JPS561629A - Receiver - Google Patents

Receiver

Info

Publication number
JPS561629A
JPS561629A JP7706879A JP7706879A JPS561629A JP S561629 A JPS561629 A JP S561629A JP 7706879 A JP7706879 A JP 7706879A JP 7706879 A JP7706879 A JP 7706879A JP S561629 A JPS561629 A JP S561629A
Authority
JP
Japan
Prior art keywords
oscillator
synthesizer
frequency
oscillation frequency
voltage control
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
JP7706879A
Other languages
Japanese (ja)
Other versions
JPS6036658B2 (en
Inventor
Norio Numata
Satoshi Yokoya
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP7706879A priority Critical patent/JPS6036658B2/en
Publication of JPS561629A publication Critical patent/JPS561629A/en
Publication of JPS6036658B2 publication Critical patent/JPS6036658B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H40/00—Arrangements specially adapted for receiving broadcast information
    • H04H40/18—Arrangements characterised by circuits or components specially adapted for receiving
    • H04H40/27—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95
    • H04H40/36—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95 specially adapted for stereophonic broadcast receiving
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
    • H03J5/02—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings
    • H03J5/0245—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form
    • H03J5/0272—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form the digital values being used to preset a counter or a frequency divider in a phase locked loop, e.g. frequency synthesizer

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Superheterodyne Receivers (AREA)
  • Circuits Of Receivers In General (AREA)
  • Stereo-Broadcasting Methods (AREA)

Abstract

PURPOSE:To increase the variation range of the oscillation frequency for the voltage control oscillator and thus reduce the effect of temperature change, by constituting the local oscillation circuit with the frequency synthesizer and at the same time sharing the reference oscillator of the synthesizer and the voltage control oscillator of PLL. CONSTITUTION:The local oscillation circuit consists of frequency synthesizer 40, and an integer multiplication is given to the reference oscillation frequency of synthesizer 40 to IF. At the same time, both the reference oscillator of synthesizer 40 and voltage control oscillator 71 of PLL70 are shared each other in order to form a closed loop of oscillator 71 - synthesizer 40 - mixer 30 - IF amplifier 50 - phase comparator 73 - LPF75 - oscillator 71. As a result, the correction is secured in case the oscillation frequency of oscillator 71 has some shift to the central frequency. And PLL70 is locked when the oscillation frequency of oscillator 71 becomes equal to the central frequency along with the normal IF secured. In this way, the variation range can be increased for the oscillation frequency of oscillator 71, accordingly reducing the effect of the temperature change.
JP7706879A 1979-06-19 1979-06-19 Receiving machine Expired JPS6036658B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7706879A JPS6036658B2 (en) 1979-06-19 1979-06-19 Receiving machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7706879A JPS6036658B2 (en) 1979-06-19 1979-06-19 Receiving machine

Publications (2)

Publication Number Publication Date
JPS561629A true JPS561629A (en) 1981-01-09
JPS6036658B2 JPS6036658B2 (en) 1985-08-21

Family

ID=13623474

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7706879A Expired JPS6036658B2 (en) 1979-06-19 1979-06-19 Receiving machine

Country Status (1)

Country Link
JP (1) JPS6036658B2 (en)

Also Published As

Publication number Publication date
JPS6036658B2 (en) 1985-08-21

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