JP2006191388A - 高周波信号受信装置 - Google Patents
高周波信号受信装置 Download PDFInfo
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- JP2006191388A JP2006191388A JP2005001739A JP2005001739A JP2006191388A JP 2006191388 A JP2006191388 A JP 2006191388A JP 2005001739 A JP2005001739 A JP 2005001739A JP 2005001739 A JP2005001739 A JP 2005001739A JP 2006191388 A JP2006191388 A JP 2006191388A
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- 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
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
- H03J1/0008—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor
- H03J1/0041—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor for frequency synthesis with counters or frequency dividers
- H03J1/005—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor for frequency synthesis with counters or frequency dividers in a loop
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- 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
- H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
- H04N21/41407—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance embedded in a portable device, e.g. video client on a mobile phone, PDA, laptop
-
- 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]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/61—Network physical structure; Signal processing
- H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
- H04N21/6112—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving terrestrial transmission, e.g. DVB-T
-
- 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]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/61—Network physical structure; Signal processing
- H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
- H04N21/6131—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving transmission via a mobile phone network
-
- 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
- H04N5/455—Demodulation-circuits
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- General Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Networks & Wireless Communication (AREA)
- Circuits Of Receivers In General (AREA)
- Superheterodyne Receivers (AREA)
Abstract
【解決手段】基準周波数信号生成部223は、基準周波数信号を生成して、高周波信号処理部221とディジタル復調部226に供給する。高周波信号処理部221は、放送波を受信して得られた高周波信号から、基準周波数信号を用いて所望のチャネルの信号を得る。アナログ復調部225は、高周波信号処理部221で得られた信号のアナログ復調処理を行う。ディジタル復調部226は、基準周波数信号を用いて高周波信号処理部221で得られた信号のディジタル復調処理を行う。地上アナログテレビジョン放送と地上ディジタルテレビジョン放送の視聴が可能であり、高周波信号処理部221とディジタル復調部226に基準周波数信号生成のための回路を設ける必要がなく小型化できる。
【選択図】 図2
Description
Claims (4)
- 基準周波数信号を生成する基準周波数信号生成手段と、
放送波を受信して得られた高周波信号から、前記基準周波数信号を用いて所望のチャネルの信号を得る高周波信号処理手段と、
前記高周波信号処理手段で得られた信号のアナログ復調処理を行うアナログ復調手段と、
前記高周波信号処理手段で得られた信号のディジタル復調処理を、前記基準周波数信号を用いて行うディジタル復調手段とを有する
ことを特徴とする高周波信号受信装置。 - 前記アナログ復調手段に対する電力供給を制御する電力供給制御手段を設け、
前記ディジタル復調手段では受信状況を示す情報の生成を行い、前記電力供給制御手段では前記受信状況を示す情報に基づき受信状況が所定レベルよりも悪化したと判別したとき前記アナログ復調手段に対して電力供給を行う
ことを特徴とする請求項1記載の高周波信号受信装置。 - 前記高周波信号処理手段は、
前記基準周波数信号を用いて複数段の周波数変換を行い、地上アナログテレビジョン放送における所望のチャネルの信号を得て前記アナログ復調手段に供給するアナログ放送用高周波信号処理手段と、
前記基準周波数信号を用いて前記アナログ放送用高周波信号処理手段よりも少ない段数の周波数変換を行い、地上ディジタルテレビジョン放送における所望のチャネルの信号を得て前記ディジタル復調手段に供給するディジタル放送用高周波信号処理手段を備える
ことを特徴とする請求項1記載の高周波信号受信装置。 - 前記アナログ放送用高周波信号処理手段と前記ディジタル放送用高周波信号処理手段と前記アナログ復調手段に対する電力供給を制御する電力供給制御手段を設け、
前記ディジタル復調手段では受信状況を示す情報の生成を行い、
前記電力供給制御手段は、前記ディジタル放送用高周波信号処理手段への電力供給中に前記受信状況を示す情報に基づき受信状況が所定レベルよりも悪化したと判別したとき、前記ディジタル放送用高周波信号処理手段に代えて前記アナログ放送用高周波信号処理手段と前記アナログ復調手段に対して電力供給を行う
ことを特徴とする請求項3記載の高周波信号受信装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005001739A JP4635609B2 (ja) | 2005-01-06 | 2005-01-06 | 高周波信号受信装置 |
US11/321,985 US7570924B2 (en) | 2005-01-06 | 2005-12-29 | High frequency signal receiving device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005001739A JP4635609B2 (ja) | 2005-01-06 | 2005-01-06 | 高周波信号受信装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006191388A true JP2006191388A (ja) | 2006-07-20 |
JP4635609B2 JP4635609B2 (ja) | 2011-02-23 |
Family
ID=36756112
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2005001739A Expired - Fee Related JP4635609B2 (ja) | 2005-01-06 | 2005-01-06 | 高周波信号受信装置 |
Country Status (2)
Country | Link |
---|---|
US (1) | US7570924B2 (ja) |
JP (1) | JP4635609B2 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2107804A2 (en) | 2008-03-31 | 2009-10-07 | Sony Corporation | Analog TV broadcast signal receiving apparatus and analog TV broadcast signal demodulating apparatus |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100764437B1 (ko) * | 2006-02-17 | 2007-10-05 | 삼성전기주식회사 | 전화신호 제거 회로, 디지털 방송 수신 회로 및 휴대용디지털 방송 수신기 |
JP2008017292A (ja) * | 2006-07-07 | 2008-01-24 | Denso Corp | ラジオ放送受信装置およびラジオ放送の自動選局装置 |
GB0718897D0 (en) * | 2007-09-27 | 2007-11-07 | British Telecomm | Communications system |
JP2015169949A (ja) * | 2014-03-04 | 2015-09-28 | 株式会社東芝 | 無線通信装置 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11341376A (ja) * | 1998-05-25 | 1999-12-10 | Sharp Corp | デジタル放送受信装置 |
JP2001217735A (ja) * | 2000-02-01 | 2001-08-10 | Clarion Co Ltd | 放送受信装置 |
JP2003309776A (ja) * | 2002-04-15 | 2003-10-31 | Sharp Corp | 地上波デジタル放送受信用チューナ |
JP2004056178A (ja) * | 2002-07-16 | 2004-02-19 | Fujitsu Ltd | 情報処理装置 |
JP2004221803A (ja) * | 2003-01-14 | 2004-08-05 | Sharp Corp | サイマル放送受信装置 |
Family Cites Families (12)
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JP2762178B2 (ja) | 1991-06-28 | 1998-06-04 | ソニー株式会社 | Tv受信用カード型電子チューナ |
US5193535A (en) * | 1991-08-27 | 1993-03-16 | Medtronic, Inc. | Method and apparatus for discrimination of ventricular tachycardia from ventricular fibrillation and for treatment thereof |
JP3241098B2 (ja) * | 1992-06-12 | 2001-12-25 | 株式会社東芝 | 多方式対応の受信装置 |
US5342402A (en) * | 1993-01-29 | 1994-08-30 | Medtronic, Inc. | Method and apparatus for detection and treatment of tachycardia and fibrillation |
US5447519A (en) * | 1994-03-19 | 1995-09-05 | Medtronic, Inc. | Method and apparatus for discrimination of monomorphic and polymorphic arrhythmias and for treatment thereof |
US5545186A (en) * | 1995-03-30 | 1996-08-13 | Medtronic, Inc. | Prioritized rule based method and apparatus for diagnosis and treatment of arrhythmias |
US6275732B1 (en) * | 1998-06-17 | 2001-08-14 | Cardiac Pacemakers, Inc. | Multiple stage morphology-based system detecting ventricular tachycardia and supraventricular tachycardia |
JP4048648B2 (ja) * | 1999-05-12 | 2008-02-20 | ソニー株式会社 | 高周波増幅回路および受信機 |
WO2000069517A1 (en) * | 1999-05-12 | 2000-11-23 | Medtronic, Inc. | Monitoring apparatus using wavelet transforms for the analysis of heart rhythms |
JP2001016135A (ja) * | 1999-06-29 | 2001-01-19 | Nec Corp | 自動周波数制御方法と自動周波数制御方式とcdma受信機 |
US6490478B1 (en) * | 2000-09-25 | 2002-12-03 | Cardiac Science Inc. | System and method for complexity analysis-based cardiac tachyarrhythmia detection |
US6748269B2 (en) * | 2001-10-17 | 2004-06-08 | Cardiac Pacemakers, Inc. | Algorithm for discrimination of 1:1 tachycardias |
-
2005
- 2005-01-06 JP JP2005001739A patent/JP4635609B2/ja not_active Expired - Fee Related
- 2005-12-29 US US11/321,985 patent/US7570924B2/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11341376A (ja) * | 1998-05-25 | 1999-12-10 | Sharp Corp | デジタル放送受信装置 |
JP2001217735A (ja) * | 2000-02-01 | 2001-08-10 | Clarion Co Ltd | 放送受信装置 |
JP2003309776A (ja) * | 2002-04-15 | 2003-10-31 | Sharp Corp | 地上波デジタル放送受信用チューナ |
JP2004056178A (ja) * | 2002-07-16 | 2004-02-19 | Fujitsu Ltd | 情報処理装置 |
JP2004221803A (ja) * | 2003-01-14 | 2004-08-05 | Sharp Corp | サイマル放送受信装置 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2107804A2 (en) | 2008-03-31 | 2009-10-07 | Sony Corporation | Analog TV broadcast signal receiving apparatus and analog TV broadcast signal demodulating apparatus |
US8264617B2 (en) | 2008-03-31 | 2012-09-11 | Sony Corporation | Analog TV broadcast signal receiving apparatus and analog TV broadcast signal demodulating apparatus |
Also Published As
Publication number | Publication date |
---|---|
US20060170827A1 (en) | 2006-08-03 |
JP4635609B2 (ja) | 2011-02-23 |
US7570924B2 (en) | 2009-08-04 |
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