Zhejiang Bangsun Technology Co., Ltd.

Hangzhou Silan Microelectronics Co., Ltd.

Cainiao Smart Logistics Holding Limited

Yang Gao

Wei Chen

Tao Huang

Xinyu Wang

Lu Jin

Ping Lu

Xingen Wang

Yong Wang

Dong Wang

Shaohua Zhang

Jianxing Wu

Feng Yao

Anzhai Peng

Hua Zhan

Xianming Tang

Xianwei Yan

Haifeng Lin

Shaohua Chen

Provided is an aggregation index structure and an aggregation index method for improving aggregation query efficiency. The aggregation index partitions streaming data through two dimensions of grouping and slicing, and then aggregates the partitioned data. The structure includes index metadata, a sliced data list and a detailed data store; the aggregation index method includes three parts: aggregation index definition, aggregation index creation and aggregation index query. The aggregation index structure and method provided by the present disclosure can greatly improve the efficiency of aggregation query, support the ad hoc aggregation query of PB-level data, complete the aggregation query of a large amount of data in seconds, support the insertion of new data at any time, and return the query results in minutes or even seconds latency in the event of changes of the query range conditions.

Structure and method of aggregation index for improving aggregation query efficiency

Provided is a method for reverse real-time matching based on event-driven graph patterns. The method includes definition of a graph pattern, establishment of reverse matching architecture and a reverse matching method; and the graph pattern is used for describing a spatial connection relationship among vertices and edges in a graph in a reverse order and attribute constraints thereof, and includes a linked list of matching steps and matching contexts. Reverse real-time matching of the graph pattern is realized according to the reverse matching architecture, and the problem of event-driven subgraph matching in a real-time scene is solved.

Method for reverse real-time matching based on event-driven graph patterns

A control channel allocation method for a flying device comprises: allocating a task to a flying device, wherein the task comprises flight information for the flying device; determining a flight time of the flying device flying from a departure station to an arrival station according to the flight information; searching for one or more control channels at the departure station and the arrival station that are idle during the flight time based on one or more control channel occupation tables as one or more target control channels, wherein the one or more control channel occupation tables store idle states of a plurality of control channels at the departure station and the arrival station during a plurality of periods of time; and allocating the one or more target control channels for controlling the flying device to fly from the departure station to the arrival station.

Control channel allocation method, take-off method and remote control method for flight apparatus

The present invention provides a switching power supply and a controller thereof, wherein the controller comprises: a switching power supply control device having a power supply terminal and detecting a voltage at the power supply terminal; a composite device integrating therein a power transistor and a depletion transistor, wherein the power transistor has a gate coupled to a first input, a source coupled to a first output, and a drain coupled to an input signal terminal; the depletion transistor has a gate coupled to a second input, a source coupled to a second output, and a drain coupled to the input signal terminal; the first input, the second input and the second output are coupled to the switching power supply control device, the first input receives a driving signal generated by the switching power supply control device, and the input signal terminal receives an input signal of the switching power supply. The power transistor and the depletion transistor in the composite device may be integrated within the same composite device. The present invention can shorten the startup time of the switching power supply, effectively reduce the standby power consumption, and also reduce the cost.

Switching power supply and the controller thereof

Growing community of inventors

Hangzhou, China

Yang Gao