Patent ID: 11892754
Assignee: CANON KABUSHIKI KAISHA
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 6:
7. An apparatus connected to a camera, the apparatus comprising:
a first communication controller configured to communicate with the camera by using a first communication channel;
a second communication controller configured to communicate with the camera by using a second communication channel connected to the camera and provided separately from the first communication channel; and
an operation member that is operated by a user,
wherein the first communication channel includes a first data communication line used during a data communication, a second data communication line used during a data communication and a first notification line used for a notification of a timing of a communication via the first data communication line,
wherein the second communication channel consists of a third data communication line used during a data communication and a second notification line used for a notification of a timing of a communication via the third data communication line, and
wherein operation data of the operation member is transmitted via the third data communication line.