摘要:
Apparatus and methods are provided for efficiently and non-destructively determining the thermal properties of materials having arbitrary surface textures. Two regions of a sample are each contacted by respective pairs of probes, where each pair includes a first probe made of a first material and a second probe made of a second material. A voltage sensor is arranged between the two probes of each pair, and between the probes of the same material from each pair. Nodes connect the voltage sensors to the probes. A temperature gradient is established between the two regions, while the nodes are maintained at a constant temperature. The Seebeck coefficient of the material and the temperatures of the regions can be determined from the voltages measured by the voltage sensors.
摘要:
A controller and method have been described for use in conjunction with a sequential display system including a display having a plurality of pixels. A series of update cycles is performed on the display to establish the grayscale value of each pixel for viewing on the display based on the pixel values for a video frame by selectively switching each pixel responsive to the update cycles such that a total number of the update cycles is less than the total number of pixel values of the frame. Statistical characterization of frame data can be the basis of the reduction of the number of update cycles.
摘要:
A device, system and method of playing back a digital audio stream wherein large amounts of pre-emphasis of the high frequencies is applied before the digital to analog conversion and before an interpolation or digital filter, followed by de-emphasis in the analog domain in order to yield better audio fidelity.
摘要:
A microdisplay having interface circuitry on the same silicon backplane to allow it to receive digital images and video in a variety of formats and convert same to field sequential color signals for generation of full color images. It includes column data processors having a comparator for each block of N-columns of pixels. Image data is double-buffered in SRAM memory cells located beneath the pixel electrodes, but not within each pixel. The stored data is logically associated with each pixel via the column data processors. Image compression is accomplished by converting RGB data to a variant of YUV data and sampling the color components of the converted data less frequently than the luminance components. The SRAM image buffer consumes a reduced amount of power. A temperature compensation scheme allows the temperature of the microdisplay to be sensed and the drive voltage to the pixel electrodes to be varied in response thereto.
摘要:
A controller and method have been described for use in conjunction with a sequential display system including a display having a plurality of pixels. A series of update cycles is performed on the display to establish the grayscale value of each pixel for viewing on the display based on the pixel values for a video frame by selectively switching each pixel responsive to the update cycles such that a total number of the update cycles is less than the total number of pixel values of the frame. Statistical characterization of frame data can be the basis of the reduction of the number of update cycles.
摘要:
A controller and method have been described for use in conjunction with a sequential display system including a display having a plurality of pixels. A series of update cycles is performed on the display to establish the grayscale value of each pixel for viewing a given frame using the display during which update cycles each pixel can have a single update to change states and without refreshing an existing state of the pixel.
摘要:
A device, system and method of playing back a digital audio stream wherein large amounts of pre-emphasis of the high frequencies is applied before the digital to analog conversion and before an interpolation or digital filter, followed by de-emphasis in the analog domain in order to yield better audio fidelity.
摘要:
A support frame system for placing and securing reinforcing bars, which includes an elongated beam member which includes a plurality of saddles at a predetermined spacing. Support legs extending from the beam member hold the beam member, and thus also the re-bars, at a fixed distance above the mold. Once re-bars have been laid in the desired saddles, mating clips can be placed around each re-bar and locked onto the beam member to prevent movement of the re-bars during a subsequent concrete pour. Two or more of these beam members can be connected together end-to-end using mating prongs and holes at opposite ends of each beam member.