发明名称 |
Apparatus for digital RMS detection and peak detection in head-disk contact detection |
摘要 |
An apparatus comprises a root mean square ('RMS') value generator; an integrator coupled to the RMS value generator; a sample and hold switch coupled to an output of the integrator; a capacitor coupled between the sample and hold switch and a ground; an input of the analog to digital convertor ('ADC') coupled to the capacitor; an adder coupled to an output of the ADC; a register, wherein an output of the register is coupled to an input of the adder; and wherein an output of the adder is coupled to an input of the register; and a logic coupled to the register for comparing an output of the register to an RMS threshold value for determining whether a touch-down has occurred. |
申请公布号 |
US8625214(B2) |
申请公布日期 |
2014.01.07 |
申请号 |
US201113224696 |
申请日期 |
2011.09.02 |
申请人 |
TAKEUCHI TORU;SHARIFI REZA;TEXAS INSTRUMENTS INCORPORATED |
发明人 |
TAKEUCHI TORU;SHARIFI REZA |
分类号 |
G11B27/36;G11B15/48;G11B20/10 |
主分类号 |
G11B27/36 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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