CN113992985A - Intelligent playing method and intelligent playing device - Google Patents
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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
- H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
- H04N21/44213—Monitoring of end-user related data
- H04N21/44218—Detecting physical presence or behaviour of the user, e.g. using sensors to detect if the user is leaving the room or changes his face expression during a TV program
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- 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
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
- H04N21/42202—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS] environmental sensors, e.g. for detecting temperature, luminosity, pressure, earthquakes
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- 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
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
- H04N21/42203—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS] sound input device, e.g. microphone
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Abstract
The application provides an intelligent playing method and an intelligent playing device. The intelligent playing method is applied to a controller in an intelligent playing device. When the user is not in front of the intelligent playing device, the controller controls the intelligent playing device to pause playing, and the user can be represented to leave when the user is not in front of the intelligent playing device, so that the intelligent playing method can automatically pause playing after the user leaves; when the user is in front of the intelligent playing device, the controller controls the intelligent playing device to continue playing, and the user can represent the user return when the user is not in front of the intelligent playing device, so that the intelligent playing method can automatically continue playing after the user returns; in summary, after the user leaves or returns, even if both hands of the user are occupied, the smart playing device can be controlled to pause or continue playing, so that the smart playing method provided by the application can improve the user experience of the user on the multimedia playing device.
Description
Technical Field
The present invention relates to the field of automatic control technologies, and in particular, to an intelligent playing method and an intelligent playing apparatus.
Background
At present, in daily life, when a user chases a series with a flat plate, if the user leaves temporarily, the user needs to click the touch screen with a hand to pause video playing, and after the user returns, the user needs to click the touch screen with the hand again to continue playing the video; when the user chase after a TV, if the user temporarily leaves, the user needs to click the button on the infrared remote controller or the Bluetooth remote controller by hand to pause the video playing, and after the user returns, the user needs to click the button on the infrared remote controller or the Bluetooth remote controller again by hand to continue playing the video.
Therefore, for most multimedia playing devices, such as a tablet, a smart television, and the like, after the playing is started, if a user leaves or returns, the playing can be continued or paused through the touch screen, and the playing can also be continued or paused through the infrared remote controller or the bluetooth remote controller, that is, the multimedia devices are all manually controlled.
However, when the user leaves or returns, if both hands are occupied, the multimedia device cannot be controlled in time, that is, the multimedia playing device cannot be paused or continuously played in time, so that the use experience of the user is reduced.
Therefore, how to improve the user experience of the multimedia playing device is an urgent technical problem to be solved.
Disclosure of Invention
In view of this, the present invention provides an intelligent playing method and an intelligent playing apparatus, so as to improve the user experience of the multimedia playing device.
In order to achieve the above purpose, the embodiments of the present invention provide the following technical solutions:
one aspect of the present application provides an intelligent playing method applied to a controller in an intelligent playing device, including:
after controlling the intelligent playing device to play, judging whether a user is in front of the intelligent playing device;
if the user is not in front of the intelligent playing device, controlling the intelligent playing device to pause playing;
and if the user is in front of the intelligent playing device, controlling the intelligent playing device to continue playing.
Optionally, determining whether the user is in front of the smart play device includes:
measuring the distance of an obstacle in front of the intelligent playing device by using a microphone and a loudspeaker in the intelligent playing device to obtain a distance measurement distance;
judging whether the ranging distance is equal to a reference distance or not;
if the ranging distance is not equal to the reference distance, determining that the user is in front of the intelligent playing device;
and if the distance measurement distance is equal to the reference distance, determining that the user is not in front of the intelligent playing device.
Optionally, the distance measurement is performed on the obstacle in front of the smart play device by using the microphone and the speaker in the smart play device, so as to obtain the distance measurement distance, including:
controlling a loudspeaker in the intelligent playing device to send out an ultrasonic signal with a preset frequency;
controlling a microphone in the intelligent playing device to carry out extraction on the ultrasonic signal with the preset frequency to obtain a time domain signal waveform image;
obtaining the time interval of the ultrasonic signals of the preset frequency acquired twice in the adjacent time by analyzing the time domain signal waveform image;
and determining the distance measuring distance according to the time interval.
Optionally, the formula for determining the ranging distance is as follows:
L＝1/2×T×C
wherein L is the distance measurement distance, T is the time interval, and C is the speed of sound in the air.
Optionally, if the speaker sends out a sound wave signal, the speaker in the smart playing device is controlled to send out an ultrasonic signal with a preset frequency, including:
and embedding the ultrasonic signals with the preset frequency into the sound wave signals, and sending out the signals by the loudspeaker together.
Optionally, when the user is in front of the smart play device, the method further includes:
converting the time domain signal waveform image into a frequency domain signal waveform image by using Fourier transform;
analyzing the change characteristics of the frequency waveform area in the frequency domain signal waveform image to judge the motion characteristics of the user;
and executing corresponding preset operation according to the motion characteristics.
Optionally, determining whether the ranging distance is equal to a reference distance includes:
subtracting the ranging distance from the reference distance to obtain a variation difference value;
judging whether the change difference value is larger than or equal to a preset threshold value or not;
if the variation difference is larger than or equal to the preset threshold value, judging that the ranging distance is not equal to the reference distance;
and if the variation difference is smaller than the preset threshold value, judging that the distance measurement distance is equal to the reference distance.
Optionally, the reference distance is the measured distance when the user is not in front of the smart player.
Optionally, the controller executes the processing in a preset time period to determine whether the user is in front of the smart playing device;
the value range of the preset time comprises zero.
Another aspect of the present application provides an intelligent playing device, including: the device comprises a controller, a Digital Signal Processing (DSP) module, a coder Codec, at least one loudspeaker and at least one microphone; wherein:
the controller is configured to execute the smart play method according to any one of the previous aspects of the present application;
the DSP is controlled by the controller and exchanges audio streams with the controller;
the DSP is in communication connection with the Codec, and the Codec is respectively connected with each loudspeaker and each microphone.
According to the technical scheme, the invention provides the intelligent playing method which is applied to the controller in the intelligent playing device. In the intelligent playing method, when the user is not in front of the intelligent playing device, the controller controls the intelligent playing device to pause playing, and the user can be represented to leave when the user is not in front of the intelligent playing device, so that the intelligent playing method can automatically pause playing after the user leaves; when the user is in front of the intelligent playing device, the controller controls the intelligent playing device to continue playing, and the user can represent the user return when the user is not in front of the intelligent playing device, so that the intelligent playing method can automatically continue playing after the user returns; in summary, after the user leaves or returns, even if both hands of the user are occupied, the smart playing device can be controlled to pause or continue playing, so that the smart playing method provided by the application can improve the user experience of the user on the multimedia playing device.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 and fig. 2 are schematic specific flow diagrams of an intelligent playing method provided in an embodiment of the present application, respectively;
FIG. 3 is a flowchart illustrating one embodiment of step S210;
FIG. 4 is a schematic diagram of a time domain signal waveform image obtained when a user is in front of a smart player device;
FIG. 5 is a schematic diagram of a time domain signal waveform image obtained when a user is not in front of the smart player device;
FIG. 6 is a flowchart illustrating specific steps that the smart play method further includes when the user is in front of the smart play device;
FIG. 7 is a flowchart illustrating one embodiment of step S220;
fig. 8 is a schematic structural diagram of an intelligent playback device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In this application, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
In order to improve the user experience of the multimedia playing device, an embodiment of the present application provides an intelligent playing method, which is applied to a controller in an intelligent playing device, and a specific flow of the intelligent playing method is shown in fig. 1, and includes the following steps:
and S110, after controlling the intelligent playing device to play, judging whether the user is in front of the intelligent playing device.
If the user is not in front of the intelligent playing device, executing step S120; if the user is in front of the smart player, step S130 is executed.
In practical application, a user can represent that the user returns before the intelligent playing device, and the user leaves before the intelligent playing device, so that whether the user leaves or returns can be judged by judging whether the user is in front of the intelligent playing device, and the intelligent playing device is correspondingly controlled.
And S120, controlling the intelligent playing device to pause playing.
And S130, controlling the intelligent playing device to continue playing.
Therefore, when the user is not in front of the intelligent playing device, the controller controls the intelligent playing device to pause playing, and the user can be represented to leave when the user is not in front of the intelligent playing device, so that the intelligent playing method can automatically pause playing after the user leaves; when the user is in front of the intelligent playing device, the controller controls the intelligent playing device to continue playing, and the user can represent the user return when the user is not in front of the intelligent playing device, so that the intelligent playing method can automatically continue playing after the user returns; in summary, after the user leaves or returns, even if both hands of the user are occupied, the smart playing device can be controlled to pause or continue playing, so that the smart playing method provided by the application can improve the user experience of the user on the multimedia playing device.
The value is that the user may also indicate that the user does not leave before the smart playing device, and the user may also indicate that the user does not return before the smart playing device, so the smart playing method may also automatically continue playing when the user does not leave, that is: the playback can be continued when the user is not away, and automatically paused when the user is not back, that is: the playing can be paused when the user does not return, so that the use habit of the user is met, and the use experience of the user can be further improved.
In addition, under the epidemic situation, the intelligent playing method reduces the operation by hands, such as eating, so that some infection risks can be avoided; in addition, the intelligent operation method is automatically executed by the controller, and the defects that the control efficiency is low and limited in a limited range and the like caused by the control of a remote controller are overcome.
In another embodiment of the present application, the controller executes the step of determining whether the user is in front of the smart playing device at a preset time period; wherein, the value range of the preset time includes zero, namely: the controller can periodically execute the step of judging whether the user is in front of the intelligent playing device or continuously execute the step of judging whether the user is in front of the intelligent playing device; the value of the preset time is not specifically limited, and may be determined according to specific conditions, and is within the protection scope of the present application.
Another embodiment of the present application provides a specific implementation manner of step S110, and a specific flow thereof is shown in fig. 2, and includes the following steps:
s210, a microphone and a loudspeaker in the intelligent playing device are used for ranging the distance of the obstacle in front of the intelligent playing device, and the ranging distance is obtained.
In another embodiment of the present application, if the smart playing device includes a camera or a distance measuring sensor, the camera or the distance measuring sensor may also be used to measure the distance of the obstacle before the smart playing.
The above two embodiments are only for realizing the distance measurement, and in practical applications, including but not limited to the above embodiments, the embodiments are not specifically limited herein, and are within the scope of the present application.
S220, judging whether the distance measurement distance is equal to the reference distance.
Wherein, the reference distance is the measurement distance when the user is not in front of the smart player, namely: when the user is not in front of the intelligent playing device, the distance from the obstacle in front of the intelligent playing device to the intelligent playing device is the reference distance.
Therefore, when the user is in front of the intelligent playing device, the user can replace the original obstacle, namely the distance measurement distance is reduced and is not equal to the reference distance; when the user is not in front of the intelligent broadcasting equipment, the user can change the distance into an original obstacle, namely, the distance measurement distance is recovered and is equal to the reference distance; thus, if the ranging distance is not equal to the reference distance, step S230 is performed; if the ranging distance is equal to the reference distance, step S240 is performed.
It should be noted that, when the user is not in front of the smart playing device, the obstacle in front of the smart playing device is usually an obstacle that cannot be easily moved; for example, taking a smart television as an example, in a general case, a user may place a smart television close to one side wall of a living room, so that when the user is not in front of the smart playing device, an obstacle in front of the smart playing device is the other side wall opposite to the obstacle, that is, the reference distance is the distance from the other side wall to the smart playing device.
It should be noted that, when the smart playing device is used for the first time, the reference distance needs to be calibrated to ensure that the smart playing device accurately judges whether the user is in front of the smart playing device through the smart playing method; in addition, after a longer time, the use experience of the user can be improved by calibrating the reference distance.
And S230, judging that the user is in front of the intelligent playing device.
And S240, judging that the user is not in front of the intelligent playing device.
The above is only one specific embodiment of step S110, and in practical applications, including but not limited to the above embodiments, the embodiments are not limited herein, and are within the scope of the present application.
In another embodiment of the present application, a specific implementation manner of step S210 is shown in fig. 3, and the specific process includes the following steps:
and S310, controlling a loudspeaker in the intelligent playing device to send out an ultrasonic signal with preset frequency.
Wherein the frequency of the ultrasonic signal is greater than the audible frequency of the human ear, i.e.: 20Hz to 20Khz, so that the normal sound played by the intelligent playing device cannot be influenced, namely the use experience of a user cannot be influenced; in addition, the preset frequency is a preset frequency, and in practical application, the preset frequency can be selected according to practical situations, and is not specifically limited herein.
It should be noted that, if the speaker emits a sound wave signal, that is, the smart playing device is playing at this time, the ultrasonic signal with the preset frequency is embedded into the sound wave signal and is emitted by the speaker together; if the loudspeaker does not send the sound wave signal, namely the intelligent playing device stops playing at the moment, the loudspeaker independently sends an ultrasonic wave signal with preset frequency.
And S320, controlling a microphone in the intelligent playing device to carry out extraction on the ultrasonic signal with the preset frequency to obtain a time domain signal waveform image.
When the ultrasonic signal acquisition device is used, the emitted ultrasonic signal can bounce back when encountering an obstacle, and the amplitude of the ultrasonic signal can be attenuated every time of bouncing, so that when the ultrasonic signal with the preset frequency is acquired, the ultrasonic signal with the preset frequency and different amplitudes can be acquired at different times, as shown in fig. 4 and 5, fig. 4 is a time domain signal waveform image obtained when a user is in front of the intelligent playing device, and fig. 5 is a time domain signal waveform image obtained when the user is not in front of the intelligent playing device.
S330, obtaining the time interval of the ultrasonic signals which are acquired to the preset frequency twice adjacently by analyzing the time domain signal waveform image.
After error elimination in a long time period, in the time domain signal waveform image, the time intervals of the ultrasonic signals acquired twice in the vicinity tend to be consistent and stable at a constant, so that by analyzing the time domain signal waveform image, the time intervals of the ultrasonic signals acquired twice in the vicinity to the preset frequency, that is, the interval between the two signals in fig. 4 or fig. 5, can be obtained.
And S340, determining the distance measurement distance according to the time interval between two adjacent times of the ultrasonic signals with the preset frequency.
Since the ultrasonic signals with the preset frequency are acquired once in the time interval between two adjacent times, the propagation length of the ultrasonic signals is equal to twice of the ranging distance, and therefore the formula for determining the ranging distance is as follows:
L＝1/2×T×C
wherein, L is the distance measurement, T is the time interval, and C is the speed of sound in the air.
The above is only one specific embodiment of step S210, and in practical applications, including but not limited to the above embodiments, the embodiments are not limited herein, and are within the scope of the present application.
The above embodiment is the same as the embodiment for measuring the reference distance, and the description of the embodiment for measuring the reference distance is omitted here.
In another embodiment of the present application, as shown in fig. 6, when the user is in front of the smart play device, the smart play method further includes the following steps:
and S410, converting the time domain signal waveform image into a frequency domain signal waveform image by utilizing Fourier transform.
And S420, analyzing the change characteristics of the frequency waveform area in the frequency domain signal waveform image, and judging the motion characteristics of the user.
And S430, executing corresponding preset operation according to the motion characteristics.
For example, when the controller determines that the user performs the grabbing action, the preset operation may be to control the smart playing device to reduce the volume, and the like, which is not described herein again.
In another embodiment of the present application, a specific implementation manner of step S220 is provided, and a specific flow thereof is shown in fig. 7, which includes the following steps:
and S510, subtracting the ranging distance from the reference distance to obtain a variation difference value.
S520, judging whether the change difference value is larger than or equal to a preset threshold value.
If the variation difference is greater than or equal to the preset threshold, then step S530 is executed; if the variation difference is smaller than the preset threshold, the step S540 is executed.
The preset threshold is preset, and may be set according to an actual situation, which is not specifically limited herein.
It should be noted that, in general, the distance measurement precision is not very high, and when the user leaves, the distance measurement distance may not be completely equal to the reference distance, so that the influence caused by the distance measurement error is overcome by setting the preset threshold value, which not only can ensure that the smart playing device accurately judges whether the user is in front of the smart playing device through the smart playing method, but also can reduce the cost of the smart playing device, and is beneficial to the time duration popularization.
S530, judging that the ranging distance is not equal to the reference distance.
And S540, judging that the ranging distance is equal to the reference distance.
The above is only one specific embodiment of step S220, and in practical applications, including but not limited to the above embodiments, the embodiments are not limited herein, and are within the scope of the present application.
Another embodiment of the present application provides an intelligent playback device, a specific structure of which is shown in fig. 8, and the intelligent playback device specifically includes: a controller AP, a DSP 02(Digital Signal processing) module, a Codec 03 (Codec), at least one speaker 04, and at least one microphone 01.
The controller AP executes the smart play method provided in the above embodiment; the DSP 02 is controlled by the controller AP and exchanges audio streams with the controller AP; the DSP 02 is connected to the Codec 03 in communication, and the Codec 03 is connected to each speaker 04 and each microphone 01, respectively.
It should be noted that the controller AP is usually a CPU of the sampling ARM chip device, which is a mature prior art, and a specific structure thereof is not described here; the DSP 02 can adopt OpenDSP, and is beneficial to the later development and use of developers.
In the above description of the disclosed embodiments, features described in various embodiments in this specification can be substituted for or combined with each other to enable those skilled in the art to make or use the present application. The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any manner. Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make numerous possible variations and modifications to the present teachings, or modify equivalent embodiments to equivalent variations, without departing from the scope of the present teachings, using the methods and techniques disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention, unless the contents of the technical solution of the present invention are departed.
Claims (10)
1. An intelligent playing method is characterized in that a controller applied to an intelligent playing device comprises the following steps:
after controlling the intelligent playing device to play, judging whether a user is in front of the intelligent playing device;
if the user is not in front of the intelligent playing device, controlling the intelligent playing device to pause playing;
and if the user is in front of the intelligent playing device, controlling the intelligent playing device to continue playing.
2. The smart play method according to claim 1, wherein determining whether the user is in front of the smart play device comprises:
measuring the distance of an obstacle in front of the intelligent playing device by using a microphone and a loudspeaker in the intelligent playing device to obtain a distance measurement distance;
judging whether the ranging distance is equal to a reference distance or not;
if the ranging distance is not equal to the reference distance, determining that the user is in front of the intelligent playing device;
and if the distance measurement distance is equal to the reference distance, determining that the user is not in front of the intelligent playing device.
3. The smart playing method according to claim 2, wherein the obtaining a distance measurement distance by measuring a distance measurement for an obstacle in front of the smart playing device using a microphone and a speaker in the smart playing device comprises:
controlling a loudspeaker in the intelligent playing device to send out an ultrasonic signal with a preset frequency;
controlling a microphone in the intelligent playing device to carry out extraction on the ultrasonic signal with the preset frequency to obtain a time domain signal waveform image;
obtaining the time interval of the ultrasonic signals of the preset frequency acquired twice in the adjacent time by analyzing the time domain signal waveform image;
and determining the distance measuring distance according to the time interval.
4. The smart play method according to claim 3, wherein the formula for determining the ranging distance is:
L＝1/2×T×C
wherein L is the distance measurement distance, T is the time interval, and C is the speed of sound in the air.
5. The smart playing method according to claim 3, wherein if the speaker emits a sound wave signal, controlling the speaker in the smart playing device to emit an ultrasonic wave signal with a preset frequency includes:
and embedding the ultrasonic signals with the preset frequency into the sound wave signals, and sending out the signals by the loudspeaker together.
6. The smart play method according to any one of claims 3 to 5, further comprising, when the user is in front of the smart play apparatus:
converting the time domain signal waveform image into a frequency domain signal waveform image by using Fourier transform;
analyzing the change characteristics of the frequency waveform area in the frequency domain signal waveform image to judge the motion characteristics of the user;
and executing corresponding preset operation according to the motion characteristics.
7. The smart play method according to any one of claims 2-5, wherein determining whether the ranging distance is equal to a reference distance comprises:
subtracting the ranging distance from the reference distance to obtain a variation difference value;
judging whether the change difference value is larger than or equal to a preset threshold value or not;
if the variation difference is larger than or equal to the preset threshold value, judging that the ranging distance is not equal to the reference distance;
and if the variation difference is smaller than the preset threshold value, judging that the distance measurement distance is equal to the reference distance.
8. The smart play method according to any one of claims 2 to 5, wherein the reference distance is the measured distance when the user is not in front of the smart play device.
9. The smart play method according to any one of claims 1 to 5, wherein the controller performs the step of determining whether the user is in front of the smart play device at a preset time period;
the value range of the preset time comprises zero.
10. An intelligent playing device, comprising: the device comprises a controller, a Digital Signal Processing (DSP) module, a coder Codec, at least one loudspeaker and at least one microphone; wherein:
the controller is used for executing the intelligent playing method according to any one of claims 1-9;
the DSP is controlled by the controller and exchanges audio streams with the controller;
the DSP is in communication connection with the Codec, and the Codec is respectively connected with each loudspeaker and each microphone.
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