MY130945A - Radio-frequency apparatus having radio-frequency modulator and television tuner - Google Patents

Radio-frequency apparatus having radio-frequency modulator and television tuner

Info

Publication number
MY130945A
MY130945A MYPI97002964A MYPI9702964A MY130945A MY 130945 A MY130945 A MY 130945A MY PI97002964 A MYPI97002964 A MY PI97002964A MY PI9702964 A MYPI9702964 A MY PI9702964A MY 130945 A MY130945 A MY 130945A
Authority
MY
Malaysia
Prior art keywords
radio
television tuner
frequency
reference oscillator
modulator
Prior art date
Application number
MYPI97002964A
Inventor
Masahiko Saito
Original Assignee
Alps Electric Co Ltd
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 Alps Electric Co Ltd filed Critical Alps Electric Co Ltd
Publication of MY130945A publication Critical patent/MY130945A/en

Links

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
    • H04N5/4446—IF amplifier circuits specially adapted for B&W TV
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/26—Circuits for superheterodyne receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/765—Interface circuits between an apparatus for recording and another apparatus
    • H04N5/775—Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/765—Interface circuits between an apparatus for recording and another apparatus
    • H04N5/775—Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television receiver
    • H04N5/7755—Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television receiver the recorder being connected to, or coupled with, the antenna of the television receiver
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/30—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Noise Elimination (AREA)
  • Transmitters (AREA)
  • Superheterodyne Receivers (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)

Abstract

A RADIO-FREQUENCY APPARATUS HAVING A RADIO-FREQUENCY MODULATOR (1) AND A TELEVISION TUNER (2) IS DESIGNED SO AS TO REDUCE THE MANUFACTURING COST BY REDUCING THE NUMBER OF CRYSTAL RESONATORS AND SO AS TO PREVENT BEAT INTERFERENCE. A RADIO-FREQUENCY MODULATOR AND A TELEVISION TUNER ARE PROVIDED IN A SHIELD CASE (34) WHILE BEING SEPARATED FROM EACH OTHER BY A SHIELD PLATE (35). ONE CRYSTAL RESONATOR (13) IS USED IN COMMON FOR A FIRST REFERENCE OSCILLATOR (14) OF THE RADIO-FREQUENCY MODULATOR AND A SECOND REFERENCE OSCILLATOR (24) OF THE TELEVISION TUNER TO SET A RESONANT FREQUENCY OF EACH OF THE FIRST AND SECOND REFERENCE OSCILLATORS. ON A PRINTED CIRCUIT BOARD ON WHICH THE RADIOFREQUENCY MODULATOR (1) AND THE TELEVISION TUNER (2) ARE PROVIDED, A LOWPASS FILTER (25) IS DISPOSED ON THE TELEVISION TUNER SIDE AND IN THE VICINITY OF THE SHIELD PLATE (35) WHILE THE CRYSTAL RESONATOR (13) IS DISPOSED ON THE RADIO- FREQUENCY MODULATOR SIDE AND IN THE VICINITY OF THE FIRST REFERENCE OSCILLATOR (14).THE CRYSTAL RESONATOR (13) IS CONNECTED TO THE FIRST REFERENCE OSCILLATOR (14) AND IS ALSO CONNECTED TO THE SECOND REFERENCE OSCILLATOR (24) VIA THE LOWPASS FILTER (25).(FIG 1)
MYPI97002964A 1996-07-01 1997-06-30 Radio-frequency apparatus having radio-frequency modulator and television tuner MY130945A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8171166A JPH1022857A (en) 1996-07-01 1996-07-01 Video equipment, incorporating rf modulator and tv tuner

Publications (1)

Publication Number Publication Date
MY130945A true MY130945A (en) 2007-07-31

Family

ID=15918228

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI97002964A MY130945A (en) 1996-07-01 1997-06-30 Radio-frequency apparatus having radio-frequency modulator and television tuner

Country Status (6)

Country Link
JP (1) JPH1022857A (en)
KR (1) KR100240306B1 (en)
CN (1) CN1077759C (en)
DE (1) DE19727718B4 (en)
GB (1) GB2314983B (en)
MY (1) MY130945A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3599948B2 (en) * 1997-04-14 2004-12-08 アルプス電気株式会社 TV tuner with built-in RF modulator
JP3471607B2 (en) 1998-04-24 2003-12-02 日本電気株式会社 Pseudo earthing method and apparatus
GB9905836D0 (en) * 1999-03-15 1999-05-05 Pace Micro Tech Ltd Amplitude control for tv broadcast systems
EP1049260A3 (en) * 1999-04-26 2003-07-30 Microtune GmbH & Co KG RF unit with tuner and RF transmitter-receiver
JP3100214U (en) * 2003-09-03 2004-05-13 アルプス電気株式会社 Television tuner
JP4611902B2 (en) * 2006-01-17 2011-01-12 アルプス電気株式会社 Diversity reception tuner
KR101372044B1 (en) * 2007-10-30 2014-03-07 엘지전자 주식회사 Radio Frequency switch built-in type tuner
CN101640369B (en) * 2009-08-25 2011-05-25 深圳市大族激光科技股份有限公司 Radio-frequency (RF) power supply device
CN103607548B (en) * 2013-11-13 2017-08-04 四川福润得数码科技有限责任公司 A kind of AV modulation output tuning receives integrated module

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3716333A1 (en) * 1987-05-15 1988-11-24 Grundig Emv VIDEO RECORDER WITH DYNAMICALLY COMPATIBLE TUNER
JP3055399B2 (en) * 1994-07-27 2000-06-26 松下電器産業株式会社 High frequency signal processing unit

Also Published As

Publication number Publication date
DE19727718B4 (en) 2004-09-02
JPH1022857A (en) 1998-01-23
GB2314983A (en) 1998-01-14
KR980012979A (en) 1998-04-30
DE19727718A1 (en) 1998-01-08
GB2314983B (en) 2000-09-20
CN1177255A (en) 1998-03-25
CN1077759C (en) 2002-01-09
KR100240306B1 (en) 2000-01-15
GB9712918D0 (en) 1997-08-20

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