US 11,307,703 B2 · Method for transmitting and receiving signal, processor chip, active stylus and touch screen

Abstract

Some embodiments of the present disclosure provide a method for transmitting and receiving a signal, a processor chip, an active stylus, and a touch screen. The method for transmitting a signal includes: acquiring, based on detected pressure information, codes representing pressure information and used to detect tip positions, where the code includes n code bits, n being an integer greater than 1; generating n coded signals respectively corresponding to the n code bits; and transmitting each coded signal in the coded signals at the preset first or second frequency or prohibiting transmission of each coded signal in the coded signals, where the first frequency, the second frequency and prohibited transmission of the n coded signals relate to the pressure information.

Claims19

Dependent claims

A method for transmitting a signal, applied to active styli, comprising:

acquiring, based on detected pressure information, codes representing pressure information and used to detect tip positions, where the codes comprise n code bits, n being an integer greater than 1;
wherein the n code bits further comprise a check code bit;
generating n coded signals respectively corresponding to the n code bits;
and
transmitting each coded signal representing pressure information in the coded signals at a preset first frequency or second frequency or prohibiting transmission of each coded signal representing pressure information in the coded signals;
wherein the first frequency, the second frequency and prohibited transmission of the n coded signals relate to the pressure information.

3 more elements

A method for receiving a signal, applied to touch screens, comprising:

detecting, in sequence, n coded signals transmitted by the active stylus in sequence where the n coded signals have a preset first frequency or second frequency or are prohibited to be transmitted;
wherein the n coded signals respectively correspond to n code nodes, and the n code bits further comprise a check code bit;
acquiring pressure information based on frequency and prohibited transmission of signals representing pressure information in n detected coded signals;
and
acquiring coordinates of tip positions based on amplitude information of signals used to detect tip positions in n detected coded signals.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

17/123,776Filed 16 Dec 2020 · continuation

Priority

30 Sep 2019

Published

US 2021/0103374 A18 Apr 2021

Granted

19 Apr 2022

Term ends

Not estimatedThe source records don’t support an estimate.

Classification8 codes

G06F 3/04162
Control or interface arrangements specially adapted for digitisers: for exchanging data with external devices, e.g. smart pens, via the digitiser…
G06F 3/03545
With detection of two-dimensional [2D] relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D…
G06F 3/038
Pointing devices displaced or positioned by the user , e.g. mice, trackballs, pens or joysticks; Accessories therefor: control and interface…
G06F 3/0383
Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry: signal control means within the pointing device

Method for transmitting and receiving signal, processor chip, active stylus and touch screen

Life of this patent

Method for transmitting and receiving signal, processor chip, active stylus and touch screen

Life of this patent

Abstract

Claims19