JPS54102813A - Synthesizer receiver - Google Patents

Synthesizer receiver

Info

Publication number
JPS54102813A
JPS54102813A JP913678A JP913678A JPS54102813A JP S54102813 A JPS54102813 A JP S54102813A JP 913678 A JP913678 A JP 913678A JP 913678 A JP913678 A JP 913678A JP S54102813 A JPS54102813 A JP S54102813A
Authority
JP
Japan
Prior art keywords
frequency
output
oscillator
reception
reception frequency
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
JP913678A
Other languages
Japanese (ja)
Other versions
JPS624897B2 (en
Inventor
Noboru Someno
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 JP913678A priority Critical patent/JPS54102813A/en
Publication of JPS54102813A publication Critical patent/JPS54102813A/en
Publication of JPS624897B2 publication Critical patent/JPS624897B2/ja
Granted legal-status Critical Current

Links

Classifications

    • 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)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Superheterodyne Receivers (AREA)

Abstract

PURPOSE:To make it possible to select a channel by setting easily the dividing ratio of the programmable divider of a PLL frequency synthesizer, by providing a frequency counter counting a reception frequency and a display unit diaplaying the reception frequency by the output of the counter. CONSTITUTION:The PLL frequency synthesizer 20 is equipped with reference frequency signal generating method 22, programmable divider 10, phase comparator 13, and method 94 feeding the output of comparator 13 back to the 2nd oscillation frequency variable element of local oscillator 8. In addition, frequency counters 40 to 42, and 44 to 46 are also provided which receive selectively the output of the 2nd frequency converting mixer 16 and that of fine-adjusting oscillator 25. Then, the output signal of mixer 16 is supplied to upper parts 44 to 46 of counters at the 1st channel selection time through the operation of the 1st oscillation frequency variable element of oscillator 8 in order to determine the dividing ratio of divider depending upon upper digits of the reception frequency, and also to supply outputs of upper parts 44 to 46, to display unit 55, thereby displaying upper digits of the reception frequency.
JP913678A 1978-01-30 1978-01-30 Synthesizer receiver Granted JPS54102813A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP913678A JPS54102813A (en) 1978-01-30 1978-01-30 Synthesizer receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP913678A JPS54102813A (en) 1978-01-30 1978-01-30 Synthesizer receiver

Publications (2)

Publication Number Publication Date
JPS54102813A true JPS54102813A (en) 1979-08-13
JPS624897B2 JPS624897B2 (en) 1987-02-02

Family

ID=11712202

Family Applications (1)

Application Number Title Priority Date Filing Date
JP913678A Granted JPS54102813A (en) 1978-01-30 1978-01-30 Synthesizer receiver

Country Status (1)

Country Link
JP (1) JPS54102813A (en)

Also Published As

Publication number Publication date
JPS624897B2 (en) 1987-02-02

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