Abstract: Provided is a lens apparatus having a first holding member that holds a first lens unit and a second holding member that holds the first holding member, in which the first and second holding members are engaged with each other so as to be capable of relative movement by means of a plurality of engagement portions provided circumferentially at unequal intervals including a first interval and a second interval larger than the first interval, and in which there is provided, in a portion between the engagement portions arranged at the second interval in at least one of the first and second holding members, an abutment portion radially abutting the other holding member.

Abstract: A network system which facilitates the task of replacing switches pertaining to a detected link failure. A server network is formed from a plurality of switches and links. The link state of each port on the switches is being monitored by a link-down detector, and a switch port that has entered a link-down state from a link-up state is identified as an inoperative port. Upon detection of such a link-down event, a function disabler disables link functions of specified ports of other switches in the switch group to which the switch having the inoperative port belongs, so that the servers on the network will change their setups all at once and continue the communication through new paths.

Abstract: A storage system is disclosed that stores data across plural storage devices. The storage system includes plural modules. Each of the modules includes a storage device including a data storage section that has plural slice areas to store data elements one in each, and a control-information storage section that stores control information of the plural slice areas, a communications-function section having a function of sending and receiving the data elements stored in the slice areas in the data storage section. The modules communicate with each other to replicate the data element stored in the slice area into an unused slice area in another module so as to have data redundancy.

Abstract: Disclosed is a delta-sigma modulated fractional-N PLL frequency synthesizer which performs fractional-N by modulating a divider that divides output frequencies from a voltage controlled oscillator. Fractional part data F from a register is forwarded to a second adder. A first adder adds output from a delta-sigma modulator to output therefrom delayed and inverted by a delay inverter to generate an artificially random bit stream averaging zero. The second adder adds fractional part data F to output from the first adder to generate an artificially random data sequence averaging a value of fractional part data. The generated data sequence is forwarded to the delta-sigma modulator. An adder adds integral part data to output from the delta-sigma modulator. Added output is forwarded to the divider.

Abstract: Provided is a lens apparatus having a first holding member that holds a first lens unit and a second holding member that holds the first holding member, in which the first and second holding members are engaged with each other so as to be capable of relative movement by means of a plurality of engagement portions provided circumferentially at unequal intervals including a first interval and a second interval larger than the first interval, and in which there is provided, in a portion between the engagement portions arranged at the second interval in at least one of the first and second holding members, an abutment portion radially abutting the other holding member.

Abstract: In order to avoid disappearance of output symbols in accompaniment with DC voltage fluctuations occurring at the timing of switching gain in receiving systems for mobile telephones or the like compatible with W-CDMA systems, the present invention provides a variable gain amplifier circuit, a gain control circuit and a mobile communication terminal apparatus, in which a PGA section is comprised of PGAs having different amplification widths continuously arranged in plural stages as in, two coarse adjustment PGAs, a fine adjustment PGA and a coarse adjustment PGA from the input side to the output side; and a gain control circuit has a memory storing a history of gain control with regard to the PGA section and a logic circuit individually controlling gain of each PGA.

Abstract: An interchangeable lens is disclosed which prevents the camera body and interchangeable lens from being damaged even if an attempt is made to erroneously mount therebetween. The interchangeable lens is a second interchangeable lens whose flange back is the same as that of a first interchangeable lens and includes a protruding portion protruding from a mount reference surface. The protruding amount of the protruding portion is set when the second interchangeable lens has a specific phase relationship with a first camera, so that the protruding portion contacts a first wall portion of the first camera, and is set when the second interchangeable lens has a phase relationship with the first camera other than the specific phase relationship and a bayonet lug of the second interchangeable lens contacts a bayonet lug of the first camera, so that the protruding portion is away from the first wall portion.

Abstract: An interchangeable lens (second interchangeable lens) is disclosed which allows a protruding amount from a mount reference surface of the interchangeable lens to be increased. The second interchangeable lens has a protruding portion protruding from a mount reference surface toward an image plane, has a larger protruding amount than the first interchangeable lens and has the same flange back as the first interchangeable lens. The first camera prevents mounting of the second interchangeable lens by the protruding portion of the second interchangeable lens contacting the first wall portion. The second camera includes a second wall portion provided at a position retreated from the protruding portion. The second camera includes a rotatable mirror member, and the rotation center of the mirror member is positioned on the opposite side of a finder optical system with respect to a plane including an in-plane direction of the mirror member.

Abstract: The present invention provides an intermediate adapter capable of being mounted on a first camera on which a first interchangeable lens is mounted and a second camera on which the first interchangeable lens and a second interchangeable lens are mounted. The second interchangeable lens includes a protruding portion protruding toward an image plane from its mount reference surface whose protruding amount is larger than that of the first interchangeable lens and has a flange back equal to that of the first interchangeable lens. The first camera has a first wall portion inside its mount and prevents mounting of the second interchangeable lens by the protruding portion of the second interchangeable lens contacting the first wall portion. The second camera includes a second wall portion provided inside its mount at a position retreated from the protruding portion of the second interchangeable lens.

Abstract: A file system which operates on an operating system has: an access executing unit which, when an access such as writing or reading to/from a file occurs, processes the file in accordance with the access; a user defined process holding unit which holds a user defined process which has previously been defined by the user; and a defined process executing unit which executes the user defined process by using the access to the file as a trigger.

Abstract: A configuration, in which switches 107 and 109 are loaded to bias lines 104 and 105, is adopted. It is such structured that a high frequency switch 100 can be changed over at a high speed by closing the switches 107-109 to discharge the electric charge accumulated on PIN diodes D1 and D2 at a high speed when turning OFF the PIN diodes D1 and D2.

Abstract: A lens barrel includes a moving tube arranged to move in an optical axis direction, the moving tube having at least three cams arranged along a circumferential direction thereof, in which an interval between one pair of cams in the circumferential direction is larger than an interval between another pair of cams in the circumferential direction, a cutout being formed in the moving tube at a part between the one pair of cams having the larger interval, and a driving device disposed on the side of the cutout of the moving tube and including a motor having a rotation shaft parallel with the optical axis direction and a gear mechanism having an output gear arranged to rotate according to a rotation of the rotation shaft, the motor and the output gear being juxtaposed, and end parts of the motor and the output gear on the side of the moving tube being inserted within the cutout of the moving tube at least when the moving tube comes closest to the motor and the output gear.

Abstract: A lens barrel includes an external operation member for manual operation, a driving source, a movable lens supported movably along an optical axis, a lens moving mechanism arranged to receive a movement of the external operation member and move the movable lens at least along the optical axis and to receive a motion of the driving source and move the movable lens at least along the optical axis, and a switching mechanism for varying a ratio of the amount of the movement received from the external operation member to the amount of movement of the movable lens.

Abstract: A lens barrel or an optical apparatus comprises a lens unit arranged to be movable in an optical axis direction, a plurality of shafts which hold a stop arranged to block undesirable light and which extend in the optical axis direction, and a support member which supports the plurality of shafts while allowing the plurality of shafts to be moved in the optical axis direction, wherein the plurality of shafts are moved by being pushed by the lens unit, thereby moving the stop.

Abstract: A lens barrel includes a vibrating motor which serves as a driving source, a rotating member driven by the vibrating motor, a bearing mechanism for rotatably supporting the rotating member, and a urging member for urging the rotating member and the roller in a direction in which they make contact with each other. The bearing mechanism includes a roller having an axis which lies in a radial direction of an axis of the vibrating motor.

Abstract: A motor has at least a vibration rod parallel to the axis of a rotor, in which the vibration rod causes a rotary motion in the rotor. The motor is free from the annular stator showing a large attenuation of vibration and is not associated with the stator support. The motor is also provided with a higher efficiency of energy utilization in comparison with a conventional ultrasonic motor, and is free from the stopping or irregular rotation of the rotor. The vibration rod for rotating the rotor requires a smaller space in comparison with the annular stator in the conventional ultrasonic motor.