CN114005442A - Projector, and awakening system and method of projector - Google Patents
Projector, and awakening system and method of projector Download PDFInfo
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- CN114005442A CN114005442A CN202111261265.3A CN202111261265A CN114005442A CN 114005442 A CN114005442 A CN 114005442A CN 202111261265 A CN202111261265 A CN 202111261265A CN 114005442 A CN114005442 A CN 114005442A
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- 230000002618 waking effect Effects 0.000 claims description 11
- 238000012545 processing Methods 0.000 claims description 9
- 230000003321 amplification Effects 0.000 claims description 6
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 6
- 238000011084 recovery Methods 0.000 claims description 6
- 230000006399 behavior Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 2
- 230000005236 sound signal Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L15/00—Speech recognition
- G10L15/22—Procedures used during a speech recognition process, e.g. man-machine dialogue
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L15/00—Speech recognition
- G10L15/22—Procedures used during a speech recognition process, e.g. man-machine dialogue
- G10L2015/223—Execution procedure of a spoken command
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- Signal Processing (AREA)
- Computational Linguistics (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Projection Apparatus (AREA)
- Controls And Circuits For Display Device (AREA)
Abstract
The invention provides a projector, a wake-up system and a wake-up method of the projector, and relates to the technical field of intelligent control of the projector, wherein the wake-up method of the projector comprises the following steps: collecting a human voice analog signal in a preset range; analyzing the human voice analog signal; and judging whether the voice analog signal is consistent with a preset awakening word or not, if so, awakening the GPIO pin to access a high level, and awakening the main control unit. The awakening method of the projector solves the problem that the power consumption of the main control unit is large when the projector is in standby in the prior art.
Description
Technical Field
The invention relates to the technical field of projector intelligent control, in particular to a projector, and a system and a method for waking up the projector.
Background
With the technology of LCD and DLP projectors becoming mature day by day, in order to make projection products have better user experience, all mainstream projection manufacturers at present take far-field voice function as a big selling point to realize voice interaction without remote control;
however, the existing far-field voice technology does not realize a real standby awakening function, but is turned off to awaken, namely, in a starting state, a light source is turned off, so that nothing is displayed on a projection screen, a consumer is misled to think that the remote voice is in a real standby state, and a common projector is provided with a battery, so that the electric quantity of the battery is quickly exhausted in the scene, and the battery endurance time is influenced; in addition, according to the traditional far-field voice scheme, noise reduction, awakening and voice recognition are all centralized on the main chip end of the projector for processing, and under the multi-application scene, the system can be blocked, the process is stopped, and even the projector is automatically restarted.
Disclosure of Invention
The invention aims to provide a projector, a projector awakening system and a projector awakening method, and the projector awakening method can solve the problem that a main control unit is high in power consumption when the projector is in standby in the prior art.
In order to achieve the above purpose, the invention provides the following technical scheme:
the embodiment of the invention provides a method for waking up a projector, which specifically comprises the following steps:
collecting a human voice analog signal in a preset range;
analyzing the human voice analog signal;
and judging whether the voice analog signal is consistent with a preset awakening word or not, if so, awakening the GPIO pin to access a high level, and awakening the main control unit.
On the basis of the technical scheme, the invention can be further improved as follows:
judging whether the voice analog signal is consistent with a preset awakening word or not comprises the following steps:
and storing the preset awakening words.
Further, after waking up the main control unit, the method for waking up the projector further includes:
acquiring a human voice analog signal in a preset range through a microphone unit;
converting the human voice analog signal into a digital signal;
acquiring a recovery signal;
processing the digital signal based on the extraction signal;
and analyzing the processed digital signal and executing corresponding behavior and voice feedback.
Further, processing the digital signal based on the extraction signal includes:
identifying a state of the microphone;
if the microphone is in a closed state, waiting for the microphone to be turned on;
and if the microphone is in an open state, analyzing the processed digital signal.
A wake-up system for a projector, comprising:
the microphone unit is used for acquiring a human voice analog signal;
the main control unit is used for awakening the projector;
and the voice awakening unit is connected with the microphone unit and the main control unit and used for judging whether the voice analog signal is consistent with a preset awakening word or not, if so, awakening the GPIO pin to access a high level and awakening the main control unit.
Furthermore, the awakening system further comprises a storage unit, wherein the storage unit is connected with the voice awakening unit and used for storing preset awakening words.
Furthermore, the wake-up system of the projector further comprises a power amplification unit, wherein the power amplification unit is connected with the voice wake-up unit and is used for sending a recovery signal to the voice wake-up unit;
the voice wake-up unit is further configured to:
converting the human voice analog signal into a digital signal, and processing the digital signal based on an extraction signal;
identifying a state of the microphone;
if the microphone is in a closed state, waiting for the microphone to be turned on;
and if the microphone is in an open state, analyzing the processed digital signal.
Further, the master control unit is further configured to:
and analyzing the processed digital signal and executing corresponding behavior and voice feedback.
Further, the microphone unit comprises at least one microphone for acquiring a human voice analog signal.
A projector comprises the wake-up system of the projector.
The invention has the following advantages:
the awakening method of the projector acquires the human voice analog signal within a preset range in the standby state of the projector; analyzing the human voice analog signal; and judging whether the voice analog signal is consistent with a preset awakening word or not, if so, awakening the GPIO pin to access a high level, awakening the main control unit, and if not, awakening the GPIO pin to access a low level, and not awakening the main control unit. When the voice analog signal consistent with the preset awakening word is not acquired in the preset range, awakening the GPIO pin to access a low level, enabling the main control unit to be in an un-awakened state, and enabling standby power consumption to be lower than 0.5W; the problem of the main control unit consumption is great when the projecting apparatus standby among the prior art is solved.
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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 introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a flowchart of a wake-up method for a projector according to the present invention;
FIG. 2 is a flowchart of a wake-up method for a projector according to the present invention;
FIG. 3 is an architecture diagram of a wake-up system for a projector according to the present invention;
FIG. 4 is an architecture diagram of a wake-up system for a projector according to the present invention;
fig. 5 is a schematic diagram of a wake-up circuit of a projector according to the present invention.
The device comprises a microphone unit 10, a main control unit 20, a voice awakening unit 30, a storage unit 40 and a power amplification unit 50.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. 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 invention.
Fig. 1 is a flowchart of an embodiment of a method for waking up a projector according to the present invention, and as shown in fig. 1, the method for waking up a projector according to the embodiment of the present invention includes the following steps:
s20, collecting a human voice analog signal within a preset range;
specifically, the microphone unit 10 is used for collecting the human voice analog signal, the microphone unit 10 includes at least one microphone for collecting the human voice analog signal, and in this embodiment, the microphone unit 10 includes a 4-way Microphone (MIC) for collecting the human voice analog signal.
S21, analyzing the human voice analog signal;
specifically, the human voice analog signal is analyzed by the voice wakeup unit 30.
S22, judging whether the voice analog signal is consistent with the preset awakening word, if so, awakening the GPIO pin to access high level, and awakening the main control unit;
specifically, the voice wake-up unit 30 determines whether the voice analog signal is consistent with a preset wake-up word, and if the voice analog signal is consistent with the preset wake-up word, wakes up the GPIO pin to access a high level to wake up the main control unit 20;
if the human voice analog signal is not consistent with the preset wake-up word, the GPIO pin is woken up to access the low level, and the main control unit 20 is not woken up.
Presetting a wake-up word through the storage module storage, when the microphone unit 10 collects the voice analog signal, the voice wake-up unit 30 compares the collected voice analog signal with the presetting wake-up word, so as to output wake-up GPIO, if the voice analog signal is consistent with the presetting wake-up word, the GPIO pin is woken up to be connected with a high level, the main control unit 20 is woken up, the main control unit 20 works, and the projector finishes a standby state.
Fig. 2 is a flowchart of an embodiment of a wake-up method for a projector according to the present invention, and as shown in fig. 2, the wake-up method for a projector according to the present invention includes the following steps:
s30, collecting a human voice analog signal within a preset range;
specifically, the microphone unit 10 includes at least one microphone for acquiring the human voice analog signal by acquiring the human voice analog signal through the microphone unit 10, and in this embodiment, the microphone unit 10 includes a 4-way Microphone (MIC) for acquiring the human voice analog signal.
S31, converting the human voice analog signal into a digital signal;
specifically, the voice wake-up unit 30 converts the human voice analog signal into a digital signal, where the digital signal indicates that the independent variable is discrete and the dependent variable is also discrete, the independent variable of the signal is represented by an integer, and the dependent variable is represented by one of finite numbers.
S32, acquiring a recovery signal;
specifically, SPK1_ P and SPK1_ N, SPK2_ P and SPK2_ N are used as left and right loudspeaker recovery signals, SPK is an abbreviation of spearker, is a reserved interface of an external loudspeaker, and can directly push the passive small sound box. The projector is internally provided with a power amplifier circuit and an audio line input interface, and HMDI audio of a computer can be directly output from the interface after being amplified by the power amplifier.
The hardware interfaces between different devices and components in the physical interface system. With the rapid development of science and technology and the social progress, the requirement of not only facilitating the network access of the existing computer but also interconnecting the various networks which exist at present to form a larger computer network has been gradually raised.
The audio signal converted from the human voice analog signal is amplified by the power amplifying unit 50 to obtain the extraction signal, and the signal is extracted by the left and right loudspeakers.
S33, processing the digital signal based on the extraction signal;
specifically, the voice wake-up unit 30 compares and analyzes the digital signal based on the extraction signal, and outputs the processed digital signal. Identifying a state of the microphone; if the microphone is in a closed state, waiting for the microphone to be turned on; and if the microphone is in an open state, analyzing the processed digital signal.
And S34, analyzing the processed digital signal and executing corresponding behaviors and voice feedback.
Specifically, the projector can support voice input of a user, Query a result corresponding to Query according to a Query (Query) input by the user, generate feedback information of the Query according to the Query result, convert the feedback information from text to voice (textto speech; TTS), and finally feed back the voice feedback information to the user. For example, for a similar Query of "how today's weather is", the corresponding feedback information may be "today's weather (sunny), daytime high temperature (35 degrees), nighttime low temperature (22 degrees), weather (hot), attention (sun block)". The information outside the brackets can be regarded as the content of the feedback template, and the information inside the brackets can be the Query result according to Query.
Fig. 3 is a flowchart of an embodiment of a wake-up system of a projector according to the present invention, and as shown in fig. 3, the wake-up system of the projector according to the embodiment of the present invention includes:
a microphone unit 10 for collecting a human voice analog signal; the microphone unit 10 comprises at least one microphone for picking up a human voice analog signal. In the present embodiment, the microphone unit 10 includes a 4-way Microphone (MIC) for collecting a human voice analog signal.
A main control unit 20 for waking up the projector;
and the voice awakening unit 30 is connected with the microphone unit 10 and the main control unit 20 and is used for judging whether the voice analog signal is consistent with a preset awakening word or not, if so, awakening the GPIO pin to access a high level and awakening the main control unit 20.
Judging whether the voice analog signal is consistent with a preset awakening word or not through the voice awakening unit 30, if so, awakening the GPIO pin to access a high level, and awakening the main control unit 20;
if the human voice analog signal is not consistent with the preset wake-up word, the GPIO pin is woken up to access the low level, and the main control unit 20 is not woken up.
The awakening system further comprises a storage unit 40, wherein the storage unit 40 is connected with the voice awakening unit 30 and is used for storing preset awakening words. When the microphone unit 10 collects the voice analog signal, the voice wake-up unit 30 compares the collected voice analog signal with a preset wake-up word, so as to output a wake-up GPIO, if the voice analog signal is consistent with the preset wake-up word, the GPIO pin is woken up to access a high level, the main control unit 20 is woken up, the main control unit 20 works, and the projector finishes a standby state.
Fig. 4 is a flowchart of an embodiment of a wake-up system of a projector according to the present invention, and as shown in fig. 4, the wake-up system of the projector according to the embodiment of the present invention includes:
a microphone unit 10 for collecting a human voice analog signal; the microphone unit 10 comprises at least one microphone for picking up a human voice analog signal.
A power amplification unit 50 for acquiring an extraction signal; SPK1_ P and SPK1_ N, SPK2_ P and SPK2_ N are used as left and right loudspeaker recovery signals, SPK is an abbreviation of spearker, is a reserved interface of an external loudspeaker and can directly push a passive small sound box. The display has power amplifier circuit and audio line input interface, and the audio output of computer can be directly connected to the interface. The audio signal converted from the human voice analog signal is amplified by the power amplifying unit 50 to obtain the extraction signal, and the signal is extracted by the left and right loudspeakers. The model of the power amplifying unit 50 includes, but is not limited to, AD52060.
The voice awakening unit 30 is connected with the microphone unit 10 and the power amplification unit 50, and is used for converting the human voice analog signal into a digital signal and processing the digital signal based on the extraction signal; the model of the voice wakeup unit 30 includes, but is not limited to, TH 1520.
And the main control unit 20 is connected to the voice wake-up unit 30, and is configured to analyze the processed digital signal and perform corresponding behavior and voice feedback. The model of the master control unit 20 includes, but is not limited to, HV 351.
The projector can support voice input of a user, Query a result corresponding to Query according to Query (Query) input by the user, generate feedback information of the Query according to the Query result, convert the feedback information from text to voice (TextToSpeech; TTS), and finally feed back the voice feedback information to the user. For example, for a similar Query of "how today's weather is", the corresponding feedback information may be "today's weather (sunny), daytime high temperature (35 degrees), nighttime low temperature (22 degrees), weather (hot), attention (sun block)". The information outside the brackets can be regarded as the content of the feedback template, and the information inside the brackets can be the Query result according to Query.
The awakening system further comprises a storage unit 40, wherein the storage unit 40 is connected with the voice awakening unit 30 and is used for storing preset awakening words. The storage unit 40 includes, but is not limited to, 4M Flash.
Fig. 5 is a schematic diagram of a wake-up circuit of a projector, as shown in fig. 5, SB signals DM and DP are used to transmit voice digital signals, IO _ CNT is provided as a wake-up signal to a main control chip, SPK1_ P and SPK1_ N, SPK2_ P and SPK2_ N are provided as left and right horn echo signals, IO _ CNT is provided as a wake-up signal to a main control chip, and UART1RXD and UART1TXD are used as communication signals of a main chip and a voice chip of the projector. A Universal Asynchronous Receiver Transmitter (UART) is commonly known. It converts data to be transmitted between serial communication and parallel communication. As a chip for converting a parallel input signal into a serial output signal, the UART is usually integrated into a connection of other communication interfaces.
The embodied objects are embodied as separate modular chips or as peripheral devices integrated into the microprocessor 601. The standard signal amplitude conversion chip is generally in RS-232C specification, is matched with a standard signal amplitude conversion chip such as MAXim 232, and serves as an interface for connecting external equipment. A product in which a synchronous serial signal conversion circuit is added to a UART is called USART.
The projector includes a wake-up system for the projector.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium, such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods of the various embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A method for waking up a projector is characterized by specifically comprising the following steps:
collecting a human voice analog signal in a preset range;
analyzing the human voice analog signal;
and judging whether the voice analog signal is consistent with a preset awakening word or not, if so, awakening the GPIO pin to access a high level, and awakening the main control unit.
2. The method of claim 1, wherein determining whether the human voice analog signal is consistent with a preset wake-up word comprises:
and storing the preset awakening words.
3. The method for waking up a projector according to claim 1, wherein after waking up the main control unit, the method for waking up a projector further comprises:
acquiring a human voice analog signal in a preset range through a microphone unit;
converting the human voice analog signal into a digital signal;
acquiring a recovery signal;
processing the digital signal based on the extraction signal;
and analyzing the processed digital signal and executing corresponding behavior and voice feedback.
4. The method of claim 3, wherein processing the digital signal based on the extraction signal comprises:
identifying a state of the microphone unit;
if the microphone unit is in a closed state, waiting for the microphone to be opened;
and if the microphone unit is in the opening state, analyzing the processed digital signal.
5. A wake-up system for a projector, comprising:
the microphone unit is used for acquiring a human voice analog signal;
the main control unit is used for awakening the projector;
and the voice awakening unit is connected with the microphone unit and the main control unit and used for judging whether the voice analog signal is consistent with a preset awakening word or not, if so, awakening the GPIO pin to access a high level and awakening the main control unit.
6. The wake-up system of a projector according to claim 5, further comprising a storage unit, wherein the storage unit is connected to the voice wake-up unit and is configured to store a preset wake-up word.
7. The wake-up system of a projector according to claim 6, further comprising a power amplification unit, connected to the voice wake-up unit, for sending an extraction signal to the voice wake-up unit;
the voice wake-up unit is further configured to:
converting the human voice analog signal into a digital signal, and processing the digital signal based on an extraction signal;
identifying a state of the microphone;
if the microphone is in a closed state, waiting for the microphone to be turned on;
and if the microphone is in an open state, analyzing the processed digital signal.
8. The wake-up system for a projector as claimed in claim 5, wherein the main control unit is further configured to:
and analyzing the processed digital signal and executing corresponding behavior and voice feedback.
9. Wake-up system for a projector according to claim 5, characterized in that the microphone unit comprises at least one microphone for picking up a human voice analog signal.
10. A projector characterized by comprising a wake-up system of a projector according to any of claims 5 to 9.
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| CN202111261265.3A CN114005442A (en) | 2021-10-28 | 2021-10-28 | Projector, and awakening system and method of projector |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111261265.3A CN114005442A (en) | 2021-10-28 | 2021-10-28 | Projector, and awakening system and method of projector |
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| CN114005442A true CN114005442A (en) | 2022-02-01 |
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| CN202111261265.3A Pending CN114005442A (en) | 2021-10-28 | 2021-10-28 | Projector, and awakening system and method of projector |
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