KR940012834A - Switching circuit for common audio circuit - Google Patents

Switching circuit for common audio circuit Download PDF

Info

Publication number
KR940012834A
KR940012834A KR1019920021373A KR920021373A KR940012834A KR 940012834 A KR940012834 A KR 940012834A KR 1019920021373 A KR1019920021373 A KR 1019920021373A KR 920021373 A KR920021373 A KR 920021373A KR 940012834 A KR940012834 A KR 940012834A
Authority
KR
South Korea
Prior art keywords
terminal
line
diode
transistor
slp
Prior art date
Application number
KR1019920021373A
Other languages
Korean (ko)
Other versions
KR960005980B1 (en
Inventor
장윤선
Original Assignee
배순훈
대우전자 주식회사
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 배순훈, 대우전자 주식회사 filed Critical 배순훈
Priority to KR1019920021373A priority Critical patent/KR960005980B1/en
Publication of KR940012834A publication Critical patent/KR940012834A/en
Application granted granted Critical
Publication of KR960005980B1 publication Critical patent/KR960005980B1/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking

Landscapes

  • Electronic Switches (AREA)

Abstract

본 발명은 PAL(Phase Alternation by Line)컬러 방식과 NTSC(National Television System Committee)방식을 모두 수용하는 멀티 VCR시스템에서 녹화 및 재생시 선택되는 표준(SP), 긴시간(LP), 장시간 모드(SLP)를 제어하는 오디오 회로의 시정수를 공용화하기 위한 스위칭 회로에 관한 것이다.The present invention is a standard (SP), long time (LP), long time mode (SLP) selected during recording and playback in a multi-VCR system that accommodates both PAL (Phase Alternation by Line) and NTSC (National Television System Committee) method The present invention relates to a switching circuit for sharing a time constant of an audio circuit for controlling ().

본 발명의 실시예는 LP라인상에 순방향으로 직렬연결된 제1다이오드(3)와, SP단자에 일입력단이 연결되고 타입력단은 PAL단자에 연결되며 출력단은 상기 LP라인상의 다이오드(3)의 후단에 연결된 앤드 게이트(1)와, SLP라인 상에 순방향으로 직렬 연결된 제2다이오드(4)와, SLP단자에 일입력단이 연결되고 타입력단은 PAL단자에 연결되며 출력단은 상기 SLP라인상의 제2다이오드(4)의 후단에 연결된 앤드게이트(2)를 구비한 것을 특징으로 한다. 또한 본 발명의 다른 실시예에 따르면, 상기 앤드 게이트(2)는 트랜지스터 회로로도 구현될 수도 있다.In the embodiment of the present invention, the first diode 3 connected in series in the forward direction on the LP line, one input terminal is connected to the SP terminal, the type force terminal is connected to the PAL terminal, and the output terminal is the rear end of the diode 3 on the LP line. An AND gate (1) connected to the second diode (4) connected in series in the forward direction on the SLP line, one input terminal is connected to the SLP terminal, and the type force terminal is connected to the PAL terminal, and the output terminal is a second diode on the SLP line. It is characterized by including the end gate 2 connected to the rear end of (4). In addition, according to another embodiment of the present invention, the AND gate 2 may also be implemented as a transistor circuit.

Description

오디오 회로 공용을 위한 스위칭 회로Switching circuit for common audio circuit

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

제1도는 본 발명의 일실시에 따른 구성도,1 is a block diagram according to an embodiment of the present invention,

제2도는 본 발명의 다른 실시예에 따른 구성도.2 is a block diagram according to another embodiment of the present invention.

Claims (2)

LP라인상에 순방향으로 직렬연결된 제1다이오드(3)와; SP단자에 일입력단이 연결되고 타입력단은 PAL단자에 연결되며 출력단은 상기 LP라인상의 다이오드(3)의 후단에 연결된 논리곱 처리기인 제1앤드게이트(1)와 SLP라인상에 순방향으로 직렬연결된 제2다이오드(4)와; SLP단자에 일입력단이 연결되고 타입력단은 PAL단자에 연결되며 출력단은 상기 SLP라인상의 제2다이오드(4)의 후단에 연결된 논리곱 처리기인 제2앤드게이트(2)를 구비한 것을 특징으로 하는 오디오 시정수 공용을 위한 스위칭 회로.A first diode 3 connected in series in the forward direction on the LP line; One input terminal is connected to the SP terminal, and the type force terminal is connected to the PAL terminal. A second diode 4; One input terminal is connected to the SLP terminal, the type force terminal is connected to the PAL terminal, and the output terminal has a second AND gate 2 which is a logical product processor connected to the rear end of the second diode 4 on the SLP line. Switching circuit for common audio time constant. SLP라인상에서 순방향으로 직렬연결된 제1다이오드(4)와; 상기 LP라인상에서 순방향으로 직렬연결된 제2다이오드(3)와; 상기 제2다이오드(3)와 직렬로 연결된 저항(R1)과; 전원에 에미터가 연결된 제1트랜지스터(Q1)와; 상기 제1트랜지스터(Q1)의 컬렉터에 애노우드가 연결되고 캐소우드는 LP라인상의 상기 저항(R1)의 후단에 연결되는 제3다이오드(5)와; 상기 제1트랜지스터(Q1)의 베이스에 에미터가 연결되고 베이스 SP단자에 연결되며 에미터는 SLP라인상의 상기 제1다이오드(4)에 후단에 연결된 제2트랜지스터(Q2)와; 상기 제2트랜지스터(Q2)의 에미터와 공통으로 상기 SLP라인에 컬렉터가 연결되고 베이스에는 PAL단자가 연결되며 에미터는 접지된 제3트랜지스터(Q3)와, 상기 전원에 에미터가 연결된 제4트랜지스터(Q4)와; 상기 제4트랜지스터(Q4)의 컬렉터에 애노우드가 연결되며 캐소우드는 상기 SLP라인상의 제1다이오드(4)후단에 연결되는 제4다이오드(6)와; 상기 LP라인에 베이스가 연결되고 켈렉터는 상기 제4트랜지스터(Q4)의 베이스에 연결되며 에미터는 상기 제2트랜지스터(Q2)의 에미터 및 상기 제3트랜지스터(Q3)의 컬렉터와 공통으로 LP라인에 연결된 제5트랜지스터(Q5)를 구비하는 것을 특징으로 하는 오디오 시정수 공용을 위한 스위칭 회로.A first diode 4 connected in series in the forward direction on the SLP line; A second diode (3) connected in series in the forward direction on the LP line; A resistor (R1) connected in series with said second diode (3); A first transistor Q1 having an emitter connected to a power source; A third diode 5 having an anode connected to the collector of the first transistor Q1 and a cathode connected to a rear end of the resistor R1 on the LP line; An emitter connected to a base of the first transistor (Q1) and connected to a base SP terminal, and an emitter connected to the first diode (4) on an SLP line at a rear end thereof; The collector is connected to the SLP line in common with the emitter of the second transistor Q2, the PAL terminal is connected to the base, and the emitter is a grounded third transistor Q3 and a fourth transistor connected to the emitter to the power source. (Q4); An anode connected to a collector of the fourth transistor Q4 and a cathode connected to a rear end of the first diode 4 on the SLP line; A base is connected to the LP line, the collector is connected to the base of the fourth transistor Q4, and the emitter is an LP line in common with the emitter of the second transistor Q2 and the collector of the third transistor Q3. And a fifth transistor (Q5) connected to the switching circuit for audio time constant. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920021373A 1992-11-13 1992-11-13 Switching circuit for use of audio circuit KR960005980B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019920021373A KR960005980B1 (en) 1992-11-13 1992-11-13 Switching circuit for use of audio circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019920021373A KR960005980B1 (en) 1992-11-13 1992-11-13 Switching circuit for use of audio circuit

Publications (2)

Publication Number Publication Date
KR940012834A true KR940012834A (en) 1994-06-24
KR960005980B1 KR960005980B1 (en) 1996-05-06

Family

ID=19343123

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019920021373A KR960005980B1 (en) 1992-11-13 1992-11-13 Switching circuit for use of audio circuit

Country Status (1)

Country Link
KR (1) KR960005980B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190075472A (en) 2017-12-21 2019-07-01 주식회사 포스코 Apparatus for inspecting inner circumferential surface of strip coil

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190075472A (en) 2017-12-21 2019-07-01 주식회사 포스코 Apparatus for inspecting inner circumferential surface of strip coil

Also Published As

Publication number Publication date
KR960005980B1 (en) 1996-05-06

Similar Documents

Publication Publication Date Title
KR920009063A (en) Muting circuit for TV receiver
KR910005675A (en) TV system
KR900017293A (en) Audio and video switching device
KR850005038A (en) High voltage circuit
KR890001274A (en) Current mirror circuit
KR860003741A (en) Clamp circuit
KR860003704A (en) Video Signal Emphasis Circuit
KR940012834A (en) Switching circuit for common audio circuit
KR920003742A (en) Video signal average luminance level detection device
KR860000770A (en) Video AGC circuit
KR900017417A (en) TV receiver with auxiliary input connector
KR900008840A (en) DC regeneration circuit
KR980007776A (en) Primary video signal output circuit
KR890003207A (en) Vertical Deflection Circuit for Kinescope Yoke with Flyback Voltage Generator
KR970022721A (en) BNC / D-SUB Automatic Selection Circuit
KR920005460A (en) Amplification circuit
KR850006287A (en) Signal processing circuit
KR910009051A (en) Video signal level limit circuit
KR910021160A (en) Composite video signal generator
KR19980032628U (en) Spot improvement circuit of monitor
SU1185570A1 (en) Output two-step stage
JP3326305B2 (en) Luminance signal processing circuit
KR880008628A (en) Sharpness Compensation Device of Double Scan TV
KR950009698A (en) Teletext subtitle screen recording on / off device of VCR
KR890006075A (en) Television receiver circuit with regulated switching power supply

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
G160 Decision to publish patent application
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 19990430

Year of fee payment: 4

LAPS Lapse due to unpaid annual fee