摘要:
An air flotation bar, comprising:a header, at least one primary discharge slot for discharging fluid for supporting a web; a channel assembly containing:an infrared light source for emitting electromagnetic energy, a reflector for reflecting electromagnetic energy emitted by said infrared light source, and a lens having a web-facing surface; at least one aperture in said channel assembly for introducing fluid into said channel assembly for cooling said infrared light source and said reflector; and at least one secondary discharge slot configured to discharge said fluid introduced into said channel assembly parallel to said web-facing surface of said lens and to said web; wherein said at least one primary discharge slot and said at least one secondary discharge slot are configured such that 5% to 40% of total air is discharged via said at least one secondary discharge slot.
摘要:
An imaging apparatus and related method comprising a source that projects a beam of radiation in a first trajectory; a detector located a distance from the source and positioned to receive the beam of radiation in the first .trajectory; an imaging area between the source and the detector, the radiation beam from the source passing through a portion of the imaging area before it is received at the detector; a detector positioner that translates the detector to a second position in a first direction that is substantially normal to the first trajectory; and a beam positioner that alters the trajectory of the radiation beam to direct the beam onto the detector located at the second position. The radiation source can be an x-ray cone-beam source, and the detector can be a two-dimensional flat-panel detector array. The invention can be used to image objects larger than the field-of-view of the detector by translating the detector array to multiple positions, and obtaining images at each position, resulting in an effectively large field-of-view using only a single detector array having a relatively small size. A beam positioner permits the trajectory of the beam to follow the path of the translating detector, which permits safer and more efficient dose utilization, as generally only the region of the target object that is within the field-of-view of the detector at any given time will be exposed to potentially harmful radiation.
摘要:
A solid-state photodetector with variable spectral response that can produce a narrow or wide response spectrum of incident light. Some embodiments include a solid-state device structure that includes a first photodiode and a second photodiode that share a common anode region. Bias voltages applied to the first photodiode and/or the second photodiode may be used to control the thicknesses of depletion regions of the photodiodes and/or a common anode region to vary the spectral response of the photodetector. Thickness of the depletion regions and/or the common anode region may be controlled based on resistance between multiple contacts of the common anode region and/or capacitance of the depletion regions. Embodiments include control circuits and methods for determining spectral characteristics of incident light using the variable spectral response photodetector.
摘要:
An embodiment according to the present invention addresses reusability and alignment of content across channels in a multi-channel virtual assistant, by allowing users to define content on one channel and then have the content fully or partially translated for the other channels using a mix of pre-defined static rules, dynamic rules or machine learning. Content translation is provided based on communications channels, and content translation is performed from one to many formats, optionally in real time. Performing content translation using machine learning provides an advantage that as users work, content translation becomes more precise and covers more elements.
摘要:
A portable ultrasound system (10) for imaging a region of interest comprising: a handheld probe in which a transducer array (14) is mounted and a data processing system (16) within a data processor housing, the housing including an electronic device that is connected to the handheld probe with a cable interface (11), such that the data processing system receives a representation of the region of interest from the electronic device using a communication interface (12), the electronic device including a programmable beamforming device and a system controller connected to the beamforming device.
摘要:
A power amplifier has power detection capabilities that include a radio frequency (RF) power amplifier that has a gain stage that includes a gain stage input, a gain stage output, and a feedback loop coupled between an input and an output of the power amplifier. A detection circuit has a first detection circuit input electrically coupled to the gain stage input and has a detection circuit output. An amplitude control circuit and a phase control circuit are electrically coupled together in series between the gain stage output and a second detection circuit input. The amplitude control circuit and the phase control circuit produce a signal that is received by the second detection circuit input so that the detection circuit can detect a signal at the detection circuit output that is proportional to a the forward power output of the power amplifier and is insensitive to power amplifier output load mismatch.