KT has been granted a patent for a single photon detector that includes a gate signal generator and a photon detection signal subtractor. The device operates in Geiger mode to detect single photons while minimizing noise interference, enhancing detection accuracy through a specified time interval between signals. GlobalData’s report on KT 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 KT, Adaptive video coding was a key innovation area identified from patents. KT's grant share as of June 2024 was 61%. Grant share is based on the ratio of number of grants to total number of patents.
Single photon detector with noise subtraction capability
The patent US12038324B2 describes a novel single photon detector designed to enhance the detection of single photons while minimizing the impact of noise, particularly dark count noise. The detector comprises a gate signal generator that produces a gate signal with a specified pulse width, which is crucial for timing the detection process. A first photon detector operates in Geiger mode to detect incoming photons and generates a photon detection signal at a designated time point. To improve the accuracy of the detection, a photon detection signal subtractor is employed to remove noise signals, including dark count noise, from the photon detection signal. This subtraction process occurs at a predetermined time interval, ensuring that the timing of the detection is optimized.
Additionally, the patent outlines the inclusion of a second photon detector that generates a noise signal, which is also utilized in the subtraction process. This second detector operates under conditions that intentionally produce dark count noise, allowing for a more effective noise cancellation. The claims further specify that the first photon detector can function at room temperature without the need for cooling systems, enhancing its practicality for various applications. The method of operating the detector involves generating the gate signal, detecting the photon, and performing noise subtraction, all while maintaining precise timing between the initial gate signal and the subsequent detection output. This innovative approach aims to improve the reliability and efficiency of single photon detection in various scientific and technological fields.
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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.
