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公开(公告)号：US4673274A
公开(公告)日：1987-06-16
申请号：US776031
申请日：1985-09-13
摘要： An automatic focusing system for a camera includes a light emitter for emitting a distance measuring light beam and a condenser lens for condensing the light beam reflected by an object. A light spot detector produces output signals corresponding to the position of the focused spot of reflected light impinging thereon. Various circuitry, including adders and subtracters and amplifiers and rectifiers and integrators are provided for processing the output signals of the light spot detector. A lens encoder detects the existing focusing position of a picture taking lens and further circuitry is provided for comparing the existing focusing position of the picture taking lens with a desired optimum focusing position and for driving the lens by a lens driving unit so as to move the lens to its optimum focusing position.
摘要翻译： 用于照相机的自动对焦系统包括用于发射距离测量光束的光发射器和用于聚焦由物体反射的光束的聚光透镜。 光点检测器产生对应于其上照射的反射光的聚焦光点的位置的输出信号。 提供各种电路，包括加法器和减法器以及放大器和整流器和积分器，用于处理光点检测器的输出信号。 透镜编码器检测图像拍摄镜头的现有对焦位置，并且提供另外的电路用于将摄像镜头的现有聚焦位置与期望的最佳聚焦位置进行比较，并且用于通过透镜驱动单元驱动透镜， 透镜到其最佳聚焦位置。
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公开(公告)号：US4850692A
公开(公告)日：1989-07-25
申请号：US876203
申请日：1986-06-19
申请人： Yoshiaki Hirao , Ryuichiro Kuga , Hiroyuki Asakura , Shusuke Ono , Yoshitomi Nagaoka , Shinji Hataji , Hiromichi Tanaka
发明人： Yoshiaki Hirao , Ryuichiro Kuga , Hiroyuki Asakura , Shusuke Ono , Yoshitomi Nagaoka , Shinji Hataji , Hiromichi Tanaka
IPC分类号： G02B7/09 , G01C3/06 , G01C3/10 , G01S7/491 , G02B7/32 , G03B13/36 , H01L31/02 , H01L31/0216 , H04N5/232
CPC分类号： G01C3/10 , G01S7/4816 , G01S7/4912 , G02B7/32 , H01L31/02024 , H01L31/02164 , G01S17/48
摘要： A semiconductor light position detector for a rangefinder which projects a light beam onto an object and receives a reflected light beam from the object to measure a distance to the object. A portion of the light-receiving surface of the detector on which the reflected beam will not form a light spot is partially covered with a member that blocks unwanted light. Thus, the malfunctions caused by the flare component of the light from the light projector and the malfunctions due to increases in the shot noise under a high illuminance are reduced greatly.
摘要翻译： 一种用于测距仪的半导体光位置检测器，其将光束投射到物体上并接收来自物体的反射光束以测量到物体的距离。 反射光束不会形成光点的检测器的光接收表面的一部分被阻挡不想要的光的部件覆盖。 因此，由于来自投光器的光的耀斑部分引起的故障以及由于在高照度下的喷射噪声的增加而导致的故障大大降低。
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公开(公告)号：US4758764A
公开(公告)日：1988-07-19
申请号：US870119
申请日：1986-06-03
CPC分类号： H01L33/58
摘要： In an automatic focus adjustment apparatus with a light-emitting device comprising a condenser lens and a light-emitting element which radiates light onto an object and adjusts the focal point according to a light reflected back from the object, undesired flare is eliminated by placing a diaphragm sufficiently close to the light-emitting element so that only the effective light from the element passes to the condenser lens by using a cap, an opaque paint or a spatial filter, and/or by applying a low reflectance paint to the inner wall of an outer casing of the light-emitting device.
摘要翻译： 在具有发光装置的自动调焦装置中，该发光装置包括聚光透镜和发光元件，该发光元件将光照射到物体上并且根据从物体反射回来的光调节焦点，通过放置一个 隔膜足够靠近发光元件，使得仅通过使用盖子，不透明涂料或空间滤光器，来自元件的有效光通过聚光透镜，和/或通过将低反射涂料施加到 发光装置的外壳。
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公开(公告)号：US4621292A
公开(公告)日：1986-11-04
申请号：US661326
申请日：1984-10-16
CPC分类号： G01S17/48 , G02B7/32 , G03B21/53 , H04N5/23212
摘要： An automatic focusing device for a video camera includes a projector for projecting an infrared ray used for measuring distances and a converging lens for focusing reflected infrared ray light from an object whose distance is to be measured. A light spot detector and a computer are provided for determining whether the video camera is in focus. A lens encoder is utilized to determine the position of a focusing lens and a lens driving unit moves the position of a photographic lens used for photographing the object forwardly or backwardly in dependence upon outputs from the lens encoder and computer so as to automatically focus the video camera in response to the infrared rays reflected from the object to be photographed.
摘要翻译： 用于摄像机的自动聚焦装置包括投影用于测量距离的红外线的投影仪和用于聚焦来自待测距离的物体的反射红外线光的会聚透镜。 提供光点检测器和计算机用于确定摄像机是否处于焦点。 利用透镜编码器来确定聚焦透镜的位置，并且透镜驱动单元根据来自透镜编码器和计算机的输出将用于拍摄物体的摄影镜头的位置向前或向后移动，以便自动对焦视频 照相机响应于要拍摄的物体反射的红外线。
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公开(公告)号：US4849813A
公开(公告)日：1989-07-18
申请号：US191886
申请日：1988-05-09
IPC分类号： H04N5/235 , H04N5/238 , H04N5/335 , H04N5/341 , H04N5/347 , H04N5/355 , H04N5/372 , H04N5/378
摘要： According to the present invention, a narrow latitude caused by a narrow dynamic range of a solid state image pickup device is improved, and a video camera capable of obtaining a high quality video signal having no signal saturation and black collapse is realized. Scanning is executed in a plurality of times during normal one picture scanning period (one field or one frame period) prescribed in the broadcasting system, and the stop value of a stop mechanism of a camera lens is prescribed so that the levels of video signals corresponding to respective pictures become a fixed value, thus obtaining respective output signals with no saturation. These output signals are stored in a memory in each picture unit after A/D conversion. Then, a certain arithmetic processing is performed in synchronization with respective picture positions, and these video signals are outputted in synchronization with the vertical synchronizing timing prescribed in the broadcasting system as digital video signals having predetermined levels. These output digital video signals are restored again to the synchronizing frequency prescribed in the orginal broadcasting system thereafter. The digital video signals thus obtained have S/N improved to be better than the video signal which is outputted from the image pickup device. Accordingly, the dynamic range is also improved sufficiently.
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公开(公告)号：US4591736A
公开(公告)日：1986-05-27
申请号：US450102
申请日：1982-12-15
申请人： Yoshiaki Hirao , Yoshitomi Nagaoka
发明人： Yoshiaki Hirao , Yoshitomi Nagaoka
CPC分类号： G11C27/026
摘要： A pulse signal amplitude storage-holding apparatus utilizes a plurality of series connected storage-holding circuits which store and hold the pulse magnitude of an electrical pulse signal whose amplitude is to be stored. At least one electrical pulse signal amplitude compensating circuit may be added to compensate for a storage error with respect to the pulse magnitude of the electrical pulse signal caused by the charge and discharged characteristics of each of the storage-holding circuits. In the alternative, at least one of the storage-holding circuits may be arranged so as to output an output signal accompanied by an overshoot of a fixed amount with respect to the input pulse signal, the overshoot thereby compensating for the abovenoted storage error.
摘要翻译： 脉冲信号幅度存储保持装置利用多个串联连接的存储保持电路，其存储和保持振幅要存储的电脉冲信号的脉冲幅度。 可以添加至少一个电脉冲信号幅度补偿电路以补偿由每个存储保持电路的充电和放电特性引起的电脉冲信号的脉冲幅度的存储误差。 另一方面，存储保持电路中的至少一个可以被布置为输出伴随着输入脉冲信号的固定量的过冲的输出信号，从而补偿上述的存储误差。
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7.发明授权Apparatus for high-density minimal crosstalk recording and reproducing of terminance and chrominance signals using a magnetic tape 失效用于使用磁带记录和再现终端和色度信号的高密度最小串扰的装置
公开(公告)号：US4811119A
公开(公告)日：1989-03-07
申请号：US890347
申请日：1986-07-30
摘要： A magnetic tape recording/reproducing apparatus for recording video signals on a magnetic tape without providing a guard band between each two adjacent signal tracks. The apparatus comprises a first switching circuit for exchanging 2-channel component signals every nH period to obtain two combined signals each composed of the 2-channel signals which alternate every nH period, two modulators for modulating the two combined signals, a head section having two pairs of rotarty magnetic heads for recording the modulated signals on the magnetic tape so that each two adjacent blocks contain a same channel component signal and for reproducing the recorded signals from the magnetic tape, two demodulators for demodulating the reproduced signals, and a second switching circuit for exchanging the demodulated signals every nH to obtain the 2-channel component signals. With this arrangement, the recording density is remarkably increased and the cross talk interference hardly occur.
摘要翻译： 一种用于在磁带上记录视频信号而不在每个两个相邻信号轨道之间提供保护带的磁带记录/再现装置。 该装置包括用于每nH个周期交换2信道分量信号的第一切换电路，以获得两个组合信号，每个组合信号由每nH周期交替的2信道信号组成，两个用于调制两个组合信号的调制器， 用于将调制信号记录在磁带上的两对旋转磁头，使得每两个相邻的块包含相同的信道分量信号，并且用于从磁带再现记录的信号，用于解调再生信号的两个解调器和第二切换电路 用于每nH交换解调信号以获得2信道分量信号。 利用这种布置，记录密度显着增加，并且几乎不发生串扰干扰。
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公开(公告)号：US4548480A
公开(公告)日：1985-10-22
申请号：US459242
申请日：1983-01-19
CPC分类号： G02B13/16
摘要： A projection lens apparatus for projecting an image from a CRT onto a remote screen. The lens apparatus is basically a Petzval type for a large aperture ratio and comprises three lenses. The first lens is a plastic lens having at least one aspherical surface and the third lens has a bi-aspherical surface. To reduce the thermal drift of the focal position, the second lens is a glass lens, having relatively largely positive optical power.
摘要翻译： 一种用于将来自CRT的图像投影到远程屏幕上的投影透镜装置。 透镜装置基本上是用于大孔径比的Petzval型，并且包括三个透镜。 第一透镜是具有至少一个非球面的塑料透镜，第三透镜具有双非球面。 为了减少焦点位置的热漂移，第二透镜是玻璃透镜，具有较大的正光学功率。
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公开(公告)号：US4453178A
公开(公告)日：1984-06-05
申请号：US331471
申请日：1981-12-16
摘要： A projection television apparatus having a retrofocus type projection lens system which has a sufficiently long back focus, a small F number and a large distortion. The lens system is constructed with five components and five lenses and comprises a first lens which is a negative meniscus lens that has at its screen side a convex surface, a second lens which is a biconvex lens, a third lens which is a biconcave lens, a fourth lens which is a positive lens, and a fifth lens which is a biconvex lens, and which is defined by the following four conditions, i.e.1.4f
摘要翻译： 一种投影电视装置，具有后焦点足够长，F值小，大失真等的后焦点型投影透镜系统。 透镜系统由五个部件和五个透镜构成，并且包括：第一透镜，其是在其屏幕侧具有凸面的负弯月形透镜，作为双凸透镜的第二透镜，作为双凹透镜的第三透镜， 作为正透镜的第四透镜和作为双凸透镜的第五透镜，其由以下四个条件限定，即：1.4f <| f1 <1.9f（i）0.35f
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公开(公告)号：US4170026A
公开(公告)日：1979-10-02
申请号：US906563
申请日：1978-05-16
摘要： Circuitry for line recognition of a television signal comprises a serration detector which receives the sync pulse and separates the portion of the serration of the vertical sync pulse; a first counter which is coupled to the serration detector and produces output pulse at specific time interval between two successive output pulses of the serration detector; a circuit which is triggered by the output pulse of the first counter and produces a pulse; a second counter which receives said pulse and the horizontal retrace pulse, counts said horizontal retrace pulse when said pulse has a specific level, becomes quiescent when said pulse has another specific level, and then produces the line identification pulse on the desired horizontal line; a first decoder which is connected to said second counter and produces the reset pulse for resetting said first counter after said first counter completes its desired counting action; and a second decorder which produces the reset pulse for resetting said circuit after said second counter produces desired line identification pulse.
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