Hangzhou Hikvision Digital Technology Co., Ltd.

Hangzhou Hikvision System Technology Co., Ltd.

Shengna Lin

Qiang Yu

Wanfeng Shi

Guizhu Xiao

Liangjin Hu

Jingcheng Zhu

A data extraction method and apparatus including: obtaining a data extraction instruction sent by a client, wherein the data extraction instruction is an instruction issued by a target checker logging in to the client, and the data extraction instruction carries a target user identifier of the target checker; obtaining extraction authority information for the target user identifier according to a preset correspondence and the target user identifier as target extraction authority information, wherein the preset correspondence comprises: a plurality of correspondences between user identifiers and extraction authority information, and the extraction authority information is information for representing an authority of a corresponding checker to extract vehicle passing data; extracting, from to-be-checked vehicle passing data, first to-be-checked vehicle passing data that matches the target extraction authority information; and sending the first to-be-checked data to the client. With the embodiments of the present application, the number of manual operations of the checker is reduced in extracting vehicle passing data, thereby further reducing the number of manual operations in data checking, and improving data checking efficiency.

Data extraction method and apparatus

The present application provides a multimedia data transmission method and device, wherein the method comprises: a first transmission device located in a first network obtaining a multimedia file descriptor and a multimedia file to be transmitted which have a correspondence, wherein the multimedia file descriptor and the multimedia file are stored in different memories; the first transmission device encoding content of the multimedia file descriptor and content of the multimedia file into a multimedia transmission file in a first format according to a predetermined rule; the first transmission device sending the multimedia transmission file to a second transmission located in a second network. With the present application, the problem that multimedia data cannot be transmitted synchronously during ferrying in related arts is solved and the security and confidentiality of multimedia data transmission is ensured while the multimedia data is transmitted synchronously.

Multimedia data transmission method and device

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Hangzhou, China

Shengna Lin