|
CN1003273B
|
|
Video signal recording and reproducing device
|
|
US3840142A
|
|
Miniature tape cartridges
|
|
US3821797A
|
|
System for recording and reproducing a wide band signal
|
|
US3761098A
|
|
Pick-up arm elevator
|
|
US3803367A
|
|
Recording system for a multichannel record disk
|
|
US3769612A
|
|
Compressing andor expanding circuit having non linear control circuitto reduce modulation noise
|
|
US3784869A
|
|
Vertical convergence circuit
|
|
US3772468A
|
|
Capstan phase matching system in an electronic editing mode for magnetic recording and reproducing apparatus
|
|
US3769449A
|
|
Color video signal recording and reproducing system
|
|
US3763331A
|
|
Magnetic transducer head supported by flexible diaphragm
|
|
US3798673A
|
|
Ac bias control recording system and apparatus in a magnetic recording apparatus
|
|
US3796840A
|
|
Four-channel headphone
|
|
US3759464A
|
|
Automatic tape running reversing apparatus for use in a tape recorder
|
|
US3843850A
|
|
Four channel record reproducing apparatus with muting of speakers not used for stereo or monaural records
|
|
US3772467A
|
|
System for cutting and recording on a record disc
|
|
US3774917A
|
|
Apparatus for manually operating a pick-up arm in an automatic record player
|
|
US3757254A
|
|
N system noise reduction system and apparatus using a compression and expansio
|
|
US3787275A
|
|
Phonograph record disc
|
|
US3732457A
|
|
Electrode lens potential arrangement for a post-acceleration picture tube
|
|
US3723643A
|
|
System for recording and reproducing a wide-band signal
|
