JPS5295909A - Frequency setting device of synthesizor tuner - Google Patents

Frequency setting device of synthesizor tuner

Info

Publication number
JPS5295909A
JPS5295909A JP1225676A JP1225676A JPS5295909A JP S5295909 A JPS5295909 A JP S5295909A JP 1225676 A JP1225676 A JP 1225676A JP 1225676 A JP1225676 A JP 1225676A JP S5295909 A JPS5295909 A JP S5295909A
Authority
JP
Japan
Prior art keywords
frequency setting
synthesizor
tuner
setting device
thespecific
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.)
Pending
Application number
JP1225676A
Other languages
Japanese (ja)
Inventor
Hideo Nishijima
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP1225676A priority Critical patent/JPS5295909A/en
Publication of JPS5295909A publication Critical patent/JPS5295909A/en
Pending 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
    • H03J5/0281—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 the digital values being held in an auxiliary non erasable memory

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Superheterodyne Receivers (AREA)

Abstract

PURPOSE:Providing the parallel input switch for each shift register enables accurate frequency setting and facilitates writing into thespecific memory element of corresponding frequency.
JP1225676A 1976-02-09 1976-02-09 Frequency setting device of synthesizor tuner Pending JPS5295909A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1225676A JPS5295909A (en) 1976-02-09 1976-02-09 Frequency setting device of synthesizor tuner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1225676A JPS5295909A (en) 1976-02-09 1976-02-09 Frequency setting device of synthesizor tuner

Publications (1)

Publication Number Publication Date
JPS5295909A true JPS5295909A (en) 1977-08-12

Family

ID=11800276

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1225676A Pending JPS5295909A (en) 1976-02-09 1976-02-09 Frequency setting device of synthesizor tuner

Country Status (1)

Country Link
JP (1) JPS5295909A (en)

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