Remote scroll wheel sensing using a cable

• US 20040150622A1
• Filed: 02/05/2003
• Published: 08/05/2004
• Est. Priority Date: 02/05/2003
• Status: Active Grant

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Corporation
• Inventors: Bohn, David D.
• Granted Patent: US 7,098,892 B2
• Time in Patent Office: Days
• US Class Current: 345/163
• CPC Class Codes: G06F 3/0312 for tracking the rotation of a spherical or circular member, e.g. optical rotary encoders used in mice or trackballs using a tracking ball or in mouse scroll wheels tracking relative movement in co-operation with a regularly or irregularly patterned surface, e.g. as in optical mice G06F3/0317; constructional details of scroll or thumb-wheels G06F3/0362; optical rotary encoders G01D5/3473
• CPC Class Codes: G06F 3/03543 Mice or pucks G06F3/03541 takes precedence
• CPC Class Codes: G06F 3/0362 with detection of 1D translations or rotations of an operating part of the device, e.g. scroll wheels, sliders, knobs, rollers or belts

Abstract

A scrolling apparatus is disclosed that includes a rotatable scroll wheel and a sensor assembly coupled mechanically through a flexible cable. The sensor assembly has an encoder wheel that rotates in response to rotation of the scroll wheel. The rotational axis of the encoder wheel is axially displaced from the rotational axis of scroll wheel, and the diameter of the encoder wheel may be greater than the diameter of a conventional encoder wheel. The differences in diameter of the scroll wheel and encoder wheel may be utilized to provide the scrolling apparatus with relatively high resolution. In addition, the flexible cable permits the scroll wheel to be mounted within a tilting mechanism.

Claims

1. An input device for scrolling an image relative to a display screen, the input device comprising:

a scroll wheel;

a flexible cable; and

an encoder wheel mechanically coupled to the scroll wheel by the flexible cable to induce rotation of the encoder wheel in response to the rotation of the scroll wheel.

2. The input device recited in claim 1, wherein the flexible cable includes a first end portion positioned adjacent the scroll wheel and a second end portion positioned adjacent the encoder wheel, the first end portion being angularly-displaced in a range of 45°

to 135°

relative to the second end portion.

3. The input device recited in claim 1, wherein the scroll wheel is mounted on a first axle and the encoder wheel is mounted on a second axle, a rotational axis of the first axle being offset in a range of 45°

to 135°

from a rotational axis of the second axle.

4. The input device recited in claim 3, wherein an end of the flexible cable is integrally molded to at least one of the first axle and the second axle.

5. The input device recited in claim 3, wherein an end of the flexible cable is physically crimped to at least one of the first axle and the second axle.

6. The input device recited in claim 1, further comprising a hollow flexible sheath, and wherein the flexible cable is positioned within the flexible sheath.

7. The input device recited in claim 1, wherein the scroll wheel has a first diameter and the encoder wheel has a second diameter, the first diameter being less than the second diameter.

8. The input device recited in claim 1, wherein a material forming the flexible cable is selected from a group consisting of metal materials and polymer materials.

9. The input device recited in claim 8, wherein the cable consists of a single strand of the material.

10. The input device recited in claim 1, further comprising a housing configured to rest the computer input device on a supporting surface, wherein the scroll wheel and the encoder wheel are oriented perpendicular relative to the supporting surface.

11. The input device recited in claim 1, further comprising a housing configured to rest the computer input device on a supporting surface, wherein the scroll wheel is oriented perpendicular relative to the supporting surface and the encoder wheel is oriented parallel to the supporting surface.

12. The input device recited in claim 1, further including a light source and a light sensor positioned on opposite sides of the encoder wheel.

13. The input device recited in claim 12, wherein a plurality of openings are defined in the encoder wheel, and light from the light source passes through the openings and toward the light detector when the encoder wheel rotates.

14. The input device recited in claim 1, further comprising a housing having an aperture, wherein the scroll wheel protrudes through the aperture.

15. The input device recited in claim 14, wherein the scroll wheel is mounted to permit displacement thereof to activate a switch located within the housing.

16. The input device recited in claim 14, wherein the scroll wheel is mounted to tilt with respect to the housing.

17. The input device recited in claim 1, wherein the input device is one of a mouse, a trackball, and a keyboard.

18. The input device recited in claim 17, further comprising a housing having an aperture, and a light source and a light sensor positioned on opposite sides of the encoder wheel;

wherein the scroll wheel protrudes through the aperture; and

wherein the scroll wheel is mounted on a first axle and the encoder wheel is mounted on a second axle such that a rotational axis of the first axle being offset from a rotational axis of the second axle.

19. An input device comprising:

a housing having at least one aperture therein;

a scroll wheel having a substantially circular configuration such that a portion of the scroll wheel extends through the aperture and is accessible for rotational manipulation by a user;

a flexible cable having a first end portion and an opposing second end portion; and

an encoder wheel, wherein the first end portion of the flexible cable is mechanically coupled to the scroll wheel and the second end portion of the cable is mechanically coupled to the encoder wheel and the flexible cable being configured to rotate the encoder wheel in response to rotation of the scroll wheel.

20. An input device comprising:

a housing having at least one aperture therein,

a scroll wheel having a substantially circular configuration such that a portion of the scroll wheel extends through the aperture and is accessible for endless rotational manipulation by a user;

a flexible cable having a first end portion and an opposing second end portion; and

an encoder wheel, wherein the first end portion of the flexible cable is mechanically coupled to the scroll wheel and the second end portion of the cable is mechanically coupled to the encoder wheel and the flexible cable being configured to rotate the encoder wheel by transferring torsional force induced by rotation of the scroll wheel to the encoder wheel; and

a light source and a light sensor positioned on opposite sides of the encoder wheel configured to detect rotation of the encoder wheel;

wherein the input device is one of a mouse, a trackball, and a keyboard.