JPS52100910A - Channel selection unit - Google Patents

Channel selection unit

Info

Publication number
JPS52100910A
JPS52100910A JP2779077A JP2779077A JPS52100910A JP S52100910 A JPS52100910 A JP S52100910A JP 2779077 A JP2779077 A JP 2779077A JP 2779077 A JP2779077 A JP 2779077A JP S52100910 A JPS52100910 A JP S52100910A
Authority
JP
Japan
Prior art keywords
channel selection
selection unit
channel
memorizing
digitally
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
JP2779077A
Other languages
Japanese (ja)
Other versions
JPS5335404B2 (en
Inventor
Takeo Fukuda
Kenichi Torii
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 JP2779077A priority Critical patent/JPS52100910A/en
Publication of JPS52100910A publication Critical patent/JPS52100910A/en
Publication of JPS5335404B2 publication Critical patent/JPS5335404B2/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
    • H03J5/0254—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 transfered to a D/A converter
    • H03J5/0263—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 transfered to a D/A converter 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 eliminate the tuning discrepancy due to temperature fluctuations, etc. and thus to realize IC formation with low cost by memorizing digitally the channel selection voltage level corresponding to each channel.
JP2779077A 1977-03-14 1977-03-14 Channel selection unit Granted JPS52100910A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2779077A JPS52100910A (en) 1977-03-14 1977-03-14 Channel selection unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2779077A JPS52100910A (en) 1977-03-14 1977-03-14 Channel selection unit

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP47114117A Division JPS5237886B2 (en) 1972-11-14 1972-11-14

Publications (2)

Publication Number Publication Date
JPS52100910A true JPS52100910A (en) 1977-08-24
JPS5335404B2 JPS5335404B2 (en) 1978-09-27

Family

ID=12230758

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2779077A Granted JPS52100910A (en) 1977-03-14 1977-03-14 Channel selection unit

Country Status (1)

Country Link
JP (1) JPS52100910A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6365710A (en) * 1986-09-06 1988-03-24 Fujitsu Ten Ltd Pll synthesizer with frequency setting function

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4526115Y1 (en) * 1969-07-01 1970-10-12
JPS4964302A (en) * 1972-10-20 1974-06-21

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4526115Y1 (en) * 1969-07-01 1970-10-12
JPS4964302A (en) * 1972-10-20 1974-06-21

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6365710A (en) * 1986-09-06 1988-03-24 Fujitsu Ten Ltd Pll synthesizer with frequency setting function

Also Published As

Publication number Publication date
JPS5335404B2 (en) 1978-09-27

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