Image pickup apparatus, lens apparatus, and image pickup system
AssigneeCanon Kabushiki Kaisha
InventorKoji Okada
Life of this patent
Estimating the term…
Abstract
A lens apparatus is detachable from an image pickup apparatus. The lens apparatus includes a controller configured to communicate with the image pickup apparatus in synchronization with a first signal. A communication contains a plurality of blocks in the same cycle of the first signal. The controller transmits information of a first time period to the image pickup apparatus, and prohibits a communication of an m-th block from starting before the first time period passes after a communication of an n-th block starts or ends where n is an integer equal to or larger than 1 and m is an integer larger than n.
Claims9
A lens apparatus detachable from an image pickup apparatus, the lens apparatus comprising a controller configured to communicate with the image pickup apparatus in synchronization with a synchronizing signal,
- wherein a communication between the lens apparatus and the image pickup apparatus is a packet communication having a plurality of blocks in a cycle of the synchronizing signal,
- wherein the controller transmits information of predetermined time stored in the lens apparatus to the image pickup apparatus, and
- wherein the information of the predetermined time indicates a period in which the lens apparatus prohibits the image pickup apparatus from starting a communication of a first block in a next cycle to a specific cycle, the period starting from a timing at which a communication of a last block in the specific cycle of the synchronizing signal starts or ends.
An image pickup apparatus from which a lens apparatus is detachable, the image pickup apparatus comprising a controller configured to communicate with the lens apparatus in synchronization with a synchronizing signal,
- wherein a communication between the image pickup apparatus and the lens apparatus is a packet communication having a plurality of blocks in a cycle of the synchronizing signal, and
- wherein the controller receives information of predetermined time stored in the lens apparatus from the lens apparatus, wherein the information of the predetermined time indicates a period in which the lens apparatus prohibits the image pickup apparatus from starting a communication of a first block in a next cycle to a specific cycle, the period starting from a timing at which a communication of a last block in the specific cycle of the synchronizing signal starts or ends, and the controller starts, after the predetermined time passes after a communication of a last block in a specific cycle of the synchronizing signal starts or ends, a communication of a first block in the next cycle to the specific cycle.
An image pickup system comprising a lens apparatus, and an image pickup apparatus from which the lens apparatus is detachable,
- wherein the lens apparatus comprising a lens controller configured to communicate with the image pickup apparatus in synchronization with a synchronizing signal,
- wherein the image pickup apparatus comprising an image pickup apparatus controller configured to communicate with the lens controller in synchronization with the synchronizing signal,
- wherein a communication between the lens apparatus and the image pickup apparatus is a packet communication having a plurality of blocks in a cycle of the synchronizing signal,
- wherein the lens controller transmits information of predetermined time stored in the lens apparatus to the image pickup apparatus controller,
- wherein the information of the predetermined time indicates a period in which the lens apparatus prohibits the image pickup apparatus from starting a communication of a first block in a next cycle to a specific cycle, the period starting from a timing at which a communication of a last block in the specific cycle of the synchronizing signal starts or ends, and
- wherein the image pickup apparatus controller starts, after the predetermined time passes after the communication of the last block in a specific cycle of the synchronizing signal starts or ends, the communication of the first block in the next cycle to the specific cycle.
Dependencies are inferred from the claim text.