摘要:
An apparatus, system, and method for constructing, transmitting, and authenticating a password utilized by an authentication device to authenticate an access device. The authentication device receives the password from the access device, authenticates the access device if the password matches stored information, and returns an acknowledgment message that includes an index value associated with a stored character set. The access device constructs and transmits the password. The access device receives from a user, a plurality of predefined characters forming a User ID. The access device also receives the acknowledgment message and index value from the authentication device. The index value is used to identify a set of password modification factors from a plurality of sets stored in a lookup table. The access device utilizes the identified set to modify a password, and transmits the password to the authentication device.
摘要:
A system and method for generating and authenticating a password to protect a computer system from unauthorized access. The characters of the password are placed in data packets by an access device. Prior to sending the packets, the device inserts a predefined number of blank packets between each of the character-carrying packets. The number of blank packets is retrieved from a number sequence that is shared between the access device and an authentication device. The authentication device determines whether the received set of password characters matches a stored set of password characters, determines whether the received number of blank packets between the received character-carrying packets matches a predefined number of blank packets, and positively authenticates the access device only if both conditions are met.
摘要:
The invention provides a bicomponent staple fiber comprising poly(ethylene terephthalate) and poly(trimethylene terephthalate) wherein the bicomponent fiber has a substantially oval cross-section shape having an aspect ratio A:B of about 2:1 to about 5:1 wherein A is a fiber cross-section major axis length and B is a fiber cross-section minor axis length, a polymer interface substantially perpendicular to the major axis, a cross-section configuration selected from the group consisting of side-by-side and eccentric sheath-core, a tenacity at 10% elongation of about 1.1 cN/dtex to about 3.5 cN/dtex, a free-fiber length retention of about 40% to about 85%, and a tow crimp development value of about 30 to 55%, and a spun yarn comprising the bicomponent staple fiber.
摘要:
A method and apparatus for detecting concealed items on or in an object by utilizing a low Z material panel. The object to be scanned is located between an x-ray detector and the low Z material panel. The method includes producing a pencil beam of x-rays from an x-ray source directed toward the object, scanning the beam of x-rays over the object, and detecting x-rays scattered from the beam of x-rays as a result of interacting with the object and the low Z material panel. The apparatus includes an x-ray source to produce a pencil beam of x-rays directed toward the object, a scanner to scan the beam of x-rays over the object, and the detector to detect x-rays scattered from the beam of x-rays as a result of interacting with the object and the low Z material panel.
摘要:
A linescan camera is used in conjunction with a mechanical scanning mechanism to acquire high-resolution images of an area under video surveillance. The video signal from the linescan camera is converted into a digital data stream, compressed, and stored in a digital memory. Under control of an operator, full-field images are selectively recalled from the digital memory and converted to a lower resolution for display on a monitor. The operator selects a region-of-interest from the full-field display through the use of a computer pointing device, such as a mouse. The selected area is then displayed on the monitor in its full acquired resolution, thereby allowing the operator to view high-resolution images of a large area under surveillance.
摘要:
Systems and methods for monitoring the pressurization performance of a cable network, such as a telecommnunications cable network, including monitoring a plurality of pressurization sensors, monitoring a plurality of pressurization alarms, receiving data related to the plurality of pressurization sensors and the plurality of pressurization alarms, and generating an index. The index taking into account the number of pressurization sensors monitored during a predetermined period of time, the number of pressurization sensors which are inoperable during the predetermined period of time, and the number of pressurization alarms which are tripped during the predetermined period of time.
摘要:
Systems and methods for remotely starting a cable pressure monitoring unit operable for monitoring the air pressure within a pressurized cable route, such as a telecommunications cable route, including a remote computer operable for generating and transmitting a command signal directing the cable pressure monitoring unit to start, an automated transfer system operable for receiving the command signal directing the cable pressure monitoring unit to start, and a computer network operable for communicating the command signal from the remote computer to the automated transfer system. The systems and methods also including a cable pressure monitoring unit start module disposed within the automated transfer system operable for generating and transmitting an operation signal directing the cable pressure monitoring unit to start, a relay operable for receiving the operation signal directing the cable pressure monitoring unit to start and starting the cable pressure monitoring unit, and a plurality of wires operable for communicating the operation signal from the cable pressure monitoring unit start module to the relay.
摘要:
A satellite communications system is disclosed. One of the embodiments of the present invention includes six to fourteen satellites (12) which operate in a single Equatorial orbit (14). These satellites (12) are capable of providing communications services to locations on the Earth (E) which are within thirty degrees of the Equator (16). Another embodiment of the invention utilizes both the single Equatorial orbit plane (14) in combination with other satellites (12) moving in polar or inclined orbits (60, 63, 210). The embodiment that combines satellites (12) in Equatorial (14), polar (60) and inclined (63, 210) orbits will provide a wide variety of data services to virtually any point on the globe. In the preferred embodiments, the satellites (12) are designed to operate in a circular low Earth orbit at an altitude of from 800 to 1852 kilometers. Although the preferred embodiments utilize this specific range of altitudes, the satellites (12) are designed to fly in any orbit that is not a geosynchronous orbit. The satellites (12) are also capable of speeding packetized messages (225) around the globe either by working in combination with relay stations (34, 61, 65) on the ground, by transferring message payloads (225) across different orbits via the relay stations (34, 61, 65) or by conveying packetized payloads (225) through the use of inter-satellite links (55).
摘要:
An apparatus for applying a bull nose to adjacent dry wall panels, the apparatus comprising an elongated channel member having a bull nose application surface defined by a central, partially curved portion intersected by a pair of mutually perpendicular flat side portions, the channel member including a pair of transversely disposed slots proximal to one end thereof in which a pair of opposed crimping members are situated and pivotally attached to the channel member for rotation between a first, stored position and a second, crimping position, the crimping members each including a specially configured cutting surface defined by a curved planform having a compound curvature which tapers to a knife edge along symmetrical radii in, the apparatus further including a linkage mechanism attached tot he crimping members for reciprocating, the crimping members between the aforementioned first and second positions, respective, the linkage mechanism comprising a spring loaded anvil member which may be struck by a hammer or mallet, slidably disposed on an elongated rigid shaft attached to and extending outward from the channel member, and dual link pairs pivotally attached to the anvil member and the crimping members at opposite ends thereof, respectively.
摘要:
A pencil beam of X-rays is scanned over the surface of the body of a person being examined. X-rays that are scattered or reflected from the subject's body are detected by a detector. The signal produced by this scattered X-ray detector in then used to modulate an image display device to produce an image of the subject and any concealed objects carried by the subject. The detector assembly is constructed in a configuration to automatically and uniformly enhance the image edges of low atomic number (low Z) concealed objects to facilitate their detection. A storage means is provided by which previously acquired images can be compared with the present image for analyzing variances in similarities with the present image, and provides means for creating a generic representation of the body being examined while suppressing anatomical features of the subject to minimize invasion of the subject's privacy.