118results about How to "Eliminate Collisions" patented technology

An arbitration mechanism provides quality of service guarantees for time-sensitive signals sharing a local area computer network with non-time-sensitive traffic. Device adapters are placed at all access points to an Ethernet network. The device adapters limit admission rates and control the timing of all packets entering the network. By doing so, collisions are eliminated for timesensitive traffic, thereby guaranteeing timely delivery. A common time reference is established for the device adapters. The time reference includes a frame with a plurality of phases. Each of the phases is assigned to a device adapter. Each device adapter is allowed to transmit packets of data onto the network only during the phase assigned thereto. The length of the phases may be modified in accordance with the number of packets to be transmitted by a particular device adapter. A master device adapter may be appointed to synchronize each of the device adapters.

A system and method of providing distributed election of a shared transmission schedule within an ad hoc network. The invention includes a collision-free access protocol which resolves channel access contentions for time division multiple access (TDMA) of a single channel. Time-slots are organized into part numbers, which are included within sections, a sequence of which define a block. Each node is given a ring number according to its location within the network topology and maintains local neighbor information along with its own part number and message digest. Collision-free channel access is automatically scheduled and repetitious contention phases are resolved by a random permutation algorithm operating in message digests. An empty time-slot utilization method is also described and data packets may also be transmitted subject to a non-zero collision probability within a blind section of the block.

The present invention relates to a pump (10, 110), particularly for dishwashers, comprising a housing made of a housing bottom (28, 128), a housing cover (16, 116), and a heating device (30, 130, 36,136) disposed in between the bottom and cover for heating a washing fluid, the device forming a ring-shaped side wall of the housing, further comprising an impeller (40, 140) arranged in the housing,an intake connection (18, 118) arranged axially in the housing cover (16, 116) relative to the axis of rotation of the impeller (40, 140), and a pressure connection (20, 120), wherein the pressure connection (20, 120) is arranged in the housing cover (16, 116).

A computer implemented method for identifying and linking a data originator and a data file or data batch from the originator through one or more data source systems. The system stores the data files and batches on a permanent basis for subsequent verification purposes, verifying the identity of the data file originator through originator-specific information from the data source system; and generating unique data entries associated with the originator identity, the file identity and / or a file verification cryptographic digest, and a unique originator signature. The data entries and signature are stored in encrypted form in a Relay Access Table (RAT), as are the public and private keys associated with both the data file and the originator. A certificate for verification of the data file is generated, that contains a digital signature, as well as a file cryptographic digest and metadata associated with filing conditions.

An autonomous vehicle collision / crossing warning system provides for simple, inexpensive and decentralized installation, operation and maintenance of a reliable vehicle collision / crossing warning system. The autonomous warning system preferably utilizes a single frequency TDM radio communication network with GPS clock synchronization, time slot arbitration and connectionless UDP protocol to broadcast messages among vehicles and components in the warning system. Adaptive localized mapping of components of interest within the warning system eliminates the need for centralized databases or coordination and control systems and enables new vehicles and warning systems to be easily added to the system in a decentralized manner. Preferably, stationary warning systems are deployed as multiple self-powered units each equipped to receive broadcast messages and to communicate with the other units by a low power RF channel in a redundant Master-Slave configuration. The communication schemes are preferably arranged for low duty cycle operation to decrease power consumption.

The invention discloses a method for accessing user equipment into network equipment, which comprises the following steps: A. a network side, according to user access types of user equipment, sends access information to the user equipment; the information comprises configuration information of corresponding access signal channel resources; B. the user equipment, based on the configuration information of the access signal channel resource, is connected to the network equipment in a corresponding access signal channel. The method solves the problems of high resolution and low success rate in the prior art when district switching is carried out to the user equipment. A system for accessing user equipment into network equipment is disclosed either.

Disclosed herein is a data communications system configured to execute data communication between three parties of a reader / writer, an integrated circuit card wirelessly communicable with the reader / writer in a non-contact manner, and an information processing terminal connected to the intergraded circuit card via a wired interface, the data communications system including: the reader / writer having a read / write wireless control block; the integrated circuit card having an integrated circuit card wireless control block; and the information processing terminal having a request acceptance block, a data storage block, and a data transmission block.

The related asynchronous interactive multi-address accessing method comprises: a central node sets the basic access unit number and business group-transmission unit number according to the business condition, and sends the subscribe group for startup; all nodes requiring group- transmission compete in time slot, and the central node counts collision condition and sends the subscribe-start group to distribute the successful access result, and prompts the next time slot; repeating till all basic access units end; the central node sends business groups or polling-control group and prompts the follow-up successful node to transmit business group till all successful node end, and goes into next stage. This invention has large channel throughput, small access time delay, low abandoning rate, and well service quality.

The master arm includes two parallel branches (1, 2), preferably symmetric, joining together at a control wrist (7). The branches are formed of segments (3, 4, 5, 6), the first (3) of which extend from a common base (8), and moving away from the base such that the branches move apart from each other and prevent the appearance of kinetic singularities.

The invention relates to an impact-free gear shift control method and system for an electrically driven mechanical transmission without a synchronizer. The electrically driven mechanical transmission is provided with no synchronizer; a drive motor and the electrically driven mechanical transmission are directly coupled, and a clutch between the drive motor and the electrically driven mechanical transmission is omitted. An automobile controller determines the target gear and sends a gear shift instruction to a system coordinating controller; the system coordinating controller coordinates the working sequence and working mode of a dual target tracking controller and a rule-based controller, so that the drive motor and the electrically driven mechanical transmission are in coordinated fit to achieve gear shift; and by accurately controlling a motor rotor, a target joint gear ring accurately tracks rotation of a joint sleeve in the joint process, the requirements for zero rotation speed difference and zero rotation corner difference are met, and impact-free gear shift control is achieved. The method and system can eliminate collision between the joint sleeve and the joint gear ring in the joint process, then gear shift impact is restrained, and the power failure duration is shortened.

Apparatus for handling test number collisions comprises program code stored on computer readable media. The code, in response to a collision between first and second test numbers, automatically adjusts the second test number in response to a collision tracking value associated with the first test number, thereby eliminating the collision. Also in response to the collision, the code updates the collision tracking value. Other methods and apparatus for handling test number collisions are also disclosed.

The invention discloses a quick change floating tool for robot casting polishing. The quick change floating tool for robot casting polishing comprises a mounting plate, a tool plate, and multiple floating tools mounted on the tool plate; the detachable tool plate is mounted on the mounting plate; the floating tools comprise spring pressing plates, and positioning blocks fixed thereon; the spring pressing plates are mounted on the tool plate through floating mechanisms; and workpieces to be machined are positioned through the spring pressing plates and the positioning blocks. The floating mechanisms comprise bolts and springs; through holes for enabling the bolts to pass through are formed around the spring pressing plates; the tool plate is provided with thread holes corresponding to the through holes; the bolts are sleeved with the springs after penetrating through the through holes, and are tightened in the thread holes; the bolts are locked on the tool plate through locking the nuts; and the spring pressing plates can move up and down through the springs. As the workpieces are positioned and clamped on the floating tools, when the workpieces are taken and placed, the damage to grippers and the workpieces caused by direct contact of robot grippers and the workpieces can be effectively reduced, and huge economical benefits can be gained for enterprises.