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31results about How to "Performance limitations" patented technology

Light spectrum and spatial information bonded high spectroscopic data classification method

Disclosed is a hyperspectral data classification method which is combined spectrum and spatial information. The steps comprises (1) reading the hypersectral data, (2) confirming the minimum size of structural element, (3) calculating differentiation between picture elements in neighborhood of each structural element by extended mathematical morphology expansion and corrosion operation, (4) obtaining exponential value of morphology eccentricity by the extended expansion and the corrosion operation of step (3), (5), constantly repeating the above steps with the adding of the size of the structural element to achieve the maximum size of the structural element, (6), constantly updating the exponential value MEI of morphology eccentricity in iteration process via the obtained new value, and generating a final exponential value MEI of morphology eccentricity after the iteration process is finished, (7) realizing the extraction of the data characteristic by the image of the exponential value MEI of morphology eccentricity, namely generating ground object type information, and realizing sophisticated category of the ground object by a minimum-distance classifier. The method is an unsupervised classification method for hyperspectral ground object with strong stability, high reliability and high accuracy.
Owner:BEIHANG UNIV

Expansion morphology and orthogonal subspace projection combined end member automatic extraction method

The invention relates to a method for automatically extracting end members by combination of expanding morphology and orthogonal subspace projection, which comprises the following steps: (1) reading high-spectrum data; (2) determining the dimension, the initial iteration and the maximum iteration of a structural element; (3) calculating pixels with minimum mixing degree and maximum mixing degree in neighboring areas of the structural element through expansion and corrosion operations; (4) calculating and obtaining the morphological eccentricity index value through the result obtained in the step (3); (5) repeating the step (3) and the step (4) along with the increase of the iteration, and utilizing the result of expansion operation in the step (3) to update image data until the maximum iteration is reached; (6) performing binaryzation on MEI images and obtaining an end member data set; (7) calculating and obtaining a first end member by a spectral corner matching method, and updating the end member data set by the projection in an orthogonal subspace of the obtained end member; and (8) repeating the step (7) until the error requirement is met. The invention is a method for automatically extracting the high-spectrum end members with strong stability, high reliability and high precision.
Owner:BEIHANG UNIV

WDM passive optical network system capable of supporting quadruple service conveying function

The invention relates to a wavelength division multiplexing passive optical network system which supports quadruple service transmission function and belongs to the field of optical communication technology; wherein, after being transmitted through a first feeder fiber, optical signals output from an optical line terminal are sent to a multiplexing interface of a first arrayed waveguide grating in a node of a distal end; the de-multiplexing interface of the first arrayed waveguide grating is connected with an input interface of an optical network unit with corresponding wavelength channels; optical signals output from the output terminal of the optical network unit are sent into a de-multiplexing interface of a second arrayed waveguide grating with corresponding wavelength channels in the node of the distal end, are output by the multiplexing interface of the second arrayed waveguide grating and are transmitted into the optical line terminal through a second feeder fiber. The network system can realize the integration of quadruple services of wireless access, voice, video and data to the same wavelength division multiplexing passive optical network and can effectively reduce the allocation cost, optimize the system structure as well as provide diversified services for users.
Owner:SHANGHAI JIAO TONG UNIV

Temperature-sensitive hepatic cell culture support material and preparation method thereof

The invention discloses a temperature-sensitive hepatic cell culture support material and a preparation method thereof, and relates to an intelligent tissue engineering support material and technology, in particular to a temperature-sensitive hepatic cell culture support material, a method and technology. The support material is characterized in that: the surface of the material is relatively lyophobic at the temperature of 37 DEG C and is suitable for cell adherence / spreading and cell propagation, but the surface is hydrophilic at the temperature of 32 DEG C, so cells are desorbed from the surface automatically. The preparation method of the cell culture support material comprises the following steps of: (1) surface cleaning; (2) the temperature-sensitive carboxylation modification of a TCPS surface; (3) the preparation of amido lactobionic acid (L-NH2); and (4) the saccharifying modification of the TCPS surface. Through the preparation method, the biocompatibility and cell-bound loci of the support material are enhanced, the adsorption rate of the cells on the material surface is increased, and the intelligent support material which is suitable for hepatic tissue engineering is obtained.
Owner:TIANJIN POLYTECHNIC UNIV

Method and device for guaranteeing security of POS machine firmware

The invention is suitable for the technical field of terminals, and provides a method and device for guaranteeing the security of POS machine firmware. The method includes the steps that according to the type of a CPU, a loading mode corresponding to the type of the CPU is preset, and according to the loading mode, first stage starting firmware is loaded by selecting an embedded multi-medium card e MMC starting medium. With the method, loading from other starting media capable of being connected with the exterior can be avoided; it is prevented that through the starting media, the firmware in a POS machine is replaced or tampered, and therefore it is guaranteed that the POS machine meets the requirement for security.
Owner:PAX COMP TECH SHENZHEN

Media stream processing method, system and home gateway

The invention provides a media stream processing method and system and a home gateway. The method comprises the following steps that: the home gateway receives a calling request; the home gateway consults with an external network terminal through an SIP (Session Initiation Protocol) to determine a port for both parties to receive media streams; the home gateway specifies a port used for receiving data streams for a first media terminal, establishes an NAT (Network Address Translation) forwarding mapping relation between a port used by the home gateway and a port used by the first media terminal, and transmits the port used by the first media terminal, an IP (Internet Protocol) address of the external network terminal and a port used by the external network terminal to the first media terminal; the home gateway receives incoming call media streams transmitted by the external network terminal and forwards the incoming call media streams to the first media terminal according to the NAT forwarding mapping relation; and the home gateway receives outgoing call media streams transmitted to the external network terminal by the first media terminal and forwards to the external network terminal. By adopting the technical scheme of the invention, a visual telephone service can be realized in a home network or a similar network environment, and various problems existing in the prior art are solved.
Owner:CHINA UNITED NETWORK COMM GRP CO LTD

Image acquisition method and system for panorama image

The invention discloses an image acquisition method and system for a panorama image. The image acquisition method comprises an image acquisition step in a camera pitching and / or horizontal direction,wherein the image acquisition step in the camera pitching direction comprises the following steps: S11, shooting a first pitching image by taking a camera pitching angle as beta1, and shooting a second pitching image by taking a camera pitching angle as beta2 and in the same camera horizontal angle when the first pitching image is shot; S12, calculating a first overlapping degree of the second pitching image on the first pitching image; and S13, judging whether the first overlapping degree is higher than or equal to an overlapping degree threshold value, if yes, taking a target camera pitchingangle (described in the specification) as beta2, shooting an image by a camera in the target camera pitching angle (described in the specification), if not, assigning a value of (beta2-beta0) to beta2, wherein beta0 is a first decrease angle, and returning to the step S11. The image acquisition method disclosed by the invention improves splicing success rate and image acquisition efficiency and can be applied to the field of shooting of panorama images of unmanned aerial vehicles.
Owner:上海同繁勘测工程科技有限公司

A method and a device for scheduling Pod

The invention discloses a method and a device for scheduling Pod. The method comprises the following steps of: creating a Pod at a master node of a Kubernetes system; and obtaining position information of a Worker node of the Alluxio storage system where the resource data for creating the Pod is located, and scheduling the Pod to be created on the Worker node of the Alluxio storage system corresponding to the position information. The method comprises the following steps of: creating a Pod at a master node of a Kubernetes system; acquiring position information of a Worker node where resource data for creating the Pod is located; the Pod application can directly use the memory data through the Worker node and then the Pod creation is dispatched to the Worker node, so that the limitation ofthe network transmission rate on the performance of the Aluxio system is avoided, and the performance improvement caused by the use of the Aluxio system is maximized.
Owner:ZHENGZHOU YUNHAI INFORMATION TECH CO LTD

Reading command acceleration method and device of NVMe SSD main control chip, computer equipment and storage medium

The invention discloses a read command acceleration method and device of an NVMe SSD main control chip, computer equipment and a storage medium. The method comprises the steps that read data command information is cached in an acceleration module, and NFC is notified; the NFC reads corresponding data information from the flash according to the command information and sends the data information tothe acceleration module; and the acceleration module sends the processed valid data to the host. The limitation of the DDR reading and writing speed on the overall performance is avoided, and the usefrequency of a CPU is reduced, so that the data reading performance of the SSD main control chip is improved.
Owner:SHENZHEN YILIAN INFORMATION SYST CO LTD

Motor vehicle having an air-conditioning compressor as a starter of the internal combustion engine

The invention relates to a motor vehicle (10), comprising an internal combustion engine (14) and an air-conditioning system (38), which comprises an electric motor (42), which is designed to drive a compressor (40) of the air-conditioning system (38) in order compress a cooling fluid. A controllable coupling device (46) is designed to mechanically couple the electric motor (42) of the air-conditioning system (38) to the internal combustion engine (14) in dependence on a control signal. The electric motor (42) is accordingly designed to drive the internal combustion engine (14) as an electric starter in the state in which the electric motor is coupled to the internal combustion engine (14). The aim of the invention is to ensure stable operation of low-voltage loads (54) in the motor vehicle (10) when the compressor motor (42) of the air-conditioning system (38) is used to start an internal combustion engine (14). According to the invention, an inverter (44) of the electric motor (42) of the air-conditioning system (38) is designed to operate the electric motor (42) directly by means of a high voltage of a high-voltage vehicle electrical system (26) of the motor vehicle (10).
Owner:AUDI AG

6XXX series aluminum alloy and aging process thereof

The invention belongs to the technical field of aluminum alloy processing, and particularly relates to a 6XXX series aluminum alloy and an aging process thereof. The aging process of the 6XXX series aluminum alloy comprises first-stage low-temperature pre-aging and second-stage high-temperature aging, wherein the temperature of the first-stage low-temperature pre-aging is 80 to 150 DEG C. The low-temperature pre-aging treatment provided by the invention, on the one hand, causes a large number of pre-beta" phases to be dispersively distributed in the alloy, and these pre-beta" phases are directly transformed into beta" phases in a subsequent aging process; on the other hand, the size of nano-scale atomic clusters formed in an original parking process is further increased, so that the nano-scale atomic clusters can provide nucleation positions for the nucleation of the beta" phases in the subsequent aging process; therefore, the precipitation density of the beta" phases in the final agedalloy is promoted, the uniform distribution of the beta" phases is promoted, the purpose of eliminating the quenching and parking effect is achieved, and at the same time, the final mechanical properties of the aluminum alloy are improved, and the task scheduling problem caused by the production capacity limitation of an enterprise is solved.
Owner:CRRC QINGDAO SIFANG CO LTD

Fiber grating sensor package structure and packaging method suitable for high-temperature environment

The invention relates to a fiber grating sensor package structure suitable for a high-temperature environment. The fiber grating sensor package structure comprises an upper layer package and a lower layer package; the lower layer package is provided with an optical fiber placement portion; two optical fiber fixing through holes which are spaced apart are formed in the lower layer package; the optical fiber placement portion is divided into a first placement portion, a second placement portion, and a third placement portion through the optical fiber fixing through holes; the first placement portion is located between the two optical fiber fixing through holes; the groove depth of the first placement portion is greater than the groove depths of the second placement portion and the third placement portion; the upper layer package includes two adhesive injection portions; the two adhesive injection portions are respectively corresponding to the two optical fiber fixing through holes; and adhesive injection holes are formed in the tops of the adhesive injection portions. The invention also provides a fiber grating sensor packaging method suitable for a high-temperature environment. Whenthe package structure of the invention is installed, a fiber grating sensor is directly bonded to a device to be tested, and therefore, measurement error caused by the problem of strain transmissioncan be avoided; and a two-point type bonding method is adopted, and therefore, the influence of an adhesive on the performance of the fiber grating sensor can be avoided.
Owner:HARBIN INST OF TECH

Display screen, manufacturing method of display screen and electronic equipment

The invention discloses a display screen, a manufacturing method of the display screen and electronic equipment, and belongs to the technical field of display equipment. The display screen comprises a light emitting layer, wherein the light emitting layer comprises an infrared display region, the infrared display region comprises a first visible light emitting unit and an infrared light-emitting unit, the first visible light emitting unit is provided with a mounting hole, the infrared light-emitting unit is arranged in the mounting hole, a light filtering layer and the infrared light emitting unit are oppositely arranged, and the projection of the filter layer towards the light-emitting layer covers the infrared light-emitting unit. According to the display screen, the problem of poor performance of an infrared device below the display region of the display screen can be solved.
Owner:VIVO MOBILE COMM HANGZHOU CO LTD

Transverse-structure IMPATT diode and preparation method thereof

ActiveCN111739947AReduced ionized impurity scatteringEnhanced low field mobilitySemiconductor/solid-state device manufacturingDiodePhysicsEngineering
The invention discloses a transverse-structure IMPATT diode and a preparation method of the IMPATT diode. The IMPATT diode includes: a substrate layer, an epitaxial layer, a drift layer, an n-AlGaN barrier layer, an n+-GaN barrier layer, a left ohmic contact layer, a right ohmic contact layer, a left ohmic contact electrode, a right ohmic contact electrode, a passivation layer and a Schottky contact electrode. When the transverse-structure IMPATT diode is electrified, the current direction is along the transverse direction of the epitaxial layer; the drift layer is a two-dimensional electrongas thin layer formed on the top of the epitaxial layer, and the transition process is limited in the drift layer rather than in a body material. The IMPATT provided by the invention improves the oscillation frequency, the transverse circuit compatibility and the frequency flexibility compared with a traditional vertical-structure IMPATT by utilizing a transverse structure under the same material.
Owner:NORTHWEST UNIV

A kind of 6xxx series aluminum alloy and its aging process

The invention belongs to the technical field of aluminum alloy processing, and in particular relates to a 6XXX series aluminum alloy and an aging process thereof. The aging process of the 6XXX series aluminum alloy includes: a first-stage low-temperature pre-aging and a second-stage high-temperature aging; the temperature of the first-stage low-temperature pre-aging is: 80‑150°C. On the one hand, the low-temperature pre-aging treatment of the present invention causes a large number of pre-β" phases dispersedly distributed in the alloy, and these pre-β" phases are directly transformed into β" phases in the subsequent aging process; on the other hand, the original parking process The size of the nano-scale atomic clusters formed in the alloy is further increased, so that it can provide nucleation sites for the nucleation of the β" phase in the subsequent aging process; thus promoting the precipitation density of the β" phase in the final aging state alloy, and promoting the β "The uniform distribution of the phase achieves the purpose of eliminating the quenching parking effect, improves the final mechanical properties of the aluminum alloy, and solves the task scheduling problem caused by the limited production capacity of the enterprise.
Owner:CRRC QINGDAO SIFANG CO LTD

Media stream processing method and system and home gateway

The invention provides a media stream processing method and system and a home gateway. The method comprises the following steps that: the home gateway receives a calling request; the home gateway consults with an external network terminal through an SIP (Session Initiation Protocol) to determine a port for both parties to receive media streams; the home gateway specifies a port used for receiving data streams for a first media terminal, establishes an NAT (Network Address Translation) forwarding mapping relation between a port used by the home gateway and a port used by the first media terminal, and transmits the port used by the first media terminal, an IP (Internet Protocol) address of the external network terminal and a port used by the external network terminal to the first media terminal; the home gateway receives incoming call media streams transmitted by the external network terminal and forwards the incoming call media streams to the first media terminal according to the NAT forwarding mapping relation; and the home gateway receives outgoing call media streams transmitted to the external network terminal by the first media terminal and forwards to the external network terminal. By adopting the technical scheme of the invention, a visual telephone service can be realized in a home network or a similar network environment, and various problems existing in the prior art are solved.
Owner:CHINA UNITED NETWORK COMM GRP CO LTD

A method for testing the normal strength between layers of composite materials

The invention discloses a method for testing the normal strength between the layers of a composite material, and belongs to the technical field of composite materials and material performance testing.According to the method, the specimen is a square flat plate block-like body; during the paving adhesion, a polytetrafluoroethylene film doing not cover the test area is inserted between the upper paving layer and the lower paving layer of the predetermined testing interface, and curing molding is performed; and the strength between the layers of the composite material is tested by using a testing device. According to the present invention, the method is used for testing the normal strength between the layers of the composite material, and breaks through the limitation on the interlayer performance of the to-be-tested specimen in the conventional method; and the corresponding size of the hollowed-out zone of the PTFE film can be designed according to the interlayer performance of the to-be-tested composite material, such that the normal damage load between the layers in the test can be controlled, and the interlayer damage of the composite material precedes the adhesive damage betweenthe metal block and the specimen so as to ensure the damage mode.
Owner:BEIHANG UNIV

Information system for penetration test and bug repair and method thereof

The invention discloses an information system for penetration test and bug repair and a method thereof, and the system comprises a target system penetration unit which is used for enabling a bug device to penetrate a target system. An intermediate terminal and the information system used for penetration test and bug repair are located in the same office or studio, and the intermediate terminal andthe information system used for penetration test and bug repair are both connected with a receiving terminal of a client. The plurality of electronic documents can be transmitted synchronously, a handshake link can be constructed for each electronic document, and the plurality of electronic documents can share one handshake link. The defects that in the prior art, the use performance is poor dueto the fact that the use rate of a large number of CPUs and memories is consumed, and the performance of synchronously transmitting the first electronic document or the bug repairing unit is greatly limited due to the fact that a current transmission mode is continuously increased along with a test terminal or an intermediate terminal are effectively avoided.
Owner:南京未来产业大数据研究院有限公司

Fiber Bragg grating sensor packaging structure and packaging method suitable for high temperature environment

The invention relates to a fiber grating sensor package structure suitable for a high-temperature environment. The fiber grating sensor package structure comprises an upper layer package and a lower layer package; the lower layer package is provided with an optical fiber placement portion; two optical fiber fixing through holes which are spaced apart are formed in the lower layer package; the optical fiber placement portion is divided into a first placement portion, a second placement portion, and a third placement portion through the optical fiber fixing through holes; the first placement portion is located between the two optical fiber fixing through holes; the groove depth of the first placement portion is greater than the groove depths of the second placement portion and the third placement portion; the upper layer package includes two adhesive injection portions; the two adhesive injection portions are respectively corresponding to the two optical fiber fixing through holes; and adhesive injection holes are formed in the tops of the adhesive injection portions. The invention also provides a fiber grating sensor packaging method suitable for a high-temperature environment. Whenthe package structure of the invention is installed, a fiber grating sensor is directly bonded to a device to be tested, and therefore, measurement error caused by the problem of strain transmissioncan be avoided; and a two-point type bonding method is adopted, and therefore, the influence of an adhesive on the performance of the fiber grating sensor can be avoided.
Owner:HARBIN INST OF TECH

Image processing method and device, computer equipment and storage medium

The invention discloses an image processing method and device, computer equipment and a storage medium, and the method comprises the steps: carrying out the feature extraction of a received first image, and obtaining a plurality of image original features of the first image; generating an identity identification feature of the first image by using the plurality of image original features, determining a feature distance between each image original feature and the identity identification feature, and determining an optimization parameter according to the feature distance; and updating a loss function output result used for iterative training of the image recognition model by using the optimization parameter, wherein the trained image recognition model is used for performing image recognition processing on a to-be-recognized second image. The device can comprise an original feature extraction module, an identification feature generation module, an optimization parameter determination module and a loss output updating module. Compared with the prior art, the image recognition processing capability of the image recognition model can be remarkably improved, and the image recognition effect is remarkably improved.
Owner:SHENZHEN INTELLIFUSION TECHNOLOGIES CO LTD

Positive temperature coefficient polysilicon resistance structure and manufacturing method thereof

The invention provides a positive temperature coefficient polysilicon resistance structure and a manufacturing method thereof. The resistance structure includes several polysilicon unit resistors, and each polysilicon unit resistance includes a non-metallized polysilicon region whose resistance value in the middle region changes with a negative temperature coefficient and The metallized polysilicon area in the end area has a positive temperature coefficient change in resistance value, and the adjacent polysilicon unit resistance is connected to the metal wire with a positive temperature coefficient change in resistance value through a contact hole formed in the end area. In the manufacturing method, by adjusting the ratio of the non-metallized polysilicon region to the metallized polysilicon region, the positive change of the resistance value of the metallized polysilicon region with temperature is greater than or equal to that of the non-metallized polysilicon region. negative variation of . The invention can avoid the limitation of the performance of the semiconductor device, and obtain a higher resistance positive temperature coefficient polysilicon resistance structure without increasing the process burden, ensuring the process stability of the device, and not sacrificing the area.
Owner:SHANGHAI HUAHONG GRACE SEMICON MFG CORP

A message security processing system and method

The embodiment of the invention discloses a message security processing system and method. Among them, the message security processing system includes: a processor, a hardware security co-processing module and a network processing module, the processor is integrated with a software security protocol and a control module; the network processing module is connected to at least one network interface, and receives The message sent to the hardware security co-processing module for security processing; the message fed back after the hardware security co-processing module is processed is sent out through the network interface; the hardware security co-processing module is used to send the received network processing module After the sent message is processed safely, it is fed back to the network processing module. The technical solution of the embodiment of the present invention realizes the effect that message security processing does not need to occupy the running memory of the processor through the interaction between the hardware security co-processing module and the network processing module, so that the processing performance of the message security feature is not affected by the performance of the processor. limit.
Owner:北京物芯科技有限责任公司

WDM passive optical network system capable of supporting quadruple service conveying function

The invention relates to a wavelength division multiplexing passive optical network system which supports quadruple service transmission function and belongs to the field of optical communication technology; wherein, after being transmitted through a first feeder fiber, optical signals output from an optical line terminal are sent to a multiplexing interface of a first arrayed waveguide grating in a node of a distal end; the de-multiplexing interface of the first arrayed waveguide grating is connected with an input interface of an optical network unit with corresponding wavelength channels; optical signals output from the output terminal of the optical network unit are sent into a de-multiplexing interface of a second arrayed waveguide grating with corresponding wavelength channels in thenode of the distal end, are output by the multiplexing interface of the second arrayed waveguide grating and are transmitted into the optical line terminal through a second feeder fiber. The network system can realize the integration of quadruple services of wireless access, voice, video and data to the same wavelength division multiplexing passive optical network and can effectively reduce the allocation cost, optimize the system structure as well as provide diversified services for users.
Owner:SHANGHAI JIAOTONG UNIV

Method and device for ensuring the security of pos machine firmware

The present invention is applicable to the field of terminal technology, and provides a method and device for ensuring the security of POS machine firmware, including: according to the CPU type, preset a loading mode corresponding to the CPU type, and select an embedded multimedia The card eMMC boot media loads the first-level boot firmware. The above method can avoid loading from other bootable media that can be connected to the outside, and prevent the firmware in the POS machine from being replaced or tampered with through the bootable media to ensure that the POS machine meets the security requirements.
Owner:PAX COMP TECH SHENZHEN

Light spectrum and spatial information bonded high spectroscopic data classification method

Disclosed is a hyperspectral data classification method which is combined spectrum and spatial information. The steps comprises (1) reading the hypersectral data, (2) confirming the minimum size of structural element, (3) calculating differentiation between picture elements in neighborhood of each structural element by extended mathematical morphology expansion and corrosion operation, (4) obtaining exponential value of morphology eccentricity by the extended expansion and the corrosion operation of step (3), (5), constantly repeating the above steps with the adding of the size of the structural element to achieve the maximum size of the structural element, (6), constantly updating the exponential value MEI of morphology eccentricity in iteration process via the obtained new value, and generating a final exponential value MEI of morphology eccentricity after the iteration process is finished, (7) realizing the extraction of the data characteristic by the image of the exponential valueMEI of morphology eccentricity, namely generating ground object type information, and realizing sophisticated category of the ground object by a minimum-distance classifier. The method is an unsupervised classification method for hyperspectral ground object with strong stability, high reliability and high accuracy.
Owner:BEIHANG UNIV

Positive temperature coefficient polycrystalline silicon resistor structure and manufacturing method thereof

The invention provides a positive temperature coefficient polycrystalline silicon resistor structure and a manufacturing method thereof. The positive temperature coefficient polycrystalline silicon resistor structure comprises a plurality of polycrystalline silicon unit resistors which each comprise a nonmetallic polycrystalline silicon region and metallic polycrystalline silicon regions, whereineach nonmetallic polycrystalline silicon region is located in a middle region, a resistance value of each nonmetallic polycrystalline silicon region changes with a negative temperature coefficient, the metallic polycrystalline silicon regions are located at end regions, and resistance values of the metallic polycrystalline silicon regions change with a positive temperature coefficient. The adjacent polycrystalline silicon unit resistors are connected with metal wires with resistance values changing with a positive temperature coefficient through contact holes formed in the end regions. According to the manufacturing method, the ratio of the nonmetallic polycrystalline silicon regions relative to the metallic polycrystalline silicon regions is adjusted, and thus the positive changing amountof the resistance values of the metallic polycrystalline silicon regions along with temperatures is greater than or equal to the negative changing amount of the resistance values of the nonmetallic polycrystalline silicon regions along with temperatures. The positive temperature coefficient polycrystalline silicon resistor structure can avoid limitation of the performance of semiconductor devices, and high resistance values can be obtained under the conditions that process burden is not increased, device process stability is guaranteed and the area is not sacrificed.
Owner:SHANGHAI HUAHONG GRACE SEMICON MFG CORP

An art printing machine

The invention discloses an art printing machine. The art printing machine comprises a conveyor belt and two printing mechanisms positioned at symmetric positions on the front side and the rear side of the conveyor belt, wherein the conveyor belt is used for mass movement of a glass bottle, when the glass bottle is in contact with a transverse push plate, blocking pieces are arranged on the conveyor belt, when the glass bottle is in contact with a transverse pushing rod to push the transverse pushing rod, the reaction force of the transverse pushing rod pushes the glass bottle, so that the glass bottle abuts against the blocking pieces, the blocking pieces uniformly distributed on the conveyor belt so as to enable the glass bottles to be uniformly distributed, the printing work of a printing stamp is facilitated, the transverse push rod pushes a lock rod in the process that the transverse push rod is pushed by the glass bottles, the upper end of the lock rod leaves the outer convex part of a flower-shaped groove, a second rotary disc unlocking starts to rotate, the printing stamp is used for carrying out printing work on the side surface of the glass bottles, the opening of the printing stamp is controlled by the glass bottles pushing the transverse pushing rod, and the precision and reliability are achieved.
Owner:SHANGQIU NORMAL UNIVERSITY

Data processing circuit with multiplexed memory

A data processing apparatus contains several processing circuits each operating under control of its own periodic clock signal, so that the clock signals may have different frequencies and / or can be autonomous. The several processing circuits each have an output for outputting memory access requests, which remain at the output for a validity duration interval defined by the clock signal of the particular processor. A multiplexing circuit multiplexes the access requests to a memory. The memory needs a minimum memory repetition period before it can accept an access request following acceptance of a preceding access request. The clock periods of the processing circuits are longer than the minimum memory repetition period. A timing circuit selects acceptance time points at which each particular access request from a first data processing circuit is accepted.
Owner:卡莱汉系乐有限公司

A kind of lateral structure impatt diode and preparation method thereof

The invention discloses a lateral structure IMPATT diode and a preparation method thereof. The IMPATT diode comprises: a substrate layer, an epitaxial layer, a drift layer, an n-AlGaN barrier layer, an n+-GaN barrier layer, a left ohmic contact layer, and a right ohmic contact layer , left ohmic contact electrode, right ohmic contact electrode, passivation layer, Schottky contact electrode, lateral structure IMPATT diode The current direction is along the lateral direction of the epitaxial layer when the diode is energized, and the drift layer is a two-dimensional electron gas thin layer formed on the top of the epitaxial layer , the transition process is limited to the drift layer instead of taking place in the bulk material. The IMPATT proposed by the present invention utilizes the lateral structure. Under the same material, the oscillation frequency, lateral circuit compatibility, and frequency flexibility of the traditional vertical structure IMPATT are improved. .
Owner:NORTHWEST UNIV

Message security processing system and method

The embodiment of the invention discloses a message security processing system and a method. The message security processing system comprises a processor, a hardware security co-processing module anda network processing module, and the processor is integrated with a software security protocol and a control module; the network processing module is connected with at least one network interface, andsends the message received from the network interface to the hardware security co-processing module for security processing; a message fed back after processing of the hardware security co-processingmodule is completed is sent out through a network interface; and the hardware security co-processing module is used for performing security processing on the received message sent by the network processing module and feeding back the message to the network processing module. According to the system of the embodiment of the invention, through interaction between the hardware security co-processingmodule and the network processing module, the effect that the message security processing does not need to occupy the running memory of the processor is realized, so that the processing performance of the message security characteristic is not limited by the performance of the processor.
Owner:北京物芯科技有限责任公司
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