Abstract: A method is provided for forming an integrated circuit (IC) chip package structure. The method includes providing a substrate for an interposer, and forming a conductive interconnect structure in and on the substrate for connecting a group of selected IC dies. The method includes forming warpage-reducing trenches in non-routing regions of the interposer, wherein the warpage-reducing trenches are sized and positioned based on a warpage characteristic to reduce the warpage of the chip package structure. The method also includes depositing a warpage-relief material in the warpage-reducing trenches according to the warpage characteristic to reduce the warpage of the chip package structure, and bonding the group of selected IC dies to the interposer to form a chip package structure.

Abstract: A conductive cable manufacturing method includes the following steps: providing a plurality of first strands and a plurality of second strands, wherein the total quantity of the first strands and the second strands is 2N and N is a positive integer, and the first strands are arranged to form a circle having a gravity center and the gravity center defines a central axis penetrating through the gravity center; twisting the first strands along the central axis in the same direction or interlacing the first strands with each other so as to obtain a central core body; and winding each of the second strands around the central core body clockwise or counterclockwise in order to obtain a conductive cable.

Abstract: A method for detecting the cleanliness of a filter. The filter is disposed on an air inlet or an air outlet of a fan. The method includes the following steps. At first, outputting a rotation control voltage to the fan, and an airflow generated by the rotation of the fan flows through the filter. Then, detect an actual rotation rate of the fan, and calculate an actual dust value f1 according to the actual rotation rate and the rotation rate control voltage. Then, a dust upper limit value of the filter is defined. Finally, the cleanliness of the filter is determined according to the actual dust value and the dust upper limit value.

Abstract: A projector and a dust detection device for an air filter thereof. The projector comprises a lamp, a fan, an filter, and a dust detection device. The lamp comprises a housing with an inlet and an exit. The fan is disposed in front of the inlet of the housing, and generates airflow to dissipate heat produced by the lamp. The air filter is disposed in front of the exit of the housing, and filters the airflow passing around the lamp. The dust detection device is disposed behind the air filter, and detects the state of the filtered airflow.

Abstract: A video display device including a plurality of keys, a microprocessor and a display panel is disclosed. The keys are disposed on an outer surface of the display device, and the microprocessor is disposed inside the display device. The microprocessor is electrically coupled with the keys. The display panel is used for displaying an image. When one of the keys is pressed or touched, the display panel displays a menu. The menu includes multiple instructions corresponding to the function of the keys. Each instruction of the menu corresponds to the sequence and arrangement of each key.

Abstract: A system and method thereof for authentication control are provided. A display device displays a password input screen. The password input screen comprises multiple display characters being displayed at a coordinate location individually. A storage device stores at least one password configuration record individually comprising a detection character and coordinate data thereof. A processing unit compares the display characters determine an access status when each detection character is the same as one of the display characters and the corresponding coordinate data corresponds to the corresponding coordinate location.

Abstract: A digital light projector (DLP) enabling to support at least two digital micromirror devices (DMD) with different resolution is provided. Appending with a predetermined resolution, the DLP comprises a scalar transform unit and an image control unit. The scalar transform unit has a plurality of scalar firmware respect to various resolutions including the predetermined resolution stored therein. The image control unit electrically connects to the scalar transform unit and has a DMD firmware and a register number respect to the predetermined resolution. While the DLP is operating, the scalar transform unit reads the register number and chooses a proper scalar firmware accordingly.

Abstract: A method for detecting the cleanliness of a filter. The filter is disposed on an air inlet or an air outlet of a fan. The method includes the following steps. At first, outputting a rotation control voltage to the fan, and an airflow generated by the rotation of the fan flows through the filter. Then, detect an actual rotation rate of the fan, and calculate an actual dust value f1 according to the actual rotation rate and the rotation rate control voltage. Then, a dust upper limit value of the filter is defined. Finally, the cleanliness of the filter is determined according to the actual dust value and the dust upper limit value.

Abstract: A projector and a dust detection device for an air filter thereof. The projector comprises a lamp, a fan, an filter, and a dust detection device. The lamp comprises a housing with an inlet and an exit. The fan is disposed in front of the inlet of the housing, and generates airflow to dissipate heat produced by the lamp. The air filter is disposed in front of the exit of the housing, and filters the airflow passing around the lamp. The dust detection device is disposed behind the air filter, and detects the state of the filtered airflow.