Classifications

• • H—ELECTRICITY
  • H03—ELECTRONIC CIRCUITRY
  • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
  • H03J3/00—Continuous tuning
  • H03J3/02—Details
  • H03J3/16—Tuning without displacement of reactive element, e.g. by varying permeability
  • H03J3/18—Tuning without displacement of reactive element, e.g. by varying permeability by discharge tube or semiconductor device simulating variable reactance
  • H03J3/185—Tuning without displacement of reactive element, e.g. by varying permeability by discharge tube or semiconductor device simulating variable reactance with varactors, i.e. voltage variable reactive diodes
• • 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
• • H—ELECTRICITY
  • H03—ELECTRONIC CIRCUITRY
  • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
  • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
  • H03M1/12—Analogue/digital converters
  • H03M1/124—Sampling or signal conditioning arrangements specially adapted for A/D converters
  • H03M1/129—Means for adapting the input signal to the range the converter can handle, e.g. limiting, pre-scaling ; Out-of-range indication

Landscapes

• Engineering & Computer Science (AREA)
• Computer Hardware Design (AREA)
• Microelectronics & Electronic Packaging (AREA)
• Theoretical Computer Science (AREA)
• Analogue/Digital Conversion (AREA)
• Electronic Switches (AREA)
• Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Applications Claiming Priority (3)

Publications (3)

Family

ID=27302451

Family Applications (1)

Country Status (6)

Families Citing this family (8)

Family Cites Families (7)

• 1975
  • 1975-06-26 NL NL7507599.A patent/NL165896C/nl not_active IP Right Cessation
  • 1975-07-03 US US05/592,992 patent/US4015192A/en not_active Expired - Lifetime
  • 1975-07-04 DE DE2530033A patent/DE2530033C2/de not_active Expired
  • 1975-07-04 CA CA230,803A patent/CA1052920A/en not_active Expired
  • 1975-07-04 GB GB28291/75A patent/GB1512999A/en not_active Expired
  • 1975-07-04 FR FR7521099A patent/FR2280252A1/fr active Granted

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