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1. 发明专利

JP2004247554A Information device 审中-公开
公开(公告)号：JP2004247554A
公开(公告)日：2004-09-02
申请号：JP2003036439
申请日：2003-02-14
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： NAKAJIMA YUJI , KANO IKUO
IPC分类号： H05K5/02 , H05K5/03
摘要： PROBLEM TO BE SOLVED: To provide an information device in which information can be prevented from being leaked or stolen in a simple and safe configuration in the information device wherein information such as personal information to be protected from stealing or leaking is stored.
SOLUTION: An information device 10 is provided with a casing 4, a distance measuring part 3 that is disposed in the casing 4 for measuring a distance to a predetermined surface in the casing 4, and an abnormal signal generating part for generating an abnormal signal when the distance measured by the distance measuring part 3 is out of a range of preset thresholds.
COPYRIGHT: (C)2004,JPO&NCIPI

2. 发明专利

JP2001167523A DATA DECODING CIRCUIT AND SEMICONDUCTOR DEVICE INCORPORATING THIS CIRCUIT 失效
公开(公告)号：JP2001167523A
公开(公告)日：2001-06-22
申请号：JP34838899
申请日：1999-12-08
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： SUSA NAOKAZU , KANO IKUO
IPC分类号： G11B20/10 , G11B20/14 , H03L7/08 , H03L7/091 , H03L7/099
摘要： PROBLEM TO BE SOLVED: To stabilize a synchronous characteristic even when a change range of a follow-up frequency is wider, to make sure a drawing synchronous response, and further to perform data processing through two kinds or above of transfer routes by limiting a numerical value of count information imparted to a main counter. SOLUTION: When an adder/subtracter 1 adds a feedback amount with a reference count value to supply it to the main counter 2, a phase latch circuit 4 holds the count value of the main counter 2 for detecting phase deviation between the output signal of the main counter 2 and the regenerative data. Then, the circuit 4 calculates the feedback amount to the main counter 2 while correcting with a decimal processing circuit 13 through an accumulator 7 and a divider 12, etc. Further, a frequency limiter 17 limits the upper/lower limit values of the feedback numerical value to limit a target frequency range. Further, an initial phase matching circuit 18 performs initialization operation at the read-out permit timing, and a transfer rate switch circuit 19 performs the switch operation of the regenerative data through two kinds or above transfer routes.

3. 发明专利

JP2000030208A MAGNETICALLY RECORDED SIGNAL REPRODUCING CIRCUIT 失效
公开(公告)号：JP2000030208A
公开(公告)日：2000-01-28
申请号：JP19483698
申请日：1998-07-09
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： KANO IKUO
IPC分类号： G11B5/09
摘要： PROBLEM TO BE SOLVED: To provide a magnetically recorded signal reproducing circuit which is enhanced in latitude for setting the cut-off frequency of a filter. SOLUTION: This circuit is provided with two low-pass filters 3, 9 (LPF) differing from each other in cut-off frequency used for eliminating saddle noise generated in lower frequency components among plural frequency components, a differentiator 2 for creating a signal of which a peak point of a head reproducing signal containing different high frequency components is converted to zero- crossing, two comparators 4, 10 for digitizing each output signal of the two LPFs 3, 9, and a latching circuit 7 which generates a latch timing for eliminating saddle noise from the outputs of the two comparators. This configuration can surely improve the noise-proofing property of the drooping part and increases the latitude for setting range of LPF constant. This face can extend the range of tolerance for heads and media and improve the reading margin and error rate of the reproducing circuit.

4. 发明专利

JPH07161126A INFORMATION RECORDING MEDIUM IDENTIFICATION APPARATUS 失效
公开(公告)号：JPH07161126A
公开(公告)日：1995-06-23
申请号：JP30639393
申请日：1993-12-07
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： KANO IKUO
IPC分类号： G11B19/04 , G11B19/12
摘要： PURPOSE:To reduce connecting lines through which a discrimination signal which is the result of the discrimination of a medium is lead out, reduce the cost and improve the electrical and mechanical reliability. CONSTITUTION:When a 2HD hole discrimination switch 12 and a 2ED hole discrimination switch 13 are in off-states, high level (H) potentials equal to a power supply potential Vcc are applied to inverters 14 and 15 through resistors R11 and R12 and reversed three-state signals Sa and Sb are outputted. On the other hand, when the switches 12 and 13 are in on-states and, further, if a write inhibit hole discrimination switch 11 is in an on-state, the potentials of the input terminals of the inverters 14 and 15 are low level (L) potentials and high-level signals Sa and Sb are outputted. If the 2HD hole discrimination switch 12 and the 2ED hole discrimination switch 13 are in on-states and, further, the write inhibit hole discriminating switch 11 is in an off-state, a middle level (M) signal Sa and Sb are outputted.

5. 发明专利

JPH07147009A MAGNETIC RECORDER 失效
公开(公告)号：JPH07147009A
公开(公告)日：1995-06-06
申请号：JP3971594
申请日：1994-03-10
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： KANO IKUO
IPC分类号： G11B5/09 , G11B5/465
摘要： PURPOSE:To provide the magnetic recorder constituted to degauss magnetic heads after the end of a writing operation and to easily execute circuit correction without increasing externally mounting parts by adding a circuit to a logic circuit. CONSTITUTION:This magnetic recorder is provided with a delay circuit 5 for forming a writing end delay signal for delaying writing for a specified period of time after the end of the writing time form a writing permissible signal. The recorder is provided with a degaussing writing data forming circuit 6 for forming degaussing writing data of gradually narrow intervals in accordance with the writing end delay signal. A writing/reading out IC 3 attenuates the currents to be passed to magnetic heads 1, 2 from the point where the spacing of the writing data is narrowed from the rising time of the magnetic head currents in accordance with the degaussing writing data, thereby degaussing the magnetic heads 1, 2.

6. 发明专利

JP2004127338A Magnetic disk device 审中-公开
公开(公告)号：JP2004127338A
公开(公告)日：2004-04-22
申请号：JP2002285771
申请日：2002-09-30
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： KANO IKUO
IPC分类号： G11B5/40
摘要： PROBLEM TO BE SOLVED: To provide a magnetic disk device in which a head is not destructed by static electricity while the constitution is simplified.
SOLUTION: The device is provided with a head 2 which is used to conduct magnetic recording/reproducing onto or from a disk 1, a motor 4 which is used to move an arm 3 that supports the head and a control PCB 8 which is used to control the entire device. Normal close opening and closing means 15 and 16 are provided as the means to connect the wiring between the PCB, the head and the motor through an FPC12. Between the PCB and the FPC, the terminals of the head are short-circuited when the PCB is not connected. When the PCB is connected, the terminals of the head are made open and the connection of the electric circuit with the PCB is made by the means 15 and 16.
COPYRIGHT: (C)2004,JPO

7. 发明专利

JPH09231668A FLOPPY DISK DEVICE 失效
公开(公告)号：JPH09231668A
公开(公告)日：1997-09-05
申请号：JP3337396
申请日：1996-02-21
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： KANO IKUO
IPC分类号： G11B20/10 , G11B19/06 , G11B27/10
摘要： PROBLEM TO BE SOLVED: To interrupt the generation of reading error due to the skipping of read-out of an index signal at the time of reading from media with a read-only format in which the number of bytes of a preamplifier is reduced. SOLUTION: The device is provided with a delay circuit 1 outputting a delayed inside index signal Sb formed by delaying the inside index signal Sa and a selector 2 selecting the inside index signal Sa supplied to an input terminal A or the delayed inside index signal Sb inputted to an input terminal B by a write protect signal Sc supplied to a selection terminal S and outputting the selected one from an output terminal Y as an outside index signal Sd. The skipping of read-out at the front edge of the index signal in the write inhibiting state is quickly processed, and in the write permitting state, the index signal is generated near the reference position. The skipping of read-out at the front edge of index by an FDC(floppy disk controller) is processed quickly by a specific time, then the time of skipping read-out is made not to overlap with a sector 1 for only this specific time.

8. 发明专利

JPH0817027A MAGNETIC RECORDING AND REPRODUCING DEVICE 失效
公开(公告)号：JPH0817027A
公开(公告)日：1996-01-19
申请号：JP14484994
申请日：1994-06-27
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： KANO IKUO
IPC分类号： G11B5/53 , H05K1/02 , H05K3/28 , H05K3/38
摘要： PURPOSE:To improve the error rate in reproduced data by making electrostatic charges into an equilibrium state which is accumulated on the surface of FPC (flexible printed circuit) when FPC formed on a recording and reproducing head carriage and recording and reproducing circuits slide on the mechanical parts around the head during the head is moved. CONSTITUTION:In the FPC 1, a conductive powder or the like is mixed to adhesive layers 3, 4 which adhere the insulating films 5, 6 to cover the surface of FPC 1 and copper foil 2 to be connected to the head and electric circuits so that the conductivity of FPC is increased. When electrostatic charges are accumulated on the surface of films 5, 6, charges in the opposite polarity is supplied by the adhesive layers 3, 4 having conductivity so that the electrostatic charges are made into an equilibrium state. Thus, discharge during the head is stopped is suppressed. This prevents discharge noise from mixing into the reproducing circuit.

9. 发明专利

JPH03268018A FLOPPY DISK DEVICE 失效
公开(公告)号：JPH03268018A
公开(公告)日：1991-11-28
申请号：JP6774890
申请日：1990-03-16
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： KANO IKUO
IPC分类号： G06F3/06
摘要： PURPOSE:To decrease the number of kinds of a large scale integrated circuit (LSI) of a floppy disk device (FDD) by selecting an output of a logic circuit in the LSI by a selector in accordance with a level of a select signal, and executing an output and an input of an interface signal. CONSTITUTION:An interface signal inputted to an LSI 1 from an interface connector passes through buffers 6 - 11 and a logic circuit by a select signal of the inside of the LSI 1 and is selected and inputted by selectors 26 - 29, and the interface signal inputted to the logic circuit of the inside of the LSI 1 is extracted by the selectors 25 - 29 by the select signal and outputted to the interface connector through the buffers 6 - 11 in the LSI 1. Accordingly, it is possible to cope with a user of various interface array specifications, and it is possible to cope with various kinds of FDDs by one kind of LSI. In such a way, the kind of various printed boards, and the kind of LSI adopted for the FDD can be curtailed.

10. 发明专利

JPH03263661A FLOPPY DISK DEVICE 失效
公开(公告)号：JPH03263661A
公开(公告)日：1991-11-25
申请号：JP6143190
申请日：1990-03-13
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： ITSUKAICHI KIWAMU , NOZOKIDO HIROYUKI , KANO IKUO
IPC分类号： G11B21/08
摘要： PURPOSE:To securely detect a track phi at the time of turning on a power source by performing forcible seeking toward the inner circumference, making after ward the seeking toward the outer circumference when a sensor flag is being detected by a track phi sensor inside the device and detecting the track phi accordingly. CONSTITUTION:When a step signal 7a is inputted by ignoring a signal from a host side in the outer circumferential direction at the time of detecting the track phi, the seeking is forcibly made toward the inner circumferential side until a position where the track phi is not in existence upon receipt of an output showing that the track phi sensor 6 is situated nearer to the outer circumference than a track 1, and after a given period of time (settling time), the seeking is made in the outer circumferential direction to detect the regular track phi. That is, a TZP signal 7e for forcibly making the inner part seeking and a C-phase signal 7f for outputting only C-phase in excitation phases are inputted to a NAND circuit 11, and its output is inputted to an RS flip flop 12. By this method, at the time of turning on the power source, the correct track phican always be detected by the signal on the host side.

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