| Patents for H03J 7 - Automatic frequency control; Automatic scanning over a band of frequencies (3,745) |
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| 04/21/1981 | US4263675 AFT circuit |
| 04/21/1981 | US4263618 Touch switch arrangement useful in a television receiver |
| 04/21/1981 | US4263614 Phase tracking loop circuit |
| 04/21/1981 | US4263581 Manual tuning pulse generator |
| 04/14/1981 | US4262364 Electronic digital channel-selecting apparatus |
| 04/14/1981 | US4262363 Signal seeking stop circuit for amplitude modulated receiver |
| 04/14/1981 | CA1099412A1 Digital-to-analog converter |
| 04/02/1981 | WO1981000941A1 Improved tracking filter for fm threshold extension |
| 03/24/1981 | US4258355 Digital to analogue converters |
| 03/17/1981 | US4257018 Automatic tuning circuits for voltage controlled filters, by digital phase control |
| 03/17/1981 | CA1097831A1 Tuning apparatus for selecting preset broadcast frequencies |
| 03/17/1981 | CA1097830A1 Frequency synthesizer tuning system with signal seek |
| 03/11/1981 | EP0024763A1 Converter circuit for television signals |
| 03/03/1981 | US4254506 Channel identification apparatus useful in a multiband sweep type tuning system |
| 02/24/1981 | US4253195 FM-Receiver comprising a search tuning system |
| 02/24/1981 | US4253194 Receiver including a tuning circuit having a transmitter search |
| 02/24/1981 | CA1096447A1 Radio receiver |
| 02/03/1981 | US4249259 Digital channel selection apparatus |
| 02/03/1981 | US4249256 Continuous tuning arrangement for a multiband television receiver |
| 02/03/1981 | US4249255 Continuous tuning arrangement for a multiband television receiver |
| 02/03/1981 | US4249132 Continuous tuning arrangement for a multiband television receiver |
| 01/27/1981 | US4247952 Signal receiving apparatus |
| 01/27/1981 | US4247834 Control circuit for establishing voltage-controlled or injection-locked operation of a synthesizer reference oscillator |
| 01/27/1981 | CA1094679A1 Automatic frequency control apparatus for television receivers |
| 01/13/1981 | US4245354 Radio frequency regenerators |
| 01/13/1981 | US4245351 AFT Arrangement for a phase locked loop tuning system |
| 01/13/1981 | US4245349 Automatic frequency scanning radio receiver |
| 01/13/1981 | US4245348 Center frequency tuning system for radio-frequency signal receiver |
| 01/13/1981 | CA1093643A1 Ssb transceiver |
| 01/13/1981 | CA1093642A1 Mobile radiotelephone |
| 12/30/1980 | CA1092732A1 Channel selection apparatus of search tuning type |
| 12/23/1980 | US4241452 Automatic frequency control system |
| 12/23/1980 | US4241450 Automatic turn-off apparatus for a radio or television receiver |
| 12/23/1980 | US4241449 Memory saving all-channel digital television receiver |
| 12/16/1980 | US4240115 Channel selection voltage generator |
| 12/16/1980 | US4240114 Channel selection system for television receiver |
| 12/10/1980 | EP0019630A1 Intermediate frequency sensing circuit |
| 12/02/1980 | US4237556 Superheterodyne receiver having distortion reducing circuitry |
| 11/25/1980 | US4236251 Frequency synthesizer receiver having memory for storing frequency data |
| 11/25/1980 | US4236182 Automatic pre-programming system for TV receivers |
| 11/18/1980 | US4234961 Receiver comprising a tuning member and an automatic tuning correction suppression circuit |
| 11/04/1980 | US4232397 Automatic channel selection apparatus |
| 11/04/1980 | US4232396 Television channel lock-out apparatus |
| 11/04/1980 | US4232395 Multiband radio receiver with electronic preset tuning system |
| 11/04/1980 | US4232191 FM Receiving device |
| 11/04/1980 | CA1089097A1 Circuit for the conversion of a digital signal to a stochastic signal |
| 11/04/1980 | CA1089029A1 Clock pulse signal generator having automatic frequency control circuit |
| 11/04/1980 | CA1089017A1 Channel selecting apparatus in receiver |
| 10/15/1980 | EP0017130A1 Receiver for high-frequency, electromagnetic waves with frequency adjustment |
| 10/07/1980 | US4227254 Quasi-analog channel indicator for radio receivers |
| 09/30/1980 | US4225829 Local oscillator circuit having two phase locked loops having respective frequency dividers with a common division ratio |
| 09/23/1980 | US4224471 FM Radio receiver |
| 09/17/1980 | EP0015706A1 Electronically tunable radio receiver |
| 09/09/1980 | US4222121 Frequency synthesizer type receiver having a channel selection device |
| 09/03/1980 | EP0015161A1 Electronically tunable receiver |
| 09/02/1980 | US4220974 AFT circuit |
| 09/02/1980 | US4220973 Two-speed searching television tuner |
| 09/02/1980 | US4220970 Circuit arrangement for identifying television signals |
| 09/02/1980 | US4220922 Preset tuner |
| 08/19/1980 | US4218773 Superheterodyne receiver of scanning type with indicator means to display received frequency and frequency being stored in memory |
| 08/19/1980 | US4218657 Hangup corrector useful in locked loop tuning system |
| 08/12/1980 | US4217552 Receiver |
| 07/29/1980 | CA1082771A1 Dc voltage control device |
| 07/15/1980 | CA1081873A1 Dual mode frequency synthesizer for a television tuning apparatus |
| 07/09/1980 | EP0012899A1 Digital phase control circuit with auxiliary circuit |
| 07/08/1980 | US4211988 Search tuning system for television receiver |
| 06/24/1980 | US4209751 Channel selection apparatus |
| 06/17/1980 | US4208741 AFC System for a synthesizer tuning system |
| 06/11/1980 | EP0011647A1 Delay circuit |
| 06/11/1980 | EP0011646A1 Electronically tuned radio receiver |
| 06/10/1980 | US4207531 Tuning control system of radio receiver |
| 06/10/1980 | US4207529 Radio receiver |
| 06/03/1980 | US4206410 Automatic frequency control system for single sideband signal receiver |
| 05/27/1980 | US4205353 Combination device having a magnetic recording and reproducing unit and an electronic tuning type receiver |
| 05/27/1980 | US4205347 Television signal determination in an automatic tuning system |
| 05/27/1980 | CA1078462A1 Multiple-band digital frequency synthesizer receiver |
| 05/20/1980 | US4204171 Filter which tracks changing frequency of input signal |
| 05/20/1980 | US4204169 Muting circuit in an electronic tuning type receiver |
| 05/13/1980 | US4203076 Clock pulse signal generator having an automatic frequency control circuit |
| 05/06/1980 | US4201943 Tuning circuit for a high frequency heterodyne receiver with tuning controlled by direct voltage |
| 04/29/1980 | US4200841 Preset tuning apparatus using floating gate type field effect device |
| 04/22/1980 | CA1076261A1 Method of and apparatus for converting a plural-bit digital signal to a pulse width modulated signal |
| 04/16/1980 | EP0009618A1 Circuit and method for controlling a channel display in a superheterodyne receiver |
| 04/16/1980 | EP0009617A1 Circuit for controlling a receiving frequency and a channel display in a superheterodyne receiver |
| 04/15/1980 | US4198605 Channel selecting apparatus in a receiver |
| 04/15/1980 | CA1075838A1 Channel selection apparatus |
| 04/01/1980 | CA1074929A1 Channel selecting apparatus with reversible counter |
| 03/18/1980 | US4194159 Electronic tuning system |
| 03/11/1980 | CA1073531A1 Tunable scanning radio receiver |
| 02/26/1980 | US4190803 Multifrequency superheterodyne receiver with priority channel monitoring |
| 02/26/1980 | CA1072692A1 Digital tuning system for a varactor tuner employing feedback means for improved tuning accuracy |
| 02/19/1980 | CA1072230A1 Method of and apparatus for tuning an aft-controlled channel selecting apparatus to a desired frequency |
| 02/19/1980 | CA1072229A1 Method of and apparatus for tuning an aft-controlled electronic tuner to a desired frequency |
| 02/12/1980 | US4188579 SSB transceiver |
| 02/06/1980 | EP0007914A1 Manually operated tuning means |
| 02/05/1980 | US4187464 Scanning receiver |
| 01/22/1980 | US4185210 Contact de-bouncing circuit with common mode rejection |
| 01/15/1980 | US4184121 Wide window tuning system |
| 01/08/1980 | US4182991 Channel selecting apparatus for use with plural tuning devices |
| 01/01/1980 | US4181890 Apparatus for receiving signals in plural frequency bands |