JPS56125121A - Tuner for digital receiver - Google Patents

Tuner for digital receiver

Info

Publication number
JPS56125121A
JPS56125121A JP13426880A JP13426880A JPS56125121A JP S56125121 A JPS56125121 A JP S56125121A JP 13426880 A JP13426880 A JP 13426880A JP 13426880 A JP13426880 A JP 13426880A JP S56125121 A JPS56125121 A JP S56125121A
Authority
JP
Japan
Prior art keywords
input
ratchet
frequency
counter
moving contact
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
JP13426880A
Other languages
Japanese (ja)
Inventor
Hiromi Kusakabe
Hirotake Hagiwara
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP13426880A priority Critical patent/JPS56125121A/en
Publication of JPS56125121A publication Critical patent/JPS56125121A/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

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 enable adjustment with a simple constitution, by producing the input to the counter determining the frequency-dividing ratio with the rotation of a dial, in a digital receiver in which the turning frequency is decided with a programmable frequncy devider. CONSTITUTION:The frequency dividing ratio of a programmable frequency divider 15 is decided with the value N of a counter 16, which is determined with pulse input and the pulse is outputted from terminals T1, T2. A ratchet 23 is inserted coaxially to the rear side of an axis 22 of a dial 21 and a number of pawls 231 in triangle shape are formed around the ratchet, and a switch 24 is provided so that the pawls 231 of the ratchet 23 are in contact with the moving contact 241. The switch 24 has fixed contacts 242, 243 at the both sides of the moving contact. For example, a DC power supply 25 is connected to the moving contact 241 and the fixed contacts 242, 243 are connected to the up input 161 or down input 162 of the counter 16 as the 1st and 2nd output terminals T1 and T2.
JP13426880A 1980-09-29 1980-09-29 Tuner for digital receiver Pending JPS56125121A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13426880A JPS56125121A (en) 1980-09-29 1980-09-29 Tuner for digital receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13426880A JPS56125121A (en) 1980-09-29 1980-09-29 Tuner for digital receiver

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP9820772A Division JPS5428689B2 (en) 1972-09-30 1972-09-30

Publications (1)

Publication Number Publication Date
JPS56125121A true JPS56125121A (en) 1981-10-01

Family

ID=15124314

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13426880A Pending JPS56125121A (en) 1980-09-29 1980-09-29 Tuner for digital receiver

Country Status (1)

Country Link
JP (1) JPS56125121A (en)

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