摘要:
The present invention provides a high speed digital data retiming apparatus, in which, in binary data bits transmitted at a high speed, the data can be retimed in a stable manner, even if there are present a static skew due to a delay difference between the retiming clock pulse and the data and a dynamic skew due to the characteristic variation according to time and temperature. Therefore, the present invention has the following advantages compared with the conventional apparatus. First, periodical and regular external clock pulses are delayed by means of a delaying section, so that system performance is independent of the pattern of data. Second, even if the data phases show a continuous difference (wandering) for more than a certain period of time, an elastic buffer absorbs the wandering, and therefore, no data loss is generated, with the result that the system is not put to a disorder condition. Third, even in the case where a metastable state occurs, its occurrence probability can be significantly reduced by utilizing logic, thereby making it possible to retime the data in stable manner.
摘要:
A wireless LAN distribution system, forwarding data received from a correspondent node to a station connected to an access point, includes: a location management server (LMS) for storing and managing a mapping table as an information table storing IP addresses of stations and physical access control addresses of the access points having the stations located therein, and causing the access points to perform an IP address check for the stations located in their area; an edge router for forwarding the data to the LMS using the physical access control address of the mapping table; and an access point for checking the physical access control address of the access point and the IP address of the destination station, and forwarding the data from the correspondent node.
摘要:
Disclosed is a method and apparatus for the non-invasive selection of high-quality seeds, based on optical coherence tomography, by which pathogen-infected and pathogen-free seeds can be discriminated in a non-invasive manner. The apparatus is operated by the processes of scanning a seed of diagnostic interest in a non-invasive manner using an optical coherence tomographic unit; processing interference signals of the scanned tomographic images to produce tomographic image data of the seed of diagnostic interest; analyzing the tomographic image data; comparing the analyzed tomographic image data with preset reference tomographic image data; diagnosing the seed of diagnostic interest as a pathogen-infected or pathogen-free seed according to the comparison data; and selecting high-quality seeds according to the diagnosis data. It can screen high-quality seeds with rapidity, convenience, and accuracy at a low cost and is industrially applicable, making a great contribution to agricultural quarantine inspection.
摘要:
The present invention relates to a method for supporting Internet Protocol version 6 (IPv6) in a wireless communication system. According to an exemplary embodiment of the present invention, a wireless communication system consists of an access router, a bridge, and a base station. The access router allocates a common network prefix to all subscriber stations served by it. When receiving IP multicast data destined for all nodes on the same link, the access router forwards the data back to the bridge. The bridge transmits IP multicast data with reference to an identification cache table (ICT) which includes MAC addresses of each subscriber stations, identifiers for point-to-point connections between the bridge and base station, IPv6 addresses of each subscriber station and valid flags for the IPv6 addresses. The base station provides point-to-point connections to both the bridge and each of subscriber stations.
摘要:
In a handover method, a mobile node receives a Layer 2 trigger message; requests information on Layer 3 of a new access router (NAR) from a previous access router (PAR) by using information included in the Layer 2 trigger message and information on an IP address of the NAR and a new Care of Address (NCoA) to be used when moving to the NAR; and performs registration with a Home Agent (HA) of the mobile node and sending binding update to an associated correspondence node by using the NCoA when a Layer 2 handover is occurred. With this configuration, the present invention provides a handover method automatically creating an address using a MAC (Medical access control) address in the mobile IPv6 (Internet Protocol version 6).
摘要:
Alpha-tocopherol 4-aminobenzoate compounds, represented by formula (I), are prepared by the esterification of alpha-tocopherol with 4-aminobenzoic acid. The esters are converted into the element compounds in vivo, so that they have alpha-tocopherol's biological effect including antioxidation as well as the pharmaceutical and biological effects of 4-aminobenzoic acid, including the promotion of red blood cell formation and metabolism, the role of a growth stimulating factor, keeping the skin healthy, and the prevention of hair decoloration. In said formula (I) R1 and R2 which may be the same or different, each is a hydrogen atom or a linear or branched C1˜C4 alkyl chain.
摘要:
Disclosed is a method and apparatus for the non-invasive selection of high-quality seeds, based on optical coherence tomography, by which pathogen-infected and pathogen-free seeds can be discriminated in a non-invasive manner. The apparatus is operated by the processes of scanning a seed of diagnostic interest in a non-invasive manner using an optical coherence tomographic unit; processing interference signals of the scanned tomographic images to produce tomographic image data of the seed of diagnostic interest; analyzing the tomographic image data; comparing the analyzed tomographic image data with preset reference tomographic image data; diagnosing the seed of diagnostic interest as a pathogen-infected or pathogen-free seed according to the comparison data; and selecting high-quality seeds according to the diagnosis data. It can screen high-quality seeds with rapidity, convenience, and accuracy at a low cost and is industrially applicable, making a great contribution to agricultural quarantine inspection.
摘要:
In a handover method, a mobile node receives a Layer 2 trigger message; requests information on Layer 3 of a new access router (NAR) from a previous access router (PAR) by using information included in the Layer 2 trigger message and information on an IP address of the NAR and a new Care of Address (NCoA) to be used when moving to the NAR; and performs registration with a Home Agent (HA) of the mobile node and sending binding update to an associated correspondence node by using the NCoA when a Layer 2 handover is occurred. With this configuration, the present invention provides a handover method automatically creating an address using a MAC (Medical access control) address in the mobile IPv6 (Internet Protocol version 6).