6 results about "Message encoding" patented technology

This invention discloses a generative acoustic scene underwater covert communication method based on message latent variable injection, comprising: acquiring a message to be sent and acoustic scene condition information of a target local sea area; inputting the message to be sent into a trained message encoding module for encoding processing to obtain message latent variables; injecting the message latent variables into a trained condition generation module so that the condition generation module generates an acoustic scene underwater acoustic payload waveform carrying the message to be sent under the constraints of the acoustic scene condition information; processing the acoustic scene underwater acoustic payload waveform to obtain a covert communication frame suitable for transmission, and transmitting the covert communication frame; thereby, by simultaneously realizing acoustic scene camouflage and message carrying during the generation of the acoustic scene underwater acoustic signal, underwater covert communication that balances the acoustic scene adaptability of the target local sea area, the low distinguishability of the generated signal, and the reliability of legitimate reception recovery after underwater acoustic propagation is achieved.

The inventive concept relate to a technology, which recognizes widely deformable markers with high accuracy in an end-to-end manner of message encoding and decoding, and which generates and recognizes deformable fiducial markers based on artificial intelligence, and includes generating, by a marker generator, a unique marker pattern as a fiducial marker in an input binary message, rendering, by an imaging simulator, an image by generating a training dataset of a realistic scene image with the generated fiducial marker, and training a marker detector with the rendered image.

This invention discloses a message encoding method to improve frame loss during OTA upgrades. The method sets a single-frame write message for an OTA upgrade to include a first message group, a second message group, and a third message group. Each of these groups consists of two bits. The first message group contains two bits of write data. The second message group includes one bit of time synchronization data and one bit of first restoration data. The third message group includes one bit of checksum data and one bit of second restoration data. The time synchronization data is sequentially and cyclically set within a certain range as the single-frame write messages are sent frame by frame. The checksum data is calculated using a set checksum algorithm. The first and second restoration data are the corresponding numbers of different functions in a preset restoration function library. The first and second restoration data of the current frame write message are obtained based on the write data of the current frame, the write data of the next frame write message, and the function library.

A method for encoding / decoding a message with One Time Pad (OTP) process, includes receiving a message to be encoded and an ordered dataset. A PRNG is parameterized with an initial seed that is used in a harvesting operation, which selects data from the dataset to create a current entropy plane of the selected data. In an encoding operation a portion of the received message is selected. The current entropy plane is scanned and data from which data is selected. The location of the selected data from the entropy plane is determined and marked as used and then assembled in an encoded message. This operation is repeated until no unmarked data is present in the current entropy plane. A new entropy plane is generated, and the scanning operation repeated until all portions of the received message have been processed. The process is reversed for a decoding operation.

The application discloses a UDS diagnosis protocol analysis and execution method and system, electronic equipment and a storage medium, and relates to the field of vehicle diagnosis. The method comprises the following steps: a UDS service abstraction step, a UDS service message encoding and decoding step, a data block abstraction step, a data block serialization and analysis step, a result determination step, an execution control step, an interface configuration step, a solidification and storage step, and a loading and reuse step. Through the above scheme, a user can obtain a list of options such as a report, and can understand the required diagnosis option service content, thereby greatly reducing the use threshold of the diagnosis service, and greatly facilitating the use of UDS service participants in the whole life cycle of vehicle research, production and maintenance. Only by operating the friendly interface of the upper computer software, the meaning of the option content of all messages can be understood.

The application discloses a kind of based on Beidou GSMC's SSR short message encoding and decoding method and device, it is related to satellite navigation and communication technical field.Aiming at the high-precision positioning demand of no ground station scene, the application has broken through to build "cloud-end" collaborative architecture: service end gathers multi-source SSR correction number through Internet, realizes data volume compression more than 90% by original SSR-OSR conversion algorithm in combination with newly proposed encoding scheme;User end generates sketchy position by pseudorange single point positioning, and sends to service end by Beidou GSMC short message to issue decimeter level precision OSR correction number.User end fuses GNSS observation value, broadcast ephemeris and OSR correction number, realizes real-time precise point positioning without ground station, and dynamic positioning precision reaches decimeter level.The application provides breakthrough high-precision positioning support for special scene such as ocean exploration, emergency rescue etc..