Abstract: An ink jet printer comprising an ink jet print head having at least one row of a plurality of ink ejecting ports for ejecting ink droplets along a plurality of ink droplet paths, the ink jet print head residing at a first elevation; a collimated light source and a detector each residing at a second elevation that is lower than the first elevation, the detector positioned opposite the collimated light source, the ink jet print head being movable to a test position where the at least one row of a plurality of ink ejecting ports can fire non-printing droplets, the collimated light source directing light at the detector along a light path that intersects the plurality of ink droplet paths when the print head resides in the test position; and an aperture located in between the collimated light source and detector and proximate to the detector to limit a field of view of the detector and increase an optical signal-to-noise ratio of the detector.

Abstract: Disclosed are apparatus and methods for compensating for the change in length of an encoder strip due to environmental effects such as temperature and humidity. The apparatus and methods utilize two simple optical sensors spaced apart and mounted on a substrate having a different coefficient of thermal expansion than the encoder strip; the substrate is mounted to the movable component which is to be positioned, such as a printer carriage. Embodiments of the methods utilize information from the two sensors, in conjunction with information from the analog encoder used to position movable component, to compensate for environmental effects.

Abstract: A method of performing alignment for printing with a printhead includes bidirectionally printing a plurality of rows of alignment blocks, wherein a bidirectional offset of a plurality of bidirectional offsets is different for each row of the alignment blocks; optically measuring each row to obtain measurement data; determining a statistical data value for each row based on the measurement data; and applying a respective bidirectional offset of the plurality of bidirectional offsets corresponding to a row having the lowest statistical data value of the plurality of rows to align the printhead for printing with the printhead.

Abstract: An inkjet image forming apparatus and a printing method for the same. In the printing method, a printhead is oscillated according to a type of a print medium to compensate for a malfunctioning nozzle or to perform high resolution printing. Thus, a higher resolution image than an actual resolution of the printhead can be obtained, and printing quality can be enhanced by compensating for a malfunctioning nozzle.

Abstract: A printing apparatus includes a printing head that has a plurality of nozzle modules corresponding to various ink colors arranged in parallel, an abnormal nozzle specifying unit that specifies an abnormal nozzle that is deviated from an ideal dot printing position by a predetermined distance or more among nozzles constituting each of the nozzle modules of the printing head, and a density correction unit that corrects a density of a dot printing line to be printed by the nozzles including the abnormal nozzle specified by the abnormal nozzle specifying unit and printing the same line as the abnormal nozzle. The density correction unit corrects printing data corresponding to the dot printing line printed by the nozzles including the abnormal nozzle and printing the same line as the abnormal nozzle so as to be close to densities of other dot printing lines to be printed by only normal nozzles.

Abstract: The droplet deposition position error measurement method, comprises the steps of: ejecting liquid droplets from a liquid ejection head including a plurality of liquid droplet ejection ports in such a manner that the liquid droplets are deposited on a recording medium; determining an amount of a droplet deposition position error with respect to an ideal droplet deposition position on a recording surface of the recording medium, according to a droplet deposition result obtained from the liquid droplets on the recording medium; separating a first error component caused by an error in a relative position between the liquid ejection head and the recording medium, and a second error component caused by an error in an ejection direction of each of the liquid droplet ejection ports, from the determined amount of the droplet deposition position error; and obtaining error information relating to at least one of the first and second error components.

Abstract: A system for concurrent inkjet printing and defect inspection is provided. The system includes at least one print head adapted to deposit ink on a substrate, at least one imaging device adapted to scan the substrate, and a controller adapted to receive image data scanned by the imaging device during printing, determine if there are any printing defects on the substrate utilizing the processed image data, and transmit a control signal indicating a disposition of the substrate. The imaging device is adapted to scan the substrate during each print pass. Numerous other aspects are also disclosed.

Abstract: An encoder is adapted to be opposed to a scale provided with a plurality of marks or slits arranged in a first direction at predetermined intervals. A plurality of detectors is arranged in a second direction perpendicular to the first direction while being staggered in the first direction, each of which detects a position of each of the marks or slits, and the plurality of detectors being operable to respectively output an detection signal which has a first frequency. A first signal generator is operable to generate an first output signal which has a second frequency which is 2n-times of the fist frequency based on the detection signal output from a first detector of the plurality of detectors. A second signal generator is operable to generate a second output signal which has the second frequency based on the detection signal output from a second detector of the plurality of detectors.

Abstract: A printhead assembly includes a printhead. The printhead includes a carrier which carries a integrated circuit (IC) configured to eject ink. The carrier defines a plurality of ink passages each in fluid communication with the IC. An elongate support supports the printhead and defines a plurality of ink chambers each in fluid communication with a respective ink passage. The support includes a core which defines the ink chambers and a multi-layered metal shell in which the core is received.

Abstract: An inkjet image forming apparatus and a printing method for the same. The printing method includes dividing image data to be printed in a single line into “n” groups, reducing a transferring speed of a print medium, and sequentially printing the divided “n” groups in “n” lines. The image data to be printed in the single line is divided and printed with a predetermined driving frequency. A transferring speed of the print medium is controlled to print the image data such that an instantaneous maximum consumption current and an average consumption current are reduced, resulting in the use of the smaller capacity power supply. The print medium is slowly transferred and the divided image data is sequentially printed, thereby enhancing printing quality.

Abstract: An ink jet printer has a drum rotated about its axis and past a translatable print bar located adjacent and parallel thereto. The print bar has equally spaced, identical print heads mounted along the length thereof to print images on the drum or directly on a recording medium mounted on the drum. Each print head has an array of high density nozzles that extend for a predetermined length. The spacing between print heads is equal to the integer multiples of the nozzle array length. The print bar may be translated a distance equal to a integer divisor of the nozzle array length up to one full nozzle array length during each drum revolution. The drum rotation and concurrent print bar translation produce barber pole shaped swaths of image on the drum by each print head. Multiple passes of the drum are required to print a complete image.

Abstract: A printing apparatus which discharges an electroconductive ink includes an ink transporting head having a head main body in which a discharge port and an individual ink channel are formed, an individual electrode which is formed on a surface defining the individual ink channel, and an insulating layer which covers the individual electrode, and a transfer drum which is rotatably supported. When a drive voltage is applied to the individual electrode, since a liquid repellent property of the insulating layer is declined due to an electrowetting phenomenon, the ink is discharged from the discharge port. Furthermore, a distance between the discharge port and the transfer drum is less than a diameter of a liquid droplet equivalent to a liquid discharged at a time from the discharge port. Accordingly, it is possible to provide a printing apparatus having a simple structure, and of which a size can be reduced easily.

Abstract: A plurality of nozzle arrangements (70) is positioned on the substrate (12) of printhead chip. Each arrangement includes a nozzle chamber structure (72, 74, 76, 78) positioned on the substrate and defines a nozzle chamber (80) from which ink is ejected. An ink-ejecting mechanism is operatively arranged with respect to the nozzle chamber structure. The ink-ejecting mechanism includes at least one moving component (106) displaceable to generate a pressure pulse within the nozzle chamber to eject ink. An actuator (92) is positioned on the substrate and has at least one working member (4) that is of a material having a coefficient of thermal expansion such that the working member is capable of substantially rectilinear expansion.

Abstract: An inkjet printhead assembly includes an elongate support. A plurality of printhead modules is arranged end-to-end along the support. Each printhead module includes a carrier carrying an elongate printhead configured to eject ink. Ends of each carrier define one or more complementary formations so that each adjacent pair of carriers is nested together. The printheads are positioned on the carriers to form a pair of parallel rows of spaced apart printheads with one of the rows being longitudinally offset with respect to the other row so that each printhead in the one row overlaps each adjacent printhead in the other row to enable printing without gaps along the support.

Abstract: To provide an electrostatic actuator capable of attaining a large diaphragm displacement by low voltage drive. Furthermore, a droplet discharge head provided with this electrostatic actuator, a method for driving a droplet discharge head, and a method for manufacturing an electrostatic actuator are provided. A diaphragm, an individual electrode facing the diaphragm with a gap therebetween, while a voltage is applied between the diaphragm and the individual electrode, and an insulating film which is disposed on a surface of the diaphragm, the surface facing the individual electrode, are included, wherein the insulating film is converted to an electret.

Abstract: A fluid ejection apparatus. The fluid ejection apparatus includes a chamber, a manifold, an orifice, a first bubble generating element and a second bubble generating element. The chamber contains fluid. The manifold is connected to the chamber. The fluid flows into the chamber at a first direction through the manifold. The orifice is connected to the chamber. The first bubble generating element is disposed above the chamber and close to the orifice to generate a first bubble. The first bubble generating element is substantially parallel to the first direction. The second bubble generating element is disposed above the chamber and is substantially parallel to the first direction to generate a second bubble. The second bubble generating element is close to the orifice and opposite to the first bubble generating element. The fluid in the chamber is ejected via the orifice by the first and second bubbles.

Abstract: The ink-jet printer head includes a cavity unit which has a plurality of pressure chambers arranged in a plurality of pressure-chamber rows; an actuator unit which has individual surface electrodes corresponding to the pressure chambers respectively, and land portions conducted to the individual surface electrodes respectively; and a flexible cable which has connection terminals and signal lines. The land portions and the connection terminals are electrically connected. In each of the pressure-chamber rows, the land portions are arranged such that a certain land portion is shifted from another land portion adjacent to the certain land portion in a longitudinal direction of the pressure chambers. Accordingly, even when the pressure chambers are arranged highly densely, it is possible to electrically connect the flexible cable and the actuator unit easily.

Abstract: An inkjet printhead integrated circuit includes a substrate defining an ink supply channel. An ink chamber structure is arranged on the substrate to define an ink chamber into which ink from the ink supply channel can be supplied and an ink ejection port from which ink can be ejected from the ink chamber and an internal rim interposed between the ink supply channel and the ink chamber. A support extends from the substrate outside the ink chamber. A thermal bend actuator extends from the support and terminates in a paddle within the ink chamber. The thermal bend actuator is configured to move the paddle towards and away from the ink ejection port upon actuation to eject ink in the ink chamber through the ink ejection port. A periphery of the paddle and the internal rim are shaped to limit flow of ink from the ink chamber back into the ink supply channel when the paddle is displaced towards the ink ejection port.

Abstract: The liquid ejection head comprises: a plurality of pressure chambers connected to a plurality of nozzles from which liquid is ejected, the pressure chambers being arranged in a two-dimensional configuration; a diaphragm which constitutes a wall of each of the pressure chambers, the wall being located opposite to the nozzles; a plurality of piezoelectric elements disposed at positions corresponding to the pressure chambers on a surface of the diaphragm which is on an opposite side of the diaphragm from the pressure chambers, the piezoelectric elements causing portions of the diaphragm corresponding to the pressure chambers to deform; an intermediate plate which is located on a piezoelectric element side of the diaphragm where the piezoelectric elements are disposed and which forms a space around a periphery of each of the piezoelectric elements; electrical wires for electrically connecting drive circuits which drives the piezoelectric elements with drive electrodes of the piezoelectric elements, the electrical

Abstract: A head, for an ink-jet printer, includes a channel unit having a plurality of elongated pressure chambers arranged in a plurality of pressure-chamber rows; an actuator unit having individual surface electrodes corresponding to the pressure chambers respectively, and land portions each of which is conducted to one of the individual surface electrodes; and a flexible cable having connection terminals and signal lines. The land portions are electrically connected to the connection terminals. In each of the pressure-chamber rows, the land portions are arranged such that a certain land portion of the land portions is shifted, in the longitudinal direction of the pressure chamber, from another land portion adjacent to the certain land portion. Accordingly, it is possible to easily connect the flexible cable and the actuator unit easily even when the pressure chambers are arranged highly densely.

Abstract: An ink-jet head includes a channel unit having pressure chambers; and a piezoelectric actuator which includes a vibration plate having an electroconductive substrate and an insulating layer, a piezoelectric layer arranged in an area overlapping with the pressure chamber, and a common electrode and an individual electrode formed on the piezoelectric layer. A recess is formed in an area overlapping with the pressure chamber. A wiring connected to the individual electrode is formed on the upper surface of the vibration plate in an area in which the piezoelectric layer is not formed. Accordingly, there is provided a liquid-droplet jetting apparatus and a liquid transporting apparatus having an improved durability, requiring a less electric power consumption, capable of performing a pulling ejection, and in which a wiring can be performed highly densely.

Abstract: An ink-jet head includes a head main body including a channel unit in which a pressure chamber is formed, and a piezoelectric actuator having a piezoelectric deformation portion facing the pressure chamber, and an FPC which has a substrate and a plurality of wires, and which is arrange on an upper side of the piezoelectric actuator. A plurality of projections bent to form a projection toward the head main body is formed in the FPC. A front end of the projections is in contact with an area not facing the pressure chamber, on a surface of the piezoelectric actuator. Accordingly, it is possible to suppress hindering of a deformation of the piezoelectric deformation portion accompanied by a liquid discharge, due to a contact with a flexible flat cable.

Abstract: A cavity unit of an ink-jet printer head includes elongated pressure chambers, a manifold, and communicating channels between pressure chambers and the manifold. Each of the communicating channels has a first straight portion and a second straight portion which are recesses extending in a longitudinal direction of the pressure chambers, and a bent portion which communicates the first straight portions and the second straight portions. In a plan view, each of the communicating channels overlaps entirely with a pressure chamber communicating with the communicating channel. Accordingly, there is provided an ink-jet printer head having a substantial throttle resistance and a long communicating channel, in which there is no effect of a cross-talk between the pressure chambers.

Abstract: An inkjet recording apparatus is provided with a recording head, a main tank, a tube, a transfer device, a transfer amount determination device and a driving device. The recording head includes a sub tank for storing ink and an ejection nozzle. The main tank stores ink to be supplied to an inside of the sub tank. The tube connects the sub tank and the main tank. The transfer device transfers ink existing in the tube. The transfer amount determination device determines at least one transfer amount of a mixture of the ink and air transferred through the tube while air moves from a first detection position to a second detection position of the tube. The driving device controls driving of the transfer device in accordance with the at least one transfer amount determined by the transfer amount determination device.

Abstract: The present invention comprises at least a reservoir tank which stores an ink supplied from an ink supply section, and an ink chamber which distributes and supplies the ink supplied from the reservoir tank to each recording head in a recording head group, wherein the reservoir tank maintains a predetermined negative pressure state with respect to the ink in a plurality of ink nozzles of each recording head through the ink chamber, and the ink chamber supplies the ink with an uniformed pressure loss in ink supply paths to each recording head in the recording head group.

Abstract: A simplified refilling assembly of DURABrite ink cartridge comprises an ink bottle connector, a pipe and an ink cartridge connector; the ink cartridge connector has a plug pipe to be connected with the refilling hole of the ink cartridge hermetically; the ink bottle connector is furnished with a L-shaped connector and a recovering cylinder, which are molded into one piece to be plugged into a bottle plug of the ink bottle; the ink cartridge and the ink bottle are connected each other by means of a refilling assembly; a syringe is plugged into the refilling hole of the ink cartridge; when the pull grip is pulled upward, the ink in the ink bottle will be drawn to flow into the ink chamber of the ink cartridge; then, the syringe is plugged into the recovering cylinder of the ink bottle connector so as to recover ink for re-use.

Abstract: The image forming apparatus attaches a plurality of liquids onto a recording medium so as to form a desired image, the image forming apparatus comprising: a first liquid attaching device that attaches onto the recording medium a first liquid which contains a high-boiling organic solvent, a polymerization initiator, and a diffusion preventing agent for preventing diffusion and smearing of a second liquid to be attached onto the recording medium after the first liquid is attached onto the recording medium; a second liquid attaching device that attaches the second liquid which contains a radiation-curable polymerizable compound, onto at least an area of the recording medium onto which the first liquid has been attached; a third liquid attaching device that attaches a third liquid which contains a polymerization initiator and a radiation-curable polymerizable compound, onto at least an area of the recording medium onto which the first liquid and the second liquid have been attached; and a first radiation irradiat

Abstract: A print roll unit includes an elongate core defining a plurality of elongate ink chambers for each storing a respective type of ink. A roll of print media includes a tubular former in which the core can be received and a length of print media which is wound upon the former. A housing includes a pair of molded covers which can be fastened together in a releasable manner to house the roll of print media.

Abstract: The image forming apparatus comprises: a first liquid ejection device which, while scanning to and fro in a direction substantially orthogonal to a conveyance direction of a recording medium, ejects a first liquid containing a coloring material onto the recording medium; second liquid ejection devices which are disposed respectively on both regions in a scanning direction outside the first liquid ejection device, the second liquid ejection devices ejecting a second liquid onto at least an area of the recording medium on which the first liquid is to be deposited prior to the first liquid being deposited while the second liquid ejection devices perform a scan together with the first liquid ejection device; and first radiation irradiating devices which are disposed respectively on both regions in the scanning direction outside the first liquid ejection device, the first radiation irradiating devices irradiating an area of the recording medium on which the first liquid and the second liquid have been deposited wi

Abstract: An image drum presses and transfers an ink image formed on the surface thereof onto an image receiving medium, and an image system having the same of a solid inkjet image forming apparatus. The image drum includes a first cylindrical body which forms an image on the surface thereof and transfers the image onto an image receiving medium by pressure; a heat generator formed in the first cylindrical body which heats the first cylindrical body; a space part formed between the first cylindrical body and the heat generator; and including a certain amount of operational fluid transferring heat between the first cylindrical body and the heat generator. The operational fluid is contained between the first cylindrical body and the heat generator. Accordingly, when the image drum is heated, the surface temperature of the image drum can be precisely and uniformly controlled, power consumption decreases, and heat is efficiently transmitted.

Abstract: The present invention relates to printing apparatus and particularly, but not exclusively, to printing apparatus for use with personal computers and portable computing devices (such as laptops). The invention provides a printer chassis (8) manufactured from a disposable and biodegradable material. A further aspect of the invention provides a printer assembly comprising the aforementioned chassis (8) and at least one sheet of paper (10) to be printed, said paper (10) being located within the chassis. The invention thereby provides a printer which is relatively inexpensive to manufacture and convenient to use.

Abstract: Systems and methods of a multiple dispensing system may include an image carrier, and may include a plurality of substantially aligned developing units positioned to develop image information on the image carrier. Each developing unit may include only one ink container and only one developer housing. The systems and method may also include a first dispensing system positioned upstream in a sheet feed direction of the plurality of substantially aligned developing units. The first dispensing system may include a first ink container and a first developer housing. The first developer housing may be configured to receive first imaging media from the first ink container and second imaging media from at least one other ink supply source.

Abstract: An image forming apparatus including: a photoconductor, adapted such that an electrostatic latent image is formed thereon and extending in a first direction; and an optical scanner, operable to emit a light beam to expose the photoconductor while scanning in the first direction, wherein: the photoconductor and the optical scanner define a space therebetween; and the space allows air to flow therethrough in the first direction.

Abstract: An image drum and method of producing the same is provided. The drum includes a drum body having a pair of semi-cylindrical members, each being oppositely bonded and having a bonding surface having electrodes being separated from one another by insulating areas, and line electrodes formed on the periphery; a control unit including conductive parts corresponding to the line electrodes, and nonconductive parts interposed between the conductive parts, and disposed inside the drum body; and a connecting member electrically coupling the line electrodes to the control unit. The method includes cutting a cylindrical member into two semi-cylindrical members; oxidizing the surfaces of the members; forming electrodes on each of the cut surfaces; partially oxidizing a substrate; bonding the two semi-cylindrical members across the substrate such that the electrodes and the conductive parts couple together; and forming line electrodes on the periphery of the members.

Abstract: In a thermal printer provided with a thermal head printing on a paper sheet and a paper feed motor feeding the paper sheet, the operation of the thermal head and the paper feed motor is controlled on the basis of detected temperature data of the thermal head and the paper feed motor detected by a single temperature detecting device.

Abstract: Thermal printing systems, thermal printers and methods for printing are provided. A print order is received at a printer driving device. The printer driving device forms a set of page data streams. Each page data stream comprises image data representing one image from the print order in a format that can be used by a printer. The printer prints images by transferring donor material for patches of donor material from a donor ribbon onto a receiver medium. The printer is operable to print images in a manner that exhausts a full donor patch set or fractional donor patch set. Printing is performed using donor material from a fractional donor patch set when it is determined at the printer that an image from a page data stream can be printed using a fractional donor patch set and when it is determined that a fractional donor patch set is available for printing.

Abstract: Optically visible marks are disposed on a medium by exposing at least a portion of a coating disposed on the medium to thermal energy from a thermal print head in an optical disc drive.

Abstract: Embodiments include forming optically visible marks in a radiation-sensitive coating disposed on an optical disc using electromagnetic radiation having a first wavelength and bleaching a background of the radiation-sensitive coating using electromagnetic radiation having a second wavelength.

Abstract: It is an object of the present invention to realize a multi-beam optical scanning device which is suitable for high speed and high recording density by almost completely offsetting and correcting a deviation of focusing positions in a main scanning direction of plural spots in an entire surface to be scanned without deteriorating focusing properties at all.

Abstract: A method and a device adapt the number of stepping motor cycles K to a temperature-dependent length change of a feed spindle in an exposer for recording printing originals. The length change is measured via a reference rod, which is disposed parallel to the feed direction of the exposure head carrier. A reference distance is disposed on the reference rod. The exposure head carrier is located on a feed spindle, which is driven by a stepping motor. A number K0 of cycles of the stepping motor per revolution of the exposure drum for a specific printing result is determined once. A corrected number Kk of stepping motor cycles for achieving the same printed result is then determined as a function of the different temperature-dependent length changes of feed spindle and reference rod.

Abstract: A wireless mobile phone is equipped to operate in an unauthenticated and an authenticated mode of operation, depending on whether a user has been authenticated against an authentication reference. In one embodiment, the authentication is performed against an authentication reference retrieved from an identity card, and the wireless mobile phone includes a reader to retrieve the authentication reference from the identity card. In one embodiment, the authentication reference is photograph, and the wireless mobile phone includes a camera (132) to enable a photograph to be taken and be used for authentication. In one embodiment, the photograph is a photograph of the user.

Abstract: An integrated digital picture server and A/V telecommunication device includes a network connection, a telecommunications processor connected to the network connection and a video processor connected to the network connection. A memory is connected to the video processor and a picture file input connection is connected to the memory. The picture files stored in memory are displayed by the video processor on a video display.

Abstract: A mobile terminal with a function for setting an output volume of an audio signal to prevent acoustic shock is disclosed. In the mobile terminal, a receiver is integrated into a speaker. The speaker limits the initial output volume of an audio signal to a predetermined level. The mobile terminal provides a menu for setting an output volume of an audio signal. The menu enables a user to select either to maintain the currently limited volume level or to change to a volume level set for a speaker mode. Since an audio signal received with the connection of an incoming call is output at a predetermined reference volume level, acoustic shock caused by unexpectedly high-level of sound volume can be prevented.

Abstract: A stereoscopic imaging system incorporates a plurality of imaging devices or cameras to generate a high resolution, wide field of view image database from which images can be combined in real time to provide wide field of view or panoramic or omni-directional still or video images.

Abstract: A storage apparatus for DTV/ATV/DAB/ANALOG AUDIO BROADCASTING media is provided, including a USB hub or USB serial interface engine (SIE), at least a DTV/ATV/DAB/ANALOG AUDIO BROADCASTING interface converter, a video/audio decoding interface and a plurality of storage media interfaces. The upstream port of the USB hub or the USB serial interface engine is connected to a USB interface of an electronic device. The DTV/ATV/DAB/ANALOG AUDIO BROADCASTING interface converter and a plurality of storage media interfaces are connected respectively to the downstream ports of the USB hub or endpoints of USB serial interface engine. The DTV/ATV/DAB/ANALOG AUDIO BROADCASTING interface converter can convert DTV/ATV/DAB/ANALOG AUDIO BROADCASTING signals into data uploaded through the USB hub or the USB serial interface engine to the electronic device with the USB interface for playing.

Abstract: A video apparatus is provided with automatic deinterlacing and inverse telecine pre-filtering capability to automatically analyze the frames of the video to determine at least whether the video is one of telecine, non-telecine progressive and non-telecine interlaced formatted, and to automatically reformat the video into a non-telecine progressive format if the video is determined to be one of telecine and non-telecine interlaced formatted.

Abstract: To calibrate images from an overhead camera, two equal-length reference lines at different heights relative to the floor plane are imaged. By comparing the resultant image-width of each of these lines in the view provided by the camera, the effective focal point of the camera is determined. In a preferred embodiment, a doorframe is used to provide equal-length lines at different heights parallel to the floor. The threshold of the doorway at the floor plane is used as a reference plane, and a parallel calibration line at a known/measured height in the doorway is defined. The image produced by a vertically oriented camera of these two equal length lines will show a longer line at the elevated position, the different widths of the images of these lines being dependent upon the camera's effective focal point. From these two projections of the equal-length lines at different heights, the camera's focal point distance from the reference floor plane is determined.

Abstract: Systems and methods for selecting reception of video streams in an adaptive fashion, for example, from a multi-stream video source. In one implementation, reception of the video streams may be dynamically switched such that optimal bandwidth is selected in adaptive fashion using a set of video parameters, such as the size or dimensions of the viewing window, and/or a set of system and network parameters, to ascertain the optimal stream selection.

Abstract: Systems and methods for providing high-quality region of interest (HQ-ROI) viewing within an overall scene by enabling one or more HQ-ROIs to be viewed in a controllable fashion, as higher quality ‘windows-within-a-window’ of regions (spatial subsets) of a scene.

Abstract: The filtering tasks that are conventionally applied in a video monitoring application, to distinguish images that may be relevant to the application, are distributed to the image source, or near-source devices. Source devices, such as cameras and playback devices, and near-source devices, such as video concentrators and streaming devices, are configured to include video processing tools that can be used to pre-filter the image data to identify frames or segments of frames that include image information that is likely to be relevant to the receiving video monitoring application. In this manner, the receiving processor need not spend time and resources processing images that are pre-determined to be irrelevant to the receiving application.