15 results about "Random access" patented technology

The invention discloses a random access response determining method, a device and a system, which are used for enabling user terminals to effectively recognize the format of random access response, improving the compatibility of user terminals in different versions, enabling the user terminals in different versions to accurately analyze and acquire the own RAR (Random Access Response) and improving the random access success rate. The method comprises the following steps: the user terminals determine the types of RARs corresponding to marks carried in a data packet transmission unit MAC PDU message header of a received media access control layer according to the corresponding relation between the preset marks and the RAR types, determine the resolution manner corresponding to the RARs according to the corresponding relation between the preset RAR types and the resolution manner and achieves resolution.

Low power magnetoresistive random access memory elements and methods for fabricating the same are provided. In one embodiment, a magnetoresistive random access device has an array of memory elements. Each element comprises a fixed magnetic portion, a tunnel barrier portion, and a free SAF structure. The array has a finite magnetic field programming window Hwin represented by the equation H_win≈(Hsat−Nσ_sat)−(Hsw+Nσ_sw), where Hsw is a mean switching field for the array, Hsat is a mean saturation field for the array, and Hsw for each memory element is represented by the equation H_SW≅√{square root over (H_kH_SAT)}, where H_k represents a total anisotropy and H_SAT represents an anti-ferromagnetic coupling saturation field for the free SAF structure of each memory element. N is an integer greater than or equal to 1. H_k, H_SAT, and N for each memory element are selected such that the array requires current to operate that is below a predetermined current value.

A method and system for fast channel change (FCC) between multicast digital video feeds wherein each digital video feed is converted to a set of slotted multicasts, each having the same content but delayed in time relative to each other, metadata associated with the digital video feed and the slotted multicasts is published using an on-the-wire format to downstream client devices (e.g. set-top boxes), when a user selects the digital video feed (i.e. a new channel) the client device uses the metadata to select a slotted multicast that minimizes the total time to reach the next random access point (RAP) while allowing a maximum leave-join delay. Both a FCC server that generates the slotted multicasts and a FCC middleware on the client devices are connected to a common time reference, and the method and system provide for adjusting to clock drift on the FCC server relative to the common time reference.

Persistent Memory, byte-addressable non-volatile memory technologies, offer performance advantages and access similar to Dynamic Random Access Memory while having the persistence of disk. Hardware Transactional Memory support, originally designed for DRAM concurrency control, can corrupt persistent memory transactions due to cache evictions before system failure. Unifying storage and memory on the main-memory bus and accessed directly while using HTM for concurrency control has previously required the additional burden of changes to processors to prevent possible data corruption.

The present invention provides a solution for the durability of transactions to persistent memory while using HTM as a concurrency control mechanism, without any changes to processors or cache-coherency mechanisms. The invention includes a software only method and system that provides durability and ordering of HTM transactions to persistent memory. The invention also discloses a back-end memory controller that supports HTM transactions for durability to persistent memory without up-front processor changes.

A moving picture recording device includes a random-access, computer-readable and writable storage medium to provide non-linear access to recorded clips. The device provides digital capture of both video and audio information. Multiple data paths are provided to allow recording to and playback from the storage medium. Lists are maintained to manage recorded clips and edited events. An outtake list of deleted clips is also maintained. An event list includes a list of video events including clips from the storage medium as well as other video sources including a camera or external video. With switching circuitry, recorded clips can be viewed during editing while live images are output to a program output. An editing interface includes dedicated keys for performing standard recording functions as well as a display with associated input keys having adaptive functions. The textual display indicates the function currently associated with the input key. This display provides a simple interface for editing video without a mouse or other external input device or complex graphical user interface. The interface also may allow a user to input a value, stored as an attribute of a clip, that represents the merit of the clip. These attributes may be used to rank and/or select clips.

The embodiment of the invention discloses a video encoding method, a video decoding method and related devices. The method comprises the following steps: selecting at least one inter-frame encoding frame in a plurality of inter-frame encoding frames of video data by an encoder to serve as a virtual random access frame, and separately setting corresponding sequential hierarchy numerical values for a plurality of intra-frame encoding frames and the inter-frame encoding frames in the plurality of inter-frame encoding frames of the video data, wherein the plurality of inter-frame encoding frames carrying the sequential hierarchy numerical values comprise virtual random access frames and ordinary frames; and sending the video data carrying the sequential hierarchy numerical values to a decoder, so that when the decoder detects a playing operation of a target ordinary frame in the video data, the decoder decodes the target ordinary frame according to the sequential hierarchy numerical value corresponding to the target ordinary frame and the sequential hierarchy numerical value corresponding to the virtual random access frame that is in front of the decoding sequence of the target ordinary frame and is closest to the target ordinary frame. By adoption of the method disclosed by the invention, the random access efficiency can be improved while the video encoding efficiency is improved.

The invention relates to an interactive controller comprising a central processing unit, a graphic processing unit, a video processing unit, a RAM (random access memory) controller, a non-easy-to-lose type storage controller, a video output module, a general I/O (input/output) interface, a network module and a video input module which are respectively connected with a module interconnection unit, the RAM controller is in RAM connection with a random access storage device, and a non-easy-to-lose type storage is connected with the non-easy-to-lose type storage controller; the video input module is used for video output interface of wired or wireless connection of operating terminals, and the video output module is used for video input interface of wired or wireless connection of display terminals and the operating terminals. Through the interactive controller, the operating terminals can access to a system in a wired or wireless manner, the existing intelligent terminals with computer functions can be adopted as the operating terminals, and users can demonstrate interactive operation in the whole area.

The invention discloses a sending method and device for scheduling requests, a storage medium and a terminal. The method includes obtaining the scheduling request configuration parameters of a logic channel or a logic channel set to which data belongs when the data triggers a scheduling request, the scheduling request configuration parameters being determined by a network in advance and corresponding to the logic channel or the logic channel set; and sending the scheduling request through a distributed PUCCH resource or random access based on the scheduling request configuration parameters andthe triggering time of the scheduling request. Through the technical schemes, the scheduling request can be flexibly sent through the distributed PUCCH resource or the random access, uplink resourcescan be efficiently used, and the access time delay of user equipment can be better reduced.

The invention discloses a resistive random access memory device and an operation method therefor. During a formation period, a preset bias current is provided for each resistive random access memory cell, so as to homogenize impedance values of all the resistive random access memory cells, thereby improving reliability of data access.

The invention provides an anti-large frequency offset solution method based on a 5G random access preamble long sequence, and the method employs the cyclic prefix of a random preamble to calculate and correct the decimal frequency offset, and solves the influence of a secondary peak generated by the decimal frequency offset on the detection performance of a preamble sequence. After fast Fourier transform, five paths of frequency domain data with different integer frequency offsets are constructed in a mode of extracting effective subcarrier frequency domain data from the subcarrier frequency domain data; then, matching is carried out by adopting different root sequences according to the characteristic of preamble cyclic shift, and the maximum value is judged through search window shift, so the processing time of sequence detection and the hardware resource consumption are reduced; and the influence of integer frequency offset on random access caused by inaccurate frequency offset calculation and application scenarios under the condition of low signal-to-noise ratio is solved by utilizing a five-path parallel matching scheme.

In the present disclosure, a transmitting device transmits a first message comprising i) a first random access preamble with a first random access preamble identifier (RAPID) and ii) a first uplink payload; receives a random access response (RAR) medium access control (MAC) protocol data unit (PDU) including i) a first field set to represent presence of one or more RAPIDs and ii) the one or more RAPIDs; determines whether both of the first RAP and the first payload is successfully transmitted, based on whether the one or more RAPIDs include the first RAPID; and monitors a second message related to the first message based on determining that both of the first RAP and the first payload is successfully transmitted.