Digital pen, touch system, and method for providing information thereof

Patent metadata

Field	Value
Publication number	US-2016299585-A1
Application number	US-201615094418-A
Country	US
Kind code	A1
Filing date	Apr 8, 2016
Priority date	Apr 9, 2015
Publication date	Oct 13, 2016
Grant date	—

Abstract

A digital pen, a touch system and a method for providing information thereof are provided. The touch system may include a display apparatus and a digital pen having a battery. The digital pen may be configured to sense a battery status of the battery, generate a signal indicating a location of the stylus with respect to the display apparatus. The signal may have a frequency corresponding to the battery status, and transmit the signal to the display apparatus. The display apparatus may be configured to receive the signal, analyze the signal, and acquire the location of the stylus and the battery status.

First claim

What is claimed is:

1 . A system comprising:
a display apparatus; a stylus comprising a battery, the stylus being configured to:
sense a battery status of the battery,
generate a signal indicating a location of the stylus with respect to the display apparatus, wherein the signal has a frequency corresponding to the battery status, and
transmit the signal to the display apparatus,
wherein the display apparatus is configured to, in response to receiving the signal, analyze the signal and acquire the location of the stylus and the battery status.

2 . The system as claimed in claim 1 , wherein the stylus is further configured to sense state information of the stylus, generate a second signal having a second frequency corresponding to the state information of the stylus, and transmit the second signal to the display apparatus,
wherein the state information includes at least one of a touch coordinate, a touch pressure, and a stylus usage mode.

3 . The system as claimed in claim 1 , wherein the stylus is further configured to, in response to the battery status indicating that a battery voltage of the battery is below a predetermined value, generate the signal having a first frequency, and, in response to the battery status indicating that the battery voltage is above the predetermined value, generate the signal having a second frequency different from the first frequency.

4 . The system as claimed in claim 3 , wherein the display apparatus is further configured to, in response to receiving the signal having the first frequency, output a message indicating that the battery of the stylus has low power.

5 . A method comprising:
sensing, by a stylus comprising a battery, a battery status of the battery; generating, by the stylus, a signal indicating a location of the stylus with respect to the display apparatus, the signal having a frequency corresponding to the battery status; and transmitting the signal from the stylus to a display apparatus.

6 . The method as claimed in claim 5 , further comprising:
sensing, by the stylus, state information of the stylus; generating a second signal having a second frequency corresponding to the state information of the stylus; and transmitting the second signal from the stylus to the display apparatus, wherein the state information includes at least one of a touch coordinate, a touch pressure, and a stylus usage mode.

7 . The method as claimed in claim 5 , wherein the frequency is a first frequency when the battery status indicates that a battery voltage of the battery is below a predetermined value, and the frequency is a second frequency different from the first frequency when the battery status indicates that the battery voltage is above the predetermined value.

8 . The method as claimed in claim 7 , further comprising:
in response to the display apparatus receiving the signal having the first frequency:
analyzing, by the display apparatus, the signal and acquiring the battery status of the battery; and
outputting, by the display apparatus, a message indicating that the battery of the stylus has low power.

9 . A stylus, comprising:
a battery powering the stylus; a sensor configured to sense state information of the stylus, the state information including a battery status of the battery; a signal generator configured to generate a signal indicating a location of the stylus with respect to a display apparatus, the signal having a frequency corresponding to the battery status; and a signal transmitter configured to transmit the signal to the display apparatus.

10 . The stylus as claimed in claim 9 , wherein the sensor further comprises:
a comparer configured to compare a voltage level of the battery with a predetermined voltage value.

11 . The stylus as claimed in claim 9 , wherein the signal is an electromagnetic interference signal, and
wherein the signal generator comprises a frequency divider configured to divide the electromagnetic interference signal into a predetermined frequency according to the battery status of the battery.

12 . The stylus as claimed in claim 9 , wherein the signal is an electromagnetic interference signal, and
wherein the signal generator comprises an oscillation circuit configured to generate the electromagnetic signal having a predetermined frequency by switching a capacitor included in the oscillation circuit according to the battery status of the stylus.

13 . The stylus as claimed in claim 9 , further comprising:
a user recognition unit configured to recognize a user of the digital pen, wherein the signal generator is further configured to generate a second signal having a second frequency corresponding to an identity of the user recognized via the user recognition unit, and wherein the signal transmitter is further configured to transmit the second signal to the display apparatus.

14 . The stylus as claimed in claim 9 , further comprising:
an input unit configured to receive an input associated with a color mode, wherein the signal generator is further configured to generate a second signal having a second frequency corresponding to the color mode selected via the input unit, and wherein the signal transmitter is further configured to transmit the second signal to the display apparatus.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Lee Jae-Kwang
• Park Jeong-Hyun
• Lee Seung-Sin
• Choi Kyoung-Oh
• Choi Young-Hun
• Han Young-Ran

Classifications

• G06F2203/0336

  Mouse integrated fingerprint sensor · CPC title

• G06F3/0416

  Control or interface arrangements specially adapted for digitisers · CPC title

• G06F1/3212

  Monitoring battery levels, e.g. power saving mode being initiated when battery voltage goes below a certain level · CPC title

• G06F3/03545 Primary

  Pens or stylus · CPC title

• G06F1/3262

  Power saving in digitizer or tablet · CPC title