Imaging apparatus and interchangeable lens
AssigneeCanon Kabushiki Kaisha
InventorHiromichi Sakamoto
Life of this patent
Estimating the term…
Abstract
An imaging apparatus capable of mounting an interchangeable lens thereon includes first and second terminals for communicating with the interchangeable lens, and a control unit capable of switching between a first communication mode in which a clock signal is output from the first terminal and communication is performed using the second terminal based on the clock signal and a second communication mode in which communication is performed using the second terminal without outputting the clock signal from the first terminal. The control unit is configured to output a predetermined signal from the first terminal to the interchangeable lens when a predetermined condition is not satisfied in the second communication mode.
Claims12
An imaging apparatus capable of mounting an interchangeable lens thereon, the imaging apparatus comprising:
- first and second terminals for communicating with the interchangeable lens;
- and
- a control unit capable of switching between a first communication mode in which a clock signal is output from the first terminal and communication is performed using the second terminal based on the clock signal and a second communication mode in which communication is performed using the second terminal without outputting the clock signal from the first terminal,
- wherein the control unit is configured to output a predetermined signal from the first terminal to the interchangeable lens when a predetermined condition is not satisfied in the second communication mode.
An interchangeable lens mountable on an imaging apparatus, the interchangeable lens comprising:
- first and second lens terminals for communicating with the imaging apparatus;
- and
- a lens control unit capable of switching between a first communication mode in which a clock signal is received from the first lens terminal and communication is performed using the second lens terminal based on the clock signal and a second communication mode in which communication is performed using the second lens terminal without receiving the clock signal from the first lens terminal,
- wherein the lens control unit is capable of detecting a predetermined signal sent from the imaging apparatus to the first lens terminal when a predetermined condition is not satisfied in the second communication mode.
An imaging system comprising:
- an imaging apparatus and an interchangeable lens mountable on the imaging apparatus,
- wherein the imaging apparatus includes first and second terminals for communicating with the interchangeable lens,
- wherein the imaging apparatus includes a control unit capable of switching between a first communication mode in which a clock signal is output from the first terminal and communication is performed using the second terminal based on the clock signal and a second communication mode in which communication is performed using the second terminal without outputting the clock signal from the first terminal,
- wherein the control unit is configured to output a predetermined signal from the first terminal to the interchangeable lens when a predetermined condition is not satisfied in the second communication mode,
- wherein the interchangeable lens includes first and second lens terminals for communicating with the imaging apparatus,
- wherein the interchangeable lens includes a lens control unit capable of switching between a first communication mode in which a clock signal is received from the first lens terminal and communication is performed using the second lens terminal based on the received clock signal and a second communication mode in which communication is performed using the second lens terminal without receiving the clock signal from the first lens terminal, and
- wherein the lens control unit is capable of detecting a predetermined signal sent from the imaging apparatus to the first lens terminal when a predetermined condition is not satisfied in the second communication mode.
Dependencies are inferred from the claim text.