Patent ID: 6480551
Filing Date: 2002-11-12
Classification: G06F,H04B,H04H,H04N

Abstract:
A signal processing device for converting a first digital broadcast signal having a predetermined transmission frequency on a first network into a second digital broadcast signal having a predetermined transmission frequency on a second network comprising:demodulating means for demodulating a first digital modulated signal, based on said first digital broadcast signal, to obtain digital broadcast data; table-detecting means for detecting a table, including physical information relating to a transmission path, from said digital broadcast data obtained by said demodulating means; table-changing means for changing said table detected by said table-detecting means so that the table is applicable to said second network; table substitution means for substituting the table changed by said table-changing means for the table of said digital broadcast signal obtained by said demodulating means; modulating means for modulating said digital broadcast data and the substituted table to obtain a second digital modulated signal; and frequency-converting means for frequency-converting said second digital modulated signal to obtain a second digital broadcast signal.