| Patents for G11B 31 - Arrangements for the associated working of recording or reproducing apparatus with related apparatus (6,218) |
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| 01/05/1982 | US4309729 Magnetic tape cassette reproducing and/or recording system |
| 12/29/1981 | US4308425 Variable-directivity microphone device |
| 12/08/1981 | US4304060 Phonograph actuated elements |
| 12/08/1981 | CA1113747A1 Electronic player piano with base and treble expression effects |
| 12/08/1981 | CA1113746A1 Electronic player piano having a system for encoding of expression effects |
| 12/01/1981 | US4303998 Dictation recording system |
| 12/01/1981 | US4303807 Ultra-small portable sound reproducing apparatus |
| 11/10/1981 | US4300225 Disco beat meter |
| 10/27/1981 | CA1111288A1 Method and apparatus for recording digital signals for actuating solenoid |
| 10/06/1981 | US4293742 Microphone device |
| 09/30/1981 | EP0036797A1 Appliance for the animation of objects in reply to acoustical signals |
| 09/02/1981 | EP0034627A1 Editor for combining digitally recorded audio signals. |
| 08/20/1981 | WO1981002374A1 Modular stereophonic high fidelity installation |
| 08/04/1981 | CA1106212A1 Circuit for controlling the expression of an electronically controlled keyboard instrument |
| 07/21/1981 | US4280148 Audio recording apparatus and method |
| 07/09/1981 | WO1981001901A1 Automated conversation system |
| 07/07/1981 | CA1104387A1 Circuit for reducing solenoid hold-in power in electronic player pianos & similar keyboard operated instruments |
| 07/07/1981 | CA1104386A1 Circuit for tracking tempo variation in player pianos |
| 06/09/1981 | CA1102915A1 Pair of video tape recorders |
| 06/02/1981 | CA1102449A1 Automated recording tape cartridge retrieval, handling and replay machine |
| 05/26/1981 | US4270151 Microphone mixer with predistortion indication |
| 05/19/1981 | US4268724 Continuous timed segment broadcast recorder system |
| 05/12/1981 | CA1100886A1 Phonograph actuated elements |
| 04/14/1981 | US4262314 Automatic multiple tape player |
| 04/07/1981 | US4261020 Continuous speed control system for video tape recorder |
| 04/07/1981 | US4260854 Rapid simultaneous multiple access information storage and retrieval system |
| 04/01/1981 | EP0025967A1 Endoscope system having a tape recorder |
| 03/05/1981 | WO1981000640A1 Editor for combining digitally recorded audio signals |
| 03/03/1981 | US4254307 Sequential encoding and decoding apparatus for providing identification signals to a dictation recorder |
| 02/03/1981 | US4249218 Method and apparatus for editing digitally recorded audio signals |
| 12/24/1980 | WO1980002886A1 Player piano recording system |
| 12/02/1980 | US4237540 Tape recorder with table computer |
| 11/11/1980 | US4233686 Radio tuner for coupling with tape recorder |
| 10/28/1980 | US4230909 Telephone answering machine |
| 10/14/1980 | US4228474 Adapter unit for translating electrical signals |
| 09/09/1980 | US4222119 Multi-purpose radio |
| 08/19/1980 | CA1084157A1 T.v. receiver with selection of broadcast or external video signal |
| 07/22/1980 | US4214258 Portable television camera and tape recorder combination |
| 07/09/1980 | EP0013024A1 Dictate station identifier |
| 07/01/1980 | US4210939 Method and system for synchronizing the movement of plural recording media |
| 07/01/1980 | US4210094 Radio tuner for coupling with cassette tape recorder |
| 06/17/1980 | US4208686 Tape recorder with means for displaying a time by normal and stopwatch modes |
| 05/27/1980 | US4205353 Combination device having a magnetic recording and reproducing unit and an electronic tuning type receiver |
| 05/20/1980 | US4204236 Speaker device having a holding means for a superminiature tape recorder |
| 05/20/1980 | CA1078059A1 Public address apparatus |
| 05/14/1980 | EP0011025A1 Sound reproducing apparatus with interchangeable modules |
| 05/13/1980 | US4203139 Play/record switching circuit for a signal reproducing and recording apparatus |
| 05/06/1980 | US4201895 Passive audio signal mixing apparatus |
| 05/06/1980 | CA1076856A1 Audio-visual projection apparatus |
| 04/22/1980 | US4199724 Radio tuner for coupling with cassette tape recorder |
| 04/15/1980 | US4198549 Multiplexed central dictation system |
| 02/19/1980 | US4189636 Tape recorder provided with a count display for counting and displaying a number of reel rotations |
| 01/08/1980 | US4182554 Motion-picture sound film projector |
| 01/01/1980 | US4181823 Radio and tape player apparatus |
| 12/18/1979 | US4179715 Electric circuit for accessory for host tape recorder |
| 12/04/1979 | US4176578 System for encoding of bass and treble expression effects while recording from the keyboard of an electronic player piano |
| 11/20/1979 | US4174652 Method and apparatus for recording digital signals for actuating solenoid |
| 10/30/1979 | US4172403 Method and apparatus for encoding of expression while recording from the keyboard of an electronic player piano |
| 10/02/1979 | US4169401 Circuit for reducing solenoid hold-in power in electronic player pianos and similar keyboard operated instruments |
| 09/18/1979 | CA1062805A1 Magnetic recording apparatus with a plurality of signal receiving devices |
| 09/11/1979 | US4167787 Tape recorder apparatus with a tape-running direction display |
| 09/11/1979 | US4167257 Tape deck capstan shifting apparatus |
| 08/14/1979 | CA1060208A1 Toy telephone having recorded messages |
| 07/24/1979 | US4161901 Dynamically adaptive player piano roll to magnetic tape formating system and playback |
| 05/22/1979 | CA1055158A1 Magnetic recording apparatus |
| 05/03/1979 | WO1979000226A1 Driving method for a recording tape and apparatus for a telephone answering system |
| 04/24/1979 | US4151470 Combined portable tape recorder and stereophonic receiver system |
| 04/10/1979 | US4149043 Cassette tape recorder with radio receiver |
| 03/20/1979 | US4145724 Automated magnetic tape cartridge retrieval handling and replay machine |
| 02/13/1979 | US4139865 Television receiver with video changeover switch responsive to channel selector |
| 01/23/1979 | US4135428 Circuit for controlling the expression of an electronically controlled keyboard instrument |
| 10/17/1978 | US4121263 Method and apparatus for control signal separation to regain synchronization between a visual image projector and an audio program |
| 10/17/1978 | CA1040715A1 Dial scale and station indicator |
| 10/10/1978 | US4120037 Desk-top electronic calculator and tape recorder assembly |
| 10/10/1978 | US4119813 Cassette tape recorder with detachable coupling to radio |
| 10/03/1978 | US4117605 Real time conversational toy having secure playback response |
| 09/19/1978 | US4115824 Method for regaining synchronization between a visual image projector and an associated audio playback machine |
| 08/22/1978 | US4109115 Magnetic recording apparatus with a plurality of signal receiving devices |
| 08/08/1978 | US4104821 Toy telephone with bell and recorded messages |
| 07/11/1978 | US4100582 Audio-visual apparatus |
| 07/11/1978 | US4099421 Pushbutton tuner |
| 06/13/1978 | US4095261 Audio tape recorder, editor and amplifying system |
| 05/30/1978 | US4092062 Signal device for electro-acoustic reproducing equipment |
| 05/16/1978 | US4090134 Combinated transceiver, cartridge tape player and radio unit |
| 05/16/1978 | US4089598 Phonograph device |
| 03/14/1978 | US4078316 Real time conversational toy |
| 02/21/1978 | US4075668 Digital logic control for audio visual programs and method therefor |
| 02/14/1978 | US4074082 Coupling device between tape recorder and attachment |
| 02/07/1978 | US4072989 Audio-visual presentation device |
| 01/24/1978 | US4070698 Point of sale automatic announcing system with preprogrammed capacity |
| 01/24/1978 | US4070697 Appointment calendaring clock |
| 01/17/1978 | US4069397 Automatic telephone answering device |
| 12/20/1977 | US4064374 Coupling device for radio set and small size tape recorder |
| 11/15/1977 | US4058687 Cassette recorder with switching for a device for noise suppression |
| 10/18/1977 | US4054920 Device for storing electromagnetic control signals on magnetic strip material and a sound film projector equipped therewith |
| 09/06/1977 | US4046973 Combined portable tape recorder and stereophonic receiver system |
| 08/09/1977 | US4041250 Coupling device for cassette tape recorder |
| 07/19/1977 | US4037053 Automatic telephone answering apparatus |
| 07/12/1977 | US4035589 Entertainment and public address system with replay of entertainment program after a public address interruption |
| 07/05/1977 | US4034164 Citizens band cartridge for tape decks |