摘要:
A method allows Internet Protocol version 6 (IPv6) nodes that use Mobile IPv6 for mobility management, or DHCP for address provisioning, to securely claim and defend their network addresses themselves or through proxies using the SEND protocol. The network node may also sign and verify a message that claims and defends a network address. The network address to be claimed and defended may be either autoconfigured or obtained from a server using the DHCPv6 protocol. If the MCGA is generated by a mobile IPv6 node as a mobile IPv6 home address, the MCGA can be securely proxied by the mobile IPv6 home agent after the mobile node has left the home link. However, if the MCGA is generated as a mobile IPv6 care-of address by a mobile IPv6 node while on a foreign subnet, the MCGA can be securely proxied by the current or new access router, before the mobile node arrives on the link and after it has left the link, respectively.
摘要:
Cryptographically Protected Prefixes (“CPPs”) are used to create IP addresses, preventing any correlation between a CPP IP address and a host's geographic location. An IP address is subdivided into address prefixes of multiple segments. Each segment is encrypted with a cryptographic key known only to a subset of routers in the access network domain (or Privacy Domain). Therefore, each router obtains the information it needs to forward a packet of information, but not any additional information.
摘要:
Methods and apparatuses to model the relation between the delay samples and congestion losses and to protect media flows against congestion losses are disclosed. In one embodiment, the method comprises measuring congestion by delay samples, and performing a dynamic FEC algorithm that uses convex hull clustering for loss-event classification, including determining an FEC rate according to the loss-event classification. In another embodiment, the method comprises measuring congestion by delay samples, modeling loss events associated with the delay samples by grouping loss events as unions of convex hulls to identify a period of potentially increased congestion, dynamically changing the FEC rate based on the modeling, and applying FEC protection to the media flow during the period based on the FEC rate. In yet another embodiment, the method comprises forming clusters using past loss events and their {FTT, F{dot over (T)}T} or {RTT, R{dot over (T)}T} estimates, and estimating future loss events using most recent {FTT, F{dot over (T)}T} or {RTT, R{dot over (T)}T} estimates and their membership in convex hull clusters.
摘要:
A winch which can operate with an external brake, or the external brake can be removed to operate with an internal brake. The winch has a cable drum that rotates to get cable on and off the drum. Two eccentric cams are rotated to always keep a soft plastic part pressed against the drum.
摘要:
A method for generating a network address, called a multi-key cryptographically generated address (MCGA), enables the network address to be claimed and defended by multiple network devices. The network address can be generated by (a) obtaining a cryptographically generated identifier using public keys corresponding to the network devices, and (b) applying an address generation function to the cryptographically generated identifier. The address generation function may be a one-way coding function or cryptographic hash of the public keys from all hosts that will advertise or claim the right to use the address. A message that claims authority over the MCGA may include an encrypted digest of the message which is encrypted using the private key of the sender. Authentication of the sender may be achieved by obtaining a test digest from the message using the digest function, decrypting the encrypted digest, and comparing the decrypted digest to the test digest. The signature is generated with only the private key of the host sending the message, but requires the public keys of all the network devices claiming authority to verify.
摘要:
A device which can slide up and down on a chain or cable, can be loosened to attach to the chain or cable, but does not have any parts that come free when the part is loosened. The device includes first and second pieces, each made of structural material, the first and second pieces fitting together at concave and convex surfaces, to form an interlock forms inner surfaces with a through hole of a first shape that can slide along either a cable or a chain.
摘要:
A reconfigurable power pack, that produces rotational power and can be used with separate accessories. The housing can be mounted in a first configuration with its motor facing downward and in which the housing is energized to move along a substantially horizontal extrusion. A second configuration mounts the housing is to move along a track in a deck. Other configurations are also possible.
摘要:
Methods and apparatuses to model the relation between the delay samples and congestion losses and to protect media flows against congestion losses are disclosed. In one embodiment, the method comprises measuring congestion by delay samples, and performing a dynamic FEC algorithm that uses convex hull clustering for loss-event classification, including determining an FEC rate according to the loss-event classification. In another embodiment, the method comprises measuring congestion by delay samples, modeling loss events associated with the delay samples by grouping loss events as unions of convex hulls to identify a period of potentially increased congestion, dynamically changing the FEC rate based on the modeling, and applying FEC protection to the media flow during the period based on the FEC rate. In yet another embodiment, the method comprises forming clusters using past loss events and their {FTT, F{dot over (T)}T} or {RTT, R{dot over (T)}T} estimates, and estimating future loss events using most recent {FTT, F{dot over (T)}T} or {RTT, R{dot over (T)}T} estimates and their membership in convex hull clusters.
摘要:
A zipper style lift that coils into a box for storage, but extends to form a rigid, self erecting lift part. The lift stores itself in a housing when retracted, by retracting chain parts into a spiral form.