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
  • H03J5/0272—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
• • 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

Landscapes

• Engineering & Computer Science (AREA)
• Computer Hardware Design (AREA)
• Microelectronics & Electronic Packaging (AREA)
• Superheterodyne Receivers (AREA)
• Channel Selection Circuits, Automatic Tuning Circuits (AREA)
• Television Receiver Circuits (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=27104242

Family Applications (1)

Country Status (10)

Family Cites Families (4)

• 1977
  • 1977-05-02 AU AU24761/77A patent/AU514310B2/en not_active Expired
  • 1977-05-11 GB GB19834/77A patent/GB1581933A/en not_active Expired
  • 1977-05-13 FI FI771529A patent/FI65516C/fi not_active IP Right Cessation
  • 1977-05-13 SE SE7705644A patent/SE415720B/sv not_active IP Right Cessation
  • 1977-05-18 DE DE2722659A patent/DE2722659C2/de not_active Expired
  • 1977-05-18 IT IT23730/77A patent/IT1111661B/it active
  • 1977-05-20 AT AT0364577A patent/AT381819B/de not_active IP Right Cessation
  • 1977-05-20 FR FR7715582A patent/FR2361789A1/fr active Granted
  • 1977-05-21 JP JP52059272A patent/JPS5928297B2/ja not_active Expired
• 1986
  • 1986-05-15 HK HK333/86A patent/HK33386A/en unknown

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