WO2009063578A1 - Digital broadcast receiving device and digital broadcast receiving method - Google Patents

Digital broadcast receiving device and digital broadcast receiving method Download PDF

Info

Publication number
WO2009063578A1
WO2009063578A1 PCT/JP2008/001460 JP2008001460W WO2009063578A1 WO 2009063578 A1 WO2009063578 A1 WO 2009063578A1 JP 2008001460 W JP2008001460 W JP 2008001460W WO 2009063578 A1 WO2009063578 A1 WO 2009063578A1
Authority
WO
WIPO (PCT)
Prior art keywords
digital broadcast
unit
broadcast wave
broadcast receiving
channel
Prior art date
Application number
PCT/JP2008/001460
Other languages
French (fr)
Japanese (ja)
Inventor
Tetsuro Nakamura
Tatsuya Obata
Hiroyuki Nagahama
Original Assignee
Mitsubishi Electric Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corporation filed Critical Mitsubishi Electric Corporation
Priority to JP2009541018A priority Critical patent/JP4850290B2/en
Publication of WO2009063578A1 publication Critical patent/WO2009063578A1/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0002—Modulated-carrier systems analog front ends; means for connecting modulators, demodulators or transceivers to a transmission line
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
    • H04N21/4382—Demodulation or channel decoding, e.g. QPSK demodulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
    • H04N21/4383—Accessing a communication channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H04N21/44008—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving operations for analysing video streams, e.g. detecting features or characteristics in the video stream
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/50—Tuning indicators; Automatic tuning control

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Circuits Of Receivers In General (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

A digital broadcast receiving device comprises front ends each including a reception unit for receiving a digital broadcast wave, a channel selection unit for selecting a channel number of the digital broadcast wave received by the reception unit, and a temporary judgment unit for temporarily judging whether the digital broadcast wave exists in the selected channel number according to whether a specific signal can be obtained by demodulating a signal outputted from the channel selection unit, an extraction unit connected to one of the front ends for extracting specific information from the demodulated digital broadcast wave outputted from the connected front end, a storage unit for storing channel numbers in which the digital broadcast wave is temporarily judged to exist by the temporary judgment units of the front ends, and a control unit for instructing the channel selection unit of the front end connected to the extraction unit to select the channel number stored in the storage unit. While the specific information is extracted from the demodulated digital broadcast wave outputted from the front end connected to the extraction unit, the control unit instructs the channel selection unit of another front end to select the next channel number.
PCT/JP2008/001460 2007-11-13 2008-06-09 Digital broadcast receiving device and digital broadcast receiving method WO2009063578A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009541018A JP4850290B2 (en) 2007-11-13 2008-06-09 Digital broadcast receiving apparatus and digital broadcast receiving method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007294512 2007-11-13
JP2007-294512 2007-11-13

Publications (1)

Publication Number Publication Date
WO2009063578A1 true WO2009063578A1 (en) 2009-05-22

Family

ID=40638434

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/001460 WO2009063578A1 (en) 2007-11-13 2008-06-09 Digital broadcast receiving device and digital broadcast receiving method

Country Status (2)

Country Link
JP (1) JP4850290B2 (en)
WO (1) WO2009063578A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000013696A (en) * 1998-06-19 2000-01-14 Sony Corp Digital broadcasting receiver, its channel selecting method and data transmitting method
JP2003333441A (en) * 2002-05-13 2003-11-21 Kenwood Corp Broadcast receiver
JP2004289508A (en) * 2003-03-24 2004-10-14 Toshiba Corp Electronic apparatus and acquiring method
JP2005303526A (en) * 2004-04-08 2005-10-27 Sharp Corp Broadcast receiver

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004363806A (en) * 2003-06-03 2004-12-24 Toshiba Corp Device and method for receiving broadcast

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000013696A (en) * 1998-06-19 2000-01-14 Sony Corp Digital broadcasting receiver, its channel selecting method and data transmitting method
JP2003333441A (en) * 2002-05-13 2003-11-21 Kenwood Corp Broadcast receiver
JP2004289508A (en) * 2003-03-24 2004-10-14 Toshiba Corp Electronic apparatus and acquiring method
JP2005303526A (en) * 2004-04-08 2005-10-27 Sharp Corp Broadcast receiver

Also Published As

Publication number Publication date
JPWO2009063578A1 (en) 2011-03-31
JP4850290B2 (en) 2012-01-11

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