ALEXANDRIA, Va., March 17 -- United States Patent no. 12,579,870, issued on March 17, was assigned to Compal Electronics Inc. (Taipei, Taiwan).

"Wireless signal monitoring method in private network field" was invented by Meng-Yuan Sung (Taipei City, Taiwan) and Yen-Tsung Chia (Taipei City, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A wireless signal monitoring method is used in a private network field. A mobile image pickup device is used to patrol the private network field. If a wireless signal from a wireless terminal device is abnormal, the mobile image pickup device takes photos at a preset position in the private network field. Furthermore, after the cause of the wireless signal abnormality i...