Chung Yuan Christian University

Dynami Vision Ltd.

Shih-Lun Chen

Ting-Lan Lin

Chun Yu Lin

Wen-Shen Lo

Ying Chen

Hsiao-Chi Chen

Kun-Hsien Tung

Tsun-Kuang Chi

Wen-Xuan Zhao

Ming-Chun Tuan

Chien-Rung Huang

Szu-Ching Pan

Chun Kuan Wu

A filter system includes: a first mixer, converting an input signal into a first signal according to a reference frequency signal, wherein the reference frequency signal corresponding to a target frequency band; an analog-to-digital converter, coupled to the first mixer, converting the first signal into a first digital signal; a digital filter, coupled to the analog-to-digital converter, filtering the first digital signal according to a first frequency band and generating a second digital signal, wherein the first frequency band corresponding to the first signal; a digital-to-analog converter coupled to the digital filter, converting the second digital signal into a second signal; and a second mixer, coupled to the digital-to-analog converter, converting the second signal into an output signal according to the reference frequency signal, wherein the output signal corresponds to the input signal filtered by the target frequency band.

Filter system and operation method thereof

A successive-approximation register analog-to-digital converter (SAR ADC), a correction method and a correction system are provided. The SAR ADC generates an original weight value sequence according to multiple original weight values. The SAR ADC converts an analog time-varying signal to establish a transforming curve corresponding to the original weight values. In addition, the SAR ADC generates an offset value sequence according to an offset of the transforming curve, uses the offset value sequence to correct the original weight value sequence to generate a corrected weight value sequence, and uses multiple corrected weight values of the corrected weight sequence to improve linearity of the transforming curve.

Successive-approximation register analog-to-digital converter, correction method and correction system

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.

Automatic backlight control system and method thereof

An oscillation module includes a frequency generator, a signal calibrator, a multiplexer, and a controller. The oscillation module is calibrated by using calibration parameters and a control instruction of which the frequency and phase are the same as the oscillation frequency signal generated by the frequency generator. As a consequence, an electronic pin used for processing asynchronous signals can be saved so as to reduce the chip area of the oscillation module.

Growing community of inventors

Taoyuan, Taiwan

Shih-Lun Chen