摘要:
Systems and methods for identifying the level of media in a vessel with a sensing cable including an optical fiber sensor array aligned with a heating element disposed in the vessel. An excitation source is configured to propagate at least one heat pulse through the heating element along at least a portion of the sensing cable to affect an exchange of thermal energy between the heating element and the one or more media exposed to the sensing cable. An optical signal interrogator is adapted to receive a signal from each of a plurality of sensor locations and measure a temperature profile corresponding to the heat pulse at the sensor locations. A control unit is configured to identify a level of each of media by determining properties of the media exposed to the sensing cable at each of the sensor locations based on the temperature profile corresponding thereto.
摘要:
A first video signal is accessed, and represented in a first color space with a first color gamut, related to a first dynamic range. A second video signal is accessed, and represented in a second color space of a second color gamut, related to a second dynamic range. The first accessed video signal is converted to a video signal represented in the second color space. At least two color-related components of the converted video signal are mapped over the second dynamic range. The mapped video signal and the second accessed video signal are processed. Based on the processing, a difference is measured between the processed first and second video signals. A visual quality characteristic relates to a magnitude of the measured difference between the processed first and second video signals. The visual quality characteristic is assessed based, at least in part, on the measurement of the difference.
摘要:
An audio communication system, an audio transmitter and an audio receiver are described herein. In one aspect, the audio transmitter includes: An analog to digital converter configured to convert an analog audio signal into a digital audio signal; a digital compressor configured to compress the dynamic range of said digital audio signal; a digital modulator configured to modulate the compressed digital audio signal into a wireless communication signal; and the analog to digital converter, the digital compressor and the digital modulator are integrated in one integrated circuit. The described devices improve the compression and expansion device linearity, resulting in better match for the compressor at the transmitter and the expandor at the receiver.
摘要:
A stereoscopic digital imaging convergence device includes an image receiving module (100) for receiving a left image and a right image, an image selecting module (200) for selecting a left sub-image from the left image and a right sub-image from the right image, a display screen (300) for displaying the left sub-image and the right sub-image, a manual adjusting module (400) for receiving an adjusting command made by users after observing the image displayed on the display screen, an image adjusting module (500) for correspondingly adjusting the position of the left sub-image and the right sub-image selected by the image selecting module according to the adjusting command. Meanwhile, a convergence method of stereoscopic digital imaging is disclosed.
摘要:
The embodiments of the present disclosure disclose a battery system. The battery system at least comprises a battery pack, an inductor and two sets of switch branches. The battery system controls the inductor to store and release energy, so as to transfer energy between the battery pack and a battery cell or between two battery cells.
摘要:
A device for obtaining a RCC signal and related methods are described herein improves the reliability of the RCC signal reception and demodulation. In one aspect, a device configured to obtain a RCC signal includes: a receiving circuit to receive an analog AM RCC signal and to process said analog AM RCC signal to generate a digital AM RCC signal; and a demodulation circuit in connection with said receiving circuit, to demodulate said digital AM RCC signal to generate the RCC signal. In another aspect, a method for obtaining a RCC signal includes: processing a received analog AM RCC signal to generate a digital AM RCC signal; and demodulating said digital AM RCC signal to generate said RCC signal. Since the digital processing method is more reliable than the analog processing method, the reliability of RCC signal reception and demodulation are improved.
摘要:
An adjustable signal generating device and related method for generating the adjustable signal are described herein. The adjustable signal generating device includes: a voltage generator configured to continuously adjust an output voltage and output the voltage; a ΣΔ modulator configured to output a digital signal of pre-determined-cycle based on the output voltage and a reference voltage; a counter configured to count the number of a target level in the digital signal of a pre-determined number of cycles; and a digital signal generator configured to generate a target signal based on the number of the target level. The described method and device improve the accuracy of the generated signal while remaining the same feel of continuous adjustment.
摘要:
A first image stream has a first dynamic range and a first color space. First and the second image streams are received in a layered codec. The second image stream has a second dynamic range, which is higher than the first dynamic range. The first image stream is in the codec's base layer; the second image stream is in its enhancement layer. The first image stream is encoded to obtain an encoded image stream, which is decoded to obtain a decoded image stream. The decoded image stream is converted from the first non-linear or linear color space to a second, different color space to obtain a color converted image stream. A higher dynamic range image representation of the color converted image stream is generated to obtain a transformed image stream. Inverse tone mapping parameters are generated based on the transformed image stream and the second image stream.
摘要:
Video compression is performed under multiple distortion constraints. Video coding includes determining a first set of Lagrangian cost values for multiple coding modes using a first distortion metric, determining a second set of Lagrangian cost values for the multiple coding modes using a second distortion metric, and selecting one of the coding modes base first set of Lagrangian cost values and the second set of Lagrangian cost values to encode a pixel block using the selected coding mode. The distortion metrics can include information associated with video display characteristics such as screen display size, video processing performance, a distortion characteristic, a temporal characteristic, or a spatial characteristic. The distortion metrics can also include characteristics of multiple video displays, such as parameters for usage, importance, design, and the technology type of the video displays.
摘要:
This invention describes a method for preparing polymethoxymethylal. By this method, polymethoxymethylal is prepared by a catalytic reaction using methanol and trioxymethylene as reactants and using an ionic liquid as catalyst under a relatively moderate reaction condition. The catalyst of this invention has a high catalytic activity and a high conversion; the reaction process is simple, easy to be operated and has a strong controllability; the distribution of the products after reaction is superior and the utilization ratio of the raw materials is high.