Patents
Sitemap › H03 - Basic electronic circuitry › H03J - Tuning resonant circuits; Selecting resonant circuits › H03J 7 - Automatic frequency control; Automatic scanning over a band of frequencies
Patents for H03J 7 - Automatic frequency control; Automatic scanning over a band of frequencies (3,745)
09/1978
09/05/1978CA1038076A1 Noise compensation in a t.v. receiver
08/1978
08/29/1978US4110695 Tuning circuit for high frequency receivers
08/29/1978US4110693 Lockup inhibiting arrangement for a phase locked loop tuning system
08/22/1978US4109283 Frequency counter for a television tuning system
08/22/1978US4109141 Counter output detector circuit
08/15/1978US4107615 Receiver including an automatic tuning correction suppression circuit coupled to the tuning member
08/15/1978US4107585 Control devices
07/1978
07/25/1978US4103106 Mobile radiotelephone apparatus and method
07/11/1978US4100578 AFT summing circuit for varactor-type tuning systems
07/11/1978US4100497 Selective rescan delay for multi-channel scanning radio receiver
06/1978
06/27/1978US4097811 Radio with automatic scan tuning
06/13/1978US4095191 Phase locked loop circuit
06/06/1978US4093922 Microcomputer processing approach for a non-volatile TV station memory tuning system
06/06/1978US4093921 Microcomputer processing approach for a non-volatile TV station memory tuning system
05/1978
05/30/1978US4092602 Automatic frequency control for FM-receiver
05/23/1978US4091410 Frequency and phase lock loop synchronous detecting system having a pair of phase lock conditions
05/16/1978US4090143 Digital phase comparator with reset
05/09/1978US4088959 Multiple-band digital frequency synthesizer receiver
04/1978
04/18/1978US4085372 Channel selecting apparatus for a television receiver with an electronic tuner
04/18/1978US4085371 Automatically tuned memory television channel selecting apparatus
04/11/1978US4084127 Digital frequency deviation detector useful in a television tuning system
04/04/1978US4083014 Frequency lock loop
03/1978
03/28/1978US4081771 82 Detent manual varactor tuning system
03/14/1978US4079420 Channel selecting apparatus
03/14/1978US4079320 Method of and apparatus for tuning an AFT-controlled channel selecting apparatus to a desired frequency
03/07/1978US4078212 Dual mode frequency synthesizer for a television tuning apparatus
02/1978
02/28/1978US4077009 Tuning circuit for high frequency receivers
02/28/1978US4077008 Phase locked loop tuning system with station scanning provisions
02/21/1978US4075567 Broadcast receiver tuning circuit with station memory
02/14/1978US4074216 Receiver tuning circuit
02/14/1978US4074200 Circuit arrangement for selective frequency analysis of the amplitudes of one or more signals
01/1978
01/24/1978US4070629 High speed tuning system
01/17/1978US4069455 Arrangement for maintaining reception of a radio receiver on the stronger of two signals
12/1977
12/20/1977US4064461 Receiver including a station finding circuit
12/13/1977US4063188 Injection-locked voltage controlled oscillators
12/13/1977US4063179 Channel selector for a scanning monitor receiver
12/06/1977US4061982 Channel selection apparatus provided with memory for digitalizing and storing channel selection voltage
12/06/1977US4061981 Voltage variable capacitor tuned radio receiver having delayed automatic frequency control at turn-on
12/06/1977US4061980 Radio receiver with plural converters and frequency control
11/1977
11/15/1977US4058772 Method of and apparatus for converting a plural-bit digital signal to a pulse width modulated signal
11/08/1977US4057760 Frequency synthesized scanner having conductive programming elements for channel selection
10/1977
10/11/1977US4053838 Radio receiver
09/1977
09/13/1977US4048562 Monitoring system for voltage tunable receivers and converters utilizing voltage comparison techniques
09/06/1977US4047226 Television signal-seeking automatic tuning system
09/06/1977US4047111 Tuning system for AM/FM receivers
08/1977
08/30/1977US4045741 Scanning receiver for use in a tour guide system
08/09/1977US4041535 Frequency synthesizer tuning system with signal seek control
07/1977
07/26/1977US4038689 Frequency synthesizer tuning system with manual fine tuning control
07/05/1977US4034298 Cascode FM tuner for a radio receiver
07/05/1977US4033882 Wideband heterodyne receiver for laser communication system
06/1977
06/21/1977US4031549 Television tuning system with provisions for receiving RF carrier at nonstandard frequency
06/21/1977US4031475 Electronic channel selecting apparatus
06/21/1977US4031473 Station selecting device having improved monitor
06/21/1977US4031471 Automatic frequency control circuit
05/1977
05/31/1977US4027252 Tuning voltage circuit
05/31/1977US4027251 Radio receiver using frequency synthesizer
05/24/1977US4025953 Frequency synthesizer tuning system for television receivers
05/17/1977US4024464 Frequency synthesizer of the phase lock loop type
05/17/1977US4024461 FM discriminator
05/10/1977US4023108 Electronically controllable tuning device having a frequency synthesizer
05/10/1977US4023107 Sequential channel tuning system with a memory
04/1977
04/26/1977US4020419 Electronic system for automatically tuning to a selected television channel
03/1977
03/08/1977US4011515 Tunable scanning radio receiver
03/08/1977US4011514 Memory circuit for tuning of an electronically tuned receiver to a preselected station
02/1977
02/22/1977US4009442 Device which among a number of radio signals selects one specially marked radio signal
02/22/1977US4009438 Superheterodyne receiver with a digitally adjustable tuning arrangement
02/15/1977US4008437 Automatic tuning apparatus
02/15/1977US4008436 Channel selecting apparatus
01/1977
01/25/1977US4005256 AFC circuit
01/18/1977US4004233 Search type tuning device
01/18/1977US4004232 Radio receiver tuning control system
01/18/1977US4004231 AFC circuit
01/11/1977US4002985 Channel selection indicator for memory tuning system
12/1976
12/28/1976US4000470 Radio receiver
12/28/1976US4000468 Programmable signal seeking radio receiver
12/14/1976US3997856 Frequency discriminator circuit arrangement
12/07/1976US3996521 Signal-seeking radio receiver with band tuning and selecting means
11/1976
11/16/1976US3992581 Phase locked loop NRZ data repeater
11/09/1976US3991371 Automatic frequency control of voltage variable capacitor tuned receivers
11/02/1976US3990027 Channel selector for electronic tuner having channel voltages stored in memory
10/1976
10/26/1976US3988681 Automatic tuning system
10/19/1976US3987400 Multiband scanning radio receiver
10/19/1976US3987399 Radio receiver
10/12/1976US3986154 Automatic tuning apparatus
09/1976
09/28/1976US3983492 Frequency scan and lock circuit for mobile radio channel selection
09/21/1976US3982188 Station selecting device having improved noise discrimination circuitry
09/14/1976US3980968 Non-proportionate AFC system
09/14/1976US3980958 Signal seeking tuning system with illegal channel detection means
09/07/1976US3979609 Station finder circuit for two directions
08/1976
08/10/1976US3974452 Battery powered scanning receiver with synchronous power cycling through electrically operable visual indicators
08/03/1976US3973206 Monitoring system for voltage tunable receivers and converters utilizing an analog function generator
07/1976
07/27/1976US3971992 Apparatus for presetting receivers of the synthesizing type
07/27/1976US3971991 Television tuning system with varactor malfunction detection
07/13/1976US3969675 Single side-band radio
07/06/1976US3968447 Method of amplitude-frequency conversion and a converter which operates in accordance with said method
07/06/1976US3968444 Skip band tuner
07/06/1976US3968443 Solid state television channel selection system
07/06/1976US3968442 Receiver tuning circuit
07/06/1976US3968441 Receiver tuning circuit with automatic search and AFC using common capacitor
07/06/1976US3968437 Receiver including an automatic tuning correction suppression circuit coupled to a tuning member
1 ... 27 28 29 30 31 32 33 34 35 36 37 38