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1. 发明专利

DE3916379C3 未知
公开(公告)号：DE3916379C3
公开(公告)日：1994-12-15
申请号：DE3916379
申请日：1989-05-17
申请人： MITSUBISHI ELECTRIC CORP
发明人： SHIMOI HIROSHI , INADOMI TAKAFUMI , NAKAMURA RYOICHI , KAWAHARA KAN
IPC分类号： G11B5/41 , G11B15/087 , G11B27/36

2. 发明专利

SG48833A1 Intermittent magnetic recording method and apparatus thereof 未知
公开(公告)号：SG48833A1
公开(公告)日：1998-05-18
申请号：SG1996002357
申请日：1991-01-07
申请人： MITSUBISHI ELECTRIC CORP
发明人： SHIMOI HIROSHI , INADOMI TAKAFUMI
IPC分类号： H04N9/80 , H04N5/915 , H04N9/79

3. 发明专利

DE69125729T2 未知
公开(公告)号：DE69125729T2
公开(公告)日：1997-09-04
申请号：DE69125729
申请日：1991-01-07
申请人： MITSUBISHI ELECTRIC CORP
发明人： SHIMOI HIROSHI , INADOMI TAKAFUMI
IPC分类号： H04N9/80 , H04N5/915 , H04N9/79

4. 发明专利

DE69125729D1 未知
公开(公告)号：DE69125729D1
公开(公告)日：1997-05-28
申请号：DE69125729
申请日：1991-01-07
申请人： MITSUBISHI ELECTRIC CORP
发明人： SHIMOI HIROSHI , INADOMI TAKAFUMI
IPC分类号： H04N9/80 , H04N5/915 , H04N9/79

5. 发明专利

DE3916379A1 Magnetic recording and reproducing apparatus 未知
公开(公告)号：DE3916379A1
公开(公告)日：1989-11-30
申请号：DE3916379
申请日：1989-05-17
申请人： MITSUBISHI ELECTRIC CORP
发明人： SHIMOI HIROSHI , INADOMI TAKAFUMI , NAKAMURA RYOICHI , KAWAHARA KAN
IPC分类号： G11B5/41 , G11B15/087 , G11B27/36
摘要： A description is given of a magnetic recording and reproducing apparatus with a device for detecting contamination on the magnetic heads. This device includes a comparison unit for comparing a predetermined value with an absolute value of signals which are formed by reproduction of recorded signals directly after the recording. If the absolute value is lower than the predetermined value, contamination signals can be passed to a device for cleaning the heads.

6. 发明专利

JPS61202585A MAGNETIC RECORDING DEVICE FOR CAMERA SIGNAL 失效
公开(公告)号：JPS61202585A
公开(公告)日：1986-09-08
申请号：JP4507585
申请日：1985-03-05
申请人： MITSUBISHI ELECTRIC CORP
发明人： SHIMOI HIROSHI
IPC分类号： G11B20/02 , H04N5/91 , H04N5/92
摘要： PURPOSE:To obtain a clear reproduced picture without doubling even if the period of the lock signal of a camera switching device is made short by so forming the title device that the synchronous signal is converted to a frame synchronizing signal, and the synchronized video signals from respective video cameras are sequentially switched based on the said converted signal, and the recorded in a magnetic recording means. CONSTITUTION:When the intermittent recording mode is selected by a mode selecting switch, the video signal is intermittently transferred to the magnetic tape of a VTR 3 at every frame with a prescribed time interval in advance. The clock signal for the above operation is supplied to a switch controller 23 via a switch 51, and a video switch 22 is sequentially switched in synchromization with the said clock signal, accordingly, the signal is recorded to the VTR 3 to which the respective video signals from the video cameras C1, C2, C3, ...CN are sequentially inputted by every frame. When the continuous recording mode is being selected by the mode selecting switch, the field synchronizing signal from a synchronous signal generator 21 is supplied in parallel to the respective video cameras C1, C2, C3, ...CN of plural cameras 1.

7. 发明专利

JPS5982607A VIDEO HEAD CIRCUIT 失效
公开(公告)号：JPS5982607A
公开(公告)日：1984-05-12
申请号：JP19379882
申请日：1982-11-02
申请人： MITSUBISHI ELECTRIC CORP
发明人： SHIMOI HIROSHI
IPC分类号： G11B5/027 , G11B20/24
摘要： PURPOSE:To shorten the distance from a video head to an amplifier circuit and to prevent the influence of noises by blowing a recording signal and a reproducing signal into a video head circuit without using a switching element. CONSTITUTION:At the recording, a recording signal impressed to an input terminal 4 is amplified and outputted by/from a recording amplifier circuit 1. The impedance of the video head 2 for the output recording signal is normally

8. 发明专利

JPS57104318A ANALOGUE-DIGITAL CONVERTING DEVICE 失效
公开(公告)号：JPS57104318A
公开(公告)日：1982-06-29
申请号：JP18088180
申请日：1980-12-19
申请人： MITSUBISHI ELECTRIC CORP
发明人： SATOU FUMIHIDE , SHIMOI HIROSHI
IPC分类号： H03M1/12 , H03K13/02
摘要： PURPOSE:To convert the average value of an AC voltage to a digital signal in a high speed, by using a clock pulse, which is synchronized with the AC voltage to be measured and have the 1/N period of the period of the AC voltage, as a sampling pulse. CONSTITUTION:An AC voltage li applied to an input terminal 1 is inputted to a period detecting circuit 2, and the circuit 2 generates a pulse at every one period of this voltage, and this pulse is inputted to a miltiplying circuit 3 to generate a pulse train which has the 1/N period of the period of the input pulse, and this pulse train is used as clock pulses. The AC voltage li is inputted to an A/D converting circuit 4, and the circuit 4 uses clock pulses as sampling pulses to convert the momently value to a digital signal, and a sign indicating positive and negative is ignored, and this digital signal is accumulated in a digital accumulating circuit 5. The digital accumulating circuit 5 is reset to 0 for every output of the period detecting circuit 2, and the accumulated value just before the reset is transferred to a digital dividing circuit 6 and is divided by a constant N and is outputted to an output terminal 7.

9. 发明专利

JPH02154578A BRIGHTNESS TRIGGER DEVICE 失效
公开(公告)号：JPH02154578A
公开(公告)日：1990-06-13
申请号：JP30921288
申请日：1988-12-06
申请人： MITSUBISHI ELECTRIC CORP
发明人： TOUGE KAZUTOMO , SHIMOI HIROSHI
IPC分类号： G01J1/42 , H04N5/225 , H04N5/232
摘要： PURPOSE:To compare brightness levels and to output a brightness trigger signal by using a brightness detection circuit and detecting the brightness level from a video signal sent to a video equipment. CONSTITUTION:A brightness detection circuit 3 is a circuit constituted to extract the brightness level from a video signal, the signal is given to a conventional low pass filter, the constant is varied in this case to detect the mean brightness of one frame or multiframe and the brightness level of a specific part of the video signal is detected by using the vertical synchronous signal and the horizontal synchronous signal of the video signal. The detected signal is compared with a signal extracted at a brightness comparison level setting terminal 6 by a brightness comparator 4. Thus, a trigger signal is outputted from a brightness trigger generating circuit 5 by using the comparison output.

10. 发明专利

JPS6370697A WIRED REMOTE CONTROLLER 失效
公开(公告)号：JPS6370697A
公开(公告)日：1988-03-30
申请号：JP21633886
申请日：1986-09-12
申请人： MITSUBISHI ELECTRIC CORP
发明人： SHIMOI HIROSHI
IPC分类号： H04Q9/00 , F24F11/02 , H04Q9/16
摘要： PURPOSE:To prevent malfunction in remote control operation and to greatly increase cable length and the number of switch by providing a linear wave generating means, a level comparing means which generates an output when its output reaches a specific voltage, and a decoding means. CONSTITUTION:Clock pulses A outputted by the decoder 1 are applied to the set input S of an FF 2 at a constant period and the output Q is inverted from L level to H level, so that an analog switch 73 turns off. At the same time, the output E of an operational amplifier 71 begins to rise linearly and when it reaches the comparison level of the level comparing means 8, an L-level directional output F is generated by the operational amplifier 81 to reset the FF 2 through an inverter 86, thereby obtaining a signal B which is converted to pulse width T at its output Q. When the output Q falls to the L level again, the switch 73 turns on to discharge a capacitor 72 abruptly, and the output E returns to its original level E1. The output Q is inputted to a decoder 1 and converted by its internal decoding circuit into switch operation information on a transmitter 6.

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