KR20140073822A - Portable device operable in Host/Slave mode - Google Patents

Portable device operable in Host/Slave mode Download PDF

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Publication number
KR20140073822A
KR20140073822A KR1020120141738A KR20120141738A KR20140073822A KR 20140073822 A KR20140073822 A KR 20140073822A KR 1020120141738 A KR1020120141738 A KR 1020120141738A KR 20120141738 A KR20120141738 A KR 20120141738A KR 20140073822 A KR20140073822 A KR 20140073822A
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KR
South Korea
Prior art keywords
power
unit
external device
host
slave mode
Prior art date
Application number
KR1020120141738A
Other languages
Korean (ko)
Inventor
송교학
Original Assignee
한국단자공업 주식회사
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Publication date
Application filed by 한국단자공업 주식회사 filed Critical 한국단자공업 주식회사
Priority to KR1020120141738A priority Critical patent/KR20140073822A/en
Publication of KR20140073822A publication Critical patent/KR20140073822A/en

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/263—Arrangements for using multiple switchable power supplies, e.g. battery and AC
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/266—Arrangements to supply power to external peripherals either directly from the computer or under computer control, e.g. supply of power through the communication port, computer controlled power-strips

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Computer Hardware Design (AREA)
  • Telephone Function (AREA)

Abstract

The present invention relates to a mobile terminal operable in a host/slave mode and, more specifically, to a mobile terminal operable in a host/slave mode, which checks the existence of power sensed by a power sensing unit of the mobile terminal to support the host or slave mode of the mobile terminal. The mobile terminal of the present invention includes: a connector unit which includes a plurality of pins and to which an external device is connected; a power sensing unit which senses power with the connected external device; a battery unit which supplies power to the external device or receives power therefrom; and a control unit which checks the existence of power sensed by the power sensing unit to determine the host mode or the slave mode, when the host mode is determined, controls the battery unit to supply power to the external device, and when the slave mode is determined, controls the battery unit to receive power from the external device. Thus, portability can be improved by supporting the two modes of the mobile terminal using one cable, and costs can be reduced by eliminating the need to separately purchase respective cables.

Description

A portable terminal capable of operating in a host / slave mode (Portable device operable in Host / Slave mode)

The present invention relates to a portable terminal capable of operating in a host / slave mode. More particularly, the present invention relates to a portable terminal capable of operating in a host / slave mode, To a host / slave mode in which power is supplied to an external device or power is supplied from an external device.

The USB (Universal Serial Bus) is one of the terminals for data and power input / output, and is a new interface that attracts attention to simplify computer cable with high-speed IEEE1394. A type of serial port that can connect up to 128 peripherals (including hubs) to a single port with plug-and-play interfaces between peripherals such as audio players, joysticks, keyboards, mice, phones, . Generally, the number of pins constituting the USB cable is four, and it is composed of differential data lines D + and D, a power source Vcc, and a ground GND. USB is recognized when connected to the PC while it is in use, and the power is supplied by the cable itself, so no separate peripheral power supply is required.

Micro-5-pin USB has the same function as regular USB 4 pin, but there is one more pin. The one pin may be either Nc (No connected) or ground (GND) depending on the use purpose, for example, a cable for charging or data communication of an Android-based smart phone.

USB OTG (Universal Serial Bus On-The-Go) is an interface to extend USB-related devices to peer-to-peer (P2P) concept to interface with next-generation embedded devices. Previously, USB was a concept of a host-peripheral device to which a peripheral was connected to a PC, while a mobile device and a portable terminal were also intended to have a host function. One side is female (USB) (4 pin) type and the other side is Micro-5 pin.

In the prior art, a Micro-5 pin cable was used to charge a mobile terminal or to transmit data, and on the other hand, an OTG cable was used to connect a peripheral to a mobile terminal. This requires separate cables for each case, so that a separate cost is incurred, which is cumbersome.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and it is an object of the present invention to provide a portable terminal which is capable of operating a host terminal in a host or slave mode, And a mobile terminal capable of operating in a host / slave mode.

Another object of the present invention is to provide a portable terminal capable of operating in a host / slave mode in which efficiency of a USB cable can be improved by supporting two modes of the portable terminal with one cable.

According to an aspect of the present invention, there is provided a portable terminal capable of operating in a host / slave mode,

A connector portion in which a plurality of pins are formed and to which an external device is connected; A power sensing unit for sensing power from the external device; A battery unit for supplying power to the external device or receiving the supplied power; And a control unit for controlling the battery unit to supply power to the external device when the host mode is the host mode, and for controlling the battery unit to be powered from the external device when the slave mode is selected, And a control unit for controlling the battery unit to receive the battery.

In the present invention, the number of pins of the connector is five, and power is supplied through one of them.

In the present invention, the battery unit further includes a power unit for supplying power to the external device in a host mode of the portable terminal, and a charging unit for receiving power from the external device in a slave mode of the portable terminal.

The portable terminal further includes a first switch unit for supplying and disconnecting power from the power source unit to the external device and a second switch unit for supplying and disconnecting power from the external device to the charging unit, Closes the first switch in the mode, and closes the second switch in the slave mode.

In the mobile terminal capable of operating in the host / slave mode according to the present invention, the following effects can be obtained.

First, by supporting two modes of the portable terminal with one cable, portability can be enhanced.

In addition, since the portable terminal does not need to include a cable for connecting a charger or an external device, the cost is reduced.

1 is an overall system configuration diagram of a portable terminal capable of operating in a host / slave mode according to the present invention;
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a portable terminal capable of operating in a host / slave mode.
3 is a block diagram of a battery unit of a portable terminal capable of operating in a host / slave mode according to another embodiment of the present invention.
4 is a view showing an embodiment of a connector pin arrangement of a portable terminal capable of operating in a host / slave mode according to the present invention.
5 is a flowchart illustrating an operation of a portable terminal capable of operating in a host / slave mode according to an embodiment of the present invention.
6 is a flowchart illustrating an operation of a mobile terminal capable of operating in a host / slave mode according to another embodiment of the present invention.

Hereinafter, preferred embodiments of a mobile terminal capable of operating in a host / slave mode according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram of a portable terminal capable of operating in a host / slave mode according to the present invention.

1, a mobile terminal 100 capable of operating in a host / slave mode includes a connector unit 110, a power sensing unit 120, a controller 130, and a battery unit 140.

The connector unit 110 is used when connecting the portable terminal 100 and the external device 200. The connector unit 110 is composed of a USB standard type interface. In the embodiment of the present invention, Mirco-5 pin is used. The external device 200 is a device that supplies power to the portable terminal 100 or receives power from the portable terminal 100 and is a peripheral device such as a charger, a PC or a mouse, a keyboard, a camera, a scanner, Can be used.

The power sensing unit 120 senses the power from the external device 200 to the portable terminal 100 through the connector unit 100, and a voltage and current sensor (not shown) may be used for this purpose.

The control unit 130 determines the host / slave mode of the portable terminal 100 according to the presence or absence of the sensed power through the power sensing unit 120. More specifically, when the power source is sensed from the external device 200 through the power sensing unit 120, the controller 130 determines the slave mode of the portable terminal 100. If the power source is not sensed The host mode is determined. The control unit 130 controls the mobile terminal 100 to supply power to the external device 200 when the mobile terminal 100 is in the host mode and when the mobile terminal 100 is in the slave mode, And controls to receive power from the external device (200).

The battery unit 140 is a device for supplying power to the mobile terminal 100. Generally, a product composed of a lithium ion component is used. The size and shape of the cells constituting the battery unit 140 may vary depending on design conditions.

FIG. 2 shows an embodiment of a battery unit of a portable terminal capable of operating in a host / slave mode according to the present invention.

2, the battery unit 140 further includes a power supply unit 141 and a charging unit 142. [ The power unit 141 supplies power to the external device 200 when the portable terminal 100 determines that the portable terminal 100 is in the host mode. On the other hand, when the portable terminal 100 determines that the portable terminal 100 is in the slave mode by the control unit 130, the charging unit 142 receives power from the external device 200. [

FIG. 3 shows another embodiment of a battery configuration of a portable terminal capable of operating in a host / slave mode according to the present invention.

3, the battery unit 140 further includes a first switch unit 143 and a second switch unit 144. The first switch unit 143 is electrically connected to the power supply unit 141 and the second switch unit 144 is electrically connected to the charging unit 142 in series. The first switch unit 143 is operated to supply power from the power supply unit 141 to the external device 200 when the portable terminal 100 is determined to be in the host mode. At this time, the second switch unit 144 is off. On the other hand, when the portable terminal 100 determines that the portable terminal 100 is in the slave mode, the second switch unit 144 is operated to supply power from the external device 200 to the charging unit 142, . At this time, the first switch unit 143 is off. The portable terminal 100 may be charged by receiving power from the external device 200 by the operation of the first switch unit 143 and the second switch unit 144, And supplies power to the device 200.

FIG. 4 shows an embodiment of a connector pin arrangement of a portable terminal capable of operating in a host / slave mode according to the present invention.

The connector 110 of the mobile terminal 100 is composed of five pins 111 in total, and the pins 111 are arranged as follows. The first pin 111 is connected to a power supply, the second and third pins 111 and 112 are used for data transmission and the fifth pin 111 is used as a ground. In the case of the fourth pin 111, it may be used as an identification (ID) by connecting to the fifth pin 111 or may be shorted and not used. This may vary depending on design conditions, and the present invention is not limited to a specific function.

Hereinafter, an operation state of a mobile terminal capable of operating in a host / slave mode having the above-described configuration will be described with reference to FIG.

First, the control unit 130 of the portable terminal 100 detects whether it is connected to the external device 200 (S10). When the external device 200 is connected to the connector 110 of the portable terminal 100, the power sensing unit 120 senses a power source such as a voltage or a current to be energized with the external device 200 S11). As a result of the sensing by the power sensing unit 120, the controller 130 determines whether or not power is output from the external device 200 to the portable terminal 100 (S12). If power is output from the external device 200 to the portable terminal 100, the controller 130 determines that the portable terminal 100 is in the slave mode (S13) And power is supplied to the battery unit 140 of the terminal 100. On the other hand, if power is not outputted from the external device 200 to the portable terminal 100, the controller 130 determines that the portable terminal 100 is in the host mode (S15) The power is discharged from the battery 140 of the external device 200 to the external device 200 (S16).

FIG. 6 is a flowchart illustrating an operation of a portable terminal capable of operating in a host / slave mode according to another embodiment of the present invention.

As shown in FIG. 6, the controller 130 determines whether the power of the external device 200 sensed by the power sensing unit 120 is output, and determines the mode of the portable terminal (S20). When the portable terminal 100 determines that the slave mode is selected by the control unit 130, the controller 130 operates the first switch unit 143 of the battery unit 140 (S21). At this time, the first switch unit 143 is in the electrically connected state, that is, the ON state, and the second switch unit 144 is in the OFF state. When the current is supplied to the first switch unit 143, the power is charged from the external device 200 to the charging unit 142 inside the battery unit 140. On the other hand, if the portable terminal 100 determines that the portable terminal 100 is in the host mode by the control unit 130, the second switch unit 144 of the battery unit 140 is operated by the control unit 130 (S23). At this time, the second switch unit 144 is turned on and the first switch unit 143 is turned off. When a current is supplied to the second switch unit 144, power is supplied from the power unit 143 in the battery unit 140 to the external device 200.

The scope of the present invention is defined by the appended claims rather than by the foregoing embodiments, and various changes and modifications may be made without departing from the scope of the invention as defined by the appended claims. It is self-evident.

100: portable terminal 200: external device
110: connector portion 111: pin
120: power source sensing unit 130:
140: battery unit 141:
142: charging unit 143: first switch unit
144: second switch section

Claims (4)

A connector portion in which a plurality of pins are formed and to which an external device is connected;
A power sensing unit for sensing power from the external device;
A battery unit for supplying power to the external device or receiving the supplied power;
Wherein the control unit determines the host mode and the slave mode by checking the power source by the power sensing unit and controls the battery unit to supply power to the external device when the host mode is the host mode, And a control unit for controlling the battery unit to receive the battery. The mobile terminal of claim 1, wherein the number of pins of the connector is five, and power is supplied through one of the five terminals. 2. The portable terminal as claimed in claim 1, wherein the battery unit further comprises a power unit for supplying power to the external device in a host mode of the portable terminal and a charging unit for receiving power from the external device in a slave mode of the portable terminal The mobile terminal being capable of operating in a host / slave mode. The portable terminal according to claim 3, further comprising: a first switch unit for supplying and disconnecting power from the power source unit to the external device; and a second switch unit for supplying and disconnecting power from the external device to the charging unit, And closes the first switch in a host mode of the terminal and closes the second switch in a slave mode.


KR1020120141738A 2012-12-07 2012-12-07 Portable device operable in Host/Slave mode KR20140073822A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020120141738A KR20140073822A (en) 2012-12-07 2012-12-07 Portable device operable in Host/Slave mode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020120141738A KR20140073822A (en) 2012-12-07 2012-12-07 Portable device operable in Host/Slave mode

Publications (1)

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KR20140073822A true KR20140073822A (en) 2014-06-17

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KR1020120141738A KR20140073822A (en) 2012-12-07 2012-12-07 Portable device operable in Host/Slave mode

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10317971B2 (en) 2015-10-21 2019-06-11 Samsung Electronics Co., Ltd. Electronic device and method for controlling functions thereof according to attachment of external device
KR20220144381A (en) * 2020-02-20 2022-10-26 하이 섹 랩스 리미티드 Power delivery system for smartphones and add-on devices

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10317971B2 (en) 2015-10-21 2019-06-11 Samsung Electronics Co., Ltd. Electronic device and method for controlling functions thereof according to attachment of external device
KR20220144381A (en) * 2020-02-20 2022-10-26 하이 섹 랩스 리미티드 Power delivery system for smartphones and add-on devices

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