Ultrasonic Authentication Device Using Frequency Modulation
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Solution Overview
Problem
New types of albums without traditional interfaces, such as AUX terminals, face challenges in transmitting authentication information to user terminal devices, as existing methods like wireless communication require additional modules and incur pairing delays, necessitating a non-contact authentication method.
Innovation Solution
An authentication information transmission device using ultrasonic waves, comprising a storage unit for authentication information, a control unit generating sound wave signals corresponding to the information, and a sound wave output unit, which repeatedly generates sound waves of specific frequencies to minimize errors at the receiving end.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless communication modules (Wi-Fi, Bluetooth) are used to transmit authentication information, then authentication information can be transmitted wirelessly, but the device complexity increases and pairing time is required which reduces productivity
Solution Approach 1:
The patent replaces electronic wireless communication modules with an acoustic wave-based transmission system. The authentication information is converted into acoustic signals that can be transmitted through air or other media, eliminating the need for complex wireless communication hardware while achieving wireless transmission functionality.
Solution Approach 2:
The patent modulates acoustic wave parameters (frequency, amplitude, timing) to encode authentication information. By varying these physical parameters of the acoustic waves, the system transmits data without requiring traditional wireless communication protocols or pairing mechanisms.
2Productivity
If authentication information is transmitted using audible frequency sound waves, then transmission can occur, but error occurrence at the receiving side increases
Solution Approach 1:
The patent employs periodic repetition of acoustic signal transmission at ultrasonic frequencies. By transmitting the same authentication information multiple times in periodic cycles, the receiving device can aggregate signals and filter out noise, significantly reducing error rates while maintaining transmission speed.
Solution Approach 2:
The patent introduces ultrasonic waves as an intermediary carrier for authentication information. These high-frequency acoustic waves serve as a stable medium that can be modulated and demodulated with high precision, reducing transmission errors compared to audible frequency waves that are more susceptible to environmental interference.
3Device complexity
If traditional interfaces (AUX terminal) are removed from terminal devices, then device simplicity is improved, but the ability to receive authentication information from storage media is lost
Solution Approach 1:
The patent enables terminal devices to receive authentication information through multiple modalities - primarily through acoustic wave reception using existing microphones, but also potentially through other sensors. This multi-functional approach allows the device to maintain authentication capability without requiring dedicated physical interfaces like AUX terminals.
Solution Approach 2:
The patent replaces mechanical connection interfaces (AUX terminals, physical connectors) with acoustic wave-based transmission. The authentication information is transmitted through air as sound waves, allowing the receiving device to capture the signal through its existing acoustic sensors without requiring any special physical interface.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach allows for accurate and error-minimized transmission of authentication information using ultrasonic waves, reducing manufacturing costs by avoiding the need for analog-to-digital converters and enabling non-contact data transfer.
Implementation Method 1
an authentication information transmission device using ultrasonic waves includes a storage unit configured to store authentication information and frequency information corresponding to letters or numbers included in the authentication information
Implementation Method 2
a control unit configured to generate sound wave signals with frequencies corresponding to the letters or numbers included in the authentication information
Data Source
AI summary
A device for transmitting authentication information is disclosed. A device for transmitting authentication information, according to one embodiment of the present invention, comprises: a storage unit for storing authentication information and frequency information corresponding to letters or numbers included in the authentication information; a control unit for generating sound wave signals having a frequency corresponding to the letters or numbers included in the authentication information; and a sound wave output unit for outputting the sound wave signal, wherein the control unit sequentially generates, in the order in which the letters or numbers are enumerated, sound wave signals having a frequency corresponding to the letters or numbers included in the authentication information, and repeatedly generates, a preset number of times, a sound wave signal having a frequency corresponding to each letter or number.