CROSS-REFERENCE TO RELATED APPLICATION

This application claims the priority benefit of China application serial no. 201810039201.0, filed on Jan. 16, 2018. The entirety of the above-mentioned patent application is hereby incorporated by reference herein and made a part of this specification.

BACKGROUND OF THE INVENTION

Field of the Invention

The invention relates to a light source generating device, a projection apparatus and a light source generation method thereof, and particularly relates to a light source generating device, a projection apparatus and a light source generation method thereof able to improving brightness/chrominance.

Description of Related Art

Along with advance of electronic technology, electronic devices have become indispensable tools in people's daily life. Especially, today's electronic products provide a good quality interface, which is an important feature thereof.

In a projection apparatus, according to a known technology, a fixed number of light-emitting diodes (LEDs) is generally applied to generate a required light source, and through an inbuilt driver, the LEDs respectively are driven to generate a red light, a blue light and a green light and then respectively generate lights with different wavelengths. However, under the system framework of the know technology, in case of a requirement to enhance a brightness of one of the color lights, the LEDs are additionally configured to serve as an auxiliary light source. However, if a light-emitting brightness and a light-emitting time of the auxiliary light source are not accordance with a light-emitting brightness and a light-emitting time of the corresponding light source, an image display quality of the projection apparatus is influenced. Therefore, how to let the operations of the auxiliary light source and the corresponding light source are accordance with each other is an important subject for related technicians of the field.

The information disclosed in this “BACKGROUND OF THE INVENTION” section is only for enhancement of understanding of the background of the described technology and therefore it may contain information that does not form the prior art that is already known to a person of ordinary skill in the art. Further, the information disclosed in this “BACKGROUND OF THE INVENTION” section does not mean that one or more problems to be resolved by one or more embodiments of the invention were acknowledged by a person of ordinary skill in the art.

SUMMARY OF THE INVENTION

The invention is directed to a light source generating device, a projection apparatus and a light source generation method thereof, in which an auxiliary light source is applied to enhance a brightness of a generated light and/or enhance chrominance quality of the light.

Other objects and advantages of the invention can be further illustrated by the technical features broadly embodied and described as follows.

In order to achieve one or a portion of or all of the objects or other objects, an embodiment of the invention provides a light source generating device including a first light source, an auxiliary light source, a control device, a driver and a current command generator. The first light source generates a first light beam. The auxiliary light source generates an auxiliary light beam corresponding to the first light beam. The control device generates a first driving signal to drive the first light source. The driver is coupled to the control device to receive a gate control signal, and generates an auxiliary driving signal to drive the auxiliary light source according to the gate control signal and a current command. The current command generator is coupled to the control device to receive an indication signal, and generates the current command according to the indication signal. The indication signal corresponds to a driving current of the first light source.

In order to achieve one or a portion of or all of the objects or other objects, an embodiment of the invention provides a projection apparatus including the aforementioned light source generating device, a light valve and a projection lens. The light source generating device provides an illumination light beam, where the illumination light beam includes the aforementioned first light beam and the auxiliary light beam. The light valve is located on a transmission path of the illumination light beam, and converts the illumination light beam into an image light beam. The projection lens is located on a transmission path of the image light beam.

In order to achieve one or a portion of or all of the objects or other objects, an embodiment of the invention provides a light source generation method including: providing a first light source to generate a first light beam; providing an auxiliary light source to generate an auxiliary light beam corresponding to the first light beam; providing a control device to generate a first driving signal to drive the first light source; providing a driver to generate an auxiliary driving signal to drive the auxiliary light source according to a gate control signal and a current command; and providing a current command generator to receive an indication signal, and generate the current command according to the indication signal, wherein the indication signal corresponds to a driving current of the first light source.

According to the above description, in the embodiments of the invention, the auxiliary light source is provided to generate the auxiliary light corresponding to the first light beam, and the current command generator is provided to generate the current command according to the received indication signal, and the driver is controlled by the current command to generate the auxiliary driving signal to drive the auxiliary light source. In this way, a brightness of the auxiliary light beam provided by the auxiliary light source is produced according to a brightness of the first light beam, so as to enhance the brightness/chrominance of the light beam.

Other objectives, features and advantages of the present invention will be further understood from the further technological features disclosed by the embodiments of the present invention wherein there are shown and described preferred embodiments of this invention, simply by way of illustration of modes best suited to carry out the invention.

