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363-131 121-55A 14-.5
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Class Number: 360
Class Title: DYNAMIC MAGNETIC INFORMATION STORAGE OR RETRIEVAL
Subclass Subclass
Number Title
1 RECORDING ON OR REPRODUCING FROM AN ELEMENT OF DIVERSE UTILITY
2 .Card
3 .Motion picture film
4 MANUAL INPUT RECORDING
5 RECORDING FOR SELECTIVE RETENTION OF A SPECIAL OCCURRENCE
6 RECORDING COMBINED WITH METERING OR SENSING
7 RECORDING FOR MONETARY DELAY OF AN ANALOG SIGNAL
8 RECORDING FOR CHANGING DURATION, FREQUENCY OR REDUNDANT CONTENT
OF AN ANALOG SIGNAL
9.1 .Television signal
10.1 ..Fast, slow, or stop reproducing
10.2 ...Scan locus or tracking control
10.3 ...Tape
11.1 ..Field or frame skipping
12 RECORDING OR REPRODUCING FOR AUTOMATIC ANNOUNCING
13 RECORD EDITING
14.1 .Television
14.2 ..Control track
14.3 ...Numerical code
15 RECORD COPYING
16 .Contact transfer
17 ..With magnetic bias
18 RECORDING OR REPRODUCING PLURAL INFORMATION SIGNALS ON THE SAME
TRACK
19.1 .Audio and video
20 .Frequency multiplex
21 .Head gap azimuth multiplex
22 SPLITTING ONE INFORMATION SIGNAL FOR RECORDING ON PLURAL
DISTINCT TRACKS OR REPRODUCING SUCH SIGNAL
23 .Time division
24 SPLITTING, PROCESSING AND RECOMBINING ONE INFORMATION SIGNAL FOR
RECORDING OR REPRODUCING ON THE SAME TRACK
25 CHECKING RECORD CHARACTERISTICS OR MODIFYING RECORDING SIGNAL
FOR CHARACTERISTIC COMPENSATION
26 ELECTRONICALLY CORRECTING PHASING ERRORS BETWEEN RELATED
INFORMATION SIGNALS
27 RECORDING OR REPRODUCING AN INFORMATION SIGNAL AND A CONTROL
SIGNAL FOR CONTROLLING ELECTRONICS OF REPRODUCER
28 .Reference carrier to control demodulator
29 MODULATING OR DEMODULATING
30 .Frequency
31 MONITORING OR TESTING THE PROGRESS OF RECORDING
32 CONVERTING AN ANALOG SIGNAL TO DIGITAL FORM FOR RECORDING;
REPRODUCING AND RECONVERTING
33.1 GENERAL PROCESSING OF A TELEVISION SIGNAL
34.1 .Inverting polarity of alternate periods
35.1 .Single field or frame recording
36.1 .Time correction
36.2 ..Digital techniques
37.1 .Synchronization signal modifying
38.1 .Drop-out correction
39 GENERAL PROCESSING OF A DIGITAL SIGNALL
40 .In specific code or form
41 ..Nonreturn to zero
42 ..Phase code
43 ..Milti-frequency
44 ..Intra-cell transition
45 .Pulse crowding correction
46 .Head amplifier circuit
47 .Redundant or complimentary tracks
48 .Data in specific format
49 .Address coding
50 .Inter-record gap processing
51 .Data clocking
52 ..With incremental movement between record and head
53 .Data verification
54 .Data recirculation
55 GENERAL RECORDING OR REPRODUCING
57 .Selective erase recording
58 .Boundary displacement recording or transducers
59 .Thermomagnetic recording or transducers
60 .Recording-or erasing-prevention
61 .Signal switching
62 ..Record-reproduce
63 ..Between plural stationary heads
64 ..Between heads in alternate engagement with medium
65 .Specifics of equalizing
66 .Specifics of biasing or erasing
67 .Specifics of the amplifier
68 ..Recording amplifier
69 AUTOMATIC CONTROL OF A RECORDER MECHANISM
70 .Synchronizing moving-head moving-record recorders
71 .Controlling the record
72.1 ..Locating specific areas
72.2 ...Responsive to recorded address
72.3 ...Responsive to tape transport
73.01 ..Speed
73.02 ...Control of relative speed between carriers
73.03 ...Rotary carrier
73.04 ...Linear carrier
73.05 ....Plural speed transport
73.06 .....Automatic change between fixed speeds
73.07 .....Automatic selection of carrier or track speed
73.08 .....Variable speed
73.09 ....Constant speed
73.11 .....By reproduced control signal and transport derived
signal
73.12 .....By reproduced control signal
73.13 ......From separate track
73.14 .....By signal derived from transport
74.1 ..Stopping or reversing
74.2 ...Responsive to reel rotation
74.3 ...Responsive to tape tension
74.4 ...Responsive to magnetic recorded signals
74.5 ...Responsive to physical property of record
74.6 ....Photoelectric
74.7 ....Conductive
75 .Controlling the head
76 ..Azimuth or skew
77.01 ..Track centeringg
77.02 ...Rotary carrier
77.03 ....By nonmagnetic sensing (e.g., optical, capacitive)
77.04 ....By memory storage of repeatable error or correction
77.05 ....By servo signal component from carrier surface separate
from information signal bearing surface
77.06 ....Reproduced data signal used for tracking
77.07 ....By tracking signal recorded on or immediately beneath
surface
77.08 .....Distinct servo sector
77.11 .....Continuous servo signal
77.12 ...Elongated web carrier (i.e., tape)
77.13 ....Transverse scan path
77.14 .....By pilot signal
77.15 ......Plural pilot signals along single transverse path
77.16 .....Having head deflection drive (e.g., piezoelectric
bimorph)
77.17 ......Dithering
78.01 ..Track changing
78.02 ...Tape
78.03 ....Plural tapes
78.04 ...For rotary carrier (e.g., disc)
78.05 ....Coarse and fine head drive motors
78.06 ....Specified velocity pattern during access
78.07 .....Controlled by memory device
78.08 ....Specified spatial pattern during access
78.09 ....Including model of servo system or element
78.11 ....Including nonmagnetic position sensing
78.12 ....Including particular head actuator
78.13 .....Stepping motor
78.14 ....By recorded servo reference or address signal
78.15 ....Drum
79 RECORDER CONTROL OF AN EXTERNAL DEVICE
80 .Slide or movie projectors
81 RECORD TRANSPORT WITH HEAD MOVING DURING TRANSDUCING
82 .Belt record
83 .Tape record
84 ..Rotating head
85 ...Tape in container
86 .Disk record
87 .Drum record
88 RECORD TRANSPORT WITH HEAD STATIONARY DURING TRANSDUCING
89 .Wire record
90 .Tape record
91 ..Plural tapes
92 ...Tape in container
93 ..Tape in container
94 ...Transport accommodates different types
95 ...With tape extraction
96.1 ...Plural reels
96.2 ....With dual capstan drive
96.3 ....Reel drive details
96.4 .....With common capstan drive
96.5 ....Container mounting details
96.6 .....With pivotal holder
97.01 .Disk record
97.02 ..Environmental control (e.g., air filter, temperature
control)
97.03 ...Plural diskss
97.04 ...Flexible disk
98.01 ..Plural disks
98.02 ...Axially fixed flexible disks
98.03 ....With pneumatic partioning of disks
98.04 ...Changer
98.05 ....Control detail
98.06 ....Mechanical detail
98.07 ...Rotational drive detail
98.08 ...Seating of disks
99.01 ..Flexible disk
99.02 ...Loading or ejecting mechanism
99.03 ....Motorized
99.04 ...Rotational drive detail
99.05 ...Disk seating
99.06 ..Loading or ejecting mechanism
99.07 ...Motorized
99.08 ..Rotational drive detail
99.09 ...Movable drive
99.11 ...Stationary drive
99.12 ..Disk seating
100.1 .Drum record
101 HEAD TRANSPORT WITH RECORD STATIONARY DURING TRANSDUCING
102 FLUID BEARING HEAD
103 .Flying head
104 HEAD MOUNTING
105 .For moving head into and out of transducing position
106 .For shifting head between tracks
107 .For moving head during transducing
108 ..Signal transfer to and from head
109 .For adjusting head position
110 HEAD
111 .Flux gate
112 .Hall effect
113 .Magnetoresistive or magnetostrictive
114 .Magneto-optic
115 .Flux scanning
116 .Cathode ray
117 .Hand-held
118 .Erase
119 .Gap structure details
120 ..Spacer material
121 ..Plural gaps
122 .Head surface structure
123 .Head winding
124 ..For cross-talk prevention
125 .Head core
126 ..Laminated
127 ..Nonmetallic
128 .Head accessory
129 ..Housing
130.1 ..Record separator
130.2 ..Record guide
130.21 ...Tape record
130.22 ....Rotating head
130.23 .....Helical scan
130.24 ......Head drum details
130.3 ..Pressure element
130.31 ...Tape recordd
130.32 ....Element mounting details
130.33 ....Element in tape container
130.34 ...Disc record
131 RECORD MEDIUM
132 .In container
133 ..For disk
134 .Tape
135 .Disk
136 .Drum
137 MISCELLANEOUS
* *******************************
* CROSS-REFERENCE ART COLLECTIONS
* *******************************
900 DISK DRIVE PACKAGING
901 .Access time
902 .Storage density (e.g., bpi, tpi)
903 .Physical parameter (e.g., form factor)
904 ..Weight