Chung Yuan Christian University

Ting-Lan Lin

Shih-Lun Chen

Wen-Xuan Zhao

Kun-Hsien Tung

Ying Chen

Szu-Ching Pan

Differing from the fact that the amount of register units and adder units arranged in conventional moving average filter must be increased for processing more number of reference input signals, the present invention particularly discloses a moving average low-pass filtering device. The moving average low-pass filtering device comprises a register unit and a filtering and processing unit, and is able to use identical circuit architecture to successfully treat reference input signals with a filtering process even if the number of the reference input signals is alternatively increased. Moreover, after finishing a verification experiment by a simulator, simulation results have proved that, this novel moving average low-pass filtering device still can use identical circuit architecture to complete the filtering process under nearly the same calculation efficiency even though the number of the reference input signals is alternatively increased.

Moving average low-pass filtering device and method

The present invention mainly discloses a laser spot detecting and locating system for use in a computer projection system, mainly comprising: a video recorder and a detecting module. The video recorder is used to capture a projected image provided on a projection screen by a projector and a laser spot provided on the projection screen by a laser pointer. Thus, during commercial presentation or classroom teaching, presentation processes and contents of a presenter and moving traces of the laser spot would be simultaneously recorded by the video recorder. Furthermore, by immediately converting the coordinate of the laser spot to a screen coordinate in a displayed image of a host computer, a mouse cursor can be simultaneously moved to the corresponding screen coordinate with the motion of the laser spot.

Laser spot detecting and locating system and method thereof

An automatic backlight control system and a method thereof, for receiving and analyzing an image dataset to control the backlight module of a display device are provided. Firstly, a first backlight intensity value generated by using the analysis and control module to analyze a first frame data is stored in the storage module. Then, the analysis and control module generates a translation vector value according to a first vector component and a second vector component of an equivalent translation vector corresponding to a second frame data of the image dataset. When the translation vector value is smaller than the threshold value, the selection module transmits the first backlight intensity value to the backlight control module for controlling the backlight module according to first backlight intensity value. When the translation vector value is greater than the threshold value, the backlight control module controls the backlight module according to the second backlight intensity value.

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Taoyuan, Taiwan

Ting-Lan Lin