公开(公告)号：JPS57125817A

公开(公告)日：1982-08-05

申请号：JP1322981

申请日：1981-01-30

Applicant: Sharp Corp

Inventor： KITA SHIGEHARU ,  ODA YUKIHISA ,  FUKUDA HIROAKI ,  MASAKI RIYOUICHI ,  HARA TAKEO

IPC: G01D5/36

CPC classification number: G01D5/36

Abstract: PURPOSE:To extend the set range of a threshold level of a shaping circuit, by forming the blades of a rotor so that their width and interval are different in size and have a prescribed ratio to the width of the photodetecting part of a transmission type photosensor. CONSTITUTION:The width of a photodetecting part 3 of a transmission type photosensor 1, the interval of blades 8a of a rotor 17, and the width of blades 8a are denoted as (a), (c), and (b), respectively, and the width (b) and the interval (c) are different in size and have a prescribed ratio to the width (a).

Abstract translation: 目的：通过形成转子的叶片使其宽度和间隔尺寸不同，并且与透射型光电传感器的受光部分的宽度相比具有规定的比例，来扩展整形电路的阈值电平的设定范围 。 构成：透射型光电传感器1的受光部3的宽度，转子17的叶片8a的间隔和叶片8a的宽度分别表示为（a），（c）和（b） 并且宽度（b）和间隔（c）的尺寸不同，并且与宽度（a）具有规定的比例。

公开(公告)号：JPS59210320A

公开(公告)日：1984-11-29

申请号：JP8461483

申请日：1983-05-13

Applicant: Sharp Corp

Inventor： MASAKI RIYOUICHI ,  SUMIYOSHI KENJI ,  FUKUDA HIROAKI

IPC: G01D5/245 ,  G01D5/18

Abstract: PURPOSE: To detect high-density record precisely as a high output by composing one side of a bridge circuit of plural element groups which are arranged shifting in 1/2λ relation.
CONSTITUTION: Magnetic patterns S, N, S... recorded on a magnetic medium come close to the position of a magneto-resistance element alternately through the rotation of a magnetic drum, and each element varies in resistance owing a leak magnetic field to perform conversion into an electric signal. Then, the magneto-resistance element 3 has eight elements to generate a signal of each phase. The elements A
1 WA
8 are arranged at intervals of 1/2λ, and respective couples of them are arranged at intervals of 1/4λ. Elements B
1 WB
8 shift in position from the group A by 7/8λ.
COPYRIGHT: (C)1984,JPO&Japio

Abstract translation: 目的：通过组合以1 /2lλ关系排列的多个元件组的桥式电路的一侧，将高密度记录精确地检测为高输出。 构成：记录在磁性介质上的磁性图案S，N，S ...通过磁鼓的旋转而交替地接近磁阻元件的位置，并且每个元件由于泄漏磁场而在电阻上变化以执行 转换为电信号。 然后，磁阻元件3具有八个元件，以产生每个相位的信号。 元件A1-A8以1 /2λ的间隔排列，并且它们的相应的一对以1/4/4的间隔排列。 元素B1-B8从A组移位7 / 8lambda。