CN104702265B

CN104702265B - Multifunctional interface in wearable device

Info

Publication number: CN104702265B
Application number: CN201310655031.6A
Authority: CN
Inventors: 于海东
Original assignee: Shanghai Nutshell Electronics Co ltd
Current assignee: SHANGHAI GEAK ELECTRONICS Co.,Ltd.
Priority date: 2013-12-05
Filing date: 2013-12-05
Publication date: 2021-02-05
Anticipated expiration: 2033-12-05
Also published as: CN104702265A

Abstract

The invention relates to a multifunctional interface on wearable equipment.A pull-up resistor is arranged at the end of a data signal line to a power supply end, and after the data signal transmitted by an external component is subjected to analog-to-digital conversion through an analog-to-digital converter, the interface mode is judged, wherein the high level is a USB interface mode, and the low level is an earphone interface mode. The multifunctional interface can be used on various wearable devices, particularly in smart watches. The intelligent watch has the technical effect that the USB data and the audio data share the interface end, the USB interface, the charging interface and the earphone interface are integrated, the space of the intelligent watch is saved, the attractiveness is improved, and convenience in use can be realized.

Description

Multifunctional interface in wearable device

Technical Field

The present invention relates to a multifunctional interface, and more particularly, to a multifunctional interface in a wearable device.

Background

With the continuous development of electronic technology, more and more intelligent devices appear in the life of people, and the method brings rapidness and convenience to the life of people. In recent years, electronic devices have been integrated with essential items in human life, such as: wearable equipment, portable equipment, implanted equipment etc. have all become the key of each big enterprise research and development, and people are also rising to intelligence wearing equipment's enthusiasm day by day. In the intelligent wearable device, the smart watch is particularly expected to become the most popular personal intelligent terminal device of the next generation after the smart phone.

In the prior art, in order to save the space of the intelligent terminal, the USB interface and the charging interface are unified, information transmission of the USB port can be realized through one interface, and the technology is widely applied to various intelligent mobile phones for charging the intelligent terminal. For wearable devices, such as smart watches, which are products used by users close to the skin, the wearable devices generally have the characteristics of small size and portability, and therefore, interfaces of the wearable devices are set as the key points of researchers. Compared with a smart phone, the smart watch has larger difference in volume, so that the working fineness and the integration of the smart watch are far higher than those of the smart phone, the design of an interface is necessarily influenced, and the excessive expansion interfaces are not attractive and are not convenient for a terminal user to use.

Disclosure of Invention

In order to solve the problems of the existing intelligent watch, the invention provides a multifunctional interface which integrates a USB interface, a charging interface and an earphone interface, saves the space of the intelligent watch, improves the attractiveness and can be used conveniently.

The multifunctional interface provided by the invention is characterized in that a pull-up resistor is arranged at the end of a data signal wire to a power supply end, and an interface mode is judged after the data signal wire transmits an external component is subjected to analog-to-digital conversion through an analog-to-digital converter, wherein the high level is a USB interface mode, and the low level is an earphone interface mode. Therefore, the USB data and audio data sharing interface end is realized.

The multifunctional interface can be used on various wearable devices, particularly in smart watches.

Drawings

FIG. 1 is a schematic diagram of a multi-function interface circuit;

FIG. 2 is a multi-function interface circuit diagram.

Detailed Description

As shown in fig. 1, the multi-function interface 1 includes an access terminal 2 and a processing chip 3.

The access end 2 is used for realizing the insertion of USB equipment and earphone equipment, wherein the access end 2 adopts a standard four-section interface, in particular a four-section 3.5mm earphone port, thereby realizing the compatibility of common three-section 3.5mm stereo earphones.

The signal accessed or output from the access terminal 2 is connected with the processing chip 3 through the data signal line 4, and after the signal is processed by the processing chip 3, the signal is judged to be a USB signal or an earphone signal, and then the signal is respectively transmitted to the USB controller 5 and the audio compiler 6.

A pull-up resistor 8 is provided at the USB _ D + terminal 7 to the power supply 9, which is 10k ohms. The processing chip 3 is provided with an analog-to-digital converter which receives the data signal transmitted by the data signal line D + terminal 7 and judges the level of the USB _ D + terminal 7, wherein the high level is in a USB mode, and the low level is in an earphone mode.

As can be seen from the specific circuit diagram of fig. 2, the multifunctional interface performs level determination through VBUS, and if the level is high, there is an input signal, that is, the USB component or the earphone is inserted into the access end, and a data signal needs to be transmitted; if the level is low, no USB component or earphone is inserted. Then, the level of the D + is judged to be high or low, when the D + is high, the USB _ SEL is judged, namely the input data signal is determined to be a USB signal, and the multifunctional interface is set to be in a USB mode. When D + is low, the input data signal is determined to be an earphone signal if the input data signal is determined to be MIC _ EN, and the multifunctional interface is in an earphone mode.

Claims

1. The utility model provides a multifunctional interface, includes access end and processing chip, its characterized in that: the method comprises the steps that a pull-up resistor is arranged at a data signal line end, the USB mode and the earphone mode are distinguished through a processing chip, and the processing chip is provided with an analog-to-digital converter and is used for carrying out analog-to-digital conversion processing on a data signal acquired by an access end and judging an interface mode of the data signal line end;

the multifunctional interface judges high and low levels through VBUS, and if the multifunctional interface judges the high and low levels are low levels, the multifunctional interface determines that a USB component or an earphone is not inserted into the access end; and if the level is high level, determining that the USB component or the earphone is inserted into the access end, judging the interface mode of the access end according to the level of the data signal line end, wherein the USB interface mode is adopted when the data signal line end is high level, and the earphone interface mode is adopted when the data signal line end is low level.

2. The multi-function interface of claim 1, wherein: the wearable device is used.

3. The multi-function interface of claim 2, wherein: this wearable equipment is intelligent wrist-watch.