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41. 发明专利

JPH0751255A DYNAMIC GRASPING POWER MEASURING DEVICE 失效
公开(公告)号：JPH0751255A
公开(公告)日：1995-02-28
申请号：JP20389093
申请日：1993-08-18
申请人： HITACHI LTD
发明人： OKAWA TAKEHIRO , MIZUISHI KENICHI , HAMAMOTO NOBUO , OTAKE MASATOSHI
IPC分类号： A61B5/22 , A63B71/06 , A63B71/14
摘要： PURPOSE:To reduce the influence of a disturbance noise by loading a means to increase the output signal wave form of a pressure detecting element to a bag form body, in a dynamic pressure measuring device having a bag form body to envelope the front side from a wrist an element to detect the pressure is installed, or the whole body of a glove. CONSTITUTION:When a grasping power measuring device is applied to a glove for golf, the output signals of membrane form pressure detecting elements 5a and 5b equipped at the measuring points at the palm side of a hand are input to a unit 2 mounted on the outer side of the part which can be opened and closed to facilitate the putting on and off of a glove 1, through a flexible substrate 4. And after amplifying the signals by an amplifier circuit in the unit 2, they are output to an external device through a cable 3 with connector, while the driving power source of the amplifier circuit and the power detecting elements 5a and 5b is fed from the external device through the cable 3 with connector. In this external device, grasping power variation data in a swinging is to be grasped, in a sport training such as the golf and the tennis in which the dynamic grasping degree is made as an important element.

42. 发明专利

JPH0350908A PHASE CONTROL CIRCUIT 失效
公开(公告)号：JPH0350908A
公开(公告)日：1991-03-05
申请号：JP18463489
申请日：1989-07-19
申请人： HITACHI LTD
发明人： OKAWA TAKEHIRO , TAKADA KEIJI , KONDO HITOSHI
IPC分类号： H03H11/16
摘要： PURPOSE:To eliminate the need for setting a phase angle at every change in the frequency by adding a circuit switching the input to a circuit controlling one or both sinusoidal wave and cosine wave components of an input signal and adding them to control the phase. CONSTITUTION:A sinusoidal wave and a cosine wave component with equal amplitude are respectively inputted to input terminals 1, 2. A sinusoidal wave passes through a signal changeover switch 3 as one input to an adder 4 and a cosine wave passes through the signal changeover switch 3 as one input to a multiplier 5. A DC voltage of a prescribed range enters the other input of the multiplier 5 from a control input terminal 6 as a phase angle setting signal. Then the cosine wave subject to amplitude control with, e.g. a multiple of 0-1 by the multiplier is the other input of the adder 4. The output of the adder 4 subject to lead phase control by 0-45 deg. with respect to the sinusoidal wave is inputted to a numerator term of a divider 8 and an output of a function generator 7 receiving the DC voltage of the input terminal 6 connects to the denominator term. As a result, a waveform signal subject to phase control and amplitude control equal to the case with the input signal is outputted from an output terminal 9 connecting to the output of the divider 8.

43. 发明专利

JPH027231A INFORMATION RECORDING METHOD 失效
公开(公告)号：JPH027231A
公开(公告)日：1990-01-11
申请号：JP15677988
申请日：1988-06-27
申请人： HITACHI LTD , HITACHI MAXELL
发明人： TERAO MOTOYASU , MIYAUCHI YASUSHI , OTAKE MASATOSHI , OKAWA TAKEHIRO
IPC分类号： G11B11/10 , G11B7/00 , G11B7/0045 , G11B7/30 , G11B11/105
摘要： PURPOSE:To accurately perform the rewrite of a record with a simple circuit by eliminating an original signal with the minimum pulse width and pulse interval out of the original signals to be recorded, and setting a part except for the above signal at a prescribed value after applying the overshoot or the under shoot of the power of an energy beam once. CONSTITUTION:Control for an overshoot time and an undershoot time is performed by a delay line 110. In other words, the logical arithmetic operation of the output and the write pulse of an input signal and the delay line 110 is performed by open collector AND gates 30-1 to 30-4, and prescribed laser driving output signals (Y1-Y8) can be obtained. In such a way, it is possible to form a stable recording pit on an optical disk with simple circuit constitution even in data with long pulse width.

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