KR20090091966A - 디지털 튜너의 채널 선국 장치 및 방법 - Google Patents
디지털 튜너의 채널 선국 장치 및 방법Info
- Publication number
- KR20090091966A KR20090091966A KR1020080017211A KR20080017211A KR20090091966A KR 20090091966 A KR20090091966 A KR 20090091966A KR 1020080017211 A KR1020080017211 A KR 1020080017211A KR 20080017211 A KR20080017211 A KR 20080017211A KR 20090091966 A KR20090091966 A KR 20090091966A
- Authority
- KR
- South Korea
- Prior art keywords
- error rate
- channel
- error
- channel frequency
- frequency
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
Classifications
-
- 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
- H04N5/52—Automatic gain control
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H40/00—Arrangements specially adapted for receiving broadcast information
- H04H40/18—Arrangements characterised by circuits or components specially adapted for receiving
-
- 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
- H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
- H04N21/44209—Monitoring of downstream path of the transmission network originating from a server, e.g. bandwidth variations of a wireless network
-
- 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
- H04N21/47—End-user applications
- H04N21/482—End-user interface for program selection
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Computer Networks & Wireless Communication (AREA)
- Human Computer Interaction (AREA)
- Databases & Information Systems (AREA)
- Circuits Of Receivers In General (AREA)
Abstract
Description
Claims (5)
- 고주파 방송신호를 중간주파수로 변환하는 엠오피엘엘 회로; 상기 엠오피엘엘 회로로부터 변환된 중간주파수를 복조하는 복조기; 상기 복조기에서 선국된 채널주파수중 방송신호 에러비율이 적정한 채널주파수를 저장하는 메모리; 및 상기 메모리에서 읽어드린 채널주파수에 대한 에러 관련 요소 설정값들의 에러비율을 최적화하여 상기 메모리에 저장하는 제어부를 포함하는 디지털 튜너의 채널 선국 장치.
- 제 1 항에 있어서,상기 에러관련 요소 설정값들은 자동이득제어 시간상수(AGC TIME CONSTANT), 자동이득제어 테이크 오버 포인트(AGC TOP), 차지펌프(CHARGE PUMP)인 것을 특징으로 하는 디지털 튜너의 채널 선국 장치.
- 채널 선국시, 방송신호 에러비율이 적정한 채널 주파수를 저장하는 제1단계;상기 저장된 채널 주파수의 에러 관련 요소 설정 값들의 에러비율을 최적화 하는 제2단계;상기 저장된 채널 주파수의 에러 관련 요소 설정 값들의 에러비율 최적화가 모두 완료될 때까지 상기 제2단계를 수행하는 제3단계를 포함하는 디지털 튜너의 채널 선국 방법.
- 제 3 항에 있어서, 상기 제2단계는,상기 제1단계에서 저장된 채널 주파수의 에러 관련 요소 설정 값의 최적화 에러 비율을 판단하는 제1과정; 및최적화 에러비율이면, 상기 최적화 에러비율을 저장하는 제2과정을 포함하는 디지털 튜너의 채널 선국 방법.
- 제 4 항에 있어서,최적화 에러비율이 아니면, 상기 판단 대상의 채널주파수에 대한 상기 에러 관련 요소 설정값을 변경하는 제3과정; 및 상기 제1과정을 수행하는 제4과정을 포함하는 디지털 튜너의 채널 선국 방법.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020080017211A KR101427749B1 (ko) | 2008-02-26 | 2008-02-26 | 디지털 튜너의 채널 선국 장치 및 방법 |
EP09714152A EP2257056A4 (en) | 2008-02-26 | 2009-02-25 | BROADCAST RECEIVING DEVICE AND CHANNEL SEARCH METHOD THEREFOR |
PCT/KR2009/000903 WO2009107980A1 (ko) | 2008-02-26 | 2009-02-25 | 방송 수신 장치 및 이의 채널 탐색 방법 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020080017211A KR101427749B1 (ko) | 2008-02-26 | 2008-02-26 | 디지털 튜너의 채널 선국 장치 및 방법 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20090091966A true KR20090091966A (ko) | 2009-08-31 |
KR101427749B1 KR101427749B1 (ko) | 2014-08-08 |
Family
ID=41016290
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020080017211A Expired - Fee Related KR101427749B1 (ko) | 2008-02-26 | 2008-02-26 | 디지털 튜너의 채널 선국 장치 및 방법 |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2257056A4 (ko) |
KR (1) | KR101427749B1 (ko) |
WO (1) | WO2009107980A1 (ko) |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3818694B2 (ja) * | 1996-05-15 | 2006-09-06 | ローム株式会社 | テレビジョン信号の受信回路 |
JP3078937U (ja) * | 2001-01-15 | 2001-07-27 | 船井電機株式会社 | テレビジョンチューナ及びテレビジョン受像機 |
JP3920575B2 (ja) * | 2001-01-22 | 2007-05-30 | 三洋電機株式会社 | デジタル放送受信機におけるチャンネル情報登録処理方法 |
GB0114593D0 (en) * | 2001-06-14 | 2001-08-08 | Pace Micro Tech Plc | Automatically adjusted AGC take over point |
JP3906792B2 (ja) | 2002-01-22 | 2007-04-18 | 松下電器産業株式会社 | 高周波信号受信装置とその製造方法 |
KR100474434B1 (ko) * | 2002-07-19 | 2005-03-10 | 삼성전자주식회사 | 디지털 영상시스템 및 그 제어방법 |
JP2004179928A (ja) * | 2002-11-27 | 2004-06-24 | Hitachi Ltd | デジタル放送受信装置、受信方法および受信回路 |
KR100624482B1 (ko) * | 2004-11-23 | 2006-09-18 | 삼성전자주식회사 | 인접 채널의 간섭 영향을 줄이는 튜닝 방법 및 그 장치 |
JP2006237780A (ja) * | 2005-02-23 | 2006-09-07 | Casio Hitachi Mobile Communications Co Ltd | 放送通信連携制御装置および放送通信連携制御方法 |
JP2006352187A (ja) * | 2005-06-13 | 2006-12-28 | Hitachi Ltd | 受信装置及び受信アンテナ設定方法 |
-
2008
- 2008-02-26 KR KR1020080017211A patent/KR101427749B1/ko not_active Expired - Fee Related
-
2009
- 2009-02-25 WO PCT/KR2009/000903 patent/WO2009107980A1/ko active Application Filing
- 2009-02-25 EP EP09714152A patent/EP2257056A4/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
WO2009107980A1 (ko) | 2009-09-03 |
EP2257056A1 (en) | 2010-12-01 |
KR101427749B1 (ko) | 2014-08-08 |
EP2257056A4 (en) | 2011-05-04 |
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