KR960016127A - Satellite and cable tuners - Google Patents

Satellite and cable tuners Download PDF

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Publication number
KR960016127A
KR960016127A KR1019940028287A KR19940028287A KR960016127A KR 960016127 A KR960016127 A KR 960016127A KR 1019940028287 A KR1019940028287 A KR 1019940028287A KR 19940028287 A KR19940028287 A KR 19940028287A KR 960016127 A KR960016127 A KR 960016127A
Authority
KR
South Korea
Prior art keywords
broadcast
broadcasting
mode
unit
control signal
Prior art date
Application number
KR1019940028287A
Other languages
Korean (ko)
Other versions
KR0134265B1 (en
Inventor
장재선
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 KR1019940028287A priority Critical patent/KR0134265B1/en
Publication of KR960016127A publication Critical patent/KR960016127A/en
Application granted granted Critical
Publication of KR0134265B1 publication Critical patent/KR0134265B1/en

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Classifications

    • 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
    • H04N5/50—Tuning indicators; Automatic tuning control
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H03J3/02—Details
    • H03J3/06—Arrangements for obtaining constant bandwidth or gain throughout tuning range or ranges
    • H03J3/08—Arrangements for obtaining constant bandwidth or gain throughout tuning range or ranges by varying a second parameter simultaneously with the tuning, e.g. coupling bandpass filter
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Superheterodyne Receivers (AREA)

Abstract

본 발명은 위성방송과 케이블방송을 겸용으로 사용하는 위성 및 케이블방송용 튜너에 관한 것으로, 사용자에 의해 선택되어 방송모드에 대응되는 주파수대역의 제어신호 및 이 선택된 방송모드에 대응되는 발진주파수의 제어신호를 인가하는 방송모드 선택부; 방송모드 선택부의 선택제어신호에 의해 수신되는 방송신호 중 소정의 방송모드만을 선별하여 출력하는 전처리부; 전치리부에서 출력되는 방송모드에 대응되는 처리루프를 선택하여 출력하는 후처리부를 포함하도록 구성된다.The present invention relates to a tuner for satellite and cable broadcasting using both satellite broadcasting and cable broadcasting. The present invention relates to a control signal of a frequency band selected by a user and corresponding to a broadcast mode, and a control signal of an oscillation frequency corresponding to the selected broadcast mode. A broadcast mode selection unit for applying a; A preprocessor which selects and outputs only a predetermined broadcast mode among broadcast signals received by the selection control signal of the broadcast mode selector; And a post-processing unit for selecting and outputting a processing loop corresponding to the broadcast mode output from the pre-treatment unit.

Description

위성 및 케이블방송용 튜너Satellite and cable tuners

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

제2도는 본 발명의 위성 및 케이블방송용 튜너를 도시한 블럭도.2 is a block diagram showing a satellite and cable broadcast tuner of the present invention.

Claims (3)

사용자에 의해 선택되어 방송모드에 대응되는 주파수대역의 제어신호 및 이 선택된 방송모드에 대응되는 발진주파수의 제어신호를 인가하는 방송모드 선택부; 상기 방송모드 선택부의 선택제어신호에 의해 수신되는 방송신호 중 소정의 방송모드만을 선별하여 출력하는 전처리부; 상기 전치리부에서 출력되는 방송모드에 대응되는 처리루프를 선택하여 출력하는 후처리부를 포함함을 특징으로 하는 위성 및 케이블방송용 튜너.A broadcast mode selection unit selected by a user to apply a control signal of a frequency band corresponding to a broadcast mode and a control signal of an oscillation frequency corresponding to the selected broadcast mode; A preprocessor which selects and outputs only a predetermined broadcast mode among broadcast signals received by the selection control signal of the broadcast mode selector; And a post-processing unit for selecting and outputting a processing loop corresponding to the broadcasting mode output from the pre-treatment unit. 제1항에 있어서, 상기 방송모드 선택부는 사용자에 의해 동작되어 방송모드를 선택되는 방송선국부와, 상기 방송선국부의 방송모드에 의해 주파수대역의 제어신호 및 이 방송모드에 대응되는 발진주파수를 인가하는 제1발진기를 포함함을 특징으로 하는 위성 및 케이블방송용 튜너.2. The broadcasting station selecting unit according to claim 1, wherein the broadcasting mode selecting unit is operated by a user to select a broadcasting mode, and a control signal of a frequency band and an oscillation frequency corresponding to the broadcasting mode by the broadcasting mode of the broadcasting station selecting unit. A tuner for satellite and cable broadcasting, comprising a first oscillator to be applied. 제1항에 있어서, 상기 전치리부는 방송신호를 수신하는 스위칭부와, 상기 스위칭부에서 출력되는 방송신호를 증폭하는 증폭기와, 상기 증폭기에서 출력되는 방송주파수의 소정대역만을 필터링하는 밴드패스필터와, 상기 밴드패스필터에서 필터링된 방송신호를 동조시키는 동조회로와, 상기 동조회로서 동조되어 출력되는 방송신호와 상기 제1발진기의 발진주파수를 혼합하는 제1주파수 혼합부와, 상기 제1주파수 혼합부에서 출력되는 방송신호를 주파수대역으로 필터링하는 밴드패스필터를 포함함을 특징으로 하는 위성 및 케이블방송용 튜너.2. The apparatus of claim 1, wherein the pretreatment unit comprises: a switching unit for receiving a broadcast signal, an amplifier for amplifying the broadcast signal output from the switching unit, a band pass filter for filtering only a predetermined band of the broadcast frequency output from the amplifier; And a tuning circuit for tuning the broadcast signal filtered by the band pass filter, a first frequency mixing unit for mixing the oscillation frequency of the first oscillator and the broadcast signal tuned and output as the tuning query, and the first frequency mixing. Tuner for satellite and cable broadcasting, characterized in that it comprises a band pass filter for filtering the broadcast signal output from the frequency band. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940028287A 1994-10-31 1994-10-31 Tunner of the satellite and cable broadcasting KR0134265B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940028287A KR0134265B1 (en) 1994-10-31 1994-10-31 Tunner of the satellite and cable broadcasting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940028287A KR0134265B1 (en) 1994-10-31 1994-10-31 Tunner of the satellite and cable broadcasting

Publications (2)

Publication Number Publication Date
KR960016127A true KR960016127A (en) 1996-05-22
KR0134265B1 KR0134265B1 (en) 1998-04-29

Family

ID=19396625

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940028287A KR0134265B1 (en) 1994-10-31 1994-10-31 Tunner of the satellite and cable broadcasting

Country Status (1)

Country Link
KR (1) KR0134265B1 (en)

Also Published As

Publication number Publication date
KR0134265B1 (en) 1998-04-29

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