JP2006171125A - 表示装置及び自動同期判定回路 - Google Patents
表示装置及び自動同期判定回路 Download PDFInfo
- Publication number
- JP2006171125A JP2006171125A JP2004360601A JP2004360601A JP2006171125A JP 2006171125 A JP2006171125 A JP 2006171125A JP 2004360601 A JP2004360601 A JP 2004360601A JP 2004360601 A JP2004360601 A JP 2004360601A JP 2006171125 A JP2006171125 A JP 2006171125A
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- JP
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- Prior art keywords
- signal
- input
- synchronization
- counter
- determination
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-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/003—Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto
- G09G5/006—Details of the interface to the display terminal
- G09G5/008—Clock recovery
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/003—Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto
- G09G5/006—Details of the interface to the display terminal
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/06—Details of flat display driving waveforms
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2340/00—Aspects of display data processing
- G09G2340/04—Changes in size, position or resolution of an image
- G09G2340/0407—Resolution change, inclusive of the use of different resolutions for different screen areas
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
- Synchronizing For Television (AREA)
Abstract
【解決手段】液晶表示装置に、DEカウンタ10、判定器20から構成される自動同期判定回路を備える。DEカウンタ10は、1以上の所定数nのデータイネーブル(DE)信号をカウントすると、DC−RC信号をハイ(H)にしてストップする。判定器20は、電源投入時にHとし、DEカウンタ10から出力されるDC−RC信号の立ち上がりでロー(L)とし、変化がなければHのままとする判定信号DESを生成する。これにより、判定信号DESがHなら垂直同期(VSC)信号、水平同期(HSC)信号を基準信号とする「固定モード」と、LならDE信号を基準信号とする「DEモード」と判定する。
【選択図】 図1
Description
以下、図面を参照して、この発明の実施の形態について説明する。説明は、実施例を用いて具体的に行う。
20 判定器(判定手段)
Claims (6)
- 同期信号として、垂直同期信号、水平同期信号が入力、データイネーブル信号が未入力の状態では、垂直同期信号、水平同期信号を表示動作の基準信号と判定し、同期信号として、データイネーブル信号が入力、垂直同期信号、水平同期信号の一方又は双方が入力若しくは未入力の状態では、データイネーブル信号を表示動作の基準信号と判定する判定信号を出力する自動同期判定回路を有することを特徴とする表示装置。
- 前記自動同期判定回路が、データイネーブル信号のカウント結果に基づいて、1以上の所定数をカウントした場合には、データイネーブル信号を表示動作の基準信号と判定し、前記所定数をカウントしていない状態の場合には、垂直同期信号、水平同期信号を表示動作の基準信号と判定する判定信号を出力するものであることを特徴とする請求項1記載の表示装置。
- 前記自動同期判定回路が、1以上の所定数のデータイネーブル信号をカウントして停止するカウンタと、前記カウンタが前記所定数をカウントした場合には、データイネーブル信号を表示動作の基準信号と判定し、前記カウンタが前記所定数をカウントしていない状態の場合には、垂直同期信号、水平同期信号を表示動作の基準信号と判定する判定信号を出力する判定手段とを、有することを特徴とする請求項2記載の表示装置。
- 同期信号として、垂直同期信号、水平同期信号が入力、データイネーブル信号が未入力の状態では、垂直同期信号、水平同期信号を表示動作の基準信号と判定し、同期信号として、データイネーブル信号が入力、垂直同期信号、水平同期信号の一方又は双方が入力若しくは未入力の状態では、データイネーブル信号を表示動作の基準信号と判定する判定信号を出力するものであることを特徴とする自動同期判定回路。
- 前記データイネーブル信号のカウント結果に基づいて、1以上の所定数をカウントした場合には、データイネーブル信号を表示動作の基準信号と判定し、前記所定数をカウントしていない状態の場合には、垂直同期信号、水平同期信号を表示動作の基準信号と判定する判定信号を出力するものであることを特徴とする請求項4記載の自動同期判定回路。
- 前記1以上の所定数のデータイネーブル信号をカウントして停止するカウンタと、前記カウンタが前記所定数をカウントした場合には、データイネーブル信号を表示動作の基準信号と判定し、前記カウンタが前記所定数をカウントしていない状態の場合には、垂直同期信号、水平同期信号を表示動作の基準信号と判定する判定信号を出力する判定手段とを、有することを特徴とする請求項5記載の自動同期判定回路。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004360601A JP2006171125A (ja) | 2004-12-13 | 2004-12-13 | 表示装置及び自動同期判定回路 |
US11/297,449 US20060125747A1 (en) | 2004-12-13 | 2005-12-09 | Display device and automatic synchronization judging circuit |
KR1020050121650A KR100772268B1 (ko) | 2004-12-13 | 2005-12-12 | 표시 장치 및 자동 동기 판정 회로 |
TW094143802A TWI270034B (en) | 2004-12-13 | 2005-12-12 | Display device and automatic synchronization judging circuit |
CNB2005101369974A CN100433124C (zh) | 2004-12-13 | 2005-12-13 | 显示装置和自动同步判定电路 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004360601A JP2006171125A (ja) | 2004-12-13 | 2004-12-13 | 表示装置及び自動同期判定回路 |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2006171125A true JP2006171125A (ja) | 2006-06-29 |
Family
ID=36583199
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004360601A Pending JP2006171125A (ja) | 2004-12-13 | 2004-12-13 | 表示装置及び自動同期判定回路 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20060125747A1 (ja) |
JP (1) | JP2006171125A (ja) |
KR (1) | KR100772268B1 (ja) |
CN (1) | CN100433124C (ja) |
TW (1) | TWI270034B (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101789222B (zh) * | 2009-01-22 | 2012-05-23 | 联咏科技股份有限公司 | 用数据使能信号控制显示器时序的方法及时序控制电路 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH113070A (ja) * | 1997-04-18 | 1999-01-06 | Fujitsu Ltd | 液晶表示パネル用コントローラ及び制御方法並びに液晶表示装置 |
JP2002278493A (ja) * | 2001-03-21 | 2002-09-27 | Matsushita Electric Ind Co Ltd | 画像表示装置 |
JP2003167545A (ja) * | 2001-11-30 | 2003-06-13 | Sharp Corp | 画像表示用信号の異常検出方法および画像表示装置 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR0158646B1 (ko) * | 1995-11-28 | 1999-03-20 | 김광호 | 액정표시장치의 모드 자동 검출회로 |
KR0156804B1 (ko) * | 1995-11-28 | 1998-12-15 | 김광호 | 데이타 인에이블 신호를 이용하여 바이오스에 관계없이 프리챠지를 하는 스타트 펄스 버티컬 신호 생성기 |
KR0158645B1 (ko) * | 1995-11-28 | 1999-03-20 | 김광호 | 액정표시장치의 데이터 인에이블 모드 우선 순위 검출회로 |
JP3150631B2 (ja) * | 1996-11-19 | 2001-03-26 | 松下電器産業株式会社 | 液晶表示装置 |
US6288713B1 (en) * | 1997-12-29 | 2001-09-11 | Hyundai Electronics Industries Co., Ltd. | Auto mode detection circuit in liquid crystal display |
US6753856B1 (en) * | 1998-05-12 | 2004-06-22 | Apple Computer, Inc. | System and method for dynamic correction of display characteristics |
KR100559226B1 (ko) * | 2000-12-29 | 2006-03-15 | 비오이 하이디스 테크놀로지 주식회사 | 액정표시장치모듈의 모드검출회로 |
JP2002271647A (ja) * | 2001-03-09 | 2002-09-20 | Nec Microsystems Ltd | 画像表示装置、該装置に用いられる制御方法及び制御プログラム |
KR100472461B1 (ko) * | 2002-07-11 | 2005-03-10 | 삼성전자주식회사 | 비 정상 비디오 신호를 판별하는 디스플레이 장치 및 그방법 |
KR20040009815A (ko) * | 2002-07-26 | 2004-01-31 | 삼성전자주식회사 | 액정 표시 장치 및 그 구동 방법 |
-
2004
- 2004-12-13 JP JP2004360601A patent/JP2006171125A/ja active Pending
-
2005
- 2005-12-09 US US11/297,449 patent/US20060125747A1/en not_active Abandoned
- 2005-12-12 TW TW094143802A patent/TWI270034B/zh not_active IP Right Cessation
- 2005-12-12 KR KR1020050121650A patent/KR100772268B1/ko not_active IP Right Cessation
- 2005-12-13 CN CNB2005101369974A patent/CN100433124C/zh not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH113070A (ja) * | 1997-04-18 | 1999-01-06 | Fujitsu Ltd | 液晶表示パネル用コントローラ及び制御方法並びに液晶表示装置 |
JP2002278493A (ja) * | 2001-03-21 | 2002-09-27 | Matsushita Electric Ind Co Ltd | 画像表示装置 |
JP2003167545A (ja) * | 2001-11-30 | 2003-06-13 | Sharp Corp | 画像表示用信号の異常検出方法および画像表示装置 |
Also Published As
Publication number | Publication date |
---|---|
CN1790476A (zh) | 2006-06-21 |
CN100433124C (zh) | 2008-11-12 |
KR20060066651A (ko) | 2006-06-16 |
TWI270034B (en) | 2007-01-01 |
KR100772268B1 (ko) | 2007-11-01 |
TW200620203A (en) | 2006-06-16 |
US20060125747A1 (en) | 2006-06-15 |
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