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US 8,913,177 B2Granted
Focus adjustment apparatus having a sensor with a plurality of modes
AssigneeCanon Kabushiki Kaisha
InventorsYasuyuki Suzuki, Tomokazu Yoshida
Life of this patent
Estimating the term…
Abstract
In a focus detection apparatus, a sensor includes a first mode for outputting via the signal line when respective stored charges corresponding to the first and the second AF areas have reached the predetermined charge amount, and a second mode for outputting via the signal line when respective stored charges corresponding to the first or the second AF areas have reached the predetermined charge amount.
Claims11
A focus detection apparatus comprising:
- a sensor configured to photoelectrically convert an object image signal corresponding to first and second AF areas and output the converted signal via a signal line, wherein a storage time during photoelectric conversion is controlled by the sensor monitoring stored charges via the signal line, and wherein the sensor monitors whether the stored charges have reached a predetermined charge amount;
- and
- a controller configured to detect a defocus amount from the object image signal, wherein the controller performs focus adjustment of an imaging lens based on the defocus amount,
- wherein the sensor includes a first mode for outputting via the signal line when respective stored charges corresponding to the first and the second AF areas have reached the predetermined charge amount, and a second mode for outputting via the signal line when respective stored charges corresponding to the first or the second AF areas have reached the predetermined charge amount.
1 more element
A method for controlling a focus detection apparatus, the method comprising:
- photoelectrically converting with a sensor an object image signal corresponding to first and second AF areas and output the converted signal via a signal line, wherein a storage time during photoelectric conversion is controlled by the sensor monitoring stored charges via the signal line, and wherein the sensor monitors whether the stored charges have reached a predetermined charge amount;
- and
- detecting with a controller a defocus amount from the object image signal, wherein the controller performs focus adjustment of an imaging lens based on the defocus amount,
- wherein the sensor includes a first mode for outputting via the signal line when respective stored charges corresponding to the first and the second AF areas have reached the predetermined charge amount, and a second mode for outputting via the signal line when respective stored charges corresponding to the first or the second AF areas have reached the predetermined charge amount.
1 more element
Dependencies are inferred from the claim text.