Abstract: A display apparatus and a compensation circuit are provided. The display apparatus includes a display screen, a sound reproduction device and a power supply circuit. The power supply circuit includes a rectifier circuit and a compensation circuit. The rectifier circuit is used to convert an alternating current to a direct current. The compensation circuit is used to compensate for a parasitic signal of a synchronous rectification MOSFET in the rectifier circuit, thereby reducing heat generated by the MOSFET.

Abstract: A display apparatus is disclosed. The display apparatus includes a display screen configured to display an image; at least one LED light bar configured to provide light to the display screen; and a power supply circuit configured to supply power to the display apparatus. The power supply circuit includes an LLC primary winding, a first secondary winding and a second LLC secondary winding, where the first LLC secondary winding is configured to convert a voltage of the LLC primary winding into a first voltage, the second LLC secondary winding is configured to convert the voltage of the LLC primary winding into a second voltage; and the power supply circuit is configured to adjust the first voltage output from the first LLC secondary winding into a third voltage, and supply power to the at least one LED light bar through a sum of the third voltage and the second voltage.

Abstract: A display apparatus with a power supply circuit is provided. The power supply circuit is connected with a light emitting diode (LED) drive circuit, a filter circuit and a feedback circuit in the display apparatus. The power supply circuit includes a fixed-voltage power supply element and a variable-voltage power supply element, and the fixed-voltage power supply element is superposed on the variable-voltage power supply element and configured to supply power to the LED drive circuit in a stepped manner; and a controller is configured to control a voltage of the variable-voltage power supply element according to a variation of the output voltage feedback from the feedback circuit.

Abstract: A display apparatus and a display control method are disclosed. The display apparatus includes a backlight module and a display panel. The backlight module comprises a controller, a plurality of power sources, and a plurality of lamp areas corresponding to the plurality of power sources. The plurality of power sources include a first power source for providing a positive power supply signal to the controller and driving a lamp area, and a second power source for driving a lamp area. The plurality of power sources are configured to output negative power supply signals and negative reference signals; the controller is configured to output a driving signal through negative voltage driving based on a control signal, the negative power supply signals and the negative reference signals.

Abstract: Disclosed are a display apparatus and a method for the display apparatus. The method includes: obtaining device information of an external device in connection with the display apparatus; parsing a variable frame rate mode supported by the external device from the device information by traversing a flag bit field in the device information; controlling the display to present an interactive menu, and receiving an interactive operation from a user through the interactive menu, wherein the interactive menu includes at least one option of variable frame rate modes; setting a display parameter of the display apparatus according to a first variable frame rate mode indicated by the interaction operation.

Abstract: A display apparatus with a power supply circuit is provided. The power supply circuit is connected with a light emitting diode (LED) drive circuit, a filter circuit and a feedback circuit in the display apparatus. The power supply circuit includes a fixed-voltage power supply element and a variable-voltage power supply element, and the fixed-voltage power supply element is superposed on the variable-voltage power supply element and configured to supply power to the LED drive circuit in a stepped manner; and a controller is configured to control a voltage of the variable-voltage power supply element according to a variation of the output voltage feedback from the feedback circuit.

Abstract: A display apparatus and a display control method are disclosed. The display apparatus includes a backlight module and a display panel. The backlight module comprises a controller, a plurality of power sources, and a plurality of lamp areas corresponding to the plurality of power sources. The plurality of power sources include a first power source for providing a positive power supply signal to the controller and driving a lamp area, and a second power source for driving a lamp area. The plurality of power sources are configured to output negative power supply signals and negative reference signals; the controller is configured to output a driving signal through negative voltage driving based on a control signal, the negative power supply signals and the negative reference signals.

Abstract: A display apparatus and a compensation circuit are provided. The display apparatus includes a display screen, a sound reproduction device and a power supply circuit. The power supply circuit includes a rectifier circuit and a compensation circuit. The rectifier circuit is used to convert an alternating current to a direct current. The compensation circuit is used to compensate for a parasitic signal of a synchronous rectification MOSFET in the rectifier circuit, thereby reducing heat generated by the MOSFET.

Abstract: One aspect of the present disclosure relates to a stabilized recombinant expression plasmid vector comprising a polynucleotide encoding an antitoxin gene which expresses a polypeptide that neutralizes a polypeptide toxic to a host cell, the toxic polypeptide being expressed by a toxin gene in the host cell, and a polynucleotide encoding a polypeptide expression product, and the stabilized recombinant expression plasmid vector is derived from a Hafnia alvei autonomously replicable backbone plasmid. Other aspects of the present disclosure relate to a transformant transformed with the stabilized recombinant expression plasmid vector disclosed herein, a method of producing biobased cadaverine using the transformant disclosed herein, and biobased cadaverine prepared by the method disclosed herein. Another aspect of the present disclosure relates to a polyamide formed using biobased cadaverine disclosed herein, and a composition thereof.

Abstract: A backlight drive voltage control device, comprising: a detecting unit connected to a controller, which detects the current states of the lamp strings of the divisions of the backlight sources of a liquid crystal screen, sends feedback signals to the controller; the controller which sends a voltage adjustment control signal to an AC to DC converter according to the feedback signals, and acquires the voltage adjustment amount of each lamp string according to the voltage adjustment control signal, selects lamp strings which voltage adjustment amounts are larger than the threshold, and sends the closing feedback control signal to the detecting unit; and the AC to DC converter which outputs corresponding voltages to the lamp strings according to the voltage adjustment control signal.

Abstract: One aspect of the present disclosure relates to a stabilized recombinant expression plasmid vector comprising a polynucleotide encoding an antitoxin gene which expresses a polypeptide that neutralizes a polypeptide toxic to a host cell, the toxic polypeptide being expressed by a toxin gene in the host cell, and a polynucleotide encoding a polypeptide expression product, and the stabilized recombinant expression plasmid vector is derived from a Hafnia alvei autonomously replicable backbone plasmid. Other aspects of the present disclosure relate to a transformant transformed with the stabilized recombinant expression plasmid vector disclosed herein, a method of producing biobased cadaverine using the transformant disclosed herein, and biobased cadaverine prepared by the method disclosed herein. Another aspect of the present disclosure relates to a polyamide formed using biobased cadaverine disclosed herein, and a composition thereof.

Abstract: One aspect of the present disclosure relates to a stabilized recombinant expression plasmid vector comprising a polynucleotide encoding an antitoxin gene which expresses a polypeptide that neutralizes a polypeptide toxic to a host cell, the toxic polypeptide being expressed by a toxin gene in the host cell, and a polynucleotide encoding a polypeptide expression product, and the stabilized recombinant expression plasmid vector is derived from a Hafnia alvei autonomously replicable backbone plasmid. Other aspects of the present disclosure relate to a transformant transformed with the stabilized recombinant expression plasmid vector disclosed herein, a method of producing biobased cadaverine using the transformant disclosed herein, and biobased cadaverine prepared by the method disclosed herein. Another aspect of the present disclosure relates to a polyamide formed using biobased cadaverine disclosed herein, and a composition thereof.

Abstract: An LED backlight source drive circuit, an LED backlight source and a liquid crystal display device are provided. LED backlight source drive circuit includes a voltage input terminal, a coupling module, and a rectifier module. The coupling module is connected to the voltage input terminal for receiving a current complying with a total working voltage of two power consumption modules from the voltage input terminal, and converting the current into a current complying with a working voltage of one power consumption module. The rectifier module is connected to the coupling module for inputting the current complying with the working voltage of one power consumption module into two serially-connected power consumption modules, thereby supplying power to the power consumption modules. The LED backlight source and the liquid crystal display device include two power consumption modules and the above LED backlight source drive circuit.

Abstract: One aspect of the present disclosure relates to a stabilized recombinant expression plasmid vector comprising a polynucleotide encoding an antitoxin gene which expresses a polypeptide that neutralizes a polypeptide toxic to a host cell, the toxic polypeptide being expressed by a toxin gene in the host cell, and a polynucleotide encoding a polypeptide expression product, and the stabilized recombinant expression plasmid vector is derived from a Hafnia alvei autonomously replicable backbone plasmid. Other aspects of the present disclosure relate to a transformant transformed with the stabilized recombinant expression plasmid vector disclosed herein, a method of producing biobased cadaverine using the transformant disclosed herein, and biobased cadaverine prepared by the method disclosed herein. Another aspect of the present disclosure relates to a polyamide formed using biobased cadaverine disclosed herein, and a composition thereof.

Abstract: A backlight drive voltage control device, comprising: a detecting unit connected to a controller, which detects the current states of the lamp strings of the divisions of the backlight sources of a liquid crystal screen, sends feedback signals to the controller; the controller which sends a voltage adjustment control signal to an AC to DC converter according to the feedback signals, and acquires the voltage adjustment amount of each lamp string according to the voltage adjustment control signal, selects lamp strings which voltage adjustment amounts are larger than the threshold, and sends the closing feedback control signal to the detecting unit; and the AC to DC converter which outputs corresponding voltages to the lamp strings according to the voltage adjustment control signal.

Abstract: An LED backlight source drive circuit, an LED backlight source and a liquid crystal display device are provided. LED backlight source drive circuit includes a voltage input terminal, a coupling module, and a rectifier module. The coupling module is connected to the voltage input terminal for receiving a current complying with a total working voltage of two power consumption modules from the voltage input terminal, and converting the current into a current complying with a working voltage of one power consumption module. The rectifier module is connected to the coupling module for inputting the current complying with the working voltage of one power consumption module into two serially-connected power consumption modules, thereby supplying power to the power consumption modules. The LED backlight source and the liquid crystal display device include two power consumption modules and the above LED backlight source drive circuit.