An electronic apparatus attachable to an accessory includes a power supply unit, and a control unit for controlling the power supply unit. The electronic apparatus can transition from a normal operating state to a power-saving state that includes a first power-saving state in which a power supply switch of the electronic apparatus is turned off, and a second power-saving state in which a non-operating state continues for a predetermined time. The control unit receives first information indicating whether or not the power supply from the electronic apparatus to the accessory is requested in the first power-saving state, and second information indicating whether or not the power supply from the electronic apparatus to the accessory is requested in the second power-saving state. The control unit causes the power supply unit to supply the power in the power-saving state where the power supply is requested.

An image pickup apparatus includes a first control unit communicable with the accessory by a first communication method, and a second control unit communicable with the accessory by a second communication method. The first control unit acquires control information on the second communication method from the accessory. The second control unit determines a control method for communication with the accessory based on the control information acquired by the first control unit.

An accessory includes a plurality of communication contacts that includes a first contact, and a control unit that notifies an electronic apparatus of a communication request by changing a signal level of the first contact from a first signal level to a second signal level different from the first signal level, and transmits information indicating a communication factor in response to a reception of a request for the information indicating the communication factor in response to a notification of the communication request. In a case where the control unit notifies the electronic apparatus of the communication request via the first contact in response to a start of a power supply, the control unit performs predetermined communication without receiving the request for the information indicating the communication factor or transmitting the information indicating the communication factor.

The present disclosure relates to a computer implemented method and system for coordinating taking of a picture using a camera and initiation of a flash pulse of at least one flash device. The method is adapted for a system including a first device and at least one remote device. The method comprises the steps of obtaining a time base for a processor element of the first device, estimating a time base for a processor element of each at least one remote device in relation to the time base of the processor element of the first device, scheduling a timing for initiation of the flash pulse of the respective at least one flash device and/or a timing for taking a picture using the camera in the time base of the first device so that the coordination with the timing for taking the picture is obtained, and obtaining at the respective remote device of the system the scheduled timing of initiation of the remote device in the time base of that device.

An electronic apparatus which prevents occurrence of a malfunction even when multiple accessories are attached to the electronic apparatus directly or via an accessory connector. The electronic apparatus includes an attachment part to which an accessory connector is attachable or to which multiple accessories are attachable. On the accessory connector, multiple accessories are attachable. When multiple accessories have been attached to the attachment part or on the accessory connector attached to the attachment part, accessory information is obtained via the attachment part from each of the attached accessories. In a case where overlapping accessories with overlapping functions are found based on the accessory information, the overlapping function of at least one of the overlapping accessories is restricted.

An information processing apparatus (10) includes: a deciding unit configured to decide alignment information to be used for alignment between a first image captured by a first imaging device and a second image captured by a second imaging device having an angle of view wider than an angle of view of the first imaging device, on the basis of imaging-related information related to imaging performed by the first imaging device; and an outputting unit configured to output the alignment information.

A focus adjustment control apparatus is provided which includes: a focus detection unit that calculates an evaluation value with regard to contrast of an image via an optical system to detect a focus adjustment state of the optical system; an acquisition unit that acquires from a lens barrel at least one of a maximum value and a minimum value of an image plane movement coefficient that represents correspondence relationship between a movement amount of a focus adjustment lens included in the optical system and a movement amount of an image plane; and a control unit that uses at least one of the maximum value and the minimum value of the image plane movement coefficient to determine a drive speed for the focus adjustment lens when the focus detection unit detects the focus adjustment state.

A camera includes a lens-camera communication controller and an adapter-camera communication controller. The camera-lens communication channel includes a first data communication channel used during a data communication and a first notification channel used for a notification of a timing of a communication via the first data communication channel. The camera-adapter communication channel includes a second data communication channel used during the data communication and a second notification channel used for a notification of a timing of a communication via the second data communication channel.

The present technology relates to a projector and a projector control method that make it possible to improve the security of the projector. The projector includes a storage section and a communication control section. The storage section stores a connection destination list indicative of equipment connectable to the projector. In a case where the projector is to be connected to another equipment through a network, the communication control section controls connection to the other equipment according to the connection destination list. The present technology is applicable, for example, to a projector or the like that is to be connected to another equipment through a network.

In one aspect of the present disclosure, a digital image capturing device (DICD) is disclosed that includes a device body with a printed circuit board (PCB), and an integrated sensor-lens assembly (ISLA) that is configured for releasable connection to the device body. The PCB defines a plurality of openings that extend therethrough and includes a plurality of connector pins that are fixedly positioned within the openings. The ISLA includes at least one connective surface that is configured for contact with the connector pins to establish electrical communication between the device body and the ISLA.