JPS5632820A - Tuning system of tuner - Google Patents

Tuning system of tuner

Info

Publication number
JPS5632820A
JPS5632820A JP10864579A JP10864579A JPS5632820A JP S5632820 A JPS5632820 A JP S5632820A JP 10864579 A JP10864579 A JP 10864579A JP 10864579 A JP10864579 A JP 10864579A JP S5632820 A JPS5632820 A JP S5632820A
Authority
JP
Japan
Prior art keywords
tuning
converters
channel
tuner
tuning system
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
JP10864579A
Other languages
Japanese (ja)
Inventor
Tetsushi Yamoto
Masayoshi Nawa
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.)
Mitsumi Electric Co Ltd
Original Assignee
Mitsumi 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 Mitsumi Electric Co Ltd filed Critical Mitsumi Electric Co Ltd
Priority to JP10864579A priority Critical patent/JPS5632820A/en
Publication of JPS5632820A publication Critical patent/JPS5632820A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H03J3/28—Continuous tuning of more than one resonant circuit simultaneously, the tuning frequencies of the circuits having a substantially constant difference throughout the tuning range
    • H03J3/32—Arrangements for ensuring tracking with variable capacitors

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)

Abstract

PURPOSE:To lessen a tracking error by providing each tuning circuit with a control signal generating circuit and by attaining tuning by sepatately driving tuning circuits. CONSTITUTION:As an address assignment signal that corresponds to a desired reception channel is applied to nonvolatile memory element 13 from channel selection part 12, a previously stored digital signal is read out and applied to DA converters 14a-14b simultaneously. Outputs of DA converters 14a-14d are applied to varactor diodes in tuning circuits 11a-11d by way of resistances 15a-15d, thereby receiving a desired channel broadcast.
JP10864579A 1979-08-28 1979-08-28 Tuning system of tuner Pending JPS5632820A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10864579A JPS5632820A (en) 1979-08-28 1979-08-28 Tuning system of tuner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10864579A JPS5632820A (en) 1979-08-28 1979-08-28 Tuning system of tuner

Publications (1)

Publication Number Publication Date
JPS5632820A true JPS5632820A (en) 1981-04-02

Family

ID=14490047

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10864579A Pending JPS5632820A (en) 1979-08-28 1979-08-28 Tuning system of tuner

Country Status (1)

Country Link
JP (1) JPS5632820A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2513055A1 (en) * 1981-09-16 1983-03-18 Rca Corp Television tuning system with electronic trimming - has altering signals stored in memory and applied to respective filters and tuning oscillator
JPS6157627U (en) * 1984-09-13 1986-04-18
JPS62198211A (en) * 1986-02-26 1987-09-01 Matsushita Electric Ind Co Ltd Semiconductor integrated circuit
JPS6447120U (en) * 1988-09-12 1989-03-23
JPH02121516A (en) * 1988-10-31 1990-05-09 Nec Corp Antenna tuning control circuit

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2513055A1 (en) * 1981-09-16 1983-03-18 Rca Corp Television tuning system with electronic trimming - has altering signals stored in memory and applied to respective filters and tuning oscillator
JPS6157627U (en) * 1984-09-13 1986-04-18
JPS62198211A (en) * 1986-02-26 1987-09-01 Matsushita Electric Ind Co Ltd Semiconductor integrated circuit
JPS6447120U (en) * 1988-09-12 1989-03-23
JPH02121516A (en) * 1988-10-31 1990-05-09 Nec Corp Antenna tuning control circuit

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