JPS56160131A - Channel selecting device - Google Patents

Channel selecting device

Info

Publication number
JPS56160131A
JPS56160131A JP6376380A JP6376380A JPS56160131A JP S56160131 A JPS56160131 A JP S56160131A JP 6376380 A JP6376380 A JP 6376380A JP 6376380 A JP6376380 A JP 6376380A JP S56160131 A JPS56160131 A JP S56160131A
Authority
JP
Japan
Prior art keywords
regulated
series
band
resistor
parallel
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
JP6376380A
Other languages
Japanese (ja)
Inventor
Koji Terami
Isao Fujimoto
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo 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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP6376380A priority Critical patent/JPS56160131A/en
Priority to CA000372665A priority patent/CA1158373A/en
Priority to US06/242,229 priority patent/US4363136A/en
Priority to DE8181301154T priority patent/DE3165166D1/en
Priority to EP81301154A priority patent/EP0036335B1/en
Publication of JPS56160131A publication Critical patent/JPS56160131A/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
    • H03J5/24—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 a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection
    • H03J5/242—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 a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection used exclusively for band selection
    • H03J5/244—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 a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection used exclusively for band selection using electronic means

Landscapes

  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Abstract

PURPOSE:To realize a control for the receivable frequency range at a channel selection part only, by connecting resistors in series and parallel to a variable resistor for channel presetting in linkage with a band switching action and then limiting the upper and lower limits of the tuning voltage variable range. CONSTITUTION:For a preset part 6, a semifixed resistors 63 and 65 can be connected in parallel and series to a conventional variable resistor 62 in linkage with a band switching action. As a result, a parallel connection is secured for the resistances having the set values although the resistor 62 is turned up to its full upper limit in case the band with which the upper limit frequency must be regulated is received. Furthermore the pulse duration of an output pulse signal is reduced down to a level lower than a certain value. In case the band with which the lower limit frequency must be regulated is received, the resistor 63 is connected in series to the registor 62. Thus resistance value, i.e., the pulse duration of the output pulse signal is never set at zero, and accordingly the upper and lower limits are regulated for the tuning voltage which is applied to a tuner.
JP6376380A 1980-03-19 1980-05-13 Channel selecting device Pending JPS56160131A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP6376380A JPS56160131A (en) 1980-05-13 1980-05-13 Channel selecting device
CA000372665A CA1158373A (en) 1980-03-19 1981-03-10 Station selecting apparatus
US06/242,229 US4363136A (en) 1980-03-19 1981-03-10 Station selecting apparatus
DE8181301154T DE3165166D1 (en) 1980-03-19 1981-03-18 Station selecting apparatus
EP81301154A EP0036335B1 (en) 1980-03-19 1981-03-18 Station selecting apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6376380A JPS56160131A (en) 1980-05-13 1980-05-13 Channel selecting device

Publications (1)

Publication Number Publication Date
JPS56160131A true JPS56160131A (en) 1981-12-09

Family

ID=13238740

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6376380A Pending JPS56160131A (en) 1980-03-19 1980-05-13 Channel selecting device

Country Status (1)

Country Link
JP (1) JPS56160131A (en)

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