Toshiba’s patent describes a reading system that includes a reader and a calculator to assess the certainty of reading characters from segment displays. The calculator employs four distinct processing methods to derive scores based on pixel states, match ratios, character dimensions, and comparisons with preset patterns. GlobalData’s report on Toshiba 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 Toshiba, Battery management systems was a key innovation area identified from patents. Toshiba's grant share as of July 2024 was 34%. Grant share is based on the ratio of number of grants to total number of patents.
Character reading certainty calculation system
The granted patent US12073635B2 describes a processor designed to enhance the accuracy of character recognition from images captured of segment displays. The processor's circuitry is configured to calculate a certainty score for reading characters displayed on a segment display by employing various processing techniques. These techniques include setting determination regions for each segment, thinning character pixels, counting lines, and calculating angles to derive a first score. Additional processing steps involve extracting pixels that match a preset mask to compute a second score, analyzing the character image's dimensions to generate a third score, and detecting character portions to produce a fourth score. The final certainty score is derived from one or more of these individual scores.
Furthermore, the patent outlines a processing system that integrates the described processor with an imaging device capable of capturing images of the segment display. The system can reimage the display if the certainty score falls below a predetermined threshold, ensuring improved character recognition. The processor can also handle multiple characters simultaneously, applying the aforementioned processing techniques to each character image and calculating certainty scores accordingly. The patent also includes provisions for a non-transitory computer-readable storage medium that stores a program to execute these processes, thereby facilitating the character recognition task in 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.
