KR950035067A - Tuner - Google Patents

Tuner Download PDF

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Publication number
KR950035067A
KR950035067A KR1019940010187A KR19940010187A KR950035067A KR 950035067 A KR950035067 A KR 950035067A KR 1019940010187 A KR1019940010187 A KR 1019940010187A KR 19940010187 A KR19940010187 A KR 19940010187A KR 950035067 A KR950035067 A KR 950035067A
Authority
KR
South Korea
Prior art keywords
local oscillator
tuner
mixer
signals
vhf
Prior art date
Application number
KR1019940010187A
Other languages
Korean (ko)
Inventor
방승인
Original Assignee
이종수
엘지전자부품 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 이종수, 엘지전자부품 주식회사 filed Critical 이종수
Priority to KR1019940010187A priority Critical patent/KR950035067A/en
Publication of KR950035067A publication Critical patent/KR950035067A/en

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  • Superheterodyne Receivers (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Abstract

본 발명은 소정의 제어신호에 의해 발진주파수가 가변되는 국부발진기와, 상기 국부발진기의 출력과 안테나에 수시되어 증폭된 VHF 및 UHF 대의 RF 신호를 혼합하는 혼합기와, 상기 혼합기에서 증폭된 신호를 입력으로 하여 선국된 VHF 및 UHF 대 채널의 중간주파수를 출력하는 IF 동조부로 이루어져 하나의 혼합기와 국부발진기 및 IF 동조회로를 사용하여 안테나에 수신된 RF 신호중에서 VHF 와 UHF 신호를 선국하는 튜너에 관한 것이다.The present invention provides a local oscillator whose oscillation frequency is varied by a predetermined control signal, a mixer for mixing the output of the local oscillator and the RF signals of the VHF and UHF bands received and amplified by the antenna, and the signals amplified by the mixer. The present invention relates to a tuner for tuning a VHF and UHF signal among RF signals received at an antenna by using a mixer, a local oscillator, and an IF tuning circuit. .

Description

튜너Tuner

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

제2도는 본 발명에 의한 전자동조 튜너의 블록도, 제3도는 본 발명에 따른 전자동조 튜너에서 사용된 국부발진기의 실시예시도.2 is a block diagram of a fully tuned tuner according to the present invention, and FIG. 3 is an exemplary embodiment of a local oscillator used in the fully tuned tuner according to the present invention.

Claims (3)

소정의 제어신호에 의해 발진주파수가 가변되는 국부발진기와, 상기 국부발진기의 출력과 안테나에 수신되어 증폭된 VHF 및 UHF 대의 RF 신호를 혼합하는 혼합기와, 상기 혼합기에서 증폭된 신호를 입력으로 하여 선국된 VHF 및 UHF 대 채널의 중간주파수를 출력하는 IF 동조부로 이루어진 것을 특징으로 하는 튜너.A local oscillator whose oscillation frequency is varied by a predetermined control signal, a mixer which mixes the output of the local oscillator and the RF signals of the VHF and UHF bands received and amplified by the antenna, and the signals amplified by the mixer as inputs. A tuner comprising an IF tuner for outputting intermediate frequencies of the VHF and UHF channels. 제1항에 있어서, 상기 국부발진기는 직렬로 연결된 다수개의 코일(L1~L3)과 콘덴서(C1)로 된 공진회로와, 상기 공진회로의 다수개의 코일(L1~L3) 사이에 연결되어 소정의 제어전압에 의해서 스위칭되어 밴드를 절환하는 다수개의 다이오드(D1)(D2)로 구성된 것을 특징으로 하는 튜너.The method of claim 1, wherein the local oscillator is connected between a plurality of coils (L1 ~ L3) and a capacitor (C1) connected in series, and a plurality of coils (L1 ~ L3) of the resonant circuit is a predetermined A tuner comprising a plurality of diodes (D1) (D2) for switching bands by switching by a control voltage. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940010187A 1994-05-10 1994-05-10 Tuner KR950035067A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940010187A KR950035067A (en) 1994-05-10 1994-05-10 Tuner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940010187A KR950035067A (en) 1994-05-10 1994-05-10 Tuner

Publications (1)

Publication Number Publication Date
KR950035067A true KR950035067A (en) 1995-12-30

Family

ID=66681914

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940010187A KR950035067A (en) 1994-05-10 1994-05-10 Tuner

Country Status (1)

Country Link
KR (1) KR950035067A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100702154B1 (en) * 2005-08-09 2007-04-02 엘지이노텍 주식회사 double tuner

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100702154B1 (en) * 2005-08-09 2007-04-02 엘지이노텍 주식회사 double tuner

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Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E601 Decision to refuse application