TOUCH DEVICE, WEARABLE DEVICE HAVING THE SAME AND TOUCH RECOGNITION METHOD

• US 20170052618A1
• Filed: 04/29/2015
• Published: 02/23/2017
• Est. Priority Date: 04/30/2014
• Status: Active Grant

• Current Assignee: LG Innotek Company Limited (LG Corporation)
• Original Assignee: LG Innotek Company Limited (LG Corporation)
• Inventors: LEE, Tae Jin, LEE, Sang Young
• Granted Patent: US 10,528,195 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• 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 3/017 Gesture based interaction, e.g. based on a set of recognized hand gestures interaction based on gestures traced on a digitiser G06F3/04883
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G09G 2370/16 Use of wireless transmission of display information
• CPC Class Codes: G09G 5/006 Details of the interface to the display terminal specific for a display terminal using a CRT G09G1/167; using a flat panel G09G3/2096; circuits for interfacing with colour displays G09G5/04

Abstract

Disclosed is a touch device including a display to display a screen image, and a radar system under the display to detect a touch.

Claims

1. A touch device comprising:

a display to display a screen image; and

a radar system to detect a touch,

wherein the radar system comprises a transmission unit to transmit a signal and a reception unit to receive the signal,

the transmission unit comprises a transmission device to generate a radar signal and a transmission antenna to transmit the radar signal, and

the reception unit comprises a reception antenna to receive the radar signal and a reception device to generate reception data from the received radar signal.

2. The touch device of claim 1, wherein the radar system is provided under the display.

3. The touch device of claim 1, wherein a number of reception units is larger than a number of transmission units.

4. The touch device of claim 1, wherein the transmission unit transmits the radar signal at a frequency band in a range of 1 GHz to 15 GHz.

5. The touch device of claim 1, wherein the transmission antenna and the reception antenna comprise radiators.

6. The touch device of claim 1, wherein the display has a first area to display the screen image and a second area adjacent to the first area, and the radar system is provided in the second area.

7. The touch device of claim 1, wherein the transmission antenna and the reception antenna have a spiral pattern.

11. The touch device of claim 1, wherein the transmission antenna and the reception antenna is alternately formed.

12. The touch device of claim 1, further comprising a case to support the display,

wherein the radar system is disposed under the case.

13. The touch device of claim 6, wherein the second area is surround an edge of the first area.

8. A touch recognition method comprising:

transmitting a signal on a touch device;

receiving a signal reflected by a touch; and

recognizing the touch by analyzing the signal,

wherein the transmitting of the signal comprises transmitting a radar signal, and the receiving of the signal comprises receiving the radar signal.

9. The touch recognition method of claim 8, wherein the recognizing of the signal comprises recognizing a distance between the touch device and a touch point.

14. The touch recognition method of claim 8, wherein the recognizing of the signal comprises recognizing the touch of a point within a distance of 4 mm to 1 m from the top surface of the touch device.

15. The touch recognition method of claim 8, wherein the recognizing of the signal comprises recognizing a coordinates (x, y) of a point obtained by projecting the touch point on the top surface of the touch device.

16. The touch recognition method of claim 8, wherein the recognizing of the signal comprises recognizing a gesture or a motion.

17. The touch recognition method of claim 8, wherein the recognizing of the signal comprises recognizing a shape or a velocity of an object making a touch.

10. A wearable device comprising:

a first area to display a screen image; and

a second area adjacent to the first area,

wherein the second area comprises a radar system comprising a transmission unit to transmit a signal and a reception unit to receive the signal,

the transmission unit comprises a transmission device to generate a radar signal and a transmission antenna to transmit the radar signal, and

the reception unit comprises a reception antenna to receive the radar signal and a reception device to generate reception data based on the received radar signal.

18. The wearable device of claim 10, wherein a number of reception units is larger than a number of transmission units.

19. The wearable device of claim 10, wherein the transmission unit transmits the radar signal at a frequency band in a range of 1 GHz to 15 GHz.

20. The wearable device of claim 10, wherein the transmission antenna and the reception antenna comprise radiators.