Title:
DIGITAL BROADCAST RECEIVING SYSTEM
Document Type and Number:
Japanese Patent JP3657525
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a digital broadcast receiving system capable of minimizing a decrease in an error correction capability of a data decoding part even when weighting information such as power information varies due to the influence of a multipath, etc., with respect to received data.
SOLUTION: A digital modulator 1A reproduces the power information based on amplitude comparison results obtained from a pilot signal amplitude comparator circuit 7 by using a nonlinear conversion table 20 for power information generation. The nonlinear conversion table 20 for power information generation in which the power information is nonlinearly correlated with the amplitude comparison results has a nonlinear characteristic which is deflected so that the power information correlated with the amplitude comparison results can be almost '0' in a section between the position where the amplitude comparison results is '0' and a prescribed value in particular.
Inventors:
Koichiro Nishiyama
Eiji Arita
Eiji Arita
Application Number:
JP2001103149A
Publication Date:
June 08, 2005
Filing Date:
April 02, 2001
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
H04N5/455; H03M13/41; H04L27/22; H04L27/38; (IPC1-7): H04L27/38; H03M13/41; H04L27/22; H04N5/455
Domestic Patent References:
| JP2001044965A | ||||
| JP5315977A | ||||
| JP88989A | ||||
| JP88857A | ||||
| JP11196144A | ||||
| JP2001320382A |
Attorney, Agent or Firm:
Shigeaki Yoshida
Yoshitake Hidetoshi
Takahiro Arita
Yoshitake Hidetoshi
Takahiro Arita
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