ALEXANDRIA, Va., June 9 -- United States Patent no. 12,288,435, issued on April 29.
"Database system for controlling the gate of subway riding area" was invented by Jian Liu (Xi'an, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "Inside a railway train, a wall or door is set between the non-restricted carriage and the restricted carriage for separation, including the instruction system, execution system and server. The said instruction system comprises a passenger counting unit, a gate instruction unit and a storage unit; the said execution system comprises a gate control unit arranged on a riding area computer at the next station; and the passenger counting unit transmits the total number of passengers...