KR101672639B1

KR101672639B1 - Pen apparatus of providing power for smart device

Info

Publication number: KR101672639B1
Application number: KR1020150089140A
Authority: KR
Inventors: 김동인; 김진영; 정국현; 차경현
Original assignee: 성균관대학교산학협력단
Priority date: 2015-06-23
Filing date: 2015-06-23
Publication date: 2016-11-03

Abstract

A pen for supplying power to a smart device includes: a radio frequency (RF) energy generation unit which receives an RF signal and generates a DC current; a battery unit charged by using the DC current or charged by being connected to a power source via a cable; an interface unit transmitting power to a smart device from the battery unit; and an input unit including a pen-shaped housing and having an end part where a touch input is possible.

Description

PEN APPARATUS OF PROVIDING POWER FOR SMART DEVICE

The technique described below relates to a device for charging a smart device.

Recently, a variety of portable smart devices such as smart phones and tablet PCs are increasing rapidly. When a variety of data services are provided in addition to voice calls, the usage of smart devices is increasing, and users are required to charge their batteries frequently.

Korean Patent Publication No. 10-2008-0017460

The technique described below is intended to provide a pen device that uses RF energy harvesting to charge the battery and provide the charged power to the smart device.

The smart device charging pen includes an RF energy generating unit that receives an RF signal to generate a direct current, a battery unit that is charged by using the direct current or connected to the power source by wire, And an input unit having a pen-shaped housing and capable of touch input at an end thereof.

The technology described below supplies power to the smart device using a stylus pen used as an input tool for the touch panel without using a separate device.

1 is an example showing a configuration for a smart device power supply pen.
2 is an example of a block diagram showing a configuration of an RF energy generating unit.
3 is an example of a smart device that is charged using a power supply pen.
4 is an example of a smart device for controlling the operation of the power supply pen.

The following description is intended to illustrate and describe specific embodiments in the drawings, since various changes may be made and the embodiments may have various embodiments. However, it should be understood that the following description does not limit the specific embodiments, but includes all changes, equivalents, and alternatives falling within the spirit and scope of the following description.

The terms first, second, A, B, etc., may be used to describe various components, but the components are not limited by the terms, but may be used to distinguish one component from another . For example, without departing from the scope of the following description, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

As used herein, the singular " include "should be understood to include a plurality of representations unless the context clearly dictates otherwise, and the terms" comprises & , Parts or combinations thereof, and does not preclude the presence or addition of one or more other features, integers, steps, components, components, or combinations thereof.

Before describing the drawings in detail, it is to be clarified that the division of constituent parts in this specification is merely a division by main functions of each constituent part. That is, two or more constituent parts to be described below may be combined into one constituent part, or one constituent part may be divided into two or more functions according to functions that are more subdivided. In addition, each of the constituent units described below may additionally perform some or all of the functions of other constituent units in addition to the main functions of the constituent units themselves, and that some of the main functions, And may be carried out in a dedicated manner.

Also, in performing a method or an operation method, each of the processes constituting the method may take place differently from the stated order unless clearly specified in the context. That is, each process may occur in the same order as described, may be performed substantially concurrently, or may be performed in the opposite order.

The smart device power supply pen 100 described below is a device used as an input tool for various smart devices. A smart device is a device including an input device such as a touch panel. For example, smart devices include devices such as smart phones, tablet PCs, notebooks, and the like.

The smart device power supply pen 100 may be used as an input tool or as an auxiliary power supply device for charging the battery of the smart device. Therefore, a smart device basically means a portable device that is not connected to a fixed power source. For example, when the user is using the smartphone and the battery is almost exhausted, the pen 100 for supplying the smart device is connected to the smart phone to supply power to the smart phone or to charge the battery of the smart phone. In this case, the smart device power supply pen 100 corresponds to the auxiliary battery.

Hereinafter, the smart device power supply pen 100 will be described in detail with reference to the drawings. Fig. 1 is an example showing a configuration for the smart device power supply pen 100. Fig.

Fig. 1 (a) is an example showing an appearance of the smart device power supply pen 100. Fig. Basically, the smart device power supply pen 100 includes an input unit 110 for touch input on a touch panel. The input unit 110 may use various device configurations conventionally used for a stylus pen or the like. 1 (a), a display unit 150 for displaying information related to power supply to the outside of the pen is shown. The display unit 150 may include an LED lamp or a separate display screen. 1 (a) is an example of the display unit 150, in which the first display unit 150A is configured to display information indicating whether the smart device power supply pen 100 is currently performing energy harvesting using the RF signal, Or not. For example, different information may be displayed due to differences in the emission colors of the LED lamps. The second display unit 150B corresponds to an information window for displaying the state of charge of the battery unit 130 or the state of remaining battery power. On the other hand, the button 160 is used when the interface unit 140 is protruded to the outside.

Fig. 1 (b) shows an example of the internal configuration of the smart device power supply pen 100. Fig. The smart device power supply pen 100 includes an RF energy generation unit 120 for receiving a RF signal and generating a DC current, and a battery unit 130 charged by using a direct current or connected to a power source by a wire, .

The battery unit 130 may be charged using a direct current transmitted from the RF energy generating unit 120 or may be charged using a separate external power source, not shown in FIG. For example, the user connects the smart device power supply pen 100 with an external power source (such as an outlet) through a wire to charge the battery unit 130. The RF energy generating unit 120 may charge the battery unit 130 when the power of the battery unit 130 is exhausted or the remaining amount of the battery unit 130 remains below the reference value.

The smart device power supply pen 100 includes an interface unit 140 for transmitting power from the battery unit 130 to the smart device. The interface unit 140 may be a micro-pin type device inserted into a smart device. The interface unit 140 may use micropins of different standards depending on the type of the smart device. 1 (b), the interface unit 140 may protrude to the outside at all times. The interface unit 140 is located in the housing (outer case) of the smart device power supply pen 100 and may protrude outward when the user presses the button 160. A detailed description of the mechanical structure for projecting to the outside will be omitted.

2 is an example of a block diagram showing the configuration of the RF energy generating unit 120. [

The RF energy generating unit 120 is a device configuration based on RF energy harvesting. The energy harvesting technique generally refers to a method of acquiring energy using the surrounding environment. Energy harvesting using radio frequency (hereinafter referred to as RF energy harvesting) refers to a technique of using an RF radio signal as an energy source. A transmitter device that transmits energy transmits a signal with a large output power on a frequency, and receives a specific device and uses it as electric power. Furthermore, it is possible to use an RF signal emitted in a normal communication environment without using a specific RF signal for energy transmission.

The RF signal includes various signals such as a mobile communication signal, a WiFi signal, a broadcasting signal, a short distance communication (Zigbee, etc.) signal, and a signal transmitted from a mobile terminal.

The RF energy generating unit 120 is a device that receives an RF signal to generate power energy. The RF energy generating unit 120 includes an antenna 121 for receiving an RF signal, an impedance matching circuit 122 for eliminating the power loss of the RF signal received by the antenna 121, And a current converter 123 for converting the DC current into a DC current. The DC current generated by the current converter is transmitted to the battery unit 130.

In Fig. 2, the antenna 121, the impedance matching circuit 122, and the current converter 123 are shown as separate components. However, it is called rectenna, including antenna and rectifier circuit.

The RF transmitting and receiving unit and the RF signal transmitting unit of the communication device are formed by combining a plurality of components and the signal transmission characteristics between the components are different, so it is necessary to match the impedance to the RF signal. The impedance matching circuit 122 is an apparatus that performs impedance matching after receiving an RF signal transmitted from a host apparatus. The impedance matching is preferably optimized in consideration of elements (such as diodes) used in actual devices.

The current converter 123 includes a rectifier for converting the RF signal into a DC current. An RF signal having a constant waveform may have positive and negative values. The rectifier converts the direct current signal having one direction into a signal having both positive and negative directions.

Although not shown in FIG. 2, the current converter 123 may include a DC-DC converter for converting a signal output from the current converter 123 into a constant voltage.

3 is an example of a smart device that is charged using a power supply pen. The smart device power supply pen 100 receives an RF signal to generate power and charges the battery. In FIG. 3, RF signals are transmitted from the mobile communication base station 1 and the Wi-Fi AP 2 as an example. The smart device power supply pen 100 is connected to the smart device 10 through the interface unit 140. [ The smart device power supply pen 100 supplies power to the connected smart device 10 to allow the smart device 10 to operate or to charge the battery of the smart device 10. [ Meanwhile, the smart device power supply pen 100 can charge its battery using the RF signal at all times regardless of connection with the smart device 10.

4 is an example of a smart device for controlling the operation of the power supply pen. In FIG. 4, the smart device 10 is connected to the smart device power supply pen 100. The smart device 10 can output certain information to the display screen 11. For example, the display screen 11B may display the current charging status of the smart device. Or the intensity of the RF signal received by the smart device power supply pen 100 can be displayed on the display screen 11B. Accordingly, the user can search for a place where the strength of the RF signal is strong, so that the pen 100 for power supply of the smart device can be charged more quickly.

Further, the smart device 10 may control the operation of the pen 100 for supplying the smart device. The smart device 10 transmits a certain control command to the smart device power supply pen 100. [ For example, the smart device 10 may transmit an instruction to the smart device power supply pen 100 to perform energy harvesting using an RF signal. The smart device 10 may also request the smart device 10 to power the smart device power supply pen 100. The display screen 11 of the smart device may display a screen for controlling the smart device power supply pen 100. [ 4, the display screen 11A includes a menu for turning on / off the energy charging mode (charging of the smart device) and a menu for turning on / off the RF energy harvesting operation of the smart device power supply pen 100 Respectively.

It should be noted that the present embodiment and the drawings attached hereto are only a part of the technical idea included in the above-described technology, and those skilled in the art will readily understand the technical ideas included in the above- It is to be understood that both variations and specific embodiments which can be deduced are included in the scope of the above-mentioned technical scope.

1: base station 2: WiFi AP
10: Smart device 11: Display screen
11A, 11B: Display screen
100: Pen for powering smart device 110: Input unit
120: RF energy generating unit 121: RF antenna
122: impedance matching circuit 123: current converter
130 battery unit 140 interface unit
150: Display part 150A, 150B: Display part
160: Button

Claims

An RF energy generating unit receiving the RF signal to generate a DC current;
A battery unit that is charged using the direct current or connected to a power source at an ordinary power source to be charged;
An interface unit for transmitting power from the battery unit to the smart device; And
And an input unit having a pen-shaped housing and capable of touch input at an end thereof,
Wherein the interface unit includes a micro pin inserted into the smart device, the micro pin protruding from the inside of the housing to the outside by an external force,
The smart device outputs the charging status of the battery unit to the display screen while the smart unit is connected to the interface unit,
Wherein the smart device transmits a command to the interface unit to control a charging operation of the battery unit or a power supply operation using the battery unit using the RF energy generating unit while the smart unit is connected to the interface unit.

The method according to claim 1,
And a display unit for displaying an amount of energy remaining in the battery unit.

The method according to claim 1,
The RF energy generating unit
An RF receiving antenna for receiving the RF signal;
An impedance matching circuit for performing impedance matching on the received RF signal; And
And a current transformer for converting the impedance-matched RF signal into a direct current.

delete