Realtek Semiconductor‘s patent involves an audio control circuit with a USB interface and processing circuit. It determines the host device’s stage (BIOS or operating system) to enable/disable a de-pop circuit. This innovation enhances audio device compatibility and performance during different operational stages. GlobalData’s report on Realtek Semiconductor gives a 360-degree view of the company including its patenting strategy. Buy the report here.

According to GlobalData’s company profile on Realtek Semiconductor, M2M communication interfaces was a key innovation area identified from patents. Realtek Semiconductor's grant share as of February 2024 was 75%. Grant share is based on the ratio of number of grants to total number of patents.

Audio control circuit with usb interface enabling/disabling de-pop circuit

Source: United States Patent and Trademark Office (USPTO). Credit: Realtek Semiconductor Corp

A recently granted patent (Publication Number: US11929722B2) discloses an innovative audio control circuit designed to interface with a host device via a USB interface circuit. The processing circuit within the audio control circuit performs an enumeration process with the host device to determine whether the device is operating in a BIOS stage or an operating system stage. Based on this determination, the processing circuit generates a control signal that either enables or disables a de-pop circuit. This functionality ensures that the audio output is managed effectively based on the operational stage of the host device.

Furthermore, the patent details a control method associated with the audio control circuit, outlining the steps involved in determining the operational stage of the host device and generating the appropriate control signal for the de-pop circuit. By analyzing the contents of packets exchanged during the enumeration process, the processing circuit can accurately identify whether the host device is in the BIOS stage or the operating system stage. This method allows for precise control over the audio output, ensuring that the de-pop circuit is activated or deactivated accordingly. Additionally, the patent specifies that the control signal is transmitted to the de-pop circuit located outside the chip through a specific pin, further enhancing the functionality and versatility of the audio control circuit.

To know more about GlobalData’s detailed insights on Realtek Semiconductor, buy the report here.

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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.

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.