ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,730,693, issued on Sept. 8, was assigned to PAX COMPUTER TECHNOLOGY (SHENZHEN) Co. LTD. (Shenzhen, China).

"Communication method and apparatus for dual cpus in pos machine, system and medium" was invented by Lihong Xie (Shenzhen, China) and Ling Li (Shenzhen, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present application belongs to the technical field of POS machines, and particularly relates to a communication method for dual CPUs in a POS machine, a system and a medium. The communication method comprises: a security CPU receives a target service calling request initiated by a general CPU; the security CPU controls, according to the targe...