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Title:
DIGITAL BROADCASTING SYSTEM
Document Type and Number:
Japanese Patent JP2008072528
Kind Code:
A
Abstract:

To effectively utilize an unused channel obtained by optimizing transmission broadcasting waves to a plurality of broadcasting devices in a service area for constructing a broadcasting network by SFN (Single Frequency Network).

The broadcasting network of the SFN is constructed by a system (a) of broadcasting apparatuses 120-12N. In this case, when a system (b) with a frequency differing from that of the system (a) is assigned from the broadcasting apparatuses 120-12N for additional service, arbitrary content is sent by radio by using the system (b) in the broadcasting apparatuses 120-12N, thus achieving VOD-compatible additional service. In the VOD-compatible broadcasting apparatuses 120-12N, when there is the VOD request of content erased from storages 200-20N, content requested mutually including subscriber terminals 13, 14 is searched. When the content is detected, transfer to a broadcasting apparatus that requested a search is made, or broadcasting is performed from the broadcasting apparatus having the content directly.


Inventors:
MIHASHI TAKU
Application Number:
JP2006000250142
Publication Date:
March 27, 2008
Filing Date:
September 14, 2006
Export Citation:
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Assignee:
TOSHIBA CORP
International Classes:
H04H20/67; H04B7/15; H04H20/02; H04H20/06; H04H20/16; H04H20/24; H04H20/42; H04H20/69; H04H20/72; H04N7/173; H04N21/2225; H04N21/231; H04N21/235; H04N21/2385; H04H3/00; H04H1/00
Domestic Patent References:
JPH06181460A1994-06-28
JPH10174068A1998-06-26
JP2005102174A2005-04-14
JP2006314094A2006-11-16
JP2004158955A2004-06-03
JP2008536441A2008-09-04
JP2009510468A2009-03-12
JPH11317712A1999-11-16
JP2003110512A2003-04-11
JP2005130460A2005-05-19
JP2000068913A2000-03-03
Foreign References:
US5544198A1996-08-06
US5218717A1993-06-08
Attorney, Agent or Firm:
Takehiko Suzue
Satoshi Kono
Nakamura Makoto
Kurata Masatoshi
Ryuji Mine
Yoshihiro Fukuhara
Muramatsu Sadao
Ryo Hashimoto



 
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