Patent ID: 8446854
Filing Date: 2013-05-21
Classification: H04L,H04N

Abstract:
1. A signal processing apparatus comprising: first detection means for detecting a first preamble signal from a multiplexed signal composed of a plurality of signals comprised of a number of signal types and each signal holding said first preamble signal and each signal type having a different structure; second detection means configured such that if information which is included in said first preamble signal detected by said first detection means and which identifies each of said plurality of signals indicates a first signal, then said second detection means detects a second preamble signal following said first preamble signal; duration detection means for detecting a duration of a second signal in said multiplexed signal based on information included in said second preamble signal detected by said second detection means; duration information output means for outputting information about the second signal duration detected by said duration detection means, to another signal processing apparatus configured to demodulate one of said first and said second signals in said multiplexed signal; and demodulation means for demodulating the other of said first and said second signals in said multiplexed signal based on the information included in said first preamble signal, on the information included in said second preamble signal, and on the information about said second signal duration detected by said duration detection means.