which may be made smaller than the first array by eliminating rows and columns from the formatted array. A first linear vector (A3) is created using the data words in the second array, and a second linear vector (A4) is created by repositioning the data words from the first linear vector in a random pattern. A checksum is created by summing the contents of all of the data words in the second linear vector beginning at a location established by a pre-established formula. A header (H) is formed using the resulting checksum, information identifying the device used to create the image, and the time the image is formed. A cyclical redundancy check (CRC) is performed using all the data words in the formatted array (A1). Results of this operation are also included in the header. The header is attached to the formatted image and is transmitted and stored with the formatted image to subsequently authenticate the contents of the original image.

    Abstract translation: 一种认证由相机(V)或类似视频设备创建的视频图像的方法。 图像被形成为由预定长度的数据字表示的每个像素(pm,n)的第一二维像素阵列(A1)。 包括事件信息的附加数据字被添加到该二维阵列(A1)。 格式化的阵列被转换成第二个二维阵列(A2),它可以通过从格式化阵列中消除行和列而使其小于第一个阵列。 使用第二阵列中的数据字创建第一线性矢量(A3),并通过以随机模式重新定位来自第一线性矢量的数据字来创建第二线性矢量(A4)。 通过将由预先建立的公式建立的位置开始的第二线性向量中的所有数据字的内容求和来创建校验和。 使用所得到的校验和,识别用于创建图像的设备的信息和形成图像的时间来形成报头(H)。 使用格式化阵列(A1)中的所有数据字执行循环冗余校验(CRC)。 此操作的结果也包含在标题中。 标题附加到格式化的图像,并且与格式化的图像一起发送和存储,以随后验证原始图像的内容。

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