JPS56169416A - Reception frequency tuning system - Google Patents

Reception frequency tuning system

Info

Publication number
JPS56169416A
JPS56169416A JP7306180A JP7306180A JPS56169416A JP S56169416 A JPS56169416 A JP S56169416A JP 7306180 A JP7306180 A JP 7306180A JP 7306180 A JP7306180 A JP 7306180A JP S56169416 A JPS56169416 A JP S56169416A
Authority
JP
Japan
Prior art keywords
key
frequency
input
circuit
tuning knob
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
JP7306180A
Other languages
Japanese (ja)
Other versions
JPS637489B2 (en
Inventor
Kenzo Okamura
Tsuneo Okubo
Etsuo Yamane
Yukio Sugimoto
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP7306180A priority Critical patent/JPS56169416A/en
Publication of JPS56169416A publication Critical patent/JPS56169416A/en
Publication of JPS637489B2 publication Critical patent/JPS637489B2/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)

Abstract

PURPOSE:To select desired frequencies with any of key input among key inputs and to accomplish fine tuning with a tuning knob, by providing a band selection key, a preset selection key, a numeric key which can input an arbitrary frequency, and a tuning knob which can select an arbitrary frequency through rotation. CONSTITUTION:A display section consist of a frequency display device 1 of dynamic display system devided into two at every display digit, a band display device 2, and a driving circuit 23 driving it. An input section comprises a plurality of band selection keys 3, a plurality of preset selection keys 5, a memory key 4 resetting the preset frequency, a numeral key 7 for frequency input, set key 6, a pulse generating circuit 21 producing pulses by the revolution of a tuning knob 8, and a pulse number counter circuit 9 which detects the direction of rotation of the tuning knob 8 and inputs two pulses from 10, 11, and a signal 12 for the direction of rotation and a pulse number signal 13 are outputted from the counter circuit 9 by a strobe signal 40. The reception section consists of a PLL circuit 14 and a radio circuit 15 and the control section consists of a control section 20 consisting of microcomputers.
JP7306180A 1980-05-30 1980-05-30 Reception frequency tuning system Granted JPS56169416A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7306180A JPS56169416A (en) 1980-05-30 1980-05-30 Reception frequency tuning system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7306180A JPS56169416A (en) 1980-05-30 1980-05-30 Reception frequency tuning system

Publications (2)

Publication Number Publication Date
JPS56169416A true JPS56169416A (en) 1981-12-26
JPS637489B2 JPS637489B2 (en) 1988-02-17

Family

ID=13507454

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7306180A Granted JPS56169416A (en) 1980-05-30 1980-05-30 Reception frequency tuning system

Country Status (1)

Country Link
JP (1) JPS56169416A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62219812A (en) * 1986-03-20 1987-09-28 Matsushita Electric Ind Co Ltd Satellite broadcast reception equipment

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03120398U (en) * 1990-03-22 1991-12-11

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51141514A (en) * 1975-05-30 1976-12-06 Sanyo Electric Co Ltd Synthesizer receiver
JPS51141511A (en) * 1975-05-31 1976-12-06 Toshiba Corp Channel selection control mode-switching device
JPS5526770A (en) * 1978-08-16 1980-02-26 Sony Corp Channel selector of synthesizer receiver

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51141514A (en) * 1975-05-30 1976-12-06 Sanyo Electric Co Ltd Synthesizer receiver
JPS51141511A (en) * 1975-05-31 1976-12-06 Toshiba Corp Channel selection control mode-switching device
JPS5526770A (en) * 1978-08-16 1980-02-26 Sony Corp Channel selector of synthesizer receiver

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62219812A (en) * 1986-03-20 1987-09-28 Matsushita Electric Ind Co Ltd Satellite broadcast reception equipment

Also Published As

Publication number Publication date
JPS637489B2 (en) 1988-02-17

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