ROHM had six patents in advanced materials during Q2 2024. ROHM Co Ltd filed a patent for a signal processing device that includes circuits for receiving, detecting the envelope, amplifying differentially, and selecting signals based on reflected waves from an object. Another patent filed by the company is for a transducer with a film support portion, a vibration film connected to it, a base material with a piezoelectric element arranged on the vibration film to maintain pressure and displacement within a certain range. GlobalData’s report on ROHM gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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ROHM had no grants in advanced materials as a theme in Q2 2024.
Recent Patents
Application: Signal processing device, ultrasonic sensor and vehicle (Patent ID: US20240201348A1)
The present disclosure describes a signal processing device that includes a receiving circuit, an envelope detection circuit, a differential amplifier circuit, and a selection circuit. The receiving circuit generates a reflected wave signal from an object, which is then processed by the envelope detection circuit to generate an envelope detection signal. The differential amplifier circuit amplifies this signal differentially, and the selection circuit chooses between the envelope detection signal or a delayed version of it, and the differentially amplified signal or a signal derived from the difference between the two.
Additionally, the patent claims detail the configuration of the differential amplifier circuit to clamp the differentially amplified signal, ensuring it does not fall below a predetermined value. The envelope detection signal can be obtained by detecting either the upper or lower envelope of the reflected wave signal, with the selection circuit choosing the greater signal between the envelope detection signal and the differentially amplified signal. The device can be used in an ultrasonic sensor with a piezoelectric element to receive the reflected wave, which can then be integrated into a vehicle for various applications.
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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.
