TW493344B - Method and apparatus for autoprogramming a television receiver - Google Patents

Method and apparatus for autoprogramming a television receiver Download PDF

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Publication number
TW493344B
TW493344B TW089114120A TW89114120A TW493344B TW 493344 B TW493344 B TW 493344B TW 089114120 A TW089114120 A TW 089114120A TW 89114120 A TW89114120 A TW 89114120A TW 493344 B TW493344 B TW 493344B
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TW
Taiwan
Prior art keywords
channel
digital
analog
signal
microprocessor
Prior art date
Application number
TW089114120A
Other languages
English (en)
Inventor
Gene H Johnson
Matthew T Mayer
Aaron R Bouillet
Original Assignee
Thomson Licensing Sa
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.)
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Publication date
Application filed by Thomson Licensing Sa filed Critical Thomson Licensing Sa
Application granted granted Critical
Publication of TW493344B publication Critical patent/TW493344B/zh

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Classifications

    • 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
    • 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
    • H04N5/46—Receiver circuitry for the reception of television signals according to analogue transmission standards for receiving on more than one standard at will
    • 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
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/426—Internal components of the client ; Characteristics thereof
    • H04N21/42607—Internal components of the client ; Characteristics thereof for processing the incoming bitstream
    • H04N21/4263—Internal components of the client ; Characteristics thereof for processing the incoming bitstream involving specific tuning arrangements, e.g. two tuners
    • H04N21/42638—Internal components of the client ; Characteristics thereof for processing the incoming bitstream involving specific tuning arrangements, e.g. two tuners involving a hybrid front-end, e.g. analog and digital tuners
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Databases & Information Systems (AREA)
  • Circuits Of Receivers In General (AREA)
  • Superheterodyne Receivers (AREA)

Description

修正 五、發明說明（14) 493344 設定该局部接蕩頻率，这媒 之射頻信號為一附隨該增Ϊ相===器丨〇2可變換該進入 該方法3GG係進行步驟345里4關載波頻率之中頻。而後’ 位。如同步驟3 0 7及3 2 7 —祥決定該有線頻道是否為數 方法40G中。如該有線頻道2驟345係包括於圖4所示之 驟2 0 4，於該步驟，該有線〜頻\數在位妓，該方法3〇〇係進行步 位頻道。如該有線頻道為非頻//接受檢波並標記為-數 β t μ η Ω &為非數位，該方法3 0 〇係進行步驟 46 ’於該步驟，該方法300係假定 該電視接收機U0接收一附隨有線頻道之類比電視信號。 >该方法3^)0係進仃步驟348，於該步驟，係設定該局部振 蕩頻率，這樣，該諧調器1 〇2可變換該進入之射頻信號為 咼於增里相關載波頻率〇 · 1 8 7 5 Μ Η z之一中頻。在步驟 350 ’該微處理器114係決定該自動微調值是否為〇〇。如該 自動微調值等於00，該方法300即進行步驟352。如該自動 微調值不等於00，該方法300即進行步驟21〇。 在步驟3 5 2 ’係設定該局部振蕩頻率，這樣，該譜調器 1 0 2可變換該進入之射頻信號為低於該增量相關載波頻率 0.1875 MHz的一中頻。該方法300係進行步驟354，於該步 驟，該微處理器1 1 4係決定該自動微調值是否等於11。如 該自動微調值等於11，該方法300即進行步驟340，於該步 驟，該方法3 0 0係決定該微處理器1 1 4是否自該類比處理器 1 1 2檢波該同步或視頻同步信號。如該微處理器1 1 4檢波該 同步信號，該方法300即進行步驟322及步驟208，以供檢 波該有線頻道一有效類比頻道。如該微處理器1 1 4未能檢
O:\65\65279-910517.ptc 第19頁 493344 C^年 i〇 E 二Λ 日 修正 f正替換頁 .89114120 ^Έί 五、發明說明（t5T~~ 波該同步信號，該方法3 0 0即進行步驟2 1 0，於該步驟，該 有線頻道係接受為即非一有效類比亦非數位頻道之檢波。 圖4係說明檢波一數位頻道方法4 0 0之流程圖。該方法 4 0 0係決定一附隨數位信號之頻道是否為一數位頻道。在 步驟4 0 2，該方法4 0 0係起動一失效定時器二秒鐘。如此， 該方法4 0 0係必須在該定時器二秒鐘後停止前，檢波該選 定之數位頻道。該定時器係可消除該數位頻道方法4 0 0所 引起之延遲。 該方法4 0 0係進行步驟404，於該步驟，係選定該局部振 蕩頻率，這樣，該諧調器1 0 2可變換該進入之射頻信號為 與一供數位電視信號用之額定頻率值44MHz相等的中頻頻 率。在步驟40 6，該方法4 0 0係決定該微處理器114是否自 該數位解調器1 0 4接收該載波鎖定信號。如該微處理器1 1 4 接收該載波鎖定信號，該方法4 0 0即進行步驟4 0 8。如該微 處理器1 1 4未能接收該載波鎖定信號，該方法4 0 0即進行步 驟步驟4 1 0。 在步驟4 1 0，係選定該局部振蕩頻率，這樣，該諧調器 1 0 2可變換該射頻信號為高於該額定頻率6 2 . 5 k Hz之一中頻 頻率。該6 2. 5 kHz增量係代表該鎖相環路（PLL)積體電路 在該諧調器1 0 2中之分辨力。該方法4 0 0係進行步驟4 1 2， 於該步驟，該方法4 0 0係決定該微處理器1 1 4於該局部振蕩 頻率改變後，是否接收該載波鎖定信號。如該微處理器 1 1 4接收該載波鎖定信號，而後，該方法4 0 0即進行步驟 4 0 8。否則，該方法4 0 0係進行步驟4 1 4，於該步驟，該微
O:\65\65279-910517.ptc 第20頁 493344 (繁 替換頁 20 f年月以日 鉻γρ 五、發明說明 處理裔1 1 4係標記該檢波之頻道為非數位（或非有效數位頻 道）。在此處，該方法400係結束並重返該方法300。 在步驟4 0 8，該方法4 0 0係起動該數位基帶信號之符號定 時。該方法4 0 0係進行步驟41 6，於該步驟，該方法4 〇 〇係 決定該微處理器1 1 4是否自該數位解調器1 0 4接收一段鎖信 號。如該微處理器1 14接收該段鎖信號，該方法4 00即進 行步驟4 1 8。如該微處理器11 4未能接收該段鎮信號，該方 法4 0 0即進行步驟414。如此，如該微處理器1 14未能接收 該載波鎖定或段鎖信號，該頻道即非一有效數位頻道。 在步驟418，該方法400係決定該微處理器114是否自該 前向誤差改正模組1 0 6接收該前誤差改正鎖定信號。如該 微處理器1 1 4接收該前誤差改正鎖定信號，而後，該方法 4 0 0即進行步驟42 0。如該微處理器114未能接收該前誤差 改正鎖定信號，該方法4 〇 〇即進行步驟4 2 2。 在步驟420，該方法4〇〇係決定該微處理器114是否自該 前向誤差改正模組106接收Reed Solomon誤差率信號。如 該微處理器114接收該Reed Solomon誤差率信號，該方法 4 0 0即進行步驟424。在此情況下，該微處理器114係檢波 5亥選疋之頻道為數位並健存該結果於該記憶單元116中。 如此’在該定時器終止前，如得一載波鎖定，一段鎖，一 前誤差改正鎖定及一相當低Reed S〇i〇m〇n誤差率時，該頻 道係檢波為一有效數位頻道。如該微處理器丨丨4未能接收 該Reed Solomon誤差率信號，該方法4 〇〇即進行步驟 4 2 2 °
O:\65\65279-910517.ptc 第21頁 493344 圖式 修正替換頁 年月日 修正 200
O:\65\65279-910517.ptc 第 頁
TW089114120A 1999-07-16 2000-07-14 Method and apparatus for autoprogramming a television receiver TW493344B (en)

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Application Number Priority Date Filing Date Title
US14433699P 1999-07-16 1999-07-16

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TW493344B true TW493344B (en) 2002-07-01

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Country Status (8)

Country Link
EP (1) EP1197078A1 (zh)
JP (1) JP2003505949A (zh)
KR (1) KR100766366B1 (zh)
CN (1) CN1361983A (zh)
AU (1) AU5932400A (zh)
MX (1) MXPA02000554A (zh)
TW (1) TW493344B (zh)
WO (1) WO2001006775A1 (zh)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6924834B2 (en) 2002-04-16 2005-08-02 Tektronix, Inc. Analog or serial digital video input with automatic video switch
KR100441546B1 (ko) * 2002-09-16 2004-07-23 삼성전자주식회사 셋톱박스의 튜닝장치 및 그 튜닝방법
EP1706995A2 (en) * 2003-12-22 2006-10-04 THOMSON Licensing Method and apparatus for performing selectable channel search
CN100361516C (zh) * 2005-03-31 2008-01-09 四川长虹电器股份有限公司 双处理器电视控制方法
US20090161024A1 (en) * 2005-11-04 2009-06-25 Wen Gao Apparatus and Method for Sensing an ATSC Signal in Low Signal-To-Noise Ratio
CN1960449B (zh) * 2006-09-15 2010-05-12 四川长虹电器股份有限公司 数/模兼容电视机节目编号及转换方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3241098B2 (ja) * 1992-06-12 2001-12-25 株式会社東芝 多方式対応の受信装置
AU678626B2 (en) * 1993-10-14 1997-06-05 Ericsson Ge Mobile Communications Inc. Adaptive bandwidth receiver
FR2717026B1 (fr) * 1994-03-01 1996-03-29 Thomson Consumer Electronics Procédé de programmation de tuner et dispositif de mise en Óoeuvre.
KR100213048B1 (ko) * 1995-09-29 1999-08-02 윤종용 아날로그와 디지탈 비디오 모드를 갖는 수신기와 그 수신방법
KR100242881B1 (ko) * 1997-05-30 2000-02-01 전주범 방송용 복합 수신 시스템에서의 채널 전환 방법
KR100222994B1 (ko) * 1997-10-23 1999-10-01 윤종용 디지털 방송 수신기의 아날로그 방송 수신방법 및 장치

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Publication number Publication date
CN1361983A (zh) 2002-07-31
AU5932400A (en) 2001-02-05
EP1197078A1 (en) 2002-04-17
JP2003505949A (ja) 2003-02-12
MXPA02000554A (es) 2003-07-21
KR20020023410A (ko) 2002-03-28
WO2001006775A1 (en) 2001-01-25
WO2001006775A9 (en) 2002-08-08
KR100766366B1 (ko) 2007-10-11

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