TV Voice Wake-up Circuit Segmentation for Low Power Standby
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional far-field voice technology in televisions fails to achieve a true standby wake-up function while maintaining low power consumption, leading to increased power usage and not meeting energy conservation and environmental protection requirements.
Innovation Solution
A circuit integrated with a voice wake-up function, comprising a television mainboard and a far-field voice module with a microphone unit, analog-to-digital conversion unit, main control unit, and voice wake-up unit, utilizing a voice recognition chip, PMOS transistor switch circuit, and encryption unit to process and output wake-up signals, reducing power consumption by enabling local voice standby wake-up.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional far-field voice technology is used to enable voice interaction, then voice control function is improved, but power consumption increases and true standby wake-up cannot be achieved
Solution Approach 1:
The voice processing function is segmented into two independent paths: a low-power voice wake-up unit that operates independently during standby to detect wake-up commands, and a full voice processing unit that operates only when needed. This segmentation allows the television to achieve voice control functionality while maintaining low power consumption during standby by keeping the main processing unit dormant.
2Reliability
If false standby wake-up technology is used, then voice interaction is maintained, but power consumption greatly increases and energy conservation requirements are not met
Solution Approach 1:
The wake-up function is extracted from the main television system and implemented as a separate, dedicated voice wake-up unit with its own independent processing path. This extracted unit consumes minimal power and operates independently during standby, while the main television system remains in true standby with greatly reduced power consumption. The extraction principle allows voice interaction reliability to be maintained without the energy loss of keeping the entire system active.
3Speed
If the television mainboard remains in loaded state for wake-up function, then wake-up responsiveness is improved, but power consumption increases
Solution Approach 1:
The voice wake-up unit performs preliminary voice detection and recognition during standby state before activating the main television system. This preliminary action allows the system to remain in low-power standby mode while still being able to quickly respond to wake-up commands, as the dedicated wake-up unit is already prepared and waiting for input without requiring the entire mainboard to be in a loaded state.
Data Source
AI summary
Circuit integrated with voice wake-up function, television and voice control method. The circuit integrated with voice wake-up function comprises television mainboard and far-field voice module. The far-field voice module comprises: microphone unit for collecting voice simulation signal; analog-digital conversion unit for converting voice simulation signal to digital signal; main control unit for processing converted digital signal and outputting same to television mainboard; and voice wake-up unit for processing voice simulation signal and outputting wake-up signal to television mainboard. Microphone unit is connected to analog-digital conversion unit and voice recognition unit, respectively; analog-digital conversion unit is connected to main control unit and television mainboard, respectively; and television mainboard is connected to main control unit and voice wake-up unit, respectively.