WO2018196430A1

WO2018196430A1 - Method and apparatus for implementing low-power-consumption always-on display of information

Info

Publication number: WO2018196430A1
Application number: PCT/CN2017/119840
Authority: WO
Inventors: 聂道财; 李欣; 赵鹏
Original assignee: 上海掌门科技有限公司
Priority date: 2017-04-26
Filing date: 2017-12-29
Publication date: 2018-11-01
Also published as: CN107168508B; CN107168508A

Abstract

A method and apparatus for implementing low-power-consumption always-on display of information. The method for implementing low-power-consumption always-on display of information is used for a terminal having a liquid crystal display screen, and comprises the following steps: switching a liquid crystal display screen to an idle mode, and at the same time, adjusting the display power consumption to an ultra-low power consumption display state; displaying acquired terminal dial information in the ultra-low power consumption display state; periodically starting a real-time clock interrupt, and a mobile industry processor interface exiting an ultra-low power consumption mode; a dial application refreshing displayed information; and the mobile industry processor interface entering the ultra-low power consumption mode again. A low-light always-on display device can ensure that a user can view information clearly at any time. In addition, by means of regularly refreshing the dial information, it is ensured that a user views clearer displayed information within a fixed period, and the reduction of the power consumption is also ensured.

Description

Method and device for realizing low power consumption constant display information

Technical field

The present invention relates to the field of smart wearable device technologies, and in particular, to a method and device for implementing low power consumption constant display information.

Background technique

Some of the existing smart watches adopt a method of turning off or lowering the backlight of the mobile phone when the watch is in the standby mode, thereby reducing the power consumption of the watch, thereby extending the standby information of the watch.

For example, the application number is 201510283955.7, and the invention name is a method for reducing power consumption of a smart watch and a Chinese invention patent application for a smart watch, and discloses a method for reducing power consumption of a smart watch and a smart watch. The method for reducing the power consumption of the smart watch includes: adjusting the display mode of the smart watch to reduce the power consumption of the smart watch when the smart watch is in a sleep state; and reducing the central processor of the smart watch The working frequency, and adjust the dial refresh period of the smart watch to stop updating the data of the dial second hand. The above solution can display the minute and hour hand data in the sleep mode, reduce the viewing information and the consumed power consumption, and thus extend the standby information.

However, the above work mode cannot always display the information of the watch in real time (24 hours display), but can wait until the dial refresh cycle arrives to see the information display. For the case where the refresh cycle is long, it is obvious that the user needs to wait for a long time. Information can be seen in the dial display, which is not conducive to the user's use of the watch.

Summary of the invention

In view of the above problems, the present invention has been made in order to provide a method and apparatus for achieving low power consumption constant display information that overcomes the above problems or at least partially solves the above problems.

The present invention solves the above technical problems by the following technical solutions:

Specifically, according to an aspect of the present invention, the present invention provides a method for implementing low power consumption constant display information for a terminal having a liquid crystal display, comprising the following steps:

Switching the liquid crystal display to an idle mode while adjusting display power consumption to an ultra low power display state;

The obtained terminal dial information is displayed in the ultra low power display state.

Preferably, the method further comprises the following steps:

The real-time clock interrupt is periodically started, and the mobile industry processor interface exits the ultra-low power mode;

The dial application refreshes the information display;

The mobile industry processor interface re-enters ultra-low power mode.

Preferably, in the method as described above, before the liquid crystal display screen is switched to the idle mode, it is determined whether there is an event entering the ultra low power consumption display state, and if the event exists, the ultra low power consumption display is entered. Status, turn off or set low backlight brightness, set a lower CPU frequency than the normal display state.

Preferably, in the method as described above, the period of periodically starting the real-time clock interrupt is 1 minute, and the real-time clock is provided by the CPU.

Preferably, in the method as described above, the process of displaying the refresh information is as follows:

(1) The system of the terminal enters the screen saver mode and notifies the environment mode interface control;

(2) The environment mode interface control notifies the service startup control;

(3) The service control reads the configuration of the configuration control to perform power consumption related settings;

(4) The service control notifies the registered activity control to enter the environment mode for page rendering change;

(5) The service control wakes up the system according to the refresh time of the configuration control and notifies the active control to perform a page user interface refresh operation;

(6) The service control controls the active control page to refresh the operation after the page refresh operation;

(7) The environment mode interface control notifies the service end control;

(8) The service control notifies the activity control to exit the environment mode.

Preferably, in the method as described above, when the terminal encounters a wakeup event, the terminal resumes the normal display mode.

Preferably, in the method as described above, the wake-up event includes: the user presses a power button, the user touches the liquid crystal screen, the user raises the hand or turns the wrist.

According to another aspect of the present invention, there is also provided a smart device comprising a display screen, a memory, one or more processors;

One or more programs, wherein the one or more programs are stored in a memory and configured to be executed by the one or more processors, the program comprising for performing the method of any of the above step.

Preferably, the display screen is a transflective liquid crystal screen.

According to another aspect of the present invention, there is also provided a computer readable storage medium comprising a computer program for use with a watch having a display screen, the computer program being executable by a processor to perform any of the above The steps of the method.

The invention has the beneficial effects that the low-light display device of the invention can ensure that the user can clearly see the information (24-hour uninterrupted display) at any time. In addition, by periodically refreshing the dial information, the user is guaranteed to see a clearer information display in a fixed period, and power consumption is also guaranteed.

The above description is only an overview of the technical solutions of the present invention, and the above-described and other objects, features and advantages of the present invention can be more clearly understood. Specific embodiments of the invention are set forth below.

DRAWINGS

Various other advantages and benefits will become apparent to those skilled in the art from a The drawings are only for the purpose of illustrating the preferred embodiments and are not to be construed as limiting. Throughout the drawings, the same reference numerals are used to refer to the same parts. In the drawing:

Figure 1 is a flow chart showing the normal mode of the present invention.

2 is a flow chart showing the normal mode of the present invention.

FIG. 3 is a flowchart of a method for implementing low power consumption constant display information according to the present invention.

FIG. 4 is a flow chart of the low power constant display mode of the present invention.

FIG. 5 is a structural diagram of a low power consumption constant display information device according to the present invention.

detailed description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While the embodiments of the present invention have been shown in the drawings, the embodiments Rather, these embodiments are provided so that this disclosure will be more fully understood and the scope of the disclosure will be fully disclosed.

For convenience of understanding, the present invention uses a smart watch as an example to illustrate the technical solutions and technical effects of the present invention. The smart watch of the present invention can enter two modes: one is a normal mode and the other is an ultra-low power display mode. The following is a detailed introduction.

In order to achieve the object of the present invention, the liquid crystal display used in the smart watch of the present invention selects the liquid crystal screen of the transflective mode, so that the liquid crystal screen can clearly display the dial of the screen when the backlight is turned off and the system is hibernated. Or other content, so that users get a good experience. In contrast, in the sleep state of the watch before the present invention, the dial is black, and no information is displayed. In addition, the dial displayed in the ultra-low power state is similar in height to the dial in the steady state state, and when the dial in the always-on state is switched to the state of the ultra-low power constant display information, since the dial heights of the two are similar, this is There is no sudden change in the kind of switching, and the transition is smooth.

Of course, the liquid crystal display of the present invention does not use a liquid crystal screen of a transflective mode, and an ordinary display screen is also possible. It is just that ordinary display screens cannot display content with the screen backlight turned off. In the case of the normal display, in the idle mode, the backlight brightness cannot be fully turned off, and only a relatively low brightness can be set.

Figure 1 is a flow chart showing the normal mode of the present invention. The normal_off of the watch screen is the state in which the screen does not display the content. The main flow is as follows: First, turn off the backlight brightness; then turn off the LCD panel and power supply; turn off the MIPI DSI (MIPI (Mobile Industry Processor Interface) is the abbreviation of Mobile Industry Processor Interface) Is an open standard for mobile application processors initiated by the MIPI Alliance. DSI (Display Pixel Interface) is a serial display interface protocol conforming to the MIPI protocol, and a differential signal line is connected between the host and the display); the LCD controller is turned off; Turn off the LCD related clock. Of course, when the screen is turned off in the normal mode, the CPU continues to work, but since the LCD is turned off, the dial does not have any brightness, so that the information display cannot be seen.

2 is a flow chart showing the normal mode of the present invention. The normal_on of the watch screen is the normal display state of the screen. The main flow is as follows: enable and configure MIPI DSI; enable power supply and initialization of the LCD panel; enable the LCD controller; enable the LCD-related clock; set the appropriate backlight brightness . Of course, when the screen is normally displayed, the brightness of the entire watch dial will be much larger than when the normal mode is not turned on due to the opening of the backlight. At this point, the information display is also the clearest state.

The information described here may be time or other application data such as weather, remaining power, and the like.

As shown in FIG. 3, it is a flowchart of a method for implementing low power consumption constant display information of the present invention. The method is for a terminal having a liquid crystal display, the terminal being a smart watch or a wireless POS machine.

The method includes the following steps:

S110, switching the liquid crystal display to the idle mode, and adjusting the display power consumption to the ultra low power display state;

To reduce power consumption, switch the LCD screen of the screen to idle mode (IDLE mode) and adjust the display power consumption to the ultra-low power display state (MIPI enters ULPS mode). Turn off or set a low backlight brightness and set a lower CPU frequency. Eventually, the system goes to sleep. As shown in Figure 4.

S120. Display the obtained terminal dial information in an ultra low power consumption display state. Since the LCD controller does not sleep, the LCD screen of the LCD screen can be displayed normally, and the LCD screen selects the LCD screen in the transflective mode. Therefore, the LCD screen can still be clear when the backlight is turned off and the system is hibernated. Show the dial of the screen, or other content, so that users get a good experience. In contrast, in the sleep state of the watch before the present invention, the dial is black, and no information is displayed. In addition, the dial displayed in the ultra-low power state is similar in height to the dial in the steady state state, and when the dial in the always-on state is switched to the state of the ultra-low power constant display information, since the dial heights of the two are similar, this is There is no sudden change in the kind of switching, and the transition is smooth.

S130. The real-time clock interrupt is periodically started, and the mobile industry processor interface exits the ultra-low power mode. The Real Time Clock (RTC) interrupt is initiated every fixed period (eg 1 minute) and the MIPI exits the ULPS mode.

S140, the dial application refresh information display. The system enters the Ambient mode (environment mode), and the dial application refreshes the information display. The continuous information can be, for example, 3-5 seconds. Then MIPI enters the ULPS mode again, and thus cyclically displays the purpose of periodically updating the display of the dial information. Here, the real time clock is provided by the CPU.

The above refresh mechanism is based on the standard Android version 5.0, which relies on the Android Dream service. This is also an important innovation of the present invention. The basic concepts, processes, and advantages of the refresh mechanism are described below:

(1) Basic concepts:

Dream mode (screensaver mode): Dream mode is a new feature of Android 4.2. Think of this feature as an interactive screensaver that displays specific images, subscribed news, or other content when the device is idle or locked.

AmbientConfig: Configuration item used to manage Ambient mode, such as switch, refresh rate, screen brightness limit, network access limit, JobScheduler limit, wake locks limit.

AmbientService (Service Control): is the core service for managing the Ambient mode, which is used to manage the life cycle of the Ambient mode and access the AmbientActivity list.

AmbientDream (environment mode interface control): Implements the interface of the dream mode, which is used to monitor the change of the life cycle of the dream, but does not do the UI rendering operation itself. It can be understood as a transparent Dream, and the start and stop of the dream are opened as the ambient mode. And off the signal.

AmbientActivity: The sleep UI implementation interface, such as the dial or some pages that need special display in Ambient mode.

AmbientNative: Used to tell kernal to enter or exit Ambient mode.

The invention is an implementation scheme of AmbientDream serving Dream. When the system is started, AmbientDream is used as the default Dream service of the system. When the system starts, the AmbientService service program is started, the dial program implements the AmbientActivity interface, and is registered with the AmbientService.

(2) Process:

1. The system enters dream mode and informs AmbientDream.

2. AmbientDream notifies AmbientService dreamingStarted.

3. AmbientService reads the configuration of AmbientConfig to perform power consumption related settings.

4. The AmbientService notifies the registered AmbientActivity to enter the ambient mode for page rendering changes.

5. AmbientService wakes up the system according to AmbientConfig refresh frequency (via the system built-in Alarm timed wake-up system) and informs AmbientActivity to perform page UI refresh operation.

6. AmbientService controls the AmbientActivity page refresh operation to sleep the system.

7.AmbientDream notifies AmbientService dreamingStop.

8. AmbientService informs AmbientActivity to exit ambient mode.

(3) Advantages:

1. The upper layer has the ability of UI rendering to achieve flexibility.

2. After entering the ambient mode, the system will maintain the UI effect before waking up on the screen, but the power saving effect is achieved by means of power saving strategy backlight shutdown, network limitation, alarm wake control.

3.ambient mode, the system wakes up information shortly, and only does the UI refresh operation, the power consumption curve will rise in the segment information, but the average power consumption is only slightly improved on the original basis, taking into account the power saving. And display effects.

The S150, mobile industry processor interface re-enters the ultra-low power mode.

In other cases, for example, when the terminal encounters a wake-up event, the MIPI exits the ULPS mode, the LCD exits the IDLE mode, and the terminal resumes the normal display mode. At this time, you can set the normal backlight brightness and set the normal CPU frequency. The wake-up event includes but is not limited to: the user presses the power button; the user touches the liquid crystal screen; the user makes a gesture of raising the hand, turning the wrist, and the like.

As shown in FIG. 5, the present invention also provides a low power consumption display device 200 for a terminal having a liquid crystal display, the device comprising the following modules:

The switching module 210 is configured to switch the liquid crystal display to the idle mode while adjusting the display power consumption to the ultra low power display state.

The low power consumption display module 220 is configured to display the acquired terminal dial information in an ultra low power consumption display state.

The clock interrupt module 230 is configured to periodically initiate a real-time clock interrupt, so that the mobile industry processor interface exits the ultra-low power mode. The Real Time Clock (RTC) interrupt is initiated every fixed period (eg 1 minute) and the MIPI exits the ULPS mode.

The dial refresh module 240 is configured to refresh the dial information display. The dial application refreshes the information display once, and the continuous information can be, for example, 3-5 seconds. Then MIPI enters the ULPS mode again, and thus cyclically displays the purpose of periodically updating the display of the dial information. Here, the real time clock is provided by the CPU.

The wake-up module 250 is configured to: when the terminal encounters the wake-up event, the MIPI exits the ULPS mode, the LCD exits the IDLE mode, and the terminal resumes the normal display mode. At this time, you can set the normal backlight brightness and set the normal CPU frequency. The wake-up event includes but is not limited to: the user presses the power button; the user touches the liquid crystal screen; the user makes a gesture of raising the hand, turning the wrist, and the like.

Through the above method and device, the present invention realizes switching between the normal display mode and the low power consumption constant display mode, and the user can select two modes to switch according to his own use condition. In this way, the smart device of the present invention can realize the technical effect of displaying information 24 hours a day without interruption, and overcomes the technical defects in the prior art that the information cannot be continuously displayed.

Although a smart watch is used in the embodiment of the present invention to schematically represent the beneficial effects of the present invention, any terminal that requires a display screen and needs to be displayed may adopt the technical solution of the present invention. When the device of the present invention is hibernated, the UI is highly customizable. As long as the sleep page inherits the AmbientActivity and implements its own content refresh method, various data such as weather, step data and the like can be displayed. The display information is only an illustrative example of the present invention.

Preferably, the display screen is a transflective liquid crystal screen.

It should be noted:

The algorithms and displays provided herein are not inherently related to any particular computer, virtual device, or other device. Various general purpose devices can also be used with the teaching based on the teachings herein. The structure required to construct such a device is apparent from the above description. Moreover, the invention is not directed to any particular programming language. It is to be understood that the invention may be embodied in a variety of programming language, and the description of the specific language has been described above in order to disclose the preferred embodiments of the invention.

In the description provided herein, numerous specific details are set forth. However, it is understood that the embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques are not shown in detail so as not to obscure the understanding of the description.

Similarly, the various features of the invention are sometimes grouped together into a single embodiment, in the above description of the exemplary embodiments of the invention, Figure, or a description of it. However, the method disclosed is not to be interpreted as reflecting the intention that the claimed invention requires more features than those recited in the claims. Rather, as the following claims reflect, inventive aspects reside in less than all features of the single embodiments disclosed herein. Therefore, the claims following the specific embodiments are hereby explicitly incorporated into the embodiments, and each of the claims as a separate embodiment of the invention.

Those skilled in the art will appreciate that the modules in the devices of the embodiments can be adaptively changed and placed in one or more devices different from the embodiment. The modules or units or components of the embodiments may be combined into one module or unit or component, and further they may be divided into a plurality of sub-modules or sub-units or sub-components. In addition to such features and/or at least some of the processes or units being mutually exclusive, any combination of the features disclosed in the specification, including the accompanying claims, the abstract and the drawings, and any methods so disclosed, or All processes or units of the device are combined. Each feature disclosed in this specification (including the accompanying claims, the abstract and the drawings) may be replaced by alternative features that provide the same, equivalent or similar purpose.

In addition, those skilled in the art will appreciate that, although some embodiments described herein include certain features that are included in other embodiments and not in other features, combinations of features of different embodiments are intended to be within the scope of the present invention. Different embodiments are formed and formed. For example, in the following claims, any one of the claimed embodiments can be used in any combination.

The various component embodiments of the present invention may be implemented in hardware, or in a software module running on one or more processors, or in a combination thereof. Those skilled in the art will appreciate that some or all of the functionality of some or all of the components of the virtual machine creation device in accordance with embodiments of the present invention may be implemented in practice using a microprocessor or digital signal processor (DSP). The invention can also be implemented as a device or device program (e.g., a computer program and a computer program product) for performing some or all of the methods described herein. Such a program implementing the invention may be stored on a computer readable medium or may be in the form of one or more signals. Such signals may be downloaded from an Internet website, provided on a carrier signal, or provided in any other form.

It is to be noted that the above-described embodiments are illustrative of the invention and are not intended to be limiting, and that the invention may be devised without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as a limitation. The word "comprising" does not exclude the presence of the elements or steps that are not recited in the claims. The word "a" or "an" preceding the <RTIgt; </ RTI> <RTIgt; </ RTI> does not exclude the presence of a plurality of such elements. The invention can be implemented by means of hardware comprising several distinct elements and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means can be embodied by the same hardware item. The use of the words first, second, and third does not indicate any order. These words can be interpreted as names.

Claims

A method for implementing low-power and constant-display information for a terminal having a liquid crystal display, comprising the steps of:

Switching the liquid crystal display to an idle mode while adjusting display power consumption to an ultra low power display state;

The obtained terminal dial information is displayed in the ultra low power display state.
The method of claim 1 wherein said method further comprises the step of:

The real-time clock interrupt is periodically started, and the mobile industry processor interface exits the ultra-low power mode;

The dial application refreshes the information display;

The mobile industry processor interface re-enters ultra-low power mode.
The method of claim 1 wherein

Before switching the liquid crystal display to the idle mode, determining whether there is an event entering the ultra low power consumption display state, if the event exists, entering the ultra low power consumption display state, turning off or setting the low backlight brightness, Set a lower CPU frequency than the normal display state.
The method of claim 2 wherein

The period of periodically starting the real-time clock interrupt is 1 minute, and the real-time clock is provided by the CPU.
The method of claim 2 wherein

The process of displaying the refresh information is as follows:

(1) The system of the terminal enters the screen saver mode and notifies the environment mode interface control;

(2) The environment mode interface control notifies the service startup control;

(3) The service control reads the configuration of the configuration control to perform power consumption related settings;

(4) The service control notifies the registered activity control to enter the environment mode for page rendering change;

(5) The service control wakes up the system according to the refresh time of the configuration control and notifies the active control to perform a page user interface refresh operation;

(6) The service control controls the active control page to refresh the operation after the page refresh operation;

(7) The environment mode interface control notifies the service end control;

(8) The service control notifies the activity control to exit the environment mode.
The method of claim 1 wherein the terminal resumes the normal display mode when the terminal encounters a wake event.
The method of claim 6 wherein:

The wake-up event includes: the user presses the power button, the user touches the LCD screen, the user raises the hand or turns the wrist.
A smart device comprising a display screen, a memory, one or more processors;

One or more programs, wherein the one or more programs are stored in a memory and configured to be executed by the one or more processors, the program comprising for performing any of claims 1 to 7. A step of the method described.
The device of claim 8 wherein:

The display screen is a transflective liquid crystal screen.
A computer readable storage medium comprising a computer program for use with a watch having a display screen, the computer program being executable by a processor to perform the steps of the method of any one of claims 1 to 7.