Abstract: Property information of a communication device is initialized in a second server when the communication device is connected to a control network to which a first server for storing key information and a second server for storing property information are connected. Key information necessary for security communication with respect to the second server is acquired from the first server and property information containing at least an identifier and network address of the communication device is transmitted to the second server via security communication using the key information.

Abstract: A focusing device in a camera comprises a lens barrel having a lens system, the lens barrel together with the lens system being moved along the optical axis to focus the lens system on an object locted in the range of ordinary photographing distances and on an object located in the range of closest focusing distances shorter than the ordinary photographing distances, a detector for detecting a distance to an object, to provide an output signal according to the distance thus detected, a main drive system for moving the lens barrel in response to the output signal provided by the detector, to focus the lens system on the object located in the range of ordinary photographing distances, and an auxiliary drive system with a member operated by the operator. The auxiliary drive system moving the lens barrel independently of the main drive system, to focus the lens system on the object located in the range of closest focusing distances.

Abstract: A camera for exposing a film to the image of an object to be photographed includes housing means, flashlight emitting means having a light-emitting portion for applying light toward the object to be photographed, the light-emitting portion being movable between a first position in which it is projected from the housing means and a second position in which it is received in the housing means, and an optical member provided in the housing means so as to be positioned between the light-emitting portion and the object to be photographed when the light-emitting portion is in the second position, the member having an optical characteristic for an area in which light is applied to the object to be photographed from the light-emitting portion through the optical member to change relative to an area in which light is directly applied to the object to be photographed from the light-emitting portion.

Abstract: An automatic focusing device includes a detecting device for detecting a state of an object image formed by an objective lens, a driving device for driving the lens in response to the detecting device, and a setting device for setting a moving range in which the lens is movable by the driving device. The moving range may be selected from mutually different plural ranges including a first range and a second range which have a mutually overlapping portion, or including a range containing a part of a normal moving range and a part of a macro-photographing moving range. Further, the moving range may be selected by setting an end position thereof beyond which the lens is prevented from moving.

Abstract: A camera having alternately selectable shutter release priority and focus control priority modes of operation. In the shutter release priority mode, operation of an automatic focusing device is inhibited when the shutter is actuated, and the shutter may be released irrespective of whether the photographic image is in focus. In the focus control priority mode, the shutter cannot be released unless the image is in focus. When the camera is in the shutter release priority mode, photographs may be taken in rapid succession without regard for precise focusing.

Abstract: A focus adjusting device of a camera has moving means for moving a phototaking lens in the direction of the optical axis thereof, a motor producing a revolution output, a manually operated ring provided on the outer periphery of a lens barrel and rotatable circumferentially of the lens barrel, mode selecting means for selecting one of a manual mode in which the phototaking lens is driven by the manually operated ring and an automatic mode in which the phototaking lens is driven by the motor, and clutch means for coupling the moving means and the manually operated ring together when the manual mode has been selected by the mode selecting means and for cutting off the coupling between the moving means and the manually operated ring when the automatic mode has been selected by the mode selecting means.

Abstract: A device for automatically focusing an objective lens includes detecting means capable of detecting the positional relation of the objective lens with respect to an in-focus position at which an image of an object is formed on a predetermined focal plane, means including an electric motor and moving the objective lens toward the in-focus position by the motor, and means for controlling the driving of the motor in response to the detecting means. The control means includes a power supply circuit means for connecting the motor to a power source, a braking circuit means for short-circuiting the two terminals of the motor, and means for alternately operating the power supply circuit means and the braking circuit means to thereby decelerate the revolution of the motor when the objective lens is within a predetermined range near the in-focus position.

Abstract: In a camera having a phototaking lens capable of manual focusing operation by an operating ring and automatic focusing operation by a drive control device responsive to the output of an in-focus detecting device and wherein the manual focusing operation and the automatic focusing operation can be selectively accomplished by means of a change-over operating device, there are provided display means capable of displaying information on the in-focus condition of the phototaking lens in response to the output of the in-focus detecting device, focus lock means operable to restrain the movement of the phototaking lens at any position related to the focusing operation of the phototaking lens and at the same time fix the display by the display means, and means for blocking the operation of the focus lock means in response to the selection of the manual focusing operation by the change-over operating device.

Abstract: An automatic focusing apparatus for a camera includes object brightness detecting means for detecting the brightness of an object and producing an output corresponding to the brightness, in-focus detecting means for detecting whether the phototaking lens of the camera lies within or outside a predetermined in-focus range near the in-focus point and producing outputs corresponding to the respective cases, and phototaking lens driving means for driving the phototaking lens to its in-focus position in accordance with the output of the object brightness detecting means and the output of the in-focus detecting means.