| 摘要 |
A signal processing apparatus and a signal processing method are disclosed, both designed to convert a first digital broadcast having a prescribed transmission frequency on a first network to a second digital broadcast signal having a prescribed frequency on a second network, and to enable changes made in the first network to automatically apply to the second network.
The signal processing apparatus comprises a table-detecting means for detecting a network information table, which is physical information about a transmission path, from the digital broadcast data demodulated by a demodulating means, an analyzing means for analyzing information about the first network, on the basis of the network information table detected by the table-detecting means, a comparing means for comparing the information about the first network analyzed by the analyzing means, with the previous information about the first network, a table-changing means for changing the network information table of the first network to one that complies with the second network, on the basis of the information about the first network resulting from the comparison, a table-replacing means for replacing the network information table supplied from the demodulating means, with the network information table supplied from the table-changing means, a modulating means for modulating the digital broadcast data whose network information table has been replaced by the table-replacing means, thereby to generate a second digital broadcast signal. |
