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| Number | Title | Issue Date |
| 7046294 | Electronic still camera with printer An electronic still camera has a camera section for photographing a subject as an electronic image through an image sensor and recording it as digital image data in a memory, and a printer section for printing the electronic image on an instant photo film sheet base... | 05/16/2006 |
| 5604529 | Three-dimensional vision camera To provide a three-dimensional vision camera where no disagreement is caused between two-dimensional image information and distance information, the three-dimensional vision camera is provided with a memory (11), a neural network (12) and a three-dimensio... | 02/18/1997 |
| 4941011 | Single integrator system with dual photocells An exposure control circuit for a photographic apparatus that senses visible and infrared scene light with separate light sensing photodiodes employs a single integrator and a separate capacitor for the storage of each scene light integration to sequentia... | 07/10/1990 |
| 4705382 | Flash photographing apparatus A flash photographing apparatus, including a camera and an electronic flash device, comprises a plurality of photoelectric elements for measuring brightness of a main and sub objects to be photographed. A diaphragm aperture value and shutter speed value o... | 11/10/1987 |
| 4435057 | Exposure control device for cameras A camera capable of AE-lock photography wherein an output of a light measuring circuit is stored in response to a manual operation at an arbitrary time prior to a shutter release operation, and exposure is controlled in accordance with the stored output. ... | 03/06/1984 |
| 4349261 | Electromagnetic release device for single lens reflex camera An electromagnetic release device for a single lens reflex camera in which the force urging a release lever into abutment with a locking lever is released upon completion of a photographing operation. A rotatably mounted release lever is coupled through a... | 09/14/1982 |
| 4343541 | Reflection photometric apparatus for camera including focal plane shutter A reflection photometric apparatus for camera including focal plane shutter includes a photoelectric transducer element which determines reflected light from a first blind surface of a shutter and a film surface. A sample-and-hold circuit maintains an int... | 08/10/1982 |
| 4295720 | Apparatus for determining light reflection from a focal plane shutter An apparatus for determining the amount of light reflected from a focal plane shutter includes a photoelectric transducer element which determines light reflection from the shutter blind surface and the film surface. The transducer element produces a phot... | 10/20/1981 |
| 4264164 | Memory holding device in a single lens reflex camera In a single lens reflex camera having a movable mirror, a metering circuit, a circuit for operating a proper exposure value in accordance with the metering output of the metering circuit, a circuit for storing the output of the operation circuit, display ... | 04/28/1981 |
| 4258992 | Automatic control device for a camera having an electromagnetic release device An automatic exposure control device for a camera in which manual operation such as depression of a shutter button, causes memorization of an electric quantity in an analog memory element in accordance with a photoelectric output from a photometering circ... | 03/31/1981 |
| 4226516 | Camera and viewfinder display device therefor In the enclosed camera, the progress of a long time exposure is indicated by integrating a voltage over the exposure time and displaying the integrated voltage with an ammeter needle or a row of sequentially illuminated LEDs. According to an embodiment of... | 10/07/1980 |
| 4209244 | Light responsive camera actuation control In camera control circuitry including an exposure control circuit for controlling exposure factor or exposure factors, e.g. exposure time and/or diaphragm aperture, in accordance with an output of a light measuring circuit and further including an electro... | 06/24/1980 |
| 4182557 | Single lens reflex camera capable of high speed continuous photography A single lens reflex camera capable of the high speed continuous photographing. It achieves high speed continuous photography by means of an automatic winding up device, designed so that, in order to shorten the photographing time, the mirror and the diap... | 01/08/1980 |
| 4170411 | Control circuit for a memory type electric shutter In the system disclosed, a feedback circuit connects the output of the last of a plurality of cascaded amplifier stages to the input of the first stage. A photoelectric transducer is connected to one of the stages. The feedback connection compresses the o... | 10/09/1979 |
| 4161355 | Photographic camera control circuitry In a photographic camera control circuitry which energizes an electromagnetic means for initiating a camera operation or an exposure sequence, measures brightness of the scene to be photographed and controls exposure time automatically in accordance with ... | 07/17/1979 |
| 4131350 | Exposure control device for camera The present invention relates to an exposure control device for a camera for obtaining a proper exposure taking the differences of the films to be used into consideration, so designed that an exposure amount control circuit for controlling an exposure amo... | 12/26/1978 |
| 4122467 | Camera with the shutter time control circuit for the flash light photography The present invention relates to a shutter time control circuit of the type in which the shutter time is changed over into a predetermined value for flash light photography in response to a flash charge completion signal from the flash light device. In or... | 10/24/1978 |
| 4099188 | Automatic exposure control device for single lens reflex camera An automatic exposure control device for a single lens reflex camera characterized in that a stop determining member which stops down diaphragm blades by rotation thereof at a predetermined speed is released by a shutter release plate. A time constant cir... | 07/04/1978 |
| 4074291 | Single lens reflex camera with automatic exposure control mechanism A single lens reflex camera in which the diaphragm aperture is stopped-down to a preset position before measuring the image light for use in the automatic exposure control mechanism of the camera. A mirror, which is provided in the camera along its optica... | 02/14/1978 |
| 4070682 | Exposure time control circuit An exposure time control circuit for a camera includes a level selecting circuit between a light measuring circuit and a memory circuit to have a selected output memorized in the memory circuit. The level selecting circuit is provided with two inputs, one... | 01/24/1978 |
| 4069489 | Automatic exposure control devices using bi-directional transistors In an exposure control device, a bi-directional bi-polar transistor is connected between a light measuring circuit and a storage capacitor for connecting and disconnecting the storage capacitor from the light measuring circuit. A biasing circuit provides ... | 01/17/1978 |
| 4059835 | Bypass circuits for improving the response of electric shutters An electric shutter circuit employs a photodiode which forms the collector load of a logarithmic amplifier. The photodiode is shunted with an active device which is caused to conduct during shutter operation to supply an additional current to the logarith... | 11/22/1977 |
| 4041506 | Timing circuits for camera shutters A memory capacitor in an electric shutter circuit has one terminal coupled to a voltage responsive element such as a diode, which operates to effectively reduce the level to which the capacitor is charged to thereby attain a decrease in discharge time of ... | 08/09/1977 |
| 4024553 | Electrical focal plane shutter with mechanical control mechanism operative upon electromagnetic failure An electrical focal plane shutter is provided of a type in which subsequent to a running of a first blind of the shutter, a second blind of the shutter is constrained from movement by an electromagnet until a desired exposure period passes, whereupon the ... | 05/17/1977 |
| 4015276 | Electric shutter operating circuits for use in photographic cameras In an electric shutter operating circuit for use in a photographic camera of the class wherein the operation of the shutter is controlled in accordance with the brightness of an object, and information regarding the iris opening and the photosensitivity o... | 03/29/1977 |
| 4007466 | Electrical system having a photoelectric converter to be used in photography An electrical system to be used for photographic purposes. The electrical system has an input circuit for providing a given input signal as well as an output circuit for utilizing the latter signal and an intermediate circuit electrically connected betwee... | 02/08/1977 |
| 3977011 | Light measuring apparatus An automatic exposure control system for regulating one or more variable photographic parameters. The light level of a scene is evaluated using a photosensitive voltage source. A differential amplifier with a non-linear negative feedback is provided to al... | 08/24/1976 |
| 3974509 | Automatic exposure control circuit for a camera An automatic exposure control circuit for a camera or the like includes a memory circuit comprising a series connection of a capacitor and an impedance element connected to an input of a high input impedance circuit to enable the measurement of the amount... | 08/10/1976 |
| 3971045 | Light measuring circuit Light responsive circuit of low current consumption and low cost and used for camera exposure control and/or exposure indication. The circuit includes a field effect transistor, a photodiode connected between gate and source of the field effect transistor... | 07/20/1976 |
| 3971047 | Single lens reflex camera having an electric shutter In a single lens reflex camera, a lever responsive to operation of a shutter button initiates timing of an electronic shutter control a predetermined time interval before the shutter is actually opened. The predetermined time interval corresponds to the t... | 07/20/1976 |
| 3961341 | Automatic shutter speed control means for a camera An automatic exposure control circuit which controls the shutter speed in accordance with the output of a light measuring circuit including a photodetector which detects the level of scene brightness. The output of the photodetector is memorized by a memo... | 06/01/1976 |
| 3952318 | Shutter control circuit for cameras An electrical system to be used in a camera for controlling exposure time. The electrical system includes a pair of substantially identical constant voltage sources respectively having inputs connected together. A buffer circuit is coupled between an inte... | 04/20/1976 |
| 3936842 | Automatic exposure time control circuitry for a camera using a photodiode as a light measuring element A light measuring circuit for an exposure time control device uses a photodiode to measure the object brightness and a logarithmic compressing diode to provide negative feedback between the output terminal and one input terminal of a differential amplifyi... | 02/03/1976 |
| 3931628 | Exposure time control device for an electric shutter in a single reflex camera with through the lens measuring system A control device for controlling the exposure time automatically for an electric shutter, in a single reflex camera of the so-called "through the lens" photometric type which determines the brightness of an object by means of the light past through the pr... | 01/06/1976 |
