Abstract: A projection device includes a casing structure and a protective mesh structure. The casing structure includes a casing, at least one position-limiting structure, and at least one stopper structure. At least one position-limiting groove is formed between a side cover of the casing and the position-limiting structure. The stopper structure is connected to the side cover and protrudes toward a containing space inside the casing. The protective mesh structure includes a protective mesh body and at least one protective mesh position-limiting portion. The protective mesh body is adapted to be installed in the containing space and at least partially limited in the position-limiting groove. The protective mesh position-limiting portion is connected to the protective mesh body and leans against the stopper structure of the casing structure, so as to prevent the protective mesh structure from being separated from the casing structure.

Abstract: A color wheel system and a control method of a color wheel are provided. The color wheel system includes a first driving circuit, a second driving circuit, and an image processing circuit. The first driving circuit and the second driving circuit are utilized for driving a first color wheel and a second color wheel, respectively. The image processing circuit is coupled to the first driving circuit and the second driving circuit. The image processing circuit is configured to provide first configuration information having address information of the first driving circuit to the first driving circuit and provide second configuration information having address information of the second driving circuit to the second driving circuit; provide a first adjustment signal to the first driving circuit and provide a second adjustment signal to the second driving circuit to respectively control rotation speeds of the first and second color wheels.

Abstract: A projection apparatus and a control method thereof are provided. The projection apparatus includes a processor, a sensor, and a projection module. When a command corresponding to a standby mode is received, the processor sets the projection apparatus to a first sub-standby mode. The sensor is enabled to sense whether there is a living object located in a sensing area outside the projection apparatus. The standby mode is maintained as the first sub-standby mode in response to sensing that the living object is not in the sensing area. The standby mode is set to be switched to a second sub-standby mode in response to sensing that the living object is in the sensing area. A maximum power consumption of the first sub-standby mode is less than a maximum power consumption of the second sub-standby mode. In the first and second sub-standby modes, the projection module is not enabled.

Abstract: A display system and a power-saving method thereof are provided. In a first standby mode, a control circuit of a display device detects whether a preset pin of a signal input port generates a voltage variation or maintains at a preset voltage value during a preset period. When the control circuit detects the voltage variation or the preset voltage value, the control circuit switches the display device to a second standby mode and generates an output signal according to an input signal received by the signal input port, and allows the output signal to be transmitted to the signal output port, or establishes a network connection according to the input signal. When the control circuit does not detect the voltage variation nor the preset voltage, the first standby mode is maintained by the control circuit.

Abstract: A method for adjusting a projection device and a projection system are provided. A projection device is driven to project an image on a projection target. An image-capturing device is driven to perform image capturing toward the projection target to obtain a captured image. The captured image includes a target object corresponding to the image. A projection position of the target object in the captured image is calculated based on the target object and the captured image. An output power of an illumination light source module of the projection device is adjusted based on the projection position and an ambient luminance.

Abstract: A control system, a control method, and a display apparatus included in a control system are provided. The control system includes a client apparatus and a display apparatus controlled by the client apparatus. The display apparatus is connected to a network and generates and displays an access object. The client apparatus is connected to the network, has a browser, captures the access object, and is connected to the display apparatus through the network according to information of the access object. The display apparatus provides an operation interface to the client apparatus through the network to display the operation interface in the browser of the client apparatus. The operation interface generates a control command based on operation performed therein by the client apparatus. The display apparatus receives the control command generated by the operation interface through the network, and performs an action according to the control command.

Abstract: A projection device and an operation method of the projection device are provided. The projection device includes a driver, a LED module, a current sensor, and a controller. The driver generates a driving current signal according to a control signal. The LED module provides an output light beam in response to the driving current signal. The current sensor senses a driving current flowing through the LED module to generate a sensing signal. The controller generates the control signal according to a current calibration parameter and a first control parameter, and determines whether a current value of the driving current flowing through the LED module is in a target driving current value range. When the current value of the driving current is not in the target drive current value range, the controller changes the first control parameter to adjust the control signal.

Abstract: A light source module comprises a first light source, a second light source, a first heat sink structure, and a second heat sink structure. The second light source disposed downstream of a main airflow flowing through the first light source module. The first heat sink structure has a plurality of first heat sink fins. The second heat sink structure has a plurality of second heat sink fins, wherein the first light source and the second light source are disposed along a first direction. The first heat sink structure and the second heat sink structure are disposed along the first direction, the first heat sink fins are arranged along the first direction, the second heat sink fins are arranged along a second direction, and the first direction is different from the second direction. A projection apparatus comprising the light source module is also provided.

Abstract: A light source module comprises a first light source, a second light source, a first heat sink structure, and a second heat sink structure. The second light source disposed downstream of a main airflow flowing through the first light source module. The first heat sink structure has a plurality of first heat sink fins. The second heat sink structure has a plurality of second heat sink fins, wherein the first light source and the second light source are disposed along a first direction. The first heat sink structure and the second heat sink structure are disposed along the first direction, the first heat sink fins are arranged along the first direction, the second heat sink fins are arranged along a second direction, and the first direction is different from the second direction. A projection apparatus comprising the light source module is also provided.