Rohde & Schwarz has been granted a patent for a parallel filter structure for signal processing. The structure includes a feed forward equalizer circuit and a decision feedback equalizer circuit connected to a signal input, forming a parallel circuit. The circuits process the same input signal in parallel and provide output signals via separate interfaces to a processing circuit. An oscilloscope and a signal processing method are also provided. GlobalData’s report on Rohde & Schwarz 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 Rohde & Schwarz, wireless network optimization was a key innovation area identified from patents. Rohde & Schwarz's grant share as of June 2023 was 1%. Grant share is based on the ratio of number of grants to total number of patents.
Parallel filter structure for processing a time and value discrete input signal
A recently granted patent (Publication Number: US11689392B2) describes a parallel filter structure for processing a signal. The structure includes a processing circuit, a signal input for receiving a time and value discrete input signal, a feed forward equalizer circuit, and a decision feedback equalizer circuit. The feed forward equalizer circuit and the decision feedback equalizer circuit form a parallel circuit and both process the same input signal in parallel. They provide separate output signals that are forwarded to the processing circuit for further processing.
The patent also mentions that the feed forward equalizer circuit and the decision feedback equalizer circuit are communicatively connected with each other. Additionally, the feed forward equalizer circuit's parameters can be set based on the decision feedback equalizer circuit's parameters, determined by a cost function that minimizes the error between the output signals of both circuits.
The parallel filter structure can be implemented on a single chip, specifically an application-specific integrated circuit (ASIC). The feed forward equalizer circuit can be implemented in the real-time section of the chip, while the decision feedback equalizer circuit can be implemented in the non-real-time section.
The patent further describes the use of the parallel filter structure in an oscilloscope. The oscilloscope includes a trigger circuit connected to the feed forward equalizer circuit and an eye diagram circuit connected to the decision feedback equalizer circuit. These circuits are separately formed and connected to the parallel filter structure via separate output interfaces.
In summary, the granted patent discloses a parallel filter structure for signal processing. It includes a feed forward equalizer circuit and a decision feedback equalizer circuit that process the same input signal in parallel and provide separate output signals. The structure can be implemented on a single chip, such as an ASIC, and can be used in an oscilloscope with separate trigger and eye diagram circuits. The parameters of the feed forward equalizer circuit can be set based on the decision feedback equalizer circuit's parameters, determined by a cost function.
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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.
