KR950031641A - Pre-emphasis time constant change circuit - Google Patents

Pre-emphasis time constant change circuit Download PDF

Info

Publication number
KR950031641A
KR950031641A KR1019940010939A KR19940010939A KR950031641A KR 950031641 A KR950031641 A KR 950031641A KR 1019940010939 A KR1019940010939 A KR 1019940010939A KR 19940010939 A KR19940010939 A KR 19940010939A KR 950031641 A KR950031641 A KR 950031641A
Authority
KR
South Korea
Prior art keywords
time constant
emphasis
circuit
modulation stage
diode
Prior art date
Application number
KR1019940010939A
Other languages
Korean (ko)
Other versions
KR960011414B1 (en
Inventor
권경수
Original Assignee
이형도
삼성전기 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 이형도, 삼성전기 주식회사 filed Critical 이형도
Priority to KR1019940010939A priority Critical patent/KR960011414B1/en
Publication of KR950031641A publication Critical patent/KR950031641A/en
Application granted granted Critical
Publication of KR960011414B1 publication Critical patent/KR960011414B1/en

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01Frequency selective two-port networks
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H2210/00Indexing scheme relating to details of tunable filters
    • H03H2210/04Filter calibration method
    • H03H2210/043Filter calibration method by measuring time constant

Landscapes

  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
  • Transmitters (AREA)

Abstract

본 발명은 단일회로로 구성되는 FM 변조단 입력오디오 신호 강조용 프레엠파시스로부터 2가지 이상의 시정수값을 발생시키기 위한 프리엠파시스 시정수변경회로에 관한 것이다.The present invention relates to a pre-emphasis time constant change circuit for generating two or more time constant values from a pre-emphasis for emphasizing an input audio signal of an FM modulation stage composed of a single circuit.

본 발명은 특징은 프리엠파시스 시정수값을 결정하는 저항을 이분화시켜 놓고 그중 하나가 외부인가 전압인 방송방식 선택전압으로 온/오프 제어되는 스위칭 다이오드에 의해 선택적으로 단락되게 구성하는데 있다.The present invention is characterized in that the resistor for determining the pre-emphasis time constant value is divided into two parts, and one of them is selectively shorted by a switching diode controlled on / off by a broadcast method selection voltage, which is an externally applied voltage.

또한 핀파오드의 인가전압 크기에 따른 가변 저항값 특성을 이용하여 2가지 이상의 시정수값을 얻을 수 있는 구성도 제안한다.In addition, a configuration that can obtain two or more time constant values by using the variable resistance value characteristics according to the magnitude of the applied voltage of the pin power is also proposed.

이에 따라 다방송방식 수신 시스템에 있어서의 오디오 신호 FM 변조시에 요구되는 프리엠파시스 회로의 구성을 간략화 시킬 수 있게 된다.Accordingly, it is possible to simplify the configuration of the pre-emphasis circuit required for the audio signal FM modulation in the multi-broadcast reception system.

Description

프리엠파스시 시정수 변경회로Pre-emphasis time constant change circuit

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제2도는 본 발명에 따른 팜/NTSC 방송방식 선택을 위한 오디오 FM 변조용 프리엠파시스 시정수 변경회로도.2 is a pre-emphasis time constant change circuit diagram for audio FM modulation for palm / NTSC broadcasting system selection according to the present invention.

Claims (2)

방송방식별 오디오 입력신호를 서로 다른 시정수 값을 가지고 프리엠파시스시켜 FM 변조단에 전달하는 프리엠파시스 회로에 있어서, 오디오 신호를 입력하는 커플링 콘덴서(C11)와 FM 변조단(14) 사이에 직렬 접속된 제1,2 저항(R11,R12)과 콘덴서(C12)를 삽입하고, 상기 제1,2 저항(R11,R12)의 접속점에는 수신 방송방식에 따라 선택적으로 발생하는 방송방식 선택전압(V1)이 인가되는 스위칭 다이오드(D11)의 애노드측을 연결하고, 상기 스위칭 다이오드(D11)의 캐소드측은 FM 변조단(14)의 입력단에 접속된 오디오 레벨조정 및 바이어스 저항(R13)을 연결하는 것으로, 상기 방송방식 선택전압(V1)으로 온/오프 동작하는 스위칭 다이오드(D11)에 의해 상기 제2 저항(R12)이 선택적으로 단락되게 구성하여 제1,2 시정수 값을 발생시키는 것을 특징으로 하는 프리엠파시스 시정수 변경회로.In the pre-emphasis circuit for pre-emphasis the audio input signal by broadcasting method with different time constant value to the FM modulation stage, the coupling capacitor (C 11 ) and the FM modulation stage 14 for inputting the audio signal The first and second resistors R 11 and R 12 and the capacitor C 12 connected in series are inserted therebetween, and selectively connected to the connection points of the first and second resistors R 11 and R 12 according to the reception broadcast method. Connect the anode side of the switching diode D 11 to which the generated broadcasting method selection voltage V 1 is applied, and the cathode side of the switching diode D 11 is connected to an input level of the FM modulation stage 14. And a bias resistor (R 13 ), so that the second resistor (R 12 ) is selectively shorted by a switching diode (D 11 ) operating on / off with the broadcast mode selection voltage (V 1 ). Generating first and second time constant values Li-emphasis time constant circuit can be changed. 방송방식별 오디오 입력신호를 서로 다른 시정수 값을 가지고 프리엠파시스시켜 FM 변조단에 전달하는 프리엠파시스회로에 있어서, 오디오 신호를 입력하는 커플링 콘덴서(C11)와 FM 변조단(14) 사이에 직렬 접속된 고정 저항(R11)및 핀 다이오드(D12)와 콘덴서(C12)를 삽입하고, 상기 고정저항(R11)및 핀 다이오드(D|12)의 접속적인 핀다이오드 애노드측에는 상기 핀다이오드(D12)의 저항값을 변경하기 위한 제1,2 레벨을 갖는 방송방식 선택전압(V2)이 인가되게 연결하고, 상기 핀 다이오드(D12)의 캐소드측에 연결된 FM 변조단(14)의 입력단에는 오디오 레벨 조정및 바이어스 저항(R13)을 연결하는 것으로, 방송방식 선택 전압(V2)의 제1,2 레벨에 따라 핀다이오드(D12)의 내부저항 값이 변경되게 하여 제1,2 시정수값을 발생시키는 것을 특징으로 하는 프리엠파시스 시정수 변경회로.In the pre-emphasis circuit for pre-emphasis the audio input signal for each broadcasting method with different time constant value to pass to the FM modulation stage, the coupling capacitor (C 11 ) and the FM modulation stage 14 for inputting the audio signal A fixed resistor (R 11 ) and a pin diode (D 12 ) and a capacitor (C 12 ) connected in series are inserted between the pinned diode anode side of the fixed resistor (R 11 ) and the pin diode (D | 12 ). the pin diode (D 12) select the broadcasting system having a first and a second level for changing the resistance value of the voltage (V 2) connected in the application of, and FM modulation is connected to the cathode of the pin diode (D 12) only An audio level adjustment and a bias resistor R 13 are connected to an input terminal of the 14 to change the internal resistance value of the pin diode D 12 according to the first and second levels of the broadcast method selection voltage V 2 . To generate first and second time constants. -Emphasis time constant change circuit. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940010939A 1994-05-19 1994-05-19 Time constant change circuit KR960011414B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940010939A KR960011414B1 (en) 1994-05-19 1994-05-19 Time constant change circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940010939A KR960011414B1 (en) 1994-05-19 1994-05-19 Time constant change circuit

Publications (2)

Publication Number Publication Date
KR950031641A true KR950031641A (en) 1995-12-20
KR960011414B1 KR960011414B1 (en) 1996-08-22

Family

ID=19383384

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940010939A KR960011414B1 (en) 1994-05-19 1994-05-19 Time constant change circuit

Country Status (1)

Country Link
KR (1) KR960011414B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7583753B2 (en) 2004-08-16 2009-09-01 Samsung Electronics Co., Ltd. Methods and transmitters for loop-back adaptive pre-emphasis data transmission

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7583753B2 (en) 2004-08-16 2009-09-01 Samsung Electronics Co., Ltd. Methods and transmitters for loop-back adaptive pre-emphasis data transmission
US8699585B2 (en) 2004-08-16 2014-04-15 Samsung Electronics Co., Ltd. Transmitters for loop-back adaptive pre-emphasis data transmission

Also Published As

Publication number Publication date
KR960011414B1 (en) 1996-08-22

Similar Documents

Publication Publication Date Title
US4035728A (en) Diversity receiving system
KR860001485B1 (en) Analog switch circuit
EP0100177B1 (en) A differential signal receiver
KR950031641A (en) Pre-emphasis time constant change circuit
US20040095184A1 (en) Driving circuit and driving method of light emitting device and optical communication apparatus
US6081151A (en) Electronically controlled variable attenuator
US5436582A (en) Comparator device for selecting received signals
EP0127832B1 (en) Improved differential stage particularly for active filters
CA1070396A (en) R f oscillator and modulator
US6998915B2 (en) Apparatus for switching matching circuit in mobile communication terminal
KR930007598Y1 (en) Common pre-emphasis circuit for pal and ntsc-tv system
KR960008946B1 (en) Signal connecting circuit device
KR100257637B1 (en) Differential amplifier with limited output current
KR100709940B1 (en) Separation adjusting circuit
KR840008563A (en) Frequency selector
KR850001674Y1 (en) Tv tunner band changing circuit
US6259298B1 (en) Method and an arrangement for adapting from a DC point of view a first circuit to at least one second circuit
KR100403496B1 (en) Video Amplifiers and Video Display Devices
JPH08107325A (en) Digital transmission circuit
JPS60100836A (en) If band switching circuit of fm receiver
FI78587C (en) Signal processing circuitry in an imaging device
KR100262483B1 (en) Input selection switching circuit
KR920000925Y1 (en) Blanking level compensating circuit
JPS554168A (en) Multiplex signal processor
KR910001832Y1 (en) Midle color brighteness amplication circuit of tv circuit

Legal Events

Date Code Title Description
A201 Request for examination
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: 20040719

Year of fee payment: 9

LAPS Lapse due to unpaid annual fee