JP4699205B2 - 信号処理回路 - Google Patents
信号処理回路 Download PDFInfo
- Publication number
- JP4699205B2 JP4699205B2 JP2005379013A JP2005379013A JP4699205B2 JP 4699205 B2 JP4699205 B2 JP 4699205B2 JP 2005379013 A JP2005379013 A JP 2005379013A JP 2005379013 A JP2005379013 A JP 2005379013A JP 4699205 B2 JP4699205 B2 JP 4699205B2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- level
- sync
- processing circuit
- signal processing
- 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.)
- Expired - Fee Related
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Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/14—Picture signal circuitry for video frequency region
- H04N5/16—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level
-
- 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
- H04N5/53—Keyed automatic gain control
-
- 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
-
- 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
- H04N7/00—Television systems
- H04N7/015—High-definition television systems
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Picture Signal Circuits (AREA)
- Controls And Circuits For Display Device (AREA)
- Facsimile Image Signal Circuits (AREA)
- Image Input (AREA)
Description
Claims (3)
- ハイビジョン映像信号をデジタル化するアナログ/デジタル変換部と、同期分離部と、を含む信号処理回路であって、
前記同期分離部は、ハイビジョン映像信号に含まれる黒レベルに対して負の電位を有する第2の同期信号レベルに基づいて、前記黒レベル及び前記黒レベルに対して正の電位を有する第1の同期信号レベルを検出し、
前記アナログ/デジタル変換部は、前記第1の同期信号レベルに基づいて定められた基準電圧に基づいてアナログ/デジタル変換を行うことを特徴とする信号処理回路。 - 請求項1に記載の信号処理回路であって、
前記増幅率は、前記第1の同期信号レベルと前記黒レベルとの差分値に基づいて定められることを特徴とする信号処理回路。 - 請求項1又は2に記載の信号処理回路であって、
前記同期分離部は、前記アナログ/デジタル変換部においてデジタル化されたハイビジョン映像信号から前記黒レベル及び第1の同期信号レベルを検出して前記アナログ/デジタル変換部へフィードバック入力することを特徴とする信号処理回路。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005379013A JP4699205B2 (ja) | 2005-12-28 | 2005-12-28 | 信号処理回路 |
CN2006101637239A CN1992840B (zh) | 2005-12-28 | 2006-12-04 | 信号处理电路 |
US11/642,903 US8089562B2 (en) | 2005-12-28 | 2006-12-20 | Signal processing circuit |
TW095148827A TWI331471B (en) | 2005-12-28 | 2006-12-25 | Signal processing circuit |
KR1020060134611A KR100824196B1 (ko) | 2005-12-28 | 2006-12-27 | 신호 처리 회로 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005379013A JP4699205B2 (ja) | 2005-12-28 | 2005-12-28 | 信号処理回路 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007181055A JP2007181055A (ja) | 2007-07-12 |
JP4699205B2 true JP4699205B2 (ja) | 2011-06-08 |
Family
ID=38192966
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2005379013A Expired - Fee Related JP4699205B2 (ja) | 2005-12-28 | 2005-12-28 | 信号処理回路 |
Country Status (5)
Country | Link |
---|---|
US (1) | US8089562B2 (ja) |
JP (1) | JP4699205B2 (ja) |
KR (1) | KR100824196B1 (ja) |
CN (1) | CN1992840B (ja) |
TW (1) | TWI331471B (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4977573B2 (ja) * | 2007-10-11 | 2012-07-18 | オンセミコンダクター・トレーディング・リミテッド | 映像信号処理装置におけるオートゲインコントロール回路 |
CN102256157B (zh) * | 2010-05-20 | 2013-04-03 | 北京创毅视讯科技有限公司 | 一种判断移动模拟电视视频信号畸变的方法和装置 |
US9476962B2 (en) * | 2013-05-02 | 2016-10-25 | The Boeing Company | Device, system and methods using angle of arrival measurements for ADS-B authentication and navigation |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0575895A (ja) * | 1991-09-13 | 1993-03-26 | Sony Corp | 映像信号の自動利得調整回路 |
JPH06276410A (ja) * | 1993-03-17 | 1994-09-30 | Victor Co Of Japan Ltd | レベル補正装置 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59123374A (ja) | 1982-12-28 | 1984-07-17 | Toshiba Corp | 自動映像利得制御回路 |
JPS62230168A (ja) | 1986-03-31 | 1987-10-08 | Toshiba Corp | デジタルテレビジヨン信号処理回路 |
KR920001012B1 (ko) * | 1987-07-07 | 1992-02-01 | 니뽄 덴끼 가부시끼가이샤 | 비데오신호 처리회로 |
KR900701120A (ko) * | 1988-04-04 | 1990-08-17 | 원본미기재 | 고선명 텔레비젼 신호 송수신 방법 및 시스템 |
US5272531A (en) * | 1992-12-07 | 1993-12-21 | Motorola, Inc. | Automatic gain control system for use in positive modulation which detects the peak white voltage level slowly while simultaneously adjusting black voltage level fluctuations quickly |
JPH07184142A (ja) | 1993-12-24 | 1995-07-21 | Sanyo Electric Co Ltd | ビデオ信号のagc回路 |
US5512958A (en) * | 1994-04-29 | 1996-04-30 | Matsushita Electric Corporation Of America | System for controlling the effects of noise in television receivers |
US6219107B1 (en) * | 1997-12-22 | 2001-04-17 | Texas Instruments Incorporated | Automatic AGC bias voltage calibration in a video decoder |
US7352406B2 (en) * | 2002-08-07 | 2008-04-01 | Thomson Licensing | Signal acquisition following transient signal interruption |
US6967691B2 (en) * | 2002-08-07 | 2005-11-22 | Thomson Licensing | Color difference signal processing |
CN1674085A (zh) * | 2004-03-26 | 2005-09-28 | 乐金电子(沈阳)有限公司 | 影像显示器信号处理装置及方法 |
JP5265193B2 (ja) * | 2004-10-28 | 2013-08-14 | ロヴィ・ソリューションズ・コーポレーション | 高精細テレビジョンのためのコンテンツ管理 |
US20070283297A1 (en) * | 2006-05-30 | 2007-12-06 | Thomas Hein | Signal processing circuit |
-
2005
- 2005-12-28 JP JP2005379013A patent/JP4699205B2/ja not_active Expired - Fee Related
-
2006
- 2006-12-04 CN CN2006101637239A patent/CN1992840B/zh not_active Expired - Fee Related
- 2006-12-20 US US11/642,903 patent/US8089562B2/en active Active
- 2006-12-25 TW TW095148827A patent/TWI331471B/zh not_active IP Right Cessation
- 2006-12-27 KR KR1020060134611A patent/KR100824196B1/ko not_active IP Right Cessation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0575895A (ja) * | 1991-09-13 | 1993-03-26 | Sony Corp | 映像信号の自動利得調整回路 |
JPH06276410A (ja) * | 1993-03-17 | 1994-09-30 | Victor Co Of Japan Ltd | レベル補正装置 |
Also Published As
Publication number | Publication date |
---|---|
TWI331471B (en) | 2010-10-01 |
US8089562B2 (en) | 2012-01-03 |
TW200726212A (en) | 2007-07-01 |
CN1992840A (zh) | 2007-07-04 |
KR20070070090A (ko) | 2007-07-03 |
JP2007181055A (ja) | 2007-07-12 |
US20070146184A1 (en) | 2007-06-28 |
CN1992840B (zh) | 2011-10-05 |
KR100824196B1 (ko) | 2008-04-21 |
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