991results about How to "Reduce gain" patented technology

A video input processor is disclosed. The processor includes: an imaging signal-generating portion configured to image a subject and producing first imaging signals containing visible light components and a second imaging signal containing near-infrared light components; a gain adjustment portion configured to adjustably set a maximum gain value according to a relative magnitude between the visible light components and the near-infrared light components and adjust a gain for the first imaging signals at the set maximum gain value; and a noise reduction portion configured to reduce noises in the first imaging signals after the gain has been adjusted.

A safety indicator monitors environment conditions detrimental to humans e.g., hazardous gases, air pollutants, low oxygen, radiation levels of EMF or RF and microwave, temperature, humidity and air pressure retaining a three month history to upload to a PC via infra red data interface or phone link. Contaminants are analyzed and compared to stored profiles to determine its classification and notify user of an adversity by stored voice messages from, via alarm tones and associated flashing LED, via vibrator for silent operation or via LCD. Environmental radiation sources are monitored and auto-scaled. Instantaneous radiation exposure level and exposure duration data are stored for later readout as a detector and dosimeter. Scans for EMF allow detection with auto scaling of radiation levels and exposure durations are stored for subsequent readout. Electronic bugs can be found with a high sensitivity EMF range setting. Ambient temperature measurements or humidity and barometric pressure can be made over time to predict weather changes. A PCS RF link provides wireless remote communications in a first responder military use by upload of alarm conditions, field measurements and with download of command instructions. The link supports reception of telemetry data for real time remote monitoring of personnel via the wrist band for blood pressure, temperature, pulse rate and blood oxygen levels are transmitted. Commercial uses include remote environmental data collection and employee assignment tasking. GPS locates personnel and reporting coordinates associated with alarm occurrences and associated environmental measurements.

An apparatus for use as a light assembly in remote visual inspection devices is provided. The light assembly may consist of a laser diode coupled to a fiber optic bundle that transmits collimated laser light onto a wavelength converter located in the distal end of the remote video inspection system. Wavelength converters consisting of phosphorescent materials can be used to convert collimated laser light into white light for inspection illumination purposes.

A personal audio playback device having gain control responsive to environmental sounds provides for improved enjoyment of program material played back through headphones, while further providing features for personal safety and communications with others. A microphone is incorporated on the surface of the playback device, which includes an audio output connection for headphones and internal storage for audio program material. The entire device may be incorporated within the headphones, or the headphones may connect through a connector on the housing of the device. The gain, type or position of the program material is controlled in conformity with a detected characteristic of ambient sounds received by the microphone, which may be the amplitude of the signals in one or more frequency bands, or a particular type of sound, such as speech or vehicular sounds. Multiple modes are selectable for processing the audio, selecting program material type and/or re-positioning the program material.

The invention discloses a production method for a tea vinegar drink, and relates to the technical field of processing of drinks. The tea vinegar drink is mainly prepared from tea, momordica grosvenori, white sugar, mountain spring water and acetic acid bacterium. The production method comprises the following steps: after the momordica grosvenori is smashed, the tea, the momordica grosvenori, the white sugar, the mountain spring water and the acetic acid bacterium are respectively weighed, and the weighed raw materials are placed in a pot and boiled to obtain an extract liquid; an acetic acid bacterium strain accounting for 2-3 percent of the total weight of the raw materials is -inoculated, covered and fermented, the product temperature is controlled to be 16-28 DEG C, and the fermentation lasts 10-25 days; acid adjustment is performed on a fermented and obtained feed liquid, the total acid content of the feed liquid is controlled within a range of 0.3-1 g/100ml, and the soluble solid is controlled within a range of 3-5 percent; the tea vinegar drink is obtained via vacuum and sterile filling after the liquid is sterilized. The invention discloses the tea vinegar drink integrating multiple functions of nutrition and health care, vegetal syrup is used as an acetic acid bacteria culture medium for fermentation, the produced tea vinegar drink contains various spicy substances and nutrient ingredients of the tea, the momordica grosvenori and acetate acid, and is good in flavor and high in quality.

An apparatus for varying the gain of a fiber optic sensor that non-intrusively senses the strain response of a pipe is provided. The apparatus includes a circumferential strain attenuator that has an annular land portion that mechanically couples the attenuator to the pipe. An annular web extends coaxially from the land portion and has a reduced cross sectional area relative to the land, and an annular mandrel portion extends coaxially from the web portion and forms a gap between the pipe and the mandrel. The fiber optic sensor is wound on the circumferential strain attenuator. The web and mandrel cooperate to reduce the strain response of the fiber optic sensor relative to the strain response of the pipe.

A system for producing frequency converted light includes a first seed laser operable to provide a first laser signal and a second seed laser operable to provide a second laser signal. The system also includes an optical combiner optically coupled to the first seed laser and the second seed laser. The optical combiner is operative to combine the first laser signal and the second laser signal into a combined laser signal. The system further includes a power amplifier optically coupled to the optical combiner. An intensity of both the first laser signal and the second laser signal are increased by the power amplifier. The system additionally includes a harmonic converter optically coupled to the power amplifier.

The invention relates to a water thermal-insulation paint used in constructions, comprising the following raw materials: ceramic hollow micro bead, emulsion, latent solvent, filler, pigment, wetting agent, dispersing agent, thickening agent, antifoam agent, germicide and water. The ceramic hollow micro bead, which is added in the paint, can form a paper-thin enclosed hollow cavity layer when coated on the surface of a building, thereby effectively preventing thermal conduction and thermal radiation.

A method and apparatus for providing ventilatory assistance to a spontaneously breathing patient An error signal (56) is computed that is the difference between a function of respiratory airflow (54) over a period of time and a target value (52). Using a servo loop, air is delivered to the patient at a pressure that is a function of the error signal, the phase of the current breathing cycle, and a loop gain that varies depending on the magnitude of the error signal. The loop gain increases with the magnitude of the error signal, and the gain is greater for error signals below a ventilation target than for error signals above the ventilation target value. The target value (52) is an alveolar ventilation that takes into account the patient's physiologic dead space.

A system and method for determining the position of an aircraft. An aircraft signal is received by a first antenna and a second antenna, the first antenna being at a known baseline distance from the second antenna. A processor is used to calculate the time difference of arrival range between the second antenna and the aircraft using a common time reference signal. The position of the aircraft is determined by a position determinator based upon the baseline distance between the first and second antennas, the range between the first antenna and the aircraft, and the time difference of arrival range between the second antenna and the aircraft.

The invention discloses an LLC resonance type three-port DC-DC converter and a control method thereof. The converter is composed of a primary side circuit, a secondary side circuit, a transformer and LLC resonant network. The primary side circuit is composed of a full-bridge unit integrating two paths of two-way buck-boost circuits connected in parallel in a staggered mode. The secondary side circuit is composed of a rectifier circuit. The transformer and LLC resonant network is composed of a high-frequency transformer, a resonant inductor Lr, an excitation inductor Lm and a resonant capacitor Cr. By adjusting the duty ratios and frequencies of power switch tubes of the primary side circuit, two-way energy transmission and output one-way energy transmission between two ports of the primary side can be effectively controlled at the same time. According to the converter and the method, a non-isolation type two-way buck-boost converter is integrated with an isolation type full-bridge LLC resonant converter, so that multiplexing of the primary side switch tubes is achieved, the number of the switch tubes is reduced, cost is reduced, and power density and reliability are improved. The converter is suitable for renewable energy source power generation, hybrid electric vehicles, fuel cell vehicles, hybrid energy storage systems and other systems.

The invention provides a data acquisition system and method for detecting ions in a mass spectrometer, comprising: a detection system for detecting ions comprising two or more detectors for outputting two or more detection signals in separate channels in response to ions arriving at the detection system; and a data processing system for receiving and processing the detection signals in separate channels of the data processing system and for merging the processed detection signals to construct a mass spectrum; wherein the processing in separate channels comprises removing noise from the detection signals by applying a threshold to the detection signals. The detection signals are preferably produced in response to the same ions, the signals being shifted in time relative to each other. The invention is suitable for a TOF mass spectrometer.