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    • 2. 发明专利
    • SIGNAL LEVEL UNIFORMIZING CIRCUIT
    • JPS63139272A
    • 1988-06-11
    • JP28695186
    • 1986-12-01
    • NEC CORP
    • KAWAMURA MASAO
    • H03K5/1252G01S7/32G01S7/527G01S7/536H03K5/08
    • PURPOSE:To facilitate the discrimination between a signal and noise and to enhance the discrimination capacity of a target, by uniformizing a reflected signal different in a peak level to display the same. CONSTITUTION:The sonic wave from a transmitter is reflected from a target to be received by a receiver 1 and converted to an electric signal. Subsequently, said electric signal is converted to a digital receiving signal by an A/D converter circuit 2 to be sent to the first operation circuit 3 and converted to a positive envelope detection signal. This signal V is sent to the first memory circuit 5 to be stored therein and, at the same time, also sent to an average value circuit 4. The circuit 4 calculates the average level -V of a definite period containing the reflected signal in the signal sent from the circuit 3 to send the same to the second memory circuit 6 and calculates the average level -N only of the noise of the definite period to send the same to the third memory circuit 7. These data stored in three memory circuits are sent to the second operation circuit 8 to perform operations shown by formulae I, II, III. The calculated sample data of the formula III is displayed on a display circuit 9 to make it possible to uniformize a reflected signal level.
    • 3. 发明专利
    • Earth stratum searching apparatus
    • 地铁搜索设备
    • JPS59217180A
    • 1984-12-07
    • JP9285183
    • 1983-05-26
    • Nec Corp
    • KAWAMURA MASAO
    • G01V1/38
    • G01V1/3808
    • PURPOSE:To enable the presence of always useful information during a sampling period, by automatically changing the delay time of a sea bottom reflected wave. CONSTITUTION:A sound wave is transmitted to the sea bottom at constant intervals from a transmitter 22 and, at the same time, a trigger signal is supplied to a delay circuit 25 from a transmission part 21 while delay output is supplied to a sample circuit 24 as a sampling start trigger signal. On the other hand, the reflected sound wave at the sea bottom is supplied to the sample circuit 24 through receiver 23 and sample output is supplied to an A/D converter 26, a data collecting circuit 27 and a sea bottom detecting circuit 28. When the reflected wave is detected, a sea bottom reflected wave time measuring circuit 29 is operated by said output and the calculated time data is sent to a comparator circuit 30 to be compared with the time of setting circuits 31, 32 while a command signal is imparted to the delay circuit 25 from the command circuit 33 by the compared output at the time of a predetermined state to perform the adjustment of the delay time.
    • 目的:通过自动更改海底反射波的延迟时间,可以在采样周期内始终存在有用的信息。 构成:从发射机22以恒定间隔将声波发送到海底,并且同时从发射部21将触发信号提供给延迟电路25,同时将延迟输出提供给采样电路24 作为采样开始触发信号。 另一方面,海底反射的声波通过接收器23提供给采样电路24,并且采样输出被提供给A / D转换器26,数据采集电路27和海底检测电路28。 检测出反射波,通过所述输出操作海底反射波时间测量电路29,并且将所计算的时间数据发送到比较器电路30,以与设定电路31,32的时间进行比较,同时施加命令信号 通过在预定状态下的比较输出到命令电路33的延迟电路25执行延迟时间的调整。
    • 6. 发明专利
    • SONAR
    • JPS62163989A
    • 1987-07-20
    • JP576486
    • 1986-01-14
    • NEC CORP
    • KAWAMURA MASAO
    • G01S7/527G01S7/536
    • PURPOSE:To display the signal of an object so as to be capable of easily discriminating the same from other signals, by a method wherein a timewise phase difference signal is converted to a phase difference signal to frequency and discriminating the phase difference signal to frequency equal to or less than predetermined frequency and equal to or more than a predetermined level from the other signal as the signal of the object. CONSTITUTION:The signal received by a first receiver 1 and the signal received by a second receiver 2 are sent to a correlation device 3 and receive correlation processing to calculate a phase difference signal phi. This phase difference signal phi is the function of the incident angle phi of a plane wave and sent to a memory 4 to be temporarily stored therein as a time series signal. In the memory 4, a time width T is made constant while a delivery range is timewise shifted by T and repeatedly sent to a Fourier transformer 5 which in turn performs frequency analysis at every time series signal of the time width T. The frequency spectrum 105 of the output of the Fourier transformer 5 is sent, to a threshold value judge device 6. The threshold value judging device 6 judges whether the sent signal frequency spectrum has a value equal to or less than certain frequency and equal to or more than a predetermined level and outputs said spectrum.
    • 7. 发明专利
    • Additional information display system and additional information display method
    • 附加信息显示系统和附加信息显示方法
    • JP2005178938A
    • 2005-07-07
    • JP2003418959
    • 2003-12-17
    • Nec Corp日本電気株式会社
    • KAWAMURA MASAO
    • B42D15/10B65G61/00G06K19/077G06Q50/00G06Q50/28G06F17/60
    • PROBLEM TO BE SOLVED: To easily and semi-permanently store a message regarding a delivery article such as a gift or a selling article as new business of a deliverer or a company, and transmit it as a moving image. SOLUTION: An IC tag 330 is attached on the delivery article 110, and necessary information is stored. An image or voice of a delivery article sending person 100 is taken or directly inputted, and is accumulated in an information accumulation and delivery means of a computer 200 managed by the deliverer. After the delivery article 110 and the IC tag 330 are delivered to an delivery article receiving person 510, the delivery article receiving person 510 reads information from the IC tag 330 with the usage of a terminal 600. When URL of a homepage in the information displayed by the terminal 660 is designated, the information accumulation and delivery means 400 managed by the computer 200 is connected via Internet, and it is possible to see the image and listen to the voice of the delivery article sending person 100 by opening the homepage. The IC tag 330 attached to the delivery article 110 can be semipermanently used. COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:容易和半永久地存储关于诸如礼品或销售商品的交付物品作为递送者或公司的新业务的消息,并将其作为运动图像传送。 解决方案:IC标签330附接在递送物品110上,并且存储必要的信息。 拍摄或直接输入发送物品发送人100的图像或声音,并将其累积在由传送器管理的计算机200的信息累积和传送装置中。 在将送货物品110和IC标签330交付到送货物品接收人510之后,送货物品接收人510利用终端600从IC标签330读取信息。显示信息中的主页的URL 通过终端660被指定,由计算机200管理的信息累积和传送装置400通过因特网连接,并且可以通过打开主页来查看图像并收听发送物品发送人100的声音。 可以半永久地使用附接到递送物品110的IC标签330。 版权所有(C)2005,JPO&NCIPI
    • 10. 发明专利
    • Distance measuring apparatus for multichannel type towing receiver
    • 用于多通道类型接收器的距离测量装置
    • JPS61133884A
    • 1986-06-21
    • JP25610284
    • 1984-12-04
    • Nec Corp
    • KAWAMURA MASAO
    • G01S11/14G01S11/00G01S15/89G01V1/38
    • G01V1/3835
    • PURPOSE:To achieve a simplified production process and a lighter weight of the equipment as a whole eliminating the mounting of a receiver for measuring distance, by measuring the distance from the stern at channels utilizing receivers for detecting sound waves provided in the respective channels. CONSTITUTION:In the oceanic survey towing a multichannel type towing receiver 10 and a transmitter 3 at the stern of an oceanic survey ship 1, when the linear distance l3 is measured to channels 1-N in the receiver 10 from the stern, receivers 11-13 themselves for detection of sound waves are used. To achieve this, for example, a directly propagated wave 4 emitted from the transmitter 3 is detected with the receivers 11-3 and the time spent from the transmission to the reception may be measured in terms of distance. This eliminates a distance measuring receiver and an exclusive signal line thereby achieving a lighter weight.
    • 目的:为了实现简化的生产过程和更轻的设备整体重量,消除了用于测量距离的接收器的安装,通过使用用于检测在各个通道中提供的声波的接收器测量来自船尾的通道的距离。 规定:在海洋测量船1的船尾处的多通道式拖曳接收器10和发射机3的海洋测量中,当从船尾接收器10中的通道1-N测量直线距离l3时,接收机11- 使用13个自身来检测声波。 为了实现这一点,例如,从接收机11-3检测从发射机3发射的直接传播的波4,并且可以以距离来测量从传输到接收所花费的时间。 这消除了距离测量接收机和专用信号线,从而实现了更轻的重量。