KR960008673Y1 - Circuit for using color television monitor as personal computer monitor - Google Patents

Circuit for using color television monitor as personal computer monitor Download PDF

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Publication number
KR960008673Y1
KR960008673Y1 KR92021441U KR920021441U KR960008673Y1 KR 960008673 Y1 KR960008673 Y1 KR 960008673Y1 KR 92021441 U KR92021441 U KR 92021441U KR 920021441 U KR920021441 U KR 920021441U KR 960008673 Y1 KR960008673 Y1 KR 960008673Y1
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KR
South Korea
Prior art keywords
cga
monitor
circuit
jack
signal
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KR92021441U
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Korean (ko)
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KR940014045U (en
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박진용
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배순훈
대우전자 주식회사
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Priority to KR92021441U priority Critical patent/KR960008673Y1/en
Publication of KR940014045U publication Critical patent/KR940014045U/en
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Publication of KR960008673Y1 publication Critical patent/KR960008673Y1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
    • H03K19/20—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits characterised by logic function, e.g. AND, OR, NOR, NOT circuits
    • H03K19/21—EXCLUSIVE-OR circuits, i.e. giving output if input signal exists at only one input; COINCIDENCE circuits, i.e. giving output only if all input signals are identical
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/66—Digital/analogue converters

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Controls And Circuits For Display Device (AREA)

Abstract

내용 없음.No content.

Description

씨지에이(CGA)잭을 이용한 칼라텔레비젼(C/TV)의 퍼스널 컴퓨터 모니터 겸용회로Color TV (C / TV) personal computer monitor dual circuit using CGA jack

도면은 본 고안에 따른 회로도이다.Figure is a circuit diagram according to the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

10 : CGA9핀 잭 20 : 디지털/아날로그 변환 IC10: CGA 9-pin jack 20: Digital / Analog Converter IC

30 : 익스클루시브-오아(XOR)게이트 H-SYNC : 수평동기 신호30: Exclusive-OR gate H-SYNC: Horizontal synchronization signal

V-SYNC : 수직동기 신호V-SYNC: Vertical Sync Signal

본 고안은 C/TV와 PC에 있어서, 상기 C/TV를 PC 모니터겸용으로 사용할 수 있도록 한 겸용회로에 관한 것으로, 특히 PC의 CGA보드입력에 사용되는 씨지에이(이하 CGA라 함)잭을 이용한 칼라 텔레비젼(이하 C/TV라 함)의 퍼스널컴퓨터(이하 PC라 함) 모니터 겸용회로에 관한 것이다.The present invention relates to a combined circuit that allows the C / TV to be used as a PC monitor in the C / TV and PC, in particular using the CGA (CGA) jack used for the CGA board input of the PC A personal computer (hereinafter referred to as a PC) monitor combined circuit of a color television (hereinafter referred to as C / TV).

일반적인 가정의 PC보급률이 점점 상승하고, 누구나 함께 쓰고 사용할 수 있는 정보의 매체라는 의미에서 PC와 TV는 맥을 같이 한다고 할 수 있다.In general, PC penetration is increasing, and PCs and TVs can be said to be Macs in the sense of a medium of information that anyone can write and use together.

또한 TV와 PC모니터, 양쪽 장치가 다 어떠한 내용을 사용자에게 디스플레이한다는 기능면에서도 상통하여 하나의 PC본체 및 모니터에 가정에 이미 구비되어 있는 TV를 연결하여 사용할 수 없을까하는 문제가 제기되고 이미 실현된 바도 적지 않다.In addition, both TV and PC monitors have the same function of displaying the contents to the user, which raises the question of whether one PC main body and the monitor can be used to connect a TV already in the home. The bar is not too small.

이에 본 고안도 상기와 같은 문제의식에 부응하여 안출된 것으로, 컴퓨터의 CGA보드 입력에 사용되는 CGA잭을 TV에 내장시키고 상기 CGA잭을 통하여 입력되는 TTL레벨의 디지털 출력을 아날로그 신호로 변환할 수 있도록 하는 디지털/아날로그 변환 IC를 구비함으로써 좀더 간단하고 저렴한 가격에서 TV를 PC의 모니터 겸용으로 사용할 수 있도록 한 CGA 잭을 이용한 C/TV의 PC모니터 겸용회로를 제공함을 목적으로 한다.The present invention has also been devised in response to the above-described problem, and the CGA jack used for the CGA board input of the computer can be built in the TV, and the TTL level digital output input through the CGA jack can be converted into an analog signal. It aims to provide a C / TV PC monitor circuit using a CGA jack that allows a TV to be used as a PC monitor at a simpler and lower price by having a digital / analog conversion IC.

이하 본 고안의 구성을 첨부된 도면을 참고로 하여 상세히 설명한다.Hereinafter, the configuration of the present invention will be described in detail with reference to the accompanying drawings.

도면은 본 고안을 실현하기 위한 각 장치간의 연결관계를 보인 개략적인 블록도로써, 컴퓨터의 CGA모니터로의 신호를 동시에 인가 받는 CGA 9핀 잭(10)과, 상기 CGA 9핀 잭(10)을 통해 인가된 디지털 R(RED), G(GREEN), B(BLUE) 신호를 아날로그로 변환하는 디지털/아날로그 변환 IC(20)와, 상기 CGA 9핀 잭(10)을 통해 인가된 수평 및 수직 동기신호를 합성하는 익스클루시브-오아 게이트(30)로 구성된다.Figure is a schematic block diagram showing the connection between each device for realizing the present invention, the CGA 9-pin jack 10 and the CGA 9-pin jack 10 that is simultaneously applied to the signal to the CGA monitor of the computer Digital / analog conversion IC 20 for converting digital R (RED), G (GREEN), and B (BLUE) signals applied through analog, and horizontal and vertical synchronization applied through the CGA 9-pin jack 10. It consists of an exclusive-or gate 30 that synthesizes the signal.

상기와 같이 구성된 본 고안을 작용 및 효과에 의거하여 좀 더 상세히 설명하면 다음과 같다.When the present invention configured as described above in more detail based on the action and effect are as follows.

컴퓨터의 CGA보드로부터 출력되는 모니터로의 신호 즉, R(RED), G(GREEN), B(BLUE), H-SYNE(수평동기 신호), V-SYNC(수직동기 신호)는 상기 CGA 9핀 잭(10)의 각 핀에 인가된다.Signals to the monitor output from the computer's CGA board, ie R (RED), G (GREEN), B (BLUE), H-SYNE (horizontal sync signal), V-SYNC (vertical sync signal) It is applied to each pin of the jack 10.

이때 상기 CGA 9핀 잭(10)을 통해 인가되는 신호는 컴퓨터로부터 출력되는 TTL레벨 즉, 디지털 신호이다.At this time, the signal applied through the CGA 9-pin jack 10 is a TTL level, that is, a digital signal output from the computer.

따라서, 상기 디지털 신호가 TV화면에 디스플레이 되기 위해서는 아날로그 변환되어야 한다.Therefore, the digital signal must be analog converted in order to be displayed on the TV screen.

상기 R, G, B신호는 디지털/아날로그 변환 IC(20)에 입력되어 아날로그 신호로 변환되어 출력되고, 상기 수평 및 수직 동기 신호는 익스클루시브-오아 게이트(30)에 의해 합성되어 복합 동기신호를 형성하게 된다.The R, G, and B signals are input to the digital / analog converter IC 20, converted into analog signals, and output, and the horizontal and vertical synchronization signals are synthesized by the exclusive-ora gate 30 to synthesize a composite synchronization signal. Will form.

상기와 같이 하여 각각 변환된 신호는 TV의 미도시된 영상처리부로 보내어지며, 상기 영상처리부는 상기 컴퓨터로부터 입력되어 변환된 신호를 일반적인 영상신호와 마찬가지로 처리하여 화면으로 디스플레이 하게 함으로써 PC의 모니터 겸용으로 사용할 수 있게 된다.As described above, each converted signal is sent to an image processing unit not shown in the TV. The image processing unit processes the converted signal inputted from the computer as a normal image signal and displays it on a screen so as to serve as a monitor of a PC. It becomes usable.

이상에서 설명한 바와 같이 본 고안의 CGA잭을 이용한 C/TV의 PC모니터 겸용회로는 단순히 CGA 9핀 잭과 디지털/아날로그 변환IC를 구비함으로써 좀 더 간단하고 저렴한 가격에서 TV를 PC의 모니터 겸용으로 사용할 수 있도록 하는 효과가 있다.As described above, the C / TV PC monitor circuit using the CGA jack of the present invention is simply equipped with a CGA 9-pin jack and a digital / analog converter IC so that the TV can be used as a PC monitor at a simpler and lower price. It has the effect of making it possible.

Claims (1)

C/TV에 있어서, 컴퓨터의 CGA보드로 부터의 신호가 입력되는 CGA 9핀 잭(10)과, 상기 CGA 9핀 잭(10)을 통해 인가된 디지털 신호를 아날로그로 변환하는 디지털/아날로그 변환 IC(20)와, 상기 CGA 9핀 잭(10)을 통해 인가된 수평 및 수직 동기신호를 합성하는 익스클루시브-오아 게이트(30)로 구성된 CGA잭을 이용한 C/TV의 PC모니터 겸용회로.In C / TV, a digital / analog conversion IC for converting a digital signal applied through a CGA 9-pin jack 10 through which a signal from a computer's CGA board is input and the CGA 9-pin jack 10 to analog. And a CGA TV combined circuit using a CGA jack composed of an exclusive ora gate (30) for synthesizing horizontal and vertical synchronization signals applied through the CGA 9-pin jack (20).
KR92021441U 1992-11-03 1992-11-03 Circuit for using color television monitor as personal computer monitor KR960008673Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR92021441U KR960008673Y1 (en) 1992-11-03 1992-11-03 Circuit for using color television monitor as personal computer monitor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR92021441U KR960008673Y1 (en) 1992-11-03 1992-11-03 Circuit for using color television monitor as personal computer monitor

Publications (2)

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KR940014045U KR940014045U (en) 1994-06-29
KR960008673Y1 true KR960008673Y1 (en) 1996-10-07

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