Abstract: The present application discloses a signal channel switching method, a display terminal and a computer-readable storage medium. The signal channel switching method includes the following operations: establishing a data connection with a first external device connected with a first hot plug pin; obtaining a first voltage detected by a second hot plug pin, and judging whether the first voltage conforms to a preset rule; if the first voltage conforms to the preset rule, obtaining information of a second external device connected with the second hot plug pin; cutting off the data connection with the first external device and establishing a data connection with the second external device according to the information of the second external device.

Abstract: The present disclosure relates to a method and a system for controlling play of a TV set, a control terminal and a storage medium, and discloses that a fire safety escape route is played on the TV set when a user stays at a hotel for the first time and information of related service scenes of the hotel is shown at the same time, thereby improving the safety awareness of the user, enabling the user to conveniently use the related service of the hotel and bringing convenience to the user.

Abstract: The present application discloses a signal channel switching method, a display terminal and a computer-readable storage medium. The signal channel switching method includes the following operations: establishing a data connection with a first external device connected with a first hot plug pin; obtaining a first voltage detected by a second hot plug pin, and judging whether the first voltage conforms to a preset rule; if the first voltage conforms to the preset rule, obtaining information of a second external device connected with the second hot plug pin; cutting off the data connection with the first external device and establishing a data connection with the second external device according to the information of the second external device.

Abstract: A linear constant-current LED light circuit that can automatically adapt to a change of an input voltage according to changes of a quantity of dedicated constant-current circuits and a quantity of LEDs in series, so that a total voltage of the LEDs is always close to the input voltage, thereby reducing a voltage drop of a constant-current transistor and reducing power loss of the constant-current transistor, so as to achieve energy saving. The dedicated constant-current circuits make the LEDs work in a rated current range, without generating overcurrent to cause damage, and a progressive decrease of a resistance of n stage dedicated constant-current circuits is set to implement a progressive increase of currents of the n stage dedicated constant-current circuits, so that a working current of the circuit can follow the input voltage. Therefore, the circuit has a relatively high power factor, relatively low harmonic distortion, and good electrical performance.

Abstract: A linear constant-current LED light circuit that can automatically adapt to a change of an input voltage according to changes of a quantity of dedicated constant-current circuits and a quantity of LEDs in series, so that a total voltage of the LEDs is always close to the input voltage, thereby reducing a voltage drop of a constant-current transistor and reducing power loss of the constant-current transistor, so as to achieve energy saving. The dedicated constant-current circuits make the LEDs work in a rated current range, without generating overcurrent to cause damage, and a progressive decrease of a resistance of n stage dedicated constant-current circuits is set to implement a progressive increase of currents of the n stage dedicated constant-current circuits, so that a working current of the circuit can follow the input voltage. Therefore, the circuit has a relatively high power factor, relatively low harmonic distortion, and good electrical performance.

Abstract: The present invention discloses an adaptive LED light, comprising: a DC power supply, a first LED assembly, a second LED assembly, a first current-controlled switch, a second current-controlled switch and a first diode, wherein the first LED assembly comprises a first LED light, a first constant-current circuit and a first electrolytic capacitor; the second LED assembly comprises a second LED light, a second constant-current circuit and a second electrolytic capacitor; an input terminal of the first LED assembly is connected to a positive output terminal of the DC power supply and one terminal of the first current-controlled switch, respectively; an anode of the first diode is connected to an output terminal of the first LED assembly and one terminal of the second current-controlled switch, respectively, while a cathode thereof is connected to the other terminal of the first current-controlled switch and an input terminal of the second LED assembly, respectively; and, the other terminal of the second current-

Abstract: The invention relates to a technical field of light emitting diodes (LEDs), in particular to a self-adaptive drive circuit and an LED lamp with the same. The LED lamp comprises a plurality of series LED lamp strings, and each LED lamp string comprises at least one series LED lamp bead; and the self-adaptive drive circuit comprises a rectifying unit, a current limiting unit, a voltage detection and connectivity control unit and at least one controllable switch unit. According to the self-adaptive drive circuit and the LED lamp with the same, the LEDs can be driven normally in an extremely simple drive mode, which can work without using complex constant current drive circuit and electrolytic capacitor that is life limiting. At the same time, the stroboflash phenomenon is eliminated, the power factor is improved, harmonic distortion is reduced, electromagnetic interference is eliminated, and the cost is reduced.

Abstract: The invention relates to a technical field of light emitting diodes (LEDs), in particular to a self-adaptive drive circuit and an LED lamp with the same. The LED lamp comprises a plurality of series LED lamp strings, and each LED lamp string comprises at least one series LED lamp bead; and the self-adaptive drive circuit comprises a rectifying unit, a current limiting unit, a voltage detection and connectivity control unit and at least one controllable switch unit. According to the self-adaptive drive circuit and the LED lamp with the same, the LEDs can be driven normally in an extremely simple drive mode, which can work without using complex constant current drive circuit and electrolytic capacitor that is life limiting. At the same time, the stroboflash phenomenon is eliminated, the power factor is improved, harmonic distortion is reduced, electromagnetic interference is eliminated, and the cost is reduced.