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1. 发明授权

US08559236B2 Nonvolatile semiconductor memory device which performs improved erase operation 有权
公开(公告)号：US08559236B2
公开(公告)日：2013-10-15
申请号：US13052158
申请日：2011-03-21
申请人： Jun Nakai , Noboru Shibata
发明人： Jun Nakai , Noboru Shibata
IPC分类号： G11C16/04
CPC分类号： G11C16/16 , G11C16/14 , G11C16/26 , G11C16/344 , G11C16/3445
摘要： According to one embodiment, a nonvolatile semiconductor memory device includes a memory cell array and a control unit. The memory cell array includes a plurality of memory cells arranged in a matrix. The control unit erases data of the memory cells. The control unit interrupts the erase operation of the memory cells and holds an erase condition before the interrupt in accordance with a first command during the erase operation, and resumes the erase operation based on the held erase condition in accordance with a second command.

2. 发明授权

US08654173B2 Optical scanning apparatus and image forming apparatus 有权
标题翻译：光学扫描装置和图像形成装置
公开(公告)号：US08654173B2
公开(公告)日：2014-02-18
申请号：US12955433
申请日：2010-11-29
申请人： Issei Nakano , Nobuhiro Fukuma , Jun Nakai
发明人： Issei Nakano , Nobuhiro Fukuma , Jun Nakai
IPC分类号： B41J27/00
CPC分类号： G03G15/326 , G02B26/125 , G03G15/0435 , G03G21/20 , G03G2215/0404 , H04N1/00519 , H04N1/00986 , H04N1/113
摘要： A housing (30) includes a base portion (30a) for installation of an optical beam emission unit (31), a light guiding unit (35a-39a, 35b-39b), and a deflection unit (32, 33), and a cover portion (30b, 30c) that includes an indented heat emission channel (30b1, 30c1) that transmits heat in an inner portion of the housing (30) to a fluid.
摘要翻译：壳体（30）包括用于安装光束发射单元（31）的基部（30a），导光单元（35a-39a，35b-39b）和偏转单元（32,33），以及覆盖部分（30b，30c），其包括在壳体（30）的内部部分中将热量传递到流体的凹陷式散热通道（30b1,30c1）。

3. 发明申请

US20070159657A1 Image forming apparatus 审中-公开
标题翻译：图像形成装置
公开(公告)号：US20070159657A1
公开(公告)日：2007-07-12
申请号：US11649195
申请日：2007-01-03
申请人： Issei Nakano , Jun Nakai
发明人： Issei Nakano , Jun Nakai
IPC分类号： G06F15/00
CPC分类号： H04N1/40037
摘要： An input dither pattern determiner divides an input dither image to plural blocks, and determines an input dither pattern for each block. An output dither image portion converts the input dither pattern for each block to an output dither pattern. A reference emission time determiner portion determines a reference emission time for each block based on dark electric potential distribution and intermediate sensitivity distribution of a photoconductive drum, a light intensity distribution of a laser beam in a main scanning direction, and the output dither pattern. An area emission time calculator determines area emission time for each area based on a reference emission time for each block. An actual emission time calculator adjusts emission time for each area so that differences between reference emission times of blocks adjacent one another in the main scanning direction become a predetermined value or lower, and calculates actual emission time for each area.
摘要翻译：输入抖动图案确定器将输入抖动图像分割成多个块，并且确定每个块的输入抖动图案。输出抖动图像部分将每个块的输入抖动图案转换为输出抖动图案。参考发光时间确定器部分基于感光鼓的暗电位分布和中间灵敏度分布，激光束在主扫描方向上的光强度分布和输出抖动图案来确定每个块的参考发射时间。区域发射时间计算器基于每个块的参考发射时间来确定每个区域的区域发射时间。实际发光时间计算器调整每个区域的发射时间，使得在主扫描方向上彼此相邻的块的参考发射时间之间的差异变为预定值或更低，并且计算每个区域的实际发射时间。

4. 发明授权

US07019767B2 Image forming apparatus 失效
标题翻译：图像形成装置
公开(公告)号：US07019767B2
公开(公告)日：2006-03-28
申请号：US10721716
申请日：2003-11-25
申请人： Tadashi Ohba , Jun Nakai
发明人： Tadashi Ohba , Jun Nakai
IPC分类号： B41J27/00
CPC分类号： B41J2/45
摘要： When intending gradational representation of each of the dots composing the image by changing the amount of light emission of each of the dots composing an image by changing the amount of light emission of said light emitting diode, the magnitude of each of the dots becomes reduced resulting in unstable reproducibility of dot. This causes damage in the regularity of the distribution of image density and the graininess of the printed image increases. The invention aims to provide an image forming apparatus which can decrease granularity (graininess) by simple and inexpensive construction by defocusing on the photo conductor the light ray passing through the lens array of the exposing device in the image forming apparatus in accordance with the percentage of the luminous dots changed in the amount of light emission among the dots composing the image. This prevents the occurrence of irregular density distribution in the latent image on the photo conductor drum. As a result, the graininess of the printed image is decreased.
摘要翻译：当通过改变所述发光二极管的发光量来改变构成图像的每个点的发光量来构成图像的每个点的等级表示时，每个点的大小变小，导致在点不稳定的重现性。这导致图像密度分布的规律性受损，并且印刷图像的颗粒度增加。本发明旨在提供一种图像形成装置，其可以通过简单且便宜的构造来减小颗粒度（颗粒度），其通过使光导体上的光线照射通过图像形成装置中的曝光装置的透镜阵列的光线，在构成图像的点中，发光点发光量发生变化。这防止在光导体鼓上的潜像中出现不规则的浓度分布。结果，打印图像的颗粒度降低。

5. 发明申请

US20050024468A1 Exposure unit and image forming apparatus provided with the exposure unit 审中-公开
标题翻译：设置有曝光单元的曝光单元和图像形成装置
公开(公告)号：US20050024468A1
公开(公告)日：2005-02-03
申请号：US10855792
申请日：2004-05-28
申请人： Tadashi Ohba , Jun Nakai
发明人： Tadashi Ohba , Jun Nakai
IPC分类号： B41J2/44 , B41J2/385 , B41J2/45 , B41J2/455 , G06K15/12 , H04N1/036
CPC分类号： B41J2/45 , G06K15/1209 , G06K15/1247
摘要： The object is to provide an exposure unit capable of forming an image without inconsistencies in density even when resolution in subscanning direction is N times larger than that in the main scanning direction. An image forming apparatus is provided with an exposure unit having an LED array with LED chips arranged linearly in the main scanning direction of a photosensitive body, and a control means for performing drive control of LED array on the basis of the drive current according to the drive data of which the electric current for lighting each LED device is corrected in accordance with variations in light amount, LED devices being lighted in a range of 1˜N times (N is a positive integer) for pixels aligning in subscanning direction per one scanning line to form latent dot images on the photosensitive body, wherein an electrostatic latent image is formed on the photosensitive body by performing the N times lighting control of LED devices so that the light intensity is corrected on the basis of the same correction current value based on the correction value calculated from the area of the beam emitted from each LED in accordance with tone density.
摘要翻译：本发明的目的是提供即使在副扫描方向上的分辨率比主扫描方向的N倍大的情况下也能够形成图像而不产生不一致的曝光单元。图像形成装置设置有具有LED阵列的曝光单元，LED阵列具有在感光体的主扫描方向上线性布置的LED芯片，以及控制装置，用于根据驱动电流进行LED阵列的驱动控制根据光量的变化校正用于点亮各LED装置的电流的驱动数据，对于每次扫描的副扫描方向对齐的像素，在1〜N倍（N为正整数）的范围内点亮的LED装置线在感光体上形成潜像图像，其中通过执行LED装置的N次点亮控制在感光体上形成静电潜像，使得基于相同的校正电流值来校正光强度，基于从根据色调密度从每个LED发射的光束的面积计算的校正值。

6. 发明授权

US07034858B2 LED array exposure device, controlling method thereof, and image forming apparatus using the same 失效
标题翻译： LED阵列曝光装置及其控制方法以及使用其的图像形成装置
公开(公告)号：US07034858B2
公开(公告)日：2006-04-25
申请号：US10691539
申请日：2003-10-24
申请人： Tadashi Oba , Jun Nakai
发明人： Tadashi Oba , Jun Nakai
IPC分类号： B41J2/435
CPC分类号： H04N1/4015 , G06K15/1209 , G06K15/1247 , H04N1/2346 , H04N1/295
摘要： Corrected driving currents for a low gray level and a high gray levels are obtained respectively from a standard driving current by incorporating a beam spot area correction coefficient for variations of a beam spot area formed by a light beam emitted from a light-emitting element and transmitted through a lens array; an influence for a low gray level and a high gray level caused by one of a screen angle of pixel, a sensitivity of photoconductor, a surface temperature of photoconductor, and a developing bias voltage; and a light quantity correction coefficient. A driving current for driving the light-emitting element is obtained by using linear interpolation from the two corrected driving currents.
摘要翻译：分别从标准驱动电流获得用于低灰度级和高灰度级的校正驱动电流，通过结合用于由从发光元件发射的光束形成的束斑区域的变化并发射的束斑区域校正系数通过镜头阵列; 由像素的屏幕角度，感光体的灵敏度，感光体的表面温度和显影偏压等中的一个引起的对低灰度级和高灰度级的影响; 和光量校正系数。通过使用来自两个校正的驱动电流的线性插值来获得用于驱动发光元件的驱动电流。

7. 发明授权

US07017090B2 Semiconductor module including semiconductor memory device shiftable to test mode as well as semiconductor memory device used therein 有权
公开(公告)号：US07017090B2
公开(公告)日：2006-03-21
申请号：US10120574
申请日：2002-04-12
申请人： Shunsuke Endou , Takayuki Miyamoto , Jun Nakai
发明人： Shunsuke Endou , Takayuki Miyamoto , Jun Nakai
IPC分类号： G11C29/00
CPC分类号： G11C7/222 , G11C7/22 , G11C11/401 , G11C11/4076 , G11C29/46
摘要： A semiconductor module includes a plurality of semiconductor memory devices, a registered buffer, a PLL circuit and a test mode entry circuit. The test mode entry circuit receives a signal MRS, a bank address signal and an address signal from the registered buffer, directly and externally receives a signal formed of a high voltage level higher than the voltage level in a normal operating range, generates a deactivating signal for deactivating the PLL circuit and a test mode shift signal formed of the high voltage level, applying the deactivating signal to the PLL circuit, and applying the test mode shift signal to the plurality of semiconductor memory devices. Consequently, the plurality of semiconductor memory devices included in the module can be shifted to the test mode in the modular state.

8. 发明授权

US06249462B1 Data output circuit that can drive output data speedily and semiconductor memory device including such a data output circuit 失效
标题翻译：能够快速驱动输出数据的数据输出电路和包括这种数据输出电路的半导体存储器件
公开(公告)号：US06249462B1
公开(公告)日：2001-06-19
申请号：US09557867
申请日：2000-04-24
申请人： Koji Tanaka , Jun Nakai , Yasuhiko Tsukikawa , Mikio Asakura
发明人： Koji Tanaka , Jun Nakai , Yasuhiko Tsukikawa , Mikio Asakura
IPC分类号： G11C1604
CPC分类号： G11C7/1069 , G11C7/1051 , G11C11/4093
摘要： An output buffer includes a pull up transistor of N type field effect to charge a data output terminal by an external power supply potential Vdd in a high level data output operation, and a pull down transistor of N type field effect to discharge the data output terminal to a ground potential Vss in a low level data output operation. The substrate potential of the pull up NMOS transistor is set to a potential of a level higher than the normal case in a high level data output operation. As a result, the output buffer can speedily charge the data terminal in a high level data output operation.
摘要翻译：输出缓冲器包括N型场效应的上拉晶体管，用于在高电平数据输出操作中由外部电源电位Vdd对数据输出端子充电;以及N型场效应的下拉晶体管，以对数据输出端子到低电平数据输出操作中的地电位Vss。在高电平数据输出操作中，上拉NMOS晶体管的衬底电位被设置为高于正常情况的电平。结果，输出缓冲器可以在高电平数据输出操作中对数据终端进行快速充电。

9. 发明授权

US06226208B1 Semiconductor memory device with hierarchical control signal lines 失效
标题翻译：具有分层控制信号线的半导体存储器件
公开(公告)号：US06226208B1
公开(公告)日：2001-05-01
申请号：US09455471
申请日：1999-12-06
申请人： Jun Nakai , Yutaka Ikeda
发明人： Jun Nakai , Yutaka Ikeda
IPC分类号： G11C708
CPC分类号： G11C7/18 , G11C7/06 , G11C7/12 , G11C11/4094 , G11C11/4097
摘要： Only one sense signal line for driving a sense amplifier is arranged in each sense amplifier band. Each sub-array is provided with a sub-sense signal generator for generating two sub-sense signals in response to a main sense signal sent from one main sense signal line. The sub-sense signal is applied to the plurality of sense amplifiers corresponding to each sub-array. Since only one main sense signal line is arranged in each sense amplifier, a layout area is reduced. Preferably, a transistor of a first inverter in the sub-sense signal generator is smaller in size than a transistor of a final inverter. Thereby, a significant delay of the sub-sense signal does not occur in a position remote from a source of the main sense signal.
摘要翻译：在每个读出放大器频带中仅设置用于驱动读出放大器的一个感测信号线。每个子阵列设置有子感测信号发生器，用于响应于从一个主感测信号线发送的主感测信号而产生两个子感测信号。子感测信号被施加到对应于每个子阵列的多个读出放大器。由于在每个读出放大器中仅设置一个主感测信号线，所以布局面积减小。优选地，子感测信号发生器中的第一反相器的晶体管的尺寸小于最终逆变器的晶体管。因此，在远离主感测信号的源的位置不会发生子感测信号的显着延迟。

10. 发明授权

US5123043A Radio communication method and system 失效
标题翻译：无线电通信方法与系统
公开(公告)号：US5123043A
公开(公告)日：1992-06-16
申请号：US357028
申请日：1989-05-25
申请人： Mitsuo Higashiyama , Naoto Iwahashi , Takushi Kunihiro , Jun Nakai
发明人： Mitsuo Higashiyama , Naoto Iwahashi , Takushi Kunihiro , Jun Nakai
IPC分类号： H04B7/26 , H04B1/40 , H04M1/733 , H04W4/06 , H04W88/02
CPC分类号： H04M1/733
摘要： A method and system for radio communication between at least one parent communication unit and a plurality of slave communication units. A slave communication unit transmits an automatic answer signal in response to an incomming call receipt signal transmitted from the parent communication unit. When one of the slave communication units makes a called-person's answer to the incomming call receipt signal, it transmits a called-person's answer signal. If interference occurs between the automatic and called-person's answer signals, the parent communication unit provides a command, causing the slave communication units to stop the automatic and called-person's answer signals and permits the slave communication unit which transmits the called-person's answer signal to communicate with the parent communication unit.

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