Abstract: A lens device according to one aspect of the presently disclosed subject matter obtains camera information indicating whether a mounted camera is a first camera with an AF-frame display function or a second camera without the AF-frame display function; when the camera information indicating the first camera is obtained, when the camera information indicating the second camera is obtained and an automatic tracking mode is set, the lens device changeably sets position and size of the AF frame; and when the camera information indicating the second camera is obtained and the automatic tracking mode is not set, the lens device fixes the AF frame at a predetermined position and size.

Abstract: An information processing apparatus including an interface that receives a wireless signal, a power supply that converts an input direct current (DC) power supply into a predetermined voltage by switching the input DC power supply at a switching frequency to generate a driving power supply, and a controller that controls the switching frequency based on a condition of the interface.

Abstract: An autofocus system includes: a focus operating device which performs focusing in a shooting screen of a camera; a best focus range detecting device which detects a range of a best focus state from the shooting screen representing the result of the focusing performed by the focus operating device; a face detecting device which detects a range of a human face from the shooting screen; an AF frame automatic setting device by which, when a human face exists in the range being in the best focus state in the shooting screen, the position of an AF frame representing the range of an AF area that is the range to be focused by autofocus in the shooting screen, is automatically set to a face frame representing the range of the human face; and an AF frame automatic tracking device which automatically tracks a subject in the set AF frame.

Abstract: An autofocus system includes: an image pickup unit that takes a subject image formed by an optical system; a target subject detection unit that detects a target subject, which is previously registered as an autofocus target, in a photographing image taken by the image pickup unit; a lens-to-subject distance calculation unit that calculates a lens-to-subject distance to the target subject based on information on a photographing angle of view depending on a focal length of the optical system, a size of the target subject in the photographing image, and a size of the target subject in real space; and a rough AF unit that controls a focus of the optical system so as to bring into focus the subject which is located at the lens-to-subject distance calculated by the lens-to-subject distance calculation unit.

Abstract: In a focus demand connected to a lens unit of a television camera, a joystick for designating the direction of movement of an AF area is disposed. A direction change switch for reversing the direction of movement of the AF area with respect to the direction of operation of the joystick is also provided. The focus demand is reversed in vertical and horizontal directions between the case of being mounted to be operated by the right hand and the case of being mounted to be operated by the left hand.

Abstract: Disclosed is an auto focus device that automatically and easily sets an AF frame to a focus range desired by a cameraman in an AF system. An auto focus device includes: a focusing unit that performs focusing on an imaging screen of a camera; a best focus range detecting unit that detects a best focus range from the imaging screen showing the focus result of the focusing unit; and an AF frame automatic setting unit that automatically sets the position of an AF frame indicating the range of an AF area, which is a target range focused by auto focus in the imaging screen, in the detected best focus range.

Abstract: An autofocus system includes: a focus operating device which performs focusing in a shooting screen of a camera; a best focus range detecting device which detects a range of a best focus state from the shooting screen representing the result of the focusing performed by the focus operating device; a face detecting device which detects a range of a human face from the shooting screen; an AF frame automatic setting device by which, when a human face exists in the range being in the best focus state in the shooting screen, the position of an AF frame representing the range of an AF area that is the range to be focused by autofocus in the shooting screen, is automatically set to a face frame representing the range of the human face; and an AF frame automatic tracking device which automatically tracks a subject in the set AF frame.

Abstract: An auto focus system is provided in which a focus movement speed and a cut off frequency of a filter for detecting a contrast from a video signal in AF of a contrast detecting system can be manually set in AF, so that an optimum AF can be achieved under various photographing conditions.

Abstract: An autofocus system includes: an image pickup unit that takes a subject image formed by an optical system; a target subject detection unit that detects a target subject, which is previously registered as an autofocus target, in a photographing image taken by the image pickup unit; a lens-to-subject distance calculation unit that calculates a lens-to-subject distance to the target subject based on information on a photographing angle of view depending on a focal length of the optical system, a size of the target subject in the photographing image, and a size of the target subject in real space; and a rough AF unit that controls a focus of the optical system so as to bring into focus the subject which is located at the lens-to-subject distance calculated by the lens-to-subject distance calculation unit.

Abstract: To provide an automatic focusing system which has an AF pickup device dedicated to an AF operation and which can perform the AF operation with high following ability to a moving subject. At the time of performing an AF control operation, a CPU of a lens unit sets a focusing state of a photographing optical system to an in-focus state by controlling a focus lens group FL of the photographing optical system so that an estimated focus value representing the magnitude of a contrast of a subject image is the maximum. The CPU adjusts an electronic shutter speed of the AF pickup device based on a brightness level of an image signal acquired by the AF pickup device and enhances the frame rate of the AF pickup device as high as possible.

Abstract: The present invention provides an autofocus system comprising: a lens device interchangeably attached to a camera and provided with an autofocus device which controls focus so that a subject within a predetermined AF area range within the image-taking range of the camera is focused; a controller which is connected to the lens device as an accessory device and which gives AF area information specifying the AF area range to the autofocus device, the autofocus system; an AF area information acquisition device which acquires the AF area information given to the autofocus device from the controller; and an AF area display device which visibly displays the AF area range in a picture taken by the camera based on the AF area information acquired by the AF area information acquisition device.

Abstract: A shake detecting sensor includes: a plurality of shake detecting sensors that detects a shake; and an adder circuit that adds shake signals output from the plurality of shake detecting sensors. A signal added by the adder circuit is output as a shake signal output from one sensor.

Abstract: The present invention provides an AF-area display apparatus integrated in a lens unit that is interchangeably mounted on a camera and has an automatic focusing device for controlling focusing in such a way that the camera is focused on a photographic subject within an AF area in an imaging area of the camera, or connected as an auxiliary device to the lens unit, the AF-area display apparatus comprising: an AF-area obtaining device that obtains the AF area currently set in the automatic focusing device; a video signal generating device that generates a video signal for displaying the AF area obtained through the AF-area obtaining device; and a video signal outputting device that outputs the video signal generated by the video signal generating device.

Abstract: A lens system according to an aspect of the present invention includes a focus operation member for manual operation of a focus of a taking lens, a focusing direction detecting device which detects a moving direction of the focus for setting a focused state with respect to a present position of the focus, as a focusing direction, an operating direction display device which displays an operating direction of the focus operation member for moving the focus to the focusing direction on the basis of the focusing direction detected by the focusing direction detecting device, and a reversing device which reverses the operating direction displayed by the operating direction display device.

Abstract: Disclosed is an auto focus device that automatically and easily sets an AF frame to a focus range desired by a cameraman in an AF system. An auto focus device includes: a focusing unit that performs focusing on an imaging screen of a camera; a best focus range detecting unit that detects a best focus range from the imaging screen showing the focus result of the focusing unit; and an AF frame automatic setting unit that automatically sets the position of an AF frame indicating the range of an AF area, which is a target range focused by auto focus in the imaging screen, in the detected best focus range.

Abstract: An automatic focusing system comprises: a region configuring device which configures a main subject region including a main subject within a photographing screen; a focusing control device which controls focusing so that a focus state of the main subject is a best focus state; a focus state obtaining device which divides the photographing screen into a plurality of regions and obtains a focus state from each region; a device storing the focus state obtained from each region; a movement detecting device which references the stored focus state of each region to detect the movement of a group of regions located either within the main subject region and its vicinity or within the main subject region and are in a best focus state; and a region moving device which moves the main subject region in accordance with the movement of the group of regions that are in the best focus state.

Abstract: To provide a lens system which is to be used with a virtual system and which can curtail time and labor required by settings of the virtual system by outputting data pertaining to an angle of view, an object distance, and a principal point position, all being required by the virtual system, the lens device of an actual camera used for photographing an actual video to be used by the virtual system includes a CPU determining information about the angle of view, the object distance, and the principal point position, all being required to set a virtual camera in the virtual system, on the basis of a zoom position and a focus position detected by encoders, and transmits the information to the virtual system.

Abstract: A focusing drive apparatus includes a determination device that is configured to determine whether a present focusing condition is an AF-able condition or an AF-unable condition. In the AF-able condition, the focusing lens group can be moved to the in-focus position by the AF device. In the AF-unable condition, the focusing lens group cannot be moved to the in-focus position by the AF device. The apparatus also includes a change control device that is configured to set a motive power transmission mechanism in the engaged state to enable the focusing lens group to be moved to the in-focus position by the AF device when the determination device determines that the present focusing condition is the AF-able condition, and to set the motive power transmission mechanism in the disengaged state when the determination device determines that the present focusing condition is the AF-unable condition.

Abstract: The auto focus system obtains focus information on a lens-interchangeable camera body of a TV camera and sends the focus information to a lens apparatus mounted on the camera body. The lens apparatus controls an auto focus based on the focus information. It is thereby possible to control the focus on adequate conditions according to optical specifications of the lens apparatus and so on.

Abstract: To provide an automatic focusing system which has an AF pickup device dedicated to an AF operation and which can perform the AF operation with high following ability to a moving subject. At the time of performing an AF control operation, a CPU of a lens unit sets a focusing state of a photographing optical system to an in-focus state by controlling a focus lens group FL of the photographing optical system so that an estimated focus value representing the magnitude of a contrast of a subject image is the maximum. The CPU adjusts an electronic shutter speed of the AF pickup device based on a brightness level of an image signal acquired by the AF pickup device and enhances the frame rate of the AF pickup device as high as possible.