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    • 1. 发明专利
    • DATA COLLECTION METHOD
    • JPH05145561A
    • 1993-06-11
    • JP30365091
    • 1991-11-20
    • FUJITSU LTD
    • SASAYA TOSHIHISA
    • G08C15/00H04L12/28H04L12/40
    • PURPOSE:To obtain the data collection method capable of preventing missing even when noise is consecutively caused in a propagation path with respect to the data collection method in the data collection system in which data are collected by the polling system at a monitor station from plural observation stations through the use of a single radio line. CONSTITUTION:When a monitor station 10 cannot receive data due to consecutive noise or the like occurred in a propagation path with an observation station 4, the master station 10 changes a path by using, e.g. an observation station 2 for a relay station to collect data. An address code 24 is sent by the monitor station 10 to revise the path and the observation station 2 converts the code into an address code 04 and sends the converted code. The observation station 4 returns the address code 04 and the observation station 2 receives a signal of the address code 04 the same as the sent address code and converts the address code into the set address code 24 and transmits it. The monitor station 10 receives the signal of the code 24 the same as the sent address code to collect data by changing the path.
    • 3. 发明专利
    • TIME DIVISION BROADCASTING EQUIPMENT
    • JPH06252866A
    • 1994-09-09
    • JP3717993
    • 1993-02-26
    • FUJITSU LTD
    • SASAYA TOSHIHISAKURODA YOSHIYUKI
    • H04H20/00H04H20/26H04H20/61H04H1/00
    • PURPOSE:To reduce the output capacity of an audio amplifier and the capacity of the power supply and to prevent sounds from plural speakers from being overlapped by storing a received audio signal and broadcasting it while selecting speakers sequentially. CONSTITUTION:A power supply application signal of an audio amplifier is sent from a supervisory station 11 to activate a power supply of an audio amplifier 27 of a speaker station 21 and to set an audio memory 25 to a recording state, then an audio signal is sent to be sounded from a speaker 1 and stored in the audio memory 25 and when the sounding of the audio signal is finished, a sounding end signal is sent and then the recorded audio signal is reproduced and sounded sequentially from speakers 2, 3. The speaker station 21 sends the received audio signal to the speaker 1 for the first time, and records the signal in the audio memory 25, then the audio signal reproduced from the audio memory 25 is sent to the speaker 2 selected for the 2nd time and the audio signal reproduced from the audio memory 25 is sent to the speaker 3 selected for the 3rd time in this way and they are repeated again. When the audio sounding is finished, the power supply is deenergized.
    • 5. 发明专利
    • SPEAKER TEST SYSTEM
    • JPH0193299A
    • 1989-04-12
    • JP25098587
    • 1987-10-05
    • FUJITSU LTD
    • SASAYA TOSHIHISA
    • H04R29/00G01H17/00
    • PURPOSE:To attain operation test without giving sound externally by applying a signal in opposite phase to two driver units and comparing outputs of an output section of one unit with a synthesis section of the other unit in a horn type speaker provided with the two driver units and a Y-shaped tube connected to them. CONSTITUTION:The signal is fed in opposite phase to the two driver units 1, 2 and microphones 4, 5 are provided respectively to an output section of the one driver unit and the synthesis section (horn corresponding to the output section of the Y-shaped tube 3) of the synthesis section of the two driver units 1, 2 and outputs of the two microphones 4, 5 are compared to apply the operation test of the speaker. The sound is given to each output section of the two driver units 1, 2 but no sound comes to the output of the Y-shaped tube 3 while being cancelled together. Thus, normally the level of the sound collection microphone 4 is high and the level of the sound collection microphone 5 is zero and if one driver unit is opened or shortcircuited, the level of the microphones 4, 5 is high and if both driver units 1, 2 are opened or short-circuited, the level of the microphones 4, 5 is zero.
    • 6. 发明专利
    • SYSTEM FOR DETECTING TROUBLE OF RAIN GAUGE
    • JPS61250579A
    • 1986-11-07
    • JP9246585
    • 1985-04-30
    • FUJITSU LTD
    • SASAYA TOSHIHISA
    • G01F11/16G01F11/26G01W1/14G01W1/18
    • PURPOSE:To make it possible to detect the trouble of a rain gauge, by arranging a detection turnover measure to the lower part of a turnover measure and utilizing that the turnover direction of the turnover measure is different from that of the detection turnover measure when the turnover measure performs no predetermined turnover operation. CONSTITUTION:A turnover measure 3 constituted of measure parts 3A, 3B is mounted to a container 1 so as to be swingable around a fulcrum 4. A detection turnover measure 10 has the almost same shape as the turnover measure 3 and arranged under the turnover measure 3. When the turnover measure 3 is normally operated, for example, the measure part 3B receives rainwater and, when a predetermined amount of rainwater is accumulated, the measure part 3A is turned over to the side of the measure part 3B. At this time, a switch (S)7 is turned ON and a counter 21 counts that the measure 3 was turned over once. The rainwater drained from the measure part 3B is flowed in a detection measure part 10B and a detection circuit 15 comes to a closed state. When the turnover measure 3 is out of order, for example, even if a predetermined amount of rainwater is accumulated in the measure part 3A, no turnover is generated and rainwater is overflowed to be made to flow in a detection measure part 10A. At this time, the circuit 15 is opened and the trouble of a rain gauge 20 can be detected.
    • 7. 发明专利
    • WATER LEVEL MEASURING DEVICE
    • JPH0540055A
    • 1993-02-19
    • JP19624391
    • 1991-08-06
    • FUJITSU LTD
    • SASAYA TOSHIHISA
    • G01F23/18G01F23/14G01F23/24G01F23/74G01F25/00H01H36/02
    • PURPOSE:To enable an inexpensive and highly accurate hydraulic type.to be used even at a deep water depth by compensating an actual measurement data by using a compensation value which is obtained previously until a water-level switch operates. CONSTITUTION:An ON/OFF signal from water-level switches 3a-3c is fed to a data-compensation portion 4. An actual water level when the switches 3a-3c are operated are known accurately beforehand according to an installation height of the switches 3a-3c so that the compensation portion 4 generates an actual water level data corresponding to an installation position of the switch 3b according to the ON/OFF signal, for example, from the switch 3b and then compares the actual water level data with an actual measurement digital signal from a signal conversion portion 2. Then, the difference is calculated as a compensation value and is retained and the compensation value is subtracted from the actual measurement data until other switches 3a and 3c are operated for compensation. Namely, the actual measurement data is compensated by this compensation value until the water level reaches an installation position of adjacent switches 3a and 3c.
    • 8. 发明专利
    • TIME DIVISION RADIO COMMUNICATION SYSTEM
    • JPH04373229A
    • 1992-12-25
    • JP17765291
    • 1991-06-21
    • FUJITSU LTD
    • SASAYA TOSHIHISA
    • H04B7/00H04J3/18
    • PURPOSE:To attain talking for a talking party similarly to the usual state by sending a signal in time division, relaying the signal in time division, allowing a receiver to restore the speed and reproducing the signal. CONSTITUTION:Let a talking time be 10sec, then a voice signal from a microphone 1 is inputted to memories 5, 6. A voice control section 4 sets the memories 5, 6 to the recording mode alternately by using command signals W1, W2. The signal is read alternately at a speed twice that at the write and subject to time compression immediately at the end of the write. The signals are synthesized by a mixer 7, and a transmitter 9 sends the resulting signal to a relay station in a single radio wave while being subject to double time compression according to a press-to-talk PT from the voice control section 4. The signal reached to the reception station via the relay station is received by a receiver 14 and inputted to memories 19, 20 in parallel. A voice control section 18 sets memories 19, 20 alternately synchronously with the time division signal based on squelch SQ to the recording mode to write the time division voice signal into the memories alternately. In this case, the write speed is twice the time division voice (usual voice) speed. The signal is read immediately at a speed of 1/2 after the end of write. The mixer 21 mixes the signal, and the result is restored and sounded from a speaker 24.
    • 10. 发明专利
    • RECEIVER FAULT DECIDING SYSTEM
    • JPS60240234A
    • 1985-11-29
    • JP9694484
    • 1984-05-15
    • FUJITSU LTD
    • SASAYA TOSHIHISA
    • H04B1/74H04B1/16H04B17/00H04B17/29
    • PURPOSE:To inflict no loss to a radio receiver which is being operated as an existing machine by using a linear coupler for exerting almost no-loss and large loss to the existing machine and a stand-by machine, respectively, and connecting it to an antenna. CONSTITUTION:As for a linear coupler 20, its loss is about 0.5dB with respect to terminals (a) (b) and there is scarcely loss, but as for terminals (a) (c), a resistance (r) is inserted, and the loss attains to 20dB. Therefore, both receivers 3, 4 are constituted in advance so that when there is no signal, the output contact of a squelch circuit is closed and grounded, and when there is a signal, its output contact is opened and the ground is detached. When a No.1 receiver 3 being an existing machine is being operated, if the output contact of its squelch circuit is closed, a coaxial relay is operated automatically by deciding a fault, and by its contacts 21-24, a No.2 receiver 4 being a stand-by machine is connected to the output terminal (b) of the linear coupler 20.