Nothing Special   »   [go: up one dir, main page]

Jurgen, 1978 - Google Patents

Automotive electronics: Tuneup for Detroit: New auto radios are rolling along in GM, Ford, and Chrysler products as electronics replaces mechanical tuners

Jurgen, 1978

Document ID
6871858897851079797
Author
Jurgen R
Publication year
Publication venue
IEEE spectrum

External Links

Snippet

Frequency-synthesized AM/FM electronic tuning is the latest word in automobile radios as Detroit's “big three” apply the state of the art in phase-locked loops, varactor tuning, and calculator-type logic. The main advantages are increased tuning accuracy, a virtually …
Continue reading at ieeexplore.ieee.org (other versions)

Classifications

    • H—ELECTRICITY
    • H03—BASIC 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
    • H03J5/0263—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 the digital values being held in an auxiliary non erasable memory
    • H—ELECTRICITY
    • H03—BASIC ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
    • H03L7/18—Indirect 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
    • H—ELECTRICITY
    • H03—BASIC 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
    • H—ELECTRICITY
    • H03—BASIC ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
    • H03J1/0008—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor
    • H03J1/0058—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor provided with channel identification means
    • H—ELECTRICITY
    • H03—BASIC ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/08—Details of the phase-locked loop
    • H03L7/10—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range
    • H—ELECTRICITY
    • H03—BASIC ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H03J3/02—Details
    • H03J3/04—Arrangements for compensating for variations of physical values, e.g. temperature
    • H—ELECTRICITY
    • H03—BASIC ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/18—Automatic scanning over a band of frequencies
    • H—ELECTRICITY
    • H03—BASIC ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
    • H03J1/02—Indicating arrangements
    • H03J1/04—Indicating arrangements with optical indicating means
    • H—ELECTRICITY
    • H03—BASIC ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J2200/00—Indexing scheme relating to tuning resonant circuits and selecting resonant circuits

Similar Documents

Publication Publication Date Title
US4315332A (en) Electronic timepiece radio
US4395777A (en) Double superheterodyne receiver
US4361906A (en) Channel selector having a plurality of tuning systems
CN106656173B (en) Frequency calibration circuit of oscillator and frequency calibration method thereof
US5023938A (en) Station selecting device in tuner for automatic selection according to input information
US4403344A (en) Receiver having program reserving function
US4223406A (en) Multi band radio receiver system with phase locked loop
US4220922A (en) Preset tuner
US4061980A (en) Radio receiver with plural converters and frequency control
US5570066A (en) Method of programming a frequency synthesizer
GB2038579A (en) Tuning apparatus
US4392253A (en) Phase locked loop circuit
EP0303715B1 (en) Receiver
CA1191976A (en) Phase locked loop tuning control system
Jurgen Automotive electronics: Tuneup for Detroit: New auto radios are rolling along in GM, Ford, and Chrysler products as electronics replaces mechanical tuners
US4516170A (en) Dual mode UHF tuning system
US4161708A (en) Electronic tuning system with digital band selection
Summerville et al. The Future of Digitally Tuned Automotive Radios
CA1096519A (en) Phase locked loop tuning system with a preset channel memory
JPS5818360Y2 (en) synthesizer type radio receiver
US4119915A (en) Electronic tuning system for radio receivers, with digital memorization of the signal frequency
JPS6110368Y2 (en)
JPS6042658B2 (en) Intermediate frequency correction circuit
US4228542A (en) Digital tuning FM stereophonic receiver including phase locked loop synthesizer
JP2557739B2 (en) PLL frequency synthesizer circuit