Abstract: An image capturing apparatus, including an image capturing element and having an optical axis, includes a control circuit to control the image capturing apparatus, a display panel arranged on a rear surface side of an exterior member, and a heat dissipation fan arranged on a bottom surface side of the exterior member. An image capturing element board, a control circuit board, and the display panel are arranged in a direction of the optical axis. A duct, extending from a first ventilation hole to a second ventilation hole formed to face the first ventilation hole across the optical axis, passes through an area among the image capturing element board, the control circuit board, and the bottom surface side of the exterior member. The heat dissipation fan is arranged inside the duct arranged in the area, the control circuit board, and the bottom surface side of the exterior member.

Abstract: An image pickup apparatus, having a grip portion, an image sensor, and a mount portion receives attachment of an interchangeable lens, includes a control circuit, a display panel disposed on a rear face side of an exterior member, and a heat dissipation fan disposed on a bottom surface side of the exterior member. The image sensor, control circuit, and display panel are arranged in an optical axis direction. A duct, having a first vent, is disposed between the grip and mount portions of a front face of the exterior member, extends in the optical axis direction from a top toward a bottom surface side between substrates of the image sensor and the control circuit, and connects to a second vent formed across an optical axis. The heat dissipation fan is disposed inside the duct and is located on bottom surface sides of the image sensor and the control circuit substrates.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: Provided is an error correction decoding device including an inner code iterative decoding circuit, a parameter generation circuit, and a first control circuit. The first control circuit is configured to: receive, as parameters, a threshold and a maximum iteration count which are generated by the parameter generation circuit; and compare, when an iteration count does not reach the maximum iteration count, a non-zero-value count sequentially output from the inner code iterative decoding circuit and the threshold set for each iteration count, and stop an iterative operation by the inner code iterative decoding circuit when a result of the comparison satisfies a stopping condition set in advance.

Abstract: An electronic apparatus that is capable of reducing occurrence of malfunction when an accessory is attached without enlarging an accessory shoe device. The electronic apparatus includes an accessory shoe device and a controller. The accessory shoe device is electrically connectable with an accessory and has terminals that are arranged in a line in a first direction that intersects perpendicularly with an attaching direction of the accessory. The controller is electrically connected to the terminals. At least one of the terminals differs from the other terminals in a length of an externally exposed part in a second direction that intersects perpendicularly with both the attaching direction and the first direction.

Abstract: An image pickup apparatus, having a grip portion, an image sensor, and a mount portion receives attachment of an interchangeable lens, includes a control circuit, a display panel disposed on a rear face side of an exterior member, and a heat dissipation fan disposed on a bottom surface side of the exterior member. The image sensor, control circuit, and display panel are arranged in an optical axis direction. A duct, having a first vent, is disposed between the grip and mount portions of a front face of the exterior member, extends in the optical axis direction from a top toward a bottom surface side between substrates of the image sensor and the control circuit, and connects to a second vent formed across an optical axis. The heat dissipation fan is disposed inside the duct and is located on bottom surface sides of the image sensor and the control circuit substrates.

Abstract: An image capturing apparatus, including an image capturing element and having an optical axis, includes a control circuit to control the image capturing apparatus, a display panel arranged on a rear surface side of an exterior member, and a heat dissipation fan arranged on a bottom surface side of the exterior member. An image capturing element board, a control circuit board, and the display panel are arranged in a direction of the optical axis. A duct, extending from a first ventilation hole to a second ventilation hole formed to face the first ventilation hole across the optical axis, passes through an area among the image capturing element board, the control circuit board, and the bottom surface side of the exterior member. The heat dissipation fan is arranged inside the duct arranged in the area, the control circuit board, and the bottom surface side of the exterior member.

Abstract: An imaging apparatus, having an imaging element has top, bottom, front, and rear sides, includes exterior members, a control circuit on a control circuit board to control the imaging apparatus, a display panel on the rear side as one of the exterior members, and a heat release fan. The control circuit board and the display panel are arranged sequentially in a direction of an optical axis from the front side to the rear side. A duct having a vent formed on the duct rear side as one of the exterior members extends from the rear side to the front side and from the top side to the bottom side and connects to a bottom side vent formed on the bottom side as one of the exterior members. The heat release fan is inside the duct near the bottom side below the control circuit board as one of the exterior members.

Abstract: A shoe device of an accessory that secures necessary functions and mechanical strength when the accessory is used with attaching to an electronic apparatus and that improves convenience during use when the accessory is used without attaching to an electronic apparatus. An engagement member is attachable to and detachable from an accessory shoe device of an electronic apparatus by sliding in a first direction. A holding member holds the engagement member. An attachment part is provided in the engagement member or the holding member and allows attachment of a member different from the accessory shoe device. A connection member has connection terminals arranged in a second direction that intersects perpendicularly with the first direction and is arranged in a front of the holding member in the first direction. The attachment part is provided behind the connection terminals in the first direction.

Abstract: A decoder that is a decoding apparatus includes an error-correction decoder that executes error correction decoding processing of iteratively performing decoding processing with a window size and the number of decoding iterations indicated by decoding parameters, on received data converted into a spatially coupled low-density parity-check code, and a decoding parameter control unit that updates the decoding parameters on the basis of a decoding result obtained by the iteratively executed decoding processing.

Abstract: A shoe apparatus includes an engagement portion with an accessory shoe apparatus included in an electronic apparatus, a plurality of connection terminals, where a first direction is an attachment direction to the accessory shoe apparatus, which are arranged in a second direction orthogonal to the first direction, and located on a front side of the engagement portion in the attachment direction, and a connector that includes protrusion portions that protrude in a third direction orthogonal to the first and second directions on both outer sides of the plurality of connection terminals in the second direction. The protrusion portion includes a slope portion on a side that does not face the plurality of connection terminals such that a width in the second direction at a position of a tip in the third direction is narrower than a width at a position away from the tip.

Abstract: 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 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.

Abstract: 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.

Abstract: An accessory shoe apparatus on an electronic apparatus includes an engagement member and a communication. A shoe apparatus on an accessory apparatus is detachably attachable to the accessory shoe apparatus. The engagement member engages with the shoe apparatus and including an opening portion that faces the engaged shoe apparatus. The communication element performs wireless communication with the shoe apparatus via an inside of the opening portion.

Abstract: Provided is an optical transmission device including: a symbol demapping unit; a likelihood generation circuit configured to generate likelihoods relating to the reception signal; and an error correction decoding unit configured to execute soft decision decoding. The likelihood generation circuit includes: a first one-dimensional-modulation lookup table configured to input the signal of the I-axis component as an argument to output a first likelihood; a second one-dimensional-modulation lookup table configured to input the signal of the Q-axis component as an argument to output a second likelihood; and a two-dimensional-modulation lookup table configured to input, as an argument, the signal being the concatenation of the signal of the I-axis component and the signal of the Q-axis component, to generate a third likelihood. The error correction decoding unit is configured to execute the soft decision decoding based on the first likelihood, the second likelihood, and the third likelihood.

Abstract: Provided is an error correction decoding device including an inner code iterative decoding circuit, a parameter generation circuit, and a first control circuit. The first control circuit is configured to: receive, as parameters, a threshold and a maximum iteration count which are generated by the parameter generation circuit; and compare, when an iteration count does not reach the maximum iteration count, a non-zero-value count sequentially output from the inner code iterative decoding circuit and the threshold set for each iteration count, and stop an iterative operation by the inner code iterative decoding circuit when a result of the comparison satisfies a stopping condition set in advance.