Wistron has filed a patent for an air leak detection device, method, and system. The method involves inputting a scanning signal into a cavity, recording the response signal of the cavity, and analyzing it to determine if there is an air leak. GlobalData’s report on Wistron gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Wistron, Device power optimization was a key innovation area identified from patents. Wistron's grant share as of September 2023 was 76%. Grant share is based on the ratio of number of grants to total number of patents.
Air leak detection method for a cavity
A recently filed patent (Publication Number: US20230314263A1) describes an air leak detection method and device for a cavity. The method involves inputting a scanning signal into the cavity, recording the response signal of the cavity related to the scanning signal, and analyzing the response signal to determine if the cavity is leaking air.
The method includes generating a sine wave scanning signal as the input signal, with a frequency range of 20-2 kHz. The response signal is then analyzed by calculating an impedance curve of the cavity based on the response signal. An impedance peak value of the curve is compared to a threshold to determine if the cavity is leaking air. If the impedance peak value is greater than the threshold, it is determined that the cavity is not leaking air. Conversely, if the impedance peak value is less than the threshold, it is determined that the cavity is leaking air.
The patent also describes an air leak detection device for a cavity. The device includes a signal generator to input the scanning signal into the cavity, a receiver to receive the response signal of the cavity, a storage to record the response signal, and a processor to analyze the response signal and determine if the cavity is leaking air. The scanning signal generated by the device is a sine wave scanning signal with a frequency range of 20-2 kHz.
The device is specifically designed for use with a sealed cabinet of an audio system. The processor of the device analyzes the response signal to calculate an impedance curve of the cavity and compares the impedance peak value of the curve with a threshold to determine if the cavity is leaking air. The patent also notes that the impedance peak value is inversely proportional to the cavity volume, meaning that larger cavity volumes result in smaller impedance peak values and vice versa.
Overall, this patent describes an air leak detection method, device, and system for a cavity, specifically a sealed cabinet of an audio system. The method and device utilize a sine wave scanning signal and analyze the response signal to determine if the cavity is leaking air. The system includes the cavity and the air leak detection device, which performs the necessary scanning, recording, and analysis functions.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
