ALEXANDRIA, Va., June 10 -- United States Patent no. 12,294,783, issued on May 6, was assigned to CANON K.K. (Tokyo).

"Image pickup apparatus, accessory apparatus, and communication control method" was invented by Masaru Ueda (Saitama, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A camera is operable while a plurality of accessory apparatuses are connected to the camera. The camera perform first communication for simultaneous communication with the plurality of accessory apparatuses using a data communication channel, and second communication for individual communication with a specific accessory apparatus among the plurality of accessory apparatuses using the data communication channel. In performin...