Abstract: A self-breathing electrochemical oxygenerator includes an outer housing including an upper housing part and a lower housing part. A cavity formed by the upper housing part includes a battery installation cavity, a controller installation cavity and an electrochemical assembly installation cavity. Batteries are installed within the battery installation cavity. A controller is installed within the controller installation cavity. A self-breathing electrochemical pure oxygen generation assembly is installed within the electrochemical assembly installation cavity. An upper housing body of the upper housing part corresponding to the electrochemical assembly installation cavity has air holes. After the external oxygen output pipe is blocked, through timely manual operation, the pressure within the pure oxygen generation assembly is ensured to fall within a normal range, so as to ensure that the pure oxygen generation assembly works normally, thereby ensuring long service life of the oxygenerator.

Abstract: A photography system includes: a camera containing a first communication unit; and a photography illumination device containing a second communication unit, wherein: the camera wirelessly transmits from the first communication unit to the second communication unit a first signal that commands, from the camera side to the photography illumination device side, a preparatory flash emission that precedes a main flash emission during photography; the photography illumination device wirelessly transmits from the second communication unit to the first communication unit a second signal that includes flash emission timing information of the preparatory flash emission, and that carries information, from the photography illumination device side to the camera side, as to the effect that the first signal has been received; and the camera starts photometric processing during the preparatory flash emission based upon the flash emission timing information.

Abstract: A self-breathing electrochemical oxygenerator includes an outer housing including an upper housing part and a lower housing part. A cavity formed by the upper housing part includes a battery installation cavity, a controller installation cavity and an electrochemical assembly installation cavity. Batteries are installed within the battery installation cavity. A controller is installed within the controller installation cavity. A self-breathing electrochemical pure oxygen generation assembly is installed within the electrochemical assembly installation cavity. An upper housing body of the upper housing part corresponding to the electrochemical assembly installation cavity has air holes. After the external oxygen output pipe is blocked, through timely manual operation, the pressure within the pure oxygen generation assembly is ensured to fall within a normal range, so as to ensure that the pure oxygen generation assembly works normally, thereby ensuring long service life of the oxygenerator.

Abstract: The external device, for example, an electronic flash device, is wirelessly connectable to an information communication device, for example, a camera. The external device includes: a synchronization data creation unit that outputs synchronization data for synchronization of timing of processing related to photography; a packet creation unit that creates a communication packet including control information; and a packet output unit that outputs the communication packet to the exterior by wireless communication. The packet creation unit includes a packet reception unit that receives the communication packet; a detection unit that detects the synchronization data before all of the received communication packets received by the packet reception unit has been read in; and a signal output unit that outputs a synchronization signal used for establishing synchronization of the timing of the processing related to photography on the basis of detection by the detection unit of the synchronization data.

Abstract: A photography system includes: a camera containing a first communication unit; and a photography illumination device containing a second communication unit, wherein: the camera wirelessly transmits from the first communication unit to the second communication unit a first signal that commands, from the camera side to the photography illumination device side, a preparatory flash emission that precedes a main flash emission during photography; the photography illumination device wirelessly transmits from the second communication unit to the first communication unit a second signal that includes flash emission timing information of the preparatory flash emission, and that carries information, from the photography illumination device side to the camera side, as to the effect that the first signal has been received; and the camera starts photometric processing during the preparatory flash emission based upon the flash emission timing information.

Abstract: An information communication device includes: a packet generation unit that generates a packet including timing data at an end of the packet for specifying to an external device a start timing for processing related to photography; a transmitting unit that transmits the packet to the external device by wireless communication; and a transmission control unit that changes a state of packet transmission by the transmission unit according to a start timing of the processing related to photography.

Abstract: An optical sensor receives light of a light emitting tube. A photoelectric current output from the optical sensor is integrated by a capacitor. A stop signal output part compares the generated voltage of the capacitor with a comparison voltage and outputs a light emission stop signal when the generated voltage exceeds the comparison voltage. A voltage setting part predicts, from target amount of light, an amount of overrun light from when the light emission stop signal is output until when light emission of the light emitting tube terminates and sets the comparison voltage so that a total amount of light emission including the amount of overrun light is a target amount of light emission.

Abstract: An information communication device includes: a packet generation unit that generates a packet including timing data at an end of the packet for specifying to an external device a start timing for processing related to photography; a transmitting unit that transmits the packet to the external device by wireless communication; and a transmission control unit that changes a state of packet transmission by the transmission unit according to a start timing of the processing related to photography.

Abstract: The external device, for example, an electronic flash device, is wirelessly connectable to an information communication device, for example, a camera. The external device includes: a synchronization data creation unit that outputs synchronization data for synchronization of timing of processing related to photography; a packet creation unit that creates a communication packet including control information; and a packet output unit that outputs the communication packet to the exterior by wireless communication. The packet creation unit includes a packet reception unit that receives the communication packet; a detection unit that detects the synchronization data before all of the received communication packets received by the packet reception unit has been read in; and a signal output unit that outputs a synchronization signal used for establishing synchronization of the timing of the processing related to photography on the basis of detection by the detection unit of the synchronization data.

Abstract: An optical sensor receives light of a light emitting tube. A photoelectric current output from the optical sensor is integrated by a capacitor. A stop signal output part compares the generated voltage of the capacitor with a comparison voltage and outputs a light emission stop signal when the generated voltage exceeds the comparison voltage. A voltage setting part predicts, from target amount of light, an amount of overrun light from when the light emission stop signal is output until when light emission of the light emitting tube terminates and sets the comparison voltage so that a total amount of light emission including the amount of overrun light is a target amount of light emission.

Abstract: A flash control device for controlling a slave SB that emits a flash upon receiving an operational instruction via optical communication has a flash emitting part for emitting an optical signal used for the optical communication, and a power supply detecting part detecting the attachment of a power pack. The detection result is transmitted to a camera microcomputer via an SB microcomputer. A communication intensity designating part and a communication intensity determining part decide, based on the detection result received via the camera microcomputer, the intensity of the optical signal to be emitted by the flash emitting part.

Abstract: A flash control device for controlling a slave SB that emits a flash upon receiving an operational instruction via optical communication has a flash emitting part for emitting an optical signal used for the optical communication, and a power supply detecting part detecting the attachment of a power pack. The detection result is transmitted to a camera microcomputer via an SB microcomputer. A communication intensity designating part and a communication intensity determining part decide, based on the detection result received via the camera microcomputer, the intensity of the optical signal to be emitted by the flash emitting part.

Abstract: A photographing system in which a camera and a flash device cooperate to perform flash photographing and a photographic information transmission system in which a second hand-held terminal such as a flash device is controlled based on a signal relating to photographing that is transmitted from a first hand-held terminal such as a camera to the second hand-held terminal. A unique identification code for identification of the first hand-held terminal or the second hand-held terminal is provided in at least one of the first hand-held terminal and the second hand-held terminal. The second hand-held terminal has a collating program for collating a unique identification code that is transmitted from the first hand-held terminal by using radio waves as a medium with a unique identification code provided in the second hand-held terminal.

Abstract: The present invention relates to an electronic flash device capable of dimming control, particularly with the objective of enhancing the dimming precision in weak light emissions. The electronic flash device of the present invention thus predicts the quantity of overrun light after stopping of the emission based on the target quantity of emission, and performs correction to advance emission stop timing in accordance with the quantity of overrun light. Here, the rate between the target quantity of emission and the quantity of full emission by the emission means (the rate of emission) is preferably obtained so that the quantity of overrun light after stopping of the emission is predicted based on the rate of emission. In split emission, the emission stop timing is preferably corrected on each chopper emission.

Abstract: A photographing system in which a camera and a flash device cooperate to perform flash photographing and a photographic information transmission system in which a second hand-held terminal such as a flash device is controlled based on a signal relating to photographing that is transmitted from a first hand-held terminal such as a camera to the second hand-held terminal. A unique identification code for identification of the first handheld terminal or the second hand-held terminal is provided in at least one of the first hand-held terminal and the second hand-held terminal. The second hand-held terminal has a collating program for collating a unique identification code that is transmitted from the first hand-held terminal by using radio waves as a medium with a unique identification code provided in the second hand-held terminal.

Abstract: A circuit that digitizes a quantity of light received from a strobe according to the present invention, includes: a photoelectric conversion device that receives light from the strobe and generates an output corresponding to an intensity of the received light; a storage device that stores the output generated by the photoelectric conversion device; a constant quantity discharge device that holds a storage quantity at the storage device close to a specific value by discharging a constant storage quantity from the storage device over a specific period which is in synchronization with a specific sampling frequency and is shorter than the sampling cycle when the storage quantity at the storage device exceeds a predetermined threshold value and by implementing feedback control on the storage quantity at the storage device; and a received light quantity output device that outputs one or more pulse signals when the storage quantity at the storage device exceeds the predetermined threshold value.

Abstract: The present invention relates to an electronic flash device capable of dimming control, particularly with the objective of enhancing the dimming precision in weak light emissions. The electronic flash device of the present invention thus predicts the quantity of overrun light after stopping of the emission based on the target quantity of emission, and performs correction to advance emission stop timing in accordance with the quantity of overrun light. Here, the rate between the target quantity of emission and the quantity of full emission by the emission means (the rate of emission) is preferably obtained so that the quantity of overrun light after stopping of the emission is predicted based on the rate of emission. In split emission, the emission stop timing is preferably corrected on each chopper emission.

Abstract: An automatic focus adjustment apparatus more ideally accomplishes a tracking servo process, which drives a shooting lens so that a focusing state is maintained by predicting movements of an image plane of a moving object. A lens driving system 6 determines the moving speed of an image plane of an object or a movement prediction curve by regression-calculating from a plurality of defocus amounts previously calculated, a calculator, the accumulation time of a focusing state detector, and a lens position obtained from a lens movement amount detector, to drive a lens by assuming a future position of the image plane based on a result of the calculation.

Abstract: A diaphragm control device for a camera comprises a diaphragm driving mechanism that drives the diaphragm, a diaphragm position detection device which calculates the opening diameter of the diaphragm from the standard opening diameter and transmits the opening diameter as a pulse, a diaphragm connection mechanism that fixes the opening diameter of the diaphragm, a recording device that records information concerning a change in the generation cycle, which has been measured in advance, and a control that controls the driving of the diaphragm driving mechanism and of the diaphragm connection mechanism, based on the output of the diaphragm position detection device. The control determines the change in the generation cycle from the total number of pulses generated up until the generation of the current pulse by referring to information in the recording device, and determines the time that indicates the connecting action in the diaphragm connection mechanism.

Abstract: An image sensor includes an element array consisting of a plurality of charge-coupled elements, a charge transfer unit for transferring a charge stored in the element array along a transfer path, a branch transfer unit, having a plurality of branch transfer paths, for selectively outputting on one branch transfer path at least part of the charge transferred through the transfer path of the charge transfer unit, and a plurality of amplifying units, arranged at output stages of the plurality of branch transfer paths of the branch transfer unit, for amplifying the transferred charge with different gains and outputting the amplified charges.