40results about How to "Reduce detection bias" patented technology

A display apparatus provides an improved control accuracy of the brightness and the chromaticity. The liquid crystal display apparatus has a liquid crystal panel and a backlight unit for applying diffused light to the liquid crystal panel in a form of a sheet. The backlight unit has a light source, a light guide plate for converting light emitted from the light source into a sheetlike beam of light, an optical sheet for converting light emitted from the light guide plate into condensed light or diffused light, and an optical sensor unit for detecting a portion of light from the light guide plate and converting the detected light into an electric signal. The backlight unit also has a case housing the light source, the light guide plate, the optical sheet, and the optical sensor unit. The optical sensor unit is fixed to an area that is inside of the light guide plate and exerts no influence on display.

There is provided an optical disc recording / reproducing apparatus which can reduce the chip size using the high-miniaturization process and can enhance the detection accuracy. A signal which is obtained by amplitude-adjusting a header region in a reproduced signal detected by an optical pickup (1) is digitized, and peak detection or bottom detection from the reproduced signal in each of a first section and a second section in the header region is performed by detection circuits (9) to (12), respectively. Then, amplitude data in the first section and the second section are obtained by subtracters (13) and (14) from the detected values in the respective detection circuits. A difference in amplitude between the first section and the second section in the header region is obtained by a subtracter (15) based on the amplitude data, and the amplitude difference is outputted as an off-track error signal. The respective detection circuits (9) to (12) perform detection operations in the first and second sections, and hold the detection operations in the sections other than the first and second sections.

The invention provides a refrigerant leakage detecting method and system and an air conditioner. The method includes the steps that the first indoor air inlet temperature of an inlet of an indoor heat exchanger of the air conditioner and the first indoor heat exchanger temperature of the indoor heat exchanger are detected after a compressor of the air conditioner runs for a first set period of time; when the first difference between the first indoor air inlet temperature and the first indoor heat exchanger temperature is smaller than or equal to a first preset threshold, the second indoor air inlet temperature of the inlet of the indoor heat exchanger and the second indoor heat exchanger temperature of the indoor heat exchanger are detected after the compressor runs for a second preset period of time; when the second difference between the second indoor air inlet temperature and the second indoor heat exchanger temperature is smaller than or equal to the first preset threshold, whether variation of the second difference relative to the first difference is smaller than or equal to a second preset threshold or not is judged, and if yes, refrigerant leakage is judged to happen to the air conditioner. According to the technical scheme, refrigerant leakage of the air conditioner can be accurately detected in time.

The invention provides a power supply device. Detection of an AC input power is executed via a control chip in the power supply device without additionally arranging an external independent detection circuit so that design cost can be reduced and extra standby loss cannot be generated. Besides, with a mode that detection of the AC input power is executed by adopting the control chip, detection deviation can be effectively reduced so that a load system can be notified within permitted and accurate time, i.e. preset time. Furthermore, generation of indicating signals can be determined and adjusted by the control chip due to application requirements of the load system so as to notify the length of the preset time of the load system, and thus the power supply device can be generally applied to different types of load systems with timing control requirements.

The present invention relates to a pressure connected state detection circuit of induction type heating cooker. Said device is formed from Hall integrated circuit, Hall integrated circuit input power supply control portion, pressure connected state detection portion and microcomputer. The Hall integrated circuit after which is switched on can be worked to detect the pressure movement of cooke cover, and the Hall integrated circuit input powder supply control portion can be used for controlling switching-on and switching-off of the supply power source of Hall integrated circuit, and the pressure connected state detection portion can be used for controlling output voltage according to the power supply of Hall integrated circuit, and the microcomputer is used for controlling Hall integrated circuit input power supply control portion and can be used to judge the Hall integrated circuit is normally worked or not.

The invention discloses a kit and a detection method for accurately and quantitatively detecting astrovirus and particularly relates to a group of primers and probes for detecting the astrovirus as well as the kit containing the primers and the probes and a detection method of the astrovirus, wherein the primers and the probes have nucleotide sequences shown in SEQ ID No. 1 to SEQ ID No. 3 in a sequence table. The invention provides the detection method for accurately and quantitatively detecting the astrovirus by using a droplet digital PCR (Polymerase Chain Reaction) technology; the method does not need to rely on certified reference materials or other standard substances, and has higher accuracy, sensitivity and repeatability, and is easy to standardize.

The invention discloses a reagent kit and a method for accurately and quantitatively detecting type-II norovirus, and particularly relates to a group of primers and probes for detecting type-II norovirus, a reagent kit with the primers and the probes and a method implemented by the aid of the reagent kit. The primers and the probes are provided with nucleotide sequences shown from SEQ ID No.1 to SEQ ID No.3 in a sequence table. The reagent kit and the method have the advantages that the method can be used for accurately and quantitatively detecting the type-II norovirus by the aid of microdroplet digital PCR (polymerase chain reaction) technologies and is high in sensitivity, accuracy and repeatability and easy to standardize.

The invention relates to a detection platform for artificial intelligence with installation and fixation, including a main body and a bracket. The top left and right sides of the main body are connected with fixed posts, and the main body and the fixed post are fixedly connected. The top of the fixed post A bolt cap is installed, and the inner inner wall of the top of the fixed column is closely attached to the inner inner wall of the bolt cap. The middle part of the top of the main body is provided with a secondary detection plate, and the center line between the main body and the secondary detection plate intersects. The beneficial effect of the present invention is: through the movement of the guide rod between the bracket and the rotating column, the guide rod can be rotated and fixed on the right side of the secondary detection board, and the secondary detection board can be fixed on the main body, so that the The first-level detection board is snapped on the second-level detection board, and it can classify and detect artificial intelligence products, so that it can perform fixed detection on the second-level detection board and the first-level detection board, and can classify and fix artificial intelligence products .

The invention discloses a kit for accurately and quantitatively detecting a transgenic maize line T25 and a detection method thereof. The invention in particular relates to a group of primers and probes which are used for detecting the transgenic maize line T25 as well as a kit containing the primers and probes, wherein the primers and probes have nucleotide sequences shown in SEQ ID No.1 to SEQ ID No.6 in a sequence table. The invention also provides a detection method for accurately and quantitatively detecting the transgenic maize line T25 by utilizing a dual microdroplet type digital PCR technology. The detection method provided by the invention is independent of a certified reference material or other standard substances, has higher accuracy, sensitivity and repeatability and is easy to be standardized.