KR20220006190A - Electronic apparatus and power supply - Google Patents

Abstract

In accordance with the present invention, an electronic device includes: a main body having a function part including a display; and a power supply device supplying power to the function part of the main body. The main body includes: a power connection part to which the power supply device can be connected; and a power circuit having a power factor compensation part compensating for a power factor of power inputted from the power supply device connected through the power connection part. The power supply device includes: a cord connection part provided to receive an AC voltage; a rectification part rectifying the AC voltage inputted through the cord connection part into a DC voltage; a switching part connected with the rectification part; and a switching control part turning on or off the switching part such that the rectified DC voltage can be selectively supplied to the power circuit through the power connection part. Therefore, the present invention is capable of stably supplying power to an electronic device with high power consumption.

Description

ELECTRONIC APPARATUS AND POWER SUPPLY

The present invention relates to an electronic device and a power supply device, and more particularly, to an electronic device and a power supply device capable of receiving power through an external power supply device.

An electronic device such as a television (TV) allows an image based on content provided from an external source or stored therein to be displayed on a display.

The electronic devices in the home are often installed in a form in which commercial power (AC power) is supplied through an outlet installed on a wall or the like. The electronic device may be provided with, for example, an AC inlet as a connection unit for receiving AC power.

The AC inlet is a household and similar general purpose appliance coupler, and since the shape and size are standardized, it is difficult to change the design to an arbitrary design.

Accordingly, in an electronic device having a slim display such as a television, the standardized AC input unit may act as a factor limiting the degree of freedom in design of the slim product. Also, in a state in which the electronic device is installed, as the AC input unit protrudes to the outside, for example, to the rear, the aesthetics may be impaired.

The present invention provides an electronic device and a power supply device that can receive power from a power supply device that can be connected through a connector that is not limited by a standard so as to maintain a slim design of a display.

In addition, the present invention provides an electronic device capable of stably providing power to an electronic device having high power consumption through a small power supply device and a power supply device.

In addition, the present invention provides an electronic device and a power supply device that satisfy the regulation of standby power and improve the safety of a power supply device designed as a non-insulation type adapter.

According to an embodiment of the present invention, an electronic device includes: a main body provided with a functional unit including a display; and a power supply capable of supplying power to a functional unit of the main body, the main body comprising: a power connection unit to which the power supply unit can be connected; and a power circuit having a power factor compensating unit capable of compensating for a power factor of power input from a power supply connected through a power connection unit, wherein the power supply unit includes: a cord connection unit capable of receiving an AC voltage; a rectifying unit for rectifying an AC voltage input through a cord connection unit into a DC voltage; a switching unit connected to the rectifying unit; and a switching control unit for turning on or off the switching unit so that the rectified DC voltage is selectively supplied to the power circuit through the power connection unit.

The power supply device may further include a device connection unit capable of being coupled to the power connection unit, and the power connection unit and the device connection unit may be a slim connector.

The power supply device may further include a standby power supply unit for converting the first DC voltage rectified by the rectifying unit into a second DC voltage of a low level.

The rectifying unit may include: a first bridge diode unit capable of rectifying an input AC voltage and outputting it to the switching unit; and a second bridge diode unit capable of rectifying the input AC voltage and outputting it to the standby power unit.

Based on the generation of the external input signal, the power supply circuit may further include an operation control unit for turning on or off.

The operation control unit, based on the generation of the external input signal, causes the operation signal to be output to the switching control unit of the power supply device through the power connection unit, and the switching control unit turns on the switching unit in the off state based on the reception of the operation signal can do it

The operation control unit, based on the magnitude of the second DC voltage, identifies the output range of the power supply device, identifies whether the identified output range of the power supply device matches the output range of the power circuit, and identifies the matching Based on the result, the operation of the power circuit can be turned on or off.

Based on the identification that the output range of the power supply and the output range of the power circuit do not match, the processor may further include a processor configured to notify the user of a matching failure.

The operation control unit generates an adaptive signal having a voltage of a predetermined magnitude corresponding to the output range of the power circuit based on the generation of the external input signal, and transmits the generated adaptive signal to the switching control unit of the power supply through the power connection unit can be printed out.

The switching control unit, based on the voltage level of the adaptive signal, identifies the output range of the power circuit, identifies whether the identified output range of the power circuit and the output range of the power supply match, and determines whether the matching Based on it, the switching unit may be turned on or off.

The switching controller may output a signal indicating a matching failure through the power connection unit based on the identification that the output range of the power supply device and the output range of the power circuit do not match.

The processor may further include a processor configured to notify the user of a matching failure based on the identification that the output range of the power supply and the output range of the power circuit do not match using a signal received through the power connection unit.

The power supply device may further include a current sensing unit capable of outputting a signal to the switching controller based on the sensing of the overcurrent.

The power supply device includes: a standby power supply unit for converting the first DC voltage rectified by the rectifying unit into a second DC voltage of a low level; and a load sensing unit connected to the standby power unit and outputting a signal to the switching control unit based on sensing that current flows through the load.

The switching unit may include a relay switch.

On the other hand, the power supply device according to an embodiment of the present invention, the device connection unit to which the main body of the electronic device is provided with a functional unit including a display can be connected; a cord connection unit capable of receiving an AC voltage; a rectifying unit rectifying the AC voltage input through the cord connection unit into a first DC voltage; a switching unit connected to the rectifying unit and configured to supply a first DC voltage to the main body of the electronic device through the device connection unit when turned on; a switching control unit that turns on or off the switching unit so that the rectified first DC voltage is selectively supplied to the main body of the electronic device through the device connection unit; and a standby power supply unit that converts the first DC voltage into a second DC voltage of a low level and supplies the second DC voltage to the functional unit of the main body of the electronic device through the device connection unit.

The rectifying unit may include: a first bridge diode unit capable of rectifying an input AC voltage and outputting it to the switching unit; and a second bridge diode unit capable of rectifying the input AC voltage and outputting it to the standby power unit.

Based on the sensing of the overcurrent, a current sensing unit capable of outputting a signal to the switching control unit may be further included.

It may further include a load sensing unit connected to the standby power supply and outputting a signal to the switching control unit based on sensing that current flows through the load.

The switching unit may include a relay switch.

According to the electronic device and the power supply device according to the embodiment of the present invention as described above, the design freedom can be improved by providing a connection part that is not limited by a standard to maintain a slim design of the display.

In addition, it is possible to stably provide power to an electronic device having high power consumption through a small power supply device.

In addition, the safety of a power supply device that satisfies the regulation of standby power and is designed as a non-insulation type adapter may be further improved.

1 illustrates an example of an electronic device according to an embodiment of the present invention.
2 is a diagram conceptually illustrating an example in which a main body of an electronic device and a power supply device are connected according to an embodiment of the present invention.
3 is a view of FIG. 2 viewed from the side.
4 is a block diagram illustrating the configuration of a main body of an electronic device according to an embodiment of the present invention.
5 is a block diagram illustrating the configuration of a power supply connected to the main body.
6 is a diagram illustrating a structure for supplying power from a power supply device to a main body of an electronic device according to a first embodiment of the present invention.
7 is a diagram illustrating a structure for supplying power from a power supply device to a main body of an electronic device according to a second embodiment of the present invention.
8 is a diagram illustrating a structure for supplying power from a power supply device to a main body of an electronic device according to a third embodiment of the present invention.
9 is a view showing an example of a load sensing unit in the power supply device according to the third embodiment of the present invention.
10 is a flowchart illustrating an operation of matching a power output range according to an embodiment of the present invention.
11 is a diagram illustrating a structure in which a power output range matching operation is performed using an adaptive signal according to another embodiment of the present invention.
12 is a flowchart illustrating an operation of matching a power output range according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numbers or symbols refer to components that perform substantially the same functions, and the size of each component in the drawings may be exaggerated for clarity and convenience of description. However, the technical spirit of the present invention and its core configuration and operation are not limited to the configuration or operation described in the following embodiments. In describing the present invention, if it is determined that a detailed description of a known technology or configuration related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted.

In an embodiment of the present invention, terms including an ordinal number such as first, second, etc. are used only for the purpose of distinguishing one element from another element, and the expression of the singular is plural, unless the context clearly dictates otherwise. includes the expression of In addition, in an embodiment of the present invention, terms such as 'consisting', 'comprising', 'having' and the like are one or more other features or numbers, steps, operations, components, parts, or the presence of a combination thereof. Or it should be understood that the possibility of addition is not precluded in advance. In addition, in an embodiment of the present invention, a 'module' or 'unit' performs at least one function or operation, and may be implemented as hardware or software or a combination of hardware and software, and is integrated into at least one module. and can be implemented. Further, in an embodiment of the present invention, at least one of the plurality of elements refers to all of the plurality of elements as well as each one or a combination thereof excluding the rest of the plurality of elements.

1 illustrates an example of an electronic device according to an embodiment of the present invention.

As shown in FIG. 1 , the electronic device according to an embodiment of the present invention may include a main body 100 and an external power supply 200 connectable to the main body 100 .

The power supply 200 may, for example, be connected to a power connector 110 of the main body 100 and operate as an adapter capable of supplying power to the main body 100 . Here, the power supply 200 may be designed as a non-insulated type adapter.

In an embodiment, the power supply 200 may be implemented as a DC power supply capable of rectifying an input AC voltage (AC voltage) into a DC voltage (DC voltage). Here, the power supply 200 includes a bridge diode block as a rectifier for rectifying an AC voltage into a DC voltage, and serves as a bridge connecting the power cord 221 and the main body 100 . Let it be a bar bridge adapter (bridge adapter) as an example.

At one end of the cable 211 of the power supply device 200 , a device connection part 210 that can be coupled or fastened to the power connection part 110 of the main body 100 may be provided.

The DC voltage rectified by the power supply 200 may be output to the main body 100 through the cable 211 and the device connection unit 210 . The DC voltage thus output may be input to the main body 100 through the power connection unit 110 and supplied as a standby voltage or an operating voltage of the electronic device.

The power supply device 200 may further include a cord connection unit 220 for receiving commercial power (AC voltage) through a power cord 221 coupled to an outlet installed on a wall, such as at home or in an office. .

In one embodiment, as the main body 100 and the power supply device 200 are interconnected/connected through the cable 211 , the main body 100 of the electronic device receives power through the power supply device 200 . can

However, in the present invention, the connection method between the main body 100 and the power supply device 200 is not limited to the embodiments of the present specification, and a wired or wireless interface according to various standards may be applied. That is, in the following embodiments, a case in which the main body 100 and the power supply device 200 are connected by a wired interface will be described as an example, but in some cases, the main body 100 and the power supply device 200 may use a power signal and It may be connected by a wireless interface capable of transmitting and receiving control/data signals.

2 is a diagram conceptually illustrating an example in which a main body of an electronic device and a power supply device are connected according to an embodiment of the present invention, and FIG. 3 is a side view of FIG. 2 .

In an embodiment, the power connector 110 may be provided on a power board of the electronic device body 100 as shown in FIGS. 2 and 3 . However, the position of the power connection unit 110 is not limited to the illustrated bar, and is installed in one position of the main body 100, and is connected to the power board (coupling), so that the power provided from the power supply device 200 is supplied to the main body ( 100) may be provided so that it can be supplied.

A device connection unit 210 is provided at one end of the cable 211 of the power supply 200 , and may be coupled to the power connection unit 220 of the main body 100 .

According to an embodiment of the present invention, since the power supply device 200 rectifies an AC voltage into a DC voltage and supplies it to the main body 100 , the power connection unit 110 and the device connection unit 210 can transmit and receive DC voltage. It can be implemented as a DC connector.

The DC connector can freely design the shape and size as opposed to the cord connection unit 220 implemented as an AC connector standardized in shape and size.

In an embodiment, the power connector 110 and the device connector 210 may be implemented as a slim type connector having a thin thickness, as shown in FIGS. 2 and 3 .

The power connector 110 and the device connector 210 implemented as a slim connector do not protrude from the outside of the electronic device, that is, to the rear of the main body 100 , as shown in FIG. 3 , in a state of being coupled to each other. . Accordingly, it is easier to install the main body 100 of the electronic device in a wall-mounted form at home or the like, and the aesthetics of the electronic device is not impaired in the installed state. In addition, the design freedom of the slim body 100, for example, a slim TV is very high.

In an embodiment, the main body 100 includes a screen for displaying an image, that is, the display 120 as shown in FIGS. 1 to 3 .

The electronic device according to an embodiment of the present invention may display an image of content received from an external signal source, that is, a source or stored therein, on the display 120 .

In an embodiment, the display 120 may be included in a functional unit (also referred to as an operation performing unit or an operating unit) capable of performing an operation or function by receiving power.

The function unit may include an electronic device as a configuration provided to perform a function of the electronic device, that is, an operation. The function unit includes, for example, the display 120 , a driving unit capable of driving the display 120 ( 130 in FIG. 4 ), and a processor ( 140 in FIG. 4 ) provided to control the operation or function of the electronic device. Including, the type of the electronic device in the present invention is not limited. That is, various components provided as a load that consumes power in the electronic device may be included in the functional unit.

The electronic device may receive content from at least one source.

In the present invention, the type of the source providing the content is not limited, and for example, an optical disc playback device such as a set-top box (STB), Blu-ray or DVD (digital versatile disc); and a computer (PC) including a desktop or laptop, a mobile device including a smart pad such as a smart phone or a tablet, and the like. Also, the main body 100 may receive content provided in the form of a file according to real-time streaming through a wired or wireless network.

In an embodiment, the electronic device is implemented as a television (TV) capable of displaying broadcast content.

When the electronic device is a television, the main body 100 may receive broadcast content based on at least one of a broadcast signal, broadcast information, or broadcast data received from a transmission device of a broadcast station.

The electronic device may wirelessly receive a radio frequency (RF) signal transmitted from a broadcasting station, that is, a broadcasting signal. can be provided.

Here, the broadcast signal may be received through a terrestrial wave, cable, satellite, or the like, and the signal source is not limited to a broadcasting station. In other words, any device or station capable of transmitting and receiving data may be included in the source of the present invention.

In an embodiment, the electronic device may receive a signal through an additional device connectable through a wired or wireless interface. The additional device is, for example, a media box capable of outputting a signal to display images of various contents on the main body 100, and uses a single cable such as a transparent cable (invisible cable) to connect the main body ( 100), in that it is a device connected to the OC box (One Connect Box).

The standard of a signal received from the electronic device may be configured in various ways corresponding to the implementation form of the device, and the electronic device includes, for example, a high definition multimedia interface (HDMI) or a composite provided in the main body 100 . Content may be received through a wired interface unit such as video, component video, super video, Syndicat des Constructeurs d'Appareils Radiorιcepteurs et Tιlιviseurs (SCART), and a universal serial bus (USB).

The electronic device may receive content from various external devices including a server through wired or wireless network communication, and the type of communication is not limited.

Specifically, the electronic device may perform at least one of wireless communication through an access point (AP) or wireless communication directly connected to another device without an AP. For example, the main body 100 may receive content from an image source through a wireless interface unit such as Wi-Fi, Wi-Fi Direct, or Bluetooth. Also, the electronic device may receive content through a wired interface unit such as Ethernet provided in the main body 100 .

The electronic device may process the received content in various ways as described above so that an image of the corresponding content is displayed on the display 120 .

Also, the electronic device may receive commands according to various user inputs from a peripheral device such as a remote control directly or through an additional device. Here, the command may be received from the remote control through wireless communication, and the wireless communication may include infrared (IR) communication of a predetermined frequency band, Bluetooth, or the like.

In an embodiment, the electronic device may operate as a smart TV or Internet Protocol TV (IP TV). Smart TV can receive and display broadcast signals in real time, and has a web browsing function, so it is possible to search and consume various contents through the Internet at the same time as displaying real-time broadcast signals. to be. In addition, since the smart TV includes an open software platform, it can provide interactive services to users. Accordingly, the smart TV may provide a user with various contents, for example, an application providing a predetermined service through an open software platform. These applications are applications that can provide various types of services, and include, for example, applications that provide services such as SNS, finance, news, weather, maps, music, movies, games, and e-books.

Hereinafter, specific configurations of an electronic device including a main body and a power supply device according to an embodiment of the present invention will be described with reference to the drawings.

4 is a block diagram illustrating a configuration of a main body of an electronic device according to an embodiment of the present invention, and FIG. 5 is a block diagram illustrating a configuration of a power supply device connected to the main body.

However, the configuration of the main body 100 and the power supply device 200 shown in FIGS. 4 and 5 is only one example, and the electronic device and the power supply device according to another embodiment are shown in FIGS. 4 and 5, respectively. It may be implemented in a configuration other than the configured configuration. For example, the main body 100 of the present invention has a configuration other than the configuration shown in FIG. 4 (eg, a storage unit capable of storing content, a user input unit capable of receiving a user input such as a remote control or an operation panel, etc.) ) may be added or implemented in a form in which at least one of the configurations shown in FIG. 4 is excluded. In addition, the main body 100 and the power supply device 200 of the present invention may be implemented in a form in which a part of the configuration configured in FIGS. 4 and 5 is changed.

The main body 100 according to an embodiment of the present invention may include a power connection unit 110 as shown in FIG. 4 .

The power connection unit 110 may be coupled to the device connection unit 210 of the power supply device 200 , and when coupled, the main body 100 of the electronic device is provided to receive power from the power supply device 200 .

In an embodiment, the power connection unit 110 may be implemented as a DC connector capable of receiving the DC voltage rectified from the power supply device 200 . The power connector 110 implemented as a DC connector in the present invention is not limited in shape and size, and as described with reference to FIGS. 2 and 3 , a slim connector is an example.

In an embodiment, the power connection unit 110 may be implemented as a wired interface unit capable of transmitting and receiving control signals to and from the device connection unit 210 as well as a power signal. That is, the power connection unit 110 may have the form of a connector, terminal or port provided with a plurality of pins provided to correspond to a plurality of signal lines of the cable 211 of the power supply device 200 .

A plurality of pins provided in the power connection unit 110 may be defined to transmit or receive signals each having predetermined characteristics. A signal transmitted or received through each pin may include a power signal or a control signal.

In an embodiment, the power connection unit 110 may include 4 or 5 pins, but the number of pins of the device connection unit 210 of the main body 100 in the electronic device of the present invention is not limited.

The body 100 may include a display 120 .

The implementation method of the display 120 is not limited, and for example, liquid crystal, plasma, light-emitting diode, organic light-emitting diode, surface conduction electron gun ( It can be implemented in various display methods such as surface-conduction electron-emitter), carbon nano-tube, and nano-crystal.

In an embodiment, the display 120 may include a screen for displaying an image, that is, a panel constituting the screen.

In an embodiment, an image of content received from a source may be displayed on the display 120 .

In an embodiment, a user interface (UI) (hereinafter also referred to as a graphic user interface (GUI)) including a message for notifying a user about an operation or state of the electronic device may be displayed on the display 120 . have.

The body 100 may include a driving unit 130 .

The driving unit 130 may drive the display 120 based on a signal output from the processor 140 to be described later.

In an embodiment, the driving unit 130 may be included in the main board 11 of the main body 100 as shown in FIG. 4 . In this case, the main board 11 may be implemented as an image board including a timing controller (hereinafter also referred to as a T-con) that generates a timing control signal based on processing of an image signal.

In another embodiment, the main body 100 is separated from the main board, that is, the image board, and may be implemented in a form in which a Ticon board provided with a timing controller, that is, a driving board is provided separately. In this case, the driving unit 130 may be included in the driving board.

The body 100 may include a processor 140 .

The processor 140 controls all components of the main body 100 to operate. The processor 140 includes a control program (or instructions) for performing such a control operation, a non-volatile memory in which the control program is installed, a volatile memory in which at least a part of the installed control program is loaded, and the loaded control program. It may include at least one general-purpose processor that executes, for example, a microprocessor, an application processor, or a central processing unit (CPU).

The processor 140 may include a single core, a dual core, a triple core, a quad core, and multiple cores thereof. The processor 140 includes a plurality of processors, for example, a main processor and a sub processor operating in a standby mode (eg, only standby power is supplied and does not operate as a display device). ) may be included. In addition, the processor, ROM, and RAM may be interconnected through an internal bus.

In an embodiment, the processor 140 may include an image processing unit that performs various preset processes on a content signal received from a source. The processor 140 may display an image corresponding to the image signal on the display 120 by outputting an output signal generated or combined by performing image processing to the display 120 .

The image processing unit may include a decoder that decodes the image signal to correspond to the image format of the main body 100 , and a scaler that adjusts the image signal to match the output standard of the display 110 .

In one embodiment, the decoder is eg, but not limited to, an H.264 decoder. That is, the video decoder according to the embodiment of the present invention can be implemented as a decoder according to various compression standards, such as a Moving Picture Experts Group (MPEG) decoder or a High Efficiency Video Codec (HEVC) decoder.

Also, in the present invention, the type of content processed by the image processing unit is not limited. For example, the content that can be processed by the image processing unit may further include not only a moving picture such as a video, but also a picture such as a JPEG file, a still image such as a background screen, and a menu item of the UI.

The type of the image processing process performed by the image processing unit of the present invention is not limited, for example, de-interlacing for converting an interlace broadcasting signal into a progressive method, and image quality improvement. At least one of various processes such as noise reduction, detail enhancement, frame refresh rate conversion, and line scanning may be performed.

In an embodiment, the image processing unit may be included in a main board in which circuit configurations such as various chipsets, memories, electronic components, and wiring for performing each process are mounted on a printed circuit board (PCB). In this case, the processor 140 including the tuner and the image processing unit may be provided on a single board in the main body 100 .

Of course, this is only an example, and each component of the main body 100 may be disposed on a plurality of printed circuit boards connected to each other communicatively.

That is, as another embodiment, the main body 100 of the electronic device may be implemented in such a way that the processor 140 including the image processing unit is provided on an image board separate from the driving board including the driving unit 130 . .

In the electronic device according to an embodiment of the present invention, the processor 140 may process the corresponding signal so that an image of a predetermined channel is displayed based on the broadcast signal. Also, the processor 140 may process the signal so that an image of a predetermined content is displayed based on the signal received from the server.

In an embodiment, the processor 140 may be implemented in a form included in a main SoC mounted on a PCB embedded in the main body 100 of the electronic device.

The control program may include program(s) implemented in the form of at least one of a BIOS, a device driver, an operating system, firmware, a platform, and an application. As an embodiment, the application is pre-installed or stored in the main body 100 when the main body 100 is manufactured, or receives data of the application from the outside when used later and the main body 100 based on the received data. can be installed on Data of the application may be downloaded to the main body 100 from, for example, an external server such as an application market. Such an external server is an example of the computer program product of the present invention, but is not limited thereto.

The control program may be recorded in a storage medium readable by a device such as a computer. The device-readable storage medium may be provided in the form of a non-transitory storage medium or a non-volatile storage medium. Here, 'non-transitory storage medium' is a tangible device and only means that it does not contain a signal (eg, electromagnetic wave). It does not distinguish the case where it is stored as For example, the 'non-transitory storage medium' may include a buffer in which data is temporarily stored.

The body 100 may include a power circuit 150 .

In the electronic device according to an embodiment of the present invention, the power circuit 150 may be provided on the power board 13 of the main body 100 .

The power circuit 150 receives a DC voltage input from the power supply device 200 through the power connector 110 , and based on the received DC voltage, the driver 130 , the processor 140 , and the display 120 . It is possible to supply operating power to each component of the main body 100, such as.

In an embodiment, the power circuit 150 may include a power factor corrector (PFC) that maintains a constant DC voltage and adjusts, that is, improves a power factor (PF). The power factor corrector may be implemented as a power factor corrector circuit.

The main body 100 may satisfy PF and THD (total harmonic distortion) regulations of the product by the operation of the power factor correction unit.

In one embodiment, the power circuit 150 may include a DC-DC converter that converts the input DC voltage to have a level required for the operation of each component of the main body 100 .

The main body 100 may include an operation control unit 160 .

The operation control unit 160 may control the operation of the power circuit 150 . In an embodiment, the operation control unit 160 may be provided on the power board 13 .

The operation control unit 160 may control the power circuit 150 to be turned on or off based on the generation of an external input signal.

In an embodiment, the operation control unit 160 may be implemented as an integrated circuit (IC) in the form of a chip, but is not limited thereto.

In an embodiment, the operation control unit 160 may control the power circuit 150 to operate normally, based on the generation of an external input signal. Here, the external input signal may be generated by, for example, a user's manipulation of a power button provided on the remote control or detection of a voice including a wakeup keyword uttered by the user in a voice acquisition unit such as a microphone.

An electronic device according to an embodiment of the present invention is configured to receive an operating voltage from a standby mode (hereinafter also referred to as a standby mode) in which a standby voltage is supplied based on an external input signal. Hereinafter, also referred to as an operation mode or a normal mode).

The operation control unit 160 receives, based on an external input signal, an operation signal (PS_ON signal) that causes the power supply 200 to output an operation voltage to the main body 100 of the electronic device through the power connection unit 110 . It may be output to the supply device 200 .

A specific operation in which the main body 100 outputs an operation signal to the power supply device 200 and receives operating power from the power supply device 200 in response thereto will be described in more detail in the following embodiments.

As shown in FIG. 5 , the power supply 200 according to an embodiment of the present invention may include a device connection unit 210 .

The device connection unit 210 may be coupled to the power connection unit 110 of the body 100 , and is provided so that power can be transmitted from the power supply device 200 to the body 100 when coupled.

In an embodiment, the device connection unit 210 may be implemented as a DC connector capable of outputting a rectified DC voltage. The device connection unit 210 implemented as a DC connector in the present invention is not limited in shape and size, and as described with reference to FIGS. 2 and 3 , a slim connector is an example.

In an embodiment, the device connection unit 210 may be implemented as a wired interface unit capable of transmitting and receiving data or control signals to and from the power connection unit 110 as well as a power signal. That is, the device connection unit 210 may have the form of a connector, terminal, or port provided with a plurality of pins provided to correspond to a plurality of signal lines of the cable 211 .

A plurality of pins provided in the device connection unit 210 may be defined to transmit or receive signals each having predetermined characteristics. A signal transmitted or received through each pin may include a power signal or a control signal.

In one embodiment, the device connection unit 210 may have 4 or 5 pins, but the number of pins of the device connection unit 210 in the power supply device 200 of the present invention is not limited.

The power supply 200 may include a cord connection unit 220 .

The cord connection unit 220 may receive commercial power (AC voltage) through a power cord 221 coupled to an outlet installed on a wall, such as a home or office.

In one embodiment, the cord connection unit 220 can input a predefined AC voltage (AC voltage), and can be implemented as a standardized AC inlet such as IEC Appliance Couplers.

As shown in FIG. 5 , the power supply 200 may include a rectifying unit 230 .

The rectifying unit 230 may output a DC voltage obtained by rectifying the AC voltage input through the cord connection unit 220 .

In one embodiment, the rectifying unit 230 includes an EMI filter unit (electromagnetic interference filter) 231 for removing noise of the input AC voltage, and a bridge diode unit 232 composed of a plurality of diodes for rectifying the input AC voltage. can do.

In an embodiment, the bridge diode unit 232 may be implemented as a full-wave diode bridge circuit for full-wave rectification of an AC voltage, including four diodes connected by a bridge, but is not limited thereto.

In an embodiment, a plurality of bridge diode units 232 may be provided in the rectifying unit 230 . In this case, the DC voltage rectified by each bridge diode unit may be applied to the main body 100 of the electronic device as either an operating voltage or a standby voltage.

The power supply 200 may include a switching unit 240 .

In an embodiment, the switching unit 240 may be implemented to include a relay switch that is turned on or off according to a control signal. However, in the present invention, the implementation form of the switching unit 240 is not limited to a relay switch, and may include a semiconductor switching element in some cases.

In an embodiment, the switching unit 240 may include an A-type relay element that maintains an off state in normal times to which no signal is applied, and is turned on when a control signal for operation is applied. However, the implementation form of the switching unit 240 in the present invention is not limited to the above-described bar.

The switching unit 240 may serve to prevent the high voltage output from being directly applied to the device connection unit 210 by being turned off in a state in which the power supply device 200 is not connected to the main body 100 . Accordingly, the safety of the power supply 200 implemented as a non-isolated adapter can be secured.

The power supply 200 may include a switching control unit 250 .

In an embodiment, the switching controller 250 may be implemented as an integrated circuit (IC) in the form of a chip, but is not limited thereto.

The switching control unit 250 may output a control signal for turning the switching unit 240 on or off.

In an embodiment, the switching control unit 250 turns on the switching unit 240 on the basis of an operation signal, for example, a PS_ON signal, is input from the main body 100 through the device connection unit 210 . can be printed out.

Here, the operation signal is, based on the identification of the generation of the external input signal in the main body 100 of the electronic device, the power supply device 200 from the operation control unit 160 of the main body 100 through the power connection unit 110 . can be output as

As the switching unit 240 conducts, that is, turns on, the DC voltage rectified by the rectifying unit 230 is applied to the main body 100 as an operating voltage (hereinafter, also referred to as a first DC voltage) through the switching unit 240 . can be authorized

The power supply 200 may include a current sensing unit 260 .

The current sensing unit 260 may sense that an overcurrent flows in the power supply 200 .

In an embodiment, the current sensing unit 260 may output a preset signal to the switching control unit 250 based on the current level flowing from the rectifying unit 230 . Specifically, when an overcurrent greater than a predetermined reference current flows in the power supply device 200 , a predetermined signal from the current sensing unit 260 to the switching control unit 250 , for example, high or low ) signal can be applied. Here, the reference current may be preset in correspondence with the size of the available power designed by the power supply device 200 .

The current sensing unit 260 may be implemented as an overcurrent detection circuit capable of sensing the magnitude of the current flowing through the rectifying unit 230 . The current sensing unit 260 may sense the magnitude of the current in various ways, such as using a resistor, and the implementation form is not limited.

The switching control unit 250 may output a control signal for turning off the switching unit 240 when a preset signal corresponding to overcurrent detection is input from the current sensing unit 260 . Accordingly, the switching unit 240 can serve as a protection circuit of the power supply device 200 .

The power supply 200 may include a standby power unit 270 .

The standby power supply unit 270 allows the DC voltage rectified by the rectification unit 230 to be applied to the main body 100 as a standby voltage.

In an embodiment, the standby power unit 270 may include an insulating element, for example, a transformer, and may be implemented in a form in which power output from the transformer can be stored in a capacitor.

The DC voltage output from the rectifying unit 230 may be converted into a low level standby voltage (hereinafter also referred to as a second DC voltage) according to the turn ratio of the transformer constituting the standby power supply unit 270 . The capacitor may satisfy the PF regulation by having a relatively small capacitance of 1~2uF or less.

However, the embodiment of the standby power unit 270 in the present invention is not limited to the above-described bar.

In an embodiment, the standby power unit 270 may output a standby voltage regardless of whether the switching unit 240 is on or off. Here, the standby voltage may be set to have a sufficiently small voltage according to the standby power regulation.

In one embodiment of the present invention as described above, as a part of a power circuit for supplying power to an electronic device, the rectifier 230 is separated and designed in the external power supply 200 connectable to the main body 100, thereby providing a small power supply. Power can be stably provided to the main body 100 with high power consumption through the supply device 200 .

In addition, the power supply device 200 divides a main power part for supplying an operating voltage and a standby power part for supplying a standby voltage, and a switching unit ( 240), the electronic device can ensure the safety of the non-isolated adapter power supply while complying with the standby power regulation.

Hereinafter, embodiments in which power is supplied from the power supply device to the main body of the electronic device will be described with reference to the drawings.

6 is a diagram illustrating a structure for supplying power from a power supply device to a main body of an electronic device according to a first embodiment of the present invention.

The configurations of the main body 100 and the power supply device 200 shown in FIG. 6 correspond to the configurations of the body 100 shown in FIG. 4 and the configurations of the power supply device 200 shown in FIG. 5 , respectively. do. Accordingly, components of the same name perform the same operation, and thus a redundant description may be omitted.

As shown in FIG. 6 , the main body 100 and the power supply 200 are predetermined through a plurality of signal lines of the cable 211 based on the combination of the power connector 110 and the device connector 210 . It is possible to transmit or receive a power signal or a control signal having a characteristic. 6 shows an example in which five signal lines are provided in the cable 211, including a PS_ON signal line through which an operation signal, that is, a PS_ON signal, is transmitted and received.

In a state in which the power supply device 200 is connected to the main body 100 according to the combination of the device connector 210 and the power connector 110 , the power cord 221 of the power supply device 200 is connected to an outlet installed on a wall, etc. Then, the power supply 200 may receive an AC voltage (AC voltage) through the cord connection unit 220 .

In the case of the initial connection, the switching unit 240 does not operate, and thus maintains an off state. The standby power supply unit 270 of the power supply device 200 generates a second DC voltage of a predetermined size as the standby voltage VSTB regardless of whether the switching unit 240 is on or off, and the second DC voltage, that is, , the standby voltage VSTB is output by the device connection unit 210 via the cable 211 and transmitted to the main body 100 .

The main body 100 of the electronic device may receive the second DC voltage as the standby voltage VSTB through the power connection unit 110 . Here, the electronic device operates in the standby mode, and the received second DC voltage, that is, the standby voltage VSTB, operates in a part of the main board 11 through the operation control unit 160 , for example, in the standby mode. It may be supplied as a part of the processor 140 or a sub-processor.

In the electronic device in the standby mode, the main board 11 of the main body 100 may detect the generation of an external input signal (hereinafter, also referred to as a first external input signal). The external input signal may be generated by, for example, a user's manipulation of a power button provided on the remote control or detection of a voice including a wake-up keyword uttered by the user in a voice acquisition unit such as a microphone.

Based on the generation of the first external input signal, the PS_ON signal may be generated as an operation signal (or operation start signal) for driving the power circuit 150 , that is, the power circuit in the main board 11 . The operation signal (PS_ON signal) is output to the operation control unit 160 , and the operation control unit 160 operates, that is, to turn on the power circuit 150 based on the operation signal (PS_ON signal) being input. can be controlled

The operation signal (PS_ON signal) may be output to the power supply device 200 through the power connection unit 110 by the operation control unit 160 . Here, the operation signal (PS_ON signal) may be transmitted to the power supply device 200 through the signal line of the cable 211 allocated thereto.

The operation signal (PS_ON signal) input from the main body 100 may be transmitted to the switching control unit 250 of the power supply device 200 through the device connection unit 210 . When receiving the operation signal, that is, the PS_ON signal, the switching control unit 250 may output a control signal (on signal) for turning on the switching unit 240 . The switching unit 240 receives a control signal from the switching control unit 250 and is turned on, that is, is conductive.

When the switching unit 240 is ON, that is, in a conductive state, the first DC voltage rectified by the rectifying unit 230 is transferred to the main body 100 as the operating voltage BD_OUT through the switching unit 240 . can be authorized Here, the first DC voltage output through the switching unit 240 is transmitted to the main body 100 through the device connection unit 210 .

Specifically, the AC voltage input through the cord connection unit 220 may be output as a DC voltage rectified by the EMI filter unit 231 , and noise is removed by the EMI filter unit 231 . In an embodiment, the DC voltage rectified by the bridge diode unit 232 is a first DC voltage of a predetermined size, and may be transmitted as an operating voltage BD_OUT to the main body 100 through the switching unit 240 in the turned-on state. have.

The operating voltage BD_OUT transferred to the main body 100 , that is, the first DC voltage, may be input to the power circuit 150 . Here, since the power circuit 150 is in an ON state according to the control of the operation control unit 160 based on the operation signal, the first DC voltage is applied to each component of the main board 11 by the power circuit 150 . can be supplied to

In an embodiment, the power factor of the first DC voltage is improved by the power factor compensator of the power supply circuit 150 and is converted to have a size required for the operation of each component of the electronic device by the DC-DC converter, and the electronic device It may be supplied as operating power to each component provided in the main body 100 of the.

Accordingly, the electronic device is switched to the normal mode and can perform a normal operation such as displaying an image on the display 120 .

Meanwhile, since the standby power unit 270 of the power supply device 200 is implemented to output the second DC voltage to the main body 100 regardless of whether the switching unit 240 is on or off, the electronic device operates in a normal mode. Standby voltage can still be applied.

In a state in which the electronic device normally performs an operation such as displaying an image in the normal mode, the main board 11 of the main body 100 receives an external input signal (hereinafter, generation of a second external input signal) can be detected.

Based on the generation of the second external input signal, the PS_OFF signal may be generated as an operation stop signal (or termination signal) for stopping the driving of the power circuit 150 , that is, the power circuit in the main board 11 . The operation stop signal (PS_OFF signal) is output to the operation control unit 160 , and the operation control unit 160 stops the operation of the power circuit 150 based on the input of the operation stop signal (PS_OFF signal), that is, turns off. (OFF) can be controlled.

The operation stop signal (PS_OFF signal) may be output to the power supply device 200 by the operation control unit 160 . In an embodiment, the operation stop signal (PS_OFF signal) may be transmitted to the power supply device 200 through a signal line allocated to the operation signal (PS_ON signal).

The operation stop signal (PS_OFF) signal input from the main body 100 is transmitted to the switching control unit 250 , and the switching control unit 250 may output a control signal (off signal) for turning off the switching unit 240 . . The switching unit 240 may be turned off by receiving a control signal from the switching unit.

When the switching unit 240 is turned off, the operating power (first DC power) is no longer output to the main body 100 , and only the low-level standby voltage VSTB generated by the standby power unit 270 , that is, , a second DC voltage is applied to the body 100 .

Accordingly, the electronic device is switched to the standby mode, and the received second DC voltage, that is, the standby voltage VSTB, is configured in a part of the main board 11 through the operation control unit 160, for example, in the standby mode. It may be supplied as a part or sub-processor of the operating processor 140 .

7 is a diagram illustrating a structure for supplying power from a power supply device to a main body of an electronic device according to a second embodiment of the present invention.

The power supply device 200 of the second embodiment shown in FIG. 7 is compared with the power supply device 200 of the first embodiment shown in FIG. 6 , the rectifying unit 230 includes a plurality of bridge diode units, for example, , which includes a first bridge diode unit 233 and a second bridge diode unit 234 , which is characterized. Accordingly, since components other than the first and second bridge diode units 233 and 234 perform the same operation as described with reference to FIG. 6 , the overlapping description may be omitted.

In the power supply device 200 according to the embodiment of FIG. 7 , noise is removed from the input AC voltage by the EMI filter unit 231 of the rectifying unit 230 , and the first bridge diode unit 233 and the second bridge diode unit 233 . Each may be output to the unit 234 .

The first bridge diode unit 233 rectifies the input AC voltage into a DC voltage of a predetermined magnitude, that is, a first DC voltage, and the first DC voltage is the main body as an operating voltage of the electronic device through the switching unit 240 . (100) may be provided.

The second bridge diode unit 234 may rectify the input AC voltage into a DC voltage having a predetermined magnitude. Here, the magnitude of the DC voltage rectified by the second bridge diode unit 234 may be different from or the same as the first DC voltage.

The DC voltage rectified by the second bridge diode unit 234 is converted or generated into a DC voltage of a predetermined size by the standby power supply unit 270 , that is, a second DC voltage, and the second DC voltage is the standby voltage VSTB. ) may be provided as the electronic device 1 .

In the power supply device 200 according to the embodiment of FIG. 7 , a main power part for supplying operating power and a bridge diode block respectively corresponding to a standby power part for supplying standby power are separately designed. Accordingly, as shown in FIG. 7, by separation of the ground (GND), the leakage current caused by noise and potential fluctuations generated in the standby power supply unit 270 is the device connection part ( 210), so that safety can be further improved.

As shown in FIG. 7 , the main body 100 and the power supply 200 are connected in advance through a plurality of signal lines of the cable 211 based on the coupling of the power connector 110 and the device connector 210 to each other. It is possible to transmit or receive a power signal or a control signal having a predetermined characteristic.

When the power cord 221 of the power supply device 200 is connected to an outlet installed on a wall or the like, the power supply device 200 may receive an AC voltage (AC voltage) through the cord connection unit 220 .

The input AC voltage may be inputted to the first and second bridge diode units 233 and 234 , respectively, after noise is removed by the EMI filter unit 231 .

The first bridge diode unit 233 may rectify the input AC voltage into a first DC voltage having a predetermined magnitude. In the case of the initial connection, the switching unit 240 does not operate, and thus maintains an off state. Accordingly, the first DC voltage rectified by the first bridge diode unit 233 is not output to the outside.

The second bridge diode unit 234 may rectify the input AC voltage into a DC voltage and provide it to the standby power unit 223 . The standby power supply unit 270 may convert the input DC voltage into a second DC voltage having a predetermined size.

The standby power unit 270 generates a second DC voltage regardless of whether the switching unit 240 is on or off, and the second DC voltage is output by the device connection unit 210 through the cable 211, The voltage VSTB may be provided to the body 100 . Here, the main body 100 of the electronic device is in a standby mode in which the power circuit 150 is turned off.

In the electronic device in the standby mode, the main body 100 may receive the second DC voltage as the standby voltage VSTB by the power connector 110 . The second DC voltage received from the main body 100, that is, the standby voltage VSTB, is a part of the main board 11 through the operation control unit 160, for example, of the processor 140 operating in the standby mode. It may be supplied as a part or a sub-processor.

In the electronic device in the standby mode, the main body 100 may identify that the first external input signal is generated by the user's manipulation of the user input unit including the power button provided on the remote control.

Based on the generation of the first external input signal, the PS_ON signal may be generated as an operation signal for driving the power circuit 150 in the main board 11 . The operation signal (PS_ON signal) is output to the operation control unit 160 , and the operation control unit 160 operates, that is, to turn on the power circuit 150 based on the operation signal (PS_ON signal) being input. can be controlled

The operation signal (PS_ON signal) may be output to the power supply device 200 through the power connection unit 110 by the operation control unit 160 .

The operation signal (PS_ON signal) input from the main body 100 may be transmitted to the switching control unit 250 of the power supply device 200 through the device connection unit 210 . When receiving the operation signal, that is, the PS_ON signal, the switching control unit 250 may output a control signal for turning on the switching unit 240 . The switching unit 240 receives a control signal from the switching control unit 250 and is turned on, that is, is conductive.

As the switching unit 240 is turned on, that is, in a conductive state, the first DC voltage rectified by the first bridge diode unit 233 is output as the operating voltage BD_OUT through the switching unit 240 . It may be applied to the body 100 . Here, the first DC voltage output through the switching unit 240 is transmitted to the main body 100 through the device connection unit 210 .

Specifically, the AC voltage input through the cord connection unit 220 is noise removed by the EMI filter unit 231 and is converted to a first DC voltage rectified by the first bridge diode unit 233. 100) can be supplied.

The operating voltage BD_OUT transferred to the main body 100 , that is, the first DC voltage, may be input to the power circuit 150 . Here, since the power circuit 150 is in an ON state according to the control of the operation control unit 160 based on the operation signal, the first DC voltage is applied to each component of the main board 11 by the power circuit 150 . can be supplied to

Accordingly, the main body 100 is switched to the normal mode, and it is possible to perform a normal operation such as displaying an image on the display 120 .

Meanwhile, since the standby power unit 270 of the power supply device 200 is implemented to output the second DC voltage to the main body 100 of the electronic device regardless of whether the switching unit 240 is on or off, it operates in a normal mode. The standby voltage may be continuously applied to the main body 100 even in the electronic device.

While the electronic device normally performs an operation such as displaying an image in the normal mode, the main board 11 of the main body 100 generates a second external input signal, for example, by operating a power button provided on the remote control. can be identified as being

Based on the generation of the second external input signal while the electronic device operates in the normal mode, the PS_OFF signal may be generated as an operation stop signal for stopping the driving of the power circuit 150 in the main board 11 . The operation stop signal (PS_OFF signal) is output to the operation control unit 160 , and the operation control unit 160 stops the operation of the power circuit 150 based on the input of the operation stop signal (PS_OFF signal), that is, turns off. (OFF) can be controlled.

The operation stop signal (PS_OFF signal) may be output to the power supply device 200 by the operation control unit 160 .

The operation stop signal (PS_OFF signal) input from the main body 100 to the power supply device 200 is transmitted to the switching control unit 250, and the switching control unit 250 turns off the switching unit 240 as a control signal (OFF) signal) can be output. The switching unit 240 may be turned off by receiving a control signal from the switching unit.

When the switching unit 240 is turned off, the first DC voltage, that is, the operating power, is no longer output to the main body 100 of the electronic device, and a low-level standby voltage (VSTB) generated by the standby power unit 270 . , that is, the second DC voltage is continuously applied to the main body 100 .

Accordingly, the electronic device is switched to the standby mode, and the received second DC voltage, that is, the standby voltage VSTB, is configured in a part of the main board 11 through the operation control unit 160, for example, in the standby mode. It may be supplied as a part or sub-processor of the operating processor 140 .

8 is a diagram illustrating a structure for supplying power from a power supply device to a main body of an electronic device according to a third embodiment of the present invention.

The power supply device 200 of the third embodiment shown in FIG. 8 is compared with the power supply device 200 of the first embodiment shown in FIG. 6 and the power supply device 200 of the second embodiment shown in FIG. 7 . Thus, it further includes a load sensing unit 280, which is characterized. Accordingly, since components other than the load sensing unit 280 perform the same operations as those described with reference to FIGS. 6 and 7 , a redundant description may be omitted.

In FIG. 8, as in the embodiment of FIG. 7, the rectifying unit 230 is shown in a form including a plurality of bridge diode units, that is, a first bridge diode unit 233 and a second bridge diode unit 234, The implementation form of the rectifying unit 230 in the third embodiment is not limited to the form shown in FIG. 8 , and for example, a main power part and a standby power part by one bridge diode part 232 as shown in FIG. 6 . The case in which the rectified DC voltage is output is also included in the third embodiment.

In the electronic device of the third embodiment, as shown in FIG. 8 , the main body 100 and the power supply device 200 may be interconnected through a cable 211 including four signal lines.

Specifically, in the cable 211 of the power supply device 200 according to the third embodiment, a PS_ON signal line for transmitting an operation signal is not separately provided. In addition, the power connection unit 110 and the device connection unit 210 may be implemented to have four pins corresponding to the signal lines of the cable 211 .

In the third embodiment in which the number of signal lines of the cable 211 is relatively small, as compared to the first and second embodiments, the thickness of the cable 211 becomes thinner as the number of signal lines decreases, It can reduce the risk of causing visual discomfort to users.

As shown in FIG. 8 , the load sensing unit 280 is connected to the standby power supply unit 200 , and may output a signal to the switching control unit 250 .

In one embodiment, the load sensing unit 280, as shown in FIG. 8, detects the load size of the main body 100 through a VSTB line connected in series, and based on the sensed load size, the switching control unit 250 By outputting a signal to , the switching unit 240 may be operated.

When the power supply 200 is not connected to the main body 100, since no current flows to the load through the VSTB line, a signal is not output to the switching control unit 250, and accordingly the switching unit 240 operates Keep the off state that does not do it.

When the power supply device 200 is connected to the main body 100 through the device connection unit 210 , the second DC voltage generated by the standby power supply unit 270 is converted into a standby voltage (VSTB) into the main body through the device connection unit 210 . is passed to (100).

The main body 100 of the electronic device receives the second DC voltage as a standby voltage VSTB by the power connection unit 110 , and the received second DC voltage, that is, the standby voltage VSTB, operates the operation control unit 160 . may be supplied to the main board 11 through the

When standby power is consumed by the main board 11 , the load sensing unit 280 can detect that current flows through the load.

When the load is sensed in this way, the load sensing unit 280 outputs a signal to the switching control unit 250 , and the switching control unit 250 may conduct the switching unit 240 , ie, turn it on.

Accordingly, the power supply device 200 is in a state capable of supplying the first DC voltage rectified by the rectifying unit 230 to the main body 100 of the electronic device through the switching unit 250 .

However, since the electronic device is operating in the standby mode, the power circuit 150 of the main body 100 does not operate in an off state.

Thereafter, in the electronic device in the standby mode, when the main board 11 identifies that the first external input signal is generated, an operation signal for driving the power circuit 150 in the main board 11 (or As an operation start signal), a PS_ON signal may be generated. The operation signal (PS_ON signal) is output to the operation control unit 160 , and the operation control unit 160 operates, that is, to turn on the power circuit 150 based on the operation signal (PS_ON signal) being input. can be controlled

Accordingly, the first DC voltage rectified by the rectifying unit 230 may be applied to the main body 100 of the electronic device as operating power through the switching unit 240 .

In an embodiment, as shown in FIG. 8 , a dummy load 180 operable in association with an operation signal (PS_ON signal) may be provided in the main body 100 .

When the electronic device is switched from the standby mode to the normal mode, as standby power is no longer consumed by the main body 100 , there is a possibility that the load sensing unit 280 may mistakenly recognize that there is no load.

In one embodiment of the present invention, the dummy load 180 of the main body 100 operates in response to the operation signal (PS_ON signal), and the current flowing through the VSTB line is continuously maintained, so that the load sensing unit 270 is It is possible to prevent malfunction.

9 is a view showing an example of a load sensing unit in the power supply device according to the third embodiment of the present invention.

In an embodiment, the load sensing unit 280 includes a diode 281 and a voltage sensing unit 282 capable of detecting that a voltage is applied to the diode 281 as shown in FIG. 9 . can be implemented as When the load sensing unit 280 includes the diode 281 , it may be easy to detect a low standby load.

As shown in FIG. 8 , when a current flows by the standby load, a forward voltage is applied to the diode 281 and detected by the voltage sensing unit 282, whereby the load sensing unit 280 is It becomes possible to identify the presence or absence of a load.

However, in the present invention, the implementation form of the load sensing unit 280 is not limited to that shown in FIG. 9 , and may be implemented in a form including, for example, a resistor.

On the other hand, since an electronic device such as a TV consumes different power depending on the resolution, size, luminance, etc. of the display 120 , the power supply device outputs more power than allowed by the power supply device 200 to the main body 100 . (200) temperature rise is unavoidable, and may cause product defects according to product liability (PL).

In order to prevent this, in an embodiment of the present invention in which the configuration for supplying power to the electronic device is implemented in a form separated into the power circuit 150 and the power supply device 200 of the body 100, the power of the body 100 It is identified whether the power output range (hereinafter, also referred to as an output range or power range) between the power circuit 150 and the power supply device 200 provided on the board 13 matches, and based on the identification result, the power supply operation is performed. can be made to be performed.

In an embodiment, the power output range matching operation may be performed using the standby voltage VSTB provided from the power supply device 200 to the main body 100 . Here, the matching of the power output range may be performed by the operation control unit 160 of the main body 100 .

10 is a flowchart illustrating an operation of matching a power output range according to an embodiment of the present invention.

10 , the output range matching operation may be performed while the electronic device is in the standby mode when the power supply device 200 is initially connected. However, in the present invention, the timing at which the output range matching operation is performed is not limited, and in some cases, it may be performed while the electronic device is in the normal mode. That is, in the power supply device 200 according to an embodiment of the present invention, the standby voltage unit 270 provides a standby voltage to the main body 100 even when the electronic device operates in the normal mode, as described above. Since it is implemented, the matching operation using the standby voltage can be performed.

As shown in FIG. 10 , the operation control unit 160 controls the level, that is, the magnitude of, the standby voltage received from the power supply device 200 according to the mutual coupling of the power connection unit 110 and the device connection unit 210 . It can be identified (410).

The operation controller 160 may identify the power output range of the power supply device 200 based on the level of the standby voltage VSTB identified in step 410 ( 420 ).

The power supply device 200 may supply a standby voltage of a predetermined size to the main body 100 in response to the maximum power allowed to be supplied at the time of design.

Table 1 below shows an example of the magnitude of the output standby voltage corresponding to the maximum power value. As an example, the power supply device 200 designed as a maximum power of 450W may output a standby voltage of 9.5V to the main body 100 .

maximum power 150W 300W 450W 600W 750W 900W V _STB 8.5V 9V 9.5V 10V 11.5V 12V

The matching table in which the maximum power value corresponding to each level of the standby voltage is matched may be stored in advance in the storage unit of the main body 100 . The implementation form of the storage unit is not limited, and may be, for example, EEPROM.

Accordingly, the operation control unit 160, by using the maximum allowable power value of the power supply device 200 corresponding to the level of the standby voltage identified in step 410, to identify the power output range of the power supply device 200 be able to Here, a margin of a predetermined magnitude, for example, 0.2V, may be applied to each standby voltage. Referring to the case of Table 1, when the standby voltage is identified within the range of about 9.5V, for example, 9.3V to 9.7V, the output range of the power supply device 200 becomes a maximum of 450W.

The operation control unit 160 determines whether the power output range of the power supply device 200 identified in step 420 matches the power output range of the power board 13 of the main body 100 , that is, the power circuit 150 . can be identified (430). Here, the power range of the power circuit 150 may be stored in advance in a storage unit such as the aforementioned EEPROM.

When it is identified that the power range of the power supply device 200 and the power output range of the power circuit 150 match each other in step 430 (matching success), the operation control unit 160 controls the configuration of the main body 100, for example, , it is possible to control so that power is normally supplied to the main board 11 (440).

In an embodiment, when the electronic device is in the standby mode, the operation controller 160 may control the standby voltage to be supplied to the main board 11 . Thereafter, when the electronic device is switched to the normal mode, the operation control unit 160 may control the power circuit 150 to turn on so that the operation power is normally supplied to the main board 11 .

On the other hand, if it is identified that the power range of the power supply device 200 and the power range of the power circuit 150 do not match in step 430 (matching failure), the operation control unit 160 determines the configuration of the main body 100, for example For example, it is possible to control so that power is not supplied to the main board 11 ( 450 ).

In an embodiment, when the electronic device is in the standby mode, the operation controller 160 may control so that the standby voltage is not supplied to the main board 11 . Thereafter, even when the electronic device is switched to the normal mode, the operation control unit 160 may control the power circuit 150 to be turned off so that the operation power is not supplied to the main board 11 .

In another embodiment, when the electronic device is in the normal mode, the operation control unit 160 not only controls so that the standby voltage is not supplied to the main board 11, but also controls the power circuit 150 so that the power circuit 150 is immediately turned off, It can be prevented from being supplied to the main board 11 .

In addition, the operation control unit 160, based on the identification that the power range does not match in step 430, as shown in FIGS. 6 and 7, a signal indicating a matching failure, that is, a FAIL signal to the motherboard 11 ) can be output (460).

The processor 140 of the main board 11 may notify the user of the failure of matching the output range based on the signal received in step 460 ( 470 ).

Here, the method of notifying the user of the matching failure may be applied in various ways, for example, a message indicating the matching failure through the display 120, that is, outputting a UI, or blinking, beeping, or Matching failure may be fed back to the user by outputting a sound such as voice or the like. In one embodiment, the power for such a notification operation may be provided by a standby voltage.

In one embodiment of the present invention, when the power output ranges of the power supply device 200 and the power circuit 150 of the main body 100 are matched with each other through the output range matching operation, the configurations of the main body 100 By controlling the power to be supplied normally, it is possible to increase safety. In addition, since the EMI stage in the connected power supply 200 is designed to match the main body 100, it is more advantageous to optimize the EMI block.

On the other hand, in some cases, the operation control unit 160, even if the matching failure is identified in step 430, the power output range of the power supply device 200, that is, the maximum power is the output range of the power circuit 150 of the main body 100 In a higher case, considering that a sufficiently high power can be supplied from the power supply device 200 to the main body 100 , the operation control unit 160 does not output a FAIL signal and can control power to be transmitted normally. In this case, since the single power supply 200 can be used for a plurality of electronic devices having different power ranges, the versatility of the power supply 200 can be improved.

As described above, the embodiment of matching the power output range using the standby voltage VSTB may be difficult to apply to an electronic device designed to have a high minimum voltage for driving the main board. For example, assuming that the standby voltage must be maintained below 12V according to the standby power regulation, if the minimum driving voltage of the main board is 10V, the standby voltage corresponding to each allowable maximum power within 2V, as shown in Table 1, is need to be distinguished. Therefore, the margin, that is, the bandgap for each divided standby voltage is very small, so even if a slight fluctuation occurs in the magnitude of the identified standby voltage due to external factors, a misrecognition that is determined as a matching failure occurs. can be

Accordingly, as another embodiment, the output range matching operation may be performed using the adaptive signal generated by the main body 100 . The adaptive signal may be generated by the operation controller 160 as a signal having a voltage of a predetermined magnitude corresponding to the output range of the power circuit 150 . In addition, matching of the output range may be performed by the switching control unit 250 of the power supply device 200 .

11 is a diagram illustrating a structure in which a matching operation of a power output range is performed using an adaptive signal according to another embodiment of the present invention.

As shown in FIG. 11 , the operation control unit 160 has a predetermined power range of the power circuit 150 provided on the power board 13 of the main body 100 , that is, a voltage of a predetermined magnitude corresponding to the maximum power value. An adaptive signal having , that is, an adaptive PS_ON signal may be generated.

To this end, at least one resistor 161 having a predetermined resistance value corresponding to the maximum power of the power circuit 150 may be provided in the operation control unit 160 , as shown in FIG. 11 . In addition, the operation control unit 160 further includes an amplifier 162 capable of amplifying the signal generated through the resistor 161 so that the amplified signal is provided to the power supply 200 as an adaptive signal (Adaptive PS_ON signal). can do.

Table 2 below shows examples of the magnitude of the adaptive signal corresponding to the maximum power value. For example, in the case of the main body 100 designed with 400W as the maximum power, an adaptive signal having a voltage of 7V may be generated.

maximum power 100W 200W 300W 400W 500W 600W 700W 800W 900W Adaptive PS_ON 4V 5V 6V 7V 8V 9V 10V 11V 12V

As can be seen in Table 2, the adaptive signal (Adaptive PS_ON signal) has a large bandgap of the voltage divided by the maximum power value compared to the standby voltage in Table 1, so a large margin can be set for each voltage level. Therefore, even if the voltage level fluctuates due to external factors, the possibility of misrecognition is low.

The generated adaptive signal (Adaptive PS_ON signal) may be applied to the power supply device 200 . Here, the adaptive signal (Adaptive PS_ON signal) may be transmitted to the switching controller 250 of the power supply 200 through the PS_ON signal line of the cable 211 .

As shown in FIG. 11 , a switching device 251 implemented as a field effect transistor (FET) may be connected to the switching controller 250 . The switching element 251 may operate or be driven based on an adaptive PS_ON signal equal to or higher than a predetermined threshold voltage Vth being applied from the main body 100 . The threshold voltage Vth is set as, for example, 2 to 3V, and the switching device 251 operates, that is, turns on according to the application of an adaptive signal (Adaptive PS_ON signal) of 4V or more as shown in Table 2 .

12 is a flowchart illustrating an operation of matching a power output range according to another embodiment of the present invention.

In another embodiment of FIG. 12 , the output range matching operation may be performed when the main body 100 is switched from the standby mode to the normal mode according to the generation of the first external input signal.

12 , in the electronic device according to the embodiment of FIG. 11 , the operation control unit 160 of the main body 100 generates an adaptive signal (Adaptive PS_ON signal) based on the generation of the first external input signal. may (510).

Specifically, as described in the embodiments of FIGS. 6 and 7 , in response to the generation of the user input first external input signal, as shown in FIG. 11 , the main board 11 operates as the operation control unit 160 . A signal, that is, a PS_ON signal may be output.

The operation controller 160 may operate the power circuit 150 in response to the input of the PS_ON signal and generate an adaptive signal (Adaptive PS_ON signal). That is, in the embodiment of FIGS. 11 and 12 , the adaptive signal (Adaptive PS_ON signal) conducts the switching unit 240 of the power supply 200, like the PS_ON signal in FIGS. 6 and 7, in other words, It may serve as an operation signal to turn on.

The adaptive signal (Adaptive PS_ON signal) generated in step 510 may be transmitted to the switching controller 250 of the power supply 200 as shown in FIG. 11 ( 520 ).

When the input of the adaptive signal is identified, the switching control unit 250 may output a control signal to the switching unit 240 to conduct the switching unit 240 , ie, turn it on ( 530 ).

Here, as the switching control unit 250 receives the adaptive signal (Adaptive PS_ON signal) from the main body 100, the input signal increases from a low level (GND level) to a voltage of a predetermined level or more. , it can be identified that the first external input signal is generated in the main body 100 of the electronic device.

As the switching unit 240 is turned on according to the control signal output in step 530, as described in the embodiments of FIGS. 6 and 7, the first DC voltage rectified by the rectifying unit 230 is the operating voltage as the main body 100. can be supplied with

In the power supply device 200 according to the embodiment of FIG. 11 , the switching controller 250 , when an input of an adaptive signal (Adaptive PS_ON signal) is identified, the power supply of the main body 100 based on the voltage level of the adaptive signal An output range of the circuit 150 may be identified (540). Here, a predetermined level, for example, a margin of 0.4V may be applied to each voltage level of the adaptive signal (Adaptive PS_ON signal). Referring to the case of Table 2, when the voltage level of the adaptive signal (Adaptive PS_ON signal) is identified within the range of about 7V, for example, 6.6V to 7.4V, the power of the power supply circuit 150 of the main body 100 The output range can be identified as up to 400W.

The matching table in which the maximum power value corresponding to each voltage level of the adaptive signal is matched may be stored in advance in the storage unit of the power supply device 200 . The implementation form of the storage unit is not limited, and may be, for example, EEPROM.

The switching controller 250 may identify whether the power range of the power circuit 150 identified in step 540 matches the power range of the power supply device 200 ( 550 ). Here, the power output range of the power supply device 200 may be stored in advance in a storage unit such as the aforementioned EEPROM.

If it is identified that the power range of the power supply circuit 150 and the power range of the power supply device 200 match each other in step 550 (matching success), the switching control unit 250 controls the main body 100 from the power supply device 200 It can be controlled so that the power is normally supplied to the furnace ( 560 ). That is, the power supply device 200 may supply both the standby voltage and the operating voltage to the main body 100 of the electronic device switched to the normal mode according to the generation of the first external signal.

On the other hand, if it is identified that the power range of the power supply circuit 150 and the power range of the power supply device 200 do not match in step 550 (matching failure), the switching control unit 250 operates from the power supply device 200 to the main body ( 100), it is possible to control so that power is not supplied (570). Specifically, in the case of a matching failure, the switching control unit 250 outputs a control signal to turn off the switching unit 240 , so that the operating voltage is not supplied to the main body 100 of the electronic device.

In the power supply device 200 according to the embodiment of FIGS. 11 and 12 , when it is identified that the power range of the power circuit 150 and the power range of the power supply device 200 do not match in step 550, the switching control unit ( 250 may output a signal indicating a matching failure, that is, a FAIL signal to the main body 100 ( 580 ).

Specifically, as shown in FIG. 11, the switching control unit 250 applies the FAIL signal to the switching element 251, so that the adaptive signal (Adaptive PS_ON signal) is changed to a low-level FAIL signal, and the main body ( 100) can be output. Here, the FAIL signal may be transmitted through the PS_ON signal line of the cable 211 . The FAIL signal output to the main body 100 may be transmitted to the main board 11 through the operation control unit 160 as shown in FIG. 11 .

The processor 140 of the main board 11 may identify a matching failure of the output range based on the signal received in step 580, and notify the user thereof (590).

Here, the main board 11, the PS_ON signal output to the operation control unit 160 based on the generation of the first external input signal in step 510 and the adaptive signal (Adaptive PS_ON) received from the power supply 200 in step 580 signal), that is, by recognizing the level difference of the FAIL signal changed to the low level, matching failure can be identified.

In step 590, a method of notifying the user of the matching failure may be applied in various ways. For example, a message indicating the matching failure through the display 120, that is, outputting a UI, or blinking and beeping of a separately provided auxiliary LED Matching failure may be fed back to the user in a manner such as outputting a sound such as a sound or voice.

According to an embodiment, the method according to various embodiments disclosed in this document may be included and provided in a computer program product. Computer program products may be traded between sellers and buyers as commodities. The computer program product is distributed in the form of a device-readable storage medium (eg compact disc read only memory (CD-ROM)), or through an application store (eg Play Store™) or on two user devices (eg, It can be distributed online (eg download or upload), directly between smartphones (eg smartphones). In the case of online distribution, at least a portion of the computer program product (eg, a downloadable app) is stored at least on a machine-readable storage medium, such as a memory of a manufacturer's server, a server of an application store, or a relay server. It may be temporarily stored or temporarily created.

As mentioned above, although the present invention has been described in detail through preferred embodiments, the present invention is not limited thereto and may be practiced in various ways within the scope of the claims.

100: electronic device
110: power connector
120: display
150: power circuit
160: operation control unit
200: power supply
210: device connection unit
220: cord connection part
230: rectifying unit
240: switching unit
250: switching control unit
260: current sensing unit
270: standby power unit

Claims (20)

In an electronic device,
a main body provided with a functional unit including a display; and
A power supply capable of supplying power to the functional part of the main body,
The body is
a power connector to which the power supply can be connected; and
and a power circuit having a power factor compensating unit capable of compensating for a power factor of power input from the power supply connected through the power connection unit,
The power supply is
a cord connection unit capable of receiving an AC voltage;
a rectifying unit rectifying the AC voltage input through the cord connection unit into a DC voltage;
a switching unit connected to the rectifying unit; and
and a switching control unit for turning on or off the switching unit so that the rectified DC voltage is selectively supplied to the power circuit through the power connection unit. According to claim 1,
The power supply is
It further includes; a device connection unit that can be coupled to the power connection unit,
The power connection part and the device connection part are slim connectors. According to claim 1,
The power supply is
The electronic device further comprising a; standby power supply unit for converting the first DC voltage rectified by the rectifying unit into a second DC voltage of a low level. 4. The method of claim 3,
The rectifying unit,
a first bridge diode unit capable of rectifying the input AC voltage and outputting it to the switching unit; and
and a second bridge diode unit capable of rectifying the input AC voltage and outputting it to the standby power unit. 4. The method of claim 3,
The electronic device further comprising an operation control unit to turn on or off the operation of the power circuit based on the generation of an external input signal. 6. The method of claim 5,
The operation control unit,
Based on the generation of the external input signal, an operation signal is output to the switching control unit of the power supply device through the power connection unit,
The switching control unit,
An electronic device that turns on the switching unit in an off state based on the reception of the operation signal. 6. The method of claim 5,
The operation control unit,
based on the magnitude of the second DC voltage, identify an output range of the power supply;
Identifies whether the identified output range of the power supply device and the output range of the power circuit match,
An electronic device that turns on or off the operation of the power circuit based on the identification result of the matching. 8. The method of claim 7,
and a processor configured to notify a user of a matching failure based on the identification that the output range of the power supply device and the output range of the power circuit do not match. 6. The method of claim 5,
The operation control unit,
based on the generation of the external input signal, generating an adaptive signal having a predetermined voltage corresponding to an output range of the power circuit;
An electronic device for outputting the generated adaptive signal to the switching control unit of the power supply device through the power connection unit. 10. The method of claim 9,
The switching control unit,
based on the voltage level of the adaptive signal, identify an output range of the power circuit;
Identifies whether the identified output range of the power circuit and the output range of the power supply match,
An electronic device that turns on or off the switching unit based on an identification result of the matching. 11. The method of claim 10,
The switching control unit,
An electronic device for outputting a signal indicating a matching failure through the power connection unit based on it being identified that the output range of the power supply device and the output range of the power circuit do not match. 12. The method of claim 11,
The electronic device further comprising a processor configured to notify a user of a matching failure based on the identification that the output range of the power supply and the output range of the power circuit do not match using the signal received through the power connection unit . According to claim 1,
The power supply is
The electronic device further comprising a current sensing unit capable of outputting a signal to the switching control unit based on sensing the overcurrent. According to claim 1,
The power supply is
a standby power supply unit converting the first DC voltage rectified by the rectifying unit into a second DC voltage having a low level; and
and a load sensing unit connected to the standby power unit and outputting a signal to the switching control unit based on sensing that current flows through the load. According to claim 1,
The switching unit includes an electronic device including a relay switch. In the power supply device,
a device connection unit to which a main body of an electronic device provided with a functional unit including a display can be connected;
a cord connection unit capable of receiving an AC voltage;
a rectifying unit rectifying the AC voltage input through the cord connection unit into a first DC voltage;
a switching unit connected to the rectifying unit and configured to supply the first DC voltage to the main body of the electronic device through the device connecting unit when turned on;
a switching control unit for turning on or off the switching unit so that the rectified first DC voltage is selectively supplied to the main body of the electronic device through the device connection unit; and
and a standby power supply unit configured to convert the first DC voltage into a second DC voltage of a low level and supply the second DC voltage to a functional unit of the main body of the electronic device through the device connection unit. 17. The method of claim 16,
The rectifying unit,
a first bridge diode unit capable of rectifying the input AC voltage and outputting it to the switching unit; and
and a second bridge diode unit capable of rectifying the input AC voltage and outputting it to the standby power unit. 17. The method of claim 16,
The power supply device further comprising a current sensing unit capable of outputting a signal to the switching control unit based on the sensing of the overcurrent. 17. The method of claim 16,
The power supply device further comprising a load sensing unit connected to the standby power supply unit and outputting a signal to the switching control unit based on sensing that current flows through the load. 17. The method of claim 16,
The switching unit is a power supply including a relay switch.

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