Design of PSIP converter for data broadcasting service in the interoperable network of terrestrial and cable

In this paper, we propose a method for constructing a terrestrial/cable PSIP (program and system information protocol) converting system, a so-called PSIP converter, which converts terrestrial PSIP into cable PSIP for a data broadcasting service in the interoperable network of terrestrial and cable, and define an interface between the PSIP converter and the OOB SI generator by using PMCP messages compliant to ATSC T3/S1. The exiting PSIP converter just converts terrestrial PSIP into cable PSIP compliant to ATSC and OCAP standards and transmits by am MPEG-2 TS format. That is to say, it is not for digital data broadcasting but for digital broadcasting. In other words, the proposed PSIP converter is designed to convert and transmit PSIP, including DET information, which is necessary data event information for the data broadcasting service. In addition, the PSIP converter can support various types of PSIP information to the OOB SI generator by using PMCP messages defined by a hierarchical structure such as per each channel, audio/video event, data event and so on.