Abstract: A clean method is configured for a surveillance camera. The surveillance camera comprises a mounting bracket and a main body which is rotatable relative to the mounting bracket so that the main body is rotatable around at least one rotation axis. The clean method includes the following steps. Drive the main body to rotate in a first path from a prepared position to an end of the first path, which is away from the prepared position, and to strike the mounting bracket to get the main body cleaned. Correct a relative position relationship between the main body and the mounting bracket.

Abstract: A light emitting device includes a casing, a lighting module, and a lens module. The lighting module is disposed in the casing for providing light and includes first and second light sources. The lens module faces the lighting module and includes a first lens aligned with the first light source, a second lens aligned with the second light source, a sliding frame, and a driving motor. The sliding frame is fixed to the first lens and has a thread portion. The driving motor has a screw rod for engaging with the thread portion, to make the sliding frame movable along the screw rod. The driving motor rotates the screw rod to make the thread portion drive the first and second lenses close to or away from the first and second light sources. Accordingly, the present invention reduces the manufacturing cost of the light emitting device and simplifies its mechanical design.

Abstract: A clean method is configured for a surveillance camera. The surveillance camera comprises a mounting bracket and a main body which is rotatable relative to the mounting bracket so that the main body is rotatable around at least one rotation axis. The clean method includes the following steps. Drive the main body to rotate in a first path from a prepared position to an end of the first path, which is away from the prepared position, and to strike the mounting bracket to get the main body cleaned. Correct a relative position relationship between the main body and the mounting bracket.

Abstract: A light emitting device includes a casing, a lighting module, and a lens module. The lighting module is disposed in the casing for providing light and includes first and second light sources. The lens module faces the lighting module and includes a first lens aligned with the first light source, a second lens aligned with the second light source, a sliding frame, and a driving motor. The sliding frame is fixed to the first lens and has a thread portion. The driving motor has a screw rod for engaging with the thread portion, to make the sliding frame movable along the screw rod. The driving motor rotates the screw rod to make the thread portion drive the first and second lenses close to or away from the first and second light sources. Accordingly, the present invention reduces the manufacturing cost of the light emitting device and simplifies its mechanical design.

Abstract: An image surveillance device includes a casing, a lens module, a heater, a heat conduction sheet and a fan module. The lens module is disposed in the casing for capturing images. The heater is used for generating thermal energy. The heat conduction sheet is attached to the lens module and the heater for conducting the thermal energy to the lens module. The fan module is disposed on the heater for guiding airflow to cause heat convection in the casing. Accordingly, the present invention can solve the prior art problem that the thermal energy is accumulated on the heater, so as to greatly improve the thermal energy efficiency of the image surveillance device.

Abstract: A lens device includes a circuit board, a lens module, a sensor for receiving images captured by the lens module, and a positioning pad. The lens module has an optical axis. The sensor is disposed on the circuit board and has a central axis and first and second reference surfaces perpendicular to each other. The positioning pad is disposed on the lens module and has a hollow structure for containing the sensor. The hollow structure has first and second abutting sides and first and second biasing elastic arms. The first and second biasing elastic arms are opposite to the first and second abutting sides respectively for biasing the sensor to a position where the first and second reference surfaces abut against the first and second abutting sides respectively when the sensor is contained in the hollow structure, so as to make the central axis aligned with the optical axis.

Abstract: A monitoring apparatus includes a main body, a mounting plate, and a fixing plate. The mounting plate is connected to the main body and has a first bending rib structure protrusively formed thereon. The fixing plate is fixed to a mounting target and is disposed opposite to the mounting plate. The fixing plate has a first opening structure formed thereon corresponding to the first bending rib structure and a second bending rib structure laterally extending from the first opening structure. When the mounting plate is connected to the fixing plate to make the first bending rib structure pass through the first opening structure, the first bending rib structure rotates with rotation of the mounting plate relative to the fixing plate to be engaged with the second bending rib structure, so as to fix the mounting plate to the fixing plate.

Abstract: Each of a plurality of serially-connected data transmission apparatuses comprises a first shift register, a fault-detecting circuit and a second shift register. The second shift register is configured to receive a second serial input signal and generate an output signal according to a clock signal. The fault-detecting circuit is configured to select one of the outputs of the second shift register and a first serial input signal based on the fault-detecting result. The first shift register is configured to receive the output of the fault-detecting circuit and generate an output according to the clock signal. The second serial input signal is equal to the first serial input signal of at least one preceding stage, and the first serial input signal is equal to the output serial signal of the preceding stage. One purpose of the present invention is to maintain continuous transmission of the serial data when a failure of the serially-connected data transmission apparatus occurs.

Abstract: A method for driving a plurality of LEDs comprises the steps of: driving the plurality of LEDs according to a series of display signals; synchronously detecting the plurality of LEDs in a display mode for obtaining fault information; and serially outputting the fault information.

Abstract: The present invention relates to a light emitting diode (LED) driving system and a circuit thereof. The LED driving circuit is configured to control a direct voltage converter configured to generate a regulated output voltage to an input terminal of an LED array. The LED array has a plurality of LED sets. The LED driving circuit includes a plurality of current sources, a comparison circuit and a current setup circuit. The plurality of current sources are connected to a plurality of output terminals of the LED array, and are configured to provide a current flowing through the plurality of LED sets. The comparison circuit is connected to a plurality of output terminals of the LED array, and is configured to generate an analog or digital feedback signal representing a status of the supply voltage for the LED array. The current setup circuit is configured to set up the initial current value of the current sources.

Abstract: A lighting apparatus receives a regulated AC line voltage as an input voltage and comprises a light emitting diode array and a driving circuit. The light emitting diode array is composed of at least one light emitting diode set connected in parallel. The driving circuit has a plurality of outputs corresponding to the light emitting diode sets, and each output has a predetermined value for controlling the brightness of the light emitting diode set. Each light emitting diode set is conducted automatically and in sequence for a fixed time interval based on the output of the driving circuit and the amplitude of the regulated AC line voltage, and is turned off based on the predetermined signal of the driving circuit.

Abstract: Each of a plurality of serially-connected data transmission apparatuses comprises a first shift register, a fault-detecting circuit and a second shift register. The second shift register is configured to receive a second serial input signal and generate an output signal according to a clock signal. The fault-detecting circuit is configured to select one of the outputs of the second shift register and a first serial input signal based on the fault-detecting result. The first shift register is configured to receive the output of the fault-detecting circuit and generate an output according to the clock signal. The second serial input signal is equal to the first serial input signal of at least one preceding stage, and the first serial input signal is equal to the output serial signal of the preceding stage. One purpose of the present invention is to maintain continuous transmission of the serial data when a failure of the serially-connected data transmission apparatus occurs.

Abstract: A method for driving a plurality of LEDs comprises the steps of: driving the plurality of LEDs according to a series of display signals; synchronously detecting the plurality of LEDs in a display mode for obtaining fault information; and serially outputting the fault information.