294results about How to "Save storage space" patented technology

The invention discloses a chip security access control method, device and system and a chip. The control method comprises the following steps: when the chip is coupled with access equipment through a debugging interface, detecting an access request through the debugging interface and acquiring an access object of the access request; obtaining a first verification key or a second verification key based on an access object of the access request, and executing first verification or executing second verification based on the first verification; wherein the first verification key and the second verification key are generated based on a unique user identifier of an electronic device of the chip, the first verification key is associated with the first safety circuit, and the second verification key is associated with the second safety circuit; and controlling the first safety circuit or the second safety circuit to be switched on or switched off according to a result of the first verification or the second verification.

The invention provides a supporting leg system and an engineering machine. The supporting leg system comprises a supporting leg box, the supporting leg mechanism comprises a first supporting leg arm, a second supporting leg arm, a rotary driving part and a telescopic driving part, the first supporting leg arm is hinged to the supporting leg box, and the second supporting leg arm is arranged in the first supporting leg arm in a penetrating mode; the rotation driving piece and the telescopic driving piece are both electrically connected with the controller, and the controller is configured to obtain a supporting leg control instruction; under the condition that the supporting leg control instruction is obtained, the rotation driving part is controlled to drive one arm of the supporting leg to rotate relative to the supporting leg box according to the supporting leg control instruction; acquiring an avoiding angle range, a driving angle range and a current angle of one arm of the landing leg; when it is determined that the current angle is within the avoiding angle range, the telescopic driving part is shut down; and under the condition that the current angle is determined to be within the driving angle range, the telescopic driving part is controlled to perform telescopic driving according to the current angle. The safety of the landing leg system can be improved while the large span is achieved.

This utility model discloses a folding stool, including a seat frame, a backrest, and legs. The backrest is rotatably mounted to the seat frame via a first pivot, and the legs are hinged to the seat frame via a first adjustment assembly. The first adjustment assembly has a limit hole, and the seat frame has a positioning hole corresponding to the limit hole. A rotating pin is inserted into the limit hole and the positioning hole. A second adjustment assembly is provided between the backrest and the seat frame. By providing a second adjustment assembly consisting of a pull plate, a toothed plate, a gear, and a spring, the user can easily adjust the backrest angle by holding the pull plate with one hand to separate the toothed plate from the gear. After releasing the pull plate, the spring automatically resets, causing the toothed plate to re-engage with the gear for quick locking. This structure is not only easy to operate but also achieves stepless adjustment, meeting the user's personalized comfort needs and overcoming the shortcomings of traditional pin-type adjustment which has a fixed angle, is laborious to operate, and is prone to wear.

A device and method for pitting crabapple fruits during deep processing, belonging to the field of fruit processing equipment, is disclosed. One set of rollers has a conveyor belt I on its outer side, and another set of rollers has a conveyor belt II on its outer side, with conveyor belt II located inside conveyor belt I. A rotating shaft is located on the side of each roller, and a bracket is fixedly connected to the shaft. Conveyor belt I has multiple perforations, and conveyor belt II has grooves. An arc-shaped limiting plate and an inclined plate are fixedly connected between the opposing surfaces of two side guard plates. A cylinder is fixedly connected to the upper end of a support plate, and a connecting plate is fixedly connected to the free end of the cylinder. This invention allows for the simultaneous pitting of fruits of different sizes using conveyor belts I and II. After pitting, the fruits can be directly collected according to size, reducing processing steps, saving time, and increasing efficiency. Furthermore, the pitted fruit can be directly transferred to the subsequent processing workshop for production without temporary storage, saving fruit storage space.

The utility model provides a kind of stamping part waste recovery equipment, it is related to waste recovery equipment technical field, including bottom plate, the top fixed mounting of bottom plate has punch press, the inner wall bottom fixed mounting of punch press has conveyer, the outer wall one side fixed mounting of punch press has discharge gate, the top fixed mounting of bottom plate has support.The utility model in this paper, waste is entered inside storage box after transmission machine, when camera finds that the number of waste inside storage box is too much, storage box can be moved by electric sliding block, start to change box work, ensure the continuity and stability of production, then cylinder is driven extrusion plate to descend by piston rod, insert inside storage box, the waste collected is compressed into block, greatly reduce the volume of waste, save transportation and storage space, also promote the recycling of waste, reduce resource waste.

The utility model provides a kind of foldable stainless steel turnover box, comprising: top frame, first hollow groove is arranged on the top frame through slide bar, hinged seat and support rod, the bottom end of the support rod bottom is rotatably connected with bottom frame through mounting shaft, the second hollow groove that is used in cooperation with support rod is set on the bottom frame, metal guard plate is set on the bottom of the top frame through hinge, metal guard plate is rotatably connected in vertical direction, bottom metal guard plate bottom is connected with bottom frame through hinge, slide plate and plug rod are set in the cavity in the inside of the top frame, the plug hole that is used in cooperation with plug rod is set on the hinged seat. The utility model under the action of hinged seat and slide bar sliding connection and support rod and bottom frame rotatable connection, the convenient folding and unfolding of turnover box is realized, storage space is greatly saved;The cooperation of plug rod and plug hole, in combination with the elastic effect of reset spring, the stability of support rod support state is guaranteed, and the use reliability of box body is improved.

This utility model discloses a simple vibration testing device for radio frequency (RF) cable assemblies, relating to the field of RF cable assembly technology. The simple RF cable assembly vibration testing device includes a mounting plate and an adapter component. A through hole is formed at the top of the mounting plate, and a modular adapter holder is positioned at the top of the through hole. The adapter component is mounted on the mounting plate and the modular adapter holder, and includes a movable plate, a spring, a slot, a T-shaped locking block, and a connecting post. A spring is fixedly mounted on one side of the movable plate. A sliding groove is formed at the bottom of the modular adapter holder, within which the connecting post is slidably mounted. A T-shaped locking block is fixedly mounted at the bottom of the connecting post. A limiting groove is formed on one side of the slot, and the protruding end of the T-shaped locking block engages with the limiting groove. The adapter component allows users to replace and adjust the holder as needed, thus saving storage and operating space. This flexibility is ideal for applications requiring frequent vibration testing of different connectors.

The application provides a prefabricated transformer substation, which comprises a transformer substation body, the transformer substation body comprises a base, universal wheels are installed on the bottom of the base, the universal wheels comprise a wheel frame and a wheel body, the wheel frame is hingedly installed on the lower part of the base to drive the wheel body to swing up and down, the base is provided with an avoiding structure, the wheel body has a supporting position and a ground-leaving position on the swinging stroke of the wheel body, the wheel frame is provided with a wheel frame locking structure and a wheel frame unlocking structure, the transformer substation body further comprises rolling bodies, the rolling bodies are used for forming rolling drums in cooperation with the wheel body when the wheel body is in the ground-leaving position, and the rolling bodies and the wheel body are correspondingly arranged on each side of the base, so that the projection of the rolling drums on each side of the base in the up-down direction encloses a closed figure. The prefabricated transformer substation can effectively solve the technical problem that animals easily enter the interior of the prefabricated transformer substation to cause damage due to the lack of a protection device in the prior art.

The invention discloses a multi-rotor aircraft with lift-enhanced wings, which comprises rotor power devices, a fuselage for mounting airborne equipment and connecting the rotor power devices, and a pair of independent and controllable lift-enhanced wings, the high-lift wings are mounted on the fuselage; when the multi-rotor aircraft with the high-lift wings flies, a flight control algorithm controls the tilting angles of the high-lift wings according to the attitude and the flight speed of the aircraft, so that the high-lift wings are in a proper attack angle state, and proper lift force can be provided for the aircraft. The flying speed can be increased, the cruising ability is improved, and transportation and storage are convenient.

The utility model discloses a kind of folding oil absorption felt of cyclically coiled, including oil absorption felt body, folding assembly and cyclic extrusion assembly are installed in oil absorption felt body outside;The folding assembly includes fixed frame connected by fixed shaft, and the fixed frame both sides are equipped with moving groove;The cyclic extrusion assembly includes hand-held push-pull plate and extrusion roller, and the extrusion roller both sides are equipped with connecting rod, and the hand-held push-pull plate both ends are connected in the connecting rod one side by push-pull rod;The utility model is rotated by folding assembly, both sides fixed frame can rotate around fixed shaft, drive oil absorption felt body stable folding, simple operation and structure is stable, can be quickly realized unfolding and stowing, greatly save storage space, convenient to carry and store;In cyclic extrusion assembly, hand-held push-pull plate drives extrusion roller to move extrusion on oil absorption felt surface, can effectively extrude the oil stain absorbed by oil absorption felt, so that oil absorption felt can be reused, realize cyclic function, improve resource utilization.

The utility model discloses an assembly type ground tubular pile steam curing table which comprises a supporting table and a steam curing cover, the upper surface of the supporting table is provided with a containing groove used for containing a tubular pile, the supporting table is formed by sequentially splicing a plurality of supporting table units, and the steam curing cover is formed by sequentially splicing a plurality of steam curing cover units. The end supporting table unit is provided with a steam connector and a pressure release valve, and the steam connector communicates with the containing groove. The tubular pile steam curing table can be quickly assembled on the ground of a workshop, improves the productivity, and has the advantages of being convenient to assemble, capable of meeting the steam curing requirements of tubular piles of different specifications and the like. And the steam-curing table is very convenient to disassemble and store, so that the storage space is saved.

The utility model relates to hairdressing apparatus technical field, especially is involved in a blow straight and blow two -purpose hairdressing apparatus of rolling, including main part, the main part is hollow structure, is integrally arranged with control circuit in the main part, and one end of main part is provided with air inlet, the other end of main part is connected with the air nozzle, make the main part inside form has along the fluid passage of air inlet to air nozzle, is provided with motor and heating unit in fluid passage respectively electric connection in control circuit, fluid passage generates the directional fluid that blows out from air nozzle after along air inlet enters and flows through heating unit through motor, and the air nozzle includes air outlet piece and wind -proof piece, break the limitation of traditional hairdryer straightening device or curling device function single, integrate straightening and curling function in one, satisfy the user diversification hairdressing demand, and the user need not buy straightening and curling tool respectively, save cost and storage space.

The utility model relates to the field of propaganda material, disclose a kind of foldable propaganda material show stand, including storage box, the sliding slot is opened in the storage box inner wall, the sliding block is slidably connected in the sliding slot inner wall, the folding frame is fixedly connected in the sliding block top, the lower display frame is hinged in the folding frame rear side bottom, the upper display frame is hinged in the folding frame front side top, the fixed display frame is fixedly connected in the sliding block front side, the box door is inserted in the storage box top inner wall, the folding frame top inner wall is elastically connected with limiting block by limiting spring. In the utility model, after the expansion of show stand, two groups of lower display frame, two groups of upper display frame and fixed display frame form three-dimensional multilayer display space, can simultaneously display poster, brochure, leaflet and other various forms of public health propaganda material, and the display amount of material is more than doubled than traditional plane show stand, which provides strong support for the effective dissemination of public health knowledge.

The invention relates to a multi-mode intelligent data acquisition system and method for automobile interior odor monitoring. The multi-mode intelligent data acquisition system comprises a terminal shell; the multi-mode sensor array module is integrated in the terminal shell or externally connected through a standard interface and used for synchronously collecting various types of parameters, and an array comprises an environmental parameter sensor, a gas concentration sensor, a selectable visual auxiliary sensor and a technological process sensor interface; the core processing and edge intelligent module comprises a main controller and an edge intelligent unit which are arranged in the terminal shell; the hybrid communication module comprises a wired communication unit and a wireless communication unit which are arranged in the terminal shell; and a power management module. According to the odor consistency monitoring system, data acquisition is completed, real-time and efficient preliminary diagnosis of abnormities is realized through a built-in special algorithm, a hierarchical and collaborative intelligent monitoring network is formed with a cloud system, and the performance and efficiency of the whole odor consistency monitoring system are remarkably improved.

The application discloses an R-2R digital-analog converter with an auxiliary calibration structure and relates to the technical field of high-precision digital-analog conversion. The converter comprises a main DAC, a calibration quantity calculation module, a compensation code generation module, an auxiliary DAC and an operational amplifier circuit. The main DAC converts a digital input into an analog current. The calibration quantity calculation module generates a 15-bit compensation code containing a 1-bit sign bit and a 14-bit data bit through a 24-bit ADC, a comparator and successive approximation logic, and only calibrates the high 12 bits of the main DAC bit by bit, and the low 4 bits do not need to be calibrated. The compensation code generation module generates a total compensation code through gating by a multiplexer and superposition by an adder. The auxiliary DAC is a 14-bit binary current type structure, and realizes bidirectional compensation in cooperation with a positive and negative reference voltage source. The application has the advantages of short calibration period, small storage consumption, no need for additional bias calibration, excellent linearity, and suitability for application in the fields of wireless communication, biological medicine and the like, and meets the application requirements of high resolution and high precision.

This invention discloses a sample introduction and reaction device for detecting pesticide residues in organic solvent extracts using a liquid-phase enzyme inhibition method. The device includes a reaction tube and a cap, which are detachably assembled. The cap seals the reaction tube and contains a hollow column. A sample introduction card is sealed inside the hollow column, and the reaction tube contains enzyme reagents. This invention can be used for the liquid-phase enzyme inhibition method to detect pesticide residues extracted from organic solvents, eliminating interference from organic solvents in the enzyme inhibition detection. The device integrates the sample introduction card and enzyme reagents beforehand, sealing the sample introduction card within the hollow column for easy portability. The hollow column also serves as a support for solvent evaporation from the sample introduction card, facilitating rapid solvent evaporation. The cap and tube serve a dual purpose. This invention features a simple structure, ease of use, simple operation, short detection time, and low cost. It is suitable for on-site testing of large quantities of samples during food distribution and is easy to promote and use.

This application provides a video recommendation method, apparatus, device, and storage medium, relating to the field of communication technology. The method includes: upon receiving a video acquisition request, acquiring a candidate video list; acquiring the interaction probability between the user and each candidate video in the candidate video list, the interaction probability being determined based on the user's reconstructed embedding vector and the candidate video's reconstructed embedding vector; the user's reconstructed embedding vector being determined based on the user's embedding vector, the user's feature vector, and a pre-trained vector reconstruction model; the candidate video's reconstructed embedding vector being determined based on the candidate video's embedding vector, the candidate video's feature vector, and the vector reconstruction model; simulating the input of sample data during cold start when training the vector reconstruction model; and determining the target video to recommend to the user from the candidate video list based on the interaction probability between the user and each candidate video in the candidate video list. This method can accurately recommend videos to users during cold start, improving the video recommendation effect during cold start.

This invention discloses a method, apparatus, device, and medium for implementing causal masking in large model inference, relating to the field of self-attention mechanism technology. The method includes a Virtual Machine Execution Environment (VMPE) performing vector-matrix operations and sending the results to a Softmax Function (SFU); the SFU receiving a command (cmd) from a File Controller (FW) to obtain input data; and the SFU processing the obtained input data based on a preset bitwise operation mask and then performing a Softmax operation. The hardware implementation architecture includes a VMPE responsible for handling vector-matrix operations, an SFU responsible for handling other vector operations, and a File Controller (FW) running on a RISC-V CPU for controlling the DMA, VMPE, and SFU. This application eliminates the need to pre-construct the mask matrix, thus effectively saving storage space.

The novel toy comprises a racket and a ball tool, the racket comprises a handle and a racket face, and one end of the handle is detachably connected with the racket face; the number of the ball tools is at least one, one or more protrusions are arranged on the surface of each ball tool, and the ball tools and the racket are used in a combined mode or in a separated mode. Wherein the handle comprises a holding barrel and a U-shaped spring, the U-shaped spring is arranged in the holding barrel, and an opening of the U-shaped spring is arranged towards the axial direction of the holding barrel. By means of structural innovation, ball hitting, grip strength training and massage functions are integrated, convenience is brought to parent-child interaction, diversity and interestingness of parent-child interaction are increased, ball hitting can be performed by combining ancestral force and grandchild force, grip strength competition can be performed by means of the detached handle, massage can be performed by means of the protrusions of the ball tool, and the ball tool is convenient to use. Therefore, the effects of exercising the fine actions of children, enhancing the grip strength of the old and saving the purchase cost and the storage space of the user are achieved, and the device is extremely competitive in the market.

The technical scheme belongs to the technical field of shopping carts and specifically relates to a folding shopping cart, which comprises a base, a wheel device installed at the lower end of the base, and a pull rod device rotatably connected to the lower end of the base, wherein the pull rod device comprises a pull rod frame one rotatably connected to the lower end of the base, a pull rod frame two rotatably connected to the upper end of the pull rod frame one, and a rotation limiting mechanism movably installed between the pull rod frame one and the pull rod frame two and used for limiting the rotation of the pull rod frame two on the pull rod frame one; the folding of the pull rod device is realized by rotating the pull rod frame two on the pull rod frame one and rotating the pull rod frame one on the base; the storage space is reduced, and the storage and carrying are facilitated; and the pull rod frame one and the pull rod frame two are kept in the unfolded state by adjusting the rotation limiting mechanism, so that the structure is simple and the operation is convenient.

The application discloses a kind of based on GiST spatial index multi-resolution fragmentation DEM database construction method, comprising: S1, with the resolution of fragmentation DEM image tile as hierarchical division standard;S2, existing DEM image tile is hierarchically divided according to S1 hierarchical division standard, to minimum outer rectangle as unit independent storage;S3, based on DEM image tile, the hierarchical structure rule of R tree is used to establish parent-child node relationship, and the initial R tree multi-resolution skeleton is constructed;S4, on the basis of initial R tree multi-resolution skeleton, uniform different hierarchical spatial relationship description rule is formulated, and according to the rule, the spatial correlation between DEM image tile is described, and the preliminary establishment of multi-resolution DEM database based on GiST spatial index is completed;S5, the DEM image tile to be stored is stored into database, and the database is improved.The application improves the performance of DEM data storage.

The utility model provides a folding support of a racing simulator, and belongs to the technical field of supports. The vertical frame assembly is rotationally connected with the bottom frame assembly; the limiting part is arranged on the bottom frame assembly; the first end of the connecting arm assembly is rotationally connected to the bottom frame assembly, and a storage groove is formed in the second end of the connecting arm assembly; when the vertical frame assembly is in a storage state, the connecting arm assembly rotates by a first preset angle in the first rotating direction and then abuts against the limiting part, at the moment, an included angle is formed between the bottom frame assembly and the connecting arm assembly in the vertical plane, and the connecting arm assembly supports the racing simulator folding support on the object placing face. According to the racing simulator folding support, the limiting part is arranged, the connecting arm assembly abuts against the limiting part after rotating by a certain angle, and the included angle is formed between the connecting arm assembly and the bottom frame assembly in the vertical plane, so that standing storage of the racing simulator folding support is achieved, the storage reliability is improved, and the storage space of the racing simulator folding support is reduced.

The utility model discloses a handheld electric welding machine which comprises a shell assembly, an air inlet cavity is formed in the shell assembly in a penetrating mode. The accommodating cavity assembly is arranged on one side of the shell assembly; the control display assembly and the electric welding core assembly are respectively arranged in the shell assembly; the cooling fan is arranged in the shell assembly and arranged on the side edge of the electric welding machine core assembly, and the position of the air inlet end of the cooling fan corresponds to the position of the air inlet cavity. The welding wire feeding assembly is arranged in the shell assembly, is arranged on the side edge of the accommodating cavity assembly and is electrically connected with the electric welding core assembly; the welding gun head penetrates through the shell assembly and is detachably and electrically connected to the welding wire feeding assembly; and the filter screen is detachably connected to the air inlet cavity. According to the handheld electric welding machine, the filter screen is detachably arranged at the air inlet end of the cooling fan, so that the problem that the number of machine faults is large due to the fact that dust of an existing handheld electric welding machine is difficult to clean is effectively solved.

The utility model discloses an inflatable soft unmanned aerial vehicle which comprises a shell mechanism, a pod is arranged at the bottom of the shell mechanism, a cross-shaped air bag body is rapidly inflated through a motor air pump, a four-way connector and a connecting pipe, air pressure is monitored in real time through a pressure sensor, inflation is automatically stopped after a set value is reached, stability is ensured, and when air is exhausted, the air pressure is monitored in real time. Quick deflation can be achieved by opening the electromagnetic valve, and operation is simple and efficient; the cross air bag airframe of the device adopts a soft structure to realize multidirectional impact resistance, the collision action time is prolonged through deformation, the impact force is effectively reduced, the integrity of the unmanned aerial vehicle after collision is guaranteed, the device is particularly suitable for operation in a complex environment, and compared with a traditional rigid structure, the weight of a soft frame is reduced, the portability and endurance are remarkably improved; the high flexibility of the device enables the size to be greatly compressed in a non-working state, the storage space is saved, and in addition, the device is high in adaptability and can be used for narrow or high-risk scenes.

The utility model discloses a cement test block pressure testing machine, and relates to the technical field of material testing devices. The device comprises a crushing box, an L-shaped connecting frame is fixed on the surface of the crushing box; a mounting groove is formed in the inner top surface of the L-shaped connecting frame; the mounting groove extends to the peripheral side surface of the crushing box and penetrates through the bottom surface of the crushing box; a screw rod is rotationally arranged on the inner top surface of the mounting groove; the peripheral side surface of the screw rod is rotatably provided with a test assembly; the test assembly is positioned above the crushing box; a linkage assembly is arranged at the bottom end of the lead screw. A crushing assembly is arranged on the inner bottom face of the crushing box. And the crushing assembly is connected with the linkage assembly. According to the utility model, the screw rod is arranged to drive the test assembly to move and carry out pressure test on the cement test block, and meanwhile, the screw rod drives the linkage assembly to work and further drives the crushing assembly to crush small fragments into powder in the crushing box, so that the small fragments after the test can be treated after the pressure test is carried out on the cement test block.

This utility model discloses a foldable temporary sewage filter fence, which includes a fixed base plate, two fixed vertical plates fixed on the fixed base plate, and a fixed horizontal axis fixed between the two fixed vertical plates. A first water-blocking frame is rotatably fitted on the fixed horizontal axis. A mounting groove is opened on one side of the first water-blocking frame. A second water-blocking frame is rotatably connected to the top of the first water-blocking frame via a connecting hinge. A sliding ring seat and a return spring are movably fitted on the fixed horizontal axis. The sliding ring seat can rotate around the fixed horizontal axis. The sliding ring seat and the return spring are accommodated in the mounting groove. An operating handle is fixedly connected to the sliding ring seat. The two ends of the return spring abut against the side wall of the mounting groove and one side of the sliding ring seat, respectively. At least one positioning rod is fixedly provided on the sliding ring seat. The positioning rod is away from the return spring, extends and passes through the first water-blocking frame, and can selectively insert into the fixed vertical plate corresponding to its position. This utility model can achieve convenient two-section folding.

The utility model provides a portable plastic inflator, which relates to the technical field of inflation tools and comprises an inflator body, the inflator body comprises a high-pressure pack, a cylinder and a piston, the piston is slidably connected with the cylinder, a mounting plate is mounted at the top end of the piston, a pair of mounting seats I is mounted on two sides of the mounting plate, and the mounting seats I are mounted on the high-pressure pack. A handle is movably installed between each pair of first installation bases, a pair of second installation bases is installed on the two sides of the bottom end of the inflator body, and a foot plate is movably installed between each pair of second installation bases. The handle and the foot plate are folded, so that the handle and the foot plate are prevented from occupying a large space, people can conveniently carry the device, and the practicability is improved.

This application provides a video recommendation method, apparatus, device, and storage medium, relating to the field of communication technology. The method includes: upon receiving a video acquisition request, acquiring a candidate video list; acquiring the interaction probability between the user and each candidate video in the candidate video list, the interaction probability being determined based on the user's reconstructed embedding vector and the candidate video's reconstructed embedding vector; the user's reconstructed embedding vector being determined based on the user's embedding vector, the user's feature vector, and a pre-trained vector reconstruction model; the candidate video's reconstructed embedding vector being determined based on the candidate video's embedding vector, the candidate video's feature vector, and the vector reconstruction model; simulating the input of sample data during cold start when training the vector reconstruction model; and determining the target video to recommend to the user from the candidate video list based on the interaction probability between the user and each candidate video in the candidate video list. This method can accurately recommend videos to users during cold start, improving the video recommendation effect during cold start.

The performance of the large-granularity FTL table storage device is optimized based on cache management, and after a first storage command indicating write operation is received, whether a logic address indicated by the first storage command hits a previous storage command or not is detected; when the logic address indicated by the first storage command hits the second storage command, updating the second storage command based on the first storage command, and updating the cache unit index of the corresponding entry in the cache management unit based on the cache unit index of the first storage command, each entry of the cache management unit records a logic address of the storage command and a cache unit index of a cache unit used for storing data to be written of the storage command in an associated manner; and when the logical address indicated by the first storage command does not hit the previous storage command, adding an entry to the cache management unit, and recording the logical address of the first storage command and the cache unit index in an associated manner. According to the invention, the amount of data written into the NVM chip can be reduced, and the performance of the storage device is improved.