MUMBAI, India, Nov. 2 -- Intellectual Property India has published a patent application (202631119537 A) filed by Indian Institute Of Information Technology Ranchi on October 06, 2026, for A System And Method For Offline Reverse Geocoding Of Geographic Coordinates.
Inventors include Rajesh Dwivedi; Roshan Singh; Dhiran Kumar Mahto; Rajeev Srivastava; Alok Gupta; and Aditya Rajput.
The application for the patent was published on October 30, 2026, under issue no. 44/2026.
Abstract: ABSTRACT “A SYSTEM AND METHOD FOR OFFLINE REVERSE GEOCODING OF GEOGRAPHIC COORDINATES” The present invention provides a system (100) for offline reverse geocoding of geographic coordinates, comprising at least one processor (102) and a memory (104) storing a first precomputed administrative index and a second precomputed administrative index as process-resident hash-maps keyed by cell identifiers of a hexagonal hierarchical discrete global grid at a first resolution level and a coarser second resolution level respectively. A lookup engine executed by said processor (102) projects an input coordinate pair, received from a satellite-based positioning receiver (400), to a primary cell identifier, performs a constant-time hash-map lookup in the first index and, upon failure, computes a parent cell identifier and performs a second lookup in the second index, returning an administrative record or a null value. Each lookup completes in constant time without any network, file or database dependency. Figure 3 on sheet no. 3 of the drawings may accompany the abstract when published
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