JPS5720017A - Receiver - Google Patents

Receiver

Info

Publication number
JPS5720017A
JPS5720017A JP9468180A JP9468180A JPS5720017A JP S5720017 A JPS5720017 A JP S5720017A JP 9468180 A JP9468180 A JP 9468180A JP 9468180 A JP9468180 A JP 9468180A JP S5720017 A JPS5720017 A JP S5720017A
Authority
JP
Japan
Prior art keywords
output
pulses
memory
counter
switch
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
JP9468180A
Other languages
Japanese (ja)
Inventor
Toshiki Murakami
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 JP9468180A priority Critical patent/JPS5720017A/en
Publication of JPS5720017A publication Critical patent/JPS5720017A/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)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Abstract

PURPOSE:To receivr waves from many broadcast stations by using a small number of memories by adding or subtracting frequency data, equivalent to channel space, to and from frequency data stored in memories. CONSTITUTION:When a channel switch 6 is pushed while an addition and subtraction switch 11 is at an addition position, data in a memory 16 is preset in an up-down counter 13 and the output of the switch 6 is applied to a monostable multivibrator 18, which outputs a pulse. As a result, a counter 19, while the output pulse of the monostable multivibrator 18 is at a high level, counts pulses from a reference oscillator 12 to output its count value to an AND gate 20. For example, when the output pulse width of the multivibrator 18 is set equivalent to three output pulses of the oscillator 12, a counter 13 inputs data, read out of the memory 16, as a preset value and further counts three sweep pulses up. Therefore, a signal having a frequency three pulses higher than that stored in the memory 16 is receivable.
JP9468180A 1980-07-10 1980-07-10 Receiver Pending JPS5720017A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9468180A JPS5720017A (en) 1980-07-10 1980-07-10 Receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9468180A JPS5720017A (en) 1980-07-10 1980-07-10 Receiver

Publications (1)

Publication Number Publication Date
JPS5720017A true JPS5720017A (en) 1982-02-02

Family

ID=14116947

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9468180A Pending JPS5720017A (en) 1980-07-10 1980-07-10 Receiver

Country Status (1)

Country Link
JP (1) JPS5720017A (en)

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