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发明公开
CN104540005A 一种节目特定信息PSI表获取方法、装置及系统 有权

一种节目特定信息PSI表获取方法、装置及系统
摘要：
本发明公开了一种节目特定信息PSI表获取方法、装置及系统，针对每一个端口输入的节目的传输流TS，FPGA在该TS中搜索节目特定信息PSI表的属性信息；将搜索到的PSI表的属性信息与预存的待搜索PSI表的属性信息进行匹配；如果匹配成功，将搜索到的PSI表的属性信息对应的当前PSI表的内容进行保存；向CPU发送中断请求，该中断请求提示CPU读取所述当前PSI表。采用本发明实施例提供的方案，相比现有技术，节省了CPU处理资源，提高了PSI表的获取效率。
摘要（英）：

The invention discloses a program specific information (PSI) table acquisition method, device and system. According to a transport stream (TS) of a program input to each port, an FPGA searches for attribute information of a PSI table in the TS; the found attribute information of the PSI table is matched with prestored attribute information of a PSI table to be searched; if matching succeeds, the content, corresponding to the found attribute information of the PSI table, of a current PSI table is saved; an interrupt request is sent to a CPU and indicates the CPU to read the current PSI table. By the adoption of the scheme, compared with the prior art, CPU processing resources are saved, and the acquisition efficiency of the PSI tables is improved.

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