286 results about "Loop device" patented technology

An access control agent is advantageously deployed at a host device to prevent malicious use of a storage system by unauthorized hosts and users. In one embodiment the access control agent is disposed in a processing path between the application and the storage device. An application is mounted as an image file by a loop device to provide a virtual file system. The virtual file system is populated with access control information for each block of the file. Application I/O requests are mapped to physical blocks of the storage by the loop device, and the access control information is used to filter the access requests to preclude unauthorized requests from being forwarded to the storage client (and consequently the storage devices). With such an arrangement, access rights can be determined at I/O accesses, file and block granularity for each user.

Methods and apparatus for Fibre Channel interconnection is provided between a plurality of private loop devices through a Fibre Channel private loop device interconnect system. In the preferred embodiments, the Fibre Channel private loop device interconnect system is a fabric or an intelligent bridging hub. In one aspect of this invention, a Fibre Channel private loop device is connected to two or more Arbitrated Loops containing, or adapted to contain, one or more private loop devices. Preferably, the interconnect system includes a routing filter to filter incoming Arbitrated Loop physical addresses (ALPAs) to determine which Fibre Channel frames must attempt to be routed through the fabric. Numerous topologies of interconnect systems may be achieved. In another aspect of this invention, a method is provided for implementing a logical loop of private loop devices by segmenting the logical loop into a plurality of sets, assigning each set to a physical Arbitrated Loop and connecting the Arbitrated Loops to a Fibre Channel private loop device interconnect system. Additional methods are provided for restricting attached devices to Arbitrated Loop physical addresses within certain ranges. Additionally, methods are provided for resetting hosts, the method generally comprising the steps of detecting the addition of a storage device to a first Arbitrated Loop, and thereafter, resetting the Arbitrated Loop or loops on which a host or hosts reside on second Arbitrated Loop. Methods for operation with use of SCSI initiators generate a link service reject when no address match is found, or when an address match is found, but where no device with the destination ALPA exists on the Arbitrated Loop corresponding to the destination.

Disclosed are a delay-locked loop circuit and a semiconductor integrated circuit device of reduced power consumption, the delay-locked loop circuit having a tCK/2 generating DLL and an input/output-compensating DLL. The tCK/2 generating DLL includes first and second delay lines for delaying a frequency-divided clock input thereto from a frequency dividing circuit; a first phase detector for detecting the phase difference between the frequency-divided clock and the output of the second delay line; and a counter for outputting a signal that changes over the output taps of the first and second delay lines depending upon an output from the first phase detector. The input/output-compensating DLL includes third and fourth delay lines for delaying the frequency-divided clock input thereto; a multiplexer, to which output signals from the third and fourth delay lines are input, for outputting a signal in which timings of rising and falling edges are decided by rising edges of respective ones of the output signals and then by falling edges of respective ones of the output signals; a dummy multiplexer to which this output signal is input and having a delay time identical with that of a multiplexer that selects data; a dummy first buffer having a delay time identical with that of an output buffer; a dummy second buffer having a delay time identical with that of an input buffer; a second phase detector for detecting the phase difference between an output clock from the input buffer and the output of the dummy second buffer; and a counter for outputting a signal that changes over the output taps of the third and fourth delay lines depending upon an output from the second phase detector.

The present invention discloses a dry method for refining balsam and essential oil from aromatic plants, aromatic plants are refined and put in a device, a heating chamber (4) is connected with an evaporating chamber (1) through a pipeline, the evaporating chamber (1) is connected with an extraction chamber (2) through a pipeline, the extraction chamber (2) is connected with a blower (3) through a pipeline, the blower (3) is connected with the heating chamber (4) through a pipeline, and a sealed circulation loop device is formed. The hot blast temperature is controlled between 60 DEG C and 90 DEG C, the wind speed is controlled at 1 meter to 15 meters per minutes, the inlet temperature of a condensing reed pipe (23) is 3 DEG C to 25 DEG C, and balsam and essential oil can be collected in a discharge pipe(24). In the present invention, no water, special gas and organic solvent are added into raw material, balsam and essential oil which are refined are uncorrupt in smell, small in equipment volume, simply in art, high in efficiency, low in energy consumption, simply in operation and high in production efficiency; no pollution material is discharged, no cooking water and steam are consumed, balsam after being refined can be used as additive of food, drink and condiment, and used for hairdressing, face-painting, bath, and health care, in addition, the aromatic plants after being refined balsam and essential oil is in the dry shape and reserved in a whole, then can be used sequentially, thereby saving resources.

A method and a device for production of fullerene-related carbon nanotubes and fullerenes in direct current arc discharge between two graphite electrodes are disclosed. Two features distinctive from conventional arc discharge technique providing remarkably high productivity of the present method are introduced. The first feature comprises means for maintaining an optimal temperature of anode end surface to suppress formation of large carbon clusters and micro-crystallite carbon particles useless for synthesis of carbon nanotubes and fullerenes. The second one comprises means for maintaining an optimal concentration of carbon and catalyst vapor in vapor generation zone to ensure optimal yields of carbon nanotubes and fullerenes. Airtight plug-in cartridges are used to supply consumable electrodes and catalyst material inside closed-loop device without process being stopped. The means to perform automatic continuous feeding of consumable electrodes and catalyst, pneumatic transportation of condensables and their automatic continuous discharge are also described.

The invention discloses a hybrid pipelining device used for video coding, which comprises a prefetched data acquisition device, a mode selector, a reconstruction loop device and an entropy coder. The reconstruction loop device comprises an intra-frame predictor, an inter-frame predictor, a differential reconstruction device and a deblock filter; data of the same macro block is processed through the prefetched data acquisition device, the mode selector, the reconstruction loop device and the entropy coder sequentially in different timeslices; and in the same timeslice, the prefetched data acquisition device, the mode selector, the reconstruction loop device and the entropy coder process the data of four different macro blocks. The hybrid pipelining device increases the PDR, reduces the area of a memory, and serves the purposes of high definition and real-time coding.

The invention discloses an automatic mapping monitoring system and method of an intelligent substation secondary virtual loop. The method comprises the steps of: firstly, obtaining an SCD file for reading all station devices and carrying out analysis to obtain an included data models and connection relations corresponding to switches and virtual loop devices; creating pixels corresponding to different switches and virtual loop devices so as to form a pixel database; establishing a mapping correlation between the switch pixels and the switches, generating a switch network map indicating switch link connection relations, establishing a mapping correlation between the virtual loop device pixels and the devices, and generating a virtual terminal connection map indicating device link topological connection relations, with an interval serving as a unit; and finally, receiving real-time virtual loop link states uploaded by devices in the intelligent substation in real-time, updating the corresponding switch network map and virtual terminal connection map, and monitoring the link states online. According to the invention, the mapping efficiency of the switch connection map and the virtual terminal connection map can be improved, the online real-time monitoring level is increased, and the operation and maintenance efficiency of the secondary virtual loop is improved effectively.

The invention discloses a method for a virtual SD (Security Digital) card on a device with an android system. The method comprises the steps as follows: 1) downloading a partitioned mirror image document into a Flash memory or a hard disk of the device; 2) finding idle Loop equipment of the android system of the device; 3) sending a user space adding message to the Loop equipment by a Linux kernel of the android system, and enabling the android system to identify the Loop equipment as disk equipment; 4) correlating the Loop equipment with the partitioned mirror image file, and enabling the partitioned mirror image file to serve as memory space of the Loop equipment; and 5) sending a user space partition insertion message to the Loop equipment by the Linux kernel of the android system. Compared with the conventional method of the virtual SD card of the android system, the method has the advantages of easiness for realization, strong adaptability and safety and the like.

The invention discloses a method for synchronizing address resolution protocol (ARP) tables between master and slave virtual router redundancy protocol (VRRP) devices and a VRRP device. The method comprises the following steps: after ARP tables in three layers of examples or three layers of virtual private networks (L3VPN) corresponding to a VRRP protection group are packaged into a message by the master VRRP device, the message is transmitted to the slave VRRP device; the received message is analyzed by the slave VRRP device, and the carried ARP table is loaded on the ARP table corresponding to the locality. The VRRB device comprises an ARP table message generating module, an ARP table message transmitting module, an ARP table message analyzing module and an ARP table loading module. After adopting the method provided by the invention, the ARP tables between the master and slave VRRP devices are synchronous through the ARP table information message and are supported on the master and slave VRRP devices, and the method has no additional requirement about an access loop device.

The invention discloses an intelligent dual-power automatic transfer switch, which relates to a loop device with an automatic conversion function for disconnecting a distribution system from a normal power supply and connecting the distribution system with a standby power supply. The switch comprises a control part and an execution part. The control part mainly comprises a singlechip, a voltage transformer, a booster circuit, a photoelectric coupler, a key, a liquid crystal display (LCD) and a chip 74LS164. The execution part mainly comprises a motor, a mechanical interlocking structure and a circuit breaker. In the switch, the control part is formed by taking the singlechip as a core, variations of corresponding voltage and frequency parameters of two paths of input power can be automatically detected, logic judgments are made, and when a power supply system has abnormal voltage or frequency, the motor rotates and the mechanical interlocking structure drives the circuit breaker to act to realize the automatic transfer of the power supplies, thereby overcoming the shortcoming that a load circuit cannot be automatically transferred from an abnormal power supply to another normal power supply when the power supply system has the abnormal voltage or frequency in the prior art.

The invention discloses a grounding grid breakpoint diagnostic method based on a transient electromagnetic abnormal ring principle. The method comprises the steps of: according to a position to be detected, finding out one grid in the shape of a Chinese character 'tian' which covers the detected position; establishing a coordinate system in an effective detection area above the tian-shaped grid; placing a plurality of detecting lines in the effective detection area, and requiring the detecting lines to be symmetrical about the middle lines of the tian-shaped grid; determining coordinates of detecting points on each detecting line, and requiring consistency between the intervals of all the detecting points of the detecting lines and the positions of the detecting points; adopting a center loop device to coincide central points of emitting coils with receiving coils and the detecting points, carrying out measurement along one detecting line point by point, and obtaining measurement data; and drawing a secondary sensing voltage map of different detecting points of each detecting line at different sampling moments, and judging the positions breakpoints according to the rules of the breakpoints existing at different positions of the tian-shaped grounding grid. By adopting the method, the breakpoint diagnose can be directly carried out by means of the measured secondary sensing voltages under that condition that the normal operation of a power system is ensured.

The invention relates to method and device for testing the performance of an Ethernet port. The method comprises the following steps: a centre processor of data equipment to be tested automatically creates a test flow region; the centre processor of the data equipment to be tested sends at least one broadcast data packet to an Ethernet port to be tested of the data equipment to be tested; the broadcast data packet is forwarded in the test flow region under the control of a single port loop device so as to carry out performance test. The device comprises the data equipment to be tested and thesingle port loop device, wherein the data equipment to be tested is used for automatically creating the test flow region and sending the broadcast data packet to the Ethernet port to be tested of thedata equipment to be tested; and the single port loop device is connected with the data equipment to be tested and used for forwarding the broadcast data packet in the test flow region. Therefore, theinvention proposes that a CPU issues a few packets to enable the test of the Ethernet port to meet the full flow requirement in the way of broadcast storm of a signal port and the rapid starting andstopping control of storm is realized without using a data test instrument.

The invention discloses an interference measurement method and an interference measurement system for a vortex beam. The interference measurement system comprises a vortex beam generating unit, a control unit, a vortex beam modulation unit, a conjugate vertex beam interference unit and an image acquisition unit. The vortex beam generating unit is used for generating a vortex beam. The control unit is used for changing the propagation optical path of the vortex beam. The vortex beam modulation unit is used for modulating the topological charge of the vortex beam. The conjugate vertex beam interference unit is used for splitting one vortex beam to two split vortex beams and converting one split vortex beam to the conjugate vortex beam of the other split vortex beam, and then performing interference on the split vortex beam and the conjugate vortex beam. The image acquisition unit is used for acquiring an interference strength graph of the two conjugate vortex beams and acquiring the order and the symbol of the topological charge of the vortex beam through analyzing the acquired data. The invention provides the simple integer and semi-integer topological charge interference measurement system without an interference influence introduced by a device through an improved M-Z interferometer and a square loop device which carries a vortex phase plate (VPP).

A dynamic advertising display device includes a housing having a number of rotatable rods and two followers attached to upper and lower portions of each rod, two transmission belts having projections engaged around the followers of the rods to couple the followers of the rods together, and two or more display panels coupled together to form an endless displaying member and attached to the belts, to allow the display panels to be moved in concert with the belts and to be moved around the rods. A driving device may drive the rods to move the display panels around the rods, for advertising purposes. The display panels may be detachably coupled together with hook and loop devices.

The invention discloses a continuous casting and continuous extrusion device and a production method for a metal, wherein the device comprises a melting furnace, a maintaining furnace, a continuous casting machine, a continuous extruding machine, an anti-oxidation thermal insulation device and a loop device. In the production method, molten metal is poured into a molten metal pond of the continuous casting machine, and the molten metal is cooled and solidified in a compulsive water-cooling crystallizer; a dragger pulls out a casting blank from the crystallizer with certain speed; and the casting blank pulled out is conveyed into the continuous extrusion machine set after passing through the anti-oxidation thermal insulation device. In the method, since the cast metal with afterheat can becontinuously extruded in a direct way, at this moment, the metal has higher plasticity and lower resistance to deformation, greater deformation can be realized with less energy, and energy can be saved; and the device and the method provided by the invention are particularly suitable for the metal and alloy thereof which need to be preheated before continuous extrusion, so that types of alloys processed by continuous extrusion are increased. With the device and the method, multiple work procedures are combined, short flow is implemented, production cycle can be shortened by more than 50%, andproduction efficiency is improved.