Class 396/99 - With amplification control

Subclass of Class 396 - Photography
Definition: Subject matter wherein the means for focusing the exposure
No. of patents: 34
Last issue date: 04/08/2008

Number	Title	Issue Date
7355647	Image pickup apparatus An image pickup apparatus including a first photoelectric conversion circuit that has a photoelectric conversion area and is used for performing focus adjustment; a second photoelectric conversion circuit that has a photoelectric conversion area and is used for perf...	04/08/2008
7352403	Method for adjusting relative position of lens module by using uniform light source A method for adjusting relative position of a lens module by using a uniform light source is provided. The lens module includes a bottom board, an image sensor, an adjusting module and a lens apparatus. The image sensor is disposed on the bottom board and perpendicu...	04/01/2008
7221400	Sensor device for automatic exposure and automatic focus An image pickup apparatus including a first photoelectric conversion circuit that has a photoelectric conversion area and is used for performing focus adjustment; a second photoelectric conversion circuit that has a photoelectric conversion area and is used for perf...	05/22/2007
7154589	Rangefinder apparatus In a rangefinder, if sensor data initially received by a sensor data storage part from an A/D converter includes data with low contrast, the sensor data storage part receives the sensor data at least one additional time, adds additionally received sensor data to the...	12/26/2006
7042503	Image sensing apparatus, method and program for distance measurement An image sensing apparatus of this invention includes a signal generator adapted to generate a signal upon reception of input light, a transfer unit adapted to transfer the signal generated by the signal generator, a temperature measuring unit adapted to measure a t...	05/09/2006
7020391	Sensor device A camera is disclosed which is provided with a sensor device that includes: a substrate having formed thereon which first and second line sensors that are arranged a fixed baseline length apart from each other and a third sensor for receiving light from a field whic...	03/28/2006
6928240	Camera A camera includes a light emitter, a light detector, a clamp circuit, a calculator for outputting an output ratio signal, a converter for converting the output ratio signal into a distance signal corresponding to the distance or a predetermined fixed value, a light ...	08/09/2005
6922526	Focus detection device A focus detection device includes line sensors which each photoelectrically convert and integrate light from an object so as to output the received light as an image signal; monitor sensors provided adjacent to the line sensors; a control device which controls an in...	07/26/2005
6871018	Focus detection device A focus detection device includes line sensors which photoelectrically convert and integrate light from an object and output an image signal; monitor sensors, provided adjacent to the line sensors, which monitor an integrated value of the adjacent line sensors; a co...	03/22/2005
6711350	Distance measuring apparatus The sensor sensitivity and the method of setting the peak selected area of the AF sensor are changed according to the luminance level of the distance measurement object. The distance measuring apparatus uses a passive AF sensor to determine the distance of a distanc...	03/23/2004
6549874	Distance measuring device A distance measuring device is provided with regulating circuit for removing offset voltages. Before conducting distance measurement, the regulating circuit outputs a reference voltage on the basis of offset voltages of an amplifier and an integrating cir...	04/15/2003
5974271	Focus detector A focus detector amplifies a plurality of sets of output signals from a plurality of photoelectric transfer element arrays by the most preferable amplifying mode and focuses a focus of an optical lens system on a desired object among a plurality of object...	10/26/1999
5923213	Digitally gain-controlled amplifying device, and camera using such a device An amplifying device has a decibel gain that evolves quasi-linearly as a function of the digital value of a control word C(O:M-1). The device includes: an amplifying stage with K amplifiers having mutually different decibel gains, the gain in decibels of ...	07/13/1999
5917380	Digitally gain-controlled amplifier, and camera using such an amplifier The invention relates to a digitally gain-controlled amplifier including a transconductance stage provided with means for producing, at each of its N current outputs, a current (Itr) having a variable component which is representative of the analog input ...	06/29/1999
5742524	Distance measuring device In order to improve the accuracy and reliability of a distance measurement device of the light-projecting type, the device is provided with a reference voltage generator for generating a reference voltage having a level dependent upon whether or not a lig...	04/21/1998
5572280	Photoelectric conversion apparatus and camera using the same in focus detection thereof A photoelectric conversion unit includes a plurality of photoelectric conversion devices for receiving light from an object and storing charge corresponding to the quantity of the received light. A monitor unit outputs a monitor signal corresponding to th...	11/05/1996
5568222	Focus detecting apparatus detecting focus to a plurality of areas A focus detecting apparatus detecting focus to a plurality of areas receives outputs from a plurality of sensors. A processing circuit evaluates the plurality of output signals from the respective plurality of sensors, and independently evaluates whether ...	10/22/1996
5444511	Distance measuring device for camera A distance measuring device may be constructed utilizing a reduced number of components by calculating distance on the basis of the duration of an integration. Pulsed light is projected toward an object. A selecting circuit selectively outputs one of a pa...	08/22/1995
5302997	Composite photometric and range finding element array A multiple photosensitive element array and lens system particularly adapted for use in a camera for providing scene image light intensity signals for use in automatic exposure and automatic focus control. A two-dimensional photometric sensor array of pla...	04/12/1994
5218395	Camera with a multi-zone focus detecting device A camera with a multi-zone focus detecting device has an objective lens mounted on a camera. An image formed by the objective lens is divided into a plurality of zones. In each zone, a focusing condition is detected based on the image formed by the object...	06/08/1993
5126777	Automatic focusing apparatus in which sensor signals are amplified with different gains depending on the photographing mode An automatic focusing apparatus for a camera for performing focus detection on the basis of image signals accumulated by an accumulation type sensor unit. At the time of image signal reading, the sensor signals are amplified with different gains in a cont...	06/30/1992
4786933	Focus detection apparatus for camera A focus detection system detects an in-focus position of a photographing lens on the basis of a phase difference between image signals produced from two focusing portions of an image sensor for focusing an object image, the image sensor being scanned at l...	11/22/1988
4782356	Automatic focusing apparatus An automatic focusing apparatus configured such that a projected light from a light emitting element is reflected on an object and the reflection light is passed through a flat plate so as to be received by a light receiving element. The position where th...	11/01/1988
4763154	Focus detecting device and image signal amplifier circuit therefor An image signal amplifier circuit includes an amplifier for amplifying an image signal from a focusdetecting self-scanned image sensor, and a monitor photodetector for detecting the brightness of an object to be photographed. The amplification degree of t...	08/09/1988
4760419	Distance measuring apparatus A distance measuring apparatus which emits light toward an object, receiving light reflected by the object, and measuring the distance of the object. This apparatus includes receiving means for receiving the reflected light, and the receiving means has at...	07/26/1988
4660955	Focus condition detecting device for use in a camera A focus detecting device for a camera is disclosed which employs a CCD for producing an image signal carrying focus information. A monitoring circuit has a charge storing circuit for storing the charge generated from a light receiving element, so that the...	04/28/1987
4639134	Process and circuit arrangement for amplifying an input current To amplify an input current present at the input of a circuit arrangement with a feedback-coupled operational amplifier, two virtually equal potentials are built up in two different current paths with a common summing point. By means of the potentials, a ...	01/27/1987
4550993	Device for providing a camera system with an information for a focus adjustment A camera system with an auto-focusing system includes a camera body and an interchangeable zoom lens. The interchangeable objective lens stores various data to be sent to the camera body for improving automatic focus adjustment, such as an information nec...	11/05/1985
4533227	Distance measuring circuit A distance measuring circuit controls in a given sequence a distance measuring operation in which a light beam is periodically projected to a target by means of a light projector and reflected light from the target is received by a light receiver, the out...	08/06/1985
4510384	Automatic focusing device with frequency weighted amplification An optical system is automatically focussed by deriving an electrical signal which has a frequency distribution corresponding to the spatial frequency distribution of an image received from a focussing lens; applying to the electrical signal an amplificat...	04/09/1985
4428652	Focus detecting system A focus detecting system detects an image formation state of an image of an object by processing a time-serial output from a photoelectric transducer element through a high-pass filter. In order to suppress the outputs from the high-pass filter correspond...	01/31/1984
4368383	System for focus detection utilizing a photoelectric sensor array A light measuring device capable of amplifying the difference of the time-sequential pulse output signals from the photoelectric sensor array regardless of the magnitude of said pulse output signals, comprises optical system means; means comprising a phot...	01/11/1983
4313655	Focussing system with automatic control of emitted radiant power A focussing system of the type which emits radiation from the camera towards the subject, with the radiation reflected from the subject being incident upon a receiving transducer generating an electrical signal from which focus-control information is deri...	02/02/1982
4300824	Signal processing circuitry for a distance measuring system For a distance measuring system in which a light measuring arrangement responds to changes in light to establish distances, a processing circuit includes a quasi-compression device that receives the electrical signal from the light measuring arrangement a...	11/17/1981

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Class 396/99 - With amplification control