CN111316660B - Display device and method for operating the same - Google Patents

Display device and method for operating the same Download PDF

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Publication number
CN111316660B
CN111316660B CN201880072065.3A CN201880072065A CN111316660B CN 111316660 B CN111316660 B CN 111316660B CN 201880072065 A CN201880072065 A CN 201880072065A CN 111316660 B CN111316660 B CN 111316660B
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China
Prior art keywords
display device
power
power input
input
cold start
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CN201880072065.3A
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Chinese (zh)
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CN111316660A (en
Inventor
崔贤石
李承俊
朴裕镇
咸喆熙
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Samsung Electronics Co Ltd
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Samsung Electronics Co Ltd
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Priority claimed from PCT/KR2018/016333 external-priority patent/WO2019125007A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/443—OS processes, e.g. booting an STB, implementing a Java virtual machine in an STB or power management in an STB
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06N—COMPUTING ARRANGEMENTS BASED ON SPECIFIC COMPUTATIONAL MODELS
    • G06N20/00—Machine learning
    • 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

Abstract

A display apparatus and a method of operating the same are disclosed. The display device includes: a user input interface; a memory; and a processor configured to: receiving a power input to the display device via a user input interface, in response to receiving the power input, obtaining time information of the display device, wherein the time information of the display device includes at least one of information on one or more operating times of the display device before receiving the power input and information on one or more waiting times of the display device before receiving the power input; determining whether to perform a cold start operation based on the time information; and in response to determining to perform the cold start operation, performing the cold start operation.

Description

Display device and method for operating the same
Technical Field
The present disclosure relates to a display apparatus and a method of operating the same, and more particularly, to a display apparatus for performing error recovery and a method of operating the same.
Background
An image display apparatus such as a television displays images viewable by a user. The user can view the broadcast received by the image display apparatus. The broadcast exists in a broadcast signal transmitted from a broadcasting station and is selected by a user. Recently, broadcasting is transitioning from analog broadcasting to digital broadcasting worldwide.
Digital broadcasting refers to broadcasting that transmits digitized image and audio signals. Digital broadcasting is more resistant to external noise and thus has little data loss, can easily correct errors, and provides a clear high-definition screen, compared to analog broadcasting. Further, unlike analog broadcasting, digital broadcasting supports two-way communication between an image display device and a broadcast provider.
Recently, a smart Television (TV) providing a digital broadcasting function and various supplementary contents has been developed. The smart TV may be selected according to a user without manual operation, and may be designed to analyze and provide contents preferred by the user without direct user manipulation.
Disclosure of Invention
Technical problem
When an error occurs during operation of the display device, the user may power cycle the display device keys for error recovery. However, when the display device has a suspend to RAM function or an instant start function, error recovery may be difficult even if power cycling is performed.
Technical scheme
A display apparatus for performing a cold start operation to predict occurrence of an error in the display apparatus in consideration of a user operation mode when the display apparatus receives a user power on/off input and recover the error accordingly, and a method of operating the same are provided.
According to an aspect of the present disclosure, there is provided a display apparatus, wherein the display apparatus includes: a user input interface; a memory storing one or more instructions; and a processor configured to execute the one or more instructions stored in the memory to: receiving a power input to the display device via a user input interface; in response to receiving the power input, obtaining time information of the display device, wherein the time information of the display device includes at least one of information about one or more operation times of the display device before receiving the power input and information about one or more waiting times of the display device before receiving the power input; determining whether to perform a cold start operation based on the time information; and in response to determining to perform the cold start operation, performing the cold start operation.
The display apparatus may further include a volatile memory, and the cold start operation includes an operation of cold-powering off the display apparatus and an operation of starting the display apparatus, wherein power supply to the volatile memory is interrupted in the operation of cold-powering off the display apparatus.
The power inputs may include a first power input and a second power input, wherein the processor is configured to execute the one or more instructions to: in response to receiving the second power input, obtaining first time information indicative of a time between the first power input and the second power input; determining whether the first time information corresponds to a predetermined first pattern; and determining whether to perform a cold start operation of the display apparatus based on whether the first time information corresponds to the predetermined first mode.
The first time information may indicate a waiting time of the display device when the first power input is a power-off input to the display device and the second power input is a power-on input to the display device, and wherein the first time information indicates an operation time of the display device when the first power input is the power-on input to the display device and the second power input is the power-off input to the display device.
The processor may be configured to execute the one or more instructions to determine that the first time information corresponds to the predetermined first pattern when the first time information is less than a first threshold.
The first threshold may be updated by the server or updated according to a result determined through machine learning.
The power inputs may include a first power input, a second power input, and a third power input, and wherein the processor is configured to execute the one or more instructions to: in response to receiving the third power input, obtaining first time information indicative of a time between the first power input and the second power input and second time information indicative of a time between the second power input and the third power input; determining whether the first time information corresponds to at least one of a predetermined first pattern and the second time information corresponds to a predetermined second pattern; and determining whether to perform a cold start operation of the display apparatus according to a result of the determination as to whether the first time information corresponds to the at least one of the predetermined first mode and the second time information corresponds to the predetermined second mode.
The processor may be configured to execute the one or more instructions to determine to perform a cold start operation when it is determined that the first time information is less than a first threshold and the second time information is less than a second threshold.
The processor may be configured to execute the one or more instructions to determine to perform a cold start operation when the first time information is determined to be less than the first threshold or the second time information is determined to be less than the second threshold.
The power input may include a first power input and a second power input, and wherein the processor is further configured to execute the one or more instructions to: in response to receiving the first power input, switching to an information mode for displaying information on the display by executing a predetermined application set to be executed in correspondence with the first power input; and in response to receiving the second power input, switching to a normal mode in which an application being executed on the display device prior to the first power input is continued to be executed. In the normal mode, an application displaying the broadcast content may be executed, and thus the broadcast content may be displayed, wherein when a first power input is received during execution of the application displaying the broadcast content in the normal mode, execution of the application displaying the broadcast content may be stopped, and a predetermined application or widget set to be executed in response to the first power input may be executed.
According to an aspect of the present disclosure, there is provided a method of operating a display apparatus, wherein the method includes: receiving a power input to the display device; obtaining time information of the display device in response to receiving the power input, wherein the time information of the display device includes at least one of information on one or more operation times of the display device before receiving the power input and information on one or more waiting times of the display device before receiving the power input; determining whether to perform a cold start operation based on the time information; and in response to determining to perform the cold start operation, performing the cold start operation.
According to another aspect of the present disclosure, there is provided a non-transitory computer-readable recording medium having recorded thereon a program for executing the method of operating a display apparatus.
According to an aspect of the present disclosure, there is provided an electronic apparatus, wherein the electronic apparatus includes: volatile memory, non-volatile memory, and a processor, wherein the processor is configured to execute one or more instructions to: the method includes receiving a power-on input to the electronic device, obtaining a duration between the power-on input and a power-off input before the power-on input, and performing cold start control or warm start control according to the obtained duration.
The processor may include a CPU and a microcomputer, and the microcomputer may be configured to: counting a duration between a power-on input and a power-off input prior to the power-on input; determining whether the counted duration is equal to or less than a threshold, blocking power supply to the volatile memory and performing cold start control by instructing the CPU to perform a cold start operation when the counted duration is determined to be equal to or less than the threshold, and performing warm start control by instructing the CPU to perform a warm start operation when the counted duration exceeds the threshold.
Advantageous effects
According to the embodiment, in the case where a problem occurs during the operation of the display apparatus to which the instant-on technology is applied, when the user repeatedly turns on and off the power key to solve the problem, the pattern in which the user presses the power key may be analyzed, thereby automatically restoring the operation error problem of the display apparatus by determining the user's own cold-start intention.
Drawings
The above and other aspects, features and advantages of particular embodiments of the present disclosure will become more apparent from the following description taken in conjunction with the accompanying drawings in which:
fig. 1 is a reference diagram for explaining a concept according to an embodiment;
fig. 2 is a reference diagram for explaining an example of a system recovery method according to the embodiment;
fig. 3 is a reference diagram for explaining an example of a system recovery method according to the embodiment;
fig. 4 is a schematic block diagram of a display device according to an embodiment;
fig. 5 shows a block diagram of a display device according to an embodiment;
fig. 6 is a flowchart illustrating a method of operating a display apparatus according to an embodiment;
fig. 7 is a reference diagram for explaining a waiting time and an operation time before a power input according to an embodiment;
fig. 8 is a reference diagram for explaining various user modes recognized for determining whether a cold start is required when a display apparatus receives a power key input according to an embodiment;
fig. 9 illustrates an example in which a display device determines whether a cold start is required using time information according to an embodiment;
fig. 10 illustrates an example in which a display apparatus determines whether a cold start is required using time information according to an embodiment;
fig. 11 illustrates an example in which a display apparatus determines whether a cold start is required using time information according to an embodiment;
fig. 12 illustrates an example in which a display apparatus determines whether a cold start is required using time information according to an embodiment;
fig. 13 illustrates an example in which a display apparatus determines whether a cold start is required using time information according to an embodiment;
fig. 14 is a reference diagram for explaining an operation in the display device to which the mode switching function is applied according to a power input;
fig. 15 is a reference diagram for explaining an operation of a display device to which a mode switching function is applied according to an embodiment;
fig. 16 is a reference diagram for explaining an operation of a display device to which a mode switching function is applied according to an embodiment;
fig. 17 illustrates an example of a user interface that may be displayed on a display when a display device detects a power input, according to an embodiment;
fig. 18 is a flowchart illustrating a method of operating a display apparatus according to an embodiment.
FIG. 19 is a schematic block diagram of an electronic device 1900 that performs a startup using a wait time when a power down input is received according to an embodiment.
FIG. 20 is a view for explaining how to perform the process according to FIG. 19 reference is made to the figures for operation of electronic device 1900.
Detailed Description
Hereinafter, terms used in the specification will be briefly described, and embodiments will be described in detail.
All terms used herein including descriptive terms or technical terms should be interpreted as having meanings understood by those of ordinary skill in the art. However, these terms may have different meanings according to the intention of a person having ordinary skill in the art, precedent cases, or appearance of new technology. Further, some terms may be selected by the applicant, and in this case, the meaning of the selected terms will be described in detail in the detailed description of the embodiments. Therefore, the terms used herein must be defined based on the meanings of the terms as well as the description throughout the specification.
Furthermore, when a component "comprises" or "comprising" an element, the component may also comprise, without excluding, other elements, unless there is a particular description to the contrary. In the following description, terms such as "unit" and "module" indicate a unit for processing at least one function or operation, wherein the unit and the block may be implemented as hardware or software or by combining hardware and software.
Embodiments will now be described more fully with reference to the accompanying drawings. Embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the embodiments to those skilled in the art. In the following description, well-known functions or constructions are not described in detail since they would obscure the embodiments in unnecessary detail, and the same reference numerals are used throughout the drawings to designate the same or similar elements. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. Expressions such as "… …" modify the entire list of elements when followed by the list of elements, but do not modify individual elements of the list.
The term "user" in this specification means a person who controls a function or operation of the image display apparatus by using a control device or hardware input of the display apparatus, for example, and may include a viewer, an administrator, or an installation engineer.
Fig. 1 is a reference diagram for explaining a concept according to an embodiment.
When an operational error occurs during use of a Television (TV), the TV may be powered off, typically by pressing a hardware power key integrated with the TV or via a signal received from a remote controller of the TV when a user presses a power on/off key on the remote controller. Similarly, the TV may be powered on by pressing the hardware power key again or via a signal received from a remote controller of the TV. Thus, the TV can operate normally by restarting (power cycling) the TV. Alternatively, when the AC power of the TV is separated and the TV is restarted, for example, by disconnecting the power cable from the power supply apparatus, the TV may normally operate again.
However, there is a problem in that an operation error state is maintained when an instant start function or a suspend to RAM function is implemented within a TV, i.e., a user powers off the TV using a power key and then powers on the TV again. In particular, in the case of a third party application instead of a local application managed by the TV itself, it may be difficult to correct an error via the error recovery system of the TV itself.
The instant start function or the suspend to RAM function is a start method in which, when the TV receives an input to a power key during operation, software such as an application being operated stops the operation of a system clock while the software remains in a volatile memory (RAM) so that the application stored in the volatile memory (RAM) does not operate. And, when the remaining hardware components are turned off and then an input to the power key is received, the TV restores the operation of the system clock, so that the software code stored in the volatile memory (RAM) operates as loaded, thereby reducing the time for executing the software. The technique by which software remains in volatile memory utilizes the self-refresh technique provided by DRAM. The suspend to RAM technique is referred to as the S3 or deep sleep technique.
When a display device having an instant start function or a suspend to RAM function is powered off, the display device suspends power supply to most internal components including a display screen, but may supply a very small amount of power to a volatile memory storing an application being executed. By supplying a very small amount of power to the volatile memory, even in the power-off state of the display device, the display device can retain the application being executed in the display device in the volatile memory before the power-off operation. Preserving the contents of volatile memory by supplying a very small amount of power to the volatile memory even in a power-off state of the electronic device is referred to as suspending to RAM mode. When the power-on input is received, the display apparatus may execute an application that was being executed before a power-off operation of the display apparatus by using the application retained in the volatile memory when the display apparatus is started, and display an execution screen on the display. Accordingly, the user can confirm that the application being executed before the power-off operation of the display device is displayed on the display device together with the execution state of the application according to the power-on operation of the display device.
Referring to fig. 1, a display device may malfunction 10 during execution of an application. At this time, the user may perform the first power input 11 for operation recovery, power off 12 the display device, then perform the second power input 13, and power on 14 the display device. Thus, a soft restart occurs. However, since the instant start function or the suspend to RAM function of the display device maintains the state of the software stored in the volatile memories 100a, 100b, and 100c when the display device is powered off, when the display device is powered on again, the application may continue to be executed in such a software error state, and thus, the error may be maintained.
Even when the user performs the third power input 15 for error correction again, powers off the display device 16, performs the fourth power input 17 again, and powers on the display device 18, the display device having the instant-on function or the suspend-to-RAM function may be powered on in a state where the operation error is not corrected because the application in the error state stored in the volatile memories 100d and 100e is retained. When an error of the display device repeatedly occurs, there may be a problem in that a user is forced to finally separate the AC power from the display device and perform a hard or cold restart of the display device.
The present embodiment relates to a method performed by a display device having an instant-on function or a suspend-to-RAM function, which determines a power key input operation mode of a user, determines whether to cold-restart the display device at the next time, and automatically resumes an operating system of the display device. The cold start operation includes a cold power-off operation and then a start operation. In the cold power-off operation, power supply to the volatile memory in the display device is suspended, and thus the content stored in the volatile memory can be removed. Therefore, when the display apparatus is started, the display apparatus performs an initial operation by loading an operating system program stored in the non-volatile memory into the volatile memory.
Fig. 2 is a reference diagram for explaining an example of a system recovery method according to the embodiment.
Referring to fig. 2, the display device may malfunction 20 during execution of the application. That is, the volatile memory 200a of the display device may store the application being executed in an error state. At this time, the user may perform a first power input 21 for operation recovery, power down 22 the display device, and perform a second power input 23 for activating the display device. Assuming that the display device implements the instant start function, since the storage state of the volatile memory 200b is maintained, the application loaded in the volatile memory 200a may be stored in the volatile memory 200a in an error state. In other words, even if the display apparatus is turned off by the user, since the power supply to the volatile memory 200b is maintained, the full reset of the volatile memory 200b and the loaded application and its state stored in the volatile memory 200b is not performed. At this time, the display apparatus according to the embodiment may monitor the time from the first power input 21 to the second power input 23, i.e., the waiting time T1 after the display apparatus is powered off. When the second power input 23 is received, the display device may determine whether the monitored latency T1 corresponds to a predetermined pattern. Whether the waiting time T1 corresponds to the predetermined pattern may be determined according to, for example, whether the waiting time T1 is less than a predetermined threshold. When the waiting time T1 corresponds to the predetermined pattern, the display device may determine that an error has occurred in the display device, and may perform a cold start 24 for error recovery in which power supply to the volatile memory is suspended 24. Since the contents of the volatile memory 200c of the display device are erased by the cold start 24, the software error state of the volatile memory can be eliminated. Accordingly, when the application 25 is executed according to the user input after the cold start 24, the display apparatus may normally execute the application loaded in the volatile memory 200d and normally display the executed application 26 on the display.
Fig. 3 is a reference diagram for explaining an example of a system recovery method according to the embodiment.
Referring to fig. 3, the display device may malfunction 30 during execution of the application. At this time, the user may perform the first power input 31 for operation restoration, power off 32 the display device, and perform the second power input 33. According to the second power input 33, the display device may be instantly started 34 and may be restored in a state where the failed application is retained. Accordingly, the user may perform the third power input 35 again to power off the display device having the application in the failed state. At a time before the third power input 35, the volatile memories 300a, 300b and 300c of the display device may retain the application in the error state.
At this time, the display apparatus according to the embodiment may monitor the time from the first power input 31 to the second power input 33 (i.e., the waiting time T1 after power-off) and the time from the second power input 33 to the third power input 35 (i.e., the waiting time T2 after power-on). When the third power input 35 is received, the display device may determine whether at least one of the monitored waiting times T1 and T2 corresponds to a predetermined mode. That is, if the time between power inputs is fast enough, the display device may determine that a reset of the display device, in which the power supply of the volatile memory is suspended, is necessary.
According to an example, the display apparatus may determine whether the waiting times T1 and T2 correspond to a predetermined first mode and a predetermined second mode, respectively.
According to an example, the display apparatus may determine whether the waiting time T1 corresponds to a predetermined first mode or whether the waiting time T2 corresponds to a predetermined second mode.
According to an example, the display device may determine whether the waiting time T2 corresponds to a predetermined second mode.
When the waiting times T1 and T2 correspond to the predetermined first and second modes, respectively, the display device may determine that an error has occurred in the display device and perform the cold start 36 for error recovery. Because the software error state of the volatile memory 300d of the display device can be removed by the cold start 36 (in the cold start 36, the power supply of the volatile memory is suspended), when the fourth power input 37 requesting the execution of the application of the display device is received, the display device can load the requested application into the volatile memory 300e, reload and execute the application, and display 38 the application on the display. Thus, even though the application executed by the display device may be a non-native third party application for which the display device is not specifically configured to manage, an error condition of the application may be corrected.
Fig. 4 shows a schematic block diagram of the display apparatus 100 according to the embodiment.
Referring to fig. 4, the display device 100 may include a controller 110, a power supply 120, a memory 150, and a sensor 185, which may be coupled by one or more buses and wired connections.
The display apparatus 100 may be implemented as any one of various electronic apparatuses such as a television, a desktop PC, a handheld PA, a personal information terminal, and the like, but the display apparatus is not limited thereto. The display device may be any device having an instant-on function or a suspend-to-RAM function or the like, and the non-native application is installed in the display device.
The display apparatus 100 may operate in a power saving mode in the power management function. Specifically, the display apparatus 100 may operate in a suspend to RAM mode in the power management function. Suspend to RAM mode is one such mode: when the system enters a low power state, power to most components of the system is suspended, while power to the main memory, which is a volatile memory that stores system configuration information, applications being executed, and active files, is maintained. In suspend to RAM mode, the system may be kept at low power and most of the power required at this time may be used to retain data of the main memory, which may be a volatile memory. In suspend to RAM mode, the system can be woken up at any time to perform tasks, and therefore, system startup can be expedited because the load and execution state of applications in RAM is preserved.
The cold start refers to a process in which the display device is restarted. When the display device is turned on for the first time, the system undergoes a power-on self-test, and then the operating system is loaded into RAM, which may be volatile memory. When the operating system program is loaded into the RAM and executed without any exception, the display apparatus enters a state of accepting a user command, and thus the display apparatus is started. In this specification, it is assumed that the display device has a suspend to RAM function or an instant start function or any equivalent thereof. Thus, cold start may refer to cold powering off the display device while removing content stored in the volatile memory by suspending power to at least the volatile memory, and then powering on the display device.
The sensor 185 may comprise suitable logic, circuitry, interfaces and/or code that may sense user input. The user input may include a power input of the display apparatus 100. The power input of the display apparatus 100 may include an input indicating power-on and an input indicating power-off. The power input of the display apparatus 100 may be implemented in a switching manner. The second power input may indicate a power down when the first power input indicates a power up.
The power supply 120 may comprise suitable logic, circuitry, interfaces and/or code that may be capable of providing power to each functional block of the display apparatus 100 and typically to all functional blocks of the display apparatus 100. The power supply device 120 may supply power to each component of the display apparatus 100 according to an input indicating power-on of the display apparatus 100. The power supply device 120 may block or remove power supply to each component of the display apparatus 100 according to an input indicating power-off of the display apparatus 100. When the display apparatus 100 has the suspend to RAM function or the instant on function, the power supply device 120 may supply a very small amount of power to the volatile memory included in the memory 150 even when the display apparatus 100 is powered off, so that data stored in the volatile memory may be retained.
The memory 150 may include a volatile memory. Volatile memory is computer memory that requires electricity to retain stored information and refers to general purpose random access memory including Dynamic Random Access Memory (DRAM) and Static Random Access Memory (SRAM). Volatile memory can store data in operation according to a suspend to RAM function.
The controller 110 may comprise one or more processors and comprise suitable logic, circuitry, interfaces and/or code that may generally control the components of the display device 100.
According to an embodiment, the controller 110 may receive a power input of the display apparatus 100, and in response to receiving the power input, obtain one or more pieces of operation time information of the display apparatus 100 before the power input is received or one or more pieces of waiting time information of the display apparatus 100, determine whether to perform a cold start by using at least one of the one or more pieces of operation time information and the one or more pieces of waiting time information, and perform the cold start according to the determination. A plurality of pieces of operation time information of the display apparatus 100 may be stored in the memory 150, so that the plurality of pieces of operation time information of the display apparatus 100 may be retained and accessed even if the display apparatus 100 is restarted. Alternatively or additionally, the pieces of operation time information of the display apparatus 100 may be stored in a nonvolatile memory.
According to an embodiment, the power supply input may comprise a first power supply input and a second power supply input. The controller 110 may obtain first time information indicating a time from a first power input to a second power input in response to receiving the second power input, determine whether the first time information corresponds to a predetermined first mode, and determine whether to perform a restart of the display apparatus 100 according to a determination result.
According to the embodiment, the first time information may indicate a waiting time of the display apparatus 100 when the first power input is an input corresponding to power-off of the display apparatus 100 and the second power input is an input corresponding to power-on of the display apparatus 100, and the first time information may indicate an operation time of the display apparatus 100 when the first power input is an input corresponding to power-on of the display apparatus 100 and the second power input is an input corresponding to power-off of the display apparatus 100.
According to an embodiment, the controller 110 may determine that the first time information corresponds to a predetermined first pattern when the first time information is less than a first threshold.
According to an embodiment, the first threshold may be updatable by the server or may be updatable according to a result determined by machine learning.
According to an embodiment, the power inputs may comprise a first power input, a second power input and a third power input. The controller 110 may obtain first time information indicating a time from the first power input to the second power input and second time information indicating a time from the second power input to the third power input in response to receiving the third power input, it is determined whether the first time information and/or the second time information corresponds to a predetermined first mode and/or a predetermined second mode, and it is determined whether to perform further cold start of the display apparatus 100 in which power supply to the memory is suspended according to the determination.
According to an embodiment, when it is determined that the first time information is less than the first threshold and the second time information is less than the second threshold, the controller 110 may determine to perform a cold start in which power supply to the memory is suspended.
According to an embodiment, when it is determined that the first time information is less than the first threshold value or the second time information is less than the second threshold value, the controller 110 may determine to perform a cold start in which power supply to the memory is suspended.
According to an embodiment, the power supply input may comprise a first power supply input and a second power supply input. The controller 110 may switch to an information mode for displaying information on the display in response to a first power input and switch to a normal mode for displaying broadcast content on the display in response to a second power input.
Fig. 5 illustrates a detailed block diagram of the display apparatus 100 according to the embodiment.
Referring to fig. 5, the display apparatus 100 may include a controller 110, a power supply 120, a memory 150 including a volatile memory 130 and a non-volatile memory 140, a video processor 160, a display 165, an audio processor/output interface 170, a tuner 175, a communicator 180, a sensor 185, and an input/output interface 190.
The same description as that described with reference to fig. 4 will be omitted.
As in fig. 4, the display apparatus 100 according to the embodiment may be a TV, but this is only an embodiment and may be implemented in an electronic apparatus including a display. For example, the display apparatus 100 may be implemented in various electronic devices, such as a mobile phone, a digital camera, a camcorder, a laptop computer, a tablet PC, a desktop computer, an electronic book terminal, a digital broadcasting terminal, a Personal Digital Assistant (PDA), a Portable Multimedia Player (PMP), a navigation system, an MP3 player, a wearable device, and the like.
The video processor 160 may comprise suitable logic, circuitry, interfaces and/or code that may enable processing of video data received by the display device 100. The video processor 160 may perform various image processing such as decoding, scaling, noise filtering, frame rate conversion, resolution conversion, and the like on the video data.
The display 165 may display a video included in a broadcast signal received through the tuner 175 on a screen under the control of the controller 110. In addition, the display 165 can display content (e.g., a moving image) input by the communicator 180 or the input/output interface 190. The display 165 may output the image stored in the memory 150 under the control of the controller 110.
The display 165 may comprise suitable logic, circuitry, interfaces and/or code that may enable the generation of drive signals by converting video signals, data signals, on Screen Display (OSD) signals, control signals and the like that may be processed by the controller 110. The display 165 may be implemented as one of a Plasma Display Panel (PDP), a Liquid Crystal Display (LCD), an Organic Light Emitting Display (OLED), a flexible display, etc., and may also be implemented as a three-dimensional (3D) display. The display 165 may be configured to be used as touch screens for both output and input devices.
The audio processor/output interface 170 may comprise suitable logic, circuitry, interfaces and/or code that may enable processing of audio data. The audio processor/output interface 170 may perform various processing on the audio data, such as decoding and amplification of the audio data, noise filtering, and the like. Further, the audio processor/output interface 170 may include at least one of a speaker for outputting processed audio, a headphone output terminal, or a sony/philips digital interface (S/PDIF) output terminal.
The tuner 175 may comprise suitable logic, circuitry, interfaces and/or code that may enable tuning and selection of a frequency at which a user selects a channel to be received via the apparatus 100, wherein the frequency may be obtained by tuning, amplifying, mixing and resonating frequency components of a broadcast signal received in a wired or wireless manner. The broadcast signal includes an audio signal, a video signal, and additional information (e.g., an Electronic Program Guide (EPG)).
The communicator 180 may comprise suitable logic, circuitry, interfaces and/or code that may enable the display device 100 to be communicatively coupled to external devices (e.g., audio devices, etc.) under the control of the controller 110. The controller 110 may transmit and receive contents to and from an external device connected through the communicator 180, download an application from the external device, or browse the internet. The communicator 180 may include a wireless LAN interface, a bluetooth interface, a BLE interface, an NFC interface, a wired ethernet interface, etc. corresponding to the performance and structure of the display device 100. In addition, the communicator 180 may receive a control signal of a remote control device under the control of the controller 110. The control signal may be implemented as a bluetooth type, an RF signal type, or a WiFi type.
The sensor 185 may comprise suitable logic, circuitry, interfaces and/or code that may sense a user's voice, a user's image or a user's interaction, and may include a microphone, a camera and an optical receiver. The optical receiver may receive optical signals (including control signals) received from an external remote control device, to power on/off the display apparatus 100. For example, the optical receiver may receive a power-on input or a power-off input of the display apparatus 100 from an external remote control apparatus.
The input/output interface 190 may comprise suitable logic, circuitry, interfaces and/or code that may enable receiving video (e.g., moving images), audio (e.g., voice and music) and additional information (e.g., EPG, etc.) from outside the display device 100 under the control of the controller 110. The input/output interface 190 may include one or a combination of a high-definition multimedia interface (HDMI) port, a component jack, a PC port, and a USB port.
The memory 150 may comprise suitable logic, circuitry, interfaces and/or code that may enable storage of various data, programs or applications for driving and controlling the display device 100 under control of the controller 110. For example, applications, programs, and/or data may be stored in the non-volatile memory 140 and loaded into the volatile memory 130 for execution by the controller 110. The memory 150 may store input/output signals or data corresponding to driving of each component of the display device 100.
The memory 150 may store an operating system for controlling operations of the image display device and the controller 110, a native application initially provided by a manufacturer or downloaded from an external source, a non-native application downloaded from an external source, a Graphical User Interface (GUI) related to an application, an object (e.g., an image, text, an icon, a button, etc.) for providing a GUI, user information, a document, a database, or related data.
The memory 150 may include volatile memory 130 and non-volatile memory 140.
The volatile memory 130 refers to a memory that retains stored information only in a state where power supply is maintained and may include DRAM, SRAM, and the like.
The non-volatile memory (NVM or NVRAM) 140 is a computer memory that continuously retains stored information even when power is not supplied thereto, and may include a ROM, a flash memory, a memory card (e.g., a micro SD card and a USB memory), a Hard Disk Drive (HDD), or a Solid State Drive (SSD).
The volatile memory 130 may store input/output data related to an application system loaded when the system is started, one or more application programs being executed, and execution of the application. When the suspend to RAM function is implemented by the display apparatus 100, since power is kept supplied to the volatile memory 130 when the display apparatus 100 is powered off, the contents of the volatile memory 130 can be continuously retained even during the power off of the display apparatus 100, and thus the processor can retrieve and execute the contents stored in the volatile memory 130 when the display apparatus 100 is powered on. When the display apparatus 100 is powered on or performs a restart after a cold (hard) power-off because power to the volatile memory 130 is interrupted or suspended, stored contents are not retained in the volatile memory 130 and thus errors in stored applications may also be removed when the display apparatus 100 is powered on or performs a restart after a cold (hard) power-off.
According to an embodiment, the memory 150 may include a power management module and a latency/operating time management module.
The power management module may include one or more instructions to obtain one or more pieces of operation time information of the display apparatus 100 before receiving a power input or one or more pieces of latency information of the display apparatus 100, determine whether to perform a cold start by using at least one of the one or more pieces of operation time information and the one or more pieces of latency information in response to receiving the power input, and control the cold start according to the determination. More specifically, the power management module may include one or more instructions for performing the functions of the controller 110 described above with reference to fig. 4.
The latency/operation time management module may manage and acquire operation time information indicating a time from power-on to power-off of the display apparatus 100 and latency information indicating a time from power-off to power-on of the display apparatus 100.
The controller 110 may comprise one or more processors and may comprise suitable logic, circuitry, interfaces and/or code to control the general operation of the display device 100 and the flow of signals between internal components of the display device 100 and to perform functions that process data. When there is a user input or predefined and stored conditions are satisfied, the controller 110 may execute an Operating System (OS) and various applications stored in the memory 150.
According to an embodiment, the controller 110 may perform various operations according to embodiments disclosed herein by executing one or more instructions included in the power management module and the latency/operating time management module to be stored in the memory 150.
In addition, the block diagram of the display apparatus 100 is a block diagram for the embodiment. May be integrated according to the specifications of the actual implementation of the display device 100 each component of the block diagrams is added or omitted. That is, two or more components may be combined into one component or one component may be divided into two or more components as necessary. Further, the functions performed in each block are intended to illustrate the embodiments, and the specific operation or device does not limit the scope of the present disclosure.
Fig. 6 is a flowchart illustrating a method of operating a display apparatus according to an embodiment. Fig. 7 is a reference diagram for explaining a waiting time and an operation time before power is input according to the embodiment.
In operation S610, the display apparatus may receive a power input.
The power input may be an input indicating that the display device is powered on or an input indicating that the display device is powered off.
In operation S620, in response to receiving a power input, the display device may obtain one or more pieces of operation time information of the display device or one or more pieces of waiting time information of the display device.
The operation time information may indicate a time from when the display device is powered on to when the display device is powered off, and indicate a time in a state where the display device is turned on. The waiting time information may indicate a time from when the display device is powered off to when the display device is powered on again, and may indicate a time in a state where the display device is turned off. That is, the operation time or wait time may indicate a time from a time when a certain power input is received to a time when a next power input is received.
Referring to fig. 7, when the power input received in operation S610 is the current power input 740, the previous first power input 710, the previous second power input 720, and the previous third power input 730 are detected and information thereof is stored before the current power input 740 is received. The time between the previous first power input 710 and the previous second power input 720 may represent the latency 750. The time between the previous second power input 720 and the previous third power input 730 may represent an operation time 760. The time between the previous third power input 730 and the current power input 740 may represent a wait time 770.
Upon receiving the current power input 740, the display device may obtain one or more operational times 760 of the display device or one or more waiting times 750 and 770 of the display device that have occurred in the past prior to receiving the current power input 740.
The number of information to be obtained by the display device among the operation time information and the waiting time information that have been stored before the display device receives the current power input 740 may be appropriately considered according to the policy of the display device. For example, the display device may use only the information on the waiting time 770 before receiving the current power input 740, or may use the information on the operation time 760 and the information on the waiting time 770, or both the information on the waiting times 750 and 770 and the information on the operation time 760, or may use the operation time information or the waiting time information before the information on the waiting times 750 and 770 and the information on the operation time 760.
Returning to fig. 6, the display apparatus may determine whether to perform a cold start by using at least one of the obtained one or more pieces of operation time information and one or more pieces of waiting time information in operation S630.
The display apparatus may determine whether to perform the cold start by determining whether the obtained operation time information/waiting time information corresponds to a predetermined mode. That is, when the obtained operation time information/wait time information corresponds to the predetermined mode, the display apparatus may determine to perform a cold start in which power supply to the volatile memory is suspended, and may determine not to perform the cold start when the obtained operation time information/wait time information does not correspond to the predetermined mode.
According to an example, the operation time information/latency information corresponds to a predetermined pattern, which means that the operation time/latency is less than a predetermined threshold. That is, when the operation time or the waiting time existing before the current power input is less than a certain threshold, it is predicted that the user may not normally use the display device, but may repeatedly turn off and on the display within a short period of time due to an error that has occurred in the display device, and thus it is determined that an error, for example, due to an erroneously executed application has occurred in the display device.
The predetermined pattern may be determined according to the number of operation time information/waiting time information to be compared. Further, the threshold used in the predetermined mode may be determined or updated in various ways by the manufacturer of the display device, the user of the display device, or through machine learning.
In operation S640, the display apparatus may perform a cold start according to the determination.
The display apparatus may perform a cold start according to the determination in operation S630. In this regard, since the display device removes the contents of the volatile memory through cold (hard) power-off of the display device, software or applications in which an error may occur in the volatile memory of the display device may no longer be stored in the volatile memory.
Fig. 8 is a reference diagram for explaining various user modes recognized for determining whether a cold start is required when the display apparatus receives a power key input according to an embodiment.
Referring to fig. 8, 810 indicates a time T1 between a first power input indicating power-off and a second power input indicating power-on, a time T2 between the second power input indicating power-on and a third power input indicating power-off, and a time T3 between the third power input indicating power-off and a fourth power input indicating power-on in a power-on state of the display apparatus. In 810, T1 may represent a waiting time from power-off to next power-on of the display device, T2 may represent a usage time from power-on to next power-off of the display device, and T3 may represent a waiting time from power-off to next power-on of the display device.
According to an example, the times T1 and T2 may be measured as follows.
In a display device such as a TV, a microcomputer always waits for receiving a remote control input even during a TV off operation. When the TV is turned off, the microcomputer can count the TV turn-off time by using the internal time information or the internal counter. Then, when the TV is powered on, the module that checks the waiting time after the power off by the microcomputer may request and receive the waiting time from the microcomputer, thereby calculating the time T1. Further, when an operation of only closing the panel during the TV-off operation without closing the main CPU is added, the time T1 can be calculated by including such an operation in the time T1. Since the CPU operates after the TV is turned on from the off state, the time T2 during which the TV is turned on can be calculated using the time information provided by the OS without the help of the microcomputer.
In 810 of fig. 8, a first power input is an input indicating that power is off in a power-on state of the display device. However, as in 820 of FIG. 8, the first power input may be an input indicating that power is on in a powered off state of the display device. For example, although a system error occurs in a TV on state, a user may not make a power-off input for error recovery, but the TV may be in a power-off state. In this case, when the user performs the power-on input later, the TV may need to recover the error in this case because the TV may still be in an error state.
In fig. 8, 820 indicates a time T1 between a first power input indicating power-on and a second power input indicating power-off, a time T2 between the second power input indicating power-off and a third power input indicating power-on, and a time T3 between the third power input indicating power-on and a fourth power input indicating power-off in a power-off state of the display apparatus. In 820, T1 may represent a usage time from power-on to next power-off of the display device, T2 may represent a waiting time from power-off to next power-on of the display device, and T3 may represent a usage time from power-on and next power-off of the display device.
The display apparatus may determine whether cold start of the display apparatus is necessary by using one of the time information T1, T2, and T3 or a combination of one or more of them.
According to the embodiment, the display apparatus may determine whether the time information T1 corresponds to a predetermined first mode to determine whether a restart of the display apparatus is necessary.
According to an embodiment, the display apparatus may determine whether the time information T2 corresponds to a predetermined second mode, to determine whether a cold start of the display device is necessary.
According to the embodiment, the display apparatus may determine whether the time information T3 corresponds to a predetermined third mode to determine whether a cold start of the display apparatus is necessary.
According to the embodiment, the display apparatus may determine whether the time information T1 and the time information T2 correspond to the predetermined first mode and the predetermined second mode, respectively, to determine whether the cold start of the display apparatus is necessary.
According to the embodiment, the display apparatus may determine whether the time information T1 corresponds to a predetermined first mode or the time information T2 corresponds to a predetermined second mode to determine whether a cold start of the display apparatus is necessary.
According to the embodiment, the display apparatus may determine whether the time information T2 and the time information T3 correspond to the predetermined second mode and the predetermined third mode, respectively, to determine whether the cold start of the display apparatus is necessary.
According to the embodiment, the display apparatus may determine whether the time information T2 corresponds to a predetermined second mode or the time information T3 corresponds to a predetermined third mode, to determine whether a cold start of the display device is necessary.
According to an embodiment, the display apparatus may determine whether the time information T1, T2, and T3 correspond to a predetermined first mode, a predetermined second mode, and a predetermined third mode, respectively, to determine whether cold start of the display apparatus is necessary.
According to an embodiment, the first mode, the second mode, and the third mode may be experimentally determined and preset in the display device product.
According to the embodiment, the first mode, the second mode, and the third mode set in the display apparatus may be updated by a user selection, or the first mode, the second mode, and the third mode set in the display apparatus may be updated by receiving an updated value via the server.
According to the embodiment, the first mode, the second mode, and the third mode set in the display device may be updated by the display device analyzing and learning the behavior pattern of the user. In an example, the first, second, and third modes may be updated by Artificial Intelligence (AI) based machine learning. The AI system is a computer system with human-level intelligence. In addition, unlike existing rule-based intelligent systems, the AI system is a system that trains, decides, and becomes more and more intelligent by itself. According to the use of the AI system, the existing rule-based intelligent system has been gradually replaced by the deep learning-based AI system because the recognition rate of the AI system can be improved and thus the AI system can more accurately understand the user preference. AI techniques refer to machine learning (deep learning) and element techniques that utilize machine learning. Machine learning is an algorithmic technique that classifies/learns the features of input data by itself. The element technology is a technology for simulating functions of the human brain such as recognition and judgment by using a machine learning algorithm and is composed of technical fields such as language understanding, visual understanding, inference/prediction, knowledge representation, and motion control.
Fig. 9 illustrates an example in which a display apparatus determines whether a cold start is required using time information according to an embodiment.
Referring to fig. 9, in a power-on state of the display device, the display device may cause one or more applications to be loaded into the volatile memory through a processor or controller executing the one or more applications. One or more applications loaded into volatile memory may be in an error state (900 a).
The display apparatus may perform power-off upon receiving a first power input for power-off in a power-on state of the display apparatus. At this time, even when the display device to which the suspend to RAM function is applied receives the first power input indicating the power-off, one or more erroneously executed applications stored in the volatile memory during the power-off of the display device may be retained because the contents of the volatile memory are retained (900 b). Thereafter, upon receiving the second power input for power-on of the display apparatus, the display apparatus may perform a start-up operation in response to receiving the second power input for power-on of the display apparatus.
Then, the display apparatus according to the embodiment may confirm the time T1 from the first power input to the second power input and determine whether to perform the cold start according to whether T1 corresponds to a predetermined first mode (930).
When T1 does not correspond to the predetermined first mode, for example, when T1 is greater than a predetermined first threshold, the display device predicts that there is no problem in the display device. Therefore, the display apparatus determines not to perform any additional operation based on T1, and normally performs an operation, such as waiting to receive some user input and performing an operation corresponding to the user input.
When T1 corresponds to a predetermined first mode, the display apparatus may determine a cold start of the display apparatus. For example, when T1 is less than or equal to a predetermined first threshold, that is, when it is determined that the waiting time of the display apparatus is less than or equal to a predetermined threshold, the display apparatus may determine cold start of the display apparatus. In other words, the short-latency prediction user of the display device does not normally use the display device, but finds an error in the operation of the display device and performs operations of turning off and on the display device for error recovery.
The display device may be cold powered down to perform a cold start. In this case, the power supply of the volatile memory may also be stopped to reset the volatile memory, thereby completely removing the contents of the volatile memory (900 c). As described above, the display apparatus may remove one or more applications, in which an error may occur, from the volatile memory by performing a cold start that suspends power supply to the volatile memory.
The display apparatus performing the cold start 930 may display a broadcast signal according to the normal TV mode on the display 165. That is, since one or more applications previously stored in the volatile memory are removed by the cold start 930, the display apparatus may display a normal broadcast signal instead of displaying a previously executed application in which an error may occur after the cold start is performed.
Fig. 10 illustrates an example in which a display apparatus determines whether a cold start is required using time information according to an embodiment.
Referring to fig. 10, in a power-off state of the display device, the display device may have one or more applications stored in a volatile memory. One or more applications stored in volatile memory may be in an error state (1000 a). For example, when an error occurs during use of a previous display device and a user turns off the display device without taking any action for error recovery, the display device may still maintain an erroneous state of the application.
The display apparatus may perform power-on upon receiving a first power input 1010 for power-on in a power-off state of the display apparatus. At this time, the display apparatus to which the suspend to RAM function is applied may display an application execution image on the display by using one or more applications reserved in the volatile memory according to the power-on command (1000 b). Thereafter, upon receiving a second power input 1020 indicating a power-off of the display device, the display device may perform the power-off.
At this time, the display apparatus according to the embodiment may confirm the time T1 from the first power input to the second power input according to the reception of the second power input 1020, and determine whether to perform the cold start according to whether T1 corresponds to a predetermined first mode (1030).
When T1 does not correspond to the predetermined first mode, for example, when T1 is greater than a predetermined first threshold, the display device predicts that there is no problem in the display device. Accordingly, the display device determines not to perform the cold start, and performs the power off according to the second power input 1020 instructing to power off the display device.
When T1 corresponds to a predetermined first mode, the display apparatus may determine a cold start of the display apparatus. For example, when T1 is less than or equal to a predetermined first threshold, that is, when it is determined that the usage time of the display device is less than or equal to the predetermined first threshold, the display device may determine the restart of the display device. In other words, the short usage time of the display device predicts that the user does not normally use the display device, but finds an error in the operation of the display device and performs operations of turning off and on the display device for error recovery.
The display device may be powered off to perform a cold start. In this case, the power supply of the volatile memory may also be stopped to initialize the volatile memory, thereby completely removing the contents of the volatile memory (1000 c). As described above, the display apparatus may remove one or more applications, in which an error may occur, from the volatile memory by performing a cold boot.
The display device performing the cold start 1030 may display a broadcast signal on the display 165 according to a normal TV mode. That is, since one or more applications previously stored in the volatile memory are removed through the cold start 1030 (in the cold start 1030, power supply to the memory is suspended), the display apparatus may display a normal broadcast signal instead of displaying a previously executed application in which an error may occur after the restart is performed.
Alternatively, a display device performing the cold start 1030 according to another embodiment may maintain a standby restart state. The standby restart state is the same as the restart state of the display device, but only the display of the display device is turned off. Accordingly, since only the display is turned off and other components such as a processor or a volatile memory are turned on, the display device in the standby restart state can be quickly operated upon receiving a user input.
Fig. 11 illustrates an example in which a display apparatus according to an embodiment determines whether a cold start is required using a plurality of time information.
Referring to fig. 11, in a power-on state of the display apparatus, the display apparatus may cause one or more applications to be loaded in the volatile memory by executing the one or more applications. One or more applications loaded in volatile memory may be in an error state (1100 a).
The display apparatus may perform power-off upon receiving the first power input 1110 for power-off in a power-on state of the display apparatus. At this time, even when the display device to which the suspend to RAM function is applied receives the first power input indicating the power-off, one or more erroneously executed applications stored in the volatile memory during the power-off of the display device may be retained because the contents of the volatile memory are retained (1100 b). Thereafter, upon receiving the second power input 1120 for power-on of the display device, the display device may perform power-on.
The display device may receive the third power input 1130 after powering on the display device by receiving the second power input 1120.
At this time, the display apparatus according to the embodiment may confirm a time T1 from the first power input 1110 to the second power input 1120 and a time T2 from the second power input 1120 to the third power input 1130, and perform the cold start 1140 when the time T1 and the time T2 correspond to the predetermined first mode and the predetermined second mode, respectively.
According to an example, the display apparatus may determine whether to perform the cold start by determining whether the time information T1 and T2 correspond to predetermined first and second modes, respectively. For example, the display device may determine a cold start of the display device when T1 is less than or equal to a predetermined first threshold and T2 is less than or equal to a predetermined second threshold. That is, when the waiting time T1 of the display device and the use time T2 of the display device after the waiting time T1 are short, it is predicted that the user does not use the normal display device, but finds an error in the operation of the display device and performs the operation of turning off and on the display device for error recovery.
According to another example, the display apparatus may determine whether any one of the time information T1 and T2 corresponds to a predetermined first mode and second mode to determine the restart. For example, the display device may determine the restart of the display device when T1 satisfies a predetermined first threshold, T2 satisfies a predetermined second threshold, or only one of the two conditions is satisfied.
The display device may be powered off to perform a cold start. In this case, power to the volatile memory may also be stopped to reset the volatile memory, thereby completely removing the contents of the volatile memory (1100 c). As described above, the display apparatus may remove one or more erroneous applications, in which an error may occur, from the volatile memory by performing a reboot in which power supply to the memory is suspended.
The display device performing the cold start 1140 may display a broadcast signal on the display 165 according to the normal TV mode. That is, since one or more applications previously stored in the volatile memory are removed by the cold start 1140, the display apparatus may display a normal broadcast signal instead of displaying a previously executed application in which an error may occur after the cold start is performed.
Alternatively, a display device performing the cold start 1140 according to another embodiment may maintain a standby restart state.
In the example shown in fig. 11, the first power input is received in a power-on state of the display device. However, in the case of using T1/T2, the first power input may be received in a power-off state of the display device as in fig. 10.
Fig. 12 illustrates an example in which a display apparatus according to an embodiment determines whether a cold start is required using a plurality of time information. The example shown in fig. 12 is the same as the example shown in fig. 11 except for the time for determining the cold start.
Referring to fig. 12, in a power-on state of the display device, the display device may receive a first power input 1210, a second power input 1220, and a third power input 1230. The display device may be in the states 1200a and 1200b in which one or more applications are stored in volatile memory prior to receiving the third power input 1230.
In the example shown in fig. 11, the display apparatus determines whether to cold start the display apparatus after receiving the third power input, whereas in the example shown in fig. 12, the display apparatus may determine whether to cold start the display apparatus after receiving the fourth power input 1240 (instead of the third power input 1230).
At this time, the display apparatus according to the embodiment may confirm the time T1 from the first power input 1210 to the second power input 1220 and the time T2 from the second power input 1220 to the third power input 1230, and may perform the cold start 1250 when the time T1 and the time T2 correspond to the predetermined first mode and the predetermined second mode, respectively. The operation of determining whether to perform the cold start using the time T1 and the time T2 is the same as that in fig. 11, and thus further explanation is omitted.
Fig. 13 illustrates an example in which the display apparatus determines whether a cold start is required using time information according to an embodiment. The example shown in fig. 13 is the same as the example shown in fig. 12, except that T1, T2 and T3 are further considered.
Referring to fig. 13, in a power-on state of the display device, the display device may receive a first power input 1310, a second power input 1320, a third power input 1330, and a fourth power input 1340. The display device may be in a state 1300a and 1300b in which one or more applications remain in volatile memory during the reboot prior to receiving the fourth power input 1340.
Upon receiving the fourth power input 1340, the display device according to the embodiment may confirm a time T1 from the first power input 1310 to the second power input 1320, a time T2 from the second power input 1320 to the third power input 1330, and a time T3 from the third power input 1330 to the fourth power input 1340, and may perform a cold start 1350 when the time T1, the time T2, and the time T3 correspond to predetermined first, second, and third modes, respectively.
According to an example, the display apparatus may determine the cold start by determining whether the time information T1, T2, and T3 correspond to predetermined first, second, and third modes, respectively.
According to another example, the display apparatus may determine the cold start by determining whether a combination of one or more of the time information T1, T2, and T3 corresponds to the first mode, the second mode, and the third mode, respectively.
The display device performing the cold start 1350 may display a broadcast signal on the display 165 according to the normal TV mode. That is, because one or more applications previously stored in the volatile memory are removed by the cold start 1350 in which power supply to the volatile memory is suspended, the display apparatus may display a normal broadcast signal instead of displaying a previously executed application in which an error may occur after performing the cold start.
Alternatively, a display device performing the cold start 1350 according to another embodiment may maintain a standby restart state.
Hereinafter, an example of applying the embodiment to a display device to which switching between an information mode and a normal mode is applied will be described with reference to fig. 14 to 16.
In the normal display device, power-on of the display device and power-off of the display device are switched according to the power input button. Accordingly, when the power input button is pressed in the power-on state of the display device, the display device may be powered off, and when the power input button is pressed again in the power-off state of the display device, the display device may be powered on.
In the display device to which the "information mode/normal mode switching function" is applied, power on/off of the display device may not be switched according to the power input button, but the information mode/normal mode of the display device may be switched. That is, when the power input button is pressed in a normal mode in which the display device is normally used, the normal mode of the display device may be switched to the information mode by executing a predetermined application or widget set to be executed in response to a power input. In the information mode, the display device may display information such as weather or display images such as a gallery. When the power input button is pressed in the information mode of the display device, the display device may be switched to the normal mode. In the normal mode, an application displaying the broadcast content may be executed to display the broadcast content. When a power input is received again during execution of an application displaying broadcast content in the normal mode, execution of the application displaying broadcast content may be suspended, and a predetermined application or widget set to be executed in response to the power input may be executed.
When the information mode/normal mode switching function is applied to the display apparatus, it may be difficult to resume normal operation when there is an erroneous application in the display apparatus because the display apparatus is not turned off according to the power input button.
Fig. 14 is a reference diagram for explaining an operation in the display device to which the information mode/normal mode switching function is applied according to a power input.
Referring to fig. 14, a display device may display a broadcast signal or may execute one or more applications in a normal mode 1410 of the display device. Further, when the display device is executing one or more applications, an error may occur in the one or more applications. Thus, the volatile memory may be in a state 1400a storing one or more applications 1460 having errors, and the one or more applications may also be displayed in the error state on a display of the display device.
At this time, the user may press the first power input button to restore the error state, and the display apparatus may receive the first power input 1420. In response to receiving the first power input 1420, the display device may switch the display mode from the normal mode 1410 to the information mode 1430. That is, the display apparatus may load one or more applications 1470 corresponding to the information mode 1430 into the volatile memory and execute the applications corresponding to the loaded information mode 1430 to display the application execution image on the display. The volatile memory may be in a state 1400b where one or more applications 1460 having errors and one or more applications 1470 corresponding to the information schema 1430 are stored.
When the user presses the second power input button again, the display apparatus may receive the second power input 1440, and the display apparatus may switch the display mode from the information mode 1430 to the normal mode 1450. That is, the display apparatus may display and execute one or more applications 1460 executed in the broadcast display mode before the information mode 1430 in the state 1400c of the volatile memory. However, because one or more applications 1460 executed in the previous normal mode 1410 are in an error state, the display device may still be forced to display the wrong application.
Since the display device to which the information mode/normal mode switching function is applied is not turned off even by power input, even when an error occurs in an application executed in the display device, it is not easy to recover such an error.
Fig. 15 is a reference diagram for explaining an operation of the display apparatus to which the information mode/normal mode switching function is applied according to the embodiment.
Referring to fig. 15, the operation of the display apparatus shown in fig. 15 before the second power input 1440 is received is the same as the example shown in fig. 14.
When the display device in the information mode state receives the second power input 1440, the display device may confirm a time from the first power input 1420 to the second power input 1440 (i.e., a time during which the display device is in the information mode), and when the time corresponds to a predetermined first mode, may determine a cold start of the display device.
That is, when the time for which the display device maintains the information mode of the display device is shorter than, for example, the first threshold time, it can be predicted that the user does not normally use the display device but an error occurs in the display device for any reason. Accordingly, when the time from the first power input 1420 to the second power input 1440 corresponds to a predetermined first mode because the first power input 1420 is received, the display device may determine a cold start of the display device. Upon determination of a cold start, the display device may cold power down the display device and may restart the display device, including discontinuing power to the volatile memory. Content stored in the volatile memory of the display device may be completely removed by the display device being powered down so that the volatile memory of the display device may be in a new initialized state 1500c after a cold start. Accordingly, since the error application 1460 stored in the volatile memory is erased, the display device can receive and display a predetermined broadcast signal after being restarted.
Fig. 16 is a reference diagram for explaining an operation of the display apparatus to which the information mode/normal mode switching function is applied according to the embodiment.
In the example shown in fig. 15, only T1 is used when determining whether to cold-restart the display apparatus, whereas in the example shown in fig. 16, T1 and T2 are considered when determining whether to cold-restart the display apparatus.
Referring to fig. 16, the display device may display a broadcast signal or may execute one or more applications in a normal mode 1610 of the display device. Further, when the display device is executing one or more applications, an error may occur in the one or more applications. Thus, the volatile memory may be in a state 1600a where the one or more applications 1680 storing the error are also in an error state and the one or more applications may also be displayed on a display of the display device in the error state.
At this time, the user may press the first power input button to restore the error state, and the display apparatus may receive the first power input 1620. In response to receiving the first power input 1620, the display device may switch the display mode from the normal mode 1610 to the information mode 1630. That is, the display apparatus may load one or more applications 1690 corresponding to the information mode 1630 into the volatile memory and execute the applications corresponding to the loaded information mode 1630 to display the application execution image on the display. The volatile memory may be in a state 1600b where one or more applications 1680 having an error and one or more applications 1690 corresponding to the information pattern 1630 are stored.
When the user presses the second power input button again, the display device may receive the second power input 1640, and the display device may switch the display mode from the information mode 1630 to the normal mode 1650. That is that is to say that the first and second electrodes are, the display device may display and execute one or more applications 1680 executed in the normal mode 1610 prior to the information mode 1630 in the state 1600c of the volatile memory. However, because one or more applications 1680 executed in the previous normal mode 1610 are in an error state, the display device may still be forced to display the wrong application.
When the display device in the normal mode state receives the third power input 1660, the display device may confirm a time from the first power input 1620 to the second power input 1640 (i.e., a time T1 during when the display device is in the information mode 1630) and a time from the second power input 1640 to the third power input 1660 (i.e., a time T2 during when the display device is in the normal mode 1650), determine whether the time information T1 and the time information T2 correspond to the predetermined first mode and the predetermined second mode, respectively, and determine cold start of the display device according to a result of the determination. The method of determining whether the time information T1/T2 corresponds to the predetermined first mode/second mode may be variously determined as described with reference to fig. 11.
That is, when the time T1 for the display device to maintain the information mode 1630 of the display device and the time T2 for the display device to maintain the normal mode 1650 are shorter than the first threshold time/second threshold time, respectively, it can be predicted that the user does not normally use the display device but an error occurs in the display device for any reason. Accordingly, the display device may determine a cold boot of the display device to clear the contents of the volatile memory. Upon determination of a cold start, the display device may cold power down the display device and may restart the display device. The content stored in the volatile memory of the display device may be completely removed by powering down the display device so that the volatile memory of the display device may be in a new initialization state 1600d after a cold start. Thus, because the erroneous application 1680 and the one or more applications 1690 stored in the volatile memory are erased, the display device may again load 1600e the one or more applications 1690 into the volatile memory after a cold start and display 1670 the one or more applications 1690 on the display.
Fig. 17 illustrates an example of a user interface 1700 that may be displayed on a display when a display device detects a power input, according to an embodiment.
When the display device detects a power input, determines whether to cold-restart the display device, and determines to perform a cold start operation of the display device, the display device may output a user interface 1700 as shown in fig. 17 and ask a user whether the user wishes to restart the operation before starting the cold start operation.
Referring to fig. 17, a user interface 1700 displayed on a display device may include < power input detected. A restart mode for system error recovery and a fast mode for fast start at power-on > are selected, and a restart mode entry 1710 and a fast mode entry 1720 are also included. In response to selection of the resume mode item 1710, the display device may remove the contents of the volatile memory by performing a cold start operation of the display device, and in response to selection of the fast mode item 1720, may perform power down while maintaining power supply to the volatile memory according to the suspend to RAM function.
According to an embodiment, the display apparatus may determine whether a cold start of the display apparatus is necessary by using a length of a waiting time or an operating time before a power input. However, although the display device determines to restart the display device because of a short waiting time or operation time caused by some reasons before the power input, an error of the display device may not actually occur, but the waiting time or operation time may be short due to a problem of user manipulation. In view of this, the display apparatus can prevent the user from starting an unwanted cold start operation by outputting a user interface 1700 as shown in fig. 17 and confirming an intention to the user before starting an actual cold start.
Fig. 18 is a flowchart illustrating a method of operating a display apparatus according to an embodiment.
Referring to fig. 18, an error may occur during the operation of the display apparatus in operation S1810. For example, an application executed by a display device may enter an error state.
In operation S1811, the user may separate the AC power for error recovery of the display device.
In operation S1812, the disconnection of the AC power may cause a cold (hard) start or reset of the display device.
The activation is to turn on the display device to an initial state in which it can be used. When the display device is turned on, the system goes through power-on self-test, and then the operating system is read into the RAM as a volatile memory. When the operating system program is loaded into the RAM without any abnormality, the display apparatus enters a state of accepting a user command, which indicates that the display apparatus is started. The start-up by power switching or resetting is called cold (hard) start-up. Since the contents of the volatile memory of the display device are completely removed by the cold start, errors of the application or software stored in the volatile memory can be eliminated. Accordingly, an error of the display apparatus can be recovered.
In operation S1820, when an error occurs during the operation of the display device, the user may input a power key. For example, the display device may receive a power-off input through a user input provided on the display device, or may receive a power-off input from a remote control apparatus via the communicator 180 or the sensor 185.
In operation S1830, when the power key input is received, the display apparatus may recognize a user mode to determine whether a cold start of the display apparatus is required. In general, when an error occurs during the operation of the display device, a user often inputs a power key of the display device for a predetermined time (e.g., several seconds). For example, when the time between the first power input and the second power input is short, it can be predicted that the possibility that the user presses the power key due to an error occurring in the display device is high. Therefore, the display device according to the embodiment can set a mode in which the possibility that an error has occurred in the display device is high, and determine whether the operation in the actual display device corresponds to the set mode.
The mode in which the possibility that an error has occurred in the display device is high can be determined in various ways. The various modes are as described in fig. 7.
When it is determined in operation S1830 that cold start of the display apparatus is unnecessary according to the result of recognizing the user mode, the display apparatus may proceed to operation S1840.
In operation S1840, the display apparatus may determine whether a system error has occurred.
In order to determine system stability, the display apparatus 100 may confirm whether an executed application normally operates, whether a system internal memory normally operates, whether a system driver fails, whether a crash occurs between running applications, whether a restart is necessary due to a software update, and the like. For example, the display device 100 may use a particular memory or a particular portion of memory to store values related to system stability during operation of the display device 100. That is, the display apparatus 100 may store a value indicating whether a running application normally operates, a value indicating whether a system driver fails, a value indicating whether a crash occurs between running applications, a value indicating whether a restart is necessary due to a software update, or the like in a specific memory or a specific portion of the memory. The display device 100 may determine system stability by reading a stored value associated with system stability.
In operation S1841, the display apparatus 100 may enter a cold power-off mode in response to a system unstable state as a result of determining system stability.
In operation S1842, the display apparatus 100 may receive a power key input.
In operation S1843, the display apparatus 100 may perform a cold start. Since the error code stored in the volatile memory of the display apparatus 100 is removed by performing the cold power-off and the cold start, the error of the display apparatus can be recovered.
In operation S1851, the display apparatus 100 may enter a suspend to RAM mode in response to determining that the system is stable as a result of determining the system stability.
In operation S1852, the display apparatus may receive a power key input.
In operation S1853, since the display apparatus is in the suspend to RAM mode, the display apparatus may perform instant on in response to a power key input.
In operation S1830, when the display apparatus determines that a cold start of the display apparatus is necessary according to a result of recognizing the user pattern, the display apparatus may proceed to operation S1831.
In operation S1831, the display apparatus may perform a cold start. By the cold start, an error of the display device can be recovered.
The procedure of the operation method illustrated in fig. 6 may correspond to S1830 and S1831 in fig. 18.
Further, in the example shown in fig. 18, when the display device recognizes a user pattern requiring a cold start and determines that the cold start is necessary in operation S1830, the display device does not directly start a restart but may output a user interface to inquire about the user' S intention as shown in fig. 17 in operation S1831.
FIG. 19 is a schematic block diagram of an electronic device 1900 that performs a startup using a wait time when a power down input is received according to an embodiment.
Referring to fig. 19, the electronic device 1900 includes a CPU 1910, a microcomputer 1920, a sensor 1930, a volatile memory 1940, and a non-volatile memory 1950.
The CPU 1910 may perform overall control of the components of the electronic device 1900 and may perform cold boot or warm boot according to the instructions of the microcomputer 1920. Cold boot may include loading programs needed for initialization (such as an operating system stored in the non-volatile memory 1950, etc.) into the volatile memory 1940 to perform boot operations. Warm boot may include performing boot operations based on programs needed for initialization, such as an operating system stored in volatile memory 1940.
The microcomputer 1920 includes a microprocessor separate from the CPU 1910, wherein the microprocessor continues to operate even when the electronic device 1900 is powered down without interrupting the power supply. The microcomputer 1920 may count the waiting time from the power-off input to the next power-on input of the electronic device 1900. Then, when receiving the power-on input of the electronic apparatus 1900, the microcomputer 1920 checks the counted waiting time, and checks whether the waiting time exceeds a predetermined threshold.
As a result of the comparison, when the waiting time exceeds the threshold, the microcomputer 1920 determines that the possibility of an error occurrence in the electronic device 1900 is low, and instructs the CPU 1910 to perform normal startup. For example, the microcomputer 1920 may instruct the CPU 1910 to perform an instant boot or a warm boot.
As a result of the comparison, when the waiting time does not exceed the threshold, the microcomputer 1920 determines that the possibility of an error occurring in the electronic device 1900 is high, and controls to suspend the power supply to the volatile memory 1940. When power to the volatile memory 1940 is blocked, the contents retained in the volatile memory 1940 may be removed, and thus an error state may be eliminated. The microcomputer 1920 can instruct the CPU 1910 to perform a cold boot.
Sensor 1930 senses user input, such as power on or power off of electronic device 1900.
The volatile memory 1940 is a memory such as a RAM, and contents stored in the volatile memory 1940 are retained as long as power supply to the volatile memory 1940 is maintained. When power to the volatile memory 1940 is stopped, the contents stored in the volatile memory 1940 are removed.
Unlike the volatile memory 1940, the nonvolatile memory 1950 is a memory that always stores stored contents regardless of whether power supply is blocked, and may include, for example, a flash memory or the like.
Fig. 20 is a reference diagram for explaining an operation of the electronic device 1900 according to fig. 19.
Referring to FIG. 20, when electronic device 1900 receives a power down input 2010, CPU 1910 performs a power down operation. At this time, even when the electronic device 1900 is powered off, the microcomputer 1920 may continue to maintain the power-on state to count the waiting time T. Also, the electronic device 1900 may maintain power to the RAM1940 of the electronic device 1900 for implementing the instant start function, so that the contents stored in the RAM1940 may be retained without being removed.
Next, when the electronic device 1900 receives the power-on input 2020, the microcomputer 1920 first checks the time T1 from the power-off input 2010 to the power-on input 2020 to determine whether the time T1 exceeds a threshold value. When the time T1 does not exceed the threshold, that is, when it is determined that the waiting time T1 is short, the microcomputer 1920 can execute the cold start control by considering that the possibility of the occurrence of an error in the electronic apparatus 1900 is high. Specifically, the microcomputer 1920 can control the power supply block 2030 to the RAM1940 so as to remove the content stored in the RAM 1940. By blocking power to RAM1940, content stored in RAM1940 is removed, thereby removing potentially erroneous content from RAM 1940. Next, the microcomputer 1920 may send a cold start instruction 2040 to the CPU 1910. The CPU 1910 receiving the cold boot instruction 2040 performs a boot operation by loading an initialization program (such as an operating system) stored in the nonvolatile memory into the RAM 1940.
When the waiting time T1 exceeds the threshold, that is, when it is determined that the waiting time T is not short, the microcomputer 1920 can execute the warm-start control by taking into account that the possibility of the occurrence of an error in the electronic apparatus 1900 is low. Specifically, when the microcomputer 1920 transmits the warm boot instruction 2050 to the CPU 1910, the CPU 1910 performs a boot operation based on the contents stored in the RAM 1940.
According to the embodiment, in the case where a problem occurs during the operation of the display apparatus to which the instant start technology is applied, when the user repeatedly turns on and off the power key to solve the problem, the pattern in which the user presses the power key may be analyzed, thereby automatically restoring the operation error problem of the display apparatus by determining the user's own cold start intention.
The method performed on the display device according to the embodiment may also be implemented as a program command to be executed in various computer units, and then may be recorded in a computer-readable recording medium. The computer-readable recording medium may include one or more of a program command, a data file, a data structure, and the like. The program command recorded to the computer-readable recording medium may be specially designed or configured for the present disclosure, or may be well known to those having ordinary skill in the art. Examples of the computer-readable recording medium include: magnetic media including hard disks, magnetic tapes and floppy disks, optical media including CD-ROMs and DVDs, magneto-optical media including floppy disks and hardware designed to store and execute program commands in ROM, RAM, flash memory, etc. Examples of the program command include not only machine code generated by a compiler but also a high-level programming language to be executed in a computer by using an interpreter.
It is to be understood that the embodiments described herein are to be considered in a descriptive sense only and not for purposes of limitation. Descriptions of features or aspects within each embodiment should generally be considered as available for other similar features or aspects in other embodiments.
Although one or more embodiments have been described with reference to the accompanying drawings, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope defined by the following claims.

Claims (13)

1. A display device, comprising:
a user input interface;
a memory storing one or more instructions; and
a processor configured to execute the one or more instructions stored in the memory to:
receiving a power input to the display device via a user input interface,
in response to receiving the power input, obtaining time information for the display device, wherein the time information for the display device includes at least one of: information on one or more operation times of the display device before the power input is received and information on one or more waiting times of the display device before the power input is received, wherein the information on the operation times of the display device indicates a time from when the display device is powered on to when the display device is powered off, and the information on the waiting time of the display device indicates a time from when the display device is powered off to when the display device is powered on;
determining to perform a cold start operation based on a determination that the one or more operation times of the display device are less than or equal to a first threshold; and/or determining to perform a cold start operation based on determining that the one or more latencies of the display device are less than or equal to a second threshold; and is
In response to determining to perform the cold start operation, performing the cold start operation;
the display device further includes a volatile memory, wherein the cold start operation includes: an operation of cold-powering off the display device, wherein power supply to a volatile memory is suspended in the operation of cold-powering off the display device; and initiating operation of the display device.
2. The display device of claim 1, wherein the power input comprises a first power input and a second power input,
wherein the processor is configured to execute the one or more instructions to:
in response to receiving the second power input, obtaining first time information indicative of a time between the first power input and the second power input,
determining whether the first time information corresponds to a predetermined first pattern, and
determining whether to perform a cold start operation of the display apparatus based on whether the first time information corresponds to the predetermined first mode.
3. The display device of claim 2, wherein when the first power input is a power-off input to the display device and the second power input is a power-on input to the display device, the first time information indicates a waiting time of the display device, and
wherein the first time information indicates an operation time of the display device when the first power input is a power-on input to the display device and the second power input is a power-off input to the display device.
4. The display device of claim 2, wherein the processor is configured to execute the one or more instructions to determine that the first time information corresponds to the predetermined first mode when the first time information is less than a first threshold.
5. The display device according to claim 4, wherein the first threshold value can be updated by the server or updated according to a result determined by machine learning.
6. The display device of claim 1, wherein the power input comprises a first power input, a second power input, and a third power input, and
wherein the processor is configured to execute the one or more instructions to:
in response to receiving the third power input, obtaining first time information indicative of a time between the first power input and the second power input and second time information indicative of a time between the second power input and the third power input,
determining at least one of: whether the first time information corresponds to a predetermined first pattern and the second time information corresponds to a predetermined second pattern, and
determining whether to perform a cold start operation of the display apparatus according to a result of the determination as to whether the first time information corresponds to the at least one of the predetermined first mode and the second time information corresponds to the predetermined second mode.
7. The display device of claim 6, wherein the processor is configured to execute the one or more instructions to determine to perform a cold start operation when the first time information is determined to be less than the first threshold and the second time information is less than the second threshold.
8. The display device of claim 6, wherein the processor is further configured to execute the one or more instructions to determine to perform a cold start operation when the first time information is determined to be less than the first threshold or the second time information is determined to be less than the second threshold.
9. The display device of claim 1, wherein the power input comprises a first power input and a second power input, and
wherein the processor is further configured to execute the one or more instructions to:
in response to receiving the first power input, switching to an information mode in which information is displayed on the display by executing a predetermined application set to be executed in correspondence with the first power input, and
in response to receiving the second power input, switching to a normal mode in which an application being executed on the display device prior to the first power input is continued to be executed.
10. The display device of claim 1, wherein the processor is further configured to execute the one or more instructions to:
receiving a power-on input to the display device;
obtaining a duration between a power-on input and a power-off input prior to the power-on input; and is provided with
The cold start control or the hot start control is executed according to the obtained duration,
wherein the processor comprises a CPU and a microcomputer configured to: the power supply to the volatile memory is blocked and the cold start control is performed by instructing the CPU to perform a cold start operation, and the warm start control is performed by instructing the CPU to perform a warm start operation.
11. The display device of claim 10, wherein the microcomputer is further configured to:
counting a duration between a power-on input and a power-off input prior to the power-on input;
determining whether a duration of the count is equal to or less than a threshold;
executing cold start control when it is determined that the duration is equal to or less than the threshold; and is
When it is determined that the duration exceeds the threshold, warm-start control is executed.
12. A method of operating a display device, the method comprising:
receiving a power input to the display device;
in response to receiving the power input, obtaining time information of the display device, wherein the time information of the display device includes at least one of: information on one or more operation times of the display device before the power input is received and information on one or more waiting times of the display device before the power input is received, wherein the information on the operation times of the display device indicates a time from when the display device is powered on to when the display device is powered off, and the information on the waiting time of the display device indicates a time from when the display device is powered off to when the display device is powered on;
determining to perform a cold start operation based on a determination that the one or more operation times of the display device are less than or equal to a first threshold; and/or determining to perform a cold start operation based on determining that the one or more latencies of the display device are less than or equal to a second threshold; zxfoom
In response to determining to perform the cold start operation, performing the cold start operation, wherein the cold start operation comprises: an operation of cold-powering off the display device, wherein power supply to a volatile memory of the display device is suspended in the operation of cold-powering off the display device; and initiating operation of the display device.
13. The method of claim 12, wherein the power input comprises a first power input and a second power input, and
wherein the method comprises the following steps:
in response to receiving the second power input, obtaining first time information indicative of a time between the first power input and the second power input;
determining whether the first time information corresponds to a predetermined first pattern; and
determining whether to perform a cold start operation of the display apparatus based on whether the first time information corresponds to the predetermined first mode.
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