JPS546410A - Channel selector - Google Patents

Channel selector

Info

Publication number
JPS546410A
JPS546410A JP7112477A JP7112477A JPS546410A JP S546410 A JPS546410 A JP S546410A JP 7112477 A JP7112477 A JP 7112477A JP 7112477 A JP7112477 A JP 7112477A JP S546410 A JPS546410 A JP S546410A
Authority
JP
Japan
Prior art keywords
channel selector
simplification
transceiver
counter
improvement
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
JP7112477A
Other languages
Japanese (ja)
Inventor
Toshio Tanizoe
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 JP7112477A priority Critical patent/JPS546410A/en
Publication of JPS546410A publication Critical patent/JPS546410A/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)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Transceivers (AREA)

Abstract

PURPOSE:To realize the improvement of operations and the simplification of a circuit constitution, by controlling two operation switches, a memory unit, and counter in a transceiver.
JP7112477A 1977-06-17 1977-06-17 Channel selector Pending JPS546410A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7112477A JPS546410A (en) 1977-06-17 1977-06-17 Channel selector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7112477A JPS546410A (en) 1977-06-17 1977-06-17 Channel selector

Publications (1)

Publication Number Publication Date
JPS546410A true JPS546410A (en) 1979-01-18

Family

ID=13451495

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7112477A Pending JPS546410A (en) 1977-06-17 1977-06-17 Channel selector

Country Status (1)

Country Link
JP (1) JPS546410A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59171436U (en) * 1983-04-30 1984-11-16 カシオ計算機株式会社 variable frequency generator
JPH02276313A (en) * 1990-02-14 1990-11-13 Casio Comput Co Ltd Variable data generator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59171436U (en) * 1983-04-30 1984-11-16 カシオ計算機株式会社 variable frequency generator
JPH02276313A (en) * 1990-02-14 1990-11-13 Casio Comput Co Ltd Variable data generator

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