Abstract: In one example in accordance with the present disclosure, a method of determining a printing fluid level is described. According to the method, an on-time of a pump is determined. The pump maintains a fixed pressure in a pressurized reservoir. From the on-time, a fluid level in the pressurized reservoir is determined.

Abstract: A technique includes coupling outlets of a first ink supply and a second ink supply together to provide ink to a printhead of a printer; and pressurizing the first ink supply and the second ink supply with air so that an air pressure of the first ink supply has a different air pressure than an air pressure of the second ink supply. The technique includes monitoring an ink-to-air differential pressure of the first ink supply or the second ink supply; and detecting an ink state for the printer based on the monitored ink-to-air differential pressure.

Abstract: In some examples, an apparatus includes a pressure sensor, and a controller to determine, based on pressure data from the pressure sensor, an amount of time to depressurize a fluid supply from a first pressure to a second pressure, and determine a level of a fluid in the fluid supply based on the amount of time to depressurize the fluid supply from the first pressure to the second pressure.

Abstract: A technique includes coupling outlets of a first ink supply and a second ink supply together to provide ink to a printhead of a printer; and pressurizing the first ink supply and the second ink supply with air so that an air pressure of the first ink supply has a different air pressure than an air pressure of the second ink supply. The technique includes monitoring an ink-to-air differential pressure of the first ink supply or the second ink supply; and detecting an ink state for the printer based on the monitored ink-to-air differential pressure.

Abstract: In some examples, an apparatus includes a pressure sensor, and a controller to determine, based on pressure data from the pressure sensor, an amount of time to depressurize a fluid supply from a first pressure to a second pressure, and determine a level of a fluid in the fluid supply based on the amount of time to depressurize the fluid supply from the first pressure to the second pressure.

Abstract: The invention is directed to calcium fluoride crystal optics with improved laser durability that can be used for the transmission of below 250 nanometer (nm) electromagnetic radiation. The optics consists of CaF2 as the major component and Mg in an amount in the range of 13 ppm to 20 ppm while Ce and Mn are <0.5 ppm. The doped crystal and optics made therefrom have a ratio of 515/380 nm transmission loss of less than 0.3 after exposure to greater than 2.8 MRads of ?-radiation. Further, the doped crystal and optics made therefrom exhibit a greatly improved lifetime as shown by ALDT testing to at least 1 billion pulses.

Abstract: A liquid crystal display (LCD) panel has a variable white balance. The LCD panel includes an LCD screen, a first light source, a second light source and a light path directing the first and second light sources onto the LCD screen and a control circuit used to adjust the relative intensities of the first and second light sources. The first light source has a first color spectrum and the second light source a second color spectrum. The color spectrums of the first and second light sources are mixed in the light path to create a balanced white spectrum.

Abstract: Input video streams that are composited video streams for a videoconference are identified. For each of the composited video streams, video images composited to form the composited video streams are identified. A layout for an output composited video stream can be selected, and the output composited video stream representing the video images arranged according to the selected layout can be constructed.

Abstract: The invention is directed to calcium fluoride crystal optics with improved laser durability that can be used for the transmission of below 250 nanometer (nm) electromagnetic radiation. The optics consists of CaF2 as the major component and Mg in an amount in the range of 13 ppm to 20 ppm while Ce and Mn are <0.5 ppm. The doped crystal and optics made therefrom have a ratio of 515/380 nm transmission loss of less than 0.3 after exposure to greater than 2.8 MRads of ?-radiation. Further, the doped crystal and optics made therefrom exhibit a greatly improved lifetime as shown by ALDT testing to at least 1 billion pulses.

Abstract: The invention is directed to calcium fluoride crystal optics with improved laser durability that can be used for the transmission of below 250 nanometer (nm) electromagnetic radiation. The optics consist of CaF2 as the major component and, in one embodiment, at least one dopant/amount selected >0.3-1200 ppm Mg, >0.3-200 ppm Sr, >0.3-200 ppm Ba, while Ce and Mn are <0.5 ppm. The doped crystal and optics made therefrom have a ratio of 515/380 nm transmission loss of less than 0.3 after exposure to greater than 2.8 MRads of ?-radiation.

Abstract: An asynchronous camera/projector system includes a projection screen, having a key color, a projector, oriented to provide a sequenced background image to the screen, and a camera, located in front of the screen, and oriented to capture a sequenced image of the screen and a real object positioned in front of the screen. The camera and projector operate out of phase, so that the camera does not record the background image.

Abstract: Embodiments for determining a delay are disclosed.

Abstract: The invention is directed to calcium fluoride crystal optics with improved laser durability that can be used for the transmission of below 250 nanometer (nm) electromagnetic radiation. The optics consist of CaF2 as the major component and, in one embodiment, at least one dopant/amount selected >0.3-1200 ppm Mg, >0.3-200 ppm Sr, >0.3-200 ppm Ba, while Ce and Mn are <0.5 ppm. The doped crystal and optics made therefrom have a ratio of 515/380 nm transmission loss of less than 0.3 after exposure to greater than 2.8 MRads of ?-radiation.

Abstract: A projector/camera system includes a projector, configured to project a sequenced image to a projection location, and a camera, located at the projection location and oriented to take an image of a region including the projector. The camera is configured to capture a sequenced image that is synchronized and out of phase with the sequenced image of the projector, thereby to minimize light interference from the projector.

Abstract: A method of displaying an image having a first aspect ratio with a display device having a second aspect ratio includes receiving image data for the image, buffering the image data and creating a frame of the image at the first aspect ratio, defining a first sub-frame and a second sub-frame for the frame of the image at the second aspect ratio, including spatially offsetting the second sub-frame from the first sub-frame in one direction, and alternating between displaying the first sub-frame in a first position and the second sub-frame in a second position spatially offset from the first position with the display device, including optically scaling a displayed image of the first sub-frame and a displayed image of the second sub-frame in the one direction.

Abstract: A display system includes a display device and a data processing module. The display device is configured to display an image and has a processing profile associated therewith. The data processing module is remote from and operatively coupled to the display device and is configured to receive input image data for the image to be displayed and generate processed image data from the input image data based on the processing profile of the display device.

Abstract: A display device has a screen, a housing, a mirror, and a projector. The housing extending away from one side of the screen and has an opening. The mirror is disposed within the housing. The projector is moveable relative to the housing to selectively engage the opening for projection at the mirror and to extend away from a second side of the screen for projection onto a surface.

Abstract: A video delay stabilization system configured for multiple types of video input signals, includes a plurality of video processing modules, and a variable delay module. The plurality of video processing modules include at least one module that is selectively actuable depending upon the type of input signal, each module adding an incremental time delay to a video output signal. The variable delay module is configured to insert into the video output signal a programmed time delay equal to a difference between a maximum possible time delay added by the plurality of video processing modules, and an actual total time delay added by the modules.

Abstract: A projector/camera system includes a projector, configured to project a sequenced image to a projection location, and a camera, located at the projection location and oriented to take an image of a region including the projector. The camera is configured to capture a sequenced image that is synchronized and out of phase with the sequenced image of the projector, thereby to minimize light interference from the projector.

Abstract: An asynchronous camera/projector system includes a projection screen, having a key color, a projector, oriented to provide a sequenced background image to the screen, and a camera, located in front of the screen, and oriented to capture a sequenced image of the screen and a real object positioned in front of the screen. The camera and projector operate out of phase, so that the camera does not record the background image.