Subaru has been granted a patent for a steering angle detecting apparatus that features a steering angle sensor with two relative angle detectors and an absolute angle processor. The system includes a diagnostic unit to monitor and update absolute steering angles based on detected relative angles. GlobalData’s report on Subaru 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 Subaru, Battery management systems was a key innovation area identified from patents. Subaru's grant share as of June 2024 was 64%. Grant share is based on the ratio of number of grants to total number of patents.
Steering angle detecting apparatus with diagnostic capabilities
The granted patent US12043305B2 describes a steering angle detecting apparatus designed to enhance the accuracy and reliability of steering angle measurements in vehicles. The apparatus includes a steering angle sensor that features two relative steering angle detectors and an absolute steering angle processor. These detectors are responsible for measuring two relative steering angles based on the rotation of a steering shaft, with each detector operating at different phases. The absolute steering angle processor calculates the absolute steering angles by analyzing the phase differences between the detected relative angles. Additionally, the apparatus incorporates a diagnostic unit that verifies whether an angular signal indicating the absolute steering angle is being outputted. This unit includes an absolute steering angle storage for maintaining the latest absolute steering angle, a relative steering angle output detector to identify which detector is active, and a diagnostic processor that updates the latest absolute steering angle when necessary.
The patent further specifies that the diagnostic unit can either be integrated within the steering angle sensor itself or located in a drive assist processor that aids the driver based on the absolute steering angle. The claims also outline the circuitry's role in determining the output status of the angular signal, storing the latest absolute steering angle, and updating this value based on the output from the relative steering angle detectors. This innovative approach aims to ensure continuous and accurate steering angle detection, which is crucial for advanced driver-assistance systems and overall vehicle safety.
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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.
