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
  • H03J7/08—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 varactors, i.e. voltage variable reactive diodes
  • H03J7/10—Modification of automatic frequency control sensitivity or linearising automatic frequency control operation
• • 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
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
  • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
  • H04N21/41—Structure of client; Structure of client peripherals
  • H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
  • H04N21/42204—User interfaces specially adapted for controlling a client device through a remote control device; Remote control devices therefor
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
  • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
  • H04N21/47—End-user applications
• • H—ELECTRICITY
  • H03—ELECTRONIC CIRCUITRY
  • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
  • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
  • H03M1/66—Digital/analogue converters
  • H03M1/74—Simultaneous conversion

Landscapes

• Engineering & Computer Science (AREA)
• Multimedia (AREA)
• Signal Processing (AREA)
• Computer Hardware Design (AREA)
• Microelectronics & Electronic Packaging (AREA)
• Human Computer Interaction (AREA)
• Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=23724000

Family Applications (1)

Country Status (10)

Families Citing this family (10)

Family Cites Families (3)

• 1974
  • 1974-01-18 US US434383A patent/US3906351A/en not_active Expired - Lifetime
  • 1974-12-03 NL NL7415725A patent/NL7415725A/xx not_active Application Discontinuation
  • 1974-12-05 CA CA215,328A patent/CA1039870A/fr not_active Expired
  • 1974-12-06 DE DE19742457898 patent/DE2457898A1/de not_active Ceased
  • 1974-12-09 IT IT30313/74A patent/IT1026883B/it active
• 1975
  • 1975-01-07 FR FR7500341A patent/FR2258741B1/fr not_active Expired
  • 1975-01-13 GB GB1356/75A patent/GB1488192A/en not_active Expired
  • 1975-01-16 JP JP50007665A patent/JPS50105022A/ja active Pending
  • 1975-01-17 ES ES433907A patent/ES433907A1/es not_active Expired
  • 1975-01-17 BE BE152483A patent/BE824511A/fr not_active IP Right Cessation

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