FI790564A - REGLERSYSTEM FOER FREKVENSSYNTETISERING VID KOMMUNIKATIONSANORDNINGAR - Google Patents

REGLERSYSTEM FOER FREKVENSSYNTETISERING VID KOMMUNIKATIONSANORDNINGAR

Info

Publication number
FI790564A
FI790564A FI790564A FI790564A FI790564A FI 790564 A FI790564 A FI 790564A FI 790564 A FI790564 A FI 790564A FI 790564 A FI790564 A FI 790564A FI 790564 A FI790564 A FI 790564A
Authority
FI
Finland
Prior art keywords
reglersystem
kommunikationsanordningar
frekvenssyntetisering
vid
foer
Prior art date
Application number
FI790564A
Other languages
Finnish (fi)
Inventor
Martin Andrew Fryer
Tapan Kumar Das
Colin Smith
Original Assignee
Plessey Handel Investment Ag
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 Plessey Handel Investment Ag filed Critical Plessey Handel Investment Ag
Publication of FI790564A publication Critical patent/FI790564A/en

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03LAUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00Automatic control of frequency or phase; Synchronisation
    • H03L7/06Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/16Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
    • H03L7/18Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
    • H03L7/183Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between fixed numbers or the frequency divider dividing by a fixed number
    • H03L7/193Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between fixed numbers or the frequency divider dividing by a fixed number the frequency divider/counter comprising a commutable pre-divider, e.g. a two modulus divider
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03JTUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J5/00Discontinuous 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
    • H03J5/02Discontinuous 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
    • H03J5/0245Discontinuous 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
    • H03J5/0272Discontinuous 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
    • H03J5/0281Discontinuous 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
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03JTUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/02Automatic frequency control
    • H03J7/04Automatic 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
    • H03J7/06Automatic 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
    • H03J7/065Automatic 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Superheterodyne Receivers (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Circuits Of Receivers In General (AREA)
FI790564A 1978-02-22 1979-02-20 REGLERSYSTEM FOER FREKVENSSYNTETISERING VID KOMMUNIKATIONSANORDNINGAR FI790564A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB714078 1978-02-22

Publications (1)

Publication Number Publication Date
FI790564A true FI790564A (en) 1979-08-23

Family

ID=9827385

Family Applications (1)

Application Number Title Priority Date Filing Date
FI790564A FI790564A (en) 1978-02-22 1979-02-20 REGLERSYSTEM FOER FREKVENSSYNTETISERING VID KOMMUNIKATIONSANORDNINGAR

Country Status (10)

Country Link
JP (1) JPS54125910A (en)
AR (1) AR224730A1 (en)
BE (1) BE874367A (en)
BR (1) BR7901178A (en)
DE (1) DE2906059A1 (en)
ES (1) ES477973A1 (en)
FI (1) FI790564A (en)
FR (1) FR2418592A1 (en)
IT (1) IT1193179B (en)
NL (1) NL7901412A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3627768A1 (en) * 1986-08-16 1988-02-18 Standard Elektrik Lorenz Ag Device for selecting certain receiving channels in a receiving device of entertainment electronics which can be tuned to receiving channels
DE3634246A1 (en) * 1986-10-08 1988-04-21 Grundig Emv Tuning system, particularly for video generators and television receivers
DE3830921A1 (en) * 1988-09-12 1990-03-22 Grundig Emv Arrangement for adapting a receiving device to various channel spacings

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1047373B (en) * 1975-10-16 1980-09-10 Indesit ARRANGEMENT FOR SELECTING A RECEIVABLE FREQUENCY IN A SIGNAL RECEIVER

Also Published As

Publication number Publication date
IT1193179B (en) 1988-06-02
FR2418592B1 (en) 1985-02-15
IT7920399A0 (en) 1979-02-21
NL7901412A (en) 1979-08-24
AR224730A1 (en) 1982-01-15
BR7901178A (en) 1979-10-09
DE2906059A1 (en) 1979-08-30
ES477973A1 (en) 1979-10-16
FR2418592A1 (en) 1979-09-21
BE874367A (en) 1979-06-18
JPS54125910A (en) 1979-09-29

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