Image display device

Abstract

An image display device is disclosed. An image display device according to an embodiment of the present disclosure includes a camera, a display, a memory configured to store facial images of a registered user, and a signal processing device configured to enter a monitoring mode in response to changes in images captured by the camera exceeding a predetermined value during operation. The signal processing device is configured to determine a theft situation and issue an alarm or transmit the images captured by the camera to the outside in response to a facial image in images captured by the camera not matching a facial image stored in the memory during the monitoring mode operation. Accordingly, a theft situation can be accurately detected in real time.

Description

Background 1. Area of ​​Revelation

[0001] The present disclosure relates to an image display device, and more particularly to an image display device capable of accurately detecting theft in real time. 2. Description of the state of the art

[0002] An image display device is a device equipped with a function for providing videos that a user can view. The user can view various video content through the image display device.

[0003] For example, if the image display device is a portable image display device, the user may use the image display device in public places. In such a case, the image display device becomes vulnerable to theft if the user temporarily leaves the image display device unattended.

[0004] Korean Patent Publication No. 10-2017-0054028 (hereinafter referred to as "Prior Art"), which relates to an operating method for an image display device, particularly a laptop computer, discloses an image display device that enters a theft monitoring mode to detect and respond to a theft situation.

[0005] However, since theft detection is based on keyboard and mouse inputs according to the state of the art, the laptop computer may cause the problem that it may incorrectly detect a theft situation if the registered user operates the laptop computer without using the keyboard or mouse. Summary

[0006] An object of the present disclosure is to provide an image display device that can accurately detect a theft situation in real time.

[0007] Another object of the present disclosure is to provide an image display device that can improve the probability of recovery in theft situations.

[0008] Another object of the present disclosure is to provide an image display device that can minimize exposure of personal information in theft situations.

[0009] To achieve the above-mentioned objectives, an image display device according to an embodiment of the present disclosure includes a camera, a display, a memory configured to store facial images of a registered user, and a signal processing device configured to enter a monitoring mode in response to changes in images captured by the camera exceeding a predetermined value during operation, wherein the signal processing device is configured to determine a theft situation and issue an alarm or transmit the images captured by the camera to the outside in response to a facial image in images captured by the camera not matching a facial image stored in the memory during the monitoring mode operation.

[0010] Meanwhile, the signal processing device may be configured to operate in a normal mode in response to the facial image captured by the camera matching the facial image stored in the memory during operation, and the signal processing device may be configured to switch to the monitoring mode in response to the facial image captured by the camera not matching the facial image stored in the memory for a predetermined period of time.

[0011] Meanwhile, the image display device according to an embodiment of the present disclosure may further comprise an input device including a power button and a character button, wherein the signal processing device may be configured to determine a theft situation and issue an alarm or transmit the image captured by the camera to the outside in response to the face image in the image captured by the camera not matching the face image stored in the memory and no input from the power button or the character button is detected for a predetermined period of time during operation in the monitoring mode.

[0012] Meanwhile, the signal processing device may be configured to lock the screen of the display and prevent the power saving mode from changing to an off mode or a power saving mode in response to the theft situation being detected.

[0013] Meanwhile, the signal processing device may be configured not to turn off the power when a power-off input is applied via a power button, or to restart after turning off, in response to the theft situation being detected.

[0014] Meanwhile, the signal processing device may be configured to lock BIOS data or personal information data stored in the memory in response to the theft situation being detected.

[0015] Meanwhile, according to an embodiment of the present disclosure, the image display device may further comprise a network interface configured to perform wireless communication with a neighboring access point device, wherein the signal processing device may be configured to establish a wireless connection with the access point device in response to detecting the theft situation and to send the image captured by the camera to a registered mobile terminal or a server.

[0016] Meanwhile, the signal processing device may be configured to activate only a part of internal devices during a power saving mode operation and perform monitoring based on the activated part of the internal devices, and may be configured to activate further internal devices and issue the alarm or send images taken by the camera to the outside in response to the monitoring result indicating a theft situation.

[0017] Meanwhile, the image display device according to an embodiment of the present disclosure may further include a network interface configured to perform wireless communication with a neighboring access point device and an audio output device configured to output a sound, wherein the signal processing device is configured to activate the camera during the power saving mode operation, determine the theft situation in response to the facial image captured by the camera not matching the facial image stored in the memory, activate the network interface and the audio output device, and output an alarm via the audio output device or send images captured with the camera to the outside via the network interface.

[0018] Meanwhile, the signal processing device may be configured to issue an alarm and store an alarm mode flag in memory in response to detecting a forced shutdown input during monitor mode operation.

[0019] Meanwhile, the image display device according to an embodiment of the present disclosure may further include a power supply configured to output a direct current, an input device configured to output a power-on signal or a power-off signal based on the operation of a power button, and a controller configured to enter a power-saving mode or a standby mode, and controls that a DC / DC converter within the power supply is turned off in response to receiving the power-off signal or inputting a power-saving or standby mode signal, and that the DC / DC converter within the power supply is turned on in response to receiving the power-on signal.

[0020] Meanwhile, the controller may be configured to turn off the power supply in response to receiving the power-off signal or inputting the power-saving or standby mode signal, and to turn on the power supply in response to receiving the power-on signal, wherein the power supply may be configured to perform DC-DC conversion based on the power-on signal and supply the converted DC power to each device within the image display device.

[0021] Meanwhile, the power supply may include a battery configured to store a direct current input from an external source, the DC / DC converter configured to convert the direct current input from the external source or to convert the direct current stored in the battery and output the converted direct current, and a second DC / DC converter configured to adjust the level of the direct current converted by the DC / DC converter and output the adjusted direct current.

[0022] Meanwhile, according to an embodiment of the present disclosure, the image display device may further comprise a power management controller configured to receive a power-on signal from the signal processing device, wherein the power management controller is configured to output a control signal to the second DC / DC converter within the power supply in response to receiving the power-on signal.

[0023] An image display device according to another embodiment of the present disclosure includes a camera, a display, a memory configured to store facial images of a registered user, and a signal processing device configured to activate only a portion of internal devices during a power saving mode operation and to perform monitoring based on the portion of the internal devices, wherein the signal processing device is configured to activate further internal devices among the internal devices and issue an alarm or send images captured by the camera to the outside in response to the monitoring result indicating a theft situation.

[0024] Meanwhile, an image display device according to another embodiment of the present disclosure may further include a network interface configured to perform wireless communication with a neighboring access point device and an audio output device configured to output a sound, wherein the signal processing device may be configured to, during power saving mode operation, activate the camera, determine the theft situation in response to the facial image captured by the camera not matching the facial image stored in the memory, activate the network interface and the audio output device, and output an alarm via the audio output device, or send images captured by the camera to the outside via the network interface.

[0025] Meanwhile, the signal processing device may be configured to issue an alarm and store an alarm mode flag in memory in response to detecting a forced shutdown during monitor mode operation. Effects of revelation

[0026] An image display device according to an embodiment of the present disclosure includes a camera, a display, a memory configured to store facial images of a registered user; and a signal processing device configured to enter a monitoring mode in response to changes in images captured by the camera exceeding a predetermined value during operation. The signal processing device is configured to determine a theft situation and issue an alarm or transmit the images captured by the camera to the outside in response to a facial image in images captured by the camera not matching a facial image stored in the memory during the monitoring mode operation. Accordingly, a theft situation can be accurately detected in real time.In addition, the probability of recovery in theft situations can be improved.

[0027] Meanwhile, the signal processing device may be configured to operate in a normal mode in response to the facial image captured by the camera matching the facial image stored in the memory during operation, and may be configured to switch to the monitoring mode in response to the facial image captured by the camera not matching the facial image stored in the memory for a predetermined period of time. Accordingly, a theft situation can be accurately detected in real time.

[0028] Meanwhile, the image display device according to an embodiment of the present disclosure may further include an input device including a power button and a character button, wherein the signal processing device may be configured to determine a theft situation and issue an alarm or transmit the image captured by the camera to the outside in response to the face image in the image captured by the camera not matching the face image stored in the memory and no input from the power button or the character button is detected for a predetermined period of time during operation in the monitoring mode. Accordingly, a theft situation can be accurately detected in real time. Furthermore, the probability of recovery in theft situations can be improved.

[0029] Meanwhile, the signal processing device may be configured to lock the display screen in response to detecting the theft situation and prevent the power saving mode from switching to an off mode or a power saving mode. Accordingly, the exposure of personal information in theft situations can be minimized.

[0030] Meanwhile, the signal processing device may be configured not to turn off the power when a power-off input is applied via a power button, or to restart after turning off, in response to the theft situation being detected.

[0031] Meanwhile, the signal processing device may be configured to lock BIOS data or personal information stored in memory in response to the detection of the theft. Accordingly, the exposure of personal data in theft situations can be minimized.

[0032] Meanwhile, according to an embodiment of the present disclosure, the image display device may further comprise a network interface configured to perform wireless communication with a neighboring access point device, wherein the signal processing device may be configured to establish a wireless connection with the access point device in response to the theft situation being detected and to send the image captured by the camera to a registered mobile terminal or a server. Accordingly, the probability of recovery in theft situations can be improved.

[0033] Meanwhile, the signal processing device may be configured to activate only a portion of internal devices during power-saving mode operation and perform monitoring based on the activated portion of the internal devices. In response to the monitoring result indicating a theft situation, the signal processing device may be configured to activate additional internal devices and issue the alarm or transmit images captured by the camera to the outside. Accordingly, a theft situation can be accurately detected in real time. Furthermore, the probability of recovery in theft situations can be improved.

[0034] Meanwhile, the image display device according to an embodiment of the present disclosure may further include a network interface configured to perform wireless communication with a neighboring access point device and an audio output device configured to output a sound, wherein the signal processing device is configured to activate the camera during power saving mode operation, determine the theft situation in response to the facial image captured by the camera not matching the facial image stored in the memory, activate the network interface and the audio output device, and output an alarm via the audio output device or transmit images captured with the camera to the outside via the network interface. Accordingly, a theft situation can be accurately detected in real time.In addition, the probability of recovery in theft situations can be improved.

[0035] Meanwhile, the signal processing device may be configured to issue an alarm and store an alarm mode flag in memory in response to detecting a forced shutdown input during monitor mode operation. Accordingly, the probability of recovery in theft situations may be improved.

[0036] Meanwhile, the image display device according to an embodiment of the present disclosure may further include a power supply configured to output a direct current, an input device configured to output a power-on signal or a power-off signal based on the operation of a power button, and a controller configured to enter a power-saving mode or a standby mode, and controls that a DC / DC converter within the power supply is turned off in response to receiving the power-off signal or inputting a power-saving or standby mode signal, and that the DC / DC converter within the power supply is turned on in response to receiving the power-on signal. Accordingly, power consumption in the standby mode can be reduced.

[0037] Meanwhile, the controller may be configured to turn off the power supply in response to receiving the power-off signal or inputting the power-saving or standby mode signal, and to turn on the power supply in response to receiving the power-on signal. The power supply may be configured to perform DC-DC conversion based on the power-on signal and supply the converted DC power to each device within the image display device. Accordingly, power consumption in standby mode can be reduced.

[0038] Meanwhile, the power supply may include a battery configured to store a direct current input from an external source, a DC / DC converter configured to convert the direct current input from the external source or to convert the direct current stored in the battery and output the converted direct current, and a second DC / DC converter configured to adjust the level of the direct current converted by the DC / DC converter and output the adjusted direct current. Accordingly, power consumption in standby mode can be reduced.

[0039] Meanwhile, according to an embodiment of the present disclosure, the image display device may further include a power management controller configured to receive a power-on signal from the signal processing device. The power management controller may be configured to output a control signal to the second DC / DC converter within the power supply in response to receiving the power-on signal. Accordingly, power consumption in standby mode can be reduced.

[0040] An image display device according to another embodiment of the present disclosure includes a camera, a display, a memory configured to store facial images of a registered user, and a signal processing device configured to activate only a portion of internal devices during a power-saving mode operation and perform monitoring based on the portion of the internal devices. The signal processing device is configured to activate further internal devices among the internal devices and output an alarm or transmit images captured by the camera to the outside in response to the monitoring result indicating a theft situation. Accordingly, a theft situation can be accurately detected in real time. Furthermore, the probability of recovery in theft situations can be improved.

[0041] Meanwhile, an image display device according to another embodiment of the present disclosure may further include a network interface configured to perform wireless communication with a neighboring access point device and an audio output device configured to output a sound. The signal processing device may be configured to, during power saving mode operation, activate the camera, determine the theft situation in response to the facial image captured by the camera not matching the facial image stored in the memory, activate the network interface and the audio output device, and output an alarm via the audio output device or transmit images captured by the camera to the outside via the network interface. Accordingly, a theft situation can be accurately detected in real time.In addition, the probability of recovery in theft situations can be improved.

[0042] Meanwhile, the signal processing device may be configured to issue an alarm in response to detecting a forced shutdown during monitoring mode operation and store an alarm mode flag in memory. Accordingly, a theft situation can be accurately detected in real time. Furthermore, the probability of recovery in theft situations can be improved. Short description of the drawings Fig. 1 is an example of an image display device according to an embodiment of the present disclosure. Fig. 2 is an example of an internal block diagram of the image display device of Fig. 1. Fig. 3 is an example of an internal block diagram of a signal processing device of Fig. 2. Fig. 4 is a diagram to which reference is made to show an example of operation of the controller and power supply from Fig. 2 to describe. Fig. 5 is a flowchart illustrating an example of an operation method of an image display device according to an embodiment of the present disclosure. Fig. 6A to 6C are drawings to which reference is made to explain the operating procedure of Fig. 5 to describe. Fig. 7 is a flowchart illustrating another example of an operation method of an image display device according to an embodiment of the present disclosure. Fig. 8a to 8d are drawings to which reference is made to explain the operating procedure of Fig. 7 to describe. Fig. 9 is a flowchart showing another example of an operation method of an image display device according to an embodiment of the present disclosure. Fig. 10A to 8C are drawings to which reference is made to explain the operating procedure of Fig. 9 to describe. Fig. 11 is a flowchart showing another example of an operation method of an image display device according to an embodiment of the present disclosure. Detailed description of the preferred embodiments

[0043] Hereinafter, the present disclosure will be described in detail with reference to the accompanying drawings.

[0044] With respect to the components used in the following description, the suffixes "module" and "unit" are provided solely for the convenience of preparing the description and do not have or serve any different meanings. Accordingly, the suffixes "module" and "unit" can be used interchangeably.

[0045] An image display device according to an embodiment of the present disclosure may refer to the concept that includes laptop computers, desktop computers, televisions, and vehicle displays. Furthermore, the image display device according to an embodiment of the present disclosure may refer to the concept that includes mobile devices such as mobile phones, tablets, smartwatches, and smartglasses.

[0046] Fig. 1 is an example of an image display device according to an embodiment of the present disclosure.

[0047] Referring to the figure, the image display device 100 according to an embodiment of the present disclosure may be a laptop computer.

[0048] The laptop computer may be equipped with a display 180, character keys 150a and a power key 101.

[0049] The character key 150a and the power key 101 are examples of input devices that may be part of the input device 120 to be described later.

[0050] The laptop computer 100 can be used as a portable image display device in public places and is vulnerable to theft when the user temporarily leaves his or her seat.

[0051] The present disclosure proposes a method to accurately detect theft in real time and improve the probability of recovery in theft situations.

[0052] For this purpose, an image display device 100 according to an embodiment of the present disclosure comprises a camera 195, a display 180, a memory configured to store facial images of a registered user (140 of Fig. 2) and a signal processing device (170 of Fig. 2) configured to switch to a surveillance mode when changes in images captured by the camera 195 during operation exceed a predetermined value, wherein the signal processing device 170 detects a theft situation and is configured to issue an alarm or transmit the images captured by the camera 195 to the outside if a facial image in images captured by the camera 195 does not match a facial image stored in the memory 140 during the surveillance mode operation. Accordingly, a theft situation can be accurately detected in real time. Furthermore, the probability of recovery in theft situations can be improved. The above is explained with reference to Fig. 5 and subsequent figures.

[0053] The internal operation of the image display device 100, for example the laptop computer, is described by Fig. 2 and the following figures are described in more detail.

[0054] Fig. 2 is an example of an internal block diagram of the image display device of Fig. 1.

[0055] With reference to Fig. 2, an image display device 100 according to an embodiment of the present disclosure includes an input device 120, an external device interface 130, a memory 140, a signal processing device 170, a display 180, an audio output device 185, a camera 195, a controller 270, a power supply 190, and a graphics processor 340.

[0056] The input device 120 may be equipped with various keys such as the power key 101 and the character key 150a and supply signals generated by the keys to the signal processing device 170.

[0057] The external device interface 130 may provide an interface to connected external devices (not shown) such as USB devices or external devices connected via an HDMI port.

[0058] For example, the external device interface 130 may be wired or wirelessly connected to external devices such as a digital versatile disk (DVD), a Blu-ray device, a game console, a camera, a camcorder, or a set-top box, and may be configured to perform input / output operations with the external devices.

[0059] The network interface 135 provides an interface for connecting the image display device 100 to a wired / wireless network, including the Internet network. For example, the network interface 135 can receive content or data provided by the Internet, a content provider, or a network operator via the network.

[0060] Meanwhile, the network interface 135 may include a wireless communicator (not shown).

[0061] For example, the wireless communicator (not shown) within the network interface 135 may be configured to perform wireless communication with a neighboring access point device 700.

[0062] The memory 140 can store a program for each signal processing and control in the signal processing device 170 and can store signal-processed image, audio, or data signals.

[0063] In addition, the memory 140 may be used to temporarily store image, audio, or data signal inputs to the external device interface 130.

[0064] Meanwhile, the memory stores 140 facial images of a registered user.

[0065] Although Fig. While Figure 2 shows that memory 140 is provided separately from signal processing device 170, the scope of the present disclosure is not limited thereto. Memory 140 may be included in signal processing device 170.

[0066] The interface 150 can wirelessly transmit received user input signals to the signal processing device 170 or the controller 270.

[0067] For example, the interface 150 may receive wired or wireless user input signals generated by the operation of a remote control device 200, such as a wired or wireless mouse (not shown), and send the received user input signals to the signal processing device 170.

[0068] The controller 270 may be configured to enter a power saving mode or a standby mode when a power-off signal is received or a power saving or standby mode signal is input, to turn off a first DC / DC converter 430 within the power supply 190 when a power-on signal is received, and the controller 270 is configured to turn on the first DC / DC converter 430 within the power supply 190.

[0069] For example, in the power-saving or standby mode, only the controller 270 can operate in a power-saving or standby state, while other devices cannot operate at all. Accordingly, the power consumption of the image display device 100 during the power-saving or standby mode can be significantly reduced.

[0070] The power supply 190 can supply power to various devices within the image display device 100. The diagram shows that the audio output device 185, the signal processing device 170, the controller 270, and the display 180 are supplied with power, but other components such as the input device 120, the memory 140, the network interface 135, the external device interface 130, and the interface 150 can also be supplied with power.

[0071] The signal processing device 170 may be configured to perform signal processing for the overall operation of the image display device 100.

[0072] For example, the signal processing device 170 may execute various programs based on a predetermined operating system (OS).

[0073] In particular, the signal processing device 170 may process video or audio signals stored in the memory 140 or input from external sources and output the processed signals.

[0074] In addition, the signal processing device 170 can generate and output graphic images, such as on-screen display (OSD) images.

[0075] Meanwhile, the signal processing device 170 may be implemented in the form of a system on chip (SoC).

[0076] The display 180 can convert and display video signals, data signals, graphic image signals, control signals, and the like processed by the graphics processor 340 within the signal processing device 170.

[0077] The display 180 may be implemented using LCD, OLED, and flexible displays, and may also support three-dimensional (3D) displays.

[0078] Meanwhile, the display 180 may be configured as a touchscreen and used as an input device in addition to an output device.

[0079] The audio output device 185 can receive audio signals processed in the signal processing device 170 and output sounds.

[0080] The camera 195 may be arranged in the upper part of the display 180 to take pictures.

[0081] For example, the camera can capture 195 images containing the user's face. The camera can also capture 195 images containing another person's face.

[0082] Images captured by the camera 195 can be sent to the signal processing device 170.

[0083] Meanwhile, a block diagram of the image display device 100 shown in Fig. 2 is a block diagram for one embodiment of the present disclosure. Each component of the block diagram can be integrated, added, or omitted according to a description of the actually implemented image display device 100. That is, two or more components can be combined into a single component as needed, or a single component can be split into two or more components. The function performed in each block is described for the purpose of illustrating embodiments of the present disclosure, and specific operations and devices do not limit the scope of the present disclosure.

[0084] Fig. 3 is an example of an internal block diagram of the signal processing device of Fig. 2.

[0085] Referring to the figure, the signal processing device 170 according to an embodiment of the present disclosure may include a demultiplexer 310, an image processor 320, a processor 330, a graphics processor 340, a mixer 345, a frame rate converter 350, and a formatter 360. Furthermore, the signal processing device 170 may include an audio processor (not shown) and a data processor (not shown).

[0086] Demultiplexer 310 demultiplexes the input signal or data stream. For example, if an MPEG-2 TS signal is input, the input MPEG-2 TS signal is demultiplexed into video, audio, and data signals, respectively.

[0087] The image processor 320 may be configured to perform image processing on demultiplexed image signals. For this purpose, the image processor 320 may include an image decoder 325 and a scaler 335.

[0088] The image decoder 325 decodes a demultiplexed image signal, and the scaler 335 performs scaling so that the resolution of the decoded image signal can be output from the display 180.

[0089] The image decoder 325 may include a decoder of various standards. For example, a 3D image decoder for MPEG-2, an H.264 decoder, a color image and a depth image decoder, and a multi-view image decoder may be provided.

[0090] The processor 330 may control the overall operation within the image display device 100 or the signal processing device 170.

[0091] In addition, the processor 330 may control the image display device 100 using the user command input via the interface 150 or via an internal program.

[0092] In addition, the processor 330 may be configured to perform data transmission control with the network interface 135 or the external device interface 130.

[0093] Additionally, the processor 330 may control the operation of the demultiplexer 310, the image processor 320, and the graphics processor 340 within the signal processing device 170.

[0094] The graphics processor 340 generates a graphics image signal according to user input or autonomously.

[0095] In addition, the graphics processor 340 may generate a pointer that may be displayed on the display based on a pointing signal input from the remote control device 200.

[0096] Meanwhile, the graphics processor 340 may be configured to perform graphics processing on the image signal output from the signal processing device 170.

[0097] For example, the graphics processor 340 may be configured to perform graphics processing on the image signal output from the signal processing device 170 to add a predetermined graphic image.

[0098] Mixer 345 may combine the graphics image signals generated by graphics processor 340 with the decoded video signals processed by image processor 320. The mixed image signal is provided to frame rate converter 350.

[0099] The frame rate converter (FRC) 350 can convert the frame rate of an input image. At the same time, the frame rate converter 350 can also output the frame rate directly without requiring additional frame rate conversion.

[0100] Formatter 360 can convert the format of an input image signal and output the image signal in the converted format. For example, formatter 360 can convert a 2D image to a 3D image or convert the format of a 3D image.

[0101] Meanwhile, a block diagram of the Fig. 3 shows a block diagram for one embodiment of the present disclosure. Each component of the block diagram can be integrated, added, or omitted according to a specification of the actually implemented signal processing device 170.

[0102] In particular, the frame frequency converter 350 and the formatter 360 need not be provided in the signal processing device 170, but may be provided separately or integrated into a single module.

[0103] Fig. 4 is a diagram used to describe an example of the operation of the controller and power supply of Fig. 2 is used.

[0104] Referring to the figure, the image display device 100 according to an embodiment of the present disclosure may further include a power supply 190 that outputs direct current, an input device 120 that outputs a power-on signal PWR_ON or a power-off signal PWR_OFF based on the operation of a power button 101, and a controller 270 that enters a power-saving mode or a standby mode and controls a first DC / DC converter 430 within the power supply 190 to turn it off in response to receiving the power-off signal or inputting a power-saving or standby mode signal, and controls the first DC / DC converter 430 within the power supply 190 to turn it on in response to receiving the power-on signal. Accordingly, power consumption in the standby mode can be reduced.

[0105] The controller 270 can control the power supply 190 to turn off when the power-off signal PWR_OFF is received or the power-saving or standby mode signal is input, and can control the power supply 190 to turn on when the power-on signal PWR_ON is received. Accordingly, power consumption in standby mode can be reduced.

[0106] In particular, when the power-off signal PWR_OFF is received or the power-save or standby mode signal is received, the controller 270 can turn off the power supply, thereby reducing the power consumption in the power-save or standby mode.

[0107] Meanwhile, the power-saving or standby mode is deactivated by the PWR_ON power-on signal, which enables the operation of the DC / DC converter within the power supply.

[0108] However, the controller 270 may be implemented as an embedded controller.

[0109] The power supply 190 may be configured to perform DC conversion based on the power-on signal PWR_ON and supply the converted DC power to each device within the image display device 100.

[0110] The power supply 190 may include a battery 420 that stores DC power Vpower input from an external source, a first DC / DC converter 430 that converts the DC power Vpower input from the external source or the DC power Vpower stored in the battery 420 and outputs the converted DC power Vdc1, Vdc2, and a second DC / DC converter 440 that adjusts the level of the DC power converted by the first DC / DC converter 430 and outputs the adjusted DC power Vdca.

[0111] Meanwhile, the power supply 190 may refer to the concept that includes an external power supply 410.

[0112] The battery 420 can store DC power supplied by the power supply 410 when AC power is converted to DC power by the power supply 410 and the converted DC power is provided.

[0113] Meanwhile, the image display device 100 according to an embodiment of the present disclosure may further include a power management controller 275.

[0114] The power management controller 275 may be configured to output control signals S1, S2 to the second DC / DC converter 440 within the power supply 190 in response to receiving the power-on signal PWR_ON.

[0115] Meanwhile, the first DC / DC converter 430 may be configured to output DC power Vdcx to the power management controller 275 and may be configured to output a control signal Sa to the second DC / DC converter 440 upon receiving the power-on signal PWR_ON from the controller 270.

[0116] Meanwhile, in the power saving or standby mode, the power supply 190 may supply a standby current EC_Standby to the controller 270.

[0117] However, by disabling the output of DC power except for the standby current EC_Standby in the power saving or standby mode of the image display device 100, the power consumption in the power saving or standby mode can be reduced.

[0118] In the power saving or standby mode, the battery 420 in the power supply 190 may be configured to output the standby current EC_Standby while the first DC / DC converter 430 in the power supply 190 may be turned off.

[0119] Fig. 5 is a flowchart illustrating an example of an operation method of an image display device according to an embodiment of the present disclosure, and Fig. 6A to 6C are drawings to which reference is made to illustrate the operating procedure of Fig. 5 to describe.

[0120] Referring to the figure, the signal processing device 170 of the image display device 100 may be configured to store or register a facial image of a registered user captured by the camera 195 in the memory S510.

[0121] Next, the signal processing device 170 activates the camera 195 during operation S520.

[0122] For example, the signal processing device 170 may be configured to activate the camera 195 when a character key 150a is pressed.

[0123] In another example, the signal processing device 170 may be configured to activate the camera 195 when the image displayed on the display 180 varies rather than remaining constant.

[0124] In another example, the signal processing device 170 may be configured to activate the camera 195 when a sound is output via the audio output device 185 while the same image is displayed on the display 180 for a predetermined period of time.

[0125] The signal processing device 170 may receive the captured images sequentially from the camera 195 after the camera 195 is activated.

[0126] At this time, the signal processing device 170 can control the image capture frequency of the camera 195 to increase as the operation cycle of the character key 150a or the change cycle of the image displayed on the display 180 becomes longer. Accordingly, captured images can be captured more frequently as the operation input becomes slower.

[0127] Fig. Figure 6A shows a situation in which an image of the user USRa is taken after the camera 195 has been activated. As in Fig. 6A, after activation of the camera 195, an image capturing the face of the user USRa may be sent to the signal processing device 170.

[0128] Next, the signal processing device 170 may be configured to determine whether a change in the captured images is greater than or equal to a predetermined value S530 and, if so, to control the device to enter the monitoring mode S540.

[0129] For example, if a difference between a first image and a second image taken consecutively is greater than or equal to the predetermined value, the signal processing device 170 may be configured to switch to the monitoring mode.

[0130] In particular, the signal processing device 170 may be configured to detect that the user USRa has left his seat and to control the device to switch to the monitoring mode if the face of the user USRa, which is included in the first captured image, is not included or is only partially included in the second image taken after the first image.

[0131] Fig. 6B shows a situation in which the face of user USRa is not included in a captured image because user USRa left his seat after activating camera 195. Accordingly, signal processing device 170 may be configured to switch to monitoring mode.

[0132] Meanwhile, the signal processing device 170 may be configured to operate in a normal mode when the facial image captured by the camera 195 matches the facial image stored in the memory 140 during operation. On the other hand, if the captured facial image does not match the facial image stored in the memory 140 for a predetermined period of time during operation, the signal processing device 170 may be configured to switch to the monitoring mode. Accordingly, a theft situation can be accurately detected in real time.

[0133] Next, while operating in the monitoring mode, the signal processing device 170 may monitor internal devices S550.

[0134] Meanwhile, the signal processing device 170 may be configured to perform monitoring based on at least one of a power connection status, an opening / closing status of the display 180, an input status of the character key 150a, or a presence / absence of the user's face in the image captured by the camera 195.

[0135] For example, the signal processing device 170 may be configured to perform monitoring based on images captured by the camera 195 while operating in the monitoring mode after the user USRa has left his seat.

[0136] In another example, the signal processing device 170 may be configured to perform monitoring based on images captured by the camera 195 and the opening / closing status of the display 180 during operation in the monitoring mode after the user USRa leaves his seat.

[0137] In another example, the signal processing device 170 may be configured to perform monitoring based on images obtained by the camera 195 and the input status of the character key 150a during operation in the monitoring mode after the user USRa has left his seat.

[0138] The signal processing device 170 judges a theft situation based on the monitoring of internal devices S560; if the monitoring result indicates a theft situation, the signal processing device 170 is configured to issue an alarm or send captured images S570.

[0139] For example, the signal processing device 170 may be configured to detect a theft situation when the image captured by the camera 195 does not match the facial image stored in the memory 140, and to output an alarm through the audio output device 185 or to send images captured by the camera 195 to the outside through the network interface 135.

[0140] Fig. 6C shows an example in which an image Img containing the face of an outsider OTR is captured by the camera 195 in the surveillance mode.

[0141] The signal processing device 170 can be configured to detect a theft when the image containing the face of an outsider OTR does not match the facial image stored in the memory 140, and control the device to output an alarm Soa via the audio output device 185 or to transmit an image Img captured by the camera 195 to the outside via the network interface 135. Accordingly, a theft can be accurately detected in real time. Furthermore, the probability of recovery in theft situations can be improved.

[0142] An image Img captured by the camera 195 can be sent to an external mobile terminal 600 via a neighboring access point device 700.

[0143] For example, the signal processing device 170 or the network interface 135 may be configured to prioritize connection to an open access point device with the strongest wireless signal strength and without password protection when the image display device 100 is located in a public place.

[0144] Furthermore, upon detecting a theft situation, the signal processing device 170 may be configured to establish a wireless connection to the open access point device 700 and send images captured by the camera 195 to a registered mobile device 600 or a server. Accordingly, the probability of recovery in theft situations may be improved.

[0145] In another example, the signal processing device 170 may be configured to detect a theft situation and issue an alarm via the audio output device 185 or transmit an image captured by the camera 195 to the outside via the network interface 135 when the facial image in the image captured by the camera 195 does not match the facial image stored in the memory 140 and no input from the power key 101 or the character key 150a is detected for a predetermined period of time during operation in the monitoring mode. Accordingly, a theft situation can be accurately detected in real time. Furthermore, the probability of recovery in theft situations can be improved.

[0146] In another example, if the facial image in the image captured by the camera 195 does not match the facial image stored in the memory 140 and the display 180 is closed during operation in the monitoring mode, the signal processing device 170 may be configured to detect a theft and issue an alarm via the audio output device 185 or transmit an image captured by the camera 195 to the outside via the network interface 135. Accordingly, theft can be accurately detected in real time. Furthermore, the probability of recovery in theft situations can be improved.

[0147] In another example, when the facial image in the image captured by the camera 195 does not match the facial image stored in the memory 140 and the character key 150a or the power key 101 is pressed during operation in the monitoring mode, the signal processing device 170 may be configured to detect theft and issue an alarm via the audio output device 185 or transmit an image captured by the camera 195 to the outside via the network interface 135. Accordingly, theft can be accurately detected in real time. Furthermore, the probability of recovery in theft situations can be improved.

[0148] Meanwhile, upon detection of theft, the signal processing device 170 may be configured to lock the screen of the display 180 and prevent the power mode from switching to an off mode or a power-saving mode. Accordingly, the exposure of personal information in theft situations can be minimized.

[0149] Meanwhile, the signal processing device 170 may be configured not to turn off the power when a power-off command is input via the power button 101, or to restart after turning off, in response to a theft situation being detected.

[0150] Meanwhile, in response to the detection of the theft situation, the signal processing device 170 may be configured to lock BIOS data or personal information stored in the memory 140. Accordingly, the exposure of personal information in theft situations can be minimized.

[0151] Although Fig. 5 shows the transition from normal operation mode to monitoring mode, it is also possible to switch from power saving mode to monitoring mode. The transition is described with reference to Fig. 7 and subsequent figures.

[0152] Fig. 7 is a flowchart showing another example of an operation method of an image display device according to an embodiment of the present disclosure, and Fig. 8a to 8d are drawings to which reference is made for describing the operating procedures of Fig. 7 is referred to.

[0153] Referring to the figure, the signal processing device 170 executes the monitoring mode during the power saving mode operation S740.

[0154] For example, the signal processing device 170 may control the camera 195 to be activated during power saving mode operation and control the device to enter the monitoring mode when the change in the captured images when the camera 195 is activated exceeds a predetermined value.

[0155] For example, the signal processing device 170 may be configured to switch to the monitoring mode when a difference between a first image and a second image taken consecutively is greater than or equal to the predetermined value.

[0156] In particular, the signal processing device 170 may be configured to detect that the user USRa has left his seat and to control the device to switch to the monitoring mode if the face of the user USRa, which is included in the first captured image, is not included or is only partially included in the second image taken after the first image.

[0157] Fig. 8A shows a situation in which the face of the user USRa is not included in a captured image because the user USRa leaves his seat after activating the camera 195. Accordingly, the signal processing device 170 may be configured to switch to the monitoring mode.

[0158] Next, the signal processing device 170 may be configured to activate only a portion of the internal device during power saving mode operation and perform the monitoring based on the activated portion of the internal devices S750.

[0159] Next, the signal processing device 170 may judge a theft condition based on the monitoring result based on the part of the internal devices S760, and in response to the monitoring result indicating a theft situation, activate other internal devices S756 and issue an alarm or send images taken by the camera 195 to the outside S770.

[0160] Accordingly, a theft situation can be accurately detected in real time. Furthermore, the probability of recovery in theft situations can be improved.

[0161] For example, the signal processing device 170 or the controller 270 may be configured to activate only the input device 120 and the power supply 190 in the power saving mode, but to deactivate the camera 195, the display 180, the audio output device 185, the network interface 135, and the external device interface 130.

[0162] However, as in Fig. 8B, when an input is received from a predetermined key Ka, Kb, Kc among the character keys 150a during the power saving mode operation, the signal processing device 170 receives a signal from the activated input device 120 and controls the device to enter the monitoring mode based on the received signal.

[0163] During power saving mode operation, the signal processing device 170 may switch to monitoring mode and activate the camera 195.

[0164] As in Fig. As shown in Figure 8C, the signal processing device 170 may be configured to detect a theft when the facial image Img in an image captured by the camera 195 does not match the facial image stored in the memory 140 during power-saving mode operation. The signal processing device 170 may be configured to detect a theft, activate the network interface 135 and the audio output device 185, and output an alarm via the audio output device 185 or transmit the image Img captured by the camera 195 to the outside via the network interface 135. Accordingly, a theft can be accurately detected in real time. Furthermore, the probability of recovery in theft situations can be improved.

[0165] In another example, the signal processing device 170 or the controller 270 may be configured to enable only the camera 195, the input device 120, and the power supply 190 in the power saving mode, but to disable the display 180, the audio output device 185, the network interface 135, and the external device interface 130.

[0166] However, as in Fig. 8B, when an input is received from a predetermined key Ka, Kb, Kc among the character keys 150a during the power saving mode operation, the signal processing device 170 receives a signal from the activated input device 120 and controls the device to enter the monitoring mode based on the received signal.

[0167] As in Fig. As shown in Figure 8C, the signal processing device 170 may be configured to detect theft when the facial image Img in an image captured by the camera 195 does not match the facial image stored in the memory 140 during power-saving mode operation. The signal processing device 170 may be configured to detect theft, activate the network interface 135 and the audio output device 185, and output an alarm via the audio output device 185 or transmit the image Img captured by the camera 195 to the outside via the network interface 135. Accordingly, theft can be accurately detected in real time. Furthermore, the probability of recovery in theft situations can be improved.

[0168] Fig. 9 is a flowchart showing another example of an operation method of an image display device according to an embodiment of the present disclosure, and Fig. 10A to 8C are drawings to which reference is made to explain the operating procedure of Fig. 9 to describe.

[0169] Referring to the figure, the signal processing device 170 executes the monitoring mode S940.

[0170] For example, the signal processing device 170 may control the camera 195 to be activated during power saving mode operation and control the device to enter the monitoring mode when the change in the captured images exceeds a predetermined value while the camera 195 is activated.

[0171] For example, if a difference between a first image and a second image taken consecutively is greater than or equal to the predetermined value, the signal processing device 170 may be configured to switch to the monitoring mode.

[0172] Fig. 10A shows a situation in which the face of the user USRa is not included in a captured image because the user USRa has left his seat after activating the camera 195. Accordingly, the signal processing device 170 may be configured to switch to the monitoring mode.

[0173] Next, the signal processing device 170 determines whether a forced shutdown input is received during the monitor mode operation S945 and issues an alarm when the forced shutdown input is detected S970.

[0174] The signal processing device 170 may be configured to store an alarm mode flag in the memory 140 S980. Accordingly, the probability of recovery in theft situations may be improved.

[0175] Fig. 10B shows a case where the power button 101 is pressed for more than a predetermined period of time during the monitor mode operation.

[0176] When the power button 101 is pressed for more than a predetermined time in the normal mode and not in the monitoring mode, the power supply of the image display device 100 is turned off in response to the forced shutdown input.

[0177] If the power button 101 is pressed by an outsider OTR for more than a predetermined time during the monitoring mode operation, the signal processing device 170 or the controller 270 may control the image display device 100 not to execute the power-off or power-saving mode or to restart after power-off in order to prevent theft of the image display device 100 even in the presence of the forced shutdown input, as shown in Fig. 10B shown.

[0178] In particular, as in Fig. 10B, the signal processing device 170 or the controller 270 may be configured to detect theft and control the image display device 100 not to execute the power-off or power-saving mode or to restart after the device is turned off to prevent theft of the image display device 100 when the power button 101 is pressed by an outsider OTR for more than a predetermined period of time to prevent theft of the image display device 100.

[0179] In particular, upon detection of theft, the signal processing device 170 may be configured to display a notification screen on the display 180 after the device is turned off and to emit a warning tone during the restart until the operating system is loaded. Accordingly, the probability of recovery in theft situations may be improved.

[0180] As in Fig. As shown in Figure 10C, the signal processing device 170 may be further configured to issue an alarm Soa or transmit an image Img captured by the camera 195 to an external mobile terminal 600 via a neighboring access point device 700 when the power button 101 is pressed by an outsider OTR for longer than a predetermined period of time during monitoring mode operation. Accordingly, a theft situation can be accurately detected in real time. Furthermore, the probability of recovery in theft situations can be improved.

[0181] Fig. 11 is a flowchart showing another example of an operation method of an image display device according to an embodiment of the present disclosure.

[0182] Referring to the figure, the signal processing device 170 or the controller 270 receives a power state change event, such as power off S1110.

[0183] For example, if the power button 101 is pressed for more than a predetermined period of time during monitor mode operation, a forced shutdown input event is generated.

[0184] Next, the signal processing device 170 or the controller 270 determines whether the event indicates an alarm mode S1120 and is configured to turn on the system power supply if the event indicates the alarm mode S1150.

[0185] For example, if a forced shutdown input event occurs during monitor mode operation, the signal processing device 170 or the controller 270 may be configured to detect a theft situation and control the device to enter alarm mode and reboot the device to turn the system back on after the device has been turned off in accordance with the forced shutdown input.

[0186] Next, the signal processing device 170 may be configured to display an alarm screen on the BIOS startup screen and output an alarm sound S1155; then, the signal processing device 170 may boot the system S1170.

[0187] For example, the signal processing device 170 may be configured to display an alarm screen on the display 180 and output an alarm sound via the audio output device 185 until the operating system screen is displayed. Accordingly, the probability of recovery in theft situations may be improved.

[0188] Meanwhile, an image display device 100 according to another embodiment of the present disclosure includes a camera 195, a display 180, and a memory 140 for storing facial images of a registered user, and a signal processing device 170 that activates only a portion of the internal devices during a power-saving mode operation and performs monitoring based on the portion of the internal devices. The signal processing device 170 is configured to further activate other internal devices among the internal devices and issue an alarm or externally transmit images captured by the camera 195 in response to the monitoring result indicating a theft situation. Accordingly, a theft situation can be accurately detected in real time. Furthermore, the probability of recovery in theft situations can be improved.

[0189] Although the present disclosure has been particularly shown and described with reference to exemplary embodiments thereof, the present disclosure is not limited to the specific embodiments described above. It is obvious that those skilled in the art to which the present disclosure relates may make various modifications without departing from the gist of the present disclosure as claimed, and such modified embodiments should not be individually understood from the technical spirit or perspective of the present disclosure. QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] KR 10-2017-0054028

[0004]

Claims

[1] Image display device comprising: a camera; an advertisement; a memory configured to store facial images of a registered user; and a signal processing device configured to switch to a monitoring mode in response to changes in images captured by the camera exceeding a predetermined value during operation, wherein the signal processing device is configured to determine a theft situation and issue an alarm or transmit the images captured by the camera to the outside in response to a facial image in images captured by the camera not matching a facial image stored in the memory during the surveillance mode operation. [2] The apparatus of claim 1, wherein the signal processing device is configured to operate in a normal mode in response to the facial image captured by the camera matching the facial image stored in the memory during operation, and the signal processing device is configured to switch to the monitoring mode in response to the facial image captured by the camera not matching the facial image stored in the memory for a predetermined period of time. [3] The device of claim 1, further comprising: an input device comprising a power key and a character key, wherein the signal processing device is configured to determine a theft situation and issue an alarm or transmit the image captured by the camera to the outside in response to the facial image in the image captured by the camera not matching the facial image stored in the memory and no input from the power key or the character key is detected for a predetermined period of time during operation in the monitor mode. [4] The apparatus of claim 1, wherein the signal processing device is configured to lock the screen of the display and prevent the power saving mode from changing to an off mode or a power saving mode in response to the theft situation being detected. [5] The apparatus of claim 1, wherein the signal processing device is configured not to turn off the power or to restart after turning off the power in response to the theft situation being detected and a power-off input being applied via a power button. [6] The apparatus of claim 1, wherein the signal processing device is configured to lock BIOS data or personal information data stored in the memory in response to the theft situation being detected. [7] The device of claim 1, further comprising: a network interface configured to perform wireless communication with a neighboring access point device, wherein the signal processing device is configured to establish a wireless connection with the access point device in response to the theft situation being detected and to send the image captured by the camera to a registered mobile terminal or a server. [8] The device according to claim 1, wherein the signal processing device is configured to activate only a part of internal devices during a power saving mode operation and to perform monitoring based on the activated part of the internal devices, and the signal processing device is configured to activate further internal devices and issue the alarm or send images taken by the camera to the outside in response to the monitoring result indicating the theft situation. [9] The device of claim 1, further comprising: a network interface configured to perform wireless communication with a neighboring access point device; and an audio output device configured to output a sound, wherein the signal processing device is configured to activate the camera during power saving mode operation, determine the theft situation in response to the facial image captured by the camera not matching the facial image stored in the memory, activate the network interface and the audio output device, and output an alarm via the audio output device or transmit images captured with the camera to the outside via the network interface. [10] The apparatus of claim 1, wherein the signal processing device is configured to issue an alarm and store an alarm mode flag in memory in response to detecting a forced shutdown input during monitor mode operation. [11] The device of claim 1, further comprising: a power supply arranged to output a direct current; an input device configured to output a power-on signal or a power-off signal based on the actuation of a power button; and a controller configured to enter a power saving mode or a standby mode, and controlling a DC / DC converter within the power supply to be turned off in response to receiving the turn-off signal or inputting a power saving or standby mode signal, and the DC / DC converter within the power supply to be turned on in response to receiving the turn-on signal. [12] The apparatus of claim 11, wherein the controller is configured to turn off the power supply in response to the power-off signal being received or the power-saving or standby mode signal being input, and to turn on the power supply in response to the power-on signal being received, wherein the power supply is configured to perform DC-DC conversion based on the power-on signal and supply the converted DC power to each device within the image display apparatus. [13] The apparatus of claim 11, wherein the power supply comprises: a battery configured to store a direct current input from an external source; the DC / DC converter configured to convert the direct current input from the external source or to convert the direct current stored in the battery and output the converted direct current; and a second DC / DC converter configured to adjust the level of the direct current converted by the DC / DC converter and to output the adjusted direct current. [14] The apparatus of claim 13, further comprising: a power management controller configured to receive a power-on signal from the signal processing device, wherein the power management controller is configured to output a control signal to the second DC / DC converter within the power supply in response to receiving the power-on signal. [15] Image display device comprising: a camera; an advertisement; a memory configured to store facial images of a registered user; and a signal processing device configured to activate only a portion of internal devices during power-saving mode operation and to perform monitoring based on the portion of the internal devices, wherein the signal processing device is configured to activate further internal devices among the internal devices and issue an alarm or send images captured by the camera to the outside in response to the monitoring result indicating a theft situation. [16] The apparatus of claim 15, further comprising: a network interface configured to perform wireless communication with a neighboring access point device; and an audio output device configured to output a sound, wherein the signal processing device is configured to activate the camera during power saving mode operation, determine the theft situation in response to the facial image captured by the camera not matching the facial image stored in the memory, activate the network interface and the audio output device, and output an alarm via the audio output device or send images captured by the camera to the outside via the network interface. [17] The apparatus of claim 15, wherein the signal processing device is configured to issue an alarm and store an alarm mode flag in memory in response to detecting a forced shutdown during monitor mode operation.

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