Abstract: A display device is provided, which includes a panel configured to display an image using an LED backlight configured to emit light incident on the panel, an image signal interface configured to provide an image signal to the panel, and a power supply including an LED driver configured to generate constant current, wherein the LED driver is detachable from the power supply.

Abstract: A position adjusting unit according to some example embodiments includes a base; a mounting part, a driving unit, and a locking part on the base. The mounting part may be movably installed on the base and configured to have an optical element mounted thereto. The driving unit may include a plurality of actuators connected between the base and the mounting part. The driving unit may be configured to move the mounting part with respect to the base. The locking part may be configured to provide a fixing force for fixing a position of the mounting part. The locking part may be configured to release the fixing force when electricity is supplied to the locking part.

Abstract: A method and apparatus for preventing dark current in a battery management system (BMS) are provided. A battery control apparatus may include a voltage regulator configured to regulate a voltage of a driving power supplied from a power supply to a processor, a first switch, located between the power supply and the voltage regulator, configured to switch on and off a connection between the power supply and the voltage regulator, and a second switch configured to control the first switch based on an input of a driving signal to operate the processor.

Abstract: The present invention provides the following camera. A first camera-side contact pin is a pin corresponding to detection of a signal change caused by coupling of a camera accessory. A second camera-side contact pin is a pin corresponding to supply of power for communication with the coupled camera accessory. A third camera-side contact pin is a pin corresponding to supply of a driving force to an actuator of the camera accessory. The first, second, and third camera-side contact pins are disposed in such a manner that, when a camera-side mount shifts from a first state to a second state, the third camera-side contact pin contacts first and second accessory-side contact surfaces, the second camera-side contact pin contacts the first accessory-side contact surface, and the first camera-side contact pin does not contact the second and third accessory-side contact surfaces.

Abstract: The camera accessory is attachable to a camera. The camera accessory includes an accessory mount to be detachably coupled with a camera mount). The accessory mount is provided with accessory bayonet claws and brought, by relative rotation with the camera mount, from a first state in which each of the accessory bayonet claws is inserted between camera bayonet claws provided in the camera mount into a second state in which the accessory bayonet claws engage with the camera bayonet claws to complete coupling of the accessory and camera mounts. The camera accessory is further provided with accessory contact surfaces arranged in a relative rotation direction of the mounts in the accessory mount. The accessory contact surfaces includes a first accessory contact surface used for indicating type of the camera accessory and is provided adjacent to the accessory bayonet claw.

Abstract: An imaging apparatus to which an accessory is detachably attached includes an imaging unit configured to convert an object image into an electrical signal, a signal generation unit configured to generate a vertical synchronizing signal that is synchronized with a timing of exposure of the imaging unit and output the generated vertical synchronizing signal, a control unit configured to control communication with the accessory based on the vertical synchronizing signal, a first terminal configured to send a clock signal generated by the control unit to the accessory, and a second terminal configured to communicate data with the accessory based on the clock signal, in which the control unit controls a signal level at the first terminal to a predetermined level when the communication of the data ends, and then changes the signal level in synchronization with the output of the vertical synchronizing signal.

Abstract: A photographing device is disclosed. The photographing device includes a display configured to display live view of a subject, a focus adjuster configured to adjust a focus in a manual focus mode according to a user manipulation, a focus calculator configured to automatically calculate a target focus which corresponds to the subject, and a controller configured to display a manual focus guide including a first indicator indicating a current focus and a second indicator indicating the target focus on the display, and in response to the focus being adjusted by the user manipulation, change location of the first indicator within the manual focus guide according to the adjustment state.

Abstract: A power supply control apparatus that includes an instruction component, an execution component and a power supply control component is provided. The power supply control component is equipped with at least two measurement functions that have different measurement durations for cases in which the duration until interrupting the power supply to device(s) is measured, wherein measurement is activated with a first measurement function of relatively long measurement duration at a completion time of prior image processing, and measurement is activated with a second measurement function of relatively short measurement duration for device(s) to which power is being supplied at the time of completion of the prior image processing but which are not required in later image processing.

Abstract: An image capture device includes an image sensor for capturing image data of a scene, and a display screen for displaying a preview of the captured image of the scene. Additionally, the image capture device includes a photovoltaic solar cell for outputting electrical energy responsive to environmental lighting conditions. A control section determines whether the image capture device is or is not currently being used in a bright environment. Responsive to a determination that the image capture device is currently being used in a bright environment, the control section increases brightness of the display screen, and switches electrical energy outputted from the photovoltaic cell for use by the display screen.

Abstract: A lens movement control method and a lens movement control apparatus of a camera module for preventing allophone of a Voice Coil Actuator (VCA) are provided. The lens movement control method of a camera module includes switching the camera module from a camera operation mode to a camera stop mode, generating a control signal for removing the occurrence of VCA allophone in the camera stop mode, moving a lens to a VCA allophone removal location based on the generated control signal, and powering-off the camera module to move the lens moved to the VCA allophone removal location to a bottom surface of the lens.

Abstract: Provided is a power saving-type autofocusing camera module and a power saving method, an auto focusing power saving-type camera module of the present disclosure, including a control part setting a controlled-output-amount of the lens to 0 in a resolving power ensured duration, the camera module containing an autofocusing-use lens actuator.

Abstract: Provided is an auto-focusing camera module having a liquid lens. The auto-focusing camera module includes a lens barrel having a liquid lens and a solid lens stacked and disposed therewith; an image sensor for focusing light that is passed through the liquid lens and the solid lens; a substrate provided in a lower end of the lens barrel to electrically mount the image sensor; and a power supply unit fixed integrally in the lens barrel and electrically coupled between the liquid lens and the substrate to apply a power source to the liquid lens. Therefore, the auto-focusing camera module may be useful to control its focus to coincide with high pixels and high performances of the camera module, manufacture a small final product by lowering the entire height of the camera module, enhancing the productivity of the camera module by employing a simple liquid lens to simplify an assembly structure of the liquid lens that is in contact with the substrate, and reduce the manufacturing cost.

Abstract: An electronic camera includes: an image-capturing unit including an image-capturing device and an image-capturing optical system; a blur detecting unit; a moving unit moving part or all of the image-capturing unit to eliminate the blur according to the detection result; a reading unit reading the image from the image-capturing device; a viewfinder displaying unit continuously displaying the image read; an operating unit accepting a user instruction; and a controlling unit performing, when the start of photographing is not instructed, electronic blur correction by controlling the reading unit to continuously change an image-capturing range of the image-capturing device or continuously changing a range of the image read to be displayed on the viewfinder displaying unit, and ends, when it is instructed, the electronic blur correction and performs optical blur correction by controlling the moving unit. Accordingly, appropriate blur correction is feasible with an increase in power consumption suppressed.

Abstract: Image projection apparatus wherein, a focusing lens is controlled when a shutter is operated so that a contrast signal, obtained when a luminance signal from a camera signal processing circuit is supplied to an auto focusing detection circuit, any become maximum. A laser diode is driven to generate laser beams that are condensed into parallel laser beams by a condenser. These parallel laser beams are applied to a hologram plate and thereby diffracted. The diffracted laser beams interfere with each other, to produce a hologram image with sufficient contrast. Therefore, satisfactory focusing can be made in an auto focus mode of the contrast detection system or in a manual focus mode.

Abstract: In order to be able to reduce power consumption while making possible manual operation in any scene when the photographic situation demands its use, an image pickup apparatus has a ring member arranged concentrically with the optical axis of lenses, a detecting device for detecting the quantity of variation resulting from the rotation of the ring member, a control device for shifting/stopping a group of optical lenses in the direction of their optical axis on the basis of the result of detection by the detecting device, and a power supply control device for changing the state of power supply to the detecting device according to the mode of use. Power supply to the detecting device is prohibited when in the automatic focusing mode, and permitted in a focusing-locked state when in the photo shooting mode. It is also prohibited in the viewing mode.

Abstract: In order to be able to reduce power consumption while making possible manual operation in any scene when the photographic situation demands its use, an image pickup apparatus has a ring member arranged concentrically with the optical axis of lenses, a detecting device for detecting the quantity of variation resulting from the rotation of the ring member, a control device for shifting/stopping a group of optical lenses in the direction of their optical axis on the basis of the result of detection by the detecting device, and a power supply control device for changing the state of power supply to the detecting device according to the mode of use. Power supply to the detecting device is prohibited when in the automatic focusing mode, and permitted in a focusing-locked state when in the photo shooting mode. It is also prohibited in the viewing mode.

Abstract: A camera, at power-on, determines elapsed time since power-off. The camera restores at least one control setting to a persistent value when the elapsed time is less than a predetermined threshold. The camera restores the at least one control setting to a default value when the elapsed time exceeds the predetermined threshold.

Abstract: A distance measuring device, or a focus detector, including a plurality of sensors provided in association with a plurality of different areas, and a respective plurality of processing circuits provided in association with the plurality of sensors, to process signals output from the plurality of sensors, where power selectively is supplied only to a sensor(s) and a processing circuit(s) associated with the sensor(s) that correspond to a predetermined area from among the plurality of different areas. The predetermined area may be determined on the basis of the state of a power source (e.g., detected voltage level), the focal length of a shooting optical system, the state of an auxiliary light for irradiating an object, and the like.

Abstract: To prevent temporary reduction of battery voltage when driving a shutter, an exposure control drive apparatus is provided with a boosting circuit for boosting a voltage of the battery and outputting a boosted voltage. A capacitor is charged by the boosted voltage for driving an actuator of an exposure control mechanism. A detecting circuit detects a current flowing in the boosting circuit and a control circuit controls operation of the boosting circuit in accordance with a magnitude of the detected value so that the boosting circuit is prevented from boosting the battery voltage when the detected current exceeds a predetermined level and is permitted to boost the battery voltage when the detected current is below the predetermined level. In this manner, the current flowing from the battery is prevented from exceeding a maximum level.

Abstract: There is disclosed an image pickup apparatus having a lens barrel which is sinkable into the apparatus body, and is controlled, if necessary, not to sink into the body even when the power is switched off The image pickup apparatus has a power key which switches on/off the power in accordance with a key operation, an instruction key which instructs a power source off state in which the lens barrel does not sink into the body, a storage unit which stores positions of lenses constituting a lens optical system when an instruction is given by the instruction key, and a control unit which switches off the power without sinking the lens barrel into the body in accordance with an instruction by the instruction key, and checks or adjusts positions of the lenses based on the positions stored in the storage unit when the power is switched on.

Abstract: The lens apparatus permits rapid focusing by the operator demanding an autofocus start-up direction to carry out AF in the direction in an AF mode. When a start of the AF mode is instructed, an AF standby state of waiting for the operator to demand the AF start-up direction by operating a focus operation member, thereby permitting the operator to properly demand the AF start-up direction, and permitting the demand to be appropriately detected. When automatically switching from the state where the operator operates the focus operation member to the AF, condition of the switching is that a focus evaluation value exceeds a predetermined threshold based on the operation of the focus operation member, or that an operation amount of the focus operation member is changed more then a predetermined amount, thereby permitting further rapid focusing and improvement of operability.

Abstract: A camera body to which an interchangeable lens can be mounted, the interchangeable lens having at least one electrical component and a lens controller which controls operations of the interchangeable lens, includes a power supply for supplying power to the interchangeable lens, and a body controller which can communicate with the lens controller. The body controller transmits specific information to the lens controller to cause at least one of the lens controller and the at least one electrical component to operate with low power when the body controller drives an electrical component provided in the camera body which requires a large drive current.

Abstract: A focus detecting device includes a light receiving device which receives reflection light from an object of focus detection, an auxiliary light device which illuminates the object of focus detection with auxiliary light, and a control circuit which controls an illuminating action of the auxiliary light device and performs focus detection on the basis of a received-light signal output of the light receiving device. While the auxiliary light device is in process of being controlled to illuminate the object of focus detection, the control circuit compares the received-light signal output of the light receiving device with a prescribed value and causes the focus detection being made by controlling the auxiliary light device to stop if the received-light signal output is less than the prescribed value.

Abstract: A rangefinder apparatus, which projects light toward a range-finding object, detects light reflected from the range-finding object, and measures the distance to the range-finding object according to a position where the light is detected, includes a step-up regulator for raising the power source voltage of a battery; a step-down regulator for receiving the raised voltage outputted from the step-up regulator and outputs a depressed voltage lower than the raised voltage; an autofocus integrated circuit actuated upon receiving the depressed voltage, for outputting a signal corresponding to the distance to the range-finding object according to the signal from a light-detector; and a stabilizing capacitor, connected between a location near a power terminal of the integrated circuit receiving the depressed voltage and a location near a grounding terminal of the integrated circuit, for stabilizing the depressed voltage.

Abstract: A rangefinder apparatus includes an infrared light-emitting diode for projecting light toward a range-finding object; a position sensitive device for detecting projected light reflected from the range-finding object and outputting a signal according to a position at which the reflected light is detected; and arithmetic circuit for carrying out an arithmetic operation according to the signal from the photosensitive device and outputting a signal corresponding to a distance to the range-finding object; an integrating circuit for integrating the signal from the arithmetic circuit by repeatedly discharging an integrating capacitor with an integrating period in response to the signal from the arithmetic circuit, to output a signal corresponding to a result of the integration produced by charging the integrating capacitor; a CPU for detecting the distance to the range-finding object according to the signal from the integrating circuit; a battery for supplying a power source voltage; and a step-up regulator for rais

Abstract: The present invention provides a power supply unit of a camera which efficiently drives a heavy-load system even when a power supply voltage is low and thus drives a heavy-load circuit in a short time in the photographing sequence of the camera without any trouble. The power supply unit includes a charging section for charging a capacitor with a boosted DC power supply voltage, a switching section which receives the output voltage of the charging section and the DC power supply voltage and selectively applies one of these voltages to the heavy-load circuit, and a control section for controlling operations of the switching section and the charging section. The control section controls the switching section such that the output voltage of the charging section is output in the early stage of a time period during which the power supply voltage is being applied to the heavy-load circuit and then the DC power supply voltage is output.

Abstract: The present invention relates to an electronic apparatus which is arranged to drive a load by means of a microcomputer to which the boosted voltage obtained by boosting a battery output by boosting means is applied. The present invention also relates to a method of making the boosting means inoperative upon completion of a load-driving operation by the computer after the battery output is restored to a predetermined level, and switching the voltage to be applied to the microcomputer in the electronic apparatus from the boosted output to the battery output, thereby preventing the microcomputer from malfunctioning due to a lowering in the battery output.

Abstract: The position of a rear lens group at the time power is turned off is stored in a memory as a relative value on the basis of the positions of the rear lens group focusing on a subject at a near point and at an infinity point, respectively, with respect to the position of a zoom lens group at power off. When power is turned on, the rear lens group is moved to the reference position by a pulse motor, and the position of the zoom lens group is detected by an encoder. After the position detection operation, the rear lens group is moved to a position calculated according to the current position of the zoom lens group and the relative value stored in the memory.

Abstract: A laser diode current drive control circuit including a drive circuit supplying a modulated laser diode current drive signal, a laser diode drive current source having a switch responsive to the drive circuit for controlling flow of drive current to the laser diode. The control circuit is further provided with one or more fault sensing circuits coupled to the diode current switch and responsive to a fault condition in the operation of the diode that would cause the diode power output to exceed a predetermined maximum safety limit to open the switch thereby terminating the flow of diode drive current. A feedback sensing circuit operating synchronously with the current drive signal is effective to open the switch when a normal feedback control signal is lost. A drive signal sensing circuit is effective to open the switch when integrated power output of the laser diode exceeds a safety related limit value.

Abstract: A light source illuminates a developed silver salt photographing film having a magnetic recording portion on which magnetic data is recorded. A light source drive section drives the light source. An image read section reads image data from the film illuminated by the light source. A reproduction section reproduces magnetic data recorded on the magnetic recording portion of the film. A power feeding control section prohibits a power feeding to the light source drive section or reduces an amount of power feeding when the magnetic data is reproduced by the reproduction section.

Abstract: An autofocusing camera allows a distance measurement operation even if the electric charge amount accumulated in the condenser does not reach a predetermined value when a picture to be taken does not require flash (strobe) light emission.

Abstract: A manual focusing circuit of a camera comprising a rotation ring having a plurality of projections, wherein the ring is manually rotated forward and rearward by a user. The manual focusing circuit further comprises a first sensing element, which is coupled to one of the projections of the rotation ring, for producing a first signal; a second sensing element, which is coupled to another of the projections of the rotation ring, for producing a second signal having a phase difference of 90 degrees against the first signal; a signal stabilizer, which is coupled to the second sensing element, for removing a noise from the second signal to produce a stabilized signal representing a rotation number of the rotation ring; and circuitry, which is coupled to the first sensing element and the signal stabilizer, for producing an output signal representing a rotation direction of the rotation ring based on the first signal and the stabilized signal.