WO2023238981A1 - Dispositif d'affichage et procédé de fonctionnement associé - Google Patents

Dispositif d'affichage et procédé de fonctionnement associé Download PDF

Info

Publication number
WO2023238981A1
WO2023238981A1 PCT/KR2022/009058 KR2022009058W WO2023238981A1 WO 2023238981 A1 WO2023238981 A1 WO 2023238981A1 KR 2022009058 W KR2022009058 W KR 2022009058W WO 2023238981 A1 WO2023238981 A1 WO 2023238981A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery
display device
controller
display
charging current
Prior art date
Application number
PCT/KR2022/009058
Other languages
English (en)
Korean (ko)
Inventor
정덕용
Original Assignee
엘지전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 엘지전자 주식회사 filed Critical 엘지전자 주식회사
Publication of WO2023238981A1 publication Critical patent/WO2023238981A1/fr

Links

Images

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/445—Receiver circuitry for the reception of television signals according to analogue transmission standards for displaying additional information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/63—Generation or supply of power specially adapted for television receivers
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/04—Maintaining the quality of display appearance
    • G09G2320/041—Temperature compensation
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02—Details of power systems and of start or stop of display operation
    • G09G2330/021—Power management, e.g. power saving

Definitions

  • This disclosure relates to a display device.
  • Digital TV services using wired or wireless communication networks are becoming popular. Digital TV services can provide a variety of services that cannot be provided by existing analog broadcasting services.
  • IPTV Internet Protocol Television
  • smart TV service provide interactivity that allows users to actively select the type of program to watch and the viewing time.
  • IPTV and smart TV services can provide various additional services, such as Internet search, home shopping, and online games, based on this interactivity.
  • display devices that support portrait mode by rotating the display, that allow adjustment of the height or angle of the display, and that are easy to move are being released. Accordingly, there is an advantage in allowing users to watch from a desired location.
  • these display devices are equipped with batteries to improve mobility, and the lifespan and capacity of the batteries are very important.
  • the present disclosure seeks to provide a display device that minimizes performance degradation of a battery disposed adjacent to a display.
  • the present disclosure seeks to provide a display device that manages the ambient temperature of the battery to a preset temperature while minimizing the charging time of the battery.
  • a display device includes a display that displays an image, a controller that controls the luminance of the image, a battery, and a power supply circuit that supplies external power or power charged to the battery when driving the display device,
  • the charging current of the battery may vary based on luminance.
  • the controller can control the charging current to be lower as the brightness increases.
  • the controller outputs a PWM signal to control brightness to the display and can adjust the charging current according to the duty cycle of the PWM signal.
  • the controller controls the charging current to a first current when the duty cycle of the PWM signal falls within the first range, and controls the charging current to a second range lower than the first current when the duty cycle of the PWM signal falls within a second range higher than the first range. 2 Can be controlled by current.
  • the display device further includes a temperature sensor that detects the ambient temperature of the battery, and the controller can control brightness based on the ambient temperature detected by the temperature sensor.
  • the controller may control the display to display information on the time when battery charging is completed based on the charging current.
  • the controller can control the power supply circuit to supply only external power with the power used to drive the display device.
  • the controller may display a first icon when operating in a battery-free mode, and may display a second icon when not operating in a battery-free mode.
  • the controller may display information on the improvement of battery life according to the operation time in the battery-free mode.
  • the controller can adjust the ambient temperature of the battery to a preset charging temperature.
  • the charging current of the battery is varied based on the brightness, and both the brightness and the charging current are high, thereby minimizing the problem of excessively high temperature around the battery, thereby eliminating the problem of performance deterioration due to overheating of the battery. can be minimized.
  • the problem of battery overheating is minimized and the time required for battery charging is minimized. there is.
  • Figure 1 shows a block diagram of the configuration of a display device according to an embodiment of the present invention.
  • Figure 2 is a block diagram of a remote control device according to an embodiment of the present invention.
  • Figure 3 shows an example of the actual configuration of a remote control device according to an embodiment of the present invention.
  • Figure 4 shows an example of utilizing a remote control device according to an embodiment of the present invention.
  • 5A and 5B are diagrams for explaining the landscape mode and portrait mode of a stand-type display device according to an embodiment of the present disclosure.
  • FIG. 6 is a flowchart illustrating a method of operating a display device according to an embodiment of the present disclosure.
  • FIG. 7 is a flowchart illustrating a method by which a display device varies battery charging current according to an embodiment of the present disclosure.
  • FIG. 8 is a diagram showing the temperature when the display device operates in the method shown in FIG. 7.
  • Figure 9 is a diagram showing the temperature when the display device according to an embodiment of the present disclosure compensates the allowable temperature according to the surrounding environment.
  • FIG. 10 is a diagram showing the relationship between luminance and battery charging current in a display device according to an embodiment of the present disclosure.
  • FIG. 11 is a flowchart illustrating a method by which a display device varies battery charging current according to another embodiment of the present disclosure.
  • FIG. 12 is a diagram showing the relationship between luminance and battery charging current in a display device according to an embodiment of the present disclosure.
  • FIG. 13 is a flowchart illustrating a method by which a display device displays battery charging information according to an embodiment of the present disclosure.
  • FIG. 14 is a flowchart illustrating a method of operating a display device supporting a battery-free mode according to an embodiment of the present disclosure.
  • FIG. 15 is an example diagram illustrating screens displayed by a display device supporting a battery-free mode according to an embodiment of the present disclosure.
  • the display device is, for example, an intelligent display device that adds a computer support function to the broadcast reception function, and is faithful to the broadcast reception function while adding an Internet function, etc., such as a handwriting input device and a touch screen.
  • an Internet function etc.
  • it can be equipped with a more convenient interface such as a spatial remote control.
  • by supporting wired or wireless Internet functions it is possible to connect to the Internet and a computer and perform functions such as email, web browsing, banking, or gaming.
  • a standardized general-purpose OS can be used for these various functions.
  • the display device described in the present invention for example, various applications can be freely added or deleted on a general-purpose OS kernel, so various user-friendly functions can be performed.
  • the display device may be, for example, a network TV, HBBTV, smart TV, LED TV, OLED TV, etc., and in some cases, may also be applied to a smartphone.
  • Figure 1 shows a block diagram of the configuration of a display device according to an embodiment of the present invention.
  • the display device 100 includes a broadcast receiver 130, an external device interface 135, a memory 140, a user input interface 150, a controller 170, a wireless communication interface 173, and a display. It may include (180), a speaker (185), and a power supply circuit (190).
  • the broadcast receiver 130 may include a tuner 131, a demodulator 132, and a network interface 133.
  • the tuner 131 can select a specific broadcast channel according to a channel selection command.
  • the tuner 131 may receive a broadcast signal for a specific selected broadcast channel.
  • the demodulator 132 can separate the received broadcast signal into a video signal, an audio signal, and a data signal related to the broadcast program, and can restore the separated video signal, audio signal, and data signal to a form that can be output.
  • the external device interface 135 may receive an application or application list within an adjacent external device and transfer it to the controller 170 or memory 140.
  • the external device interface 135 may provide a connection path between the display device 100 and an external device.
  • the external device interface 135 may receive one or more of video and audio output from an external device connected wirelessly or wired to the display device 100 and transmit it to the controller 170.
  • the external device interface 135 may include a plurality of external input terminals.
  • the plurality of external input terminals may include an RGB terminal, one or more High Definition Multimedia Interface (HDMI) terminals, and a component terminal.
  • HDMI High Definition Multimedia Interface
  • An image signal from an external device input through the external device interface 135 may be output through the display 180.
  • a voice signal from an external device input through the external device interface 135 may be output through the speaker 185.
  • An external device that can be connected to the external device interface 135 may be any one of a set-top box, Blu-ray player, DVD player, game console, sound bar, smartphone, PC, USB memory, or home theater, but this is only an example.
  • the network interface 133 may provide an interface for connecting the display device 100 to a wired/wireless network including an Internet network.
  • the network interface 133 may transmit or receive data with other users or other electronic devices through a connected network or another network linked to the connected network.
  • some of the content data stored in the display device 100 may be transmitted to a selected user or selected electronic device among other users or other electronic devices pre-registered in the display device 100.
  • the network interface 133 can access a certain web page through a connected network or another network linked to the connected network. In other words, you can access a certain web page through a network and transmit or receive data with the corresponding server.
  • the network interface 133 can receive content or data provided by a content provider or network operator. That is, the network interface 133 can receive content and information related thereto, such as movies, advertisements, games, VODs, and broadcast signals, provided from a content provider or network provider through a network.
  • the network interface 133 can receive firmware update information and update files provided by a network operator, and can transmit data to the Internet, a content provider, or a network operator.
  • the network interface 133 can select and receive a desired application from among applications open to the public through a network.
  • the memory 140 stores programs for processing and controlling each signal in the controller 170, and can store signal-processed video, voice, or data signals.
  • the memory 140 may perform a function for temporary storage of video, voice, or data signals input from the external device interface 135 or the network interface 133, and may store information about a predetermined image through a channel memory function. You can also store information.
  • the memory 140 may store an application or application list input from the external device interface 135 or the network interface 133.
  • the display device 100 can play content files (video files, still image files, music files, document files, application files, etc.) stored in the memory 140 and provide them to the user.
  • content files video files, still image files, music files, document files, application files, etc.
  • the user input interface 150 may transmit a signal input by the user to the controller 170 or transmit a signal from the controller 170 to the user.
  • the user input interface 150 can be used remotely according to various communication methods such as Bluetooth, Ultra Wideband (WB), ZigBee, Radio Frequency (RF) communication, or infrared (IR) communication.
  • Control signals such as power on/off, channel selection, and screen settings can be received and processed from the control device 200, or control signals from the controller 170 can be processed to be transmitted to the remote control device 200.
  • the user input interface 150 can transmit control signals input from local keys (not shown) such as power key, channel key, volume key, and setting value to the controller 170.
  • local keys such as power key, channel key, volume key, and setting value
  • the video signal processed by the controller 170 may be input to the display 180 and displayed as an image corresponding to the video signal. Additionally, the image signal processed by the controller 170 may be input to an external output device through the external device interface 135.
  • the voice signal processed by the controller 170 may be output as audio to the speaker 185. Additionally, the voice signal processed by the controller 170 may be input to an external output device through the external device interface 135.
  • controller 170 may control overall operations within the display device 100.
  • controller 170 can control the display device 100 by a user command or internal program input through the user input interface 150, and connects to the network to display the application or application list desired by the user on the display device ( 100) You can make it available for download.
  • the controller 170 allows channel information selected by the user to be output through the display 180 or speaker 185 along with the processed video or audio signal.
  • the controller 170 controls video signals from an external device, for example, a camera or camcorder, input through the external device interface 135, according to an external device video playback command received through the user input interface 150.
  • the voice signal can be output through the display 180 or speaker 185.
  • the controller 170 can control the display 180 to display an image, for example, a broadcast image input through the tuner 131, an external input image input through the external device interface 135, Alternatively, an image input through the network interface unit or an image stored in the memory 140 may be controlled to be displayed on the display 180.
  • the image displayed on the display 180 may be a still image or a moving image, and may be a 2D image or a 3D image.
  • controller 170 can control the playback of content stored in the display device 100, received broadcast content, or external input content, which includes broadcast video, external input video, and audio files. , can be in various forms such as still images, connected web screens, and document files.
  • the wireless communication interface 173 can communicate with external devices through wired or wireless communication.
  • the wireless communication interface 173 can perform short range communication with an external device.
  • the wireless communication interface 173 includes BluetoothTM, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB), ZigBee, Near Field Communication (NFC), and Wi-Fi.
  • Short-distance communication can be supported using at least one of Fi (Wireless-Fidelity), Wi-Fi Direct, and Wireless USB (Wireless Universal Serial Bus) technologies.
  • This wireless communication interface 173 is between the display device 100 and a wireless communication system, between the display device 100 and another display device 100, or between the display device 100 through wireless area networks. It can support wireless communication between the network and the display device 100 (or external server).
  • Local area wireless networks may be wireless personal area networks.
  • the other display device 100 is a wearable device capable of exchanging data with (or interoperating with) the display device 100 according to the present invention, for example, a smartwatch, smart glasses. It can be a mobile terminal such as (smart glass), HMD (head mounted display), or smart phone.
  • the wireless communication interface 173 may detect (or recognize) a wearable device capable of communication around the display device 100 .
  • the controller 170 sends at least a portion of the data processed by the display device 100 to the wireless communication interface 173. It can be transmitted to a wearable device through . Accordingly, a user of a wearable device can use data processed by the display device 100 through the wearable device.
  • the display 180 converts the video signal, data signal, and OSD signal processed by the controller 170 or the video signal and data signal received from the external device interface 135 into R, G, and B signals, respectively, and provides a driving signal. can be created.
  • the display device 100 shown in FIG. 1 is only one embodiment of the present invention. Some of the illustrated components may be integrated, added, or omitted depending on the specifications of the display device 100 that is actually implemented.
  • two or more components may be combined into one component, or one component may be subdivided into two or more components.
  • the functions performed by each block are for explaining embodiments of the present invention, and the specific operations or devices do not limit the scope of the present invention.
  • the display device 100 does not have a tuner 131 and a demodulator 132 but has a network interface 133 or an external device interface 135. You can also receive and play video through the device.
  • the display device 100 is divided into an image processing device such as a set-top box for receiving broadcast signals or contents according to various network services, and a content playback device for playing content input from the image processing device. It can be implemented.
  • an image processing device such as a set-top box for receiving broadcast signals or contents according to various network services
  • a content playback device for playing content input from the image processing device. It can be implemented.
  • the method of operating a display device includes not only the display device 100 as described with reference to FIG. 1, but also an image processing device such as the separated set-top box or the display 180. ) and a content playback device having an audio output unit 185.
  • Figure 2 is a block diagram of a remote control device according to an embodiment of the present invention
  • Figure 3 shows an example of the actual configuration of the remote control device 200 according to an embodiment of the present invention.
  • the remote control device 200 includes a fingerprint reader 210, a wireless communication circuit 220, a user input interface 230, a sensor 240, an output interface 250, and a power supply circuit ( 260), memory 270, controller 280, and microphone 290.
  • the wireless communication circuit 220 transmits and receives signals to and from any one of the display devices according to the embodiments of the present invention described above.
  • the remote control device 200 has an RF circuit 221 capable of transmitting and receiving signals to and from the display device 100 in accordance with RF communication standards, and is capable of transmitting and receiving signals to and from the display device 100 in accordance with IR communication standards.
  • An IR circuit 223 may be provided.
  • the remote control device 200 may be provided with a Bluetooth circuit 225 capable of transmitting and receiving signals to and from the display device 100 according to the Bluetooth communication standard.
  • the remote control device 200 is provided with an NFC circuit 227 capable of transmitting and receiving signals with the display device 100 according to the NFC (Near Field Communication) communication standard, and displays the display device 100 according to the WLAN (Wireless LAN) communication standard.
  • a WLAN circuit 229 capable of transmitting and receiving signals to and from the device 100 may be provided.
  • the remote control device 200 transmits a signal containing information about the movement of the remote control device 200 to the display device 100 through the wireless communication circuit 220.
  • the remote control device 200 can receive signals transmitted by the display device 100 through the RF circuit 221 and, if necessary, turn on/off the display device 100 through the IR circuit 223. Commands for turning off, changing channels, changing volume, etc. can be sent.
  • the user input interface 230 may be comprised of a keypad, button, touch pad, or touch screen.
  • the user can input commands related to the display device 100 into the remote control device 200 by manipulating the user input interface 230. If the user input interface 230 has a hard key button, the user can input a command related to the display device 100 to the remote control device 200 through a push operation of the hard key button. This will be explained with reference to FIG. 3 .
  • the remote control device 200 may include a plurality of buttons.
  • the plurality of buttons include a fingerprint recognition button (212), power button (231), home button (232), live button (233), external input button (234), volume control button (235), voice recognition button (236), It may include a channel change button 237, a confirmation button 238, and a back button 239.
  • the fingerprint recognition button 212 may be a button for recognizing the user's fingerprint.
  • the fingerprint recognition button 212 is capable of a push operation and may receive a push operation and a fingerprint recognition operation.
  • the power button 231 may be a button for turning on/off the power of the display device 100.
  • the home button 232 may be a button for moving to the home screen of the display device 100.
  • the live button 233 may be a button for displaying a real-time broadcast program.
  • the external input button 234 may be a button for receiving an external input connected to the display device 100.
  • the volume control button 235 may be a button for adjusting the volume of the sound output by the display device 100.
  • the voice recognition button 236 may be a button for receiving the user's voice and recognizing the received voice.
  • the channel change button 237 may be a button for receiving a broadcast signal of a specific broadcast channel.
  • the confirmation button 238 may be a button for selecting a specific function, and the back button 239 may be a button for returning to the previous screen.
  • the user input interface 230 has a touch screen, the user can input commands related to the display device 100 through the remote control device 200 by touching a soft key on the touch screen. Additionally, the user input interface 230 may be provided with various types of input means that the user can operate, such as scroll keys and jog keys, and this embodiment does not limit the scope of the present invention.
  • the sensor 240 may include a gyro sensor 241 or an acceleration sensor 243, and the gyro sensor 241 may sense information about the movement of the remote control device 200.
  • the gyro sensor 241 can sense information about the operation of the remote control device 200 based on the x, y, and z axes, and the acceleration sensor 243 measures the moving speed of the remote control device 200. Information about such things can be sensed.
  • the remote control device 200 may further include a distance measurement sensor and can sense the distance from the display 180 of the display device 100.
  • the output interface 250 may output a video or audio signal corresponding to a manipulation of the user input interface 230 or a signal transmitted from the display device 100.
  • the user can recognize whether the output interface 250 is manipulating the user input interface 230 or controlling the display device 100.
  • the output interface 250 includes an LED 251 that turns on when the user input interface 230 is manipulated or a signal is transmitted and received with the display device 100 through the wireless communication unit 225, and a vibrator 253 that generates vibration. ), a speaker 255 that outputs sound, or a display 257 that outputs an image.
  • the power supply circuit 260 supplies power to the remote control device 200, and stops power supply when the remote control device 200 does not move for a predetermined period of time, thereby reducing power waste.
  • the power supply circuit 260 can resume power supply when a predetermined key provided in the remote control device 200 is operated.
  • the memory 270 may store various types of programs, application data, etc. necessary for controlling or operating the remote control device 200.
  • the remote control device 200 transmits and receives signals wirelessly through the display device 100 and the RF circuit 221, the remote control device 200 and the display device 100 transmit and receive signals through a predetermined frequency band. .
  • the controller 280 of the remote control device 200 stores and references information about the display device 100 paired with the remote control device 200 and the frequency band capable of wirelessly transmitting and receiving signals in the memory 270. You can.
  • the controller 280 controls all matters related to the control of the remote control device 200.
  • the controller 280 sends a signal corresponding to a predetermined key operation of the user input interface 230 or a signal corresponding to the movement of the remote control device 200 sensed by the sensor 240 through the wireless communication unit 225. 100).
  • the microphone 290 of the remote control device 200 can acquire voice.
  • Figure 4 shows an example of utilizing a remote control device according to an embodiment of the present invention.
  • FIG. 4 illustrates that a pointer 205 corresponding to the remote control device 200 is displayed on the display 180.
  • the user can move or rotate the remote control device 200 up and down, left and right.
  • the pointer 205 displayed on the display 180 of the display device 100 corresponds to the movement of the remote control device 200.
  • This remote control device 200 can be called a spatial remote control because the corresponding pointer 205 is moved and displayed according to movement in 3D space, as shown in the drawing.
  • FIG. 4 illustrates that when the user moves the remote control device 200 to the left, the pointer 205 displayed on the display 180 of the display device 100 also moves to the left correspondingly.
  • the display device 100 may calculate the coordinates of the pointer 205 from information about the movement of the remote control device 200.
  • the display device 100 may display the pointer 205 to correspond to the calculated coordinates.
  • FIG. 4 illustrates a case where a user moves the remote control device 200 away from the display 180 while pressing a specific button in the remote control device 200.
  • the selected area in the display 180 corresponding to the pointer 205 can be zoomed in and displayed enlarged.
  • the selected area in the display 180 corresponding to the pointer 205 may be zoomed out and displayed in a reduced size.
  • the selected area may be zoomed out, and when the remote control device 200 approaches the display 180, the selected area may be zoomed in.
  • the moving speed or direction of the pointer 205 may correspond to the moving speed or direction of the remote control device 200.
  • a pointer in this specification refers to an object displayed on the display 180 in response to the operation of the remote control device 200.
  • the pointer 205 can be an object of various shapes other than the arrow shape shown in the drawing.
  • concepts may include dots, cursors, prompts, thick outlines, etc.
  • the pointer 205 can be displayed not only in response to one of the horizontal and vertical axes on the display 180, but also in response to multiple points, such as a line or surface. .
  • 5A and 5B are diagrams for explaining the landscape mode and portrait mode of a stand-type display device according to an embodiment of the present disclosure.
  • FIGS. 5A and 5B a stand type display device 100 is shown.
  • a shaft 103 and a stand base 105 may be connected to the display device 100.
  • the shaft 103 may connect the display device 100 and the stand base 105. Shaft 103 may extend vertically.
  • the lower end of the shaft 103 may be connected to the edge of the stand base 105.
  • the lower end of the shaft 103 may be rotatably connected to the circumference of the stand base 105.
  • the display device 100 and the shaft 103 may rotate about a vertical axis with respect to the stand base 105.
  • the upper part of the shaft 103 may be connected to the rear of the display device 100.
  • the stand base 105 may serve to support the display device 100.
  • the display device 100 may be configured to include a shaft 103 and a stand base 105.
  • the display device 100 can rotate around a point where the top of the shaft 103 and the rear of the display 180 come into contact.
  • FIG. 5A shows that the display 180 operates in landscape mode with an attitude in which the horizontal length is greater than the vertical length
  • FIG. 5b shows that the display 180 operates in landscape mode with an attitude in which the vertical length is greater than the horizontal length. It can be expressed.
  • stand-type display devices Users can move around holding a stand-type display device.
  • stand-type display devices have improved mobility, so users are not restricted by placement location.
  • the stand-type display device with improved mobility may further include a battery 192 (see FIG. 6).
  • a stand-type display device that includes a battery can operate by receiving power charged in the battery even when not connected to an outlet, so the movement radius can be expanded.
  • a battery may be provided inside the display device 100.
  • the battery may be provided on the shaft 103 or the stand base 105. In this disclosure, it is assumed that a battery is provided inside the display device 100.
  • Figure 6 is an example diagram for explaining the location of a battery provided in a stand-type display device according to an embodiment of the present disclosure.
  • FIG. 6 may be a horizontal cross-sectional view of the display device 100 shown in FIG. 5B.
  • a display 180 may be provided at the front of the display device 100, and a battery 192 and a printed circuit board (PCB) may be provided at the rear of the display 180. there is.
  • the PCB may be a board on which at least one configuration described in FIG. 1, such as the controller 170 or the power supply circuit 190, is integrated.
  • the battery 192 can convert chemical energy into electricity and store it to supply power required to drive the display device 100.
  • the battery 192 is charged while the display device 100 is connected to an external power source (e.g., an outlet), and is discharged when the display device 100 is operated without being connected to an external power source. It can supply the energy needed for movement.
  • an external power source e.g., an outlet
  • the lifespan and capacity of the battery 192 are generally affected by temperature.
  • lifespan may refer to the maximum amount of charge that can be charged to the battery 192.
  • the maximum charge of the battery 192 may decrease over time or as charging/discharging is repeated. And, this decrease in lifespan may vary depending on temperature.
  • the battery 192 has a lifespan of 94% when left at 0 degrees for one year, 80% when left at 25 degrees for one year, and 65% when left at 40 degrees for one year. It can be. In other words, the lifespan of the battery 192 tends to deteriorate faster as it is managed in a high-temperature environment.
  • Capacity may refer to the usable time when the battery 192 is fully charged.
  • the battery 192 may have the highest capacity at 25 degrees, and if the capacity is 100% at 25 degrees, the capacity is 95% at 45 degrees, the capacity is 85% at 0 degrees, and the capacity is 85% at -10 degrees. It could be 70%. That is, the battery 192 has maximum capacity at room temperature, and the capacity tends to decrease as the temperature decreases.
  • the controller 170 can set the charging temperature range of the battery 192 from 0 to 50 degrees and the discharging temperature range (or the portable use temperature range of the display device 100) from -20 to 60 degrees.
  • a battery 192 at 25 degrees may rise to about 29.5 degrees when charged at 2.36 A, rise to about 28.8 degrees when charged at 1.8 A, and rise to about 29.9 degrees when discharged by use. there is.
  • a battery 192 at 40 degrees may rise to about 44.5 degrees when charged at 2.36A, rise to about 43.8 degrees when charged at 1.8A, and rise to about 44.9 degrees when discharged by use. .
  • the temperature of the battery 192 In terms of reliability, it is desirable to manage the temperature of the battery 192 with a predetermined difference, that is, a margin, compared to the charge/discharge temperature range.
  • a predetermined difference that is, a margin
  • the temperature rises to about 44.5 degrees, and the difference from the maximum charging temperature of 50 degrees is small, so there is a problem of reduced reliability. Due to this problem, when the battery 192 is charged at 1.8A, the charging time becomes longer.
  • the display device 100 changes the charging current of the battery 192 to improve reliability and minimize charging time.
  • FIG. 7 is a flowchart illustrating a method by which a display device varies battery charging current according to an embodiment of the present disclosure.
  • the controller 170 may obtain the luminance (S11) and adjust the charging current based on the luminance (S13).
  • the display 180 displays an image
  • the controller 170 can control the brightness of the image displayed on the display 180.
  • the controller 170 may control the brightness of the image by receiving a command to adjust the brightness through the user input interface 150.
  • the controller 170 may control the brightness of the image based on the surrounding brightness detected through an illuminance sensor (not shown). Additionally, the controller 170 can control the brightness of the image for various reasons.
  • the power supply circuit 190 may supply external power or power charged to the battery 192 when the display device 100 is driven. That is, the power supply circuit 190 can supply external power or power charged in the battery 192 to each component of the display device 100 when the display device 100 operates.
  • the power supply circuit 190 may be connected to an outlet through an adapter to supply external power, or may supply charged power to the battery 192.
  • the battery 192 can be charged when the display device 100 receives external power, and in this case, the charging current of the battery 192 can vary based on the brightness of the image.
  • the controller 170 can control the charging current to be lower as the brightness of the image increases.
  • the controller 170 may classify the luminance of the image and the charging current of the battery 192 into three levels (weak, medium, high), but the number of levels at this time is only illustrative. It is reasonable to say that it is not limited.
  • the controller 170 may adjust the charging current to high when the luminance of the image is low, adjust the charging current to medium when the luminance of the image is medium, and adjust the charging current to low when the luminance of the image is high.
  • the controller 170 may determine the brightness of the image based on a brightness value set according to a user command, or may judge it based on a PWM signal output to the display 180 to control the brightness.
  • the controller 170 may output a PWM signal with a higher duty cycle as the luminance increases to the display 180. Accordingly, the controller 170 can adjust the charging current according to the duty cycle of the PWM signal. For example, the controller 170 controls the charging current to the first current when the duty cycle of the PWM signal falls within the first range (e.g., 0 to 50%), and the duty cycle of the PWM signal falls within the first range. If it is in a higher second range (e.g., 50 to 75%), the charging current is controlled to a second current that is lower than the first current, and the duty cycle of the PWM signal is in a third range (e.g., higher than the second range). For example, if it falls within the range (75 to 100%), the charging current can be controlled to a third current that is lower than the second current.
  • the first range e.g., 0 to 50%
  • the duty cycle of the PWM signal falls within the first range.
  • the duty cycle of the PWM signal is in a third range (e.
  • the controller 170 can adjust the charging current charged to the battery 192 based on the luminance of the image, and accordingly manage the temperature of the battery 192 according to the charging temperature range. That is, the controller 170 can control the temperature of the battery 192 to an allowable temperature by adjusting the charging current charged to the battery 192 based on the luminance of the image.
  • the allowable temperature may be a temperature corresponding to the maximum value of the charging temperature range described above.
  • FIG. 8 is a diagram showing the temperature when the display device operates in the method shown in FIG. 7.
  • A may represent the temperature due to the luminance of the image.
  • the brightness of the image can be set by user settings or an illuminance sensor (not shown).
  • B represents the temperature resulting from the charging current of the battery 192
  • C may be the allowable temperature of the battery 192.
  • the controller 170 may calculate the temperature due to charging current and the temperature due to luminance. Accordingly, the controller 170 may determine the charging current of the battery 192 such that the temperature due to the charging current of the battery 192 is a value obtained by subtracting the temperature due to luminance from the allowable temperature of the battery 192.
  • the temperature of the battery 192 is managed so as not to exceed the allowable temperature, thereby improving reliability and minimizing charging time and lifespan. It has the advantage of preventing deterioration.
  • the problem of the battery 192 temperature exceeding the allowable temperature due to the surrounding environment can be minimized.
  • Figure 9 is a diagram showing the temperature when the display device according to an embodiment of the present disclosure compensates the allowable temperature according to the surrounding environment.
  • FIG. 9 Each of A, B, and C in FIG. 9 is the same as described in FIG. 8, but the difference is that C is compensated by the ambient temperature (T). Below, the explanation will focus on the differences.
  • the controller 170 When the controller 170 obtains the ambient temperature (T), it can compensate for the allowable temperature C. For example, the controller 170 may correct the allowable temperature C to a preset allowable temperature, that is, a value obtained by subtracting the compensation coefficient (C') from the temperature corresponding to the maximum value of the charging temperature section. The controller 170 may obtain the compensation coefficient (C') based on the ambient temperature (T). For example, the controller 170 obtains the compensation coefficient (C') as a first value (e.g., 0) when the ambient temperature (T) is in a first temperature range (e.g., 15 to 25 degrees).
  • a first value e.g., 0
  • the compensation coefficient (C') is set to a second value (e.g., 15)
  • the compensation coefficient (C') is set to a third value (C') smaller than the first value. For example, it can be obtained with -10).
  • the controller 170 corrects the allowable temperature (C) based on the ambient temperature (T), and thus the charging current (B) of the battery 192 determined by C-A may also be changed.
  • the controller 170 can obtain the ambient temperature (T) in various ways.
  • the controller 170 may obtain the ambient temperature (T) upon receiving a user input command.
  • the controller 170 may acquire the ambient temperature (T) based on regional information set when the display device 100 is released. That is, the controller 170 determines that the ambient temperature (T) falls within the first temperature range when the region information is the first region, and determines that the ambient temperature (T) falls within the second temperature range when the region information represents the second region. It can be judged as belonging.
  • the controller 170 may obtain the ambient temperature (T) based on an ambient temperature sensor (not shown) provided in the display device 100.
  • Figure 10 is a diagram showing the relationship between luminance and battery charging current in a display device according to an embodiment of the present disclosure.
  • the horizontal axis represents time
  • the vertical axis represents luminance and the magnitude of charging current.
  • the numbers on the vertical axis are conversions of luminance and charging current into percentages, and do not correspond to absolute values.
  • FIG. 10(a) shows a case where the battery charging current is fixed regardless of luminance
  • FIG. 10(b) shows a case where the battery charging current varies based on luminance.
  • the battery charging current when the battery charging current is fixed, the battery charging current may be constant even if the luminance increases.
  • the battery charging current may gradually change to 0 at the point when charging of the battery 192 is completed (a point corresponding to approximately 86 on the horizontal axis).
  • the battery charging current may gradually change to 0 at the point when charging of the battery 192 is completed (a point corresponding to approximately 92 on the horizontal axis).
  • the display device 100 may adjust the battery charging current based on the ambient temperature of the battery 192.
  • FIG. 11 is a flowchart illustrating a method by which a display device varies battery charging current according to another embodiment of the present disclosure.
  • the controller 170 may detect the temperature around the battery (S21) and adjust the charging current based on the temperature around the battery (S23).
  • the display device 100 may further include a temperature sensor (not shown) that detects the ambient temperature of the battery 192.
  • a temperature sensor (not shown) may be placed adjacent to the battery 192, but the location of the battery 192 may vary.
  • the controller 170 may control the brightness of the image based on the ambient temperature detected by a temperature sensor (not shown).
  • the ambient temperature of the battery 192 may be affected by brightness, load of the controller 170, operation of a cooling device (not shown), operation of a heating device (not shown), etc.
  • a cooling device not shown
  • a heating device not shown
  • the ambient temperature of the battery 192 may increase. You can.
  • the cooling device (not shown) and the heating device (not shown) may be configured to manage the ambient temperature of the battery 192 or the controller 170.
  • the controller 170 obtains the ambient temperature of the battery 192 through a temperature sensor (not shown) and adjusts the charging current of the battery 192 so that the ambient temperature of the battery 192 falls within the charge/discharge temperature range. It can be adjusted.
  • the controller 170 controls the brightness, controller 170, cooling device (not shown), and heating device (not shown) based on the ambient temperature of the battery 192 detected through a temperature sensor (not shown). At least one of the following (not shown) may be controlled. That is, the controller 170 lowers the luminance as the ambient temperature of the battery 192 increases, reduces the load on the controller 170, or operates a cooling device (not shown) to lower the ambient temperature of the battery 192. It can be lowered. Conversely, the controller 170 adjusts the luminance to be higher as the ambient temperature of the battery 192 becomes lower, increases the load of the controller 170, or operates a heating device (not shown) to increase the ambient temperature of the battery 192. It can be raised.
  • the display device 100 may adjust the battery charging current based on the luminance and the ambient temperature of the battery 192.
  • the display device 100 may operate according to a flowchart that combines the flowchart shown in FIG. 7 and the flowchart shown in FIG. 11.
  • the controller 170 may obtain each of the brightness and the ambient temperature of the battery 192 and adjust the charging current based on both the brightness and the ambient temperature of the battery 192.
  • the controller 170 can adjust the charging current to be inversely proportional to the luminance and at the same time adjust the charging current to be inversely proportional to the ambient temperature of the battery 192.
  • FIG. 12 is a diagram showing the relationship between luminance and battery charging current in a display device according to an embodiment of the present disclosure.
  • the horizontal axis represents time
  • the vertical axis represents brightness, battery ambient temperature, and magnitude of charging current.
  • the numbers on the vertical axis are conversions of luminance, battery ambient temperature, and charging current into percentages, and do not correspond to absolute values.
  • FIG. 12(a) shows a case where the battery charging current is varied based on the battery surrounding temperature regardless of luminance
  • FIG. 12(b) shows a case where the battery charging current is varied based on luminance.
  • the battery charging current can be fixed when the luminance changes. However, when the temperature around the battery increases due to an increase in brightness, etc. (indicated by a circle), the battery charging current is reduced, and when the temperature around the battery decreases, the battery charging current can be controlled to increase again.
  • the display device 100 may display battery charging information when adjusting the charging current of the battery 192 based on luminance.
  • FIG. 13 is a flowchart illustrating a method by which a display device displays battery charging information according to an embodiment of the present disclosure.
  • the controller 170 may obtain the luminance of the image (S31) and adjust the charging current based on the luminance (S33). Since steps S31 and S33 described above are the same as those described in FIG. 7, overlapping descriptions will be omitted.
  • the controller 170 may control the display 180 to display information on the time when charging of the battery 192 is completed based on the charging current (S35).
  • the controller 170 calculates the time remaining until charging is completed when charging the battery 192 with the adjusted charging current, and displays the display 180 to display the calculated time. ) can be controlled.
  • the battery 192 may include a battery management system (BMS), and the controller 170 may calculate the time at which charging of the battery 192 is completed through the BMS.
  • BMS battery management system
  • the display 180 may display information on the time when charging of the battery 192 is completed, such as “There are 60 minutes remaining until the battery is fully charged.”
  • the controller 170 may control the display 180 to further display information on how to induce fast charging along with information on the time when charging of the battery 192 is completed. For example, display 180 might say “There are 60 minutes left until the battery is fully charged. Information on the time when charging of the battery 192 is completed and information on how to induce fast charging, such as “When the power is turned off, the time required to fully charge the battery is shortened by 30 minutes,” can be displayed.
  • the display device 100 may support a battery-free mode.
  • FIG. 14 is a flowchart illustrating a method of operating a display device supporting a battery-free mode according to an embodiment of the present disclosure.
  • the controller 170 may obtain the luminance (S41) and adjust the charging current based on the luminance (S43). Since the above-mentioned steps S41 and S43 are the same as those described in FIG. 7, overlapping descriptions will be omitted.
  • the controller 170 may determine whether a command to operate in a battery-free mode has been received (S45).
  • the battery non-use mode refers to an operation mode that intentionally blocks the use of the battery 192, and may be supported for purposes such as extending the life of the battery 192.
  • the display 180 may display a screen for selecting whether to operate in a battery-free mode.
  • the controller 170 may receive a user input for selecting whether to operate in a battery-free mode through the user input interface 150.
  • the controller 170 When the controller 170 receives an operation command for the battery-free mode, it can operate in the battery-free mode (S47).
  • the controller 170 may control the power supply circuit 190 to supply only external power as power used to drive the display device 100 when operating in a battery-free mode.
  • the controller 170 may turn off the power of the battery 192 when entering the battery non-use mode. Since the battery 192 is turned off, the display device 100 can operate only when connected to an outlet, and if it is not connected to an outlet, the display device 100 itself may be turned off.
  • the controller 170 can control the surrounding temperature of the battery 192 to a preset charging temperature when operating in a battery-free mode.
  • the troller 170 may operate a cooling device (not shown) to cool and maintain the ambient temperature of the battery 192 at a preset charging temperature.
  • the controller 170 may display an icon indicating that it is operating in the battery-free mode. This will be explained in detail in FIG. 15.
  • the controller 170 may determine whether a command to end the battery-free mode has been received (S48).
  • the controller 170 When the controller 170 receives a command to end the battery unused mode, it can display information on improving battery life (S49).
  • the controller 170 may display information on the improvement of battery life according to the operation time in the battery unused mode. The longer the operating time in battery-free mode, the longer the battery life can be improved. Accordingly, the controller 170 may calculate the improved battery life based on the battery unused mode maintenance time and control the display 180 to display improved battery life information.
  • controller 170 may calculate the battery life based on the ambient temperature and the battery unused mode maintenance time and control the display 180 to display information on improving battery life. A method of displaying battery life improvement information will be described with reference to FIG. 15.
  • FIG. 15 is an example diagram illustrating screens displayed by a display device supporting a battery-free mode according to an embodiment of the present disclosure.
  • Figure 15(a) may be an example of a screen displayed by the display 180 when operating in battery use mode.
  • the display 180 may display a screen including a battery icon as shown in (a) of FIG. 15 while operating in the battery use mode.
  • the battery icon may include at least one of a battery image and remaining amount.
  • Figure 15(b) may be an example of a screen displayed by the display 180 when operating in a battery-free mode.
  • the display 180 may display a screen including an outlet icon as shown in (b) of FIG. 15 while operating in a battery-free mode.
  • the outlet icon may include an outlet image.
  • the controller 170 displays a first icon (e.g., an outlet icon) when operating in a battery-free mode, and displays a second icon (e.g., a battery icon) when not operating in a battery-free mode.
  • the display 180 can be controlled to do so.
  • the controller 170 can change the icon displayed on the screen depending on whether the operation is in a battery-free mode.
  • (c) of FIG. 15 may be an example of a screen on which the display 180 displays battery life improvement information.
  • the display 180 may display improvement information on battery life calculated based on the operation time in the battery-free mode.
  • the display 180 may display a screen including a message indicating improved battery life, such as “Battery life has been improved by 30 days,” as shown in (c) of FIG. 15.
  • the above-described method can be implemented as processor-readable code on a program-recorded medium.
  • media that the processor can read include ROM, RAM, CD-ROM, magnetic tape, floppy disk, and optical data storage devices.
  • the display device described above is not limited to the configuration and method of the above-described embodiments, and the embodiments may be configured by selectively combining all or part of each embodiment so that various modifications can be made. It may be possible.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

Selon un mode de réalisation de la présente invention, un dispositif d'affichage comprend : un dispositif d'affichage servant à afficher une image ; un dispositif de commande servant à commander la luminance de l'image ; une batterie ; et un circuit d'alimentation électrique qui fournit une puissance externe ou une puissance chargée par batterie lorsque le dispositif d'affichage est activé, le courant de charge de la batterie pouvant être modifié en fonction de la luminance.
PCT/KR2022/009058 2022-06-10 2022-06-24 Dispositif d'affichage et procédé de fonctionnement associé WO2023238981A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2022-0070680 2022-06-10
KR1020220070680A KR20230170321A (ko) 2022-06-10 2022-06-10 디스플레이 장치 및 그의 동작 방법

Publications (1)

Publication Number Publication Date
WO2023238981A1 true WO2023238981A1 (fr) 2023-12-14

Family

ID=89118518

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2022/009058 WO2023238981A1 (fr) 2022-06-10 2022-06-24 Dispositif d'affichage et procédé de fonctionnement associé

Country Status (2)

Country Link
KR (1) KR20230170321A (fr)
WO (1) WO2023238981A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05181430A (ja) * 1991-06-17 1993-07-23 Toshiba Corp コンピュータシステムの電源制御装置及び電源制御方法
JP2007081462A (ja) * 2005-09-09 2007-03-29 Canon Inc 撮像装置及びその制御方法
KR20120130454A (ko) * 2011-05-23 2012-12-03 삼성전자주식회사 디스플레이장치 및 그 제어방법
KR101853661B1 (ko) * 2010-08-20 2018-05-03 엘지전자 주식회사 전자기기 및 그 전원제어방법
KR20200070630A (ko) * 2018-12-10 2020-06-18 삼성전자주식회사 배터리의 충전 사이클 또는 방전 사이클을 조절하기 위한 전자 장치 및 방법

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05181430A (ja) * 1991-06-17 1993-07-23 Toshiba Corp コンピュータシステムの電源制御装置及び電源制御方法
JP2007081462A (ja) * 2005-09-09 2007-03-29 Canon Inc 撮像装置及びその制御方法
KR101853661B1 (ko) * 2010-08-20 2018-05-03 엘지전자 주식회사 전자기기 및 그 전원제어방법
KR20120130454A (ko) * 2011-05-23 2012-12-03 삼성전자주식회사 디스플레이장치 및 그 제어방법
KR20200070630A (ko) * 2018-12-10 2020-06-18 삼성전자주식회사 배터리의 충전 사이클 또는 방전 사이클을 조절하기 위한 전자 장치 및 방법

Also Published As

Publication number Publication date
KR20230170321A (ko) 2023-12-19

Similar Documents

Publication Publication Date Title
WO2016204520A1 (fr) Dispositif d'affichage et son procédé de fonctionnement
WO2021029447A1 (fr) Dispositif d'affichage et son procédé de fonctionnement
WO2019009453A1 (fr) Dispositif d'affichage
WO2021025245A1 (fr) Dispositif d'affichage et système de son surround
WO2021010511A1 (fr) Dispositif d'affichage
WO2021020627A1 (fr) Dispositif d'affichage et son procédé de fonctionnement
WO2023238981A1 (fr) Dispositif d'affichage et procédé de fonctionnement associé
WO2022014739A1 (fr) Dispositif d'affichage et son procédé de fonctionnement
WO2022149650A1 (fr) Dispositif d'affichage et système d'affichage
WO2021040074A1 (fr) Dispositif d'affichage et système de son surround
WO2021029469A1 (fr) Dispositif d'affichage et son procédé de fonctionnement
WO2024106548A1 (fr) Dispositif d'affichage et son procédé de fonctionnement
WO2023229054A1 (fr) Dispositif d'affichage
WO2023038166A1 (fr) Dispositif d'affichage
WO2024071488A1 (fr) Dispositif d'affichage transparent
WO2024128329A1 (fr) Dispositif d'affichage et procédé de commande d'alimentation électrique associé
WO2023238966A1 (fr) Dispositif d'affichage transparent et son procédé de fonctionnement
WO2024154843A1 (fr) Dispositif d'affichage et procédé de réduction de consommation d'énergie de ce dispositif
WO2023163253A1 (fr) Dispositif d'affichage, dispositif de télécommande et système d'affichage le comprenant
WO2024135871A1 (fr) Dispositif d'affichage et procédé de commande associé
WO2024101491A1 (fr) Dispositif d'affichage transparent et son procédé de fonctionnement
WO2023182624A1 (fr) Dispositif d'affichage
WO2022255519A1 (fr) Dispositif d'affichage et son procédé de fonctionnement
WO2022260216A1 (fr) Dispositif d'affichage
WO2024071485A1 (fr) Dispositif d'affichage et procédé de commande de dispositif d'affichage

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22945940

Country of ref document: EP

Kind code of ref document: A1