Abstract: A bandwidth control method is adapted for use in a network device having a system clock. The network device has a register for storing a transmittable data amount to control bandwidth. The method includes: calculating a number of elapsed periods of the system clock so as to change a counting value every predetermined time interval, the counting value being cyclic within a specific range; adjusting the transmittable data amount in the register by a first unit amount when the counting value reaches a first count value; and adjusting the transmittable data amount in the register by a second unit amount after adjusting the transmittable data amount by the first unit amount and elapse of the predetermined time interval and when the counting value corresponds to a second count value. The first count value is different from the second count value, and the first unit amount is different from the second unit amount.

Abstract: A bicycle control device includes a speed sensing unit, a light sensing unit, a microprocessor, at least one lamp, a lock module and a warning module. When a bicycle is moving, the speed sensing unit detects the speed of the bicycle and generates a speed signal transmitted to the microprocessor, and the light sensing unit detects lightness around the bicycle and generates a lightness signal transmitted to the microprocessor. According to the signals, the microprocessor of the control device sends a command signal to turn on the lamp and adjusts the luminance of the lamp in accordance with the lightness signal and the speed signal respectively. Once the bicycle is being parked and the bicycle control device is being removed, the microprocessor generates a lock control signal to lock the bicycle. Meanwhile, it also generates a trigger signal to turn on the warning module.

Abstract: A packet forwarding device is disclosed. The packet forwarding device includes: a transmission interface, coupled to a second network device; a processing unit, coupled to a first network device; a forwarding unit, coupled between the transmission interface and the processing unit; and an interface loop-back, coupled between the forwarding unit and the processing unit.

Abstract: A power monitoring apparatus for receiving an external input signal includes a first modulating unit, a second modulating unit and a comparing unit. The first modulating unit receives and modulates an input signal into a first signal. The second modulating unit receives and modulates the input signal into a second signal. The comparing unit is electrically connected with the first modulating unit and the second modulating unit and has a first input terminal, a second input terminal and an output terminal. The first input terminal receives the first signal and the second input terminal receives the second signal. When a difference between the first signal and the second signal is higher or lower than a predetermined range, the output terminal outputs a control signal.

Abstract: A method and a system for setting a domain name and a network device thereof are provided. In the invention, the network device includes built-in identification information, and the identification information is stored in a back-end database. When the network device receives a domain name, it transmits setting information to a server device. Then, the server device queries the identification information in the back-end database according to the setting information to authenticate the network device. After the network device passes the authentication, the server device maps the domain name to an Internet protocol address. Therefore, a step of registering an account and a password is omitted to simplify a procedure of setting the domain name.

Abstract: A fan system and a stopping method for the fan system are provided. The fan system is electrically connected to a power supply and receives the power therefrom. The fan system includes an energy storage apparatus, a motor and a start-up device. The energy storage apparatus receives and stores the power. The motor is electrically connected to the energy storage apparatus and receives the power. The driver is coupled between the energy storage apparatus and the motor to form a control path and generates a driving signal to the motor according to received power. The start-up device is coupled between the energy storage apparatus and the motor to form a power path therewith. When no power is provided to the fan system, the energy storage apparatus releases the stored power and the start-up device generates a start-up signal to the motor in accordance with the released power so as to form a short-circuit loop in the motor to stop the motor.

Abstract: A bandwidth control method is adapted for use in a network device having a system clock. The network device has a register for storing a transmittable data amount to control bandwidth. The method includes: calculating a number of elapsed periods of the system clock so as to change a counting value every predetermined time interval, the counting value being cyclic within a specific range; adjusting the transmittable data amount in the register by a first unit amount when the counting value reaches a first count value; and adjusting the transmittable data amount in the register by a second unit amount after adjusting the transmittable data amount by the first unit amount and elapse of the predetermined time interval and when the counting value corresponds to a second count value. The first count value is different from the second count value, and the first unit amount is different from the second unit amount.

Abstract: A power monitoring apparatus for receiving an external input signal includes a first modulating unit, a second modulating unit and a comparing unit. The first modulating unit receives and modulates an input signal into a first signal. The second modulating unit receives and modulates the input signal into a second signal. The comparing unit is electrically connected with the first modulating unit and the second modulating unit and has a first input terminal, a second input terminal and an output terminal. The first input terminal receives the first signal and the second input terminal receives the second signal. When a difference between the first signal and the second signal is higher or lower than a predetermined range, the output terminal outputs a control signal.

Abstract: A network system capable of dynamically controlling a data flow is disclosed. The network system includes: a forwarding unit, for receiving a packet and for providing a QoS (quality of service) function; and a processor, for accessing data from the forwarding unit through an interface and setting at least one parameter of the forwarding unit. The interface is coupled between the forwarding unit and the processor, and the processor executes a software program to set the at least one parameter of the forwarding unit. In this way, the forwarding unit can classify received packets into different QoS levels according to their transmission properties, and can provide different forwarding methods and QoS services to reduce the amount of the output queues physically.

Abstract: A fan system and a stopping method for the fan system are provided. The fan system is electrically connected to a power supply and receives the power therefrom. The fan system includes an energy storage apparatus, a motor and a start-up device. The energy storage apparatus receives and stores the power. The motor is electrically connected to the energy storage apparatus and receives the power. The driver is coupled between the energy storage apparatus and the motor to form a control path and generates a driving signal to the motor according to received power. The start-up device is coupled between the energy storage apparatus and the motor to form a power path therewith. When no power is provided to the fan system, the energy storage apparatus releases the stored power and the start-up device generates a start-up signal to the motor in accordance with the released power so as to form a short-circuit loop in the motor to stop the motor.

Abstract: A heat dissipation system includes a fan module and a client device. The fan module includes at least two fans, each of which has a controller and a sensor. The client device is electrically connected to the controllers of the fans and generates a first control request and a second control request to allow the fans of the fan module to respectively operate in synchronous and asynchronous modes. The dissipation system allows the fans to be switched between these modes in accordance with the environment.

Abstract: A packet forwarding device is disclosed. The packet forwarding device includes: a transmission interface, coupled to a second network device; a processing unit, coupled to a first network device; a forwarding unit, coupled between the transmission interface and the processing unit; and an interface loop-back, coupled between the forwarding unit and the processing unit.

Abstract: A bi-directional single-phase motor includes a stator, a rotor and a control circuit. The rotor is coupled to the stator and rotates along a first direction or a second direction. The control circuit is disposed in the stator and has a first inductive element and a second inductive element. When the first inductive element is on and the second inductive element is off, the rotor rotates along the first direction. When the first inductive element is off and the second inductive element is on, the rotor rotates along the second direction.

Abstract: A method for multicast packet forwarding in a switch. The switch includes a look-up table and a plurality of ports. The switch transfers a multicast packet according to the look-up table. The method includes receiving the multicast packet from a port; if the multicast packet conforms to a specific transmission protocol then detecting a destination address information in the multicast packet; and checking whether the destination address information belongs to a network address set, wherein if the destination address information belongs to the network set the port is determined to be coupled to a multicast packet processing device and a corresponding relationship between the port and the multicast packet processing device is stored into the look-up table.