Touch pen with erasure function

• US 20090153525A1
• Filed: 08/26/2008
• Published: 06/18/2009
• Est. Priority Date: 12/12/2007
• Status: Abandoned Application

• Current Assignee: MiTAC International Corporation (MiTAC Holdings Corp.)
• Original Assignee: MiTAC International Corporation (MiTAC Holdings Corp.)
• Inventors: Chang, Sheng Lung
• Application Number:
  US12/229,734
• Publication Number:
  US 20090153525A1
• Time in Patent Office: Days
• US Class Current: 345/179
• CPC Class Codes: G06F 3/03545 Pens or stylus
• CPC Class Codes: G06F 3/04883 for inputting data by handwriting, e.g. gesture or text

Abstract

A touch pen with erasure function, applied for an electronic apparatus having a touch screen, comprises a body and a sensing unit. The body holds a accommodating space for disposing the sensing unit therein, and has a writing end and an erasing end. While detecting that the touch pen is held with the writing end located close to the touch screen, the sensing unit generates a first signal to the electronic device for allowing the touch pen to write a message on the touch screen. When detecting that the touch pen is held with the erasing end located close to the touch screen, the sensing unit generates a second signal to the electronic device for allowing the touch pen to erase the message on the touch screen.

Claims

1. A touch pen with erasure function, applicable for an electronic apparatus having a touch screen, the touch pen comprising:

a body holding an accommodating space, and having a writing end and an erasing end; and

a sensing unit disposed in the accommodating space, wherein while detecting that the writing end located close to the touch screen, the sensing unit generates a first signal for allowing the writing end for writing a message on the touch screen, and while detecting that the erasing end located close to the touch screen, the sensing unit generates a second signal for allowing the erasing end for erasing the message on the touch screen.

2. The touch pen with erasure function of claim 1, wherein the electronic device has a signal receiver for receiving the first signal and the second signal.

3. The touch pen with erasure function of claim 1, further comprising a signal transmitter for transmitting the first signal and the second signal.

4. The touch pen with erasure function of claim 1, wherein the signal transmitter is a Bluetooth module, a WiFi module or a RFID module.

5. The touch pen with erasure function of claim 1, wherein the sensing unit is a mercury switch or a mechanical-type switch.

6. The touch pen with erasure function of claim 5, wherein the mercury switch generates the first signal or the second signal according to the location of mercury contained in the mercury switch.

7. The touch pen with erasure function of claim 5, wherein the mechanical-type switch generates the first signal and the second signal according to the location of an electric conductor contained in the mechanical-type switch.

8. The touch pen with erasure function of claim 1, wherein the sensing unit is a gravity sensor (G-sensor).

9. The touch pen with erasure function of claim 8, wherein when a user rotates the touch pen to change the position status of the writing end and the erasing end, the G-sensor detects an acceleration of the touch pen, and generates the first signal or the second signal based on the detected result.