CATV communication system for changing first proto

专利名称：CATV communication system for changing

first protocol syntax processor whichprocesses data of first format to secondprotocol syntax processor processes data ofsecond format

发明人：Reem Safadi申请号：US08/402027申请日：19950310公开号：US05892910A公开日：19990406

摘要：An adaptive protocol CATV communication system is embodied in adecentralized communication arrangement, wherein the communicating nodes arelocated at various points within the CATV system. Each communicating node has twoprotocol syntax processing components: 1) a protocol syntax processor (PSP) which is adownloadable software component that processes of incoming frames; and 2) anadaptive protocol processor which is a fixed software component that oversees thereplacement of an old PSP with a new PSP. A master node initiates the migration from anold PSP to a new PSP by sending the new PSP image frames to a slave node. After thenew PSP image is complete, the slave node enters a verification mode to test the newPSP. The master node sends special test frames to the slave node to verify theoperability of the new PSP by using the old PSP. The results of the verification areconveyed back to the master node to take the appropriate actions. The CATV systemremains fully operational for the duration of the PSP upgrade since the frequencies

allocated for video programming differ from the frequencies allocated for datatransmission.

申请人：GENERAL INSTRUMENT CORPORATION

代理机构：Volpe and Koenig, P

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