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FINGERPRINT DATA TRANSFER IN TOUCH DEVICE

IP.com Disclosure Number: IPCOM000250156D
Publication Date: 2017-Jun-07
Document File: 5 page(s) / 110K

Publishing Venue

The IP.com Prior Art Database

Related People

Jechan Kim: INVENTOR [+2]

Abstract

Touch and fingerprint sensors have become essential functions in mobile devices, such as laptops, smartphones, and tablets. The more the number of devices a host processor can support grows, the more interface pins are required. This makes a host processor bigger and costly. With this invention, a touch device works as a bridge device that connects a fingerprint sensor device to a host processor, combines both fingerprint data and touch data, and sends them to a host processor thru existing interfaces, such as I2C, SPI or USB, without requiring additional interface pins.

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Fingerprint data transfer in touch device Jechan Kim

Copyright © 2017 Synaptics Incorporated, All Rights Reserved. Page: 1 of 5

Information contained in this publication is provided as-is, with no express or implied warranties, including any warranty of merchantability, fitness for any particular purpose, or non-infringement. Synaptics Incorporated assumes no liability whatsoever for any use of the information contained herein, including any liability for intellectual property infringement. This publication conveys no express or implied licenses to any intellectual property rights belonging to Synaptics or any other party. Synaptics may, from time to time and at its sole option, update the information contained herein without notice.

FINGERPRINT DATA TRANSFER IN TOUCH DEVICE

1. Inventor(s): Jechan Kim Prashant Shamarao

2. Synaptics Incorporated, San Jose, CA, USA

3. Short Summary

Figure 1-1. Fingerprint data transfer to a host thru touch device

Touch and fingerprint sensors have become essential functions in mobile devices, such as laptops, smartphones, and tablets. The more the number of devices a host processor can support grows, the more interface pins are required. This makes a host processor bigger and costly.

With this invention, a touch device works as a bridge device that connects a fingerprint sensor device to a host processor, combines both fingerprint data and touch data, and sends them to a host processor thru existing interfaces, such as I2C, SPI or USB, without requiring additional interface pins.

4. Technological advantages In existing mobile systems, touch and fingerprint sensors have a separate interface pins to a host processor for data communication. With this invention a host processor only needs single communication port to support both sensors. This invention can simplify host interface and provide additional cost savings in system board design.

5. General Description As shown in Figure 6-1, existing mobile systems have a separate port per device for data communication. Depending on data throughput requirement, I2C, SPI, or USB can be used as a communication port. The number of pins required per interface is listed in Table 6-1.

Fingerprint data transfer in touch device Jechan Kim

Copyright © 2017 Synaptics Incorporated, All Rights Reserved. Page: 2 of 5

Information contained in this publication is provided as-is, with no express or implied warranties, including any warranty of merchantability, fitness for any particular purpose, or non-infringement. Synaptics Incorporated assumes no liability whatsoever for any use of the information contained herein, including any liability for intellectual property infringement. This publication conveys no express or implied licenses to any intellectual property rights belonging to Synaptics or any other party. Synaptics may, from time to time and at its sole option, update the information contained herein without notice.

Table 6-1. The number of pins comparison for communication port...