ACTIVE STYLUS

• US 20120218232A1
• Filed: 10/20/2011
• Published: 08/30/2012
• Est. Priority Date: 02/25/2011
• Status: Active Grant

• Current Assignee: E Ink Holdings Incorporated
• Original Assignee: E Ink Holdings Incorporated
• Inventors: HSU, Suei-Shih
• Granted Patent: US 8,836,674 B2
• Time in Patent Office: Days
• US Class Current: 345/179
• CPC Class Codes: G06F 3/03545 Pens or stylus

Abstract

An active stylus includes a tube, a signal emitting module, a power module, an electrical energy storage device, a movable element and an energy transformation module. The signal emitting module, the power module, the electrical energy storage device and the energy transformation module are disposed in the tube. The power module is electrically coupled to the signal emitting module, and the electrical energy storage device and the energy transformation module are electrically coupled to the power module. The movable element is movable in the tube. The energy transformation module is configured for transforming energy generated by motion of the movable element into electrical energy. The electrical energy transformed by the energy transformation module is stored in the electrical energy storage device by the power module.

Claims

1. An active stylus, comprising:

a tube;

a signal emitting module disposed in the tube;

a power module disposed in the tube and electrically coupled to the signal emitting module;

an electrical energy storage device disposed in the tube and electrically coupled to the power module;

a movable element movably disposed in the tube; and

an energy transformation module disposed in the tube and electrically coupled to the power module, the energy transformation module being configured for transforming energy generated by motion of the movable element into electrical energy, and the electrical energy transformed by the energy transformation module being stored in the electrical energy storage device by the power module.

2. The active stylus according to claim 1, wherein the movable element is a heavy block, the movable element is configured for impacting the energy transformation module, and the energy transformation module is configured for transforming kinetic energy generated by the motion of the movable element into the electrical energy.

3. The active stylus according to claim 1, wherein the electrical energy storage device is a rechargeable battery.

4. The active stylus according to claim 1, wherein the signal emitting module is an electromagnetic signal emitting module.

5. The active stylus according to claim 1, further comprising a fixed sleeve, wherein the fixed sleeve is disposed in the tube, the energy transformation module is fixed in the fixed sleeve, and the movable element is movably disposed in the fixed sleeve.

6. An active stylus, comprising:

a tube;

a signal emitting module disposed in the tube;

a power module disposed in the tube and electrically coupled to the signal emitting module;

an electrical energy storage device movably disposed in the tube and electrically coupled to the power module; and

an energy transformation module disposed in the tube and electrically coupled to the power module, the energy transformation module being configured for transforming energy generated by motion of the electrical energy storage device into electrical energy, and the electrical energy transformed by the energy transformation module being stored in the electrical energy storage device by the power module.

7. The active stylus according to claim 6, wherein the electrical energy storage device is a rechargeable battery.

8. The active stylus according to claim 6, wherein the signal emitting module is an electromagnetic signal emitting module.