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    • 96. 发明专利
    • TERMINAL EQUIPMENT FOR CATV
    • JPH06225304A
    • 1994-08-12
    • JP968693
    • 1993-01-25
    • FUJITSU LTD
    • NISHIMURA TAKASHI
    • H04N7/10H04N7/16H04N21/426H04N21/442
    • PURPOSE:To judge a network abnormality by detecting a level lowering abnormality when a reception carrier level is below a normal value and is in an operation time zone. CONSTITUTION:A reception signal is scrambled at a center 1 and is transmitted to a coaxial network 10. When the level of the carrier received by the signal level detection part 18 of a terminal equipment 13 for CATV is below a normal value and the level continues for more than prescribed time, it is made to be detected as the level lowering and abnormality of the reception signal. When the level received by the detection part 18 is pertinent to either one of a case where the level received by the detection part 18 is below the normal value and the carrier can be detected, a case where the carrier can not be detected and the time is an operation time zone and a case where the carrier can not be detected, the time is not the operation time zone and the state continues for more than prescribed time, the level lowering and abnormality of the reception signal is detected. The abnormality of the network can be definitely detected and the definite maintenance of the signal level of the network can be performed by notifying the abnormality by automatically transmitting the alarm data to which the contents is set to the center 1 when the abnormality is detected.
    • 98. 发明专利
    • Circuit constituting method
    • 电路构成方法
    • JPS61129586A
    • 1986-06-17
    • JP25090384
    • 1984-11-28
    • Fujitsu Ltd
    • TSUNODA KAZUMASANISHIMURA TAKASHI
    • G01R31/28
    • G01R31/2844
    • PURPOSE:To set conditions by standardizing the standard settings of a function setting circuit to an open circuit side and discriminating a setting state corresponding to the standardized setting circuit, and short-circuiting other setting terminals in the standard setting state. CONSTITUTION:All standard settings of the function setting circuit 5a are standardized to the opening circuit side. Namely, short-circuit plugs 7a and 7b inserted into setting pins 10a and 10c among setting pins 10a-10d. Further, a setting state discriminating circuit 6a is provided and connected to a main circuit 4a. Then, the circuit 6a consists of, for example, buffers 11 and 12 corresponding to the standard constitution of the circuit 5a. Further, the circuit 4a also employs circuit constitution adapted to the standard constitution. Therefore, an option-side circuit is short-circuited in the standard setting state to obtain the same settings as option settings and an option side is accessed while the plugs 7a and 7b are inserted into the pins 10a and 10c during an automatic test, which then becomes possible, thereby eliminating the need to replace the plugs 7a and 7b.
    • 目的:通过将功能设定电路的标准设定标准化为开路侧,判别与标准化设定电路对应的设定状态,并将标准设定状态下的其他设定端子短路来设定条件。 构成:功能设定电路5a的所有标准设定被标准化为开路电路一侧。 即,在设置销10a-10d之间插入设置销10a和10c的短路插头7a和7b。 此外,设置状态判别电路6a并连接到主电路4a。 然后,电路6a例如由对应于电路5a的标准结构的缓冲器11和12组成。 此外,电路4a还采用适合标准结构的电路结构。 因此,在标准设定状态下,选择侧电路短路以获得与选项设置相同的设置,并且在插头7a和7b在自动测试期间插入销10a和10c期间访问选项侧,其中 然后变得可能,从而不需要更换插头7a和7b。
    • 99. 发明专利
    • TIDAL WAVE FORECASTING DEVICE
    • JPS6095376A
    • 1985-05-28
    • JP20418483
    • 1983-10-31
    • FUJITSU LTD
    • SUMI KAZUTOMINISHIMURA TAKASHI
    • G01D21/00G01V1/00G01V1/16
    • PURPOSE:To forecast quickly a tidal wave by always observing a ground motion of one geographical point, and judging whether it is an earthquake or not from obtained three components of up and down, north and south, and east and west. CONSTITUTION:A ground motion analog signal of three components of up and down, north and south, and east and west from a seismograph installed at one geographical point passes through an input filter 1, converted to a digital value and stored in a memory 3. In this regard, this conversion is executed at an equal interval by a sampling signal from a clock device 4. Subsequently, a microprocessor 5 decides generation of an earthquake by always calculating a moving mean value of a digital value stored in the memory 3. When generation of an earthquake is judged, a peak of an input digital value of the first, for instance, 5sec after generation of the earthquake is derived, and judges when this peak value exceeds a prescribed value, and also the direction of the earthquake center is a direction of the sea by seeing from the observing point, it is judged to be a tidal wave, and an alarm device 6 is started. Subsequently, a buzzer, etc. are sounded, and also the peak value and the direction of the earthquake center are displayed on a digital indicator 7.