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Class Information
Number: 360/61
Name: Dynamic magnetic information storage or retrieval > General recording or reproducing > Signal switching
Description: Subject matter including specific switching elements or techniques within the information signal circuitry.

Sub-classes under this class:

Class Number Class Name Patents
360/64 Between heads in alternate engagement with medium 359
360/63 Between plural stationary heads 211
360/62 Record-reproduce 212

Patents under this class:
1 2 3 4 5 6 7 8

Patent Number Title Of Patent Date Issued
5053897 Head position controlling circuit for disk unit including servo head selection Oct. 1, 1991
5053890 Magnetic recording and reproducing apparatus Oct. 1, 1991
5036409 Signal selection arrangement Jul. 30, 1991
5012356 Switching circuit Apr. 30, 1991
5008762 Parallel and continuous playback circuit for an audio cassette deck of the double-deck type Apr. 16, 1991
4999722 Multi-channel information signal reproducing apparatus for reproducing information signals from a tape-shaped record bearing medium having a plurality of areas which respectively extend longit Mar. 12, 1991
4996610 Disk-type magnetic recording apparatus with video signal discrimination means Feb. 26, 1991
4979053 Method of controlling recording magnetic field applied by gap of magnetic head in accordance with recording density of disk and magnetic apparatus therefor Dec. 18, 1990
4969135 System of alternately operating disk players Nov. 6, 1990
4967292 Head position controller for a disc storage unit Oct. 30, 1990
4926273 Apparatus and method for recording and reproducing information signals May. 15, 1990
4905093 Video reproduction apparatus with plural heads and field memory Feb. 27, 1990
4903151 Head positioning system for positioning a multiple head with respect to data and servo trasks of a recording medium Feb. 20, 1990
4903025 Signal path setting circuit Feb. 20, 1990
4897739 Multi-channel recording apparatus using a plurality of heads in turn Jan. 30, 1990
4897740 Recording/reproducing system for a magnetic recording medium including synchronization detecting circuit Jan. 30, 1990
4888654 Method of writing and reading digital data interspersed with analog audio frequency data on magnetic recording tape Dec. 19, 1989
4879609 Rotary head type recording apparatus having an erasing function based on recording mode Nov. 7, 1989
4873583 Magnetic tape recording/reproducing apparatus Oct. 10, 1989
4870514 Disk drive circuit arrangement for the suppression of undesired index pulses Sep. 26, 1989
4866546 Recording and reproducing apparatus for disk-type recording media Sep. 12, 1989
4864155 Circuitry for suppressing audible noise Sep. 5, 1989
4864424 Video signal recording/reproducing apparatus Sep. 5, 1989
4860129 Signal reproducing device Aug. 22, 1989
4851933 Magnetic disk apparatus having magnetic head with pre-erase gap Jul. 25, 1989
4851939 Actuator driving apparatus and magnetic disk drive system with a smaller number of high power amplifiers than actuators Jul. 25, 1989
4847706 Control circuit for double deck cassette tape recorder Jul. 11, 1989
4839733 Method and system for synchronization of an auxiliary sound source to motion picture film, video tape, or other picture source containing a sound track Jun. 13, 1989
4837644 Magnetic recording/reproduction apparatus Jun. 6, 1989
4833559 Capacitor multiplexing for magnetoresistive heads May. 23, 1989
4821127 Demagnetizing apparatus for erasing signals recorded on concentric tracks Apr. 11, 1989
4811119 Apparatus for high-density minimal crosstalk recording and reproducing of terminance and chrominance signals using a magnetic tape Mar. 7, 1989
4811126 Recording/reproducing system for a magnetic recording medium including synchronization detecting circuit Mar. 7, 1989
4809090 Recording/reproducing system having a magnetic head of preceding-erase type Feb. 28, 1989
4809093 Apparatus for selectively controlling magnetic tape recorder's muting operation in response to detection of errors in the reproduced signal by one of two heads Feb. 28, 1989
4807058 Tape recorder including device to prevent improper operation of recording operation Feb. 21, 1989
4803570 Rotary head type multichannel information signal reproducing apparatus having sub-information search function Feb. 7, 1989
4789905 Output signal switching circuit for a video tape recorder Dec. 6, 1988
4769724 Magnetic head drive apparatus which uses a common current source for the read/write head and the erasing head Sep. 6, 1988
4768111 Circuit arrangement for shaping an analog read output signal in a rotating mass memory Aug. 30, 1988
4768110 Video cassette recorder having dual decks for selective simultaneous functions Aug. 30, 1988
4758908 Method and apparatus for substituting a higher quality audio soundtrack for a lesser quality audio soundtrack during reproduction of the lesser quality audio soundtrack and a corresponding vis Jul. 19, 1988
4743985 In a video tape recorder having rotary recording, auxiliary and erasing heads, a circuit for short circuiting the auxiliary head during erasing May. 10, 1988
4737867 Power saving arrangement in information recording system Apr. 12, 1988
4734797 PCM-signal recording and/or reproducing apparatus Mar. 29, 1988
4706137 Head switching signal producing circuit with compensation of a phase error due to the positioning of a rotary drum head and a rotational phase detector Nov. 10, 1987
4688112 Power-saving data transfer apparatus with a flexible magnetic disk or the like Aug. 18, 1987
4644423 Automatic program source selection method and apparatus Feb. 17, 1987
4639795 Signal transmission circuit Jan. 27, 1987
4633337 Floppy disk driving with suitable on-delay and off-delay timing Dec. 30, 1986

1 2 3 4 5 6 7 8

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