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KR960016472A - TV receiver with mode switching - Google Patents

TV receiver with mode switching Download PDF

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Publication number
KR960016472A
KR960016472A KR1019940027442A KR19940027442A KR960016472A KR 960016472 A KR960016472 A KR 960016472A KR 1019940027442 A KR1019940027442 A KR 1019940027442A KR 19940027442 A KR19940027442 A KR 19940027442A KR 960016472 A KR960016472 A KR 960016472A
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KR
South Korea
Prior art keywords
signal
level
mode
input
output
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Application number
KR1019940027442A
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Korean (ko)
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KR100257257B1 (en
Inventor
장석원
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배순훈
대우전자 주식회사
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Priority to KR1019940027442A priority Critical patent/KR100257257B1/en
Publication of KR960016472A publication Critical patent/KR960016472A/en
Application granted granted Critical
Publication of KR100257257B1 publication Critical patent/KR100257257B1/en
Anticipated expiration legal-status Critical
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/222—Studio circuitry; Studio devices; Studio equipment
    • H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
    • H04N5/268—Signal distribution or switching
    • 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
    • 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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  • Engineering & 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)
  • Studio Circuits (AREA)
  • Details Of Television Systems (AREA)

Abstract

본 발명은 스카트 잭을 통하여 외부기기로부터 R, G, B신호가 인가되고 있는 경우에도 사용자의 선택적 키 조작에 따라 RF모드로의 전환이 가능하도록 된 텔레비젼 수상기에 관한 것으로, 본체의 표면에 스카트 잭을 접속하기 위한 소켓을 구비함과 더불어, 상기 스카트 잭의 FB 신호 출력단자를 통하여 인가되는 FB(FAST BLANKING)신호의 입력 레벨에 따라 이 FB 신호의 레벨이 제1레벨인 경우에는 그 동작 모드가 외부 기기에 의한 R, G, B 모드로 전환되고 제2레벨인 경우에는 수신된 방송신호에 의한 RF 모드로 전환되는 크로마 IC를 구비한 텔레비젼 수상기에 있어서, 시청자의 선택 입력에 따라 R, G, B 모드 또는 RF 모드로의 전환신호를 출력하는 모드 선택수단과, 상기 모드 선택수단으로부터의 모드 전환신호 입력여부에 따라 제1 또는 제2레벨의 제어신호를 출력하는 제어수단, 상기 스카트 잭을 통하여 인가되는 FB 신호의 레벨을 반전시키는 인버터 및 이 인버터로부터 출력되는 신호와 상기 제어수단으로부터 출력되는 신호를 입력받아 이 두 신호의 레벨이 모두 제2레벨인 경우에만 상기 크로마 IC의 FB 신호 입력단자로 제1레벨의 신호를 출력하도록 된 NOR게이트를 포함하여 구성된 것을 특징으로 한다.The present invention relates to a television receiver capable of switching to RF mode according to a user's selective key operation even when an R, G, or B signal is applied from an external device through a skat jack. In addition, the operation mode is provided when the level of the FB signal is the first level according to the input level of the FB (FAST BLANKING) signal applied through the FB signal output terminal of the skat jack. In a television receiver having a chroma IC which is switched to an R, G, B mode by an external device and is switched to an RF mode by a received broadcast signal in the case of the second level, R, G, Mode selection means for outputting a switching signal to the B mode or the RF mode and a control signal of the first or second level depending on whether the mode switching signal is input from the mode selecting means; Control means, an inverter for inverting the level of the FB signal applied through the skat jack, and a signal output from the inverter and a signal output from the control means are received only when the level of both signals is the second level. And a NOR gate configured to output a first level signal to the FB signal input terminal of the chroma IC.

Description

모드 전환기능을 갖춘 텔레비젼 수상기TV receiver with mode switching

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제2도는 본 발명의 1실시예에 따른 모드 전환기능을 갖춘 텔레비젼 수상기의 블럭 구성도.2 is a block diagram of a television receiver having a mode switching function according to an embodiment of the present invention.

Claims (1)

본체의 표면에 스카트 잭을 접속하기 위한 소켓을 구비함과 더불어, 상기 스카트 잭의 FB 신호 출력단자를 통하여 인가되는 FB(FAST BLANKINC)신호의 입력 레벨에 따라 이 FB 신호의 레벨이 제1레벨인 경우에는 그 동작 모드가 외부기기에 의한 R, G, B 모드로 전환되고 제2레벨인 경우에는 수신된 방송신호에 의한 RF 모드로 전환되는 크로마 IC를 구비한 텔레비젼 수상기에 있어서, 시청자의 선택 입력에 따라 R, G, B 모드 또는 RF 모드로의 전환신호를 출력하는 모드 선택수단과, 상기 모드 선택수단으로부터의 모드 전환신호 입력여부에 따라 제1 또는 제2레벨의 제어신호를 출력하는 제어수단, 상기 스카트 잭을 통하여 인가되는 FB 신호의 레벨을 반전시키는 인버터, 및 이 인버터로부터 출력되는 신호와 상기 제어수단으로부터 출력되는 신호를 입력받아 이 두 신호의 레벨이 모두 제2레벨인 경우에만 상기 크로마 IC의 FB 신호 입력단자로 제1레벨의 신호를 출력하도록 된 NOR케이트를 포함하여 구성된 것을 특징으로 하는 모드 전환기능을 갖춘 텔레비젼 수상기.A socket for connecting the scart jack to the surface of the main body, and the level of the FB signal is the first level according to the input level of the FB (FAST BLANKINC) signal applied through the FB signal output terminal of the scart jack. In the case of a television receiver having a chroma IC which is switched to an R, G, B mode by an external device in case of the second mode and an RF mode by a received broadcast signal in case of the second level, the viewer's selection input Mode selection means for outputting a switching signal to the R, G, B mode or the RF mode, and control means for outputting a control signal of the first or second level depending on whether the mode switching signal is input from the mode selection means. And an inverter for inverting the level of the FB signal applied through the skat jack, and a signal output from the inverter and a signal output from the control means. TV set with a mode switching function, characterized in that configured to include a NOR locate only if all of the call level, the second level to the FB signal input terminal of the chroma IC to output a signal at a first level. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940027442A 1994-10-26 1994-10-26 Television having a mode transition function Expired - Fee Related KR100257257B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940027442A KR100257257B1 (en) 1994-10-26 1994-10-26 Television having a mode transition function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940027442A KR100257257B1 (en) 1994-10-26 1994-10-26 Television having a mode transition function

Publications (2)

Publication Number Publication Date
KR960016472A true KR960016472A (en) 1996-05-22
KR100257257B1 KR100257257B1 (en) 2000-05-15

Family

ID=19395940

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940027442A Expired - Fee Related KR100257257B1 (en) 1994-10-26 1994-10-26 Television having a mode transition function

Country Status (1)

Country Link
KR (1) KR100257257B1 (en)

Also Published As

Publication number Publication date
KR100257257B1 (en) 2000-05-15

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