Abstract: A position sensing mechanism provided by the invention comprises an encoding element as a sensing signal source, a reading element for sensing signals of the signal source, and a processing unit for receiving and analyzing sensing signals output by the reading element, the position sensing mechanism has a main technical feature lying in a magneto-resistive unit in the reading element for sensing signals of the signal source being a tunneling magneto-resistor (TMR), and two layers of magnetic moments of a reference layer and a free layer of the tunneling magneto-resistor being perpendicular to each other, and in the reference layer and the free layer with the magnetic moments being perpendicular to each other, the magnetic moment of one of the layers is parallel to a film surface, and the magnetic moment of the other layer is perpendicular to the film surface.

Abstract: A position sensing mechanism provided by the invention comprises an encoding element as a sensing signal source, a reading element for sensing signals of the signal source, and a processing unit for receiving and analyzing sensing signals output by the reading element, the position sensing mechanism has a main technical feature lying in a magneto-resistive unit in the reading element for sensing signals of the signal source being a tunneling magneto-resistor (TMR), and two layers of magnetic moments of a reference layer and a free layer of the tunneling magneto-resistor being perpendicular to each other, and in the reference layer and the free layer with the magnetic moments being perpendicular to each other, the magnetic moment of one of the layers is parallel to a film surface, and the magnetic moment of the other layer is perpendicular to the film surface.

Abstract: An optical positioning measurement device includes a light source module operable to emit light, an encoder module and a sensor module. The sensor module is configured to output electric signals relating to luminous flux of light received thereby via the encoder module. The encoder module having a first incremental code portion, a second incremental code portion and an absolute code portion. The first incremental code portion includes multiple first incremental code patterns that are equally distributed. The second incremental code portion includes multiple second incremental code patterns that are equally distributed. The second incremental code patterns are arranged more loosely than the first incremental code patterns.

Abstract: A linear position detecting device applied to a linear motion system for motion measurement is provided. The linear position detecting device comprises a coding element and a detecting element corresponding to the coding element for retrieving the signal of the coding element to provide the position information. The coding element comprises a base, a first coding unit and a second coding unit wherein the base comprises an axial direction parallel to a length of the base, and a radial direction perpendicular to the axial direction. The first coding unit is configured on the base and comprises a plurality of first tracks extended along the axial direction and alternately arranged along the radial direction. The second coding unit is configured on the base and adjacent to the first coding unit, and comprises a plurality of second tracks wherein the second tracks are extended along the radial direction and alternately arranged along the axial direction.

Abstract: A linear position detecting device applied to a linear motion system for motion measurement is provided. The linear position detecting device comprises a coding element and a detecting element corresponding to the coding element for retrieving the signal of the coding element to provide the position information. The coding element comprises a base, a first coding unit and a second coding unit wherein the base comprises an axial direction parallel to a length of the base, and a radial direction perpendicular to the axial direction. The first coding unit is configured on the base and comprises a plurality of first tracks extended along the axial direction and alternately arranged along the radial direction. The second coding unit is configured on the base and adjacent to the first coding unit, and comprises a plurality of second tracks wherein the second tracks are extended along the radial direction and alternately arranged along the axial direction.

Abstract: A torsion detecting device for a rotary shaft is provided. The position detecting device for a rotary shaft comprises a shaft and two encoding elements disposed at two portions of the shaft with a predetermined distance. Each encoding element comprises a first coding unit, a second coding unit and a detecting unit wherein the first coding unit and the second coding unit are coaxial to the shaft. Therefore, the detecting unit detects the signal of the first coding unit and the second coding unit to retrieve the angular position of the two portions and provide the torsion in accordance with the rotation angle difference and the predetermined distance.

Abstract: A position detecting device for a rotary shaft is provided. The position detecting device for a rotary shaft comprises a shaft, a coding element and a detecting element. The coding element comprises a body, a first coding unit and a second coding unit wherein the body is disposed on the shaft and coaxial to the shaft, and the first coding unit and the second coding unit are configured on the body. The first coding unit comprises a plurality of first tracks in an annular arrangement. The detecting element is disposed on an additional part and corresponding to the coding element for retrieving the signal of the first coding unit and the second coding unit.

Abstract: An encoder includes a main body and a toothed encoding unit. The main body is made of material with magnetic permeability. The toothed encoding unit is made of material with magnetic permeability, and includes a toothed encoding set and a position toothed encoding set that are disposed on the main body. The toothed encoding set includes a plurality of recesses that are disposed in a first direction. Each of the recesses of the toothed encoding set extends in a second direction that is transverse to the first direction. The position toothed encoding set includes a plurality of recesses that are disposed in the second direction. Each of the recesses of the position toothed encoding set extends in the first direction.

Abstract: A magnetic encoder has an annular main body and a magnetic encoding unit. The main body is made of material with magnetic permeability, surrounds a central axis, and includes a first surface and a second surface opposite to said first surface. The magnetic encoding unit is disposed on one of the first surface and the second surface of the main body, and includes a plurality of first and second magnetic poles, each of which is annular and is centered at the central axis. The first and second magnetic poles are arranged in an alternating sequence.

Abstract: A magnetic encoder has an annular main body, a magnetic encoding unit and a position encoding unit. The main body is made of material with magnetic permeability, surrounds a central axis, and includes a first surface and a second surface opposite to said first surface. The magnetic encoding unit is disposed on the first surface of the main body, and includes a plurality of first and second magnetic poles, each of which is annular and is centered at the central axis. The annular position encoding unit is centered at the central axis, that is adjacent to the magnetic encoding unit, and that is disposed on the one of the first surface on which the magnetic encoding unit is disposed. The first and second magnetic poles are arranged in an alternating sequence.

Abstract: A texture inducing structure for alloy films is provided. The texture inducing structure includes a substrate, a texture-inducing layer and a deposition layer. The texture-inducing layer is formed on the substrate. The texture-inducing layer has an intrinsically strong crystalline texture, a texture coefficient of the texture-inducing layer is greater than 2, and a thickness of the texture-inducing layer is ranged from 0.1 ?m to 6 ?m. The deposition layer is formed on the texture-inducing layer. A texture of the deposition layer is induced by the texture-inducing layer thereby changing the magnetic anisotropy and the magnetic strength of the deposition layer, a thickness of the deposition layer is ranged from 1 ?m˜60 ?m, and the thickness of the deposition layer is greater than that of the texture-inducing layer.

Abstract: An optical positioning measurement device includes a light source module operable to emit light, an encoder module and a sensor module. The sensor module is configured to output electric signals relating to luminous flux of light received thereby via the encoder module. The encoder module having a first incremental code portion, a second incremental code portion and an absolute code portion. The first incremental code portion includes multiple first incremental code patterns that are equally distributed. The second incremental code portion includes multiple second incremental code patterns that are equally distributed. The second incremental code patterns are arranged more loosely than the first incremental code patterns.

Abstract: An absolute position readout apparatus includes an encoder device and a readout device. The readout device includes multiple first and second magnetic sensing components that correspond to an absolute track of the encoder device, and a third magnetic sensing component and a fourth magnetic sensing components that correspond to an incremental track of the encoder device. The third magnetic sensing component is configured to be spaced apart from the fourth magnetic sensing component by a specific distance, so as to prevent misreading of absolute position information from the first or second magnetic sensing components being at positions corresponding to boundaries between adjacent magnetized regions of the absolute track.

Abstract: An absolute position readout apparatus includes an encoder device and a readout device. The readout device includes multiple first and second magnetic sensing components that correspond to an absolute track of the encoder device, and a third magnetic sensing component and a fourth magnetic sensing components that correspond to an incremental track of the encoder device. The third magnetic sensing component is configured to be spaced apart from the fourth magnetic sensing component by a specific distance, so as to prevent misreading of absolute position information from the first or second magnetic sensing components being at positions corresponding to boundaries between adjacent magnetized regions of the absolute track.

Abstract: A texture inducing structure for alloy films is provided. The texture inducing structure includes a substrate, a texture-inducing layer and a deposition layer. The texture-inducing layer is formed on the substrate. The texture-inducing layer has an intrinsically strong crystalline texture, a texture coefficient of the texture-inducing layer is greater than 2, and a thickness of the texture-inducing layer is ranged from 0.1 ?m to 6 ?m. The deposition layer is formed on the texture-inducing layer. A texture of the deposition layer is induced by the texture-inducing layer thereby changing the magnetic anisotropy and the magnetic strength of the deposition layer, a thickness of the deposition layer is ranged from 1 ?m˜60 ?m, and the thickness of the deposition layer is greater than that of the texture-inducing layer.

Abstract: An absolute position detecting device and method are provided. The absolute position detecting device utilizes the incremental magnetization on a magnetic encoding ruler with two different pole widths, such that elliptical Lissajous curves may be obtained by magnetoresistive sensors. The absolute position may be obtained by determining the region of the signals on the ellipses read by the magnetoresistive sensors.

Abstract: An absolute position detecting device and method are provided. The absolute position detecting device utilizes the incremental magnetization on a magnetic encoding ruler with two different pole widths, such that elliptical Lissajous curves may be obtained by magnetoresistive sensors. The absolute position may be obtained by determining the region of the signals on the ellipses read by the magnetoresistive sensors.