KR910001829Y1 - Teletext color auto-changing circuit - Google Patents
Teletext color auto-changing circuit Download PDFInfo
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- KR910001829Y1 KR910001829Y1 KR2019880001763U KR880001763U KR910001829Y1 KR 910001829 Y1 KR910001829 Y1 KR 910001829Y1 KR 2019880001763 U KR2019880001763 U KR 2019880001763U KR 880001763 U KR880001763 U KR 880001763U KR 910001829 Y1 KR910001829 Y1 KR 910001829Y1
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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
- G09G5/02—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed
- G09G5/06—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed using colour palettes, e.g. look-up tables
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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
- G09G5/22—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of characters or indicia using display control signals derived from coded signals representing the characters or indicia, e.g. with a character-code memory
- G09G5/222—Control of the character-code memory
- G09G5/225—Control of the character-code memory comprising a loadable character generator
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Processing Of Color Television Signals (AREA)
Abstract
내용 없음.No content.
Description
제1도 및 제2도는 종래의 회로도.1 and 2 are conventional circuit diagrams.
제3도는 본 고안의 문자표시 색상자동 절환회로도.3 is a letter automatic color switching circuit diagram of the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
TR10-TR15: 트랜지스터 D10-D15: 다이오드TR 10 -TR 15 : Transistor D10-D 15 : Diode
R10-R23: 저항R 10 -R 23 : resistance
본 고안은 텔레비젼 수상기 및 모니터등의 기기에 있어서, 문자표시 색상자동 절환회로에 관한 것으로, 특히문자표시 색상을 화면의 색상에 따라 자동으로 보색의 색상으로 변화되도록 하여 문자를 쉽게 식별할 수 있게한 문자표시 색상자동 절환회로에 관한 것이다.The present invention relates to a character display color automatic switching circuit in a device such as a television receiver and a monitor. In particular, the character display color is automatically changed into a complementary color according to the color of the screen so that characters can be easily identified. Text display color automatic switching circuit.
종래의 회로도를 제1도에 도시한 바와같이 전원단자(B+)에 전원이 인가되고, 그 인가된 전원이 저항(R1)및 제너다이오드(ZD1)를 통해 일정한 전원으로 트랜지스터(TR1)의 베이스에 인가되어 그가 온된 상태에서 문자 발생회로(1)에서 문자출력전압이 출력되면, 그 출력된 진압은 상기 트랜지스터(TR1)를 통해 다이오드(D1-3)을 각기 통한 후 가변저항(VR1-VR3)을 각기 통해 그 가변저항(VR1-VR3)의 가변에 따라 적 및 녹, 청색구동회로(2-4)에 인가되어 인위적으로 온스크린 문자의 색상을 출력시키도록 구성되었으나 이는 문자의 색상이화면의 색상과 동일의 색상이 되었을 경우에는 문자의 식별이 불가능한 결점이 있었다.As shown in FIG. 1, a power supply is applied to a power supply terminal B +, and the applied power supply is a transistor (TR 1 ) with a constant power supply through a resistor (R 1 ) and a zener diode (ZD 1 ). When the character output voltage is output from the character generating circuit 1 while being applied to the base of the signal generator, the output suppression passes through the diodes D 1-3 through the transistor TR 1 and then the variable resistor ( VR 1- VR 3 ) is applied to the red, green, and blue driving circuits 2-4 according to the variation of the variable resistors VR 1- VR 3 respectively to artificially output the color of the on-screen characters. However, this was a drawback that the character cannot be identified when the color of the text becomes the same color as the color of the screen.
그리고, 제2도에 도시한 경우에 있어서는 트랜지스터(TR1)에 의해 검출된 문자출력저압이 다이오드(D1)를통해 하나로 통일된 적, 녹, 청 구동회로(5)에 인가되어 문자의색상을 출력하도록 되어 이 역시 화면의 색상과동일색상이 되었을 경우에는 문자의 식별이 불가능한 결함이 있었다.In the case shown in FIG. 2, the letter output low voltage detected by the transistor TR 1 is applied to the red, green, and blue driving circuits 5, which are integrated into one through the diode D 1 , to color the letters. If the same color as the screen's color, the characters could not be identified.
본 고안은 이와같은 종래의 결함을 감안하여 문자표시색상을 화면의 색상에 따라 자동으로 보색의 색상으로변화되게 하여 쉽게 식별간하도록 안출한 것으로 이를 첨부한 도면에 의하여 상세히 설명하면 다음과 같다.The present invention in view of the conventional defects such that the character display color is automatically changed to the color of the complementary color according to the color of the screen is designed to easily identify between when described in detail by the accompanying drawings as follows.
제3도는 본 고안의 문자표시 색상절환 회로도로서 이에 도시한 바와 같이, 적색 및 녹색, 청색 입력단자(RIN) (GIN) (BIN)를 저항(R10) (R12) (R14)을 각기 통해 저항(R11) (R13) (R15) 및 콜렉터가 저항(R16)을 통해 전원단자(B+) 에 공통접속된 트랜지스터 (TR10) (TR11) (TR12)의 베이스에 각기 접속하고, 트랜지스터(TR10)-(TR12) 의 에미터는 저항(R17-R19) 및 콜렉터가 저항(R20)을 통해 문자발생회로(1')의 출력측에 공통접속된 트랜지스터(TR13-TR15)의 베이스에 각기 접속하며, 트랜지스터(TR13-TR15)의 에미터는 저항(R13-R15)의 에미터는 저항(R21-R25)을 각기 통한 후 다이오드(D10, Dl1)(D12, D13)(D14, D15)의 에노드에 각기 접속하여 적색 및 녹색, 청색신호 레벨검출 제어부(10)(11)(12)를 구성하고, 상기 다이오드(D10, D15)(D11, D12)(D13, D14)의 캐소드는 각각 녹색 및 청색, 적색 구동회로(2')(3')(4')에 접속하어 구성한 것이다.3 is a character display color switching circuit diagram of the present invention, as shown in the figure, red, green, and blue input terminals (RIN) (GIN) (BIN) to the resistor (R 10 ) (R 12 ) (R 14 ) respectively. Resistor (R 11 ) (R 13 ) (R 15 ) and collector are respectively connected to the base of transistor (TR 10 ) (TR 11 ) (TR 12 ) with common connection to power supply terminal (B +) via resistor (R 16 ). And the emitters of transistors TR 10 -TR 12 are transistors TR commonly connected to the output side of the character generator circuit 1 'through resistors R 17 -R 19 and collector R 20 . and respectively connected to the base of 13 -TR 15), a transistor (TR 13 -TR 15) emitter resistors (R 13 -R 15) the emitter resistor (R 21 -R 25) and then through respective diode (D 10 of the And D l1 ) (D 12 , D 13 ) (D 14 , D 15 ), respectively, to connect the red, green, and blue signal level detection control units 10, 11, and 12 to the anode. Cathode of D 10 , D 15 ) (D 11 , D 12 ) (D 13 , D 14 ) Are connected to the green, blue, and red driving circuits 2 ', 3', and 4 ', respectively.
이와같이 구성된 본 고안의 작용효과를 상세히 설명하면 다음과 같다. 전원단자(B+)에 전원이 인가되고,적색 및 녹색, 청색 신호입력단자(RIN)(GlN)(BIN)에 적 및 녹, 청색의 크로마신호가 입력되면, 그 입력된각각의 신호는 적색 및 청색, 녹색신호 레벨검출 제어부(10)(11)(12)의 저항(R10, R11)(R12, R13)(R14, R15)을 각기 통해 트랜지스터(TR10)(TR11)(TR12)의 베이스에 인가되므로 그 인가된 신호의 레벨에 따라 트랜지스터(TR10)(TR11)(TR12)는 각기 증폭되어 그의 에미터로 출력되고, 그 출력된 각각의 신호는 저항(R17)(R18)(R19)을 통한 후 트랜지스터(TR10)(TR11)(TR12)의 베이스에 인가된다.Referring to the effects of the present invention configured in this way in detail as follows. When power is supplied to the power supply terminal B +, and red, green, and blue chroma signals are input to the red, green, and blue signal input terminals RIN (GlN) (BIN), the respective signals are inputted in red and green. Transistors TR 10 and TR 11 through the resistors R 10 and R 11 (R 12 and R 13 ) R 14 and R 15 of the blue and green signal level detection control units 10, 11 and 12 , respectively. Is applied to the base of TR 12 , and according to the level of the applied signal, transistors TR 10 (TR 11 ) (TR 12 ) are amplified and output to their emitters, and each output signal is a resistor. After (R 17 ) (R 18 ) (R 19 ) it is applied to the base of transistors TR 10 (TR 11 ) (TR 12 ).
이와같은 상태에서 문자발생회로(1')에서 문자출력전압이 출력되면, 그 출력된 전압은 저항(R20)을 통한 후상기 트랜지스터(TR13)(TR14)(TR15)의 콜렉터에 인가되므로 상기에서 그의 베이스에 인가된 신호의 레벨에따라 트랜지스터(TR4)(TR5)(TR6) 의 콜렉터에 인가된 문자출력전압은 그의 에미터에 출력되어 저항(R21)(R22)(R23)및 다이오드(D10, D11)(D12, D13)(D14, D15)를 각기 통한후, 다이오드(D10)를 통한 신호는 다이오드(D15)를 통한 신호와 합성되어 녹색두동회로(2')에 입력되고, 다이오드(D11)를 통한 신호는 다이오드(D12)를 통한 신호와 함께 합성되어 청색구동회로(3')에 입력되며, 다이오드(D13)를 통한 신호는 다이오드(D14)를 통한 신호와함께 합성되어 적색구동회로(4')에 각기 입력된다.In this state, when the character output voltage is output from the character generation circuit 1 ', the output voltage is applied to the collector of the transistors TR 13 (TR 14 ) and TR 15 through the resistor R 20 . Therefore, according to the level of the signal applied to its base in the above, the character output voltage applied to the collector of the transistors TR 4 (TR 5 ) (TR 6 ) is output to its emitter and is a resistor R 21 (R 22 ). After (R 23 ) and diodes (D 10 , D 11 ) (D 12 , D 13 ) (D 14 , D 15 ) respectively, the signal through diode (D 10 ) is equal to the signal through diode (D 15 ). The synthesized signal is input to the green double-circuit circuit 2 ', and the signal through the diode D 11 is combined with the signal through the diode D 12 and input to the blue drive circuit 3', and the diode D 13 . The signal through is combined with the signal through the diode D 14 and input to the red driving circuit 4 ', respectively.
즉, 적색신호 레벨검출 제어부(10)의 다이오드(D10)(D11)를 통한 신호는 그의 보색을 이루는 녹색 및 청색구동회로(2')에 입력되고, 녹색신호 레벨검출 제어부(11)의 다이오드(D12)(D13)를 통한 신호는 청색 및 적색구동회로(3')(4')에 입력되며, 청색신호 레벨검출 제어부(12)의 다이오드(D14)(D15)를 각기 통해 적색 및 녹색구동회로(4')(2')에 입력되므로 텔레비젼 수상기의 화면색상에 반대되는 상기 구동회로(2')(3')(4')의 바이어스값이 변화되도록 하여 스크린에 출력되는 문자의 색상이 자동으로 보색을 이루게 된다.That is, the signal through the diodes D 10 (D 11 ) of the red signal level detection control unit 10 is input to the green and blue driving circuits 2 ′ forming their complementary colors, and the green signal level detection control unit 11 Signals through the diodes D 12 and D 13 are input to the blue and red drive circuits 3 'and 4', and the diodes D 14 and D 15 of the blue signal level detection control unit 12 are respectively. The red and green driving circuits are input to the red and green driving circuits 4 'and 2' so that the bias values of the driving circuits 2 ', 3' and 4 'which are opposite to the screen color of the television receiver are changed and output to the screen. The color of the text is automatically complementary.
이상에서 설명한 바와같이 본 고안은 텔레비젼 수상기의 화면에 표시되는 문자표시 색상을 텔레비젼 수상기의 화면 색상에 따라 자동으로 보색의 색상이 되도록 함으로써 종래의 동일 색상으로 인한 문자를 식별할수 없는 점과는 달리 쉽게 식별가능함은 물론 각양 각색의 문자표시색상을 출력시킬 수 있게되므로 제품에 대한 신뢰성이 향상되는 효과가 있다.As described above, the present invention allows the character display color displayed on the screen of the television receiver to be a complementary color automatically according to the screen color of the television receiver. Not only can it be distinguished, but it is also possible to output a variety of character display colors, thereby improving the reliability of the product.
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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KR2019880001763U KR910001829Y1 (en) | 1988-02-13 | 1988-02-13 | Teletext color auto-changing circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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KR2019880001763U KR910001829Y1 (en) | 1988-02-13 | 1988-02-13 | Teletext color auto-changing circuit |
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Publication Number | Publication Date |
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KR890018413U KR890018413U (en) | 1989-09-09 |
KR910001829Y1 true KR910001829Y1 (en) | 1991-03-28 |
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KR2019880001763U KR910001829Y1 (en) | 1988-02-13 | 1988-02-13 | Teletext color auto-changing circuit |
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KR (1) | KR910001829Y1 (en) |
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1988
- 1988-02-13 KR KR2019880001763U patent/KR910001829Y1/en not_active IP Right Cessation
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