Hisense Laser Display Co., Ltd.

Kai Wu

Zhen Wang

Xu Chen

Jichen Xiao

Rongrong Cui

Dabo Guo

Chao Wu

Qian Liang

Lingyue Cui

Longmin Li

A laser projection apparatus is provided and includes an optical modulating assembly, a vibrating device, a projection lens, and a circuit architecture. The circuit architecture includes an image processing sub-circuit and a display driving sub-circuit. The image processing sub-circuit is configured to perform frame division on image data of an image to be displayed to obtain image signals of a plurality of frames of sub-images to generate a frame division control signal. The display driving sub-circuit is configured to output the image signals of the plurality of frames of sub-images to the optical modulating assembly and output a vibration instruction to the vibrating device based on the output timing of the image signals of the plurality of frames of sub-images, so as to control the vibrating device to perform vibrations, so that the projection beams are output through the vibrating device.

Laser projection apparatus, projection display system, and projection display method

A laser projection apparatus includes a display control circuit, a laser source, a laser source driving circuit, and a light modulation device. The display control circuit includes an algorithm processor and a control processor. The algorithm processor is configured to: determine a gain value α of each frame of image according to a gray scale value of each frame of image, and transmit N current control signals, M enable signals, and image display data to the control processor. The control processor is configured to: transmit the N current control signals and the M enable signals to the laser source driving circuit; and transmit the image display data to the light modulation device. The light modulation device is configured to modulate beams emitted by the laser source according to the image display data to generate image beams.

Laser projection apparatus

A laser projection apparatus includes a laser source, an optical engine, a projection lens, and a circuit system architecture. The circuit system architecture is configured to control the laser source to emit laser beams of three primary colors. The circuit system structure includes: a display control circuit, a first laser chip driving circuit, a second laser chip driving circuit, and a third laser chip driving circuit. The display control circuit is configured to generate three PWM signals and three enable signals. The laser chip driving circuit is electrically connected to the display control circuit, and is configured to receive a PWM signal of a corresponding color and an enable signal of the corresponding color, so as to drive a laser chip of the corresponding color to emit laser beams of the corresponding color.

Laser projection device

A laser projection apparatus includes a display control circuit, a laser source, and a laser source driving circuit connected to the display control circuit and the laser source. The display control circuit is configured to generate N current control signals corresponding to each of a plurality of frames of images, and select an effective current control signal from the N current control signals. The N current control signals include current control signals that are in one-to-one correspondence with M primary colors of each frame of image, and a hybrid-color current control signal, N is an integer greater than 2, and M is a positive integer. The laser source driving circuit is configured to control the laser source to emit light according to the effective current control signal. Magnitudes of effective current control signals corresponding to at least two of the plurality of frames of images are different.

Laser projection apparatus having a display control circuit

A laser projection device includes: a laser light source, including three laser assemblies emitting lasers of different colors; a laser light source driving unit, including: a display control circuit; three power supply driving assemblies connected to the three laser assemblies; and three laser driving assemblies connected to three power supply driving assemblies, where the display control circuit is configured to transmit an enabling signal corresponding to each laser assembly to a corresponding power supply driving assembly when transmitting a PWM signal corresponding to the each laser assembly; each power supply driving assembly is configured to load a driving voltage to a corresponding laser driving assembly according to voltage of a received PWM signal, when a received enabling signal is at active potential; and each laser driving assembly is configured to drive a corresponding laser assembly to emit light according to the driving voltage.

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Qindao, China

Kai Wu