Silicon Laboratories has been granted a patent for a receiver that can demodulate data transmitted using multiple protocols simultaneously. The receiver uses multiple protocol detections during the preamble and packet payload phases to ensure robust detection and reduce false detections. It includes two demodulator paths with different filter bandwidths, a decimator to reduce data, and a correlator bank to detect preamble symbols. GlobalData’s report on Silicon Laboratories 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 Silicon Laboratories, Low Energy IoT network protocols was a key innovation area identified from patents. Silicon Laboratories'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.
Receiver for demodulating data with multiple transmission protocols
A recently granted patent (Publication Number: US11777548B1) describes a receiver that can demodulate data sent using multiple transmission protocols. The receiver includes two demodulator paths, each designed to handle different transmission protocols. The first demodulator path is equipped with a channel filter with a certain bandwidth, while the second demodulator path includes a decimator and a channel filter with a lower bandwidth. A correlator bank is connected to both demodulator paths to detect preamble symbols associated with the various transmission protocols.
The correlator bank consists of multiple correlators that are specifically configured to detect symbols from different protocols. For example, there are correlators dedicated to detecting symbols from a first protocol, a second protocol, a third protocol, and a fourth protocol. The number of symbols detected by the correlators can vary, with higher thresholds used for detecting larger numbers of symbols.
In certain cases, when a certain number of symbols are detected by the first plurality of correlators, additional correlator elements are activated to extend the correlation to a larger number of symbols. This extension can occur up to eight symbols, depending on the number of preamble symbols detected.
The receiver also includes noise detectors and symbol identifier circuits for each demodulator path. These components help identify and filter out noise in the received data, as well as identify the symbols associated with each protocol.
Additionally, the receiver has the capability to switch between different transmission protocols during connection intervals. In these intervals, the decimator in the second demodulator path is bypassed, and the path is reprogrammed to receive data from a different protocol.
Overall, this patent describes a receiver that can effectively demodulate data sent using multiple transmission protocols by utilizing different demodulator paths, correlators, noise detectors, and symbol identifier circuits. The receiver's ability to handle various protocols concurrently and switch between them makes it a versatile solution for receiving data in complex communication systems.
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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.
