BROADCASTING DATA CONVERTER

• US 20080209466A1
• Filed: 01/29/2008
• Published: 08/28/2008
• Est. Priority Date: 02/22/2007
• Status: Active Grant

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Tomobe, Osamu, Ishida, Takaharu, Sato, Yoshihito, Oda, Toshiyuki
• Granted Patent: US 7,984,465 B2
• Time in Patent Office: Days
• US Class Current: 725/33
• CPC Class Codes: H04H 20/103 Transmitter-side switching
• CPC Class Codes: H04H 20/59 for emergency or urgency
• CPC Class Codes: H04N 21/23424 involving splicing one content stream with another content stream, e.g. for inserting or substituting an advertisement
• CPC Class Codes: H04N 21/235 Processing of additional data, e.g. scrambling of additional data or processing content descriptors
• CPC Class Codes: H04N 21/242 Synchronization processes, e.g. processing of PCR [Program Clock References] arrangements for synchronising broadcast or distribution via plural systems in broadcast distribution systems H04H20/18
• CPC Class Codes: H04N 21/41407 embedded in a portable device, e.g. video client on a mobile phone, PDA, laptop constructional details of equipment or arrangements specially adapted for portable computer application G06F1/1626; arrangements specially adapted for mobile receivers in broadcast systems H04H20/57
• CPC Class Codes: H04N 21/435 Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
• CPC Class Codes: H04N 21/44016 involving splicing one content stream with another content stream, e.g. for substituting a video clip
• CPC Class Codes: H04N 21/64315 DVB-H
• CPC Class Codes: H04N 21/814 comprising emergency warnings arrangements specially adapted for emergency or urgency in broadcast systems H04H20/59; arrangements for providing alarms, notifications, alerts to substation in data switching networks H04L12/1895
• CPC Class Codes: H04N 21/8146 involving graphical data, e.g. 3D object, 2D graphics

Abstract

A relay station comprises an emergency information detection unit for detecting an emergency information broadcasting flag in the digital broadcasting TMCC signal transmitted from the center station; a replacement data creation unit for issuing an instruction for creating replacement contents and replacing the data when emergency information is multiplexed in the TS; and a time synchronization unit for executing time synchronization between the TS created by the data replacement and the TS before the data replacement. On a receiving terminal, the replaced data broadcasting contents can be received while prefectural broadcasting video and audio contents are continuously received.

Claims

1. A broadcasting data converter for replacing specific data in a first transport stream with a second transport stream, comprising:

a transport stream receiving unit for receiving the first transport stream,

a replacement data creation unit for creating the second transport stream,

a transport stream transmission unit for outputting a replaced transport stream,

an emergency information detection means for detecting emergency warning activation flag information in the TMCC signal of the ISDB-T system multiplexed with the first transport stream received by the transport stream receiving unit,

a replacement data creation instruction unit for instructing the replacement data creation unit to create replacement data according to the detection results of the emergency information detection unit, and

a data replacement unit for replacing a part of the first transport stream with the second transport stream data created by the replacement data creation unit according to the detection results of the emergency information detection unit.

2. The broadcasting data converter according to claim 1,

wherein replacement target data to be replaced is data broadcasting information in the first transport stream and PSI/SI information prescribed by the ARIB standard TR-B14.

3. The broadcasting data converter according to claim 1,

wherein PSI/SI information of the replaced first transport stream has a sub code of area information of the second transport stream.

4. The broadcasting data converter according to claim 1, further comprising a time synchronization unit for correcting the PCR value in the transport stream before and after the data replacement when specific data in the first transport stream is replaced with data in the second transport stream.