KR101409718B1 - standby-power control module of settop box with cordless charging apparatus, method for the same, and computer-readable recording medium for the same - Google Patents

Abstract

The present invention relates to a technique capable of optimizing standby power in a standby mode of a set-top box with a wireless charging device. More specifically, the present invention relates to a technique capable of optimizing standby power in a set-top box with a wireless charging device through a series of: maintaining standby state by a standby chipset in a standby mode of the set-top box; maintaining a zero power consumption state of a microcomputer of the set-top box and the wireless charging device embedded in the set-top box; and operating the wireless charging device in the standby mode after the microcomputer escapes from the standby mode when the standby chipset wakes up the microcomputer according to a user control.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a standby power control module and method for a set-top box incorporating a wireless charging device, and a computer-readable recording medium therefor. for the same}

TECHNICAL FIELD The present invention relates to a technique for optimizing standby power in a standby mode (standby mode) in a set top box incorporating a wireless charging device.

More particularly, the present invention relates to a method for controlling a standby chip set in a standby mode of a set-top box, a standby mode in which a standby chip set is maintained in a standby state, a wireless charging device incorporated in a set- The present invention relates to a technique capable of optimizing standby power in a set-top box incorporating a wireless charging device through a series of steps of operating the wireless charging device in a standby mode after the microcomputer wakes up from the standby mode.

In general, a set-top box (digital set-top box) is a digital broadcast receiving apparatus that receives digital broadcasts provided through terrestrial waves, cables, and satellites and allows them to be viewed through a display device (monitor, television set). Such a set-top box is configured for each digital broadcasting company and generally comprises a configuration for receiving digital broadcasting transmitted by the broadcasting company.

On the other hand, various types of mobile terminals including smart phones are rapidly spreading, and techniques for charging these mobile terminals have also been proposed. In the past, adapters that could charge mobile terminals by household power were common, but after Apple's iPhone in the United States, charging the mobile terminal by drawing power from the USB port is also widely used.

The mobile terminal employs a proprietary access port for each manufacturer, which makes charging very inconvenient in actual use environments. As an example of a general household, there are various types of mobile terminals according to their preferences according to their members, so it is inconvenient to provide an adapter or a charging cable for each terminal manufacturer in the house, and to adjust them at that time. The adapters can be provided in one and the gender for port conversion can be used, but the inconvenience is still present in this case.

Recently, a wireless charging technique has been proposed in order to solve the above problems and basically to solve the inconvenience of cable connection. There are three proposals to transmit power wirelessly using electromagnetic induction, electromagnetic resonance, and electromagnetic waves. Electromagnetic induction and electromagnetic resonance are considered to be a major factor in the charging of mobile terminals. The electromagnetic induction method is suitable for this purpose because it transmits power at distances of several mm to several cm with 125 kHz and 135 kHz signals, and the electromagnetic resonance method transmits electric power at distances of several meters or less with a 10 MHz signal.

However, such a wireless charging device must implement a standby mode so that the wireless charging operation can be started immediately when an external electronic device approaches, and consumes approximately 0.4 to 0.5 W of standby power in this case. On the other hand, the set-top box also needs to implement a standby mode so that it can operate in response to a user's power-on button operation or remote control operation. In this case, standby power consumption of about 0.4 to 0.5 W is consumed. Therefore, when the wireless charging device is incorporated in the set-top box, standby power consumption of about 0.8 to 1.0 W is consumed as a whole, which is considerably large as a set-top box.

Given the increasing worldwide regulation of standby power consumption and the fact that products with low standby power are better perceived in terms of electricity consumption and fire risk, A technique for lowering the standby power consumption of the set-top box is desired.

[Related Technical Literature]

1. Non-Contact Power Charging Device (Patent Application No. 10-2009-0049199)

2. Non-contact charging module and receiving-side and non-contact charging device using the same (Patent application 10-2012-0007328)

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide a wireless charging device in which a standby chip set maintains a standby state in a standby mode of a set- When the standby chip set wakes up the microcomputer according to a user operation, the microcomputer escapes from the standby mode, and then operates the wireless charging device in the standby mode. In the set-top box having the wireless charging device, To provide a technique that can optimize the performance of the system.

In order to achieve the above object, a standby power control module of a set-top box incorporating a wireless charging device according to the present invention maintains a system standby state by operation power of a set-top box, generates a wake- A standby chip set 100; A microcomputer 200 for periodically transmitting an alternate standby control signal while monitoring a detection feedback signal for the wireless charging device, when the wireless microcomputer is activated by a wake-up signal of the standby chipset to control the wireless charging device in a standby mode; A charge control chipset 300 for detecting an external electronic device in proximity to the wireless charging device in a standby mode of the wireless charging device and outputting detection feedback; The power supply to the wireless charging device is switched on and off by the standby control signal of the microcomputer, the switching power supply is switched off in the system standby state to maintain the consumed electric power of the wireless charging device in the zero state, The power supply of the wireless charging device is interrupted and then the power is switched off by the standby control signal of the microcomputer in accordance with the detection feedback signal to stably supply the operating power to the wireless charging device to supply power to the external electronic device And a switching circuit (400) for performing a switching operation.

In the present invention, the switching circuit 400 includes: a first input terminal 410 receiving a main operation power from a main power supply of the set top box; The main operation power is applied to the power supply coil part and the charge control chipset provided in the wireless charging device, and in the switching off state, the main operation power is shut off, An FET switch 420 to keep it in a zero state; And a first output terminal 430 for outputting and supplying the main operation power supply to the feed coil part and the charge control chipset in the ON state of the FET switch. At this time, the switching circuit 400 may further include a regulator 440 for lowering the power output provided from the first output terminal to the operation voltage of the charge control chipset.

In order to achieve the above object, the present invention provides a standby power control method for a set-top box having a built-in wireless charging device, wherein when the set-top box is powered on, the set-top box maintains the system standby state by the standby chipset, Maintaining the power consumption of the wireless charging device at a zero state by turning off the operational power provided to the wireless charging device by the circuit being set to switching off; Generating a wake-up signal by the standby chipset according to a user operation; The microcomputer of the set-top box is activated by a wake-up signal; Controlling the wireless charging device in a standby mode by periodically transmitting an alternate standby control signal while monitoring a detection feedback signal for the wireless charging device; The charging control chipset of the wireless charging device senses an external electronic device close to the wireless charging device when the switching circuit temporarily supplies the operating power of the wireless charging device by the alternate standby control signal; Generating a detection feedback signal by the charge control chipset when a nearby external electronic device is sensed; And setting the switching circuit on by the microcomputer by detection feedback to stably provide operation power to the wireless charging device.

Meanwhile, a computer-readable recording medium according to the present invention records a program for performing a standby power control method of a set-top box incorporating such a wireless charging device.

The standby power control technology of a set-top box incorporating a wireless charging device according to the present invention,

(1) Even when power is supplied to the set-top box, only the standby chipset mounted on the set-top box maintains the standby mode, and the wireless charging device built in the set-top box and the microcomputer operating the set- And the standby chip set transmits the wakeup signal to the outside, the microcomputer and the wireless charging device are operated after the standby mode is switched.

(2) Since the stand-alone power IC of the wireless charging device itself is not required, the manufacturing cost of the set-top box in which the wireless charging device is built can be reduced.

(3) Even when power is supplied to the set-top box, the stand-by power of the microcomputer and the wireless charging device can be maintained at zero before the external electronic device approaches the set-top box. Standby power of the set-top box including the wireless charging device can be realized to be 0.5W or less, which is the standard of Europe and North America.

1 is a perspective view illustrating a wireless charging device equipped with a standby power cutoff module according to the present invention and a set-top box incorporating the same.
FIG. 2 is a cross-sectional view illustrating a wireless charging device and a set-top box incorporating the same according to the present invention.
3 is a block diagram illustrating an internal configuration of a wireless charging device in which the standby power cut-off module according to the present invention operates and a set-top box having the same.
FIG. 4 is a circuit diagram of a wireless charging device in which the standby power cutoff module according to the present invention operates; FIG.
Fig. 5 is an exemplary diagram showing a circuit diagram of a charging device including a standby power IC; Fig.
FIG. 6 is a flowchart illustrating a standby power control process of the wireless charging device according to the present invention. FIG.

First, a set-top box 10 for implementing the present invention and a wireless charging device 20 incorporated in the set-top box 10 will be briefly described.

1 is a diagram illustrating an example of a wireless charging device 20 equipped with a standby power cutoff module according to the present invention and a set top box 10 incorporating the wireless charging device 20. FIG. Top box 10 incorporating the wireless charging device 20 in which the module is mounted. 3 is a block diagram showing the internal configuration of a wireless charging device 20 in which the standby power cut-off module according to the present invention operates and a set-top box 10 incorporating the wireless charging device.

3, a set top box 10 for implementing the present invention includes a main power supply unit 11, a housing 13, a standby chipset 100, a microcomputer 200, and a wireless charging device 20. At this time, the wireless charging device 20 may be implemented as a removable type.

The main power supply unit 11 receives a power of 220 V from the outside and then drops the voltage of 3.3 V or 12.0 VM through a regulator provided inside the main power supply unit 11 and then supplies the power to the microcomputer 200 and the wireless charging apparatus 20, And outputs a voltage-reduced power supply.

The standby chipset 100 is a module for controlling the system standby mode of the set-top box 10 when operating power is applied from the outside, and generally consumes about 0.4 W of standby power. At this time, the microcomputer 200 for operating the set-top box 10 and the wireless charging device 20 incorporated in the set-top box 10 are configured so that the operating power is cut off and the zero power consumption state is maintained.

The microcomputer 200 controls the overall operation of the set-top box 10 for digital broadcast reception and further controls the operation of the wireless charging device 20. [ The microcomputer 200 controls the switching circuit 400 of the wireless charging device 20 so as to apply / cut off the power applied to the wireless charging device 20 from the main power supply 11. At this time, the microcomputer 200 is close to the wireless charging device 20 and reflects a detection feedback signal indicating the presence or absence of an external electronic device requesting wireless charging to the switching control.

Here, it is preferable that the wireless charging device 20 is disposed at a distance of about 2.5 mm from the ceiling of the housing 13. When the external electronic device E is placed on the top surface of the housing 13 of the set-top box 10 with the wireless charging device 20 being spaced from the ceiling of the housing 13 by a predetermined distance, the wireless charging device 20 And supplies power to the electronic device E mounted on the upper surface of the housing 13 in a non-contact manner.

The wireless charging device 20 includes a power supply coil part 21, a PCB substrate 22, a charge control chipset 300, and a switching circuit 400.

The power feeding coil part 21 is wound around the core block in an endless track form and is connected to the main power supply part of the set top box 10 so as to supply power to the external electronic device E, (11).

The PCB substrate 22 is mounted on the bottom surface of the wireless charging device 20 and operates as a power source applied from the main power supply unit 11 and includes a switching circuit 400 which is turned on and off under the control of the microcomputer 200 do.

The charge control chipset 300 is an apparatus for controlling an external wireless charging operation through the power supply coil section 21, for example, the BQ500410A chipset of TI Corporation of America. The charge control chipset 300 basically detects the presence or absence of an external electronic device E close to the wireless charging device 20 by attempting wireless transmission / reception with the external electronic device E. Upon receiving a response signal from the external electronic device E, the charge control chipset 300 generates a detection feedback signal and notifies the microcomputer 200 of the detection feedback signal.

Hereinafter, the present invention will be described in detail with reference to [Figure 4]. 4 is a circuit diagram of a wireless charging device 20 in which the standby power cutoff module according to the present invention operates. Referring to FIG. 3 and FIG. 4, the standby power control module of the set top box includes a standby chip set 100, a microcomputer 200, a position sensing toothset 300, and a switching circuit 400 .

The standby chipset 100 maintains the system standby state by the operation power of the set top box 10 and transmits a wake up signal to the microcomputer 200 in response to a user operation (e.g., remote control power on button press). In the system standby mode, the microcomputer 200 is in an inactive state (e.g., a sleep state) and is activated by a wake-up signal.

In the system standby mode, the microcomputer 200 maintains a zero power consumption state even when the operating power source 220V of the set top box 10 is applied. Also, in the system standby mode, the wireless charging device 20 maintains a zero power consumption state, which will be described later with reference to the microcomputer 200 and the switching circuit 400.

The microcomputer 200 is started from the inactive state by the wake up signal of the standby chipset 100 and periodically transmits an alternating standby control signal to the wireless charging device 20 to transmit the wireless charging device 20 Standby mode.

For example, the microcomputer 200 may transmit a standby control signal to the wireless charging device 20, which temporarily becomes active, for example, once per second. The switching circuit 400 switches on the main power source 12.0 VM by the standby control signal in the active state and supplies the main power source 12.0 VM to the power feeding coil part 21 and the charging control chipset 300, And is activated.

The charge control chipset 300 attempts to detect an external electronic device close to the wireless charging device 20, for example, to transmit a preset wireless signal to the outside and wait for a response. If there is a nearby external electronic device E, a wireless response can be received so that the charge control chipset 300 senses the presence of the electronic device E to be wirelessly charged. At this time, the charge control chipset 300 provides a detection feedback signal to the microcomputer 200 to inform the microcomputer 200 of the detection of the electronic device E to be wirelessly charged.

On the other hand, the microcomputer 200 sets the standby control signal back to the passive state if the detection feedback signal is not provided for a predetermined time (for example, 0.01 second) after temporarily activating the standby control signal. At this time, the switching circuit 400 is off-switched and the operation power is cut off by the feed coil unit 21 and the charge control chipset 300, thereby causing the wireless charger 20 to be in a zero power consumption state.

On the other hand, when the detection feedback signal is provided, the microcomputer 200 recognizes that there is an external electronic device E to perform wireless charging and maintains the standby control signal in an active state. At this time, the switching circuit 400 maintains the on-switching state in an active state so that the power supply coil part 21 and the charge control chipset 300 are provided with stable operation power, thereby charging the wireless power supply.

The switching circuit 400 is turned on and off by the standby control signal of the microcomputer 200 and disconnects or supplies the operating power supplied from the main power supply unit 11 to the wireless charging apparatus 20. [ In the system standby mode, since the microcomputer 200 does not operate, the standby control signal line is pulled up or pulled down to set the wireless charging device 20 to maintain the zero power consumption state.

The switching circuit 400 includes a first input terminal 410, an FET switch 420, a first output terminal 430, and a regulator 440.

The first input terminal 410 receives the main operation power supply 12.0 VM from the main power supply unit 11 of the set top box 10. The FET switch 420 switches on and off under the control of the microcomputer 200. When the FET switch 420 is turned on, the main operation power supply 12.0 VM is output to the first output terminal 430 at 12.0 V The feed coil section 21, the regulator 440, and the charge control chipset 300 operate normally. Conversely, when the FET switch 420 is switched off, the main operation power supply 12.0 VM is shut off and the wireless charging device 20 maintains the zero power consumption (0W) state.

The first output terminal 430 applies a power of 12.0 V applied through the first input terminal 410 to the power supply coil section 21 in the ON state of the FET switch 420 and supplies a power of 12.0 V to the regulator And then applied to the PCB substrate 22 through the second output terminal 450 at a voltage of approximately 3.3V_VCC after the voltage drop through the second output terminal 440.

The regulator 140 drops the operating power source 12.0 V provided from the first output terminal 130 to the operating voltage 3.3 V_VCC of the charge control chipset 300.

The microcomputer 200 controls the operation of the FET switch 420 of the switching circuit 400 and turns off the switching circuit 400 when the external electronic device E is not adjacent to the wireless charging device 20, When the external electronic device E is adjacent to the wireless charging device 20, the switching circuit 400 is turned on to turn on the wireless charging device 20, .

5 is a diagram showing an example of a circuit diagram of a wireless charging device including a standby power dedicated IC 400 ". Referring to FIG. 5, a wireless charging device having a stand- The switching circuit 400 'may include a first output terminal 430', a regulator 440 ', and a second output terminal 450', and may further include a standby power IC 400 ' .

The first output terminal 430 'corresponds to the first output terminal 430 of FIG. 4, the regulator 440' corresponds to the regulator 440 of FIG. 4, The first output terminal 450 'corresponds to the second output terminal 450 of FIG.

On the other hand, the standby power-dedicated IC 400 "is separately provided in the wireless charging device so that it consumes approximately 0.5 W of power even in a standby state in which the wireless charging device is not operated. The standby power dedicated IC 400 "consumes approximately 0.5 W of power even when the switch terminal S1 and the switch terminal S2 of the switching circuit 400 'are switched off, and the standby power dedicated IC 400" And the switch terminal S2 of the switching circuit 400 'are mutually switched on, the power of 12.0 V applied through the first output terminal 430' is applied to the second output terminal 450 ' ) To the power supply of 3.3V_VCC. In the case where the standby power dedicated IC 400 'is separately provided, the standby power corresponding to approximately 0.5 W is consumed even when the wireless charging device does not operate, which is not preferable.

FIG. 6 is a flowchart illustrating a standby power cut-off process of the wireless charging device according to the present invention. A method of controlling standby power for the set-top box 10 incorporating the wireless charging device 20 will be described with reference to FIG.

S100: When external power is applied to the set-top box 10, the set-top box 10 maintains the system standby state by the standby chipset 100. At this time, the microcomputer 200 is set to the inactive state (e.g., the sleep state). In addition, the switching circuit 400 is set to the switching off state to shut down the operation power supplied to the wireless charging device 20, thereby keeping the wireless charging device 20 in a zero power consumption state.

S110: As the user presses the power button of the front panel or depresses the power button of the remote control, the standby chipset 100 generates a wake-up signal, and accordingly the microcomputer 200 of the set-top box 10 starts up.

S120: The microcomputer 200 periodically transmits an alternate standby control signal to the wireless charging device 20 to control the wireless charging device 20 in the standby mode. At this time, the standby control signal transmitted from the microcomputer 200 to the wireless charging device 20 becomes active according to a specific period (e.g., 1 second). Accordingly, the operating power of the wireless charging device 20 is temporarily supplied as the switching circuit 400 is temporarily switched on, thereby causing the wireless charging device 20 to operate normally.

S130: The charge control chipset 300 tries to transmit / receive a radio signal according to a preset protocol to an external electronic device to detect the presence / absence of an external electronic device close to the wireless charging device 20. If an external electronic device capable of wireless charging exists in close proximity, a response signal will be sent. At this time, the charge control chipset 300 generates a detection feedback signal and provides it to the microcomputer 200.

S140: The microcomputer 200 determines whether there is an external electronic device to be wirelessly charged by the wireless charging device 20 through the detection feedback signal. If the external electronic device does not exist, the standby control signal is set to the passive state again, and temporarily set to the active state when the specific period is reached again. The standby control signal is an alternating signal that repeats active and passive states. Most of the time is passive and active for a very short period of time.

S150: When an external electronic device is detected, the microcomputer 200 keeps the standby control signal in an active state, thereby maintaining on-switching of the switching circuit 400, thereby stably supplying operating power to the wireless charging device 20 do. Whereby the wireless charging device 20 applies power to an external electronic device.

The present invention can also be embodied in the form of computer readable code on a computer readable recording medium. At this time, the computer-readable recording medium includes all kinds of recording apparatuses in which data that can be read by a computer system is stored.

Examples of the computer-readable recording medium include a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, an optical data storage, and the like, and may be implemented in the form of a carrier wave . The computer-readable recording medium can also be stored and executed by a computer-readable code in a distributed manner on a networked computer system. And functional programs, codes, and code segments for implementing the present invention can be easily deduced by programmers skilled in the art to which the present invention belongs.

As described above, the embodiments of the present invention have been disclosed in the present specification and drawings, and although specific terms have been used, they have been used only in a general sense to easily describe the technical contents of the present invention and to facilitate understanding of the invention. And is not intended to limit the scope of the invention. It will be apparent to those skilled in the art that other modifications based on the technical idea of the present invention are possible in addition to the embodiments disclosed herein.

10: Set-top box
11: Main power supply
13: Housing
20: Wireless charging device
21: Feeding coil part
22: PCB substrate
100: Standby chipset
200: Microcomputer
300: Charge Control Chipset
400, 400 ': switching circuit
400 ": Stand-by power IC
410: first input terminal
420: FET switch
430, 430 ': first output terminal
440, 440 ': Regulator
450, 450 ': second output terminal
460 ': third output terminal
E: Electronic devices
S1, S2: Switch terminal

Claims (5)

A module for controlling standby power for a set top box incorporating a wireless charging device,
A standby chip set (100) for maintaining a system standby state by the operating power of the set top box and generating a wake up signal in response to a user operation;
A microcomputer (200) for periodically controlling an alternate standby control signal while monitoring a detection feedback signal for the wireless charging device when the wireless charging device is activated by the wake-up signal of the standby chipset to control the wireless charging device in a standby mode;
A charge control chipset (300) for detecting an external electronic device in proximity to the wireless charging device in a standby mode of the wireless charging device and outputting the detection feedback;
Wherein the microcomputer is operable to switch on / off the operating power provided to the wireless charging device by the standby control signal of the microcomputer, to switch off in the system standby state to maintain the zero power consumption state of the wireless charging device, The standby power supply of the wireless charging device is switched off by the standby control signal of the microcomputer in accordance with the detection feedback signal to stably supply the operating power to the wireless charging device A switching circuit 400 for supplying power to an external electronic device;
A standby power control module of a set-top box having a built-in wireless charging device.
The method according to claim 1,
The switching circuit (400)
A first input terminal 410 receiving a main operation power from the main power supply of the set top box;
The main operation power is switched to the main power supply unit and the charge control chipset provided in the wireless charging apparatus in the switching on state and in the switching off state, An FET switch 420 for maintaining a zero power consumption state of the charging device;
A first output terminal (430) for transmitting the main operation power supply to the power supply coil part and the charge control chipset in an on state of the FET switch and outputting the main operation power supply;
Wherein the standby power cut-off module of the wireless charging device is built in the set-top box.
The method of claim 2,
The switching circuit (400) further comprises a regulator (440) for lowering the power output provided from the first output terminal to an operating voltage of the charge control chipset Standby power cut-off module of the charging device.
A method for controlling standby power for a set top box incorporating a wireless charging device,
When the power is supplied to the set top box, the set-top box maintains the system standby state by the standby chip set, and the switching circuit is set to the switching off state to cut off the operating power supplied to the wireless charging device, Maintaining a state;
Generating a wake-up signal by the standby chipset according to a user operation;
A step of the microcomputer of the set-top box being activated by the wake-up signal;
The microcomputer periodically transmits an alternate standby control signal while monitoring a detection feedback signal to the wireless charging device to perform standby mode control of the wireless charging device;
The charging control chipset of the wireless charging device senses an external electronic device in proximity to the wireless charging device when the switching circuit temporarily supplies the operating power of the wireless charging device by the alternate standby control signal;
Generating the detection feedback signal by the charge control chipset when the nearby external electronic device is sensed;
Setting the microcomputer to switch on the switching circuit by the detection feedback and stably providing operating power to the wireless charging device;
Wherein the standby power control method includes the steps of:
A computer-readable recording medium having recorded thereon a program for performing a method of controlling a standby power of a set top box incorporating a wireless charging device according to claim 4.

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