公开(公告)号：US06570178B2

公开(公告)日：2003-05-27

申请号：US09894905

申请日：2001-06-29

申请人： Hiroaki Yasuda

发明人： Hiroaki Yasuda

IPC分类号： G03B4208

CPC分类号： G03B42/08

摘要： A radiation image data readout apparatus in which read out is performed so that a detected light quantity for each CCD element of each CCD sensor is set at a quantity below the saturation charge quantity of each CCD element, and the level of noise is reduced. The radiation energy stored on a readout-line of a stimulable phosphor sheet is estimated, and based on the estimated quantity of radiation energy, a controller sets the readout conditions, which are formed of the charge accumulation time of the readout line and the binning conditions, and readout is performed by a line sensor according to these conditions.

公开(公告)号：US06486488B1

公开(公告)日：2002-11-26

申请号：US09531217

申请日：2000-03-20

申请人： Hiroaki Yasuda

发明人： Hiroaki Yasuda

IPC分类号： G03B4208

CPC分类号： G03B42/08

摘要： The radiation image reading apparatus includes a reading device of a radiation image recorded in a radiation recording medium, a dose detecting device which detects a dose of radiation applied to record the radiation image, and a computing device by which linearity in radiation image reading is calculated using a plurality of radiation images with varying doses of radiation that have been read, and using detected doses of radiation applied to record the respective radiation images. The radiation image reading method is executed in the apparatus. The apparatus and method can check its linearity by a simple procedure and can adjust the linearity in accordance with the result of checking. The apparatus and method enable consistent outputting of satisfactory diagnostic images with the appropriate contrast. Therefore, the apparatus and method are suitable for use with a radiation imaging system typically using a phosphor sheet.

摘要翻译： 放射线图像读取装置包括记录在放射线记录介质中的放射线图像的读取装置，检测施加于记录放射线图像的辐射剂量的剂量检测装置，以及计算放射线图像读数的线性的计算装置 使用已经读取的具有不同剂量的辐射的多个辐射图像，以及使用被检测的辐射剂量来记录各个辐射图像。 在该装置中执行放射线图像读取方法。 该装置和方法可以通过简单的程序检查其线性，并可以根据检查结果调整线性度。 该装置和方法使得能够以适当的对比度输出令人满意的诊断图像。 因此，该装置和方法适用于通常使用荧光片的放射线成像系统。

公开(公告)号：US06417518B2

公开(公告)日：2002-07-09

申请号：US09770187

申请日：2001-01-29

申请人： Satoshi Arakawa ,  Hiroyuki Karasawa ,  Hiroaki Yasuda

发明人： Satoshi Arakawa ,  Hiroyuki Karasawa ,  Hiroaki Yasuda

IPC分类号： G03B4208

CPC分类号： G01T1/2014

摘要： An image signal representing radiation image information on an object stored on a stimulable phosphor sheet is read out by scanning the stimulable phosphor sheet with a stimulating light beam and photoelectrically detecting light emitted from the stimulable phosphor sheet upon stimulation thereof by a photodetector having a photoelectric surface. A variable transmittance medium whose transmittance to the light emitted from the stimulable phosphor sheet upon stimulation thereof is variable continuously or stepwise is inserted into the optical path of the light between the stimulable phosphor sheet and the photoelectric surface of the photodetector. The transmittance of the variable transmittance medium is changed according to the amount of light emitted from the stimulable phosphor sheet upon stimulation thereof so that the photoelectric surface is not saturated by an excessive amount of light impinging thereupon.

摘要翻译： 通过用刺激光束扫描可刺激的荧光体片，并且通过具有光电表面的光电检测器刺激从可刺激的荧光体片发射的光，从而读出表示存储在可刺激的荧光体片上的物体上的放射线图像信息的图像信号 。 一种可变透射率介质，其可刺激时对从可刺激荧光体片发射的光的透射率连续或逐步变化地插入到可刺激的荧光体片和光电检测器的光电表面之间的光的光路中。 可变透射率介质的透射率根据刺激时从可刺激的荧光体片发射的光量而改变，使得光电表面不被过量的光照射而饱和。

公开(公告)号：US5974062A

公开(公告)日：1999-10-26

申请号：US2248

申请日：1997-12-31

申请人： Hiroaki Yasuda ,  Hiroaki Hyuga

发明人： Hiroaki Yasuda ,  Hiroaki Hyuga

IPC分类号： G03B42/02 ,  H01S3/042 ,  H01S3/094 ,  H01S3/131 ,  H01S3/04

CPC分类号： H01S3/1312 ,  H01S3/042

摘要： A laser diode pumped solid state laser is provided with a first temperature control circuit which controls the temperature of the laser diode to a predetermined value and a second temperature control circuit which controls the temperature of the resonator of the solid state laser to a predetermined value. When the solid state laser is in a steady state, an automatic power control is carried out for keeping the light output of the solid state laser at a reference output value. When a predetermined command is issued, the automatic power control is switched to an automatic current control for keeping the electric current flowing through the laser diode at a reference current value. A temperature of the laser diode at which the light output of the solid state laser is maximized is detected while changing the temperature of the laser diode, and the first temperature control circuit controls the temperature of the laser diode to the detected temperature. A temperature of the resonator at which the light output of the solid state laser is maximized is detected while changing the temperature of the resonator, and the second temperature control circuit controls the temperature of the resonator to the detected temperature.

摘要翻译： 激光二极管泵浦固体激光器设置有将激光二极管的温度控制在预定值的第一温度控制电路和将固态激光器的谐振器的温度控制在预定值的第二温度控制电路。 当固态激光器处于稳定状态时，执行自动功率控制以将固体激光器的光输出保持在基准输出值。 当发出预定命令时，将自动功率控制切换到自动电流控制，以将流过激光二极管的电流保持在参考电流值。 在改变激光二极管的温度的同时检测固态激光器的光输出最大化的激光二极管的温度，第一温度控制电路将激光二极管的温度控制在检测温度。 在改变谐振器的温度的同时检测固态激光器的光输出最大化的谐振器的温度，第二温度控制电路将谐振器的温度控制到检测温度。

公开(公告)号：US5866938A

公开(公告)日：1999-02-02

申请号：US698349

申请日：1996-08-15

申请人： Mariko Takagi ,  Ichiro Yoshii ,  Kaoru Hama ,  Naoki Ikeda ,  Hiroaki Yasuda

发明人： Mariko Takagi ,  Ichiro Yoshii ,  Kaoru Hama ,  Naoki Ikeda ,  Hiroaki Yasuda

IPC分类号： H01L21/82 ,  H01L21/28 ,  H01L21/3205 ,  H01L23/52 ,  H01L23/525 ,  H01L29/43 ,  H01L29/00

CPC分类号： H01L23/5252 ,  H01L2924/0002 ,  H01L2924/3011

摘要： A semi conductor device is provided having the following arrangement. A first electrode is formed on the major surface of a semiconductor substrate and comprises a first Al connection layer formed over the semiconductor substrate and a barrier metal layer provided on, and electrically connected to, the first Al connection layer and serving as a barrier against the Al. An insulating film is formed over the semiconductor substrate so as to cover the first electrode. An opening is formed in the insulating film so as to partially expose the first electrode. An antifuse film is formed in a manner to partially cover the insulating film and contact with the barrier metal layer of the first electrode with the opening therebetween. The antifuse film is formed of silicon nitride whose nitrogen/silicon atomic composition ratio ranges from 0.6 to 1.2. A second electrode is formed over the antifuse film and comprised of a barrier metal layer serving as a barrier against the Al.

摘要翻译： 提供具有以下布置的半导体器件。 第一电极形成在半导体衬底的主表面上，并且包括形成在半导体衬底上的第一Al连接层和设置在第一Al连接层上并电连接到第一Al连接层的阻挡金属层，并且用作阻挡 Al。 在半导体衬底上形成绝缘膜以覆盖第一电极。 在绝缘膜上形成开口以使第一电极局部露出。 以部分地覆盖绝缘膜并且与第一电极的阻挡金属层接触的方式形成反熔丝，其间具有开口。 反熔丝由氮/硅原子组成比为0.6〜1.2的氮化硅构成。 第二电极形成在反熔丝薄膜之上，并且包括用作阻挡Al的阻挡金属层。

公开(公告)号：US5602402A

公开(公告)日：1997-02-11

申请号：US513187

申请日：1995-08-09

申请人： Hiroaki Yasuda

发明人： Hiroaki Yasuda

IPC分类号： G01T1/29 ,  G01N23/04

CPC分类号： G01T1/2014 ,  G01T1/2012

摘要： A stimulable phosphor sheet, on which a radiation image has been stored, is exposed to stimulating rays, which cause it to emit light in proportion to the amount of energy stored thereon during its exposure to radiation. The light, which is emitted from the front surface of the stimulable phosphor sheet, and the light, which is emitted from the back surface of the stimulable phosphor sheet, are detected respectively with two photoelectric read-out devices, and two image signals are thereby obtained. The two image signals are added to each other in a predetermined addition ratio. A change of the addition ratio with the passage of time is compensated for by detecting predetermined reference light with the two photoelectric read-out devices, two reference signals being thereby obtained, calculating a representative value of each of the two reference signals, two representative values being thereby obtained, and utilizing the ratio between the two representative values for the compensation for the change of the addition ratio.

摘要翻译： 已经存储放射线图像的刺激性荧光体片材暴露于刺激光线，其使其在暴露于辐射期间与其上存储的能量的量成比例地发光。 从可刺激的荧光体片的表面发射的光和从可刺激的荧光粉片的背面发射的光被分别用两个光电读出装置检测，从而两个图像信号 获得。 两个图像信号以预定的相加比例彼此相加。 通过利用两个光电读出装置检测预定的参考光来补偿随时间的增加比的改变，由此获得两个参考信号，计算两个参考信号中的每一个的代表值，两个代表值 并且利用两个代表值之间的比率来补偿相加比的变化。

公开(公告)号：US5578958A

公开(公告)日：1996-11-26

申请号：US526094

申请日：1995-09-11

申请人： Hiroaki Yasuda

发明人： Hiroaki Yasuda

IPC分类号： G06G7/12 ,  G06G7/24 ,  H03G7/00 ,  H03G11/08 ,  G06F7/556

CPC分类号： H03G7/001

摘要： A logarithmic amplifier for preventing an abnormal output from occurring when receiving an excessive input. The logarithmic amplifier is provided with an operational amplifier for logarithmic conversion purposes and a feedback circuit for feeding back an output from the operational amplifier via a resistor connected to an output terminal of the operational amplifier. An element (for example, an element consisting of a Zener diode and a diode connected in series with each other) having an effective resistance which becomes smaller when a voltage above a predetermined value is applied to the element is connected in parallel with a resistor connected to an output terminal of an operational amplifier for logarithmic conversion purposes.

摘要翻译： 一种对数放大器，用于在接收到过大的输入时防止发生异常输出。 对数放大器设置有用于对数转换目的的运算放大器和用于通过连接到运算放大器的输出端的电阻器来反馈来自运算放大器的输出的反馈电路。 一个元件（例如，由齐纳二极管和彼此串联连接的二极管组成的元件）具有当对该元件施加高于预定值的电压时变得更小的有效电阻与连接的电阻器并联连接 到运算放大器的输出端，用于对数转换目的。

公开(公告)号：US5550400A

公开(公告)日：1996-08-27

申请号：US270458

申请日：1994-07-05

申请人： Mariko Takagi ,  Ichiro Yoshii ,  Kaoru Hama ,  Naoki Ikeda ,  Hiroaki Yasuda

发明人： Mariko Takagi ,  Ichiro Yoshii ,  Kaoru Hama ,  Naoki Ikeda ,  Hiroaki Yasuda

IPC分类号： H01L21/82 ,  H01L21/28 ,  H01L21/3205 ,  H01L23/52 ,  H01L23/525 ,  H01L29/43 ,  H01L29/00

CPC分类号： H01L23/5252 ,  H01L2924/0002 ,  H01L2924/3011

摘要： A semiconductor device is provided having the following arrangement. A first electrode is formed on the major surface of a semiconductor substrate and comprises a first Al connection layer formed over the semiconductor substrate and a barrier metal layer provided on, and electrically connected to, the first Al connection layer and serving as a barrier against the Al. An insulating film is formed over the semiconductor substrate so as to cover the first electrode. An opening is formed in the insulating film so as to partially expose the first electrode. An antifuse film is formed in a manner to partially cover the insulating film and contact with the barrier metal layer of the first electrode with the opening therebetween. The antifuse film is formed of silicon nitride whose nitrogen/silicon atomic composition ratio ranges from 0.6 to 1.2. A second electrode is formed over the antifuse film and comprised of a barrier metal layer serving as a barrier against the Al.

摘要翻译： 提供具有以下布置的半导体器件。 第一电极形成在半导体衬底的主表面上，并且包括形成在半导体衬底上的第一Al连接层和设置在第一Al连接层上并电连接到第一Al连接层的阻挡金属层，并且用作阻挡 Al。 在半导体衬底上形成绝缘膜以覆盖第一电极。 在绝缘膜上形成开口以使第一电极局部露出。 以部分地覆盖绝缘膜并且与第一电极的阻挡金属层接触的方式形成反熔丝，其间具有开口。 反熔丝由氮/硅原子组成比为0.6〜1.2的氮化硅构成。 第二电极形成在反熔丝薄膜之上，并且包括用作阻挡Al的阻挡金属层。

公开(公告)号：US5386124A

公开(公告)日：1995-01-31

申请号：US45085

申请日：1993-04-12

申请人： Hiroaki Yasuda ,  Tetsuya Kojima

发明人： Hiroaki Yasuda ,  Tetsuya Kojima

IPC分类号： G03B42/02 ,  H04N1/40 ,  H01S3/098

CPC分类号： H04N1/4005 ,  G03B42/02 ,  H04N1/40037 ,  H04N1/40056

摘要： In an image scanning apparatus, a recording material is scanned with a laser beam having been produced by a semiconductor laser which oscillates in a single longitudinal mode at any given time such that an image having been recorded on the recording material may be read out therefrom or such that an image may be recorded on the recording material. A single picture element read-out period or a single picture element recording period is defined in accordance with a predetermined picture element clock pulse. A radio-frequency current is superimposed upon a drive current for the semiconductor laser. The radio-frequency current has a frequency, which is higher than the reciprocal of the single picture element read-out period or the reciprocal of the single picture element recording period and which falls within a frequency range that does not cause the semiconductor laser to simultaneously oscillate in multiple longitudinal modes.

摘要翻译： 在图像扫描装置中，用在半导体激光器中产生的激光束扫描记录材料，该半导体激光器在任何给定的时间以单一纵向模式振荡，从而可以从其中读出记录在记录材料上的图像， 使得图像可以被记录在记录材料上。 根据预定的像素时钟脉冲来定义单个图像元素读出周期或单个图像元素记录周期。 射频电流叠加在半导体激光器的驱动电流上。 射频电流的频率高于单像素读出周期的倒数或单个像素记录周期的倒数，并且处于不使半导体激光器同时的频率范围内的频率 以多个纵向模式振荡。

公开(公告)号：US5272471A

公开(公告)日：1993-12-21

申请号：US957562

申请日：1992-10-07

申请人： Shigeki Asada ,  Masayuki Sohda ,  Hiroaki Yasuda

发明人： Shigeki Asada ,  Masayuki Sohda ,  Hiroaki Yasuda

IPC分类号： G09G5/00 ,  G06F3/147 ,  G06T5/00 ,  G09G3/20 ,  G09G3/36 ,  H04N5/66 ,  G09G5/10

CPC分类号： G06F3/1475 ,  G09G3/3611 ,  G09G2340/0414 ,  G09G2340/0421 ,  G09G2340/0442 ,  G09G3/2051

摘要： A display system for converting N bit signals, each representing 2.sup.N gray levels, to M bit signals representing 2.sup.M gray levels, where N is an integer larger than or equal to 2 and M is an integer satisfying N>M.gtoreq.1. Each of the N bit signals are separated into higher M bits and lower N-M bits. There are 2.sup.N-M tables, each of which stores a distinctive set of P.times.Q modification values satisfying P.times.Q.gtoreq.2.sup.N-M. One of the tables is selected using the N-M bits. Unequality between a first set of modification values and a second set of modification values of the selected table are detected. The first set of modification values and the second set of modification values are exchanged to generate a modified table of the selected table. The M bits of one N bit signal and each of the modification values of the selected table are added to generate a first set of P.times.Q M bit signals. The M bits of the next N bit signal and each of the modification values of the modified table are added to generate a second set of P.times.Q M bit signals. The first and second sets of M bit signals are provided to a display device of 2.sup.M gray levels.