CN112929722B - External equipment for voice control of set top box - Google Patents
External equipment for voice control of set top box Download PDFInfo
- Publication number
- CN112929722B CN112929722B CN202110350121.9A CN202110350121A CN112929722B CN 112929722 B CN112929722 B CN 112929722B CN 202110350121 A CN202110350121 A CN 202110350121A CN 112929722 B CN112929722 B CN 112929722B
- Authority
- CN
- China
- Prior art keywords
- top box
- set top
- pin
- main control
- control module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000003990 capacitor Substances 0.000 claims description 30
- 230000005236 sound signal Effects 0.000 claims description 28
- 230000005540 biological transmission Effects 0.000 claims description 12
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- HEZMWWAKWCSUCB-PHDIDXHHSA-N (3R,4R)-3,4-dihydroxycyclohexa-1,5-diene-1-carboxylic acid Chemical compound O[C@@H]1C=CC(C(O)=O)=C[C@H]1O HEZMWWAKWCSUCB-PHDIDXHHSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
Classifications
-
- 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
- H04N21/4104—Peripherals receiving signals from specially adapted client devices
-
- 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
-
- 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
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0208—Noise filtering
-
- 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
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0208—Noise filtering
- G10L21/0216—Noise filtering characterised by the method used for estimating noise
-
- 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
-
- 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]
- H04N21/42204—User interfaces specially adapted for controlling a client device through a remote control device; Remote control devices therefor
-
- 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
-
- 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
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0208—Noise filtering
- G10L2021/02082—Noise filtering the noise being echo, reverberation of the speech
-
- 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
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0208—Noise filtering
- G10L21/0216—Noise filtering characterised by the method used for estimating noise
- G10L2021/02161—Number of inputs available containing the signal or the noise to be suppressed
- G10L2021/02166—Microphone arrays; Beamforming
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Human Computer Interaction (AREA)
- Computational Linguistics (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Quality & Reliability (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
The invention discloses external equipment for voice control of a set top box. There is a great deal of current demand for upgrading common set-top boxes to intelligent set-top boxes. The set top box is provided with a USB interface and an audio output port, and the external equipment comprises a main control module, a power management module, a microphone array connected to the main control module, an echo cancellation module and a USB terminal. The main control module completes the functions of data processing, voice recognition and the like. The microphone array is formed by a plurality of microphones and is used for picking up environmental sounds; the USB terminal is inserted into a USB interface of the set top box, is communicated with the set top box, and obtains a power supply from the set top box. And the audio connector in the echo cancellation module is connected with an audio output port of the set top box and is used for extracting audio played by the set top box. The invention can upgrade the traditional set top box equipment into the voice set top box, realize voice wake-up and voice recognition, and further realize the functions of voice control of the set top box on/off, volume adjustment, channel adjustment and the like.
Description
Technical Field
The invention belongs to the technical field of automatic control, and particularly relates to external equipment for voice control of a set top box.
Background
In recent years, the voice processing technology is more and more mature, and the voice-controlled intelligent home equipment is more and more applied to the aspects of people's life. With the set top box as an access point, a large number of traditional set top boxes in the market need to be upgraded into intelligent set top boxes at present, and how to economically and conveniently realize intelligent upgrading becomes a research direction of a plurality of equipment manufacturers at present. The invention provides USB voice control front-end equipment, which is different from the direct replacement of the whole set of set top box equipment, and the traditional set top box equipment is economically and conveniently upgraded into an intelligent voice control set top box by using USB and audio interfaces of the set top box.
Disclosure of Invention
The invention aims to provide external equipment for voice control of a set top box, which is used for intelligent upgrade of a traditional set top box.
The set top box is provided with a USB interface and an audio output port, and the external equipment comprises a main control module, a power management module, a microphone array connected to the main control module, an echo cancellation module and a USB terminal;
the USB terminal is provided with a power end, a grounding end, a data transmission positive end and a data transmission negative end;
The positive end of the power input of the power management module is connected with the power end of the USB terminal, and after the USB terminal is inserted into the USB interface, the power management module acquires +5V power by the set top box; the power input negative end of the power management module is grounded, and the power input positive end and the power input negative end are coupled through a capacitor; the power management module outputs a +3.3V power supply and a +2.5V power supply;
the power supply pin of the main control module is connected with the +3.3V power supply output pin of the power supply management module, and the grounding pin GND is connected with the grounding end of the USB terminal; the USB positive data pin of the main control module is connected with the data transmission positive end of the USB terminal, and the USB negative data pin is connected with the data transmission negative end of the USB terminal;
The microphone array comprises a plurality of microphones, and each microphone is connected with the main control module in the same mode; the power supply pin of the microphone is connected with the +2.5V power supply output pin of the power supply management module and is grounded through a decoupling capacitor, the positive signal output pin and the negative signal output pin are respectively connected with the positive signal receiving pin and the negative signal receiving pin of the main control module through coupling capacitors, and the positive signal output pin and the negative signal output pin of the microphone are coupled through the capacitors; the negative signal output pin of the microphone is connected with the grounding pin and then grounded;
The echo cancellation module comprises an audio connector, four resistors and two capacitors; the audio connector is provided with two grounding ends, two right channel audio signal pins and two left channel audio signal pins which are correspondingly arranged; wherein, two right channel audio signal feet connect one end of the first resistor, two left channel audio signal feet connect one end of the second resistor; one end of the first capacitor and one end of the third resistor are connected in parallel and grounded, and the other end of the first capacitor and the other end of the third resistor are connected in parallel and then serve as a right channel audio signal output end which is connected with an audio signal positive end input pin of the main control module; one end of the second capacitor and one end of the fourth resistor are connected in parallel and grounded, and the other end of the second capacitor and the other end of the second resistor are connected in parallel and then serve as a left channel audio signal output end which is connected with the other audio signal positive end input pin of the main control module; the input pins of the negative terminals of the two audio signals of the main control module are grounded through capacitors respectively.
In the specific implementation, USB protocol data is preset in the set top box equipment, an instruction is waited to be received, a voice AI chip is used in the external equipment, instruction information is processed, and a processing result is transmitted through a USB data line. The communication mode between the external device and the set top box is a USB mode, and the existing mature USB communication protocol is used. The invention provides external hardware equipment for intelligent upgrade of a set top box, and aims to provide the external hardware equipment for intelligent upgrade of the set top box.
The invention provides an external device of a set top box, which is an additional device of the set top box, is a voice input port, can use USB and audio interfaces of the existing set top box, upgrade the traditional set top box device into a voice set top box, realize voice wakeup and voice recognition, and further realize the functions of controlling the set top box to be started or stopped, adjusting volume, adjusting channels and the like.
Drawings
FIG. 1 is an overall schematic of the present invention;
FIG. 2 is a schematic diagram of a power management module according to the present invention;
FIG. 3 is a schematic diagram of a master control module according to the present invention;
FIG. 4 is a schematic diagram of one microphone of the microphone array of the present invention;
fig. 5 is a schematic diagram of an echo cancellation module according to the present invention.
Detailed Description
The invention will be described in further detail with reference to the specific drawings.
The external device for voice control of the set top box is characterized in that the set top box is provided with a USB interface and an audio output port, the USB interface adopts a general type_A interface, and the interface is FEMALE ports.
As shown in fig. 1, the external device includes a main control module U1, a power management module U2, a microphone array 1 connected to the main control module, an echo cancellation module 2, and a USB terminal 3.
The USB terminal adopts a general type_A interface, and the interface is a MALE interface and is provided with a power supply end, a grounding end, a data transmission positive end DP and a data transmission negative end DM.
As shown in fig. 2, the positive power input end of the power management module U2 is connected to the power end of the USB terminal, and after the USB terminal is plugged into the USB interface, the power management module U2 obtains +5v power from the set top box. The negative end of the power input of the power management module U2 is grounded, and the positive end of the power input and the negative end of the power input are coupled through a capacitor. The power management module U2 adopts a DCDC module to respectively output +3.3V power supply and +2.5V power supply, and is a mature product.
As shown in fig. 3, the main control module U1 adopts a GX8008C voice chip, which is a signal processing and controlling unit of the device, and performs functions such as data processing and voice recognition. The power pin VDD of the main control module U1 is connected with the +3.3V power output pin of the power management module U2, and the ground pin GND of the main control module U1 is connected with the ground end of the USB terminal. The USB positive DATA pin DATA+ of the main control module U1 is connected with the DATA transmission positive end DP of the USB terminal, and the USB negative DATA pin DATA-of the main control module U1 is connected with the DATA transmission negative end DM of the USB terminal.
The microphone array comprises a plurality of microphones, each microphone is connected with the main control module U1, the connection modes are the same, and the embodiment provides a mode that two microphones form an array. As shown in fig. 4, the power pin vdd_mic of the microphone (shown by the dashed box) is connected to the +2.5v power output pin of the power management module U2, and is grounded through a decoupling capacitor. The positive signal output pin AIN_P and the negative signal output pin AIN_N of the microphone are respectively connected with the positive signal receiving pin ADC_P and the negative signal receiving pin ADC_N of the main control module U1 through coupling capacitors, and the positive signal output pin and the negative signal output pin of the microphone are coupled through the capacitors. The negative signal output pin of the microphone is connected with the grounding pin and then grounded.
The echo cancellation module performs partial pressure, filtering and other treatments on the audio signal and is connected with the main control module. Realizing the function of audio extraction. As shown in fig. 5, the echo cancellation module includes an audio connector J and four resistors, two capacitors. The audio connector J adopts a 3.5mm standard three-section audio connector, is a FAMALE interface and is connected with an audio output port of the set top box. The audio connector J is provided with two grounding ends, two right channel audio signal pins and two left channel audio signal pins which are correspondingly arranged. The two right-channel audio signal pins are connected with one end of the first resistor R1, and the two left-channel audio signal pins are connected with one end of the second resistor R2. One end of the first capacitor C1 and one end of the third resistor R3 which are connected in parallel are grounded, the other end of the first capacitor C1 and the other end of the third resistor R1 which are connected in parallel are used as a right channel audio signal output end REF_RP, and one audio signal positive end input pin ADC1_P of the main control module U1 is connected. One end of the second capacitor C2 and one end of the fourth resistor R4 which are connected in parallel are grounded, the other end of the second capacitor C2 and the other end of the fourth resistor R2 which are connected in parallel are used as a left channel audio signal output end REF_LP, and the other audio signal positive end input pin ADC2_P of the main control module U1 is connected. The two audio signal negative terminal input pins ADC1_N and ADC2_N of the main control module U1 are respectively grounded through a capacitor.
Specific application scenarios are exemplified as follows:
the method comprises the steps of (1) connecting an audio output interface of a set top box with a 3.5mm standard three-section audio interface in equipment by using an audio line;
step (2), connecting the USB MALE interface of the device with USB FAMALE interfaces of the set top box;
step (3) the user sends out a wake-up word, such as 'baby' and 'small treasures';
step (4), the microphone array receives a voice signal, and the audio input interface also receives the audio being played by the set top box; and transmitting the data to a main control module;
Step (5), the main control module processes and computes the received audio data and then identifies the wake-up word;
step (6) the user sends instruction information such as 'increase volume'; the device performs the action of step (4) again;
Step (7), the main control module processes and computes the received audio data, recognizes the instruction word and transmits the instruction word to the set top box through the USB interface;
and (8) the set top box receives the information and executes the action of increasing the volume.
The foregoing has outlined rather broadly the features and advantages of the present invention in order that the detailed description of the invention that follows may be better understood. The protection of the present invention is not limited to the above examples. Variations and advantages that would occur to one skilled in the art are included in the invention without departing from the spirit and scope of the inventive concept, and the scope of the invention is defined by the appended claims.
Claims (4)
1. The external equipment for voice control of the set top box is characterized in that the set top box is provided with a USB interface and an audio output port:
the external equipment comprises a main control module, a power management module, a microphone array connected to the main control module, an echo cancellation module and a USB terminal;
the USB terminal is provided with a power end, a grounding end, a data transmission positive end and a data transmission negative end;
The positive end of the power input of the power management module is connected with the power end of the USB terminal, and after the USB terminal is inserted into the USB interface, the power management module acquires +5V power by the set top box; the power input negative end of the power management module is grounded, and the power input positive end and the power input negative end are coupled through a capacitor; the power management module outputs a +3.3V power supply and a +2.5V power supply;
the power supply pin of the main control module is connected with the +3.3V power supply output pin of the power supply management module, and the grounding pin GND is connected with the grounding end of the USB terminal; the USB positive data pin of the main control module is connected with the data transmission positive end of the USB terminal, and the USB negative data pin is connected with the data transmission negative end of the USB terminal;
The microphone array comprises a plurality of microphones, and each microphone is connected with the main control module in the same mode; the power supply pin of the microphone is connected with the +2.5V power supply output pin of the power supply management module and is grounded through a decoupling capacitor, the positive signal output pin and the negative signal output pin are respectively connected with the positive signal receiving pin and the negative signal receiving pin of the main control module through coupling capacitors, and the positive signal output pin and the negative signal output pin of the microphone are coupled through the capacitors; the negative signal output pin of the microphone is connected with the grounding pin and then grounded;
The echo cancellation module comprises an audio connector, four resistors and two capacitors; the audio connector is provided with two grounding ends, two right channel audio signal pins and two left channel audio signal pins which are correspondingly arranged; wherein, two right channel audio signal feet connect one end of the first resistor, two left channel audio signal feet connect one end of the second resistor; one end of the first capacitor and one end of the third resistor are connected in parallel and grounded, and the other end of the first capacitor and the other end of the third resistor are connected in parallel and then serve as a right channel audio signal output end which is connected with an audio signal positive end input pin of the main control module; one end of the second capacitor and one end of the fourth resistor are connected in parallel and grounded, and the other end of the second capacitor and the other end of the second resistor are connected in parallel and then serve as a left channel audio signal output end which is connected with the other audio signal positive end input pin of the main control module; the input pins of the negative terminals of the two audio signals of the main control module are grounded through capacitors respectively.
2. The external device for voice control of a set top box of claim 1, wherein: the USB interface and the USB terminal adopt a general type_A interface, the USB interface is FEMALE ports, and the USB terminal is a MALE port.
3. The external device for voice control of a set top box of claim 1, wherein: the main control module adopts a GX8008C voice chip, which is a signal processing and controlling unit of the equipment, and completes data processing and voice recognition.
4. The external device for voice control of a set top box of claim 1, wherein: the audio connector adopts a 3.5mm standard three-section audio connector, is a FAMALE interface and is connected with an audio output port of the set top box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110350121.9A CN112929722B (en) | 2021-03-31 | 2021-03-31 | External equipment for voice control of set top box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110350121.9A CN112929722B (en) | 2021-03-31 | 2021-03-31 | External equipment for voice control of set top box |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112929722A CN112929722A (en) | 2021-06-08 |
| CN112929722B true CN112929722B (en) | 2024-05-28 |
Family
ID=76173514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110350121.9A Active CN112929722B (en) | 2021-03-31 | 2021-03-31 | External equipment for voice control of set top box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112929722B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113346916B (en) * | 2021-06-29 | 2024-05-31 | 杭州国芯科技股份有限公司 | Vehicle-mounted frequency modulation transmitting equipment |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120139289A (en) * | 2011-06-17 | 2012-12-27 | 주식회사 디엠티 | Set-top box with echo cancelling for vedio call |
| CN205232396U (en) * | 2015-12-14 | 2016-05-11 | 四川长虹网络科技有限责任公司 | STB that can charge for peripheral hardware |
| CN207010880U (en) * | 2017-08-02 | 2018-02-13 | 深圳市海美迪科技股份有限公司 | Set top box |
| CN108737865A (en) * | 2018-08-17 | 2018-11-02 | 浙江核聚智能技术有限公司 | A kind of intelligence audio-video equipment |
| CN110310653A (en) * | 2019-07-09 | 2019-10-08 | 杭州国芯科技股份有限公司 | A kind of echo cancel method |
| CN209962694U (en) * | 2019-03-07 | 2020-01-17 | Tcl通力电子（惠州）有限公司 | Echo cancellation circuit and electroacoustic equipment |
| US10657981B1 (en) * | 2018-01-19 | 2020-05-19 | Amazon Technologies, Inc. | Acoustic echo cancellation with loudspeaker canceling beamformer |
| CN111385716A (en) * | 2020-04-16 | 2020-07-07 | 音王电声股份有限公司 | Self-adaptive pickup all-in-one machine control system |
| CN211959419U (en) * | 2019-12-23 | 2020-11-17 | 广州市运生信息科技有限公司 | USB audio processor for network set top box |
| WO2021004067A1 (en) * | 2019-07-10 | 2021-01-14 | 海信视像科技股份有限公司 | Display device |
| CN214338053U (en) * | 2021-03-31 | 2021-10-01 | 杭州国芯科技股份有限公司 | External device for voice control of set top box |
-
2021
- 2021-03-31 CN CN202110350121.9A patent/CN112929722B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120139289A (en) * | 2011-06-17 | 2012-12-27 | 주식회사 디엠티 | Set-top box with echo cancelling for vedio call |
| CN205232396U (en) * | 2015-12-14 | 2016-05-11 | 四川长虹网络科技有限责任公司 | STB that can charge for peripheral hardware |
| CN207010880U (en) * | 2017-08-02 | 2018-02-13 | 深圳市海美迪科技股份有限公司 | Set top box |
| US10657981B1 (en) * | 2018-01-19 | 2020-05-19 | Amazon Technologies, Inc. | Acoustic echo cancellation with loudspeaker canceling beamformer |
| CN108737865A (en) * | 2018-08-17 | 2018-11-02 | 浙江核聚智能技术有限公司 | A kind of intelligence audio-video equipment |
| CN209962694U (en) * | 2019-03-07 | 2020-01-17 | Tcl通力电子（惠州）有限公司 | Echo cancellation circuit and electroacoustic equipment |
| CN110310653A (en) * | 2019-07-09 | 2019-10-08 | 杭州国芯科技股份有限公司 | A kind of echo cancel method |
| WO2021004067A1 (en) * | 2019-07-10 | 2021-01-14 | 海信视像科技股份有限公司 | Display device |
| CN211959419U (en) * | 2019-12-23 | 2020-11-17 | 广州市运生信息科技有限公司 | USB audio processor for network set top box |
| CN111385716A (en) * | 2020-04-16 | 2020-07-07 | 音王电声股份有限公司 | Self-adaptive pickup all-in-one machine control system |
| CN214338053U (en) * | 2021-03-31 | 2021-10-01 | 杭州国芯科技股份有限公司 | External device for voice control of set top box |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112929722A (en) | 2021-06-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1908327B1 (en) | Electronic interfacing with a head-mounted device | |
| CN203167074U (en) | Mobile terminal configured with reuse interface | |
| CN102201827B (en) | Audio signal receiving and switching device and audio signal transmission system | |
| EP2654168B1 (en) | Electrical power transmitting controller device and electrical power receiving controller device for using in a communication system | |
| CN102354883B (en) | Audio signal transfer device | |
| CN103888873B (en) | Electronic installation, UART output systems and method | |
| CN112929722B (en) | External equipment for voice control of set top box | |
| CN102073470B (en) | Electronic equipment and control method thereof | |
| CN110300318A (en) | A kind of USB terminal interface circuit and USB terminal interface circuit control method | |
| CN214338053U (en) | External device for voice control of set top box | |
| CN2602456Y (en) | Diad socket circuit for beat and sound corrector | |
| CN207516993U (en) | A kind of Interface Expanding circuit and device | |
| CN107665177B (en) | USB switching device based on USB Type-C framework | |
| CN106658328A (en) | Earphone testing circuit | |
| CN109286424B (en) | Bluetooth adapter capable of switching input modes and implementation method | |
| CN102065160A (en) | Circuit for being externally connected with loudspeaker by utilizing mobile phone | |
| CN203590328U (en) | Signal acquisition device | |
| CN114281745A (en) | Docking station capable of switching connection of multiple uplink hosts | |
| CN202050447U (en) | Circuit capable of connecting mobile phone with external loudspeaker | |
| CN112770158A (en) | Far-field voice control system and method | |
| CN110366017A (en) | A kind of smart television voice cam device and intelligent TV set | |
| CN213026812U (en) | Audio equipment with multifunctional connector | |
| CN212874044U (en) | Bluetooth control system based on directional audio glasses | |
| CN218734880U (en) | Earphone switching circuit compatible with single-ended and balanced output | |
| CN210639604U (en) | Bluetooth voice module with serial port control |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 310012 5-6 / F, block a, East Software Park Innovation Building, 90 Wensan Road, Hangzhou City, Zhejiang Province Patentee after: Hangzhou Guoxin Microelectronics Co.,Ltd. Country or region after: China Address before: 310012 5-6 / F, block a, East Software Park Innovation Building, 90 Wensan Road, Hangzhou City, Zhejiang Province Patentee before: HANGZHOU NATIONALCHIP SCIENCE & TECHNOLOGY Co.,Ltd. Country or region before: China |