Abstract: A kart having a pedal speed controller and other components and arrangements thereof are disclosed. The kart can be provided with a controller for controlling speed; the pedal speed controller comprising a pedestal and a pedal, one end of the pedal is articulated with the pedestal and keeps a certain angle with the pedestal. The pedal speed controller also comprises a sensor connected with the controller, and the sensor can obtain displacement signal along the tread direction of the pedal. The pedal speed controller has the advantages of realizing pedal control of acceleration or deceleration for drivers, avoiding interference with manual adjustment of kart direction, preventing from mutual influence between speed regulation and steering, improving the speed control performance of the kart, and improving the driving experience.

Abstract: A component carrier can have a housing forming a receiving space configured to receive at least one component through a receiving opening. A pivotable sidewall can be coupled to the housing and transitionable between an open configuration and a closed configuration. A releasable latch coupled to the front portion of the housing capable of being secured the pivotable sidewall in the closed configuration. In the open configuration, the receiving opening is accessible. In the closed configuration, the pivotable sidewall secured to the housing by the releasable latch and the receiving opening is inaccessible.

Abstract: A component carrier can have a housing forming a receiving space configured to receive at least one component through a receiving opening. A pivotable sidewall can be coupled to the housing and transitionable between an open configuration and a closed configuration. A releasable latch coupled to the front portion of the housing capable of being secured the pivotable sidewall in the closed configuration. In the open configuration, the receiving opening is accessible. In the closed configuration, the pivotable sidewall secured to the housing by the releasable latch and the receiving opening is inaccessible.

Abstract: A method for MAC address management is provided. A MAC address is provided, and capacities of a first column and a second column corresponding to a first index in a MAC table are checked. If the first column and the second column are filled, capacities of a third column and a fourth column corresponding to a second index in the MAC table are checked. If one of the third and fourth columns is empty, the MAC address is written thereto. The second index is successive to the first index. The MAC table further comprises a plurality of time stamp columns, recording idle time of each MAC address.

Abstract: A kart having a pedal speed controller and other components and arrangements thereof are disclosed. The kart can be provided with a controller for controlling speed; the pedal speed controller comprising a pedestal and a pedal, one end of the pedal is articulated with the pedestal and keeps a certain angle with the pedestal. The pedal speed controller also comprises a sensor connected with the controller, and the sensor can obtain displacement signal along the tread direction of the pedal. The pedal speed controller has the advantages of realizing pedal control of acceleration or deceleration for drivers, avoiding interference with manual adjustment of kart direction, preventing from mutual influence between speed regulation and steering, improving the speed control performance of the kart, and improving the driving experience.

Abstract: Systems and methods for packet forward control. The system comprises a plurality of ports and a processing module configured to receive a packet. The processing module comprises a resource management module and a forward control module. The resource management module detects whether congestion occurs on at least one specific port among the ports. The forward control module determines whether the specific port comprises a predetermined port within the ports, and if so, forwards the packet to at least one of the ports excepting the predetermined port.

Abstract: A message transmitting queue delivers messages between a source controller and a destination controller. According to the message transmitting request of the source controller, sequentially distribute the free message row of the message transmitting queue, and set the message row to the distributed state. After the source controller writes the message of the message row, set the message row to the written state. At this moment, when the message row is in the position that is read sequentially by the destination controller, a read request is issued, so that the destination controller reads the message according to the read request when the reading completes, clears the distributed signal and the written signal, so that the message row goes back to the free state. When the message transmitting queue has no free message row, a no free message row signal to inform the source controller is issued.

Abstract: A method for expanding a service VLAN space of a provider network is provided. A bit number occupied by a taq protocol identifier (TPID) in a TPID field is reduced to leave a plurality of spare bits. The spare bits of the TPID field is then used to represent a first portion of a service VLAN identifier. A VLAN identifier field of a tag control information (TCI) field is used to represent a second portion of the service VLAN identifier. The first and second portions are then combined to obtain the service VLAN identifier of the packets completely.

Abstract: A data-packet processing method is used in a network system. The network system includes a buffer for optionally storing a data packet to be transferred, and the method includes steps of: determining a type of the data packet to be transferred; determining a storage state of a buffer where the data packet is to be temporarily stored before transferring; and storing the data packet into the buffer if the storage state of the buffer is a packet-accepting storage state; wherein the packet-accepting storage state of the buffer varies with the type of the data packet.

Abstract: A method for processing packets of a VLAN in a network switch is provided. The VLAN comprises a plurality of physical LANs and are divided into a plurality of subnets. The method comprises the steps of: receiving a packet through an ingress port of the network switch, wherein the packet is tagged with a VID of the VLAN; finding a VLAN member according to the VID, wherein the VLAN member represents all ports of the network switch dedicated to serving packets of the VLAN; finding a forwarding scope according to the ingress port, wherein the ingress port is one of the ports dedicated to serving packets of a first subnet of the VLAN and the forwarding scope represents all ports of the network switch dedicated to serving packets of the first subnet; and determining an egress port of the packet according to both the VLAN member and the forwarding scope.

Abstract: The invention provides a method for implementing varying service quality grades in a network switch. First, a plurality of users of the network switch is classified into a plurality of service quality grades according to a contributing factor of the plurality of the users. Each of the plurality of users is then connected to the network switch via one of a plurality of ports of the network switch according to its service quality grade. An original priority of a packet in the network switch is then determined. An adjusted priority of the packet is then determined according to both the original priority of the packet and a priority adjustment table of an ingress port of the packet. Each of the plurality of ports has a corresponding priority adjustment table, and each of the priority adjustment tables includes a mapping relationship between the original priority and the adjusted priority.

Abstract: A data-packet processing method is used in a network system. The network system includes a buffer for optionally storing a data packet to be transferred, and the method includes steps of: determining a type of the data packet to be transferred; determining a storage state of a buffer where the data packet is to be temporarily stored before transferring; and storing the data packet into the buffer if the storage state of the buffer is a packet-accepting storage state; wherein the packet-accepting storage state of the buffer varies with the type of the data packet.