Electronic apparatus and accessory

An electronic apparatus comprising:

• an accessory shoe portion to which an accessory is detachably attached;
• and
• a plurality of contacts provided to the accessory shoe portion and arranged in a first direction orthogonal to a direction in which the accessory is attached,
• wherein the plurality of contacts include a first contact whose potential changes from a predetermined potential in a state that the accessory is attached, where the predetermined potential is set to a potential in a state where the accessory is not attached, and a second contact whose potential changes from a high level to a low level after the potential of the first contact changes from the predetermined potential and before a predetermined communication with the accessory is started,
• wherein the second contact is disposed at a substantially center position of the accessory shoe portion in the first direction, and
• wherein the first contact is disposed at a position more distant from a center of the accessory shoe portion than the first contact in the first direction.

An accessory detachably attached to an electronic apparatus, the accessory comprising a plurality of contacts electrically connectable to the electronic apparatus and arranged in a first direction orthogonal to a direction in which the accessory is attached to the electronic apparatus,

• wherein the plurality of contacts include an attachment detection contact used to detect an attachment of the accessory to the electronic apparatus, and a communication request contact used for a communication request from the accessory to the electronic apparatus,
• wherein the attachment detection contact and the communication request contact are disposed between a contact closest to one end and a contact closest to another end in the first direction,
• wherein the attachment detection contact is disposed between the communication request contact and the contact closest to the one end,
• wherein in the first direction, a distance between the attachment detection contact and the communication request contact is shorter than a distance between the communication request contact and the contact closest to the other end, and
• wherein in the first direction, the distance between the communication request contact and the contact closest to the one end is equal to or shorter than the distance between the communication request contact and the contact closest to the other end.

An electronic apparatus to which an accessory is detachably attached, the electronic apparatus comprising a plurality of contacts electrically connectable to the accessory and arranged in a first direction orthogonal to a direction in which the accessory is attached,

• wherein the plurality of contacts include an attachment detection contact used to detect an attachment of the accessory to the electronic apparatus, and a communication request contact used for a communication request from the accessory to the electronic apparatus,
• wherein the attachment detection contact and the communication request contact are disposed between a contact closest one end and a contact closest to another end in the first direction,
• wherein the attachment detection contact is disposed between the communication request contact and the contact closest to the one end,
• wherein in the first direction, a distance between the attachment detection contact and the communication request contact is shorter than a distance between the communication request contact and the contact closest to the other end, and
• wherein error processing is performed if the attachment of the accessory to the electronic apparatus is detected via the attachment detection contact and the communication request is not detected via the communication request contact.

An electronic apparatus to which an accessory is detachably attached, the electronic apparatus comprising a plurality of contacts electrically connectable to the accessory and arranged in a first direction orthogonal to a direction in which the accessory is attached,

• wherein the plurality of contacts include an attachment detection contact used to detect an attachment of the accessory to the electronic apparatus, and a communication request contact used for a communication request from the accessory to the electronic apparatus,
• wherein the attachment detection contact and the communication request contact are disposed between a contact closest one end and a contact closest to another end in the first direction,
• wherein the attachment detection contact is disposed between the communication request contact and the contact closest to the one end,
• wherein in the first direction, a distance between the attachment detection contact and the communication request contact is shorter than a distance between the communication request contact and the contact closest to the other end,
• wherein communication contacts used for a communication between the electronic apparatus and the accessory are disposed between the attachment detection contact and the communication request contact and on an opposite side of the attachment detection contact with respect to the communication request contact, respectively,
• wherein the electronic apparatus can communicate with the accessory by a first communication method and a second communication method different from the first communication method,
• wherein a communication contact used for a communication in the first communication method is disposed on the opposite side of the attachment detection contact with respect to the communication request contact, and
• wherein a communication contact used for a communication in the second communication method is disposed between the communication request contact and the attachment detection contact.

An electronic apparatus to which an accessory is detachably attached, the electronic apparatus comprising a plurality of contacts electrically connectable to the accessory and arranged in a first direction orthogonal to a direction in which the accessory is attached,

• wherein the plurality of contacts include an attachment detection contact used to detect an attachment of the accessory to the electronic apparatus, and a communication request contact used for a communication request from the accessory to the electronic apparatus,
• wherein the attachment detection contact and the communication request contact are disposed between a contact closest one end and a contact closest to another end in the first direction,
• wherein the attachment detection contact is disposed between the communication request contact and the contact closest to the one end,
• wherein in the first direction, a distance between the attachment detection contact and the communication request contact is shorter than a distance between the communication request contact and the contact closest to the other end, and
• wherein the attachment of the accessory is detected based on whether or not a potential of the attachment detection contact is a predetermined potential that is set to a potential in a state where the accessory is not attached.

An accessory detachably attached to an electronic apparatus, the accessory comprising a plurality of contacts electrically connectable to the electronic apparatus and arranged in a first direction orthogonal to a direction in which the accessory is attached to the electronic apparatus,

• wherein the plurality of contacts include an attachment detection contact used to detect an attachment of the accessory to the electronic apparatus, and a communication request contact used for a communication request from the accessory to the electronic apparatus,
• wherein the attachment detection contact and the communication request contact are disposed between a contact closest to one end and a contact closest to another end in the first direction,
• wherein the attachment detection contact is disposed between the communication request contact and the contact closest to the one end,
• wherein in the first direction, a distance between the attachment detection contact and the communication request contact is shorter than a distance between the communication request contact and the contact closest to the other end,
• wherein communication contacts used for a communication between the electronic apparatus and the accessory are disposed between the attachment detection contact and the communication request contact and on an opposite side of the attachment detection contact with respect to the communication request contact, respectively,
• wherein the accessory can communicate with the electronic apparatus by a first communication method and a second communication method different from the first communication method,
• wherein a contact used for a communication in the first communication method is disposed on the opposite side of the attachment detection contact with respect to the communication request contact, and
• wherein a communication contact used for a communication in the second communication method is disposed between the communication request contact and the attachment detection contact.