Patent ID: 7779442
Filing Date: 2010-08-17
Classification: H04N

Abstract:
1. An information transmitting apparatus for transmitting information through a first transmission path, comprising: receiving means for receiving a broadcasting signal from a second transmission path; demodulation means for demodulating the signal received by the receiving means; modulation means for modulating the signal demodulated by the demodulation means, wherein when the second transmission path includes services of a plurality of satellites belonging to different networks, the demodulated signal from the second transmission path includes network information of the different networks, including an actual network information table and an other network information table, extraction means for extracting the actual network information table and the other network information table from the demodulated signal, and storing the extracted information in a FIFO memory, wherein the network information table for the actual network and the other network are stored in an alternating manner in the FIFO memory, wherein the network information table indicates the physical information of its network in the second transmission path and is distinguished by a unique table ID, wherein the network information table is segmented into a plurality of sections with a same format, each section having a second indicator and a last section indicator; wherein the modulation means further includes a network information replacement means for replacing network information extracted by the extraction means with network information for the first transmission path, wherein the network information replacement means comprises: wherein the network information table for the first transmission path includes a first delivery system descriptor and network information table for the second transmission path includes a second delivery descriptor, wherein the first delivery system descriptor length and second delivery system descriptor length are in accordance with a transport stream descriptor length; wherein the network information table for the actual network and other network for the first transmission path are alternately stored in the first memory section and the second memory section; wherein as network information table for actual network and other network from the FIFO memory of the extraction means is transmitted to the network information replacement means, the switching circuit selectively replaces the network information of actual network and other network of the second transmission path by alternately outputting the corresponding actual and other network information of the first transmission path stored in the first memory section and the second memory section; wherein service identifiers of network information that are not retransmitted are deleted and placeholder data that has the same length of the deleted service identifiers is added, the placeholder data being determined according to a specification of the information transmission apparatus, and wherein a plurality of service list descriptors are appended to a transport stream identifier in accordance with the length of a said transport stream descriptor for identifying previous transmission.