Apparatus with rotating device sensing

Patent metadata

Field	Value
Publication number	US-2022043023-A1
Application number	US-202017060574-A
Country	US
Kind code	A1
Filing date	Oct 1, 2020
Priority date	Aug 5, 2020
Publication date	Feb 10, 2022
Grant date	—

Abstract

A rotating device sensing apparatus includes: a rotating device comprising a detection target unit; a pattern portion formed in the detection target unit in a direction of rotation of the rotating device; a first sensor disposed to face one region of the detection target unit; and a second sensor, spaced apart from the first sensor, and disposed to face another region of the detection target unit, wherein the pattern portion comprises a first pattern portion and a second pattern portion having different widths.

First claim

What is claimed is:

1 . A rotating device sensing apparatus, comprising:
a rotating device comprising a detection target unit; a pattern portion formed in the detection target unit in a direction of rotation of the rotating device; a first sensor disposed to face one region of the detection target unit; and a second sensor, spaced apart from the first sensor, and disposed to face another region of the detection target unit, wherein the pattern portion comprises a first pattern portion and a second pattern portion having different widths.

2 . The apparatus of claim 1 , wherein the pattern portion is formed by alternately forming the first and second pattern portions in the direction of rotation of the rotating device.

3 . The apparatus of claim 1 , wherein the first pattern portion and the second pattern portion are connected continuously so as to form a shape of a single band having a gradually varying width.

4 . The apparatus of claim 1 , wherein a shape of the pattern portion in the region corresponding to a position of the first sensor and a shape of the pattern portion in the other region corresponding to a position of the second sensor are different.

5 . The apparatus of claim 1 , wherein the first sensor and the second sensor are spaced apart to have a predetermined angle with a center axis of the rotating device.

6 . The apparatus of claim 5 , wherein a sensing surface of the second sensor has an angle of inclination of 45° with a sensing surface of the first sensor.

7 . The apparatus of claim 1 , further comprising a frame in which the rotating device is disposed,
wherein one surface of the frame is inclinedly disposed to have a predetermined angle with another surface of the frame, and the first and second sensors are respectively disposed to have the predetermined angle with respect to an inner side surface of the one surface and an inner side surface of the other surface of the frame.

8 . The apparatus of claim 7 , further comprising a substrate for mounting the first and second sensors,
wherein the substrate is bent to surround an external side surface of the one surface of the frame and an external side surface of the other surface of the frame.

9 . The apparatus of claim 1 , wherein
the pattern portion is formed of a metal material, and the first sensor and the second sensor each comprise a sensing coil.

10 . The apparatus of claim 1 , wherein
the first sensor and the second sensor are respectively configured to sense changes in inductance based on a rotation of the rotating device, and the change in inductance sensed by the first sensor and the change in inductance sensed by the second sensor have a predetermined phase difference based on a dispositional relationship between the first and second sensors.

11 . The apparatus of claim 10 , wherein the changes in inductance respectively sensed by the first and second sensors correspond to either one of a sine function and a cosine function.

12 . A rotating device sensing apparatus, comprising:
a rotating device comprising a detection target unit; a pattern portion formed in a direction of rotation of the rotating device and having a shape of a single band surrounding the detection target unit; a first sensor disposed to face one region of the detection target unit; and a second sensor, spaced apart from the first sensor, to have a predetermined angle with the first sensor.

13 . The apparatus of claim 12 , wherein the single band-shape of the pattern portion has a width gradually varying in the direction of rotation of the rotating device.

14 . The apparatus of claim 13 , wherein a width of the pattern portion corresponding to a position of the first sensor and a width of the pattern portion corresponding to a position of the second sensor are different.

15 . The apparatus of claim 12 , wherein a sensing surface of the second sensor has an angle of inclination of 45° with a sensing surface of the first sensor.

16 . The apparatus of claim 12 , further comprising a flexible substrate, wherein the first and second sensors are mounted on a same surface of the flexible substrate.

17 . An electronic device, comprising:
a rotating device comprising an electrically conductive pattern portion formed in a direction of rotation of the rotating device; and a first sensor and a second sensor configured to sense respective changes in induction in response to a rotation of the rotating device, and respectively disposed to face different portions of the pattern portion.

18 . The device of claim 17 , wherein the electronic device is a smart watch, and the rotating device comprises a crown of the smart watch configured to be rotated by a user.

19 . The device of claim 17 , wherein the pattern portion comprises a wave-patterned band shape having a varying width.

Assignees

• Samsung Electro Mech

Inventors

• Kwon Si Young
• Kim Yong Wook

Classifications

• G06F3/011 Primary

  Arrangements for interaction with the human body, e.g. for user immersion in virtual reality (blind teaching G09B21/00) · CPC title

• G01P13/04 Primary

  Indicating positive or negative direction of a linear movement or clockwise or anti-clockwise direction of a rotational movement · CPC title

• G01B7/30

  for measuring angles or tapers; for testing the alignment of axes · CPC title

• G01D5/2258 Primary

  by a movable ferromagnetic element, e.g. core · CPC title

• G01D5/2216

  by a movable ferromagnetic element, e.g. a core · CPC title