ZA791982B - Frequency selector tuning means - Google Patents

Frequency selector tuning means

Info

Publication number
ZA791982B
ZA791982B ZA791982A ZA791982A ZA791982B ZA 791982 B ZA791982 B ZA 791982B ZA 791982 A ZA791982 A ZA 791982A ZA 791982 A ZA791982 A ZA 791982A ZA 791982 B ZA791982 B ZA 791982B
Authority
ZA
South Africa
Prior art keywords
tuning means
frequency selector
selector tuning
frequency
tuning
Prior art date
Application number
ZA791982A
Inventor
S Swift
W Cox
Original Assignee
W Cox
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 W Cox filed Critical W Cox
Publication of ZA791982B publication Critical patent/ZA791982B/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/02—Automatic frequency control
    • H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
    • H03J7/06—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant using counters or frequency dividers
    • H03J7/065—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant using counters or frequency dividers the counter or frequency divider being used in a phase locked loop
    • 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)
ZA791982A 1978-05-19 1979-04-25 Frequency selector tuning means ZA791982B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPD444178 1978-05-19
AUPD599778 1978-09-18

Publications (1)

Publication Number Publication Date
ZA791982B true ZA791982B (en) 1980-04-30

Family

ID=25642223

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA791982A ZA791982B (en) 1978-05-19 1979-04-25 Frequency selector tuning means

Country Status (6)

Country Link
JP (1) JPS556994A (en)
AU (1) AU4646579A (en)
DE (1) DE2918503A1 (en)
FR (1) FR2426362A1 (en)
GB (1) GB2021887A (en)
ZA (1) ZA791982B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS593891B2 (en) * 1979-01-17 1984-01-26 ソニー株式会社 Reception detection circuit
JPS5885623A (en) * 1981-11-18 1983-05-23 Pioneer Electronic Corp Tuning method of amplitude modulation receiver
DE3319250A1 (en) * 1983-05-27 1984-11-29 Telefunken Fernseh Und Rundfunk Gmbh, 3000 Hannover Receiver with automatic location finding
US4737993A (en) * 1987-01-21 1988-04-12 Rca Corporation Cable broadcast TV receiver with automatic channel search responsive to mode change
JP2625759B2 (en) * 1987-09-22 1997-07-02 ソニー株式会社 Auto tuning device
US5023938A (en) * 1988-06-03 1991-06-11 Pioneer Electronic Corporation Station selecting device in tuner for automatic selection according to input information
US4914517A (en) * 1989-04-06 1990-04-03 Thomson Consumer Electronics, Inc. Tuner control apparatus having tune-by-label capability and using alphabetical label storage
DE3913278A1 (en) * 1989-04-22 1990-10-25 Thomson Brandt Gmbh BROADCAST RECEIVER WITH DIGITAL FREQUENCY ENTRY
US5045947A (en) * 1989-05-31 1991-09-03 Jack Beery Television receiver having memory control for tune-by-label feature
US5963269A (en) * 1995-06-07 1999-10-05 Beery; Jack Apparatus for controlling a television receiver using a plurality of stored labels

Also Published As

Publication number Publication date
GB2021887A (en) 1979-12-05
AU4646579A (en) 1979-11-22
FR2426362A1 (en) 1979-12-14
JPS556994A (en) 1980-01-18
DE2918503A1 (en) 1979-11-29

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