1235 results about "Shutter" patented technology

An optoelectronic shutter, a method of operating the same, and an optical apparatus including the optoelectronic shutter are provided. The optoelectronic shutter includes a phototransistor which generates an output signal from incident input light and a light emitting diode serially connected to the phototransistor. The light emitting diode outputs output light according to the output signal, and the output signal is gain-modulated according to a modulation of a current gain of the phototransistor.

A photoelectric conversion device suitable for use as an element of a photodetector array includes a photodiode for generating a first signal charge in response to incident light, an output unit including a JFET, and at least one transistor having an electrode that generates a second signal charge in response to incident light. The first and second signal charges may be output separately or combined. The second signal charge, or the first and second signal charges combined, may be monitored during an exposure time to determine the desired end of the exposure. An image sensor array may have one or more pixels with such light monitoring capability. The output signal for monitoring the light may be output over a reset drain interconnection, directly from the monitoring pixel or through other pixels via inter-pixel MOSFETS. Exposure time may be controlled, by timing a shutter or a strobe or the like, based on the monitored accumulation of signal charge during exposure. Microlenses may be provided on-chip to increase the effective aperture ratio of the array. The microlenses are designed to avoid interfering with the incident light used for monitoring. Resulting pixel-to-pixel variations in effective aperture ratio, if any, may be electronically compensated.

TOF system shutter time needed to acquire image data in a time-of-flight (TOF) system that acquires consecutive images is reduced, thus decreasing the time in which relative motion can occur. In one embodiment, pixel detectors are clocked with multi-phase signals and integration of the four signals occurs simultaneously to yield four phase measurements from four pixel detectors within a single shutter time unit. In another embodiment, phase measurement time is reduced by a factor (1 / k) by providing super pixels whose collection region is increased by a factor “k” relative to a normal pixel detector. Each super pixel is coupled to k storage units and four-phase sequential signals. Alternatively, each pixel detector can have k collector regions, k storage units, and share common clock circuitry that generates four-phase signals. Various embodiments can reduce the mal-effects of clock signal transients upon signals, and can be dynamically reconfigured as required.

An armor (111a) of a scope unit (131) and a diaphragm (123) are arranged to be mutually freely turnable. The shape of an outer section (123c) of the diaphragm (123) and the shape of the inside of a scope joint (130a) of a TV camera unit (130) substantially agree with each other, and the outer section (123c) of the diaphragm (123) and the inside of the scope joint (130a) engage with each other. In a state in which the outer section (123c) of the diaphragm (123) and the inside of the scope joint (130a) are engaged with each other, a ring screw (133) is meshed with a thread (130b) so that the scope unit (131) and TV camera unit (130) will unitedly be joined with each other. At this time, since the outer section (123c) of the diaphragm (123) is engaged with the scope joint (130a), the diaphragm and TV camera unit can be turned relative to an objective optical system (119) and relay optical system (121) with the optical axis of the relay optical system (121) as an axis of turning. Moreover, a liquid-crystal shutter 124 in the TV camera unit (130) has two interceptive areas (124a, 124b) which can be switched temporally alternately. The interceptive areas (124a, 124b) intercept one of two light beams passing through either of aperture stops (123a, 123b).

A process cartridge detachably mountable to the main body of an image forming apparatus includes an electrophotographic photosensitive drum, at least one process device for acting on the drum, a cartridge frame holding the drum and the process device and exposing a portion of the drum, a shutter member provided for movement between a position to protect and a position to permit exposure the of the drum, and a shutter opening and closing link mechanism for moving the shutter member in operative association with the opening and closing operation of an openable and closable door when the process cartridge is mounted on the cartridge mounting portion of the main body of the image forming apparatus.

The invention relates to a light source alternate strobe synchronous camera shooting method and a vision detection system. The light source alternate strobe synchronous camera shooting method is characterized in that the vision detection system is arranged and comprises a camera, a spike filter, light sources, a trigger signal generating device, an image collecting card and an image processing module; the vision detection system is placed above an object to be detected; the trigger signal generating device simultaneously sends multi-way synchronous square signals to a camera shutter and each of the light sources to trigger the camera shutter and the light sources to work; during one trigger period of the synchronous square signals, the light sources are alternately lightened to irradiate the object to be detected, during the period that each of the light sources is lightened, the camera shoots an image of the light source irradiated object to be detected and sends the image to the image processing module through the image collecting card; and during different trigger periods of the synchronous square signals, the light sources are alternately lightened or extinguished in certain frequency periods, and the camera alternately shoots images of the object to be detected until all the images of the object to be detected are collected. The light source alternate strobe synchronous camera shooting method and the vision detection system can be widely applicable to processes that objects to be processed are subjected to image shooting during groove detection, rear-time welding seam tracking, welding seam molding quality detection and the like in robot automatic welding.

Apparatus for generating image data, including a memory configured to store data defining a volume having a plurality of objects and at least one viewport, a memory configured to store motion data for each of the objects, configuration data for the viewport and instructions, and a processor configured by the instructions to perform the steps of, for each of the objects a position is calculated along its motion path at an interval of a user-specified time period, wherein the interval is dependent upon the shutter length for the object; the object is then translated to this position; the objects are then rendered through the viewport to produce a sample; and when a specified plurality of samples have been rendered they are blended to generate image data wherein each object is independently motion blurred.

TOF system shutter time needed to acquire image data in a time-of-flight (TOF) system that acquires consecutive images is reduced, thus decreasing the time in which relative motion can occur. In one embodiment, pixel detectors are clocked with multi-phase signals and integration of the four signals occurs simultaneously to yield four phase measurements from four pixel detectors within a single shutter time unit. In another embodiment, phase measurement time is reduced by a factor (1 / k) by providing super pixels whose collection region is increased by a factor “k” relative to a normal pixel detector. Each super pixel is coupled to k storage units and four-phase sequential signals. Alternatively, each pixel detector can have k collector regions, k storage units, and share common clock circuitry that generates four-phase signals. Various embodiments can reduce the mal-effects of clock signal transients upon signals, and can be dynamically reconfigured as required.

The present invention provides a pixel circuit comprising a pinned photodiode, at least one first transfer gate for electrically connecting the pinned photodiode to at least one storage node and at least one further transfer gate. The at least one further gate can connect the at least one storage node with at least one floating diffusion node. At least one merging switch is included for allowing connection between the at least one floating diffusion node with one or more capacitor nodes, which can accept charge that exceeds the maximum storage capacity of the storage node.

A method of controlling airflow through a grille on a front end of a vehicle comprising the steps of: detecting vehicle operating conditions; determining a desired percentage of airflow through the grille based on the desired operating conditions; actuating grille airflow shutters to an open position for the determined desired percentage of a predetermined time interval; and actuating the grille airflow shutter to a closed position for a remaining percentage of the predetermined time interval.

An electro-optical framing camera forward motion compensation (FMC) system comprising a moving shutter and a full frame focal plane array detector is disclosed. The reconnaissance system is designed to minimize the variation of image motion from a target scene across the focal plane array. The full frame focal plane array, such as a Charge Coupled Device (CCD), is designed to transfer and add the image from pixel to pixel at a predetermined rate of image motion corresponding to the region exposed by the focal plane shutter. The focal plane shutter aperture and velocity are set to predetermined values coordinated with the available illumination. The CCD image transfer rate is set to minimize the smear effects due to image motion in the region of the scene exposed by the focal plane shutter. This rate is variable with line of sight depression angle, aircraft altitude, and aircraft velocity / altitude ratio. Further, a method of FMC utilizes a comparison of a measured light level to a standard value in order to determine the appropriate exposure time and shutter motion rate. An optimal FMC clocking signal is calculated based on image motion equations incorporated in the processing unit of the reconnaissance system.

A shading member-equipped optical connector plug is compact while having the compatibility to engage existing connector receptacles. The connector plug includes a shading member having a shutter housing enclosing a plug frame slidably on an outside thereof. The shutter housing is inserted into an engagement opening of a connector receptacle to be engaged when the shading member-equipped optical connector is connected. The shading member also has a shutter one end of which is supported by the shutter housing at a front part of the housing and another end of which is urged by an elastic force and closes so as to shade the optical fibers at a position in front of the ferrule, and an elastic member disposed between the plug frame and the shutter housing that urges the shutter housing forward.

A process cartridge detachably mounted to an image forming apparatus is provided with a lock mechanism in a shutter member of opening and closing a toner discharge port, and once the process cartridge is mounted onto an image forming apparatus, the lock mechanism is configured to be unlocked so as to enable the shutter member to open and close subject to unlocking of a lock.

The invention discloses a global shutter pixel unit. The global shutter pixel unit comprises a photodiode, a signal reading circuit, a signal maintaining circuit and a signal output circuit, wherein the photodiode is used for converting a received optical signal into an electrical signal, the signal reading circuit is used for reading a reset signal and the electrical signal subjected to photovoltaic conversion of the photodiode in sequence, the signal maintaining circuit comprises two parallel capacitors which are used for maintaining the signals read by the signal reading circuit respectively, one end of each capacitor is grounded, the other end of each capacitor is connected with two switch tubes to control the charging and discharging states of the corresponding capacitor, the signal output circuit is used for outputting the signals maintained by the two capacitors, and the difference between the signals maintained by the two capacitors is the signal of the global shutter pixel unit. The global shutter pixel unit can achieve global exposure and has a high dynamic range.

In a solid-state image pickup apparatus, an image pickup section includes a color separating section having color filters assigned to three primary colors for separating colors of light incident from a desired scene. The color filters assigned to the color G are arranged in stripes. A system controller controls an output of a drive signal generating section for each of an all pixel read mode and a photometry control mode in response to the stroke of a shutter release operation. In the photometry control mode, the image pickup device is supplied with drive signals in response to a horizontal timing signal fed from a timing signal generator and a control signal fed from the system controller. The image pickup device thus reads out only the signal charges representative of the color G in this mode, thereby especially implementing the signal charge reading at a doubled speed.

The invention discloses an automatic photo-taking method of a handheld device. The handheld device is internally provided with a camera; the automatic photo-taking method comprises the steps that: 1. a shake critical value is obtained and stored in the system before taking photos by a user; 2. the system obtains the camera stabilizing average value when the user takes photos; 3. whether the average value is smaller than the shake critical value or not is judged; and 4. when the average value is smaller than the critical value, the system presses down the shutter button automatically so as to finish photo taking. According to the automatic photo-taking method, when the mobile phone camera is not provided with the automatic focusing function or the scene causes the automatic focusing to fail, the shutter button is pressed down according to the shake judgment decision, the shutter button is pressed down automatically through automatic focusing and shake recognition instead of the user, so that the photo-taking effect is ensured effectively, the photo is realistic and beautiful since the shake is controlled from the source, and the operation is simple and convenient.

To aim to provide a video output device that is capable of output a plurality of video streams with use of shutter glasses, and is capable of dynamically switching between different videos such that in the case where a plurality of viewers are viewing a video output by the video output device, only a viewer who is operating a remote control can view a video stream different from a video stream other viewers are viewing. Operation signals each instructing to start or terminate an operation mode are received. In an operation mode, time-sharing output of a first video stream and a second video stream is performed, and synchronizing signals each in synchronization with a time-sharing timing are transmitted. In a normal mode, images that are each generated based on any of images constituting the first video stream are output, and images constituting the second video stream are not output.