发明名称 Magnetic encoder with high resolution of data signal recording at reduced recording pitch
摘要 A magnetic encoder comprises a sensor having a plurality of magnetoresistive (MR) elements placed in juxtaposed position relative to a magnetic recording medium upon which data signals are recorded employing a recording pitch, A. Output signals produced by the MR elements connected in a plurality of bridge circuits are formed by relative movement between the MR elements and the magnetic recording medium. The MR elements are positioned at A/n intervals, wherein n is an integer and n>/=8. A multiplier circuit is connected to receive the output signals from the MR element bridge circuits and provide a plurality of phase shifted output signals corresponding to a A/N pitch interval of recording pitch, A, wherein N is an integer and N>/=2.
申请公布号 US5036276(A) 申请公布日期 1991.07.30
申请号 US19900504590 申请日期 1990.04.04
申请人 SEIKO EPSON CORPORATION 发明人 AIZAWA, HITOMI
分类号 G01D5/245;G01D5/14;G01D5/16;G01D5/244 主分类号 G01D5/245
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