Method and device for managing backlight lamps of liquid crystal display screen and terminalTechnical Field
The invention relates to the technical field of backlight sources in communication technology, in particular to a method, a device and a terminal for managing a backlight lamp of a liquid crystal display screen.
Background
At present, the micro sensors which can be applied to the mobile terminal are various, a common intelligent terminal is already provided with micro sensors such as a gravity acceleration sensor, an electronic compass, an ambient light sensor and a proximity sensor in a standard way, and some high-end intelligent terminals can also be provided with micro sensors such as an RGB sensor, a temperature sensor and a pressure sensor.
In addition to micro sensors, more and more micro chips that can be applied to smart terminals and facilitate users' use are being gradually popularized, such as odor sensors, fingerprint recognition sensors, infrared remote controllers, humidity sensors, blood pressure and pulse sensors, and the like. The new applications bring convenience to the life of people and also bring pressure to the size of the intelligent terminal.
Therefore, how to effectively arrange the sensor devices on the basis of saving the occupied space of the intelligent terminal is an urgent problem to be solved.
Disclosure of Invention
In order to solve the problems in the prior art, embodiments of the present invention provide a method, an apparatus, and a terminal for managing a backlight of a liquid crystal display.
In order to achieve the above purpose, the technical solution of the embodiment of the present invention is realized as follows:
the embodiment of the invention provides a method for managing a backlight lamp of a liquid crystal display screen, which comprises the following steps:
when an incoming call or a call is initiated, judging whether a user brings the terminal close to the ear or not according to the light sensitivity measured by a camera arranged on the terminal;
and after determining that the user approaches the terminal to the ear, turning off a backlight lamp of the liquid crystal display screen of the terminal.
In the above scheme, the camera is a front camera.
In the above scheme, according to the amount of light sensitivity that the camera that sets up on the terminal measured, judge whether the user is close to the ear with the terminal, do:
and judging whether the light sensitivity measured by the camera is smaller than a first threshold value, if so, considering that the user approaches the terminal to the ear, otherwise, considering that the user does not approach the terminal to the ear.
In the above scheme, the method further comprises:
and after determining that the user does not approach the terminal to the ear, further judging whether the terminal moves obviously or not, and after determining that the terminal moves obviously, turning off a backlight lamp of a liquid crystal display screen of the terminal.
In the above scheme, the method further comprises:
and after the terminal is determined not to move obviously, keeping the on state of the backlight lamp of the liquid crystal display screen of the terminal.
In the above scheme, the judging whether the terminal has obvious movement is as follows:
and judging whether the terminal obviously moves according to the measured value of a gravity sensor or a gyroscope arranged on the terminal.
In the above scheme, the determining whether the terminal has obvious movement according to the measured value of the gravity sensor or the gyroscope arranged on the terminal is as follows:
and judging whether the measured value measured by the gravity sensor or the gyroscope is greater than a second threshold value, if so, considering that the terminal has obvious movement, and if not, considering that the terminal does not have obvious movement.
In the above scheme, before determining whether the user brings the terminal close to the ear according to the light sensitivity measured by the camera disposed on the terminal, the method further includes:
and judging whether a call link is established, and starting the camera after the call link is established so that the camera enters an analog sensor mode.
The embodiment of the invention also provides a method for managing the backlight lamp of the liquid crystal display screen, which comprises the following steps:
when an incoming call or a call is initiated, judging whether a user brings the terminal close to the ear or not according to the light sensitivity measured by a camera arranged on the terminal;
and after determining that the user does not approach the terminal to the ear, further judging whether the terminal moves obviously or not, and after determining that the terminal moves obviously, turning off a backlight lamp of a liquid crystal display screen of the terminal.
In the above scheme, the camera is a front camera.
In the above scheme, according to the amount of light sensitivity that the camera that sets up on the terminal measured, judge whether the user is close to the ear with the terminal, do:
and judging whether the light sensitivity measured by the camera is smaller than a first threshold value, if so, considering that the user approaches the terminal to the ear, otherwise, considering that the user does not approach the terminal to the ear.
In the above scheme, the judging whether the terminal has obvious movement is as follows:
and judging whether the terminal obviously moves according to the measured value of a gravity sensor or a gyroscope arranged on the terminal.
In the above scheme, the determining whether the terminal has obvious movement according to the measured value of the gravity sensor or the gyroscope arranged on the terminal is as follows:
and judging whether the measured value measured by the gravity sensor or the gyroscope is greater than a second threshold value, if so, considering that the terminal has obvious movement, and if not, considering that the terminal does not have obvious movement.
In the above scheme, before determining whether the user brings the terminal close to the ear according to the light sensitivity measured by the camera disposed on the terminal, the method further includes:
and judging whether a call link is established, and starting the camera after the call link is established so that the camera enters an analog sensor mode.
The embodiment of the invention also provides a device for managing the backlight lamp of the liquid crystal display screen, which comprises: the first judging module and the first executing module; wherein,
the first judgment module is used for judging whether the user approaches the terminal to the ear according to the light sensitivity measured by the first camera arranged on the terminal when an incoming call or a call is initiated, and triggering the first execution module after the user determines that the user approaches the terminal to the ear;
and the first execution module is used for turning off the backlight lamp of the terminal liquid crystal display screen after receiving the trigger of the first judgment module.
In the above scheme, the first camera is a front camera.
In the above scheme, the apparatus further comprises: a second judgment module; wherein,
the first judgment module is also used for triggering the second judgment module after the user does not enable the terminal to be close to the ear;
the second judgment module is used for further judging whether the terminal has obvious movement or not after receiving the trigger of the first judgment module, and triggering the first execution module after determining that the terminal has obvious movement;
correspondingly, the first execution module is used for turning off the backlight lamp of the terminal liquid crystal display screen after receiving the trigger of the second judgment module.
In the above scheme, the apparatus further comprises: and the third judgment module is used for judging whether the call link is established or not, and starting the first camera after the call link is established so that the first camera enters an analog sensor mode.
The embodiment of the invention also provides a device for managing the backlight lamp of the liquid crystal display screen, which comprises the following components: the fourth judging module, the fifth judging module and the second executing module; wherein,
the fourth judging module is used for judging whether the user approaches the terminal to the ear according to the light sensitivity measured by the second camera arranged on the terminal when an incoming call or a call is initiated, and triggering the fifth judging module after determining that the user does not approach the terminal to the ear;
the fifth judging module is used for further judging whether the terminal has obvious movement or not after receiving the triggering of the fourth judging module, and triggering the second executing module after determining that the terminal has obvious movement;
and the second execution module is used for turning off the backlight lamp of the terminal liquid crystal display screen after receiving the trigger of the fifth judgment module.
In the above scheme, the second camera is a front camera.
In the above scheme, the apparatus further comprises: and the sixth judging module is used for judging whether the call link is established or not, and starting the camera after the call link is established so that the camera enters an analog sensor mode.
The embodiment of the invention also provides a terminal which comprises the device for managing the backlight lamp of the liquid crystal display screen.
According to the method, the device and the terminal for managing the backlight lamp of the liquid crystal display screen, provided by the embodiment of the invention, when an incoming call or a call is initiated, whether a user approaches the terminal to an ear or not is judged according to the light sensitivity measured by the camera arranged on the terminal, and the backlight lamp of the liquid crystal display screen of the terminal is turned off after the user is determined to approach the terminal to the ear; or, when there is an incoming call or a call is initiated, judging whether the user brings the terminal close to the ear according to the light sensitivity measured by a camera arranged on the terminal; after determining that a user does not approach the terminal to the ear, further judging whether the terminal has obvious movement or not, after determining that the terminal has obvious movement, closing a backlight lamp of a liquid crystal display of the terminal, realizing the work which can be done by the proximity sensor by utilizing the camera to realize the work which can be done by the current proximity sensor, and completing the functions as many as possible by adopting as few devices as possible, so that the layout space of the devices and the whole volume of the terminal are saved, and a direction is provided for saving the increasingly large space overhead of the terminal.
Drawings
FIG. 1 is a flow chart illustrating a method for managing a backlight of a liquid crystal display according to an embodiment of the invention;
fig. 2 is a schematic diagram of a position of a camera on a terminal according to an embodiment of the present invention;
FIG. 3 is a flowchart illustrating a method for managing a backlight of a liquid crystal display according to a second embodiment of the present invention;
FIG. 4 is a flow chart illustrating a method for managing a backlight of a liquid crystal display according to a third embodiment of the present invention;
FIG. 5 is a flow chart of a method for managing a backlight of a liquid crystal display according to an embodiment of the invention;
FIG. 6 is a flow chart illustrating a fifth method for managing a backlight of a liquid crystal display according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of an apparatus for managing a backlight of a liquid crystal display according to a sixth embodiment of the present invention;
FIG. 8 is a schematic structural diagram of an apparatus for managing a backlight of a liquid crystal display according to a seventh embodiment of the present invention;
FIG. 9 is a schematic diagram of an apparatus for managing a backlight of a liquid crystal display according to an eighth embodiment of the present invention;
FIG. 10 is a schematic diagram of an apparatus for managing a backlight of a liquid crystal display according to a ninth embodiment of the present invention;
fig. 11 is a schematic structural diagram of an apparatus for managing a backlight of a liquid crystal display according to a tenth embodiment of the present invention.
Detailed Description
In an intelligent terminal, a common micro sensor includes: a gravity acceleration sensor, an electronic compass, an ambient light sensor, a proximity sensor, and the like. Among them, the main functions of the proximity sensor are: when a user answers a call or initiates a call and the mobile terminal is close to the ear, the backlight of the liquid crystal display screen is turned off so as to achieve the purpose of saving electricity.
The proximity sensor is mainly composed of two parts, one is an infrared light emitter and the other is an infrared light receiver. According to reasonable structural design, the infrared light emitter and the infrared light receiver are arranged at positions close to the mobile terminal receiver.
The principle of turning off the backlight of the liquid crystal display screen by using the proximity sensor is as follows: when answering or initiating the incoming call, and the user is close to mobile terminal ear, and at this moment, the infrared light that infrared light emitter launches meets the barrier and reflects back, and infrared light receiver receives the infrared light that reflects back and will give main chip feedback a signal, and main chip accomplishes the function of closing the screen and being shaded, promptly: the backlight of the liquid crystal display is turned off.
Based on this, in the embodiment of the invention, when a call comes or a call is initiated, whether the user brings the terminal close to the ear is judged according to the light sensitivity measured by the camera arranged on the terminal, and after the user brings the terminal close to the ear is determined, the backlight lamp of the liquid crystal display screen of the terminal is turned off; or, when there is an incoming call or a call is initiated, judging whether the user brings the terminal close to the ear according to the light sensitivity measured by a camera arranged on the terminal; after determining that the user does not approach the terminal to the ear, further judging whether the terminal moves obviously or not, and after determining that the terminal moves obviously, turning off a backlight lamp of a liquid crystal display screen of the terminal; or, when an incoming call or a call is initiated, and a camera arranged on the terminal receives a message of reflected light, the backlight lamp of the liquid crystal display screen of the terminal is turned off.
The invention is described in further detail below with reference to the figures and specific embodiments.
Example one
The method for managing the backlight of the liquid crystal display provided by the embodiment, as shown in fig. 1, includes the following steps:
step 101: when an incoming call or a call is initiated, judging whether a user brings the terminal close to the ear or not according to the light sensitivity measured by a camera arranged on the terminal;
here, the camera is a front camera, and as shown in fig. 2, the front camera refers to: is arranged on the front surface of the terminal, namely: the liquid crystal display screen and the receiver of the terminal are arranged on the same side and are arranged at the top of the terminal; wherein, the top of the terminal is as follows: and taking the position of the terminal when the user normally uses as a reference object, namely the top of the terminal.
According to the sensitization volume that the camera that sets up on the terminal measured, judge whether the user is close to the ear with the terminal, specifically do:
and judging whether the light sensitivity measured by the camera is smaller than a first threshold value, if so, considering that the user approaches the terminal to the ear, otherwise, considering that the user does not approach the terminal to the ear.
Wherein, when the light of the environment that the terminal is located is sufficient, when there is the object near the terminal, promptly: when the terminal is brought close to the ear, the amount of light sensitivity is significantly reduced, and the terminal is considered to be close to the ear.
The exposure amount of the environment where the terminal is located, which is measured by the camera, can be used as a first threshold. When the user is not considered to be close to the ear, which indicates that the user is still using other functions of the terminal, the backlight of the liquid crystal display screen needs to be used, namely: it is necessary to turn on the backlight of the liquid crystal display.
One of the main components of the camera is a photosensor array, which senses light when taking a picture and converts the received light into an electrical signal, and the size of the light sensing amount, i.e. the light entering amount, is determined by the size of the electrical signal. During exposure, the exposure strategy is adjusted according to the comparison between the current photosensitive quantity and the target value to be reached by exposure. When the user brings the terminal close to the ear, the photoelectric sensor array of the camera can detect the photosensitive quantity at the moment, so that whether the user brings the terminal close to the ear can be judged by utilizing the photosensitive quantity detected by the photoelectric sensor array of the camera.
The user bringing the terminal close to the ear means: the user brings the earpiece of the terminal close to the ear.
Before determining whether the user brings the terminal close to the ear according to the light sensitivity measured by the camera arranged on the terminal, the method may further include:
and judging whether a call link is established, and starting the camera after the call link is established so that the camera enters an analog sensor mode.
The specific implementation of determining whether the call link is established may adopt the prior art.
Step 102: and after determining that the user approaches the terminal to the ear, turning off a backlight lamp of the liquid crystal display screen of the terminal.
Here, the specific implementation of this step can adopt the prior art.
The purpose of turning off the backlight is: the electric energy of the terminal is saved, and the cruising ability of the terminal is kept.
As can be seen from the above description, in the embodiment, the camera is used to implement the work that the current proximity sensor can do, and as few devices as possible are used to perform as many functions as possible, so that the layout space of the devices and the overall size of the terminal are saved, and a direction is provided for the terminal to save the larger space overhead of the terminal.
In addition, whether the call link is established or not is judged, the camera is started after the call link is established, the camera enters an analog sensor mode, and whether the user approaches the terminal to the ear or not is judged according to the light sensitivity measured by the camera arranged on the terminal.
Example two
When the light of the environment where the terminal is located is weak or even completely black, at this time, because the light of the environment is weak, the light sensing amount measured by the camera is relatively small, and may even be the same as the light sensing amount measured when the terminal is close to the ear, therefore, if only the method in the first embodiment is adopted to determine whether the user is not accurate to close the terminal to the ear, based on this, the method for managing the backlight of the liquid crystal display provided by this embodiment, as shown in fig. 3, includes the following steps:
step 101: when there is an incoming call or a call is initiated, judging whether a user approaches the terminal to the ear according to the light sensitivity measured by a camera arranged on the terminal, executing step 102 after determining that the user does not approach the terminal to the ear, otherwise, executing step 103;
here, the camera is a front camera, and as shown in fig. 2, the front camera refers to: is arranged on the front surface of the terminal, namely: the liquid crystal display screen and the receiver of the terminal are arranged on the same side and are arranged at the top of the terminal; wherein, the top of the terminal is as follows: and taking the position of the terminal when the user normally uses as a reference object, namely the top of the terminal.
According to the sensitization volume that the camera that sets up on the terminal measured, judge whether the user is close to the ear with the terminal, specifically do:
and judging whether the light sensitivity measured by the camera is smaller than a first threshold value, if so, considering that the user approaches the terminal to the ear, otherwise, considering that the user does not approach the terminal to the ear.
The light sensing amount of the environment where the terminal is located, which is measured by the camera, can be used as a first threshold.
One of the main components of the camera is a photosensor array, which senses light when taking a picture and converts the received light into an electrical signal, and the size of the light sensing amount, i.e. the light entering amount, is determined by the size of the electrical signal. During exposure, the exposure strategy is adjusted according to the comparison between the current photosensitive quantity and the target value to be reached by exposure. When the user brings the terminal close to the ear, the photoelectric sensor array of the camera can detect the photosensitive quantity at the moment, so that whether the user brings the terminal close to the ear can be judged by utilizing the photosensitive quantity detected by the photoelectric sensor array of the camera.
Step 102: and further judging whether the terminal has obvious movement or not, executing the step 103 after the terminal is determined to have obvious movement, and otherwise, executing the step 104.
Here, the determining whether the terminal has obvious movement specifically includes:
and judging whether the terminal obviously moves according to the measured value of a gravity sensor or a gyroscope arranged on the terminal.
More specifically, whether the measurement value measured by the gravity sensor or the gyroscope is greater than a second threshold value or not is judged, the terminal is considered to have obvious movement after the measurement value is greater than the second threshold value, and the terminal is considered not to have obvious movement after the measurement value is less than or equal to the second threshold value. Wherein the second threshold value can be set as desired.
Step 103: closing a backlight lamp of the terminal liquid crystal display screen;
here, the specific implementation of this step can adopt the prior art.
The purpose of turning off the backlight is: the electric energy of the terminal is saved, and the cruising ability of the terminal is kept.
Step 104: keeping the backlight lamp of the terminal LCD on.
Here, when it is determined that the terminal is not significantly moved, which indicates that the user is still using other functions of the terminal, it is necessary to use a backlight of the liquid crystal display, that is: it is necessary to turn on the backlight of the liquid crystal display.
As can be seen from the above description, in the embodiment, the camera is used to implement the work that the current proximity sensor can do, and as few devices as possible are used to perform as many functions as possible, so that the layout space of the devices and the overall size of the terminal are saved, and a direction is provided for the terminal to save the larger space overhead of the terminal.
In addition, whether the call link is established or not is judged, the camera is started after the call link is established, the camera enters an analog sensor mode, and whether the user approaches the terminal to the ear or not is judged according to the light sensitivity measured by the camera arranged on the terminal.
EXAMPLE III
The method for managing the backlight of the liquid crystal display provided by the embodiment, as shown in fig. 4, includes the following steps:
step 401: when an incoming call or a call is initiated, judging whether a user brings the terminal close to the ear or not according to the light sensitivity measured by a camera arranged on the terminal;
here, the camera is a front camera, and as shown in fig. 2, the front camera refers to: is arranged on the front surface of the terminal, namely: the liquid crystal display screen and the receiver of the terminal are arranged on the same side and are arranged at the top of the terminal; wherein, the top of the terminal is as follows: and taking the position of the terminal when the user normally uses as a reference object, namely the top of the terminal.
According to the sensitization volume that the camera that sets up on the terminal measured, judge whether the user is close to the ear with the terminal, specifically do:
and judging whether the light sensitivity measured by the camera is smaller than a first threshold value, if so, considering that the user approaches the terminal to the ear, otherwise, considering that the user does not approach the terminal to the ear.
The light sensing amount of the environment where the terminal is located, which is measured by the camera, can be used as a first threshold.
One of the main components of the camera is a photosensor array, which senses light when taking a picture and converts the received light into an electrical signal, and the size of the light sensing amount, i.e. the light entering amount, is determined by the size of the electrical signal. During exposure, the exposure strategy is adjusted according to the comparison between the current photosensitive quantity and the target value to be reached by exposure. When the user brings the terminal close to the ear, the photoelectric sensor array of the camera can detect the photosensitive quantity at the moment, so that whether the user brings the terminal close to the ear can be judged by utilizing the photosensitive quantity detected by the photoelectric sensor array of the camera.
The user bringing the terminal close to the ear means: the user brings the earpiece of the terminal close to the ear.
Before determining whether the user brings the terminal close to the ear according to the light sensitivity measured by the camera arranged on the terminal, the method may further include:
and judging whether a call link is established, and starting the camera after the call link is established so that the camera enters an analog sensor mode.
The specific implementation of determining whether the call link is established may adopt the prior art.
Step 402: and after determining that the user does not approach the terminal to the ear, further judging whether the terminal moves obviously or not, and after determining that the terminal moves obviously, turning off a backlight lamp of a liquid crystal display screen of the terminal.
Here, the determining whether the terminal has obvious movement specifically includes:
and judging whether the terminal obviously moves according to the measured value of a gravity sensor or a gyroscope arranged on the terminal.
More specifically, whether the measurement value measured by the gravity sensor or the gyroscope is greater than a second threshold value or not is judged, the terminal is considered to have obvious movement after the measurement value is greater than the second threshold value, and the terminal is considered not to have obvious movement after the measurement value is less than or equal to the second threshold value. Wherein the second threshold value can be set as desired.
The specific implementation of turning off the backlight of the terminal liquid crystal display can adopt the prior art.
The purpose of turning off the backlight is: the electric energy of the terminal is saved, and the cruising ability of the terminal is kept.
When it is determined that the terminal is not moving significantly, it indicates that the user is still using other functions of the terminal, and needs to use the backlight of the liquid crystal display, that is: it is necessary to turn on the backlight of the liquid crystal display.
As can be seen from the above description, in the embodiment, the camera is used to implement the work that the current proximity sensor can do, and as few devices as possible are used to perform as many functions as possible, so that the layout space of the devices and the overall size of the terminal are saved, and a direction is provided for the terminal to save the larger space overhead of the terminal.
In addition, whether the call link is established or not is judged, the camera is started after the call link is established, the camera enters an analog sensor mode, and whether the user approaches the terminal to the ear or not is judged according to the light sensitivity measured by the camera arranged on the terminal.
Example four
The method for managing the backlight of the liquid crystal display provided by the embodiment, as shown in fig. 5, includes the following steps:
step 501: when an incoming call or call is initiated, judging whether a message that a camera arranged on a terminal receives reflected light is received;
here, the camera is a front camera, and as shown in fig. 2, the front camera refers to: is arranged on the front surface of the terminal, namely: the liquid crystal display screen and the receiver of the terminal are arranged on the same side and are arranged at the top of the terminal; wherein, the top of the terminal is as follows: and taking the position of the terminal when the user normally uses as a reference object, namely the top of the terminal.
Before determining whether a message that a camera disposed on the terminal receives reflected light is received, the method may further include:
and judging whether a call link is established, and starting the camera after the call link is established so that the camera enters an analog sensor mode.
The specific implementation of determining whether the call link is established may adopt the prior art.
The reflected light is: the light emitted by a laser emitter arranged on the terminal meets an obstacle and is reflected to the reflected light of the camera; the laser transmitter is arranged at a position corresponding to the camera; because there is the structure of one deck filtering infrared light in the camera module of camera, so, the camera can not receive the infrared light, consequently, laser emitter is other laser emitter except that infrared light emitter.
In practical application, in order to save resources, when receiving reflected light, only a small area in the camera can be used as a receiving end to replace a laser receiver in the proximity sensor. The size of the small block area opened in the camera can be determined according to the pixel number and the pixel size of the camera; in practical applications, the size of the small area needs to be flexibly controlled to reach the criterion of receiving the light reflected by the laser emitter.
Step 502: and after the information that the camera receives the reflected light is determined to be received, the backlight lamp of the terminal liquid crystal display screen is closed.
Here, the specific implementation of this step can adopt the prior art.
The purpose of turning off the backlight is: the electric energy of the terminal is saved, and the cruising ability of the terminal is kept.
As can be seen from the above description, in the embodiment, the function of receiving the reflected light by the camera is utilized to implement the work that the proximity sensor can do at present, and as few devices as possible are adopted to complete as many functions as possible, so that the layout space of the devices and the overall volume of the terminal are saved, and a direction is provided for saving the terminal more and more space overhead.
In addition, whether the call link is established or not is judged, the camera is started after the call link is established, the camera enters an analog sensor mode, and whether the user approaches the terminal to the ear or not is judged according to the light sensitivity measured by the camera arranged on the terminal.
EXAMPLE five
The method for managing the backlight of the liquid crystal display provided by the embodiment, as shown in fig. 6, includes the following steps:
step 601: detecting an incoming call or a call initiated by a user, judging whether a call link is established, if so, executing step 602, otherwise, executing step 607;
here, the specific implementation of determining whether the call link is established may adopt the prior art.
Step 602: starting the front camera to enable the front camera to enter an analog sensor mode;
here, as shown in fig. 2, the front camera refers to: is arranged on the front surface of the terminal, namely: the liquid crystal display screen and the receiver of the terminal are arranged on the same side and are arranged at the top of the terminal; wherein, the top of the terminal is as follows: and taking the position of the terminal when the user normally uses as a reference object, namely the top of the terminal.
Step 603: judging whether the user approaches the terminal to the ear according to the light sensitivity measured by the front camera, executing step 604 after determining that the user does not approach the terminal to the ear, otherwise, executing step 605;
here, the determining, according to the amount of light sensitivity measured by the front camera, whether the user brings the terminal close to the ear specifically includes:
and judging whether the light sensitivity measured by the front camera is smaller than a first threshold value, and if so, considering that the user approaches the terminal to the ear, otherwise, considering that the user does not approach the terminal to the ear.
The exposure amount of the environment where the terminal is located, which is measured by the front-facing camera, may be used as a first threshold. When the first threshold is determined to be less than the first threshold, it indicates that there is a significant change in light, and thus that the user has brought the terminal close to the ear.
One of the main components of the camera is a photosensor array, which senses light when taking a picture and converts the received light into an electrical signal, and the size of the light sensing amount, i.e. the light entering amount, is determined by the size of the electrical signal. During exposure, the exposure strategy is adjusted according to the comparison between the current photosensitive quantity and the target value to be reached by exposure. When the user brings the terminal close to the ear, the photoelectric sensor array of the camera can detect the photosensitive quantity at the moment, so that whether the user brings the terminal close to the ear can be judged by utilizing the photosensitive quantity detected by the photoelectric sensor array of the camera.
Step 604: further judging whether the terminal has obvious movement, executing the step 605 after the terminal is determined to have obvious movement, otherwise, executing the step 606;
here, the determining whether the terminal has obvious movement specifically includes:
and judging whether the terminal obviously moves according to the measured value of a gravity sensor or a gyroscope arranged on the terminal.
More specifically, whether the measurement value measured by the gravity sensor or the gyroscope is greater than a second threshold value or not is judged, the terminal is considered to have obvious movement after the measurement value is greater than the second threshold value, and the terminal is considered not to have obvious movement after the measurement value is less than or equal to the second threshold value. Wherein the second threshold value can be set as desired.
Step 605: closing a backlight lamp of the terminal liquid crystal display screen;
here, the specific implementation of this step can adopt the prior art.
The purpose of turning off the backlight is: the electric energy of the terminal is saved, and the cruising ability of the terminal is kept.
Step 606: keeping the backlight lamp of the terminal LCD on.
Here, when it is determined that the terminal is not significantly moved, which indicates that the user is still using other functions of the terminal, it is necessary to use a backlight of the liquid crystal display, that is: it is necessary to turn on the backlight of the liquid crystal display.
Step 607: the front camera is not started.
As can be seen from the above description, in the embodiment, the camera is used to implement the work that the current proximity sensor can do, and as few devices as possible are used to perform as many functions as possible, so that the layout space of the devices and the overall size of the terminal are saved, and a direction is provided for the terminal to save the larger space overhead of the terminal.
In addition, whether the call link is established or not is judged, the camera is started after the call link is established, the camera enters an analog sensor mode, and whether the user approaches the terminal to the ear or not is judged according to the light sensitivity measured by the camera arranged on the terminal.
EXAMPLE six
To implement the method of the first embodiment, an embodiment of the present invention further provides an apparatus for managing a backlight of a liquid crystal display, as shown in fig. 7, the apparatus including: a first camera 71, a first judging module 72 and a first executing module 73; wherein,
a first judging module 72, configured to, when there is an incoming call or a call is initiated, judge whether the user brings the terminal close to the ear according to the light sensitivity measured by the first camera 71 disposed on the terminal, and trigger the first executing module 73 after determining that the user brings the terminal close to the ear;
and the first executing module 73 is configured to turn off a backlight of the terminal liquid crystal display after receiving the trigger of the first determining module 72.
Wherein the first camera 71 is a front camera; here, the front camera means: is arranged on the front surface of the terminal, namely: the liquid crystal display screen and the receiver of the terminal are arranged on the same side and are arranged at the top of the terminal; wherein, the top of the terminal is as follows: and taking the position of the terminal when the user normally uses as a reference object, namely the top of the terminal.
The apparatus may further comprise: and the third judging module is used for judging whether the call link is established or not, and starting the first camera 71 after the call link is established, so that the first camera 71 enters an analog sensor mode.
In practical applications, the first determining module, the first executing module and the third determining module may be implemented by a Central Processing Unit (CPU), a Digital Signal Processor (DSP), or a Programmable logic Array (FPGA) in the device for managing the backlight of the liquid crystal display.
Here, the specific processing procedure of the first determining module in the apparatus according to the embodiment of the present invention has been described in detail above, and is not repeated.
EXAMPLE seven
In order to implement the method of the second embodiment, another apparatus for managing a backlight of a liquid crystal display is provided in an embodiment of the present invention, as shown in fig. 8, the apparatus includes: a first camera 71, a first judgment module 72, a first execution module 73 and a second judgment module 74; wherein,
the first judging module 72 is configured to, when there is an incoming call or a call is initiated, judge whether the user brings the terminal close to the ear according to the light sensitivity measured by the first camera 71 disposed on the terminal, determine that the user brings the terminal close to the ear, trigger the first executing module 73, and trigger the second judging module 74 after determining that the user does not bring the terminal close to the ear;
the first executing module 73 is configured to turn off a backlight of the terminal liquid crystal display after receiving the trigger of the first determining module 72 or the trigger of the second determining module 74;
the second judging module 74 is configured to further judge whether the terminal has obvious movement after receiving the trigger of the first judging module 72, and trigger the first executing module 73 after determining that the terminal has obvious movement.
Wherein the first camera 71 is a front camera; here, the front camera means: is arranged on the front surface of the terminal, namely: the liquid crystal display screen and the receiver of the terminal are arranged on the same side and are arranged at the top of the terminal; wherein, the top of the terminal is as follows: and taking the position of the terminal when the user normally uses as a reference object, namely the top of the terminal.
The second determination module 74 is further configured to keep the backlight of the lcd of the terminal turned on after determining that the terminal has not moved significantly.
The apparatus may further comprise: and the third judging module is used for judging whether the call link is established or not, and starting the first camera 71 after the call link is established, so that the first camera 71 enters an analog sensor mode.
In practical application, the first judging module, the first executing module, the second judging module and the third judging module can be realized by a CPU, a DSP or an FPGA in a device for managing the backlight lamp of the liquid crystal display screen.
Here, the specific processing procedures of the first determining module and the second determining module in the apparatus according to the embodiment of the present invention have been described in detail above, and are not described again.
Example eight
As a method of the third embodiment, there is provided an apparatus for managing a backlight of a liquid crystal display, as shown in fig. 9, the apparatus including: a second camera 91, a fourth judging module 92, a fifth judging module 93 and a second executing module 94; wherein,
a fourth judging module 92, configured to judge whether the user brings the terminal close to the ear according to the light sensitivity measured by the second camera 91 disposed on the terminal when there is an incoming call or a call is initiated, and trigger the fifth judging module 93 after determining that the user does not bring the terminal close to the ear;
a fifth judging module 93, configured to further judge whether the terminal has obvious movement after receiving the trigger of the fourth judging module 92, and trigger the second executing module 94 after determining that the terminal has obvious movement;
and the second executing module 94 is configured to turn off a backlight of the terminal liquid crystal display after receiving the trigger of the fifth determining module 93.
The second camera 91 is a front camera; here, the front camera means: is arranged on the front surface of the terminal, namely: the liquid crystal display screen and the receiver of the terminal are arranged on the same side and are arranged at the top of the terminal; wherein, the top of the terminal is as follows: and taking the position of the terminal when the user normally uses as a reference object, namely the top of the terminal.
The apparatus may further comprise: and a sixth judging module, configured to judge whether the call link is established, and after determining that the call link is established, start the second camera 91, so that the second camera 91 enters an analog sensor mode.
In practical application, the fourth judging module, the fifth judging module, the second executing module and the sixth judging module can be realized by a CPU, a DSP or an FPGA in a device for managing the backlight lamp of the liquid crystal display screen.
Here, the specific processing procedures of the fourth determining module and the fifth determining module in the apparatus according to the embodiment of the present invention have been described in detail above, and are not described again.
Example nine
In order to implement the method of the fourth embodiment, an embodiment of the present invention further provides an apparatus for managing a backlight of a liquid crystal display, as shown in fig. 10, the apparatus including: a third camera 101, a receiving module 102 and a third executing module 103; wherein,
a receiving module 102, configured to receive a message that the third camera 101 disposed on the terminal receives the reflected light;
and the third executing module 103 is configured to close a backlight of the terminal liquid crystal display after a call is received or a call is initiated and a message that the second camera 101 arranged on the terminal receives the reflected light is received.
The third camera 101 is a front camera; here, the front camera means: is arranged on the front surface of the terminal, namely: the liquid crystal display screen and the receiver of the terminal are arranged on the same side and are arranged at the top of the terminal; wherein, the top of the terminal is as follows: and taking the position of the terminal when the user normally uses as a reference object, namely the top of the terminal.
The apparatus may further include: and the seventh judging module is used for judging whether the call link is established or not, and starting the third camera 101 after the call link is established, so that the third camera 101 enters an analog sensor mode.
Here, the specific processing procedures of the receiving module and the third executing module in the apparatus according to the embodiment of the present invention have been described in detail above, and are not described again.
Example ten
In addition to the components and corresponding functions shown in fig. 10, the device for managing a backlight of a liquid crystal display provided in this embodiment further includes, as shown in fig. 11: a laser transmitter 111; accordingly, the reflected light is: the light emitted by the laser emitter 111 encounters the obstacle and is reflected to the third camera 101; since the camera module of the third camera 101 has a structure for filtering out infrared light, the third camera 101 cannot receive infrared light, and the laser transmitter 111 is another laser transmitter except for an infrared light transmitter.
In practical applications, in order to save resources, only a small area in the third camera 101 may be used as a receiving end to replace the laser receiver in the proximity sensor when receiving the reflected light. The size of this small block area opened up in the third camera 101 can be determined according to the number of pixels and the pixel size of the second camera 101; in practical applications, the size of the small area needs to be flexibly controlled to reach the criterion of receiving the light reflected by the laser emitter.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
An embodiment of the present invention further provides a terminal, which includes the basic structure of the apparatus for managing a backlight of a liquid crystal display shown in fig. 7, 8, 9, 10, or 11, and various modifications and equivalents thereof, which are not described in detail.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.