Beijing Baidu Netcom Science and Technology Co., Ltd.

Beijing Baidu Netcom Science Technology Co., Ltd

Baidu USA LLC

Baidu.com Times Technology (beijing) Co. Ltd.

Jingchao Feng

Liming Xia

Zhuo Chen

Quan Wang

Ning Qu

Haifeng Wang

Wei He

Yu Ma

Kaiwen Feng

James P Peng

Yibing Liang

Chengliang Deng

Weide Zhang

Qingrui Sun

Pengjie Zheng

Tianxiang Cui

Kai Yang

Haitao Liu

Zhou Chen

Jiaxin Sun

Ming Qu

Yanting Chen

Xiaochuan Du

Mingsong Wang

Rongjing Shang

An image processing method in remote control, a device, an apparatus and a program product are provided and related to the field of automatic driving technologies. The specific implementation solution includes receiving image information sent by a vehicle, wherein the image information includes multiple-channel image data collected by the vehicle; performing a stitching process on the multiple-channel image data, to obtain a stitched image; sending the stitched image to a remote cockpit apparatus for controlling the vehicle.

Image processing method in remote control, device, apparatus and program product

A method for remote control of an autonomous driving vehicle (ADV) includes: sending an assistance request to a cloud server in response to detecting that a current road section in front of the ADV is unable to be passed; obtaining a reference detour route returned from the cloud server; generating control instructions based on the reference detour route and a current driving environment of the ADV; and controlling the ADV based on the control instructions.

Method for remote control of autonomous driving vehicle, autonomous driving vehicle and cloud device

The present disclosure provides a method and apparatus of determining a guide path, and a method and apparatus of controlling driving of a vehicle. The method of determining the guide path may be performed by a monitoring platform and includes: displaying a map for a predetermined range of a vehicle in response to receiving a guide request transmitted by the vehicle, wherein the map includes a plurality of first track points for the vehicle; changing a position of at least one of the plurality of first track points in the map in response to a target operation on the at least one first track point, so as to obtain a plurality of second track points; determining the guide path for the vehicle according to the plurality of second track points; and transmitting path information indicative of the guide path to the vehicle.

Method and apparatus of determining guide path, method and apparatus of controlling driving of vehicle, and electronic device

A first request is received from a first processing node to produce data blocks of a first data stream representing a first communication topic. The first processing node is one of the processing nodes handling a specific function. Each of the processing nodes is executed within a specific node container having a specific operating environment. A global memory segment is allocated from a global memory to store the data blocks of the first data stream. A first local memory segment is mapped to the global memory segment. The first local memory segment is allocated from a first local memory of a first node container containing the first processing node. The first processing node directly accesses the data blocks of the first data stream stored in the global memory segment by accessing the mapped first local memory segment within the first node container.

Efficient communications amongst computing nodes for operating autonomous vehicles

The present application discloses a data storage method and apparatus. A specific implementation of the method includes: acquiring to-be-serialized data and a description file related to the to-be-serialized data, wherein the to-be-serialized data includes a data name and a data value, and the description file includes a file identifier and at least one data element, the data element includes at least one data item, and the data item includes a data item name and a data type; allocating a memory space to the data item according to the data type; finding, according to a preset matching relationship between the to-be-serialized data and the data item, a data item matched with the to-be-serialized data; and storing the data value into the memory space of the found data item as a data item value of the found data item. This implementation improves the data storage efficiency.

Data storage method and apparatus

The present application discloses a method and an apparatus for transmitting a message. The method of an embodiment comprises: dividing a shared memory area allocated by an operating system into a plurality of memory blocks for storing messages having different priorities; dividing each memory block in the plurality of memory blocks into at least one memory unit having a successive serial number; determining, from the plurality of memory blocks according to a priority of a to-be-transmitted message, a target memory block for storing the to-be-transmitted message; and writing the to-be-transmitted message into a memory unit of the target memory block. This embodiment implements message transmission based on priorities of the messages, and improves the control security of an intelligent control system.

Method and apparatus for transmitting a message

The present application discloses a method and device for establishing communication connection. An embodiment of the method includes: selecting a predetermined number of servers from a server cluster to form a backup server cluster, the server cluster including at least one server adapted to implement a given service; obtaining communication information of each backup server in the backup server cluster, and selecting a backup server from the backup server cluster as a master server based on the communication information of the backup server; and sending the communication information of the master server to controlled equipment controlled by the server cluster to establish communication connection between the master server and the controlled equipment. The embodiment solves a problem of reliability raised when main server abnormally quits or restarts during the operation of a system.

Method and device for establishing communication connection

The present application discloses a method and apparatus for switching between servers in a server cluster. The server cluster includes at least one server for implementing a given service. A specific implementation of the method includes: detecting a number of servers in a standby state in the server cluster; starting at least one server in the server cluster so that the number of servers in the standby state reaches a predetermined number, in response to detecting the number of servers in the standby state being less than the predetermined number; monitoring a master server for providing a service in the server cluster; and selecting a server from the servers in the standby state as a master server to continue to provide the service, in response to detecting the master server being abnormal. This implementation solves the data loss problem caused by an abnormal termination or restart of the master server.

Method and apparatus for switching between servers in server cluster

A method and a system for transmitting data are disclosed. A method embodiment comprises: acquiring a most recent shared memory block index of a shared memory segment by a data receiver, the shared memory segment being used by a data transmitter and the data receiver to transmit data; deciding whether the most recent shared memory block index is consistent with a shared memory block index corresponding to data recently read by the data receiver; and determining, according to the decision, whether to read the data in the shared memory block corresponding to the most recent shared memory block index, where the determining includes reading the data in the shared memory block corresponding to the most recent shared memory block index when the decision indicates that the most recent shared memory block index is inconsistent with the shared memory block index corresponding to the data recently read by the data receiver.

Data transmission method and system for transmitting data between processes using shared memory block indexes

A first request is received from a first processing node to produce data blocks of a first data stream representing a first communication topic. The first processing node is one of the processing nodes handling a specific function of operating an autonomous vehicle. Each of the processing nodes is executed within a specific node container having a specific operating environment. A global memory segment is allocated from a global memory to store the data blocks of the first data stream. A first local memory segment is mapped to the global memory segment. The first local memory segment is allocated from a first local memory of a first node container containing the first processing node. The first processing node directly accesses the data blocks of the first data stream stored in the global memory segment by accessing the mapped first local memory segment within the first node container.

The present disclosure provides an information transmitting method and apparatus for use in a robot operating system. A specific implementation mode of the method comprises: acquiring to-be-transmitted information; determining a network relationship between a current node and an information receiving node receiving the to-be-transmitted information, the network relationship comprising a remote relationship and a local relationship; determining a transmission approach of the to-be-transmitted information according to a message transmission parameter, a configuration parameter and the network relationship; transmitting the to-be-transmitted information in the transmission approach. The implementation mode improves the information transmission efficiency of the robot operating system.

Information transmitting method and apparatus in robot operating system

The present application discloses a data transmission method and system. A specific embodiment of the method includes: receiving a data transmission-instruction by a data sender, wherein the data transmission-instruction includes a thematic name indicative of a type of to-be-transmitted data required by a data receiver; creating a shared memory segment corresponding to the thematic name. It makes possible for the data sender and the data receiver to run in a separate memory space. When data is needed to be transmitted, a corresponding shared memory segment may be created for data transmission in accordance with any transmitting requirement, and the shared memory segment may be released when the transmission is done or appears abnormal. On one hand, it reduces the redundant operations of the data transmission system during data transmission, and improves the data transmission performance; on the other hand, the data transmitting procedure between the data sender and the data receiver, and other operations executed by the data sender or the data receiver are independent of each other, which improves the stability of the data transmission system.

Data transmission method and system

The present application discloses a method and an apparatus for transmitting information. A specific implementation of the method includes: sending first information to be transmitted to a shared memory; traversing memory groups in the shared memory, and acquiring a first memory unit suitable for the amount of the first information, each of the memory groups including at least one memory unit, each of memory units in the memory group having an identical size, and the memory units in different memory groups having different sizes; and storing the first information into the acquired first memory unit, so that the first information is read from the first memory unit by a receiving node. Through this implementation, the first information that needs to be transmitted is stored into the memory unit suitable for the amount of the first information, thereby saving memory resources.

Method and apparatus for transmitting information

This disclosure discloses a method and apparatus for transmitting data in a robot operating system. The robot operating system includes a transmitting node, a receiving node, and a shared memory as a transmission medium between the transmitting and receiving nodes. The method in a particular embodiment includes: traversing, by the transmitting node, a sequence of data templates stored in advance in the shared memory, and determining whether the respective data templates in the sequence of data templates are currently being written into or read from; identifying a data template in the sequence of data templates currently being neither written into nor read from as a target data template, and obtaining information of the target data template; and writing data into the target data template according to the information of the target data template. This embodiment can improve the performance of transmitting the data while occupying less memory resources.

Method and apparatus for transmitting data in a robot operating system

Disclosed in the present application are a method and device for managing a shared memory in a robot operating system. A detailed embodiment of the method comprises: acquiring a shared memory registering service request transmitted from a message receiving node, the shared memory registering service request comprising a topic name and a size of a required memory segment; requesting a memory segment in a shared memory area based on the size of the required memory segment, associating the topic name with the requested memory segment, and saving the topic name in a configuration file; dividing the requested memory segment into a plurality of memory blocks based on a size of a message transmitted from a message transmitting node; and deallocating the requested memory segment where any one of following conditions is satisfied: the topic name in a main node is inconsistent with that in the configuration file, the message transmitting node and message receiving node stop working, and the message receiving node stops subscribing to a topic corresponding to the topic name. By means of the embodiment, the shared memory of the robot operating system is allocated and managed more reasonably and flexibly.

Growing community of inventors

Beijing, China

Jingchao Feng