Signature verification between a mobile device and a computing device

• US 9,582,186 B2
• Filed: 11/05/2014
• Issued: 02/28/2017
• Est. Priority Date: 12/20/2013
• Status: Active Grant

• Current Assignee: MediaTek, Inc.
• Original Assignee: MediaTek, Inc.
• Inventors: Chang, Yuan-Hsiu, Kuo, Chung-Jen, Chen, Po-An
• Primary Examiner(s): Dharia, Prabodh M
• Application Number:
  US14/533,287
• Publication Number:
  US 20150177978A1
• Time in Patent Office: 846 Days
• Field of Search: 345156-184, 463/20, 463/29, 705/400, 709/203
• US Class Current: 1/1
• CPC Class Codes: G06F 1/1643 the display being associated to a digitizer, e.g. laptops that can be used as penpads details related to the relative motion of the display enclosure with respect to the body enclosure, e.g. to move between laptop and tablet PC configuration G06F1/1615
• CPC Class Codes: G06F 1/1698 the I/O peripheral being a sending/receiving arrangement to establish a cordless communication link, e.g. radio or infrared link, integrated cellular phone details of antennas disposed inside a computer H01Q1/2266
• CPC Class Codes: G06F 21/35 communicating wirelessly
• CPC Class Codes: G06F 21/82 Protecting input, output or interconnection devices
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G06F 3/04162 for exchanging data with external devices, e.g. smart pens, via the digitiser sensing hardware
• CPC Class Codes: G06F 3/04883 for inputting data by handwriting, e.g. gesture or text
• CPC Class Codes: H04B 5/22 Capacitive coupling
• CPC Class Codes: H04B 5/72 for local intradevice communication
• CPC Class Codes: H04W 12/069 using certificates or pre-shared keys
• CPC Class Codes: H04W 4/80 Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication

Abstract

A non-transitory computer readable storage medium is provided. The non-transitory computer readable storage medium has stored therein instructions, which when executed by a mobile device, cause the mobile device to: provide, at a processing circuit, a signal to a transmitting electrode of a first touch panel; transmit, at the transmitting electrode, the signal to a receiving electrode of a second touch panel of a computing device; and perform further operation with the computing device when the signal corresponds to a signature stored in the computing device.

Claims

1. A non-transitory computer readable storage medium having stored therein instructions, which when executed by a mobile device, cause the mobile device to:

provide, at a processing circuit, a signal to a transmitting electrode of a first touch panel;

transmit, at the transmitting electrode, the signal directly to a receiving electrode of a second touch panel of a computing device responsive to the first touch panel and the second touch panel approaching each other; and

perform further operation with the computing device when the signal corresponds to a handwritten signature stored in the computing device;

wherein the signal is generated according to another handwritten signature stored in a format in a memory, wherein the format comprises one of the following;

a plurality of frames, wherein one of the plurality of frames is representative of a plurality of touch strengths sensed by a plurality of sensing pixels of the first touch panel at a first time instant;

a plurality of first data sets, wherein one of the plurality of first data sets comprises a two-dimensional (2D) coordinate and a second time instant, and the 2D coordinate is representative of a 2D position at which the first touch panel was touched at the second time instant;

a plurality of second data sets, wherein one of the plurality of second data sets comprises a three-dimensional (3D) coordinate and a third time instant, and the 3D coordinate is representative of another 2D position at which the first touch panel was touched at the third time instant and a touch strength sensed at the another 2D position at the third time instant.

2. The non-transitory computer readable storage medium of claim 1, wherein the further operation with the computing device comprises:

transmit data, at a wireless communication device other than the first touch panel, to the computing device.

3. The non-transitory computer readable storage medium of claim 1, wherein the computing device is unlocked when the signal corresponds to the handwritten signature stored in the computing device so as to enable the mobile device to perform the further operation with the computing device.

4. A non-transitory computer readable storage medium having stored therein instructions, which when executed by a computing device, cause the computing device to:

receive, at a receiving electrode of a first touch panel, a signal directly from a transmitting electrode of a second touch panel of a mobile device responsive to the first touch panel and the second touch panel approaching each other;

receive, at a processing circuit, the signal from the receiving electrode of the first touch panel;

generate, at the processing circuit, received data according to the signal;

determine, at a processor, whether the received data corresponds to a handwritten signature stored in a memory; and

generate, at the processor, an authentication signal when determining that the received data corresponds to the handwritten signature stored in the memory;

wherein the signal is generated by the mobile device according to another handwritten signature stored in a format in the mobile device, wherein the format is one of the following;

a plurality of frames, wherein one of the plurality of frames is representative of a plurality of touch strengths sensed by a plurality of sensing pixels of the first touch panel at a first time instant;

a plurality of first data sets, wherein one of the plurality of first data sets comprises a two-dimensional (2D) coordinate and a second time instant, and the 2D coordinate is representative of a 2D position at which the first touch panel was touched at the second time instant;

a plurality of second data sets, wherein one of the plurality of second data sets comprises a three-dimensional (3D) coordinate and a third time instant, and the 3D coordinate is representative of another 2D position at which the first touch panel was touched at the third time instant and a touch strength sensed at the another 2D position at the third time instant.

5. The non-transitory computer readable storage medium of claim 4, wherein the processor determines whether the received data corresponds to the handwritten signature stored in the memory according to one of the following:

stroke speed of the handwritten signature;

stroke strength of the handwritten signature;

stroke order of the handwritten signature;

stroke track of the handwritten signature; and

stroke curvature of the handwritten signature.

6. The non-transitory computer readable storage medium of claim 4, further causing the computing device to:

transmit data, at a wireless communication device other than the first touch panel, to the mobile device after the authentication signal is generated.

7. A mobile device, comprising:

a memory;

a first touch panel with a transmitting electrode, wherein the transmitting electrode is configured to transmit a signal directly to a receiving electrode of a second touch panel of a computing device responsive to the first touch panel and the second touch panel approaching each other; and

a processing circuit, configured to provide the signal to the transmitting electrode in response to contact of a user,

wherein, when the signal corresponds to a handwritten signature stored in the computing device, the mobile device performs further operation with the computing device; and

wherein the signal is generated according to another handwritten signature stored in a format in the memory, wherein the format comprises one of the following;

a plurality of frames, wherein one of the plurality of frames is representative of a plurality of touch strengths sensed by a plurality of sensing pixels of the first touch panel at a first time instant;

a plurality of first data sets, wherein one of the plurality of first data sets comprises a two-dimensional (2D) coordinate and a second time instant, and the 2D coordinate is representative of a 2D position at which the first touch panel was touched at the second time instant; and

a plurality of second data sets, wherein one of the plurality of second data sets comprises a three-dimensional (3D) coordinate and a third time instant, and the 3D coordinate is representative of another 2D position at which the first touch panel was touched at the third time instant and a touch strength sensed at the another 2D position at the third time instant.

8. The mobile device of claim 7, further comprising:

a wireless communication device other than the first touch panel, and the further operation comprises transmitting data from the wireless communication module to the computing device.

9. The mobile device of claim 7, wherein the computing device is unlocked when the signal corresponds to the handwritten signature stored in the computing device so as to enable the mobile device to perform the further operation with the computing device.

10. A computing device, comprising:

a memory;

a first touch panel with a receiving electrode, wherein the receiving electrode is configured to receive a signal directly from a transmitting electrode of a second touch panel of a mobile device responsive to the first touch panel and the second touch panel approaching each other;

a processing circuit, configured to receive the signal from the receiving electrode and generate received data according to the signal; and

a processor, determining whether the received data corresponds to a handwritten signature stored in the memory, and generating an authentication signal when determining that the received data corresponds to the handwritten signature;

wherein the signal is generated according to another handwritten signature stored in a format in the mobile device, wherein the format comprises one of the following;

a plurality of frames, wherein one of the plurality of frames is representative of a plurality of touch strengths sensed by a plurality of sensing pixels of the first touch panel at a first time instant;

a plurality of first data sets, wherein one of the plurality of first data sets comprises a two-dimensional (2D) coordinate and a second time instant, and the 2D coordinate is representative of a 2D position at which the first touch panel was touched at the second time instant; and

a plurality of second data sets, wherein one of the plurality of second data sets comprises a three-dimensional (3D) coordinate and a third time instant, and the 3D coordinate is representative of another 2D position at which the first touch panel was touched at the third time instant and a touch strength sensed at the another 2D position at the third time instant.

11. The computing device of claim 10, wherein the processor determines whether the received data corresponds to the handwritten signature stored in the memory according to one of the following:

stroke speed of the handwritten signature;

stroke strength of the handwritten signature;

stroke order of the handwritten signature;

stroke track of the handwritten signature; and

stroke curvature of the handwritten signature.

12. The computing device of claim 10, further comprising:

a wireless communication device other than the first touch panel, configured to transmit data to the mobile device after the authentication signal is generated.