公开(公告)号：US5517369A

公开(公告)日：1996-05-14

申请号：US348161

申请日：1994-11-28

申请人： Hitoshi Takeuchi ,  Eiji Yamada ,  Chiaki Yamawaki ,  Tetsuo Iwaki

发明人： Hitoshi Takeuchi ,  Eiji Yamada ,  Chiaki Yamawaki ,  Tetsuo Iwaki

IPC分类号： G11B5/00 ,  G11B5/008 ,  G11B5/02 ,  G11B5/035 ,  G11B5/09 ,  G11B5/39 ,  G11B5/49 ,  G11B15/02 ,  G11B15/12

CPC分类号： G11B5/3961 ,  G11B15/02 ,  G11B15/12 ,  G11B5/02 ,  G11B5/035 ,  G11B5/09 ,  G11B5/4992 ,  G11B2005/0016 ,  G11B5/00813

摘要： In a multi-track magnetic signal reproducing apparatus, a plurality of MR heads including MR (Magneto Resistance Effect) elements are provided correspondingly to tracks on a magnetic tape. At the time of reproduction, constant current from a constant current power supply is sequentially supplied as pulse-shaped current for detecting a signal to each MR element by a switching operation by switch in response to a prescribed clock signal, and output voltage from each MR element related to reproduction of a magnetic signal on a corresponding track is sequentially provided to one input side of a differential amplifier. In differential amplifier, the offset voltage of each MR element provided to the other input side and the above-described output voltage are differentially amplified and only voltage due to the reproducing magnetic signal of each track is accurately extracted. Accordingly, the supply of pulse-shaped current effectively suppresses increase in the amount of consumption current regardless of the number of tracks on the tape (or the number of heads), and since amplifier is shared between the tracks, the number of necessary terminals for such a multi-track MR head is reduced.

摘要翻译： 在多磁道磁信号重放装置中，相应于磁带上的轨道提供包括MR（磁阻效应）元件的多个MR磁头。 在再现时，来自恒流电源的恒定电流作为脉冲形电流被顺序提供，用于通过响应于规定的时钟信号的开关的切换操作检测每个MR元件的信号，并且从每个MR输出电压 将与相应轨道上的磁信号的再现相关的元件依次提供给差分放大器的一个输入侧。 在差分放大器中，提供给另一输入侧的每个MR元件的偏移电压和上述输出电压被差分放大，并且仅准确地提取由于每个磁道的再现磁信号引起的电压。 因此，脉冲电流的供给有效地抑制消耗电流量的增加，而与带上的磁道数（或磁头数）无关，并且由于放大器在磁道之间共享，所以需要的端子的数量 这样的多轨MR磁头减少了。

公开(公告)号：US5668746A

公开(公告)日：1997-09-16

申请号：US364187

申请日：1994-12-27

申请人： Tetsuo Iwaki ,  Toshiaki Harada ,  Chiaki Yamawaki

发明人： Tetsuo Iwaki ,  Toshiaki Harada ,  Chiaki Yamawaki

IPC分类号： G11B5/035 ,  G11B5/09 ,  G11B20/10 ,  H03H15/00 ,  H03H17/00 ,  H03H17/02 ,  H03H21/00 ,  H04B3/04 ,  G06F17/10 ,  G11B5/00

CPC分类号： G11B20/10037 ,  G11B20/10009 ,  G11B20/10046 ,  G11B5/035 ,  G11B5/09

摘要： Low-frequency components of a reproduced modulated signal is attenuated by an analog high-pass filter. The modulated signal with its low-frequency components attenuated is converted into a digital signal by means of an A/D converter. Then, the digital signal is directly introduced to a finite impulse response digital filter to be subjected to reproduced waveform equalization. Thereafter, the attenuation of the low-frequency components effected by the analog high-pass filter is compensated in an infinite impulse response digital filter.

摘要翻译： 再现调制信号的低频分量由模拟高通滤波器衰减。 其衰减的低频分量的调制信号通过A / D转换器转换为数字信号。 然后，将数字信号直接引入有限脉冲响应数字滤波器以进行再现波形均衡。 此后，由无限脉冲响应数字滤波器补偿由模拟高通滤波器影响的低频分量的衰减。

公开(公告)号：US5834761A

公开(公告)日：1998-11-10

申请号：US821858

申请日：1997-03-21

申请人： Hideo Okada ,  Masayuki Nishikawa ,  Tohru Okuda ,  Tetsuo Iwaki ,  Chiaki Yamawaki ,  Yoshinori Kinai

发明人： Hideo Okada ,  Masayuki Nishikawa ,  Tohru Okuda ,  Tetsuo Iwaki ,  Chiaki Yamawaki ,  Yoshinori Kinai

IPC分类号： H04N1/40 ,  H04N5/225 ,  H04N9/04 ,  H01J40/14

CPC分类号： G03B5/00 ,  H04N1/40068 ,  H04N5/2254 ,  H04N5/2259 ,  H04N9/045 ,  H04N2209/046

摘要： The Invention is an image input apparatus equipped with means of image shifting which is capable of inputting images of different resolutions, and enables the transmission band of the spatial filter to be switched in accordance with resolution in order to prevent moire. When a flat transparent refraction plate 22 is inclined relative to the optical axis 10 by which light from the object is introduced, the position where the image is formed on the imaging surface of the CCD 14 is shifted, thus making image shifting possible. High resolution images are obtained by shifting the image a distance shorter than the distance between the photosensitive parts of the CCD 14, and then combining the images. The transmission band of the spatial filter 12 for preventing moire can be switched by changing the relative angles of the double refraction plates 20, 21. The transmission band of the spatial filter 12 is switched to the high frequency side when inputting high resolution images by means of the image shift mechanism 13, thus obtaining images of good resolution.

摘要翻译： 本发明是一种图像输入装置，其具有能够输入不同分辨率的图像的图像移位装置，并且能够根据分辨率切换空间滤波器的发送频带，以防止莫尔条纹。 当平坦的透明折射板22相对于被引入物体的光的光轴10倾斜时，在CCD 14的成像表面上形成图像的位置被移位，从而使图像移位成为可能。 通过将图像移动距离短于CCD 14的感光部分之间的距离，然后组合图像来获得高分辨率图像。 可以通过改变双折射板20,21的相对角度来切换用于防止莫尔条纹的空间滤波器12的传输带。当通过装置输入高分辨率图像时，空间滤波器12的传输频带切换到高频侧 的图像偏移机构13，从而获得良好的分辨率的图像。

公开(公告)号：US5173815A

公开(公告)日：1992-12-22

申请号：US674207

申请日：1991-03-25

申请人： Tetsuo Iwaki ,  Hidetaka Mizumaki ,  Chiaki Yamawaki

发明人： Tetsuo Iwaki ,  Hidetaka Mizumaki ,  Chiaki Yamawaki

IPC分类号： G11B20/12 ,  G11B27/02 ,  G11B27/032 ,  G11B27/036

CPC分类号： G11B27/036 ,  G11B2220/216 ,  G11B2220/90 ,  G11B2220/913 ,  G11B27/032

摘要： A recording position compensation circuit for use in the digital information recording-reproduction apparatus of the present disclosure has a microprocessor for generating an offset signal indicating a deviation between standard signal processing time, which is required for a process wherein digital medium information already recorded on the recording medium is reproduced through the advanced reproduction head and re-recorded on the recording medium through the recording head, and inter-head travelling time required for the recording medium to travel a distance from the advanced reproduction head to the recording head. A first counter generates a reference symbol pointer indicating a reference of a sequence whereby digital information stored in the memory is read out so that a part of the digital information is rewritten. A second counter generates a compensated symbol pointer having a phase difference corresponding to the deviation with respect to the reference symbol pointer. Thus, since digital information is read out from the memory so that the signal processing time from reproduction to re-recording may coincide with the inter-head travelling time, a recording position on the recording medium at which rewriting is performed, is corrected.

公开(公告)号：US4812987A

公开(公告)日：1989-03-14

申请号：US795231

申请日：1985-11-05

申请人： Chiaki Yamawaki ,  Taizo Sasada ,  Tetsuo Iwaki ,  Katsubumi Koyanagi

发明人： Chiaki Yamawaki ,  Taizo Sasada ,  Tetsuo Iwaki ,  Katsubumi Koyanagi

IPC分类号： G11B20/10 ,  G11B20/14 ,  G11B20/22 ,  G06F7/38 ,  H03B1/00

CPC分类号： G11B20/10009 ,  G11B20/10527 ,  G11B20/1426

摘要： A wave shaping circuit includes a digital sampling circuit for sampling an input signal and producing a digital signal. The sampled signal is detected by a sign detector for detecting whether it is positive or negative. A unit difference generator is provided for generating a unit difference which is equal to a difference increased, during one sampling cycle, in a positive or negative direction as detected by the sign detector. A register is provided for storing a summed difference obtained in the previous sampling cycle. The summed difference is multiplied by a predetermined coefficient which is between 0 and 1 so that the product changes exponentially. A first adder is provided for adding the summed difference multiplied by the coefficient with the unit difference. The added result is stored in the register. A second adder is provided for adding the sampled input signal with the summed signal stored in the register, and producing a corrected signal.

摘要翻译： 波形整形电路包括用于对输入信号进行采样并产生数字信号的数字采样电路。 采样信号由符号检测器检测，用于检测其是正还是负。 提供了一个单位差分发生器，用于产生一个单位差值，该单位差值等于在一个采样周期期间在由符号检测器检测到的正或负方向上增加的差值。 提供了一个寄存器，用于存储在先前采样周期中获得的总和差。 将总和差乘以0和1之间的预定系数，使得乘积呈指数变化。 第一加法器用于将乘以系数的求和差与单位差相加。 添加的结果存储在寄存器中。 提供第二加法器，用于将采样的输入信号与存储在寄存器中的求和信号相加，并产生校正信号。

公开(公告)号：US06577341B1

公开(公告)日：2003-06-10

申请号：US08950361

申请日：1997-10-14

申请人： Eiji Yamada ,  Toshiaki Harada ,  Tetsuo Iwaki ,  Tohru Okuda

发明人： Eiji Yamada ,  Toshiaki Harada ,  Tetsuo Iwaki ,  Tohru Okuda

IPC分类号： H04N314

CPC分类号： H04N9/045 ,  H04N5/349 ,  H04N2209/046

摘要： An imaging apparatus reduces the influence of the movement of hands and of the motion of an object on a high resolution picture image. Picture image light from the object passes through an optical system and light-transmitting domains of a color filter provided at the light incident side of an imaging device. The light-transmitting domains transmit only predetermined chromatic lights of the picture image light to input to corresponding photo-receiving domains of the imaging device. The imaging device is a two-picture element mixed reading type device. In a high resolution mode, an image forming point of the picture image light is moved to two places in parallel, and the picture image light is formed at each image forming point to image the picture image light. Then, the signal processing circuit combines the two original picture image signals whose image forming points during the imaging operation are different to generate a single output picture image signal. Thereby, an equivalent imaging time in imaging a single output picture image may be shortened.

摘要翻译： 成像装置减少了手的运动和物体的运动对高分辨率图像的影响。 来自物体的图像光通过设置在成像装置的光入射侧的滤色器的光学系统和透光区域。 透光域仅传输图像光的预定彩色光，以输入到成像装置的相应的光接收区域。 成像装置是双元素混合读取型装置。 在高分辨率模式中，图像光的图像形成点平行移动到两个位置，并且在每个图像形成点处形成图像光以对图像图像进行成像。 然后，信号处理电路组合成像操作期间的图像形成点不同的两个原始图像图像信号，以生成单个输出图像图像信号。 因此，可以缩短对单个输出图像进行成像的等效成像时间。

公开(公告)号：US5754226A

公开(公告)日：1998-05-19

申请号：US574612

申请日：1995-12-19

申请人： Eiji Yamada ,  Tetsuo Iwaki

发明人： Eiji Yamada ,  Tetsuo Iwaki

IPC分类号： H04N5/225 ,  G06T3/40 ,  H04N5/14 ,  H04N5/232 ,  H04N5/335 ,  H04N5/349 ,  H04N5/351 ,  H04N5/357 ,  H04N5/372 ,  H04N5/378 ,  H04N7/18

CPC分类号： G06T3/4007 ,  H04N3/1587 ,  H04N5/335 ,  H04N5/145

摘要： An imaging apparatus includes: an imaging plate having a light receiving face; focusing device for focusing light from a subject on the light receiving face of the imaging plate as the image formed on the light receiving face; image position displacing device for displacing a position of the image formed by the focusing device with respect to a reference position; image position displacement control device for controlling the image position displacing device; motion vector detecting device for detecting a motion vector of each image with respect to a reference image; and image synthesis device for displacing pixels constituting each image and for interpolating the displaced pixels constituting each image between adjacent pixels of the reference image, thereby synthesizing the images into a single image.

摘要翻译： 一种成像设备包括：具有光接收面的成像板; 聚焦装置，用于将来自被摄体的光聚焦在成像板的光接收面上，作为形成在光接收面上的图像; 图像位置移位装置，用于移动由聚焦装置形成的图像相对于基准位置的位置; 用于控制图像位置移位装置的图像位置位移控制装置; 运动矢量检测装置，用于检测每个图像相对于参考图像的运动矢量; 以及图像合成装置，用于移位构成每个图像的像素，并且用于内插在参考图像的相邻像素之间构成每个图像的偏移像素，从而将图像合成为单个图像。

公开(公告)号：US5657082A

公开(公告)日：1997-08-12

申请号：US574619

申请日：1995-12-19

申请人： Toshiaki Harada ,  Eiji Yamada ,  Tetsuo Iwaki

发明人： Toshiaki Harada ,  Eiji Yamada ,  Tetsuo Iwaki

IPC分类号： H04N5/335 ,  H04N5/341 ,  H04N5/343 ,  H04N5/349 ,  H04N5/355 ,  H04N5/357 ,  H04N5/363 ,  H04N5/372 ,  H04N5/378 ,  H04N5/46 ,  H04N7/01 ,  H04N7/015 ,  H04N9/04 ,  H04N9/09 ,  H04N11/06 ,  H04N11/24

CPC分类号： H04N7/0135 ,  H04N9/045 ,  H04N2209/049 ,  Y10S348/913

摘要： An imaging apparatus capable of outputting video signals in a plurality of formats is disclosed. The imaging apparatus includes: color separating optical system for separating incident image light into light beams of primary colors; first, second and third imaging portions respectively including a first, second and third set of pixels arranged at regular pitches in a first direction and in a second direction which is perpendicular to the first direction, the first, second and third imaging portion receiving each one of the light beams of primary colors separated by the color separating optical system and respectively accumulating them in the first, second and third set of pixels, as an image signal, the first set of pixels being shifted by 1/2 pitch with respect to the second and third set of pixels in the first direction and the second direction; an A/D convertor for converting the image signals of primary colors accumulated in the first, second, and third sets of pixels into digital signals; an interpolation processor for performing interpolation processing to the image signals of the primary colors which are converted into the digital signals in the A/D convertor, thereby doubling the number of pixels in the first direction and doubling the number of pixels in the second direction; and a pixel-number convertor for performing format converting processing for converting the image signals of primary colors which are interpolated in the interpolation processor into image signals based on any one of the plurality of formats.

摘要翻译： 公开了能够输出多种格式的视频信号的成像装置。 成像装置包括：用于将入射图像光分离成原色光的分色光学系统; 第一，第二和第三成像部分分别包括以垂直于第一方向的第一方向和第二方向布置成规则间距的第一，第二和第三组像素，第一，第二和第三成像部分接收每一个 由分色光学系统分离并分别在第一，第二和第三组像素中分别存储的原色光束作为图像信号，第一组像素移动+ E，fra 1/2 + 相对于第一方向和第二方向上的第二和第三像素组的EE间距; A / D转换器，用于将在第一，第二和第三组像素中累积的原色的图像信号转换成数字信号; 内插处理器，用于对在A / D转换器中被转换为数字信号的原色图像信号执行内插处理，从而使第一方向上的像素数倍增，并使第二方向上的像素数倍增; 以及像素数转换器，用于执行格式转换处理，用于基于多种格式中的任何一种将内插处理器中插入的原色图像信号转换为图像信号。

公开(公告)号：US6108036A

公开(公告)日：2000-08-22

申请号：US823976

申请日：1997-03-25

申请人： Toshiaki Harada ,  Tetsuo Iwaki ,  Eiji Yamada ,  Tohru Okuda

发明人： Toshiaki Harada ,  Tetsuo Iwaki ,  Eiji Yamada ,  Tohru Okuda

IPC分类号： G02B27/46 ,  H04N5/225 ,  H04N5/232 ,  H04N5/243 ,  H04N5/335 ,  H04N5/349 ,  H04N5/357 ,  H04N5/378

CPC分类号： H04N3/1587 ,  H04N5/2254 ,  H04N5/2259

摘要： A single imaging apparatus is adapted to pick up both a motion image and a still image. In an imaging apparatus 1, image light from an object is separated into multiple monochromatic image light components by an optical system 3 and then imaged by an imaging means 4 for generation of an original image signal. The imaging apparatus 1 switches an imaging mode depending upon an output mode. The optical system 3 switches the sate of a variable spatial filter 18 depending upon an imaging mode thereby changing an effect for limiting the spatial frequency. In an output mode for motion images, an interpolative synthesizer circuit 7 generates the output image signal from a single original image signal. In an output mode for still image, an image shift mechanism 19 parallely shifts the optical axis of the incoming image light while the imaging means captures the original image light multiple times so that an output image is produced from these original image signals. An amount of attenuation of the filter 18 in the output mode for motion images is greater than that for an equivalent spatial frequency component in the output mode for still image.

摘要翻译： 单个成像装置适于拾取运动图像和静止图像。 在成像装置1中，来自物体的图像光被光学系统3分离成多个单色图像光分量，然后由成像装置4成像以产生原始图像信号。 成像装置1根据输出模式切换成像模式。 光学系统3根据成像模式切换可变空间滤波器18的状态，由此改变用于限制空间频率的效果。 在运动图像的输出模式中，内插合成器电路7从单个原始图像信号生成输出图像信号。 在静止图像的输出模式中，图像偏移机构19平行地移动入射图像光的光轴，同时成像装置多次捕获原始图像光，从而从这些原始图像信号产生输出图像。 用于运动图像的输出模式中的滤波器18的衰减量大于用于静止图像的输出模式中的等效空间频率分量的衰减量。

公开(公告)号：US5414719A

公开(公告)日：1995-05-09

申请号：US46853

申请日：1993-04-15

申请人： Tetsuo Iwaki ,  Toshihisa Tanaka ,  Eiji Yamada

发明人： Tetsuo Iwaki ,  Toshihisa Tanaka ,  Eiji Yamada

IPC分类号： G06F7/72 ,  G06F11/10 ,  H03M13/01 ,  H03M13/15

CPC分类号： G06F7/724 ,  G06F11/10 ,  H03M13/01 ,  H03M13/151

摘要： An operating circuit of a Galois Field for executing an operation of the Galois field efficiently and rapidly includes an operating circuit (11) for receiving two elements of a Galois field, for performing an addition or a multiplication of the two elements, and for outputting a first operational result, an operating circuit (12) for receiving another two elements of the Galois field, for performing an addition or a multiplication of another two elements, and for outputting a second operational result, an operating circuit (13) for performing an addition of the first operational result and the second operational result on the Galois field, and for outputting a third operational result, a multiplexer (14) for selecting and one of the first operational result and the third operational result, and for outputting a selected result, a multiplexer (15) for selecting any one of the second operational result and the third operational result, and for outputting the selected result, a flag-decision circuit (18) for determining the first operational result and the second operational result as well as the third operational result.

摘要翻译： 用于高效地和快速地执行Galois场的操作的伽罗瓦域的操作电路包括用于接收Galois域的两个元件的操作电路（11），用于执行两个元件的相加或相乘，并且用于输出 第一操作结果，用于接收伽罗瓦域的另外两个元件的操作电路（12），用于执行另外两个元件的相加或乘法，并且用于输出第二操作结果;用于执行加法的操作电路（13） 的第一操作结果和第二操作结果，并且用于输出第三操作结果;多路复用器（14），用于选择第一操作结果和第一操作结果和第三操作结果之一，并且用于输出所选择的结果; 用于选择第二操作结果和第三操作结果中的任何一个的多路复用器（15），并且用于输出所选择的结果，标志判定 离子电路（18），用于确定第一操作结果和第二操作结果以及第三操作结果。