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1. 发明专利

DE4002670C2 未知
公开(公告)号：DE4002670C2
公开(公告)日：1993-06-24
申请号：DE4002670
申请日：1990-01-30
申请人： HITACHI, LTD., TOKIO/TOKYO, JP , HITACHI VIDEO ENGINEERING, INC., YOKOHAMA, KANAGAWA, JP
发明人： INUZUKA, TATSUHIRO, KAMAKURA, KANAGAWA, JP , MANO, HIROYUKI, YOKOHAMA, KANAGAWA, JP , FUJISAWA, KAZUHIRO, FUJISAWA, KANAGAWA, JP , KONUMA, SATOSHI, YOKOHAMA, KANAGAWA, JP , KINUGAWA, KIYOSHIGE, CHIBA, JP , TSUNEKAWA, SATORU, TACHIKAWA, TOKIO/TOKYO, JP
IPC分类号： G02F1/133 , G09G3/20 , G09G3/36 , H04N3/12
摘要： A liquid crystal display apparatus including a liquid crystal panel of a plurality of dots, an X drive circuit for supplying display information of at least one line to the liquid crystal panel and a Y drive circuit for selecting one-dot data for each line of the liquid crystal panel, the X drive circuit and the Y drive circuit enabling energization of the liquid crystal panel. A plurality of memories are provided for receiving a plurality of bits of information data and for storing at least M dot display information data so as to enable display of a respective line of the liquid crystal panel, M being an integer. A selection arrangement is provided for selecting one bit of display information dat out of a plurality of bits of display information data to be read out of the memories and a selection controller is provided for specifying the one bit of display information data to be selected by the selection arrangement so as to enmable read out of each one bit of the plurality of bits in a predetermined time sequence corresponding to one horizontal perioid divided by N for display, where N is an integer of at least two. The X drive circuit is supplied one dot information at leat two times during the one horizontal period so that one dot is controlled for display at least two times during the one horizontal period to enable multi-level tone display.

2. 发明授权

EP0719040B1 Image pickup apparatus and method for controlling exposure time thereof 失效
标题翻译：图像拾取装置和曝光时间控制的方法
公开(公告)号：EP0719040B1
公开(公告)日：2001-10-31
申请号：EP96101932.0
申请日：1990-03-29
申请人： Hitachi, Ltd. , HITACHI VIDEO ENGINEERING, INC.
发明人： Imaide, Takuya , Kinugasa, Toshiro , Yamamoto, Naoki Daini-yoshihara-haitsu 25 , Kurashige, Tomoyuki , Tarumizu, Hiroyuki
IPC分类号： H04N5/238
CPC分类号： H04N5/2352

3. 发明授权

EP0393401B1 Method and apparatus for controlling and stabilizing the position of an iris diaphragm in a video camera, using two successive control loops 失效
标题翻译：通过两个连续的控制回路的装置中的摄像机调整和稳定的光圈调整的方法和装置
公开(公告)号：EP0393401B1
公开(公告)日：1997-10-22
申请号：EP90106010.3
申请日：1990-03-29
申请人： HITACHI, LTD. , HITACHI VIDEO ENGINEERING, INC.
发明人： Imaide, Takuya , Kinugasa, Toshiro , Yamamoto, Naoki , Kurashige, Tomoyuki , Tarumizu, Hiroyuki
IPC分类号： H04N5/238
CPC分类号： H04N5/2352

4. 发明公开

EP0719040A3 Image pickup apparatus and method for controlling the exposure time of the image pickup apparatus 失效
标题翻译：成像装置和曝光时间控制的方法
公开(公告)号：EP0719040A3
公开(公告)日：1997-10-01
申请号：EP96101932.0
申请日：1990-03-29
申请人： HITACHI, LTD. , HITACHI VIDEO ENGINEERING, INC.
发明人： Imaide, Takuya , Kinugasa, Toshihiro , Yamamoto, Naoki , Kurashige, Tomoyuki , Tarumizu, Hiroyuki
IPC分类号： H04N5/238
CPC分类号： H04N5/2352
摘要： This is a division out of EP-(A)- 0 393 401. The figure shows a block diagram of a video camera in which automatic exposure (AE) functions can be attained such as "Iris Priority AE Mode" (light quantity controlled by the shutter speed) and "Shutter Priority AE Mode" (light quantity controlled by the iris). The video camera includes a circuit (12) for providing a voltage corresponding to a current value of the iris, a circuit (16, 19, 20) for generating a voltage corresponding to a desired iris value, a circuit (18) for comparing the two voltages, and a circuit (7) for controlling the iris based on the result of the comparison so as to keep the iris at the desired value. The output signal of the image pickup device (1) is amplified (2) and the signal quantity is determined (4) before it is compared (17) with a reference voltage (5). The output of the comparator (17) is connected to the circuit (16) setting the desired iris value, and is also connected to an exposure time changing circuit (21) which controls the exposure time to be established by the image pickup driver (22). This driver (22) serves to change signal sweep-out timing in increments/decrements of one horizontal scanning period (1H) to set the exposure start time. The exposure end time is changeable in increments/decrements of shorter than 1H (fine tuning

5. 发明授权

EP0347720B1 Apparatus and method for gray scale display 失效
标题翻译：方法和装置用于与灰度显示的显示。
公开(公告)号：EP0347720B1
公开(公告)日：1995-08-30
申请号：EP89110678.3
申请日：1989-06-13
申请人： HITACHI, LTD. , HITACHI VIDEO ENGINEERING, INC.
发明人： Nishioka, Kiyokazu Apt.No.116 , Mano, Hiroyuki , Tsuchiya, Nobuo
IPC分类号： G09G1/14
CPC分类号： G09G3/3611 , G09G3/2018 , G09G5/028

6. 发明公开

EP0442525A3 Magnetic recording and reproducing apparatus 失效
公开(公告)号：EP0442525A3
公开(公告)日：1993-05-12
申请号：EP91102188.9
申请日：1991-02-15
申请人： HITACHI, LTD. , HITACHI VIDEO ENGINEERING, INC.
发明人： Takeda, Hidekazu , Iwakura, Masao , Masuoka, Nobuo , Itou, Tetsuo, Rm. A201 Hitachi Shimokurataryo , Nishida, Ikuo , Yamashita, Yoshiharu , Ohmori, Motonori , Iyota, Koji
IPC分类号： G11B15/665
CPC分类号： G11B15/6656 , G11B15/61
摘要： A tape running guide and tape loading mechanism for magnetic tape recording and reproducing device allows a cylinder drum (10) carrying magnetic heads to minimize its size by employing a three-dimensional loading system is employed in which a level of tape fed to a cylinder drum is made high and that of the tape leaving the cylinder drum is made low. A tape guide system includes, in the tape supply side, at least a first, movable slanted pin (6) and a first, movable tape height regulation guide roller (7) for deriving the tape from an open space of a magnetic tape cassette and winding the tape on the cylinder drum, a second slanted pin (9) and a second tape height regulation guide roller (8) and a third, movable guide pin for winding the tape on the second slanted pin are provided and, in the tape returning side, a fourth, movable slanted pin (13) and a fourth, movable tape height regulation guide roller for deriving the magnetic tape from the open space of the tape cassette and winding the magnetic tape on the cylinder drum, a fifth, movable slanted pin and a pinch roller which are to be derived from the open space of the tape cassette and a capstan arranged outside the open space. These movable tape guide members are movable on a common area in time-shared manner to thereby make the loading mechanism compact.

7. 发明公开

EP0411440A2 Camera system and camera recording system 失效
标题翻译： Kamerasystem und Kameraaufzeichnungssysteme。
公开(公告)号：EP0411440A2
公开(公告)日：1991-02-06
申请号：EP90114159.8
申请日：1990-07-24
申请人： HITACHI, LTD. , HITACHI VIDEO ENGINEERING, INC.
发明人： Yoshioka, Atsushi , Watatani, Yoshizumi , Azuma, Nobuo , Otsubo, Tadasu , Matsuo, Shuichi
IPC分类号： H04N5/335 , H04N5/92
CPC分类号： H04N9/7925 , H04N5/23293 , H04N5/335 , H04N9/79 , H04N9/7921 , H04N9/83
摘要： Herein disclosed is a camera recording system which is capable of selectively imaging an image having an aspect ratio - a ratio between the horizontal length and vertical length of a frame - of 4 : 3 as in the NTSC system and an image having a horizontally longer aspect ratio of m : n (m/n > 4/3) than the former ratio. Further disclosed is a usable method which allows the user to take only one turn for selecting the aspect ratio. The method is represented by three kinds: one using a lens unit; another using the scanning range of an image tube; and still another using an expander circuit. What is required of the user is only one turn of switching the lenses or switches, and the remaining necessary switching operations are automated.
摘要翻译：这里公开了一种照相机记录系统，其能够选择性地成像具有如NTSC制中那样具有纵横比 - 帧的水平长度和垂直长度之间的比例为4：3的图像的图像，以及具有水平更长方面的图像 m：n（m / n> 4/3）的比率。进一步公开的是一种可用的方法，其允许用户仅选择一匝来选择宽高比。该方法由三种：一种使用透镜单元; 另一个使用图像管的扫描范围; 还有另一个使用扩展器电路。用户需要的只是转动镜头或开关的一圈，并且剩余的必要的切换操作是自动化的。

8. 发明公开

EP0402848A2 Liquid crystal display apparatus and method of performing liquid crystal display 有权
标题翻译： Flüssigkristall-Anzeige und Methode zu deren Steuerung。
公开(公告)号：EP0402848A2
公开(公告)日：1990-12-19
申请号：EP90111076.7
申请日：1990-06-12
申请人： HITACHI, LTD. , HITACHI VIDEO ENGINEERING, INC.
发明人： Mano, Hiroyuki, Hitachi Isogoryo , Inuzuka, Tatsuhiro, Hitachi Kamakuraryo , Konuma, Satoshi, Hitachi Shimokurataryo , Fujisawa, Kazuhiro, Hitachi Jonan Haitsu 101
IPC分类号： G09G3/36
CPC分类号： G09G3/3611 , G09G3/2018 , G09G3/2051 , G09G3/2055 , H04N3/127
摘要： A liquid crystal display apparatus in which color display information is converted into information about luminance of liquid crystal display used for driving liquid crystal so as to provide a liquid crystal display. The apparatus comprises a decider unit (6) for deciding whether the color display information takes a display form pursuant to the dither method, and a converter unit (8, 10, 12, 14) for converting the color display information into liquid crystal luminance display information in accordance with a frame base thin-out method corresponding to the color display information when the decision results indicate that the color display information takes a display form pursuant to the dither method but for converting the color display information in accordance with a dot base thin-out method when the decision results are negative.
摘要翻译：一种液晶显示装置，其中彩色显示信息被转换成关于用于驱动液晶的液晶显示器的亮度的信息，以提供液晶显示器。该装置包括用于根据抖动方法判定彩色显示信息是否采用显示形式的判定单元（6），以及用于将彩色显示信息转换为液晶亮度显示的转换器单元（8,10,12,14）当判定结果指示彩色显示信息根据抖动方法采取显示形式时，根据与彩色显示信息相对应的帧基础薄化方法的信息，而用于根据点基础薄转换彩色显示信息 -out方法当决策结果为负。

9. 发明公开

EP0342511A3 Aperture correction circuit 失效
标题翻译：孔径校正电路
公开(公告)号：EP0342511A3
公开(公告)日：1990-07-25
申请号：EP89108431.1
申请日：1989-05-10
申请人： HITACHI, LTD. , HITACHI VIDEO ENGINEERING, INC.
发明人： Takahashi, Satoshi , Takagi, Eiji , Ueki, Yukinari , Ohki, Hideaki , Kamogawa, Koji
IPC分类号： H04N5/208
CPC分类号： H04N5/208
摘要： The aperture correction circuit of the present invention comprises a preshoot signal generator (4) which generates the preshoot signal of the edge part of a video signal, an overshoot signal generator (5) which generates the overshoot signal of the edge part of the video signal, a shoot signal composition circuit (88) which adds the preshoot signal and the overshoot signal at an addition ratio corresponding to a control signal, thereby to deliver the resulting signal as a correcting shoot signal, and an adder (85) which adds the video signal and the correcting shoot signal, thereby to deliver the resulting signal as an output, wherein the shoot signal composition circuit is supplied as the control signal with a signal which changes according to the input video signal, such as the differentiated signal of the input video signal. Thus, the ratio between the preshoot signal and the overshoot signal is dynamically changed according to the input signal, so that an image quality can be adjusted according to the input video signal.

10. 发明公开

EP0358918A3 Display system 失效
标题翻译：显示系统
公开(公告)号：EP0358918A3
公开(公告)日：1990-06-27
申请号：EP89114261.4
申请日：1989-08-02
申请人： HITACHI, LTD. , HITACHI VIDEO ENGINEERING, INC.
发明人： Nishioka, Kiyokazu , Suzuki, Akinori , Tsuchiya, Nobuo , Konuma, Satoshi Hitachi-Shimokurata-ryo B No.202 , Jinushi, Masahiro
IPC分类号： G09G1/28
CPC分类号： G09G5/06
摘要： A display system comprises a color look-up table for storing therein color data which specify a color or a gray scale of data to be displayed, and a display unit having a number of displayable colors or gray scales smaller than the number of colors or gray scales which can be specified by color data stored in the color look-up table. The color look-up table (8) includes a color look-up table (81) for CPU for storing therein first color data supplied from a central processing unit (CPU) (6), a color data conversion circuit (85) for converting the first color data into second color data having a number of colors or gray scales equal to the number of displayable colors or gray scales of the display unit (7), and another color look-up table (82) for display for storing therein the second color data supplied from the color data conversion circuit (85). The display unit (7) displays thereon data in a color or a gray scale specified by the second color data read out from the color look-up table (82) for display. The CPU (6) reads out first color data necessary for data processing from the color look-up table (81) for CPU.
摘要翻译：一种显示系统包括一个彩色查询表，用于在其中存储指定要显示的数据的颜色或灰度的彩色数据，以及一个显示单元，其具有多个可显示颜色或灰度，其数量小于颜色数量或灰度可以通过存储在颜色查询表中的颜色数据来指定尺度。该颜色查找表（8）包括用于CPU存储从中央处理单元（CPU）（6）提供的第一颜色数据的颜色查找表（81），用于转换的颜色数据转换电路（85）将第一颜色数据转换为具有等于显示单元（7）的可显示颜色或灰度数量的颜色或灰度数量的第二颜色数据，以及用于显示的另一颜色查找表（82），用于在其中存储从颜色数据转换电路（85）提供的第二颜色数据。显示单元（7）在其上显示由从颜色查找表（82）读出的第二颜色数据指定的颜色或灰度等级的数据以进行显示。 CPU（6）从用于CPU的颜色查找表（81）中读出数据处理所需的第一颜色数据。

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