Recognition method for input device, recognition device, electronic device and input device

• US 9,645,683 B2
• Filed: 09/10/2013
• Issued: 05/09/2017
• Est. Priority Date: 09/17/2012
• Status: Active Grant

• Current Assignee: Lenovo (Beijing) Limited (Lenovo Group Ltd.), Lenovo Company Limited (Lenovo Group Ltd.)
• Original Assignee: Lenovo (Beijing) Limited (Lenovo Group Ltd.), Lenovo Company Limited (Lenovo Group Ltd.)
• Inventors: Yang, Guang
• Primary Examiner(s): SOTO LOPEZ, JOSE R
• Application Number:
  US14/022,602
• Publication Number:
  US 20140078103A1
• Time in Patent Office: 1,337 Days
• Field of Search: 345156, 345173, 345174, 345175, 345179
• 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 3/038 Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry
• CPC Class Codes: G06F 3/044 by capacitive means

Abstract

A recognition method for an input device is disclosed in the present invention, which is applied to an electronic device with a capacitive touch screen having a function of height detection, different input devices have different electric field height information. The method includes: obtaining the electric field height information of the input device, upon detection of a touch control operation of the input device; and determining attribute information of the input device according to a preset correspondence between the electric field height information and the attribute information of the input device. In the recognition method for the input device disclosed in the present disclosure, after it is determined that a touch control operation is performed on the capacitive touch screen by the input device, the electric field height information of the input device is obtained.

Claims

1. A recognition method for an input device including a plurality of electrical conductors located at different heights, applied to an electronic device with a capacitive touch screen which has a function of height detection, different input devices having different electric field height information, wherein the method comprises:

obtaining a sequence of capacitance values by connecting/disconnecting the plurality of electrical conductors in the input device to/from a ground in a preset order, upon detection of a touch control operation of the input device;

obtaining electric field height values as the electric field height information of the input device, wherein the electric field height values correspond to multiple capacitance values in the sequence of capacitance values according to a preset correspondence between the capacitance values and the electric field height values; and

determining attribute information of the input device according to a preset correspondence between the electric field height information and the attribute information of the input device.

2. The method according to claim 1, wherein the attribute information of the input device comprises physical attribute information and/or role attribute information.

3. The method according to claim 1, wherein the attribute information of the input device comprises physical attribute information and/or role attribute information.

4. An input device, adapted to the recognition method for the input device according to claim 1, wherein the input device comprises:

a main body;

a plurality of electrical conductors fixedly located at different heights of the main body; and

a control circuit adapted to connect/disconnect the plurality of electrical conductors to/from the ground respectively.

5. The input device according to claim 4, wherein the control circuit comprises a controller and a plurality of switching tubes;

and one switching tube is connected in series between one end of each electrical conductor and the ground, control terminals of the plurality of switching tubes are connected to different I/O ports of the controller respectively.

6. A recognition device, applied to an electronic device with a capacitive touch screen which has a function of height detection, wherein the recognition device comprises:

an information obtaining unit, adapted to obtain electric field height information of an input device comprising a plurality of electrical conductors located at different heights upon detection of a touch control operation of the input device; and

an information determining unit, adapted to determine attribute information of the input device according to a preset correspondence between the electric field height information and the attribute information of the input device,

wherein the information obtaining unit comprises;

a second obtaining module adapted to obtain a sequence of capacitance values by connecting/disconnecting the plurality of electrical conductors in the input device to/from a ground in a preset order; and

a second determining module adapted to obtain electric field height values corresponding to multiple capacitance values in the sequence of capacitance values according to a preset correspondence between the capacitance values and the electric field height values and set the obtained electric field height values as the electric field height information of the input device.

7. An electronic device including a capacitive touch screen that has a function of height detection, wherein the electronic device further comprises a recognition device connected to the capacitive touch screen, with the recognition device being the recognition device according to claim 6.

8. An electronic device comprising a capacitive touch screen that has a function of height detection, wherein the electronic device further comprises a recognition device connected to the capacitive touch screen, with the recognition device being the recognition device according to claim 6.