Integrated Audio Signal Processing Circuit for FM Transmission
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Solution Overview
Problem
Existing FM transmission circuits require separate microcomputers and setting devices for configuring carrier wave frequencies, leading to increased mounting area and complexity, especially when setting transmission power or frequencies.
Innovation Solution
An integrated audio signal processing circuit that includes a data generation circuit to produce clock and data signals from audio inputs, and an FM transmission circuit capable of setting frequency, modulation, and amplification based on control signals, eliminating the need for external microcomputers and display screens.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate microcomputers and setting devices are used for configuring carrier wave frequencies, then the FM transmission circuit can be properly controlled, but the mounting area becomes large
Solution Approach 1:
The patent merges the microcomputer, setting device, and FM transmission circuit into a single integrated circuit. The microcomputer unit (320), setting device unit (310), and FM transmission circuit unit (300) are combined into one chip, eliminating the need for separate components and significantly reducing the mounting area while maintaining all necessary control functions for carrier wave frequency configuration
Solution Approach 2:
The integrated circuit performs multiple functions within a single device: it includes the FM transmission circuit for signal modulation, the microcomputer for control and processing, and the setting device for user input. This multi-functional design allows the single integrated circuit to replace multiple separate components, achieving both area reduction and functional completeness
2Reliability
If separate microcomputers and setting devices are used for setting transmission power, then the FM transmission circuit can be properly configured, but the device complexity increases
Solution Approach 1:
The patent combines the transmission power setting functionality into the integrated circuit along with the FM transmission and control functions. The setting device unit (310) is integrated onto the same chip as the FM transmission circuit (300), reducing the number of separate components and simplifying the overall device structure while maintaining the ability to properly configure transmission power
Data Source
AI summary
An audio signal processing circuit comprising: a holding circuit configured to receive a clock signal and set data corresponding to the clock signal, and to hold the set data; a processing circuit configured to process at least one of a first audio signal and a second audio signal input in parallel, based on the set data of the holding circuit; and a set data output circuit configured to output the clock signal to the holding circuit based on the first audio signal corresponding to the clock signal, and output the set data to the holding circuit based on the second audio signal corresponding to the set data.