Title:
TRANSMISSION DEVICE AND RECEPTION DEVICE FOR FREQUENCY MULTIPLEX DATA TRANSMISSION
Document Type and Number:
Japanese Patent JP2001197028
Kind Code:
A
Abstract:
To provide a transmission device and a reception device for frequency multiplex data transmission which effectively transmit a large amount of digital data by broadcasting or communication by using a radio transmission channel such as a satellite and the ground or a wired transmission line such as cable television.
Original data are obtained by separating digital data and sending them out to a transmission line after frequency multiplexing by plural digital modulating means, and putting together pieces of digital data obtained by plural selective demodulating means.
Inventors:
NODA TSUTOMU
SHIROSUGI TAKATOSHI
MIZUKAMI HIROYUKI
YAMASHITA TOMOHITO
SHIROSUGI TAKATOSHI
MIZUKAMI HIROYUKI
YAMASHITA TOMOHITO
Application Number:
JP2000006256A
Publication Date:
July 19, 2001
Filing Date:
January 12, 2000
Export Citation:
Assignee:
HITACHI LTD
International Classes:
H04L27/34; H04H20/00; H04H20/33; H04J1/08; H04J3/00; H04J11/00; H04L7/00; H04L12/18; (IPC1-7): H04J1/08; H04H1/00; H04J3/00; H04J11/00; H04L7/00; H04L12/18; H04L27/34
Attorney, Agent or Firm:
Sakuta Yasuo