APPARATUS AND METHOD FOR IDENTIFYING MOTION OF OBJECT

• US 20130068016A1
• Filed: 06/14/2011
• Published: 03/21/2013
• Est. Priority Date: 06/14/2010
• Status: Abandoned Application

• Current Assignee: Sitronix Technology Corporation
• Original Assignee: Sitronix Technology Corporation
• Inventors: Chen, Chung-Yuan, Chang, Yu-Cheng
• Application Number:
  US13/700,782
• Publication Number:
  US 20130068016A1
• Time in Patent Office: Days
• US Class Current: 73/488
• CPC Class Codes: G06F 2203/04101 2.5D-digitiser, i.e. digitiser detecting the X/Y position of the input means, finger or stylus, also when it does not touch, but is proximate to the digitiser's interaction surface and also measures the distance of the input means within a short range in the Z direction, possibly with a separate measurement setup
• CPC Class Codes: G06F 3/03 Arrangements for converting the position or the displacement of a member into a coded form
• CPC Class Codes: H03K 17/962 Capacitive touch switches

Abstract

The present invention relates to an apparatus for identifying motions of an object, which is used for detecting motions of at least an object. A sensing plate senses the object and produces at least a sensing signal. A processing circuit is coupled to the sensing plate. It gives at least a moving speed along at least one axis, at least a variation in the sensed value between the object and the sensing plate, or at least a variation in the contact area according to the sensing signal. Then it produces a corresponding control signal according to the moving speed, the variation in the sensed value, or the variation in the contact area. Thereby, the present invention further produces a corresponding control signal by means of the variations in the sensed value. Hence, the control signal can be produced without touching the touch panel and thus increasing the lifetime of the touch panel.

Claims

1. An apparatus for identifying motions of an object, used for detecting motions of at least an object, comprising:

a sensing plate, sensing said object and producing at least a sensing signal; and

a processing circuit, coupled to said sensing plate, giving at least a moving speed of said object along at least one axis or at least a variation in the energy between said object and said sensing plate or at least a variation in the contact area between said object and said sensing plate, and producing a corresponding control signal according to said moving speed, said variation in the energy, or said variation in the contact area.

2. The apparatus for identifying motions of an object of claim 1, wherein said processing circuit produces a first moving speed, a first variation in the energy, or a first variation in the contact area in a first time interval according to said sensing signal, produces a second moving speed, a second variation in the energy, or a second variation in the contact area in a second time interval according to said sensing signal, compares said first moving speed, said first variation in the energy, or said first variation in the contact area with a first threshold value, and compares said second moving speed, said second variation in the energy, or said second variation in the contact area with a second threshold value for producing said control signal.

3. The apparatus for identifying motions of an object of claim 2, wherein said processing circuit compares and judges that said first moving speed, said first variation in the energy, or said first variation in the contact area is greater than said first threshold value, compares and judges that said second moving speed, said second variation in the energy, or said second variation in the contact area is greater than said second threshold value, and then produces said control signal correspondingly.

4. The apparatus for identifying motions of an object of claim 1, wherein said processing circuit comprises:

a multiplexer, coupled to a plurality of scan lines and a plurality of detecting lines of said sensing plate for transmitting said sensing signal;

a converting circuit, coupled to said multiplexer, and receiving and converting said sensing signal for producing a converting signal;

an analog-to-digital converting circuit, coupled to said converting circuit, and converting said converting signal for producing a digital signal; and

a microprocessor, coupled to said analog-to-digital converting circuit, giving said moving speed along at least one axis or said variation in the energy or said variation in the contact area of said object according to said sensing signal, and producing said corresponding control signal according to said moving speed or said variation in the energy or said variation in the contact area.

5. A method for identifying motions of an object, used for detecting motions of at least an object, comprising steps of:

sensing said object and producing at least a sensing signal;

giving at least a moving speed of said object along at least one axis according to said sensing signal; and

producing a corresponding control signal according to said moving speed.

6. The method for identifying motions of an object of claim 5, wherein said step of producing said corresponding control signal according to said moving speed further comprises steps of:

producing a first moving speed in a first time interval and a second moving speed in a second time interval according to said sensing signal; and

comparing said first moving speed with a first threshold value and said second moving speed with a second threshold value for producing said control signal correspondingly.

7. The method for identifying motions of an object of claim 6, wherein said control signal is produced correspondingly when said first moving speed is greater than said first threshold value and said second moving speed is greater than said second threshold value.

8. A method for identifying motions of an object, used for detecting motions of at least an object, comprising steps of:

sensing said object and a sensing plate and producing at least a sensing signal;

giving at least a variation in the energy between said object and said sensing plate according to said sensing signal; and

producing a corresponding control signal according to said variation in the energy.

9. The method for identifying motions of an object of claim 8, wherein said step of producing said corresponding control signal according to said variation in the energy further comprises steps of:

producing a first variation in the energy in a first time interval and a second variation in the energy in a second time interval according to said sensing signal; and

comparing said first variation in the energy with a first threshold value and said second variation in the energy with a second threshold value for producing said control signal correspondingly.

10. The method for identifying motions of an object of claim 9, wherein said control signal is produced correspondingly when said first variation in the energy is greater than said first threshold value and said second variation in the energy is greater than said second threshold value.

11. A method for identifying motions of an object, used for detecting motions of at least an object, comprising steps of:

sensing said object contacting a sensing plate and producing at least a sensing signal;

giving at least a variation in the contact area between said object and said sensing plate according to said sensing signal; and

producing a corresponding control signal according to said variation in the contact area.

12. The method for identifying motions of an object of claim 11, wherein said step of producing said corresponding control signal according to said variation in the contact area further comprises steps of:

producing a first variation in the contact area in a first time interval and a second variation in the contact area in a second time interval according to said sensing signal; and

comparing said first variation in the contact area with a first threshold value and said second variation in the contact area with a second threshold value for producing said control signal correspondingly.

13. The method for identifying motions of an object of claim 12, wherein said control signal is produced correspondingly when said first variation in the contact area is greater than said first threshold value and said second variation in the contact area is greater than said second threshold value.