Touch system

Patent metadata

Field	Value
Publication number	US-10996790-B2
Application number	US-201916664974-A
Country	US
Kind code	B2
Filing date	Oct 28, 2019
Priority date	Nov 2, 2018
Publication date	May 4, 2021
Grant date	May 4, 2021

Abstract

A touch system includes a touch panel; an active pen configured to generate a signal; and a touch controller electrically connected to the touch panel and configured to detect the signal. When the touch controller supports at least two protocols, a protocol of the touch controller is automatically switched to one of the at least two protocols. The active pen automatically detects the one of the at least two protocols, and a protocol of the active pen is switched to the one of the at least two protocols.

First claim

What is claimed is:

1. A touch system, comprising:
a touch panel;
an active pen configured to generate a signal; and
a touch controller electrically coupled to the touch panel and configured to detect the signal,
wherein when the touch controller supports at least two protocols, a protocol of the touch controller is automatically switched to one of the at least two protocols, the active pen automatically detects the one of the at least two protocols of the touch controller, and a protocol of the active pen is switched to the one of the at least two protocols of the touch controller,
wherein the touch controller automatically switches, in response to a specific rule, to the one of the at least two protocols, and the specific rule comprises at least one of a report rate, a pressure level of the active pen, a tilt angle, and a power saving level,
wherein the active pen automatically detects that the protocol of the touch controller is a one-way protocol or a two-way protocol,
when the protocol of the touch controller is the one-way protocol, the touch controller only receives an active pen signal transmitted by the active pen and does not transmit a controller signal,
when the protocol of the touch controller is the two-way protocol, the touch controller transmits the controller signal having the two-way protocol and receives the active pen signal transmitted by the active pen,
wherein the active pen transmits the active pen signal having a specific type of the one-way protocol to detect a type of the touch controller having the one-way protocol and transmits plural types of the active pen signals having the two-way protocols to detect plural types of the touch controllers having the two-way protocols.

2. The touch system according to claim 1 , wherein the active pen transmits the active pen signal having the one-way protocol to the touch controller, and the active pen determines that the protocol of the touch controller is the one-way protocol when the active pen does not receive the controller signal.

3. The touch system according to claim 1 , wherein the active pen determines that the protocol of the touch controller is the two-way protocol when the active pen receives the controller signal having the two-way protocol.

4. A touch system, comprising:
a touch panel;
an active pen configured to generate a signal; and
a touch controller electrically coupled to the touch panel and configured to detect the signal,
wherein when the touch controller supports at least two protocols; a protocol of the touch controller is automatically switched to one of the at least two protocols to pair with the active pen,
wherein the touch controller automatically switches, in response to a specific rule, to the one of the at least two protocols, and the specific rule comprises at least one of a report rate, a pressure level of the active pen, a tilt angle, and a power saving level,
wherein the touch controller automatically detects that a protocol of the active pen is a one-way protocol or a two-way protocol,
when the protocol of the active pen is the one-way protocol, the active pen only, transmits an active pen signal and does not receive a controller signal having the two-way protocol,
when the protocol of the active pen is the two-way protocol, the active pen transmits the active pen signal and receives the controller signal having the two-way protocol transmitted by the touch controller,
wherein the touch controller detects plural types of the active pens having the one-way protocols and transmits plural types of the controller signals having the two-way protocols to detect plural types of the active pens having the two-way protocols.

5. The touch system according to claim 4 , wherein the active pen transmits the active pen signal having the one-way protocol to the touch controller, and the touch controller determines that the protocol of the active pen is the one-way protocol.

6. The touch system according to claim 4 , wherein after the active pen receives the controller signal having the two-way protocol, the touch controller determines that the protocol of the active pen is the two-way protocol when the active pen transmits the active pen signal having the two-way protocol.

Assignees

• Silicon Integrated Systems Corp

Inventors

• Chen Han-Ning
• Huang Shih-Chan
• Chiang Chien-Yu
• Chuang Kai-Chun
• Chou Chih-Sheng

Classifications

• G06F3/04162 Primary

  for exchanging data with external devices, e.g. smart pens, via the digitiser sensing hardware · CPC title

• G06F2203/04106

  Multi-sensing digitiser, i.e. digitiser using at least two different sensing technologies simultaneously or alternatively, e.g. for detecting pen and finger, for saving power or for improving position detection · CPC title

• G06F3/0442

  using active external devices, e.g. active pens, for transmitting changes in electrical potential to be received by the digitiser · CPC title

• G06F3/0446

  using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes · CPC title

• G06F3/0441

  using active external devices, e.g. active pens, for receiving changes in electrical potential transmitted by the digitiser, e.g. tablet driving signals · CPC title