Patent ID: 11924543
Assignee: CANON KABUSHIKI KAISHA
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC H

Claim 0:
1. An accessory detachably attached to an electronic apparatus, the accessory comprising:
at least one processor; and
at least one memory coupled to the at least one processor storing instructions that, when executed by the at least one processor, cause the at least one processor to function as an accessory processing unit communicable with an electronic apparatus by a first communication method as communication via a first contact group, and by a second communication method as communication via a second contact group different from the first contact group,
wherein the accessory processing unit controls the communication by the second communication method based on information communicated by the first communication method,
wherein in the second communication method, in response to a change in a signal level of a signal via a first contact included in the second contact group from a first signal level to a second signal level, the accessory processing unit executes communication via a second contact included in the second contact group, and
wherein the accessory processing unit executes communication by the second communication method based on information on the second signal level included in the information communicated by the first communication method.