Abstract: A memory device that includes a driver IC, a voltage-dividing resistor, at least two noise-suppressing resistors and at least three memory ICs is provided. A terminal of the voltage-dividing resistor is electrically coupled to a voltage source and another other terminal of the voltage-dividing resistor is electrically coupled to the driver IC through an end a connection path. One of the memory ICs is electrically coupled to the voltage-dividing resistor and the driver IC through the end the connection path. Each of at least two of the other memory ICs is electrically coupled to the connection path through one of the noise-suppressing resistors and is further electrically coupled to the driver IC.

Abstract: A navigation system adapted to an electronic device is provided. The navigation system comprises: a processor configured to control a movement direction of the electronic device according to a navigation path, obtain spatial information, and set a waypoint according to the spatial information; and a plurality of distance measuring modules for measuring a waypoint distance between the electronic device and the waypoint. When the processor determines the waypoint distance is less than a waypoint threshold value, the processor is configured to calculate a first distance and a second distance according to the obstacle distances measured by the distance measuring modules. The processor is configured to control the electronic device to have a first movement, a second movement and a third movement according to the first distance and the second distance. A navigation method is further provided.

Abstract: A control method of an autonomous mobile robot comprises: receiving a dock signal and executing a control program according to the dock signal. The control program includes detecting a first guiding signal, a second guiding signal and a third guiding signal transmitted by the charging station via the first sensing unit, the second sensing unit and the third sensing unit, sensing a measured distance between the autonomous mobile robot and the charging station when the second guiding signal is detected by the second sensing unit, and the autonomous mobile robot moves toward the charging station or away from the charging station according to the measured distance and a first threshold, and re-executing the control program.

Abstract: A circuit for a memory system including a plurality of memories, including: a plurality of connection traces coupled in series, each connection trace having a first end, and a second end coupled to a terminal of a memory of the plurality of memories; wherein an equivalent impedance of a first connection trace of the plurality of connection traces is different with the equivalent impedance of the second connection trace of the plurality of connection traces, the first connection trace being coupled to the second connection trace in series.

Abstract: A Ball Grid Array (BGA) formed on printed circuit board is provided. The BGA comprises a first solder ball module and a second solder ball module. The first solder ball module comprises a plurality of first solder balls, wherein one of the first solder balls is grounded for shielding two other first solder balls, and one of the first solder balls is floating. The second solder ball module comprises a plurality of second solder balls, wherein two of the second solder balls are grounded and one of the two grounded second solder balls penetrates the printed circuit board through a plated through hole formed on the printed circuit board for shielding two first solder balls among the first solder balls.

Abstract: Disclosed is a two-capacitor-based filter design method comprising: determining a frequency f1 and a fractional bandwidth ratio FBW; selecting a first and a second capacitors according to f1 and FBW, in which a resonant frequency fC1 of the first capacitor is equal to f1×(1?N×FBW), a resonant frequency fC2 of the second capacitor is equal to f1×(1+M×FBW), and each of N and M is a positive number less than one; and determining a length of a first transmission line according to fC1 and a signal speed, and determining a length of a second transmission line according to fC2 and the signal speed. The first capacitor is coupled between a center of the first transmission line and ground, the second capacitor is coupled between a center of the second transmission line and ground, and the first and second transmission lines are connected in series.

Abstract: A control method of an autonomous mobile robot comprises: receiving a dock signal and executing a control program according to the dock signal. The control program includes detecting a first guiding signal, a second guiding signal and a third guiding signal transmitted by the charging station via the first sensing unit, the second sensing unit and the third sensing unit, sensing a measured distance between the autonomous mobile robot and the charging station when the second guiding signal is detected by the second sensing unit, and the autonomous mobile robot moves toward the charging station or away from the charging station according to the measured distance and a first threshold, and re-executing the control program.

Abstract: A navigation system adapted to an electronic device is provided. The navigation system comprises: a processor configured to control a movement direction of the electronic device according to a navigation path, obtain spatial information, and set a waypoint according to the spatial information; and a plurality of distance measuring modules for measuring a waypoint distance between the electronic device and the waypoint. When the processor determines the waypoint distance is less than a waypoint threshold value, the processor is configured to calculate a first distance and a second distance according to the obstacle distances measured by the distance measuring modules. The processor is configured to control the electronic device to have a first movement, a second movement and a third movement according to the first distance and the second distance. A navigation method is further provided.

Abstract: A Ball Grid Array (BGA) formed on printed circuit board is provided. The BGA comprises a first solder ball module and a second solder ball module. The first solder ball module comprises a plurality of first solder balls, wherein one of the first solder balls is grounded for shielding two other first solder balls, and one of the first solder balls is floating. The second solder ball module comprises a plurality of second solder balls, wherein two of the second solder balls are grounded and one of the two grounded second solder balls penetrates the printed circuit board through a plated through hole formed on the printed circuit board for shielding two first solder balls among the first solder balls.

Abstract: An impedance correction device and a method thereof are provided. A step generator is used to generate a step signal and send to a circuit under test. A reflected signal returned back from the circuit under test is used as a measurement signal; and the measurement signal can be measured to obtain a characteristic impedance value. When the measurement signal is greater than the initially measured step signal, an impedance value of a correction resistor is increased; when the measurement signal is smaller than the initially measured step signal, the impedance value of the correction resistor is reduced. Through adjustment of the correction impedance value, impedance matching between the correction impedance value and the characteristic impedance value is achieved.

Abstract: An impedance correction device and a method thereof are provided. A step generator is used to generate a step signal and send to a circuit under test. A reflected signal returned back from the circuit under test is used as a measurement signal; and the measurement signal can be measured to obtain a characteristic impedance value. When the measurement signal is greater than the initially measured step signal, an impedance value of a correction resistor is increased; when the measurement signal is smaller than the initially measured step signal, the impedance value of the correction resistor is reduced. Through adjustment of the correction impedance value, impedance matching between the correction impedance value and the characteristic impedance value is achieved.