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| Number | Title | Issue Date |
| 7289155 | Automatic exposure control apparatus and method An automatic exposure (“AE”), control apparatus to prevent exposure errors resulting from “smear.” Image-capturing is performed at a single exposure time TI (I=1, 2, . . . n); a CCD output is applied with a CCD drive signal to perform an integrating operatio... | 10/30/2007 |
| 7167204 | Automatic exposure control apparatus and method An automatic exposure (“AE”), control apparatus to prevent exposure errors resulting from “smear.” Image-capturing is performed at a single exposure time TI (I=1, 2, . . . n); a CCD output is applied with a CCD drive signal to perform an integrating operatio... | 01/23/2007 |
| 6404457 | Device and method for controlling movie camera shutter speed A movie camera provided with a shutter speed control system, which can control shutter speed appropriately under a low brightness in a manual speed mode. The shutter speed control system is limited to a usable range of shutter speed in response to the lev... | 06/11/2002 |
| 5875363 | Camera shutter A camera shutter is capable of switching between a spring-drive mode and a motor-drive mode through a single electromagnet without performing an exposure operation. A control circuit controls a stepping motor for rotating a driving ring and the electromag... | 02/23/1999 |
| 5862420 | Control device for a camera shutter and a control method therefor A control device for a camera shutter comprises a diaphragm value setting device for setting a predetermined diaphragm value of the shutter, an exposure value setting device for setting an exposure value of the shutter, a storing device for storing an ope... | 01/19/1999 |
| 5826119 | Shutter-priority automatic exposure camera A camera operable in shutter-priority automatic exposure mode comprises a photometric circuit, an exposure data memory circuit for storing information on a plurality of selectable diaphragm openings, and a control circuit for calculating a desirable diaph... | 10/20/1998 |
| 5602616 | Exposure control apparatus of camera A camera having a manually actuable switch for temporarily shifting the camera to an optimum exposure value so that exposure factors, based upon a manually set shutter speed and a manually set aperture value, are replaced by optimum exposure factors based... | 02/11/1997 |
| 5548371 | Exposure control device An exposure control device which permits exposure control either in an automatic mode or in a manual mode is arranged to smoothly perform the exposure control by holding exposure control information obtained immediately before change-over of the exposure ... | 08/20/1996 |
| 5485242 | Exposure control apparatus of camera An exposure control apparatus of a camera having a photometer for detecting a brightness of an object to be taken, an exposure value calculator for calculating an optimum exposure value in accordance with the object brightness, and an exposure factor sett... | 01/16/1996 |
| 5381207 | Optical apparatus responsive to an external information output device A camera controls its operation according to the data contents of a signal transmitted from an external information output device. The camera includes a detector for detecting the signal transmitted from the information output device, a switch for switchi... | 01/10/1995 |
| 5291237 | Flash synchronizing device A camera has a shutter which may also constitute a diaphragm. In a multi-flash mode the shutter selectively has a maximum aperture at an onset or at the end of the time base. The flash occurs in synchronism with a shutter waveform shaped by this aperture ... | 03/01/1994 |
| 5089841 | Device for automatically changing magnification of camera zoom lens A camera automatic zoom lens adjustment apparatus in which photography can be performed in one of three modes including a standard mode, creative mode, and active mode. For the creative mode, aperture values of the camera are set at values greater than th... | 02/18/1992 |
| 5049916 | Automatic optimization of photographic exposure parameters through determination and utilization of extra system speed Exposure control apparatus and methods for use in a photographic camera to improve the overall quality of photographed images over that obtainable by adherence to ISO/ANSI exposure standards. The quality improvement is attained through automatic selection... | 09/17/1991 |
| 4978990 | Exposure control apparatus for camera An optical image of an object is incident on a light-receiving unit of a two-dimensional matrix through a photographing lens. An output from the light-receiving unit is input to a first arithmetic logic unit to calculate an actual object brightness value ... | 12/18/1990 |
| 4978981 | Exposure control device An exposure control device of a camera by which an appropriate camera-shake limit shutter speed Tvf can be obtained in accordance with a focal length f of a photographing lens, and by which an arbitrary program can be set on the basis of the sh... | 12/18/1990 |
| 4974011 | Camera system A camera system including interchangeable lenses each having a switch to control many functions provided to the camera system. By simply operating one lens switch, the working mode of auto-focusing (AF) functions of the camera system can be changed: singl... | 11/27/1990 |
| 4959680 | Camera system A camera system of the type having a lens shutter, a focal-plane shutter, an aperture defined by the lens shutter, and a camera lens, includes a selector circuit which sets an operation mode to either a lens shutter mode in which the lens shutter is opera... | 09/25/1990 |
| 4952967 | Timer-assisted photographing mode control device for camera A timer-assisted photographing mode control device for use in a camera of the type which has a timer circuit capable of delivering, at a predetermined time interval, signals relating to starting of a shutter releasing operation. When timer-assisted photog... | 08/28/1990 |
| 4945380 | Program exposure calculating apparatus A program exposure calculating apparatus compares exposure value a reference exposure value provided based on a restricting exposure time and a full open aperture value, and when the exposure value is smaller than the reference exposure value, the apparat... | 07/31/1990 |
| 4629305 | Automatic exposure camera An automatic exposure camera in which any one of four modes, specifically, an aperture-priority automatic exposure mode, a shutter-speed-priority automatic exposure mode, a programmed automatic exposure mode and a manual exposure mode, can be readily set ... | 12/16/1986 |
| 4560267 | Camera system operable by carrying data from a camera accessory to a camera body A camera system operable with data carried from a camera accessory to a camera body. The camera accessory has a ROM for storing various data at a plurality of addresses, respectively, each of which data consists of a plurality of bits, and a coupling term... | 12/24/1985 |
| 4545665 | Focus detecting device A focus detecting device for a camera adjusts its accuracy according to a selected one of available photographic modes, such as a panning mode using a shutter preference arrangement, a snap-shot mode using a normal combination of shutter time and an apert... | 10/08/1985 |
| 4512647 | Automatic diaphragm control and mirror release devices for cameras In a camera automatic diaphragm control device of the type wherein scene light is measured through the diaphragm aperture during the stopping-down operation thereof, which is arrested when the measured light value reaches a given level with respect to man... | 04/23/1985 |
| 4480903 | Camera capable of switching between manual exposure control and shutter priority automatic exposure control The disclosed camera includes a viewfinder which displays a display member representing a preset aperture value in its view field, and is capable of operating in open aperture and stopped down aperture manual exposure modes as well as a shutter priority a... | 11/06/1984 |
| 4448506 | Exposure control device of a camera An exposure control device of a camera comprises first metering means for effecting metering while dividing an object into a plurality of metering areas and for generating a first metering output determining the exposure of the entire object on the basis ... | 05/15/1984 |
| 4426142 | Camera employing a flash illumination device and a flash photographing system A flash illumination device is removably mounted on the body of an accompanying camera. Electric adjusting means set the diaphragm of the camera. A signal system produces a signal corresponding to a prescribed diaphragm setting and transfers the signal th... | 01/17/1984 |
| 4423937 | TTL Light measuring system In the disclosed light measuring system, light coming from a photographic lens is measured through a momentarily closed diaphragm and memorized to control the diaphragm during a subsequent exposure.... | 01/03/1984 |
| 4383749 | Automatic exposure control system The disclosed control system controls the diaphragm aperture of a camera in accordance with a preselected shutter time. A diaphragm scanner produces one pulse for each change of one stop in the size of aperture opening. When the required value of the diap... | 05/17/1983 |
| 4367932 | Exposure control system An exposure control system includes a device for measuring an intensity of the ambient light, three controllers for controlling three factors of exposure time, aperture size and amount of flash light to be emitted, and a device for setting three pieces of... | 01/11/1983 |
| 4339186 | Automatic diaphragm control and mirror release devices for cameras In a camera automatic diaphragm control device of the type wherein scene light is measured through the diaphragm aperture during the stopping-down operation thereof, which is arrested when the measured light value reaches a given level with respect to man... | 07/13/1982 |
| 4320948 | Motion detecting device in exposure control system for optical instrument The present invention relates to a motion detecting device for detecting the relative motion rate or velocity between an object and an optical instrument in an exposure control system by which the exposure time, i.e. the shutter speed of the instrument is... | 03/23/1982 |
| 4277155 | Control device for photographic cameras A control device independent of and designed for use with professional cameras for operating an electromagnetically drivable shutter or magnetic shutter and for determining and setting exposure values, wherein the device includes a power source and means ... | 07/07/1981 |
| 4269497 | Lens barrel for both priorities or shutter speed priority mode automatic exposure system This invention relates particularly to a phototaking lens having at least a shutter speed priority automatic exposure system. The lens has a mount engageable with a mount of a camera body, which has a signal member operable when the lens is mounted and co... | 05/26/1981 |
| 4268136 | Camera having an automatic exposure control means A camera in which the automatic exposure control is conducted on the basis of measured light information obtained in accordance with the illumination of an object to be photographed. In the camera, a type of exposure control information that is predetermi... | 05/19/1981 |
| 4221476 | Exposure adjusting device for camera In the camera disclosed, a light measuring device and input data setting device establish exposure control signals which regulate exposure elements. When the control signal is out of range of an element, a switch turns on an adjusting arrangement which re... | 09/09/1980 |
| 4179201 | Lens stop braking in automatic exposure cameras of stop value control type An automatic exposure camera of the stop value control type is provided with lens stop braking to improve the accuracy of the lens stopping operation while at the same time maintaining a high operating speed. A brake magnet mechanism is provided for decel... | 12/18/1979 |
| 4176936 | Motor drive unit for a camera A motor drive unit adapted for use with a camera having a motorized shutter speed adjusting device. When a continuous series of frame exposures are to be made at a predetermined frame frequency, the set value of shutter time in the camera is made to be co... | 12/04/1979 |
| 4149785 | Diaphragm-type exposure control system having braking arrangement An exposure control operation involving diaphragm adjustment is performed in first and second phases. During the first phase, a drag mechanism controls the rate of change of diaphragm value. During the second phase, a braking mechanism cooperates with the... | 04/17/1979 |
| 4141633 | Exposure control device An automatic exposure control circuit for a camera is disclosed. The circuit is capable of automatically controlling the shutter speed when the diaphragm is manually set, and is capable of automatically controlling the diaphragm opening when the shutter s... | 02/27/1979 |
| 4137541 | Automatic exposure control apparatus for a single lens reflex camera An automatic exposure control apparatus for controlling the diaphragm of the camera in accordance with the preselected shutter time and the exposure value, in which a digital-to-analog converter having a counter responsive to the number of pulses supplied... | 01/30/1979 |
