Canon Kabushiki Kaisha

Kei Tohyama

Kenji Ishii

Kouji Ikeda

Takayuki Shu

Yoshinobu Okano

Hiromichi Sakamoto

Hiromi Hayasaki

Yuhei Hattori

Tatsuya Hanayama

Sho Miyazaki

An electronic apparatus includes a plurality of contacts electrically connectable to an accessory and arranged in a first direction orthogonal to a direction in which the accessory is attached. The contacts include an attachment detection contact to detect an attachment of the accessory to the electronic apparatus, and a communication request contact for a communication request from the accessory to the electronic apparatus. The attachment detection and communication request contacts are disposed between a contact closest one end and a contact closest to another end in the first direction. The attachment detection contact is disposed between the communication request contact and the contact closest to the one end. In the first direction, a distance between the attachment detection contact and the communication request contact is shorter than that between the communication request contact and the contact closest to the other end.

Electronic apparatus and accessory

An electronic apparatus to which an accessory is to be detachably attached includes a plurality of contacts electrically connectable to the accessory and arranged in a row. The contacts include a plurality of functional signal contacts to which signals having functions that are different functions according to a type of the accessory are connected, reference potential contacts, to each of which a reference potential is connected, and contacts that are used to supply power to the accessory or to communicate with the accessory. The functional signal contacts include a first functional signal contact and a second functional signal contact. A distance from the first functional signal contact to a reference potential contact closest to the first functional signal contact and a distance from the second functional signal contact to a reference potential contact closest to the second functional signal contact are different from each other.

An electronic apparatus to which an accessory is to be detachably attached includes a plurality of contacts electrically connectable to the accessory and arranged in a first direction orthogonal to an attachment direction of the accessory. The plurality of contacts include an attachment detection contact that is used to detect an attachment of the accessory to the electronic apparatus, and a first clock contact that is used to communicate a first clock signal in communication between the electronic apparatus and the accessory. A potential of the attachment detection contact changes from a predetermined potential to a reference potential different from the predetermined potential after the accessory is attached to the electronic apparatus. The attachment detection contact is disposed next to the first clock contact.

An electronic apparatus to which an accessory is to be detachably attached includes a plurality of contacts electrically connectable to the accessory and arranged in a first direction orthogonal to an attachment direction of the accessory. The plurality of contacts include first reference potential contacts that are contacts disposed at both ends of the plurality of contacts and are connected to a reference potential, and second reference potential contacts that are connected to the reference potential and are contacts disposed at both ends of part of the plurality of contacts other than the first reference potential contacts in a case where the accessory is connected to the part of the plurality of contacts.

A shoe apparatus attachable to and detachable from an accessory shoe apparatus of an electronic apparatus in a first direction includes a plurality of connection terminals arranged in a second direction orthogonal to the first direction, a shoe engagement portion engageable with the accessory shoe apparatus, and a terminal protecting portion configured to project from the shoe engagement portion toward a tip side in the first direction and to protect the plurality of connection terminals. The plurality of connection terminals are exposed in a direction orthogonal to the first and second directions from the terminal protecting portion, and include slopes that tilt in an exposed direction from inside to outside in the second direction on both sides in the second direction of the terminal protecting portion.

Shoe apparatus, accessory, accessory shoe apparatus, and electronic apparatus

An electronic apparatus includes an accessory shoe via which an accessory is to be detachably attached to the electronic apparatus. The accessory shoe includes a plurality of contacts that is electrically connectable to the accessory and arranged in a row, and include an attachment detection contact, a power supply contact, and a first reference potential contact that is connected to a reference potential. A potential of the attachment detection contact becomes the reference potential in a case where the accessory is attached to the electronic apparatus. The attachment detection contact is disposed on one of both sides of the power supply contact, and the first reference potential contact is disposed on another side. The first reference potential contact is disposed outside the power supply contact in an arrangement direction of the plurality of contacts.

An electronic apparatus detachably attached to an accessory via an accessory shoe includes contacts electrically connectable to the accessory via the accessory shoe and arranged in a row. The contacts include a first signal contact used to transmit a data signal in a communication between the electronic apparatus and accessory, a second signal contact used to transmit a clock signal in synchronization with the data signal in the communication, and a third signal contact used to receive a communication request signal from the accessory. The first and second signal contacts are arranged next to each other. The third signal contact is disposed on an opposite side of than the second signal contact with respect to the first signal contact. A transmission of the data signal via the first signal contact is executed in response to a reception of the communication request signal via the third signal contact.

An accessory is detachably attachable to an electronic apparatus including a display. The accessory includes a communication unit configured to communicate with the electronic apparatus and an operation unit. If an operation is performed on the operation unit after the communication unit transmits information indicating a type of the accessory to the electronic apparatus, the communication unit transmits, to the electronic apparatus, a request for causing the display to display a setting image related to the accessory.

Accessory and electronic apparatus

An electronic apparatus capable of confirming connection between a body and an accessory without performing communication therebetween. When transmitting first data to the accessory in synchronism with a clock signal and receiving second data from the accessory in synchronism with the clock signal, the body can perform data communication selectively by the first or second communication method. A body microcomputer changes the level of the first data from high level to low, and then further changes the same from low to high in a state where the clock signal is at high in the first communication method. The microcomputer detects a change in level of the second data responsive to the change in level of the first data, and detects accessory connection and compatibility with the second communication method based on detection result.

Lighting device that is capable of connecting to electronic apparatus, and control method therefor

An image pickup apparatus reduced in wasteful electric power consumption due to execution of a GPS function and capable of adding the newest position information measured by the GPS function to an image photographed by interval photographing. An image pickup section has a plurality of image pickup modes including an interval mode for performing image pickup at photographing intervals of interval photographing. A GPS module acquires position information indicative of a position of the image pickup apparatus at GPS positioning intervals. The GPS positioning interval is set according to a user's operation. In a case where the image pickup section is set to the interval mode, GPS positioning interval is changed from the interval set according to a user's operation to an interval synchronized with the photographing interval of interval photographing.

Image pickup apparatus having GPS function and interval photographing function, and method of controlling the same

Electronic apparatus capable of connecting to accessory device, method of controlling the same, storage medium, and accessory device

A wireless communication system in which a master device and a slave device each performing wireless communication by a frequency hopping system can operate in synchronism with each other. In the master device, a master microcomputer outputs a first sync signal to a RTC unit after a transmission timing signal is received and a carrier frequency is changed a predetermined number of times according to a first change timing signal. In the slave device, a slave microcomputer outputs a second sync signal to a RTC unit after a reception timing signal is received and a carrier frequency is changed the predetermined number of times according to a second change timing signal.

Wireless communication system including frequency hopping electronic devices, and control method and storage medium therefor

When discharge power calculated based on a current value detected by a current detector is smaller than expected maximum power, which is the maximum power expected in an actual operation, a discharge efficiency at the expected maximum power is set as a discharge efficiency used for remaining capacity calculation. This ensures that a remaining capacity based on power required for a photographing operation can be detected.

Electronic apparatus

An image pickup apparatus configured to execute wireless communication with a flash apparatus by radio waves via a communication unit includes a signal output unit configured to output a flash start signal to the flash apparatus, a flash detection unit configured to detect a flash emitted by the flash apparatus according to the flash start signal, an acquisition unit configured to acquire a time difference between a predetermined reference timing and a timing at which the flash is regarded to have been emitted by the flash apparatus according to a result of detection by the flash detection unit, and a control unit configured to control at least one of a timing of output of the flash start signal to the flash apparatus by the signal output unit and a timing of start of an operation executed corresponding to the flash by the flash apparatus according to the time difference acquired by the acquisition unit.

Growing community of inventors

Kawasaki, Japan

Kei Tohyama