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    • 2. 发明申请
    • METHOD AND SYSTEM FOR CONTROLLING TRAIN BY RADIO
    • 用无线电遥控火车的方法和系统
    • WO1998041435A1
    • 1998-09-24
    • PCT/JP1997000916
    • 1997-03-19
    • HITACHI, LTD.YOKOSUKA, YasushiMAEKAWA, KeijiKAWABATA, AtsushiFUJIWARA, Michio
    • HITACHI, LTD.
    • B61L23/14
    • B61L3/125B61L27/0038H04L63/0428H04L67/04H04L67/12H04L67/125H04L69/329H04W84/00
    • A radio communication system for controlling train which can recognize the state of the transmission line of radio communication and easily discriminate equipment faults by utilizing the synchronous state of spread-spectrum communication by perceiving the synchronizing technique of the spread-spectrum communication. In addition, a system which uses controls signals of a plurality of cryptographic systems for ordinary communication and unified signals for emergency communication by providing a plurality of enciphered keys and emergency codes for emergency communication for ground stations and on-vehicle stations and obtaining agreement between transmission and reception by using protocol signals. Moreover, system control system which can delete a train after operation from objects to be controlled with a high degree of security by using a dynamic ID code which is given when a train registering protocol is implemented.
    • 一种用于控制无线电通信系统,其能够识别无线电通信的传输线路的状态,并通过利用扩展频谱通信的同步技术利用扩展频谱通信的同步状态容易地识别设备故障。 另外,通过提供多个加密密钥和用于地面站和车载站的紧急通信的紧急代码,并获得传输之间的一致性,使用用于普通通信的多个密码系统的控制信号和用于紧急通信的统一信号的系统 并通过使用协议信号进行接收。 此外,通过使用在实施列车登记协议时给出的动态ID码,可以在高度安全性的对象之后从运行中删除列车的系统控制系统。
    • 4. 发明申请
    • MULTI-PROJECTION IMAGE DISPLAY DEVICE
    • 多投影图像显示装置
    • WO1999031877A1
    • 1999-06-24
    • PCT/JP1997004588
    • 1997-12-12
    • HITACHI, LTD.YAMASAKI, MasamiTAKEDA, Haruo
    • HITACHI, LTD.
    • H04N05/74
    • H04N9/3147H04N9/12
    • A multi-projection image display device using a plurality of image projectors to form one picture on a screen, in which images projected from the projectors are smoothly connected with one another, so that seams of the images do not appear conspicuously. The image display device has projectors (0121, 0122, 0123, 0124) and a screen (0140) laid out in such a manner that maximum image projection ranges (0151, 0152, 0153, 0154) of the respective projectors ovelap the adjacent ranges. An image signal control unit (0110) for processing an image signal supplied from an external image input (0180) has, therein, a member for cutting out a partial image area dealt with by each projector, an image converting member for performing geometric transformation and local color correction of the partial image, and an arithmetic control member for controlling the image converting member on the basis of image information inputted from a screen state monitor camera (0130). With this structure, smoothing of the seams between the images may be realized simply by image signal processing, and precise adjustment of the optical system of the projectors becomes unnecessary.
    • 一种多投影图像显示装置,其使用多个图像投影仪在屏幕上形成一个图像,其中从投影仪投影的图像彼此平滑地连接,使得图像的接缝不显着。 图像显示装置具有投影仪(0121,0122,0123,0124)和以相应投影仪的最大图像投影范围(0151,022,033,0154)相邻范围的方式布置的屏幕(0140)。 一种用于处理从外部图像输入(0180)提供的图像信号的图像信号控制单元(0110),其中具有用于切割由每个投影仪处理的部分图像区域的部件,用于执行几何变换的图像转换部件, 部分图像的局部颜色校正,以及用于基于从屏幕状态监视摄像机(0130)输入的图像信息来控制图像转换部件的运算控制部件。 利用这种结构,可以简单地通过图像信号处理来实现图像之间的接缝的平滑化,并且不需要投影仪的光学系统的精确调整。
    • 6. 发明申请
    • METHOD FOR DEVELOPING SYSTEM BOARD
    • 开发系统板的方法
    • WO1999031608A1
    • 1999-06-24
    • PCT/JP1997004620
    • 1997-12-16
    • HITACHI, LTD.SHIMIZU, IsaoSATOU, Masayuki
    • HITACHI, LTD.
    • G06F17/50
    • G06F17/5022
    • A method for developing a system board using a semiconductor integrated circuit device, wherein the development of a system board is made before the development of the circuit device used for the system board is actually acquired by verifying (S31 and S32) whether or not the system board meets the target specifications of the system board by carrying out simulation using a device model in which the functions of the circuit device are modeled by using a function describing language in such a way that the target specifications of the circuit device can be met and the description of the state of the external interface of the circuit device defined conformable to the target specifications. Since the device model in which the functions of the circuit device are described meets the target specifications of the circuit device, the device model is simulated together with the description of the interface state, whether or not the circuit part related to the description of the state of the interface, namely, the interface with the circuit device is appropriate can be verified from the results of the simulation, and the design of the system board can be carried out before the completion of the development of the circuit device or the device is acquired.
    • 一种用于使用半导体集成电路器件开发系统板的方法,其中系统板的开发是在通过验证(S31和S32)是否实际获取用于系统板的电路器件的开发之前进行的(S31和S32) 通过使用使用功能描述语言来对电路装置的功能进行建模的装置模型进行仿真来实现系统板的目标规格,使得可以满足电路装置的目标规格和 描述符合目标规格的电路设备外部接口的状态。 由于描述了电路装置的功能的装置模型符合电路装置的目标规格,因此将与接口状态的描述一起模拟装置模型,无论电路部分是否与状态描述相关 的接口,即与电路设备的接口是合适的,可以从仿真结果中验证,并且系统板的设计可以在完成电路设备或设备的开发之前进行 。
    • 10. 发明申请
    • OPTICAL COMMUNICATION EQUIPMENT AND SYSTEM
    • 光通信设备和系统
    • WO1999016193A1
    • 1999-04-01
    • PCT/JP1997003337
    • 1997-09-19
    • HITACHI, LTD.KIMURA, YoshinobuMIYAO, MasanobuNAKAGAWA, KiyokazuSUGII, NobuyukiMARUIZUMI, Takuya
    • HITACHI, LTD.
    • H04B10/12
    • H04B10/564G02B6/3636G02B6/3652G02B6/4202H01S5/0262H01S5/0264H01S5/0425H01S5/1228H04B10/291H04B10/504
    • Optical signal communication equipment and optical communication system which can be suitably used even when the transmitting speed and capacity of information transmitted by using optical signals are increased. On the optical signal transmitting side, signal light is generated by causing induced emission in an active medium by supplying exciting light to the medium in accordance with transmitting signals. The exciting light is supplied to the active medium in such a way that naturally emitted light is made incident to a semiconductor layer and the component of the light having a specific wavelength is Bragg-reflected by modulating the refractive index of the semiconductor layer by impressing the voltage pulse correspdoning to the transmitting information upon the semiconductor layer, and then, the reflected light is supplied to the medium as the exciting light. Since the Bragg reflection and associated induced emission show excellent responsiveness to voltage signals having pulses widths of 1x10 second on shorter, an optical communication system which can transmit optical signals at a transmitting speed of up to 100 Gb/s can be realized.
    • 即使当使用光信号发送的信息的发送速度和容量增加时,也可适当使用的光信号通信设备和光通信系统。 在光信号发送侧,根据发送信号,通过向有源介质引起感应发射,向介质供给激励光,从而产生信号光。 将激发光以这样的方式提供给有源介质,使得自然发射的光入射到半导体层,并且具有特定波长的光的分量通过调制半导体层的折射率而被布拉格反射, 电压脉冲对应于半导体层上的发送信息,然后将反射光作为激发光提供给介质。 由于布拉格反射和相关联的感应发射对较短的具有1×10 -9秒的脉冲宽度的电压信号具有优异的响应性,因此可以实现以高达100Gb / s的发送速度传输光信号的光通信系统 。