Title:
1つおよび複数の正弦波の変調技法および復調技法を使用した同軸ケーブル通信のシステムおよび装置
Document Type and Number:
Japanese Patent JP2008510325
Kind Code:
A
Abstract:
A method for generating a substantially sinusoidal waveform containing encoded digital data having one of a first value and a second value at selected phase angles thetan comprises generating the waveform having an amplitude Y defined by a first function at phase angles lying outside of regions having a range Deltatheta beginning at each phase angle thetan, said first function being Y=sin theta; generating the waveform having an amplitude Y defined by the first function at phase angles lying inside the regions having a range of Deltatheta beginning at each phase angle thetan where data of the first value is to be encoded; and generating the waveform having an amplitude Y defined by a second function at phase angles lying inside the regions having a range of Deltatheta associated with each phase angle thetan where data of the second value is to be encoded, the second function being different from Y=sin theta.
Inventors:
Forest Jay Brown
Ronald E. Kunzel
Charles Vi Pownal
David W Lower
Kenneth dalsandro
Ronald E. Kunzel
Charles Vi Pownal
David W Lower
Kenneth dalsandro
Application Number:
JP2007508506A
Publication Date:
April 03, 2008
Filing Date:
April 13, 2005
Export Citation:
Assignee:
Data Flow Technologies, Inc.
International Classes:
H04L27/00; H04B3/00; H04L27/24; H04L27/26
Domestic Patent References:
| JPH10145438A | 1998-05-29 | |||
| JPH02207639A | 1990-08-17 | |||
| JP2000286903A | 2000-10-13 |
Foreign References:
| US3121215A | 1964-02-11 | |||
| US6621426B1 | 2003-09-16 |
Attorney, Agent or Firm:
Masatake Shiga
Takashi Watanabe
Yasuhiko Murayama
Shinya Mitsuhiro
Takashi Watanabe
Yasuhiko Murayama
Shinya Mitsuhiro