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| Number | Title | Issue Date |
| 7366922 | Power control for gaming machine When an alternating-current power is supplied to an ATX power supply, sub power is supplied to a PC board from the ATX power supply. When the sub power is supplied to the PC board, a PWOK signal is output to the ATX power supply by processing performed by a CPU acco... | 04/29/2008 |
| 5276476 | Automatic focusing device An automatic focusing device, in which a focus lens is driven for tracking an object-in-motion to obtain an in-focus state, based upon a focus prediction that is executed from repeated distance measurements. Tracking is continued even if the position of t... | 01/04/1994 |
| 5181064 | Camera shutter A camera shutter system has a motor driven sector for opening and closing a shutter opening. A photo-interruptor is positioned to intercept a light beam, to effect the sequential generation of first and second photo-interruptor signal pulses, the first pu... | 01/19/1993 |
| 5155521 | Counter-driven shutter actuator control circuit A multipurpose interface circuit through which the control current for operating an electromagnetically driven shutter actuator for applications such as a still camera may be precisely defined throughout a shutter actuation sequence (open, hold and close)... | 10/13/1992 |
| 5010359 | Method and apparatus for photometry from plural points of automatic exposure camera A method and apparatus for effecting photometry from plural points of an automatic exposure camera includes the provision of photometric means which determines the brightness of a relatively limited region of an image field. Photometry is successively mad... | 04/23/1991 |
| 4864347 | Program shutter A program shutter has a plurality of shutter sectors driven in opening and closing directions by a reversible stepping motor to define a lens aperture during an exposure operation. An arithmetic circuit calculates an exposure amount corresponding to the b... | 09/05/1989 |
| 4843419 | Light quantity measuring system A light quantity measuring system with a function of controlling an exposure comprises a capacitor an anode potential of which drops from a predetermined level to a set-up reference level with a rate of change responding to a quantity of light incident on... | 06/27/1989 |
| 4802194 | Time measuring system with large dynamic range A time interval measuring system includes circuitry for generating a signal indicating the beginning and end of a time interval, a clock to generate a periodically increasing clock signal, and a counter to count the clock signal between the beginning and ... | 01/31/1989 |
| 4743935 | Camera shutter control device In a shutter speed control device for a camera, a shutter speed is changed by varying a period of time from a reference time instant to a time of shutter opening. A first signal is produced which is representative of a duration from the reference time ins... | 05/10/1988 |
| 4710014 | Control circuit for a programming shutter A control circuit for a programming shutter includes a light receiving element which is always exposed to light from a subject to be photographed and a logarithmic compression device which logarithmically compresses a photocurrent flowing through the ligh... | 12/01/1987 |
| 4697908 | Program shutter A program shutter has a shutter mechanism comprised of at least one sector movable in opening and closing directions in response to forward and reverse rotation of a step motor to form a lens aperture. A control unit automatically controls the shutter ope... | 10/06/1987 |
| 4696560 | Camera shutter In a program shutter having a sector which is opened and closed by a step motor, there is provided a home position detection means for detecting whether or not the sector is positioned in a home position. Before and after an exposure operation, it is dete... | 09/29/1987 |
| 4693583 | Programmable shutter A programmable shutter of the type wherein a shutter blade is opened and closed by means of a stepping motor. The motor is rotated in a forward direction by drive pulses of a predetermined fixed period to gradually open a sector while at the same time a l... | 09/15/1987 |
| 4648701 | Control circuit for program shutter In a program shutter including a forwardly/reversely rotatable step motor for opening and closing a shutter blade to effect automatic exposure, a drive pulse number and an interpolation quantity are set in first and second counters. A step drive pulse is ... | 03/10/1987 |
| 4619512 | AD conversion device for camera The disclosed AD conversion device has an AD conversion circuit for AD converting information corresponding to object brightness and other photographic information in a double integrating system. The integrating time for AD converting the photographic inf... | 10/28/1986 |
| 4563069 | Control system for carrying out focus detection and light measurement of a camera Disclosed is a control system for carrying out the focus detection and the light measurement of a camera by means of which after the termination of the exposure the next focus detection and the next light measurement are controlled systematically so as to... | 01/07/1986 |
| 4540266 | Camera in which exposure is electrically and mechanically controllable A camera in which exposure is controlled by the supply of power from a power source includes a first control device for electrically controlling the time of the exposure, a second control device for mechanically controlling the time of the exposure, a mem... | 09/10/1985 |
| 4509843 | Apparatus for controlling a micro-processor unit in a camera Apparatus for controlling a micro-processor unit in which a set signal is supplied to a micro-processor unit to change its state from a first state to a second state in response to a shutter releasing operation. The voltage of a power source is detected b... | 04/09/1985 |
| 4505568 | Shutter mechanism for camera A shutter mechanism for a camera comprises at least one shutter blade, an electromagnet for holding the shutter blade in a blocking position where an exposure aperture is concealed and another electromagnet for returning the shutter blade to the initial a... | 03/19/1985 |
| 4479707 | Exposure time reproducing device In the disclosed exposure time reproducing device, a digitally suppressed exposure time datum is expanded by shifting the decimal part of the datum according to the contents of its integral part. The expanded datum thus obtained is read out by means of pu... | 10/30/1984 |
| 4475802 | Apparatus for determining shutter speed adapted for a photographing apparatus in a microscope A shutter speed determining apparatus adapted for a photographing apparatus in a microscope includes a photo multiplier as photoelectric element. The photo multiplier receives light transmitted through an objective lens and transforms the light into an el... | 10/09/1984 |
| 4462673 | Shutter time control circuit The disclosed shutter control circuit presents a shutter time as an analog value and converts the same into a digital value by an A/D converter, then nullifies information below a prescribed step of shutter time out of thus digitally converted value for e... | 07/31/1984 |
| 4422747 | Exposure time control device for camera In the exposure time control device disclosed, a first timer sets a first time interval equal to a desired exposure time but establishes an exposure time in the shutter different from the desired exposure time. A second timing arrangement forms a compensa... | 12/27/1983 |
| 4420237 | Exposure control system A camera having an electromagnetically driven shutter provided with a counter capable upon counting a present number producing a signal. Each time the shutter is closed, the counted value is changed, while the period of actuation of the shutter is control... | 12/13/1983 |
| 4401373 | Exposure control arrangement for photographic cameras An exposure control arrangement for use in photographic cameras employing digital circuitry and a microprocessor for practical and rational exposure control of the photographic camera through simple construction at high reliability. The arrangement utiliz... | 08/30/1983 |
| 4398813 | Photographic camera A photographic camera with automatic setting of diaphragm and exposure time. A light sensitive circuit generates pulses and is connected to a diaphragm counting stage for comparing signals from the light sensitive circuit with preset signals in the diaphr... | 08/16/1983 |
| 4395098 | Shutter time control circuit The present invention relates to a shutter time control circuit for a camera having a focal plane shutter and a timer circuit for counting the shutter time in a digital way. In accordance with the present invention a preset means for presetting the amount... | 07/26/1983 |
| 4384773 | Digital light-to-frequency converter with preset voltage A digital scene light detecting and integrating circuit is provided with an automatic preset by which the integrating circuit is presignaled to ramp upward to a preselected reference voltage value at which digital pulse counting can immediately begin, the... | 05/24/1983 |
| 4375321 | Exposure amount control device An exposure control device for use with a set of shutter blades which form a principal opening through which an exposure is made, includes a member which forms an auxiliary opening of a predetermined aperture before the shutter release starts. Upon releas... | 03/01/1983 |
| 4370037 | Digital control camera A camera having an exposure control device or, more particularly, having a digital control circuit for controlling exposure. Sequence control over a photographing operation and control over a display operation are both accomplished by the same sequence co... | 01/25/1983 |
| 4364647 | Control device for a camera The present invention relates to a control device for camera, so designed as to sequentially control the photographing period, the release time and the release frequency in an automatic way and to print the data information on the film. The eventual abrup... | 12/21/1982 |
| 4349263 | Exposure time control device for camera In the exposure time control device disclosed, a first timer sets a first time interval equal to a desired exposure time but establishes an exposure time in the shutter different from the desired exposure time. A second timing arrangement forms a compensa... | 09/14/1982 |
| 4345826 | Shutter speed setting and display apparatus A shutter speed setting and display apparatus for use with a single-lens reflex camera comprises a shutter speed variation apparatus, a shutter speed setting apparatus and a shutter speed display apparatus. The shutter speed variation apparatus produces c... | 08/24/1982 |
| 4342505 | Automatic exposure control device for a single lens reflex camera In an automatic exposure control device of digital information type for a single lens reflex camera, a sampling circuit for dividing pulses generated from an oscillator and a shutter release signal generating circuit are connected with a gate means having... | 08/03/1982 |
| 4306784 | Photographic camera with an operation mode display device A camera having an electrically operated self-timer is provided with an operation mode display device arranged so that when the camera is switched to an exposure control mode by the self-timer, the display being ready for actuation of the timer is rendere... | 12/22/1981 |
| 4303317 | Circuit layout to measure exposure times and/or to control the time of exposure for a photographic camera Apparatus for measurement of the exposure time and/or for controlling the time for exposure of a photographic camera having a measuring unit generating an exposure time signal in response to object brightness. The apparatus comprises an oscillator, a freq... | 12/01/1981 |
| 4297013 | Coordinating control system for camera A digital system for controlling coordination of the various portions of the camera to operate in selected modes including the automatic and bulb modes is provided with signal forming means comprising a count start switch and a bulb control switch connect... | 10/27/1981 |
| 4293208 | Prebias for digital light integrator In an exposure control system in which the instant in which the scene light is first admitted to a film plane from a shutter blade mechanism at the commencement of an exposure interval must be precisely and accurately determined for subsequently controlli... | 10/06/1981 |
| 4284333 | Exposure control device for camera An exposure control device for a camera having a first counter which performs analog-to-digital conversion for a photometric purpose and a second counter for sequence control of each part of the camera. For use of a self-timer, the first and second counte... | 08/18/1981 |
| 4265521 | Digital control camera A camera having an exposure control device or, more particularly, having a digital control circuit for controlling exposure. Sequence control over a photographing operation and control over a display operation are both accomplished by the same sequence co... | 05/05/1981 |
