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41results about How to "Storage space" patented technology

VLAN-based data packet transmission and ethernet bridge device

The present invention provides a VLAN-based data packet transmission method and an Ethernet bridge device. The method includes: learning a member port corresponding to a VLAN according to a data packet received by an Ethernet bridge device, and storing a correspondence between a VLAN and the learnt member port; and forwarding the data packet by the Ethernet bridge device according to the correspondence between each VLAN and its member port that is stored. In the invention, the storage space of MAC address table of the Ethernet bridge device only needs to meet the requirement on the MAC address of its local user, thus the requirement of the access convergence network on the storage space of the MAC address table of the Ethernet bridge device may be lowered. According to the invention, the correspondence between the VLAN and the member port stored in the Ethernet bridge device is only related to the number of VLANs in the network, regardless of the number of users accessing the network, so that more users can access the access convergence network, which is advantageous for expanding the network. Therefore, the networking cost of the access convergence network can be lowered.
Owner:HUAWEI TECH CO LTD

Method and apparatus for performing mathematical functions using polynomial approximation and a rectangular aspect ratio multiplier

A method for approximating mathematical functions using polynomial expansions is implemented in a numeric processing system (10) which comprises a control and timing circuit (18), a microprogram store (20) and a multiplier circuit (34). The multiplier circuit (34) may comprise a rectangular aspect ratio multiplier circuit (40) having an additional ADDER INPUT to enable the repeated evaluation of first order polynomials to evaluate polynomial expansions associated with each mathematical function. A constant store (28) is used to store predetermined coefficients for the polynomial expansion associated with each mathematical functionsfunction. The microprogram store (20) is used to store argument transformation routines, polynomial expansions and result transformation routines associated with each mathematical function. The questions raised in reexamination request No. 90 / 004,138, filed Feb. 12, 1996, have been considered and the results thereof are reflected in this reissue patent which constitutes the reexamination certificate required by 35 U.S.C. 307 as provided in 37 CFR 1.570(e).
Owner:VIA CYRIX
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