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公开(公告)号：US4769757A
公开(公告)日：1988-09-06
申请号：US854555
申请日：1986-04-21
CPC分类号： A61B6/032 , G01T1/2985 , Y10S378/901
摘要： A CT scanner including a scanning device including (a) device for rotating an x-ray source around an object to be examined, the x-ray source radiating x-rays, while the x-ray source is being rotated, in the form of fan beams covering a region of the object to be examined, and (b) a multielement x-ray detector for detecting x-ray fan beams transmitted through the object to thus collect data around the irradiated object; an arithmetic device for arithmetically reconstructing the distribution of the x-ray absorption coefficients of the object across a measured cross-section from the data; and a display for displaying the distribution where the arithmetic device includes a device for producing data equivalent to data derived from parallel beams not regularly spaced apart from each other from the collected data around the irradiated object, a device for subjecting the produced data to filtering, and a device for correcting inhomogeneity in the data equivalent to data derived from parallel beams not regularly spaced and for back-projecting the image of the distribution.
摘要翻译： 一种CT扫描仪，其包括扫描装置，所述扫描装置包括：（a）用于使x射线源围绕待检查对象旋转的装置，所述X射线源在X射线源正在旋转的同时X射线源以X射线源旋转的形式 扇形光束覆盖待检测物体的区域，以及（b）多元素X射线检测器，用于检测通过物体透射的x射线扇形光束，从而收集被照射物体周围的数据; 算术装置，用于在数据的测量横截面上算术地重建物体的x射线吸收系数的分布; 以及用于显示分配的显示器，其中所述运算装置包括用于产生与从所述被照射对象周围的所收集的数据彼此不规则地间隔开的并行光束导出的数据相当的数据的装置;用于对所生成的数据进行滤波的装置， 以及用于校正与不规则间隔的平行光源导出的数据相当的数据的不均匀性的装置，以及用于反投影分布图像的装置。
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2.发明授权
公开(公告)号：US5502384A
公开(公告)日：1996-03-26
申请号：US243907
申请日：1994-05-17
申请人： Chitose Nakaya , Yoshitaka Bito , Etsuji Yamamoto , Hiroshi Nishimura , Hiroyuki Takeuchi , Shigeru Watanabe , Akihiro Miyajima , Hitoshi Arai
发明人： Chitose Nakaya , Yoshitaka Bito , Etsuji Yamamoto , Hiroshi Nishimura , Hiroyuki Takeuchi , Shigeru Watanabe , Akihiro Miyajima , Hitoshi Arai
IPC分类号： A61B5/055 , G01R33/28 , G01R33/561 , G01R33/565 , G01R33/20
CPC分类号： G01R33/565 , G01R33/561
摘要： In an image reconstruction method in a nuclear magnetic resonance imaging apparatus, the method comprises first and second steps to get detected data S.sub.I for at least about half of region inclusive of an origin and data S.sub.IV in a region symmetric with respect to a line passing through an origin on one of axes from the detected region in the acquired data space and parallel to the other axis, respectively, third and fourth steps to perform inverse Fourier transform on the data S.sub.I and S.sub.IV, respectively, a fifth step to get a complex conjugate value of the result obtained from Step 3, a sixth step to get a complex conjugate value of the result obtained from Step 4, a seventh step to calculate a phase map from the results obtained from the second, third, fourth, fifth and sixth steps, an eighth step to multiply the result obtained from step 6 by the phase map obtained from step 7 and to obtain a phase corrected data, and a ninth step to sum the result obtained from the third step and the result obtained from the eighth step. The method can thus obtain the whole reconstructed image.
摘要翻译： 在核磁共振成像装置中的图像重建方法中，该方法包括第一和第二步骤，用于在相对于通过的线对称的区域中获得包含原点和数据SIV的区域的至少约一半的检测数据SI 在获取的数据空间中的检测区域中的一个轴上的原点，并且平行于另一个轴的原点;第三和第四步骤，分别对数据SI和SIV执行逆傅里叶变换，第五步骤以获得复共轭 从步骤3获得的结果的值，第六步骤，获得从步骤4获得的结果的复共轭值，第七步骤，从根据从第二，第三，第四，第五和第六步骤获得的结果计算相位图 第八步，将从步骤6获得的结果乘以从步骤7获得的相位图，并获得相位校正数据;第九步骤，将从第三步骤获得的结果与res 从第八步获得。 因此，该方法可以获得整个重建图像。
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公开(公告)号：US20220288922A1
公开(公告)日：2022-09-15
申请号：US17196680
申请日：2021-03-09
申请人： Hiroshi Nishimura
发明人： Hiroshi Nishimura
摘要： Printheads and methods of operation. In one embodiment, a printhead includes a plurality of jetting channels comprising first jetting channels configured to jet a first print fluid and second jetting channels configured to jet a second print fluid, and a driver circuit communicatively coupled to actuators of the jetting channels. The driver circuit receives a drive waveform comprising non-jetting pulses and jetting pulses, and gating signals comprising a first active gating signal designated for jetting the first print fluid, and a second active gating signal designated for jetting the second print fluid. The driver circuit selectively applies the non-jetting pulses and the jetting pulses to actuators of the first jetting channels based on the first active gating signal to jet the first print fluid, and selectively applies the jetting pulses to actuators of the second jetting channels based on the second active gating signal to jet the second print fluid.
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公开(公告)号：US20220281222A1
公开(公告)日：2022-09-08
申请号：US17194869
申请日：2021-03-08
申请人： Hiroshi Nishimura , Giang Vo , Cesar Hurtado
发明人： Hiroshi Nishimura , Giang Vo , Cesar Hurtado
IPC分类号： B41J2/14
摘要： Printheads and manifolds within printheads. In one embodiment, a method comprises determining a resonant frequency of jetting channels for a printhead, and selecting a target length for a manifold fluidly coupled to the jetting channels such that resonant frequencies of the manifold differ from the resonant frequency of the jetting channels by a threshold amount.
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公开(公告)号：US11376857B2
公开(公告)日：2022-07-05
申请号：US17204046
申请日：2021-03-17
申请人： Hiroshi Nishimura
发明人： Hiroshi Nishimura
摘要： Printheads for a jetting apparatus. In one embodiment, a printhead comprises a plurality of jetting channels having nozzles on a bottom surface configured to jet a print fluid, and longitudinal sides disposed between the bottom surface and a top surface. The printhead also comprises Input/Output (I/O) ports disposed on one or more of the longitudinal sides, and configured to convey the print fluid into or out of the printhead. The printhead further includes one or more chain manifolds disposed between the I/O ports.
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公开(公告)号：US11001070B2
公开(公告)日：2021-05-11
申请号：US15913795
申请日：2018-03-06
申请人： Hiroshi Nishimura
发明人： Hiroshi Nishimura
摘要： Apparatus and method for providing a print fluid to a flow-through printhead. The printhead has a row of jetting channels configured to jet droplets of a print fluid, a supply manifold fluidly coupled to the row of jetting channels, and a return manifold fluidly coupled to the row of jetting channels. A first reservoir is fluidly coupled to the supply manifold, and a second reservoir is fluidly coupled to the return manifold. The first reservoir and the second reservoir are fluidly isolated except through the printhead.
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公开(公告)号：US10981388B2
公开(公告)日：2021-04-20
申请号：US16351147
申请日：2019-03-12
申请人： Hiroshi Nishimura
发明人： Hiroshi Nishimura
摘要： Printheads for a jetting apparatus. In one embodiment, a printhead comprises a plurality of jetting channels having nozzles on a bottom surface configured to jet a print fluid, and longitudinal sides disposed between the bottom surface and a top surface. The printhead also comprises Input/Output (I/O) ports disposed on one or more of the longitudinal sides, and configured to convey the print fluid into or out of the printhead. The printhead further includes one or more chain manifolds disposed between the I/O ports.
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公开(公告)号：US10016991B1
公开(公告)日：2018-07-10
申请号：US15443520
申请日：2017-02-27
申请人： Hiroshi Nishimura
发明人： Hiroshi Nishimura
CPC分类号： B41J25/001 , B41J2/14233 , B41J2/1433 , B41J2/175 , B41J2/18 , B41J2002/14419 , B41J2002/14467 , B41J2202/12
摘要： A carriage assembly for a printer that reciprocates along scan directions. The carriage assembly includes at least one printhead having a row of jetting channels for ejecting a print fluid, and reservoirs mounted on the carriage assembly that each supply the print fluid to the printhead. At least one of reservoirs is mounted on the carriage assembly to be offset from the row of jetting channels.
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公开(公告)号：US09604457B2
公开(公告)日：2017-03-28
申请号：US15007102
申请日：2016-01-26
申请人： Hiroshi Nishimura , Giang Vo , Connor Matsumori
发明人： Hiroshi Nishimura , Giang Vo , Connor Matsumori
CPC分类号： B41J2/14274 , B41J2/14201 , B41J2/14233 , B41J2/1433 , B41J2/18 , B41J2002/14419 , B41J2202/12
摘要： An inkjet head that is able to circulate ink. The inkjet head includes a diaphragm plate, a first restrictor plate, one or more chamber plates, a second restrictor plate, and an orifice plate. The orifice plate forms a plurality of nozzles. The chamber plates form a plurality of chambers corresponding with the nozzles, and also form a return manifold for receiving ink from the chambers when circulating the ink through the inkjet head. The diaphragm plate forms a diaphragm that seals the chambers. The first restrictor plate controls a flow of ink between the chambers and the return manifold to circulate the ink through the inkjet head. The second restrictor plate controls the flow of ink between a supply manifold and the chambers.
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10.发明授权公开(公告)号：US09131521B2
公开(公告)日：2015-09-08
申请号：US13484313
申请日：2012-05-31
CPC分类号： H04W72/1257 , H04L1/1867 , H04W28/06 , H04W72/0446 , H04W84/18
摘要： In a communications apparatus, a communication controller transmits and receives signals on any of plural channels. A channel switching controller is responsive to channel switching information selectively defining plural reception-waiting periods using the channels to alter a channel to be used by the communication controller. A neighboring node channel controller exchanges channel switching information with other nodes to manage the channel switching information received from the other nodes. When transmitting transmission signals, a transmission controller refers to the channel switching information of the other nodes, and controls repetitive transmission of the transmission signals on the channel thus searched for.
摘要翻译： 在通信装置中，通信控制器在多个信道中的任一个发送和接收信号。 信道切换控制器响应于使用信道选择性地定义多个接收等待周期的信道切换信息，以改变由通信控制器使用的信道。 相邻节点信道控制器与其他节点交换信道交换信息，以管理从其他节点接收的信道交换信息。 当发送发送信号时，发送控制器参考其他节点的信道切换信息，并且控制所搜索的信道上的发送信号的重复发送。
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