CN113132793A - Far-field voice control method, smart television, far-field voice module and connecting line - Google Patents
Far-field voice control method, smart television, far-field voice module and connecting line Download PDFInfo
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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
- H04N21/439—Processing of audio elementary streams
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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
- H04N21/41—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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- 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
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/4363—Adapting the video stream to a specific local network, e.g. a Bluetooth® network
- H04N21/43632—Adapting the video stream to a specific local network, e.g. a Bluetooth® network involving a wired protocol, e.g. IEEE 1394
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/443—OS processes, e.g. booting an STB, implementing a Java virtual machine in an STB or power management in an STB
- H04N21/4436—Power management, e.g. shutting down unused components of the receiver
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Abstract
The invention discloses a far-field voice control method, a smart television, a far-field voice module and a connecting wire, wherein the far-field voice control method comprises the following steps: detecting the connection state of a far-field voice module; and when the far-field voice module is detected to be connected, the far-field voice mode is started, and the USB interface is controlled to supply power to the far-field voice module. According to the invention, the main chip of the smart television, the far-field voice module and the connecting line are improved, so that the far-field voice module and the USB interface are flexibly switched, and the problem of universality of a far-field voice structure is solved.
Description
Technical Field
The invention relates to the field of smart television application, in particular to a far-field voice control method, a smart television, a far-field voice module and a connecting wire.
Background
With the development of AI technology, people are increasingly strongly demanding on intelligent AI devices; in the intelligent AI device, voice interaction has become an important entrance for human-computer interaction; for television, common interaction methods are: the television is interacted with the voice remote controller, however, the voice interaction mode needs to be based on the use of the remote controller, the capability of solving the problem is limited, and the intelligent effect is obviously insufficient.
In order to realize the intelligent voice interaction function, a far-field voice technology is applied; among the existing televisions that use far-field speech, there are mainly two far-field speech techniques: one is to adopt a built-in far-field voice technology, which needs ingenious structure and acoustic design and needs different designs aiming at different models, so the universality is poor; in addition, an external far-field speech technology is adopted, and a DSP (Digital Signal Processing) module needs to be additionally added to the technology, so that the cost is increased, and therefore, the technology is not beneficial to application of middle and low-end products.
Accordingly, the prior art is yet to be improved and developed.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a far-field voice control method, an intelligent television, a far-field voice module and a connecting line aiming at the defects of the prior art, wherein the far-field voice control method is used for realizing flexible switching between the far-field voice module and a USB interface by improving a main chip of the intelligent television, the far-field voice module and the connecting line, and solving the problem of universality of a far-field voice structure.
The technical scheme adopted by the invention for solving the technical problem is as follows:
in a first aspect, the present invention provides a far-field speech control method, which is applied to a smart television, wherein the far-field speech control method includes the following steps:
detecting the connection state of a far-field voice module;
and when the far-field voice module is detected to be connected, the far-field voice mode is started, and the USB interface is controlled to supply power to the far-field voice module.
Further, the detecting the connection state of the far-field speech module specifically includes the following steps:
judging whether the level of a signal detection end in the USB interface is high level;
and when the far-field speech module is in a high level, judging that the far-field speech module is connected.
Further, when it is detected that the far-field speech module is connected, the far-field speech mode is turned on, and the USB interface is controlled to supply power to the far-field speech module, specifically including the steps of:
when the far-field voice module is detected to be connected, the far-field voice mode and a human-computer interaction interface are started;
setting a clock signal end in the USB interface as output so as to output a clock signal to the far-field voice module;
and setting a data signal end in the USB interface as an input so as to receive the digital signal sent by the far-field voice module.
Further, the far-field speech control method further comprises the following steps:
and entering a normal mode when the far-field voice module connection is not detected.
In a second aspect, the present invention provides a smart tv, including: the USB interface is connected with the main chip;
the main chip is used for detecting the connection state of the far-field voice module; the far-field voice module is used for starting a far-field voice mode and controlling a USB interface to supply power to the far-field voice module when the connection of the far-field voice module is detected;
the USB interface is used for supplying power to the far-field voice module; and the far-field voice module is used for receiving the digital signal sent by the far-field voice module.
Further, the USB interface includes: a signal detection terminal and a power supply terminal;
the signal detection end is used for detecting the connection state of the far-field voice module;
the power supply end is used for supplying power to the far-field voice module.
In a third aspect, the invention provides a far-field voice module, which is connected with a smart television and comprises a voice signal processing unit and a power supply unit, wherein the power supply unit is connected with the far-field voice module; the power supply unit is connected with a USB interface of the intelligent television in a matching manner, and the power supply unit is connected with the voice signal processing unit;
the power supply unit includes: a signal detection terminal and a power supply terminal; the signal detection end and the power supply end are respectively connected with a USB interface of the intelligent television in a matching mode.
Further, the power supply unit further includes: the microphone power supply device comprises a microphone power supply chip, a first capacitor and a second capacitor; the input end of the microphone power supply chip is connected with the power supply end, and the output end of the microphone power supply chip is connected with the voice signal processing unit; one end of the first capacitor is grounded, and the other end of the first capacitor is connected with the input end of the microphone power supply chip; one end of the second capacitor is grounded, and the other end of the second capacitor is connected with the output end of the microphone power supply chip.
Further, the far-field speech module further comprises: the connecting line is used for transmitting signals and supplying power to the far-field voice module; one end of the connecting wire is connected with the USB interface of the intelligent television in a matching mode, and the other end of the connecting wire is connected with the power supply unit.
In a fourth aspect, the invention provides a connecting wire, wherein one end of the connecting wire is connected with a far-field voice module, and the other end of the connecting wire is connected with an intelligent television; one end of the connecting wire connected with the far-field voice module is matched with a power supply unit of the far-field voice module; and one end of the connecting wire connected with the intelligent television is matched with a USB interface of a power supply unit of the intelligent television.
The invention adopts the technical scheme and has the following effects:
according to the invention, the main chip of the smart television, the far-field voice module and the connecting line are improved, so that the far-field voice module and the USB interface are flexibly switched, and the problem of universality of a far-field voice structure is solved.
Drawings
Fig. 1 is a flow chart of a far-field speech control method in an embodiment of the present invention.
Fig. 2 is a functional block diagram of an intelligent television in the embodiment of the present invention.
Fig. 3 is a circuit diagram of a USB interface of the smart television according to the embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a far-field speech module in an embodiment of the present invention.
Fig. 5 is a circuit diagram (one) of a power supply unit according to an embodiment of the present invention.
Fig. 6 is a circuit diagram of a power supply unit according to a second embodiment of the present invention.
Fig. 7 is a circuit diagram of a microphone subunit according to an embodiment of the present invention.
Fig. 8 is a circuit diagram of a microphone subunit according to the second embodiment of the present invention (second embodiment).
Fig. 9 is a circuit diagram of a clock signal subunit in an embodiment of the invention.
Fig. 10 is a schematic circuit diagram of an LED display lamp according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example one
As shown in fig. 1, the present embodiment provides a far-field speech control method applied to a smart television, which includes the following steps:
step S100, detecting the connection state of a far-field voice module;
and step S200, when the far-field voice module is detected to be connected, starting a far-field voice mode, and controlling a USB interface to supply power to the far-field voice module.
In this embodiment, the smart television detects the connection state of the far-field voice module in real time, and starts the far-field voice mode according to the connection state of the far-field voice module; and when the far-field voice module is detected to be connected, the far-field voice mode is started, and a USB interface is controlled to supply power to the far-field voice module, so that the far-field voice module works, and digital signals sent by the far-field voice module are received through the USB interface.
Specifically, whether the far-field voice module is connected or not is determined by judging whether the level of a signal detection end in the USB interface is high level or not, when the level is high level, the far-field voice module is judged to be connected, at the moment, the far-field voice mode is started by the smart television, and a human interaction interface is displayed in a display screen.
Specifically, in the step 100, the following steps are specifically included:
step 110, judging whether the level of a signal detection end in the USB interface is a high level;
and step 120, when the level is high, judging that the far-field voice module is connected.
In the far-field voice mode, the smart television sets a clock signal terminal (i.e., DMIC _ CLK) in the USB interface as an output terminal, that is, sets PIN8 (shown as PIN8 in fig. 3) in the USB interface as an output port for outputting a clock signal, so as to send the clock signal to the far-field voice module through the clock signal terminal; meanwhile, the smart television also sets the DATA signal terminals (i.e., DMIC _ DATA1 and DMIC _ DATA2) in the USB interface as input terminals, that is, sets the PIN5 (shown as PIN5 in fig. 3) and the PIN6 (shown as PIN6 in fig. 3) in the USB interface as input ports for inputting digital signals, so as to receive the digital signals transmitted by the far-field voice module through the DATA signal terminals.
Specifically, the step 200 specifically includes the following steps:
step 210, when the far-field voice module is detected to be connected, starting the far-field voice mode and a human-computer interaction interface;
step 220, setting a clock signal end in the USB interface as an output to output a clock signal to the far-field voice module;
step 230, setting the data signal end in the USB interface as an input to receive the digital signal sent by the far-field speech module.
In this embodiment, the digital signal sent by the far-field speech module is a converted signal, that is, the digital signal is a converted signal of the speech signal to be acquired by the far-field speech module, where the digital signal may be a PDM format signal.
Of course, in another implementation manner of this embodiment, the far-field speech control method further includes the following steps:
and step S300, when the far-field voice module connection is not detected, entering a normal mode.
Specifically, when the smart television detects that the level of a signal detection end in the USB interface is a low level, it is determined that the far-field speech module is not connected to the smart television; at this time, the normal mode is entered.
In the normal mode, the smart television closes the far-field voice mode and closes the interpersonal interaction interface; meanwhile, the smart television sets the clock signal terminal (i.e. the DMIC _ CLK signal terminal) of the USB interface to a high-impedance state (i.e. a non-conducting state), i.e. turns off the PIN8 in the USB interface to prevent the clock signal from being output; setting DATA signal terminals (namely DMIC _ DATA1 and DMIC _ DATA2) in the USB interface to be in a high-impedance state, namely turning off PIN5 and PIN6 in the USB interface so as to prevent DATA input; thus, neither a clock signal can be transmitted nor incoming data can be received.
In this embodiment, the connection state of the far-field voice module is detected based on the main chip of the smart television, and the far-field voice module is controlled according to the connection state of the far-field voice module; according to the far-field voice control method, the far-field voice mode and the normal mode can be flexibly switched, so that the problem that the universality of the structure of the far-field voice module and the structure of the intelligent television is poor is solved.
Example two
As shown in fig. 2, the present embodiment provides an intelligent television, which is characterized by including: the USB interface 20 is connected with the main chip 10;
the main chip 10 is used for detecting the connection state of the far-field voice module; and is used for starting a far-field voice mode and controlling the USB interface 20 to supply power to the far-field voice module when the connection of the far-field voice module is detected;
the USB interface 20 is used for supplying power to the far-field voice module; and the far-field voice module is used for receiving the digital signal sent by the far-field voice module.
Specifically, as shown in fig. 3, the USB interface 20 includes: an LED control signal terminal (DMIC _ LED, i.e., PIN9 shown in the figure), a clock signal terminal (DMIC _ CLK, i.e., PIN8 shown in the figure), a signal detection terminal (DMIC _ DET, i.e., PIN7 shown in the figure), a first DATA signal terminal (DMIC _ DATA1, i.e., PIN6 shown in the figure), a second DATA signal terminal (DMIC _ DATA2, i.e., PIN5 shown in the figure), and a power supply terminal (5V power supply terminal, i.e., PIN1 shown in the figure);
the LED control signal end is used for outputting an LED control signal to the far-field voice module;
the clock signal end is used for outputting a clock signal to the far-field voice module;
the signal detection end is used for detecting the connection state of the far-field voice module;
the first data signal end and the second data signal end are used for receiving digital signals sent by the far-field voice module;
the power supply end is used for supplying power to the far-field voice module.
Of course, the USB interface 20 is also provided with a terminal for connecting with the USB in the normal mode, for example, a connection terminal such as USBC _ D-, USBC _ D +, and a ground terminal GND.
In this embodiment, the USB interface is an improved USB3.0 interface, and the structure of the USB interface is different from that of a general USB3.0 interface, and this embodiment improves the internal circuit structure of the USB interface, and the improved USB3.0 interface can receive the digital signal sent by the far-field speech module, thereby implementing the function of far-field speech.
EXAMPLE III
As shown in fig. 4, this embodiment provides a far-field speech module, where the far-field speech module is connected to a smart television, and the far-field speech module includes: a voice signal processing unit 100 and a power supply unit 200; the power supply unit 200 is connected to the USB interface of the smart television in a matching manner, and the power supply unit 200 is connected to the voice signal processing unit 100.
In this embodiment, the power supply unit 200 is configured to supply power to the voice signal processing unit 100, and the voice signal processing unit 100 is configured to acquire a voice signal and convert the voice signal into a digital signal, so as to send the digital signal to the smart television, so that a main chip of the smart television can process the digital signal.
In this embodiment, the far-field voice module further includes a connection line 400, and the connection line 400 is mainly used for transmitting a digital signal, a control signal, and a voltage signal between the smart television and the far-field voice module, so as to implement far-field signal transmission, and meanwhile, the far-field voice module is compatible with a USB function; namely, a USB interface is arranged at one end of the connection line 400, and the USB interface is connected with the USB interface of the smart television in a matching manner; and the other end of the connection line 400 is integrally connected to the power supply unit 200.
Specifically, as shown in fig. 6, the power supply unit 200 includes: a first DATA signal terminal (DMIC _ DATA1, i.e., PIN5 shown in fig. 6), a second DATA signal terminal (DMIC _ DATA2, i.e., PIN6 shown in fig. 6), a signal detection terminal (DMIC _ DET, i.e., PIN7 shown in fig. 6), a clock signal terminal (DMIC _ CLK, i.e., PIN8 shown in fig. 6), an LED control signal terminal (DMIC _ LED, i.e., PIN9 shown in fig. 6), and a power supply terminal (5V power supply terminal, i.e., PIN1 shown in fig. 6); the first data signal end, the second data signal end, the signal detection end, the clock signal end, the LED control signal end and the power supply end are respectively connected with a USB interface of the intelligent television in a matching mode.
As shown in fig. 6, in the present embodiment, the PIN1 (PIN 1) of the power supply unit 200 (PV 1 shown in the figure) is a 5V power supply PIN, and provides a 5V power supply for the power supply unit 200, and the PIN1 corresponds to the PIN1 (shown in fig. 3) connected to the USB interface in the smart television, and introduces the 5V power supply supplied by the smart television; the PINs 2 (PIN 2), 3 (PIN 3) and 4 (PIN 4) are GND (ground PINs) and respectively correspond to USBC _ D-, USBC _ D + and GND of the USB interface of the smart television (as shown in fig. 3); the PIN4 (PIN 4) of the power supply unit 200 is connected with the PIN4 (shown in FIG. 3) of the USB interface of the smart television; under the connection of the connection line 400, the PINs 2 and 3 of the power supply unit 200 are actually connected to the iron shell of the USB interface of the smart tv, and are grounded and effectively shield useful signals, so that the power supply unit does not occupy the data port of the USB interface of the smart tv.
The PIN5 (PIN 5), the PIN6 (PIN 6) and the PIN8 (PIN 8) of the power supply unit 200 correspond to the PIN5, the PIN6 and the PIN8 (shown in fig. 3) connected to the USB interface of the smart television, respectively; transmitting a microphone digital signal and a clock signal by utilizing a high-speed data port of a USB interface of the intelligent television; the PIN7 (PIN 7) of the power supply unit 200 is connected to the PIN7 (as shown in fig. 3) of the USB interface of the smart tv, the PIN7 is a microphone detection PIN, and defaults to a pull-up setting at the far-field voice module end, and defaults to a pull-down setting at the smart tv main chip end, and the PIN7 is a ground PIN in a general USB interface.
The RN101 and the RN102 (shown in FIG. 3) of the USB interface of the intelligent television are grounded, and under the default condition, the USB function is kept and normal grounding is carried out; when the far-field voice module is connected with the smart television, the RV20 (shown in fig. 6) of the power supply unit 200 is pulled up to 3V3, and at this time, software of the smart television detects high level enable, turns on a far-field voice mode, and performs pop-up window reminding; when a far-field voice function is started, the intelligent television sets the PIN5 and the PIN6 of the USB interface of the intelligent television as data input ports through which digital signals are received; and, PIN8 of its own USB interface is set as an output port to output a clock signal to the far-field speech module through the output port.
The PIN9 (PIN 9) of the power supply unit 200 is connected to the PIN9 of the USB of the smart television, and the signal output by the GPIO is encoded by the smart television, so that the single GPIO controls the multi-state display of 4 LED display lamps 300, and the problem of insufficient signal lines connected with a USB port is effectively solved.
Specifically, as shown in fig. 5, the power supply unit 200 further includes: a microphone power chip (i.e., UV5 shown in fig. 5), a first capacitor (i.e., CV30 shown in fig. 5), and a second capacitor (i.e., CV31 shown in fig. 5); the input end of the microphone power supply chip is connected with the power supply end, and the output end of the microphone power supply chip is connected with the voice signal processing unit 100; one end of the first capacitor is grounded, and the other end of the first capacitor is connected with the input end of the microphone power supply chip; one end of the second capacitor is grounded, and the other end of the second capacitor is connected with the output end of the microphone power supply chip.
In this embodiment, the output voltage of the microphone power supply chip is 3V; the microphone power supply chip is configured to convert a 5V voltage input by the power supply terminal into a 3V voltage, so as to supply power to the voice signal processing unit 100 through the 3V voltage.
In this embodiment, the far-field speech module further includes: the LED display lamp 300, the LED display lamp 300 is connected with the power supply end of the power supply unit 200;
specifically, as shown in fig. 10, the LED display lamp 300 includes: a first resistor (i.e. RV28 shown in fig. 10), a second resistor (i.e. RV27 shown in fig. 10), a triode (i.e. QV2 shown in fig. 10), and LED chips (i.e. four chips of DV08, DV09, DV10, and DV11 shown in fig. 10); the first end of the triode is connected with the power supply end of the power supply unit 200, the second end of the triode is connected with the LED control signal end of the power supply unit 200, and the third end of the triode is connected with the LED chip; one end of the first resistor is connected with the power supply end of the power supply unit 200, and the other end of the first resistor is connected with the second end of the triode; one end of the second resistor is grounded, and the other end of the second resistor is connected with the third end of the triode.
The DVs 08, DV09, DV10 and DV11 are four RGB three-color LED lamps, and the four LEDs can be controlled by arranging a GPIO DMIC _ LED to realize multi-state display; the DMIC _ LED outputs a control signal to each LED display lamp 300 according to a specific coding rule, and the LED display lamps 300 can show different colors after receiving a specific signal, so as to remind a user of a current voice state.
In this embodiment, the voice signal processing unit 100 is connected to the microphone power supply chip, and the voice signal processing unit 100 is powered by the microphone power supply chip; also, the voice signal processing unit 100 and the DMIC _ DATA2 of the power supply unit 200 to transmit the output digital signal to the DMIC _ DATA 2; the voice signal processing unit 100 is configured to acquire a voice signal and process the voice signal, so as to output a digital signal to the smart television.
Specifically, the speech signal processing unit 100 includes: a clock signal subunit and a plurality of microphone subunits; each of the microphone subunits is connected to the power supply unit 200, and each of the microphone subunits is connected to the clock signal subunit.
As shown in fig. 7, in an implementation manner of the present embodiment, the microphone subunit includes: the microphone comprises a first microphone chip (shown as UV2), a third capacitor (shown as CV04), a third resistor (shown as RV01), a fourth resistor (shown as RV02), a fifth resistor (shown as RV03) and a fourth capacitor (shown as CV 06).
One end of the third capacitor is connected with electricity (namely connected with the microphone power supply chip), and the other end of the third capacitor is grounded; one end of the third resistor is connected with the power supply, and the other end of the third resistor is connected with a No. 2 pin of the first microphone chip; one end of the fourth resistor is connected to the 1 st pin of the first microphone chip, and the other end of the fourth resistor is connected to the DMIC _ DATA2 signal end of the power supply unit 200; one end of the fifth resistor is connected to the 4 th pin of the first microphone chip, and the other end of the fifth resistor is connected to the DMIC _ CLK signal end of the power supply unit 200; one end of the fourth capacitor is connected with the signal end of the DMIC _ DATA2 of the power supply unit 200, and the other end of the fourth capacitor is grounded; and the 3 rd pin of the first microphone chip is grounded, and the 5 th pin of the first microphone chip is connected with the power.
As shown in fig. 8, in another implementation manner of this embodiment, the microphone subunit includes: a second microphone chip (shown as UV1), a fifth capacitor (shown as CV07), a sixth resistor (shown as RV06), a seventh resistor (shown as RV7), an eighth resistor (shown as RV8), and a sixth capacitor (shown as CV 10).
One end of the fifth capacitor is connected with electricity (namely connected with the microphone power supply chip), and the other end of the fifth capacitor is grounded; one end of the sixth resistor is connected with the No. 2 pin of the second microphone chip, and the other end of the sixth resistor is grounded; one end of the seventh resistor is connected to the 1 st pin of the second microphone chip, and the other end of the seventh resistor is connected to the DMIC _ DATA2 signal end of the power supply unit 200; one end of the eighth resistor is connected to the 4 th pin of the second microphone chip, and the other end of the eighth resistor is connected to the DMIC _ CLK signal end of the power supply unit 200; one end of the sixth capacitor is connected to the signal end of DMIC _ DATA2 of the power supply unit 200, and the other end is grounded; and the 3 rd pin of the second microphone chip is grounded, and the 5 th pin of the second microphone chip is connected with the power.
Specifically, as shown in fig. 9, in the present embodiment, the clock signal subunit includes: a clock signal chip (shown as UV7), a seventh capacitor (shown as CV32), an eighth capacitor (shown as CV33), a ninth capacitor (shown as CV34), and a ninth resistor (shown as RV 19).
One end of the seventh capacitor is connected to the DMIC _ CLK signal end of the power supply unit 200, and the other end is grounded; one end of the eighth capacitor is connected with the 5 th pin of the clock signal chip, and the other end of the eighth capacitor is grounded; one end of the ninth capacitor is connected to the DMIC _ CLK signal end of the power supply unit 200, and the other end is grounded; one end of the ninth resistor is connected to the 4 th pin of the clock signal chip, and the other end of the ninth resistor is connected to the DMIC _ CLK signal end of the power supply unit 200; the 2 nd pins of the clock signal chips are all connected with the DMIC _ CLK signal end of the power supply unit 200, and the 3 rd pin is grounded.
Preferably, in this embodiment, each of the microphone subunits is a digital microphone subunit, and can convert a received sound signal into a digital signal; in addition, an RC circuit is reserved in each microphone subunit; in the case of adding a module to the main chip of the smart television, the radiation problem of the far-field speech module can be effectively improved by adjusting parameters of RV02 (shown in fig. 7) or CV06 (shown in fig. 8) in the microphone subunit.
Because the connecting wire 400 is arranged between the far-field voice module and the intelligent television; in this embodiment, by introducing UV7 (as shown in fig. 9), the clock signal DMIC _ CLK sent by the main chip of the smart television is shaped, so that the integrity of the clock signal can be ensured, and the radiation generated by the clock signal can be effectively improved.
In this embodiment, when the smart television detects that the far-field speech module is connected, since the RV20 of the far-field speech module is pulled up to 3V3, the DMIC _ DET of the USB interface of the smart television detects a high level, and determines that the far-field speech mode is a far-field speech mode; at the moment, a far-field voice function and a man-machine interaction interface are opened; meanwhile, the smart television sets the PIN5 and the PIN6 of the USB interface as far-field voice data input ports, and sets the PIN8 as a far-field voice clock signal output port.
When the smart television does not detect the connection of the far-field voice module, because the RN102 of the USB interface of the smart television is grounded, the DMIC _ DET is defaulted to be a low level, and the mode is determined to be a normal mode; at the moment, the smart television closes a far-field voice function and a man-machine interaction interface, and meanwhile, the smart television sets PIN5, PIN6 and PIN8 of a USB interface as input ports, turns off PIN8 and prevents clock signals from being output; avoiding radiation problems and ensuring normal use of the USB function.
Example four
The embodiment provides a far-field voice module, which is connected with an intelligent television through a connecting wire.
The difference between this embodiment and the third embodiment is that the far-field speech module and the connection line are independently arranged.
In this embodiment, the connection line is mainly used for transmitting a digital signal, a control signal and a voltage signal between the smart television and the far-field voice module, so as to realize far-field signal transmission; meanwhile, the connecting line in the embodiment can also be compatible with a USB function, namely, when the connecting line is connected with a non-far-field voice module, the connecting line can be used as a common USB data line.
Specifically, a USB interface is arranged at one end of the connecting line, and the USB interface of the connecting line is connected with the USB interface of the smart television in a matching manner; and the other end of the connecting wire is provided with a socket (for example, TYP-C or mini-USB), and the socket of the connecting wire is matched and connected with a power supply unit in the far-field voice module.
In this embodiment, in order to facilitate the connection between the far-field speech module and the connection line, a connection socket is provided in the power supply unit of the far-field speech module, and the connection socket is a socket that can be inserted into the connection line socket, and specifically, the circuit structure of the connection socket is as shown in fig. 6.
It should be noted that, in this embodiment, the end points of the connection socket are matched with the end points of the connection line socket.
EXAMPLE five
The embodiment provides a connecting wire, wherein one end of the connecting wire is connected with a far-field voice module, and the other end of the connecting wire is connected with an intelligent television; one end of the connecting wire connected with the far-field voice module is matched with a power supply unit of the far-field voice module; one end of the connecting line connected with the intelligent television is matched with a USB interface of a power supply unit of the intelligent television; specifically, the structure of the connecting line is as described in embodiment four.
In summary, the far-field voice module converts the received voice signal into a digital signal, and outputs the digital signal to the smart television main chip, and the smart television main chip directly processes the digital signal, so that the circuit structure is simplified, and the cost of the far-field voice module is reduced; according to the invention, the main chip of the smart television, the far-field voice module and the connecting line are improved, so that the far-field voice module and the USB interface are flexibly switched, and the problem of universality of a far-field voice structure is solved.
Of course, it will be understood by those skilled in the art that all or part of the processes of the methods of the above embodiments may be implemented by a computer program instructing relevant hardware (such as a processor, a controller, etc.), and the program may be stored in a computer readable storage medium, and when executed, the program may include the processes of the above method embodiments. The storage medium may be a memory, a magnetic disk, an optical disk, etc.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
Claims (10)
1. A far-field voice control method is applied to an intelligent television and is characterized by comprising the following steps:
detecting the connection state of a far-field voice module;
and when the far-field voice module is detected to be connected, the far-field voice mode is started, and the USB interface is controlled to supply power to the far-field voice module.
2. The far-field speech control method according to claim 1, wherein the detecting the connection status of the far-field speech module specifically comprises the following steps:
judging whether the level of a signal detection end in the USB interface is high level;
and when the far-field speech module is in a high level, judging that the far-field speech module is connected.
3. The far-field speech control method according to claim 1, wherein when the far-field speech module is detected to be connected, a far-field speech mode is turned on, and a USB interface is controlled to supply power to the far-field speech module, specifically comprising the following steps:
when the far-field voice module is detected to be connected, the far-field voice mode and a human-computer interaction interface are started;
setting a clock signal end in the USB interface as output so as to output a clock signal to the far-field voice module;
and setting a data signal end in the USB interface as an input so as to receive the digital signal sent by the far-field voice module.
4. The far-field speech control method according to claim 1, further comprising the steps of:
and entering a normal mode when the far-field voice module connection is not detected.
5. An intelligent television, comprising: the USB interface is connected with the main chip;
the main chip is used for detecting the connection state of the far-field voice module; the far-field voice module is used for starting a far-field voice mode and controlling a USB interface to supply power to the far-field voice module when the connection of the far-field voice module is detected;
the USB interface is used for supplying power to the far-field voice module; and the far-field voice module is used for receiving the digital signal sent by the far-field voice module.
6. The smart television of claim 5, wherein the USB interface comprises: a signal detection terminal and a power supply terminal;
the signal detection end is used for detecting the connection state of the far-field voice module;
the power supply end is used for supplying power to the far-field voice module.
7. A far-field voice module is connected with an intelligent television and comprises a voice signal processing unit and a power supply unit, wherein the power supply unit is connected with the far-field voice module; the power supply unit is connected with a USB interface of the intelligent television in a matching manner, and the power supply unit is connected with the voice signal processing unit;
the power supply unit includes: a signal detection terminal and a power supply terminal; the signal detection end and the power supply end are respectively connected with a USB interface of the intelligent television in a matching mode.
8. The far-field speech module of claim 7, wherein the power supply unit further comprises: the microphone power supply device comprises a microphone power supply chip, a first capacitor and a second capacitor; the input end of the microphone power supply chip is connected with the power supply end, and the output end of the microphone power supply chip is connected with the voice signal processing unit; one end of the first capacitor is grounded, and the other end of the first capacitor is connected with the input end of the microphone power supply chip; one end of the second capacitor is grounded, and the other end of the second capacitor is connected with the output end of the microphone power supply chip.
9. The far-field speech module of claim 7, further comprising: the connecting line is used for transmitting signals and supplying power to the far-field voice module; one end of the connecting wire is connected with the USB interface of the intelligent television in a matching mode, and the other end of the connecting wire is connected with the power supply unit.
10. A connecting wire is characterized in that one end of the connecting wire is connected with a far-field voice module, and the other end of the connecting wire is connected with an intelligent television; one end of the connecting wire connected with the far-field voice module is matched with a power supply unit of the far-field voice module; and one end of the connecting wire connected with the intelligent television is matched with a USB interface of a power supply unit of the intelligent television.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911411018.XA CN113132793A (en) | 2019-12-31 | 2019-12-31 | Far-field voice control method, smart television, far-field voice module and connecting line |
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| CN201911411018.XA CN113132793A (en) | 2019-12-31 | 2019-12-31 | Far-field voice control method, smart television, far-field voice module and connecting line |
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Application publication date: 20210716 |