Circuit integrated with voice wake-up function, television and voice control method

1. A circuit integrated with a voice wake-up function, comprising a television mainboard and a far-field voice module, wherein the far-field voice module comprises:

a microphone unit configured for collecting an analog signal of a human voice;

an analog-to-digital conversion unit configured for converting the analog signal of the human voice into a digital signal;

a main control unit configured for processing the converted digital signal and outputting the converted digital signal to the television mainboard; and

a voice wake-up unit configured for processing the analog signal of the human voice and outputting a wake-up signal to the television mainboard;

wherein, the microphone unit is respectively connected with the analog-to-digital conversion unit and a voice recognition unit, the analog-to-digital conversion unit is respectively connected with the main control unit and the television mainboard, and the television mainboard is respectively connected with the main control unit and the voice wake-up unit, and

the voice wake-up unit comprises a voice recognition chip, a first linear voltage stabilizer and a PMOS transistor switch circuit, an IO interface of the voice recognition chip is connected with an IO interface of the television mainboard, a VCC end of the voice recognition chip is connected with an output end of the first linear voltage stabilizer, an input end of the first linear voltage stabilizer is connected with an output end of the PMOS transistor switch circuit, and an input end of the PMOS transistor switch circuit is connected with a 5V-STB end of the television mainboard.

2. The circuit integrated with the voice wake-up function according to claim 1 , wherein a preset voice wake-up command is stored in the voice recognition chip.

3. The circuit integrated with the voice wake-up function according to claim 1 , wherein the model of the voice recognition chip is ISD9160.

4. The circuit integrated with the voice wake-up function according to claim 1 , wherein the far-field voice module further comprises an encryption unit, the digital signal is an I2S signal, and the encryption unit is configured for encrypting a communication process between the main control unit and the analog-to-digital conversion unit according to an I2C protocol.

5. The circuit integrated with the voice wake-up function according to claim 1 , wherein the main control unit comprises an MCU chip, and an information transmission form of a USB protocol is adopted between the MCU chip and the television mainboard.

6. A television, comprising a circuit integrated with a voice wake-up function, the circuit integrated with the voice wake-up function comprising a television mainboard and a far-field voice module, wherein the far-field voice module comprises: a microphone unit configured for collecting an analog signal of a human voice, an analog-to-digital conversion unit configured for converting the analog signal of the human voice into a digital signal, a main control unit configured for processing the converted digital signal and outputting the converted digital signal to the television mainboard, and a voice wake-up unit configured for processing the analog signal of the human voice and outputting a wake-up signal to the television mainboard;

the microphone unit is respectively connected with the analog-to-digital conversion unit and a voice recognition unit, the analog-to-digital conversion unit is respectively connected with the main control unit and the television mainboard, and the television mainboard is respectively connected with the main control unit and the voice wake-up unit, and

wherein the voice wake-up unit comprises a voice recognition chip, a first linear voltage stabilizer and a PMOS transistor switch circuit, an TO interface of the voice recognition chip is connected with an TO interface of the television mainboard, a VCC end of the voice recognition chip is connected with an output end of the first linear voltage stabilizer, an input end of the first linear voltage stabilizer is connected with an output end of the PMOS transistor switch circuit, and an input end of the PMOS transistor switch circuit is connected with a 5V-STB end of the television mainboard.

7. A voice control method based on the television according to claim 6 , comprising the steps of:

collecting by a microphone unit an analog signal of a human voice in a preset range and sending the analog signal to an analog-to-digital conversion unit when the television is in a normal working state;

converting by the analog-digital conversion unit the analog signal of the human voice into a digital signal and outputting the digital signal to a television mainboard;

processing by the television mainboard the converted digital signal and executing a corresponding feedback operation;

collecting by the microphone unit the analog signal of the human voice in a preset range and sending the analog signal to a voice wake-up unit when the television is in a standby working state;

processing by the voice wake-up unit the analog signal of the human voice and outputting a wake-up signal to the television mainboard; and

switching the television from the standby working state to the normal working state after the television mainboard receives the wake-up signal.

8. The voice control method according to claim 7 , wherein the step of processing by the voice wake-up unit the analog signal of the human voice and outputting a wake-up signal to the television mainboard specifically comprises:

processing by the voice wake-up unit the collected analog signal of the human voice and comparing the processed signal with a preset voice wake-up command;

if the processed signal is consistent with the preset voice wake-up command, outputting the wake-up signal to the television mainboard; and

if the processed signal is inconsistent with the preset voice wake-up command, outputting no wake-up signal to the television mainboard.

9. The voice control method according to claim 8 , wherein the step of converting by the analog-digital conversion unit the analog signal of the human voice into a digital signal and outputting the digital signal to a television mainboard specifically comprises:

converting by the analog-digital conversion unit the analog signal of the human voice into the digital signal;

encrypting the converted digital signal by the encryption unit; and

sending by the analog-digital conversion unit the encrypted digital signal to the main control unit.

10. The television according to claim 6 , wherein a preset voice wake-up command is stored in the voice recognition chip.

11. The television according to claim 6 , wherein the model of the voice recognition chip is ISD9160.

12. The television according to claim 6 , wherein the far-field voice module further comprises an encryption unit, the digital signal is an I2S signal, and the encryption unit is configured for encrypting a communication process between the main control unit and the analog-to-digital conversion unit according to an I2C protocol.

13. The television according to claim 6 , wherein the main control unit comprises an MCU chip, and an information transmission form of a USB protocol is adopted between the MCU chip and the television mainboard.