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Class Information
Number: 360
Name: Dynamic magnetic information storage or retrieval >
Description: GENERAL STATEMENT OF THE CLASS SUBJECT MATTER










Class Number Class Name No. of Patents
360/69

Automatic control of a recorder mechanism

1324
360/75

Controlling the head

3000
360/76

Azimuth or skew

205
360/77.01

Track centering

179
360/77.12

Elongated web carrier (i.e., tape)

545
360/77.13

Transverse scan path

220
360/77.14

By pilot signal

174
360/77.15

Plural pilot signals along single transverse path

96
360/77.16

Having head deflection drive (e.g., piezoelectric bimorph)

169
360/77.17

Dithering

45
360/77.02

Rotary carrier

685
360/77.04

By memory storage of repeatable error or correction

625
360/77.03

By nonmagnetic sensing (e.g., optical, capacitive)

253
360/77.05

By servo signal component from carrier surface separate from information signal bearing surface

199
360/77.07

By tracking signal recorded on or immediately beneath surface

234
360/77.11

Continuous servo signal

86
360/77.08

Distinct servo sector

958
360/77.06

Reproduced data signal used for tracking

198
360/78.01

Track changing

58
360/78.04

For rotary carrier (e.g., disc)

844
360/78.14

By recorded servo reference or address signal

345
360/78.05

Coarse and fine head drive motors

199
360/78.15

Drum

6
360/78.09

Including model of servo system or element

295
360/78.11

Including nonmagnetic position sensing

116
360/78.12

Including particular head actuator

187
360/78.13

Stepping motor

138
360/78.08

Specified spatial pattern during access

117
360/78.06

Specified velocity pattern during access

334
360/78.07

Controlled by memory device

206
360/78.02

Tape

194
360/78.03

Plural tapes

11
360/71

Controlling the record

661
360/72.1

Locating specific areas

406
360/72.2

Responsive to recorded address

504
360/72.3

Responsive to tape transport

111
360/73.01

Speed

105
360/73.02

Control of relative speed between carriers

69
360/73.04

Linear carrier

152
360/73.09

Constant speed

65
360/73.11

By reproduced control signal and transport derived signal

68
360/73.12

By reproduced control signal

65
360/73.13

From separate track

30
360/73.14

By signal derived from transport

87
360/73.05

Plural speed transport

134
360/73.06

Automatic change between fixed speeds

106
360/73.07

Automatic selection of carrier or track speed

56
360/73.08

Variable speed

127
360/73.03

Rotary carrier

466
360/74.1

Stopping or reversing

373
360/74.4

Responsive to magnetic recorded signals

197
360/74.5

Responsive to physical property of record

25
360/74.7

Conductive

9
360/74.6

Photoelectric

73
360/74.2

Responsive to reel rotation

130
360/74.3

Responsive to tape tension

59
360/70

Synchronizing moving-head moving-record recorders

422
360/25

Checking record characteristics or modifying recording signal for characteristic compensation

436
360/32

Converting an analog signal to digital form for recording; reproducing and reconverting

679
360/900

Disk drive packaging

16
360/901

Access time

6
360/903

Physical parameter (e.g., form factor)

31
360/904

Weight

4
360/902

Storage density (e.g., bpi, tpi)

19
360/26

Electronically correcting phasing errors between related information signals

99
360/230

Fluid bearing head support

14
360/234

Disk record

25
360/234.3

Air bearing slider detail

86
360/235.4

Air bearing surface detail

132
360/236.9

Asymmetrical rail arrangement

34
360/236.4

Leading end detail

49
360/235.5

Negative pressure type

49
360/236.2

Asymmetrical rail arrangement

58
360/236

Cross rail detail

55
360/235.6

Leading end detail

109
360/235.9

Rail side edge detail

24
360/235.8

Rail surface detail

149
360/236.3

Three or more rails/pads

192
360/235.7

Trailing end detail

165
360/236.1

Varying width rail

84
360/237.1

Partial contact

54
360/236.7

Rail side edge detail

33
360/236.6

Rail surface detail

119
360/237

Three or more rails/pads

109
360/236.5

Trailing end detail

121
360/236.8

Varying width rail

47
360/234.5

Electrical attachment of slider/head

279
360/234.7

Head attachment to slider

146
360/234.9

In slot of rail

41
360/234.8

On/in side of slider

23
360/235

Signal winding mount/access detail

34
360/234.4

Ic/circuit component on slider

53
360/234.6

Mechanical attachment of slider to its support

146
360/235.1

Slider material

107
360/235.3

Body material

51
360/235.2

Rail material

69
360/234.2

Flexible disk

26
360/234.1

Liquid bearing

37
360/231

Tape record

11
360/220

Fluid bearing record support

3
360/224

Disk record

30
360/221

Tape record

21
360/221.1

Liquid bearing

0
360/39

General processing of a digital signal

487
360/49

Address coding

301
360/51

Data clocking

1531
360/52

With incremental movement between record and head

12
360/48

Data in specific format

1645
360/54

Data recirculation

43
360/53

Data verification

1188
360/46

Head amplifier circuit

1401
360/40

In specific code or form

458
360/44

Intra-cell transition

71
360/43

Multi-frequency

79
360/41

Nonreturn to zero

101
360/42

Phase code

54
360/50

Inter-record gap processing

84
360/45

Pulse crowding correction

182
360/47

Redundant or complimentary tracks

80
360/55

General recording or reproducing

459
360/58

Boundary displacement recording or transducers

9
360/60

Recording-or erasing-prevention

901
360/57

Selective erase recording

91
360/61

Signal switching

376
360/64

Between heads in alternate engagement with medium

359
360/63

Between plural stationary heads

211
360/62

Record-reproduce

212
360/66

Specifics of biasing or erasing

706
360/65

Specifics of equalizing

694
360/67

Specifics of the amplifier

687
360/68

Recording amplifier

427
360/59

Thermomagnetic recording or transducers

652
 

Head (340/110)

 
360/240

Head mounting

58
360/244

Disk record

42
360/245.8

Electrical connection detail

187
360/245.9

Flexible printed circuit type

459
360/246

Noise reduction

67
360/246.1

Full contact suspension

107
360/246.4

Gimbal detail

53
360/246.3

Pivot detail

55
360/246.5

Single head

4
360/246.2

Slider detail

83
360/245.3

Gimbal detail

215
360/245.4

Attachment detail

77
360/245.5

Integral with load beam

56
360/245.7

Motion limiter detail

125
360/245.6

Plural axis components

61
360/244.1

Ic/circuit component on suspension element

103
360/244.2

Load beam detail

160
360/244.5

Actuator mount region detail

176
360/244.7

Adhesive

19
360/244.6

Ball staking

87
360/245.2

Assembly feature

106
360/245

Gimbal mounting region detail

119
360/245.1

Pivot/load button detail

83
360/244.3

Laminated beam

129
360/244.4

Nonmetallic beam

24
360/244.9

Rigid intermediate section detail

149
360/244.8

Spring region detail

175
360/246.8

Offset heads on opposite sides of disk

57
360/246.6

Plural heads for each disk side

38
360/246.7

Plural actuators

20
360/290

For adjusting head position

19
360/294

Disk record

19
360/294.7

Adjustment along rotational axis of disk

154
360/294.1

Adjustment parallel to disk plane

58
360/294.3

Driver detail

110
360/294.4

Piezoelectric adjuster

343
360/294.5

Voice coil adjuster

60
360/294.2

Linear adjustment

24
360/294.6

Pivot structure detail

73
360/291

Tape record

66
360/291.1

Cam adjuster

10
360/291.4

Rotary head

8
360/291.6

Adjustable head mount

52
360/291.8

Adjuster coil detail

20
360/291.7

Adjuster core detail

23
360/291.9

Piezoelectric adjuster

37
360/292

Plural piezoelectric adjusters

20
360/291.5

Adjustment of drum axis

18
360/291.2

Screw adjuster

39
360/291.3

Plural screws

60
360/270

For moving head during transducing

18
360/274

Disk record

5
360/271

Tape record having rotary head

27
360/272

Power supply

11
360/271.1

Rotating drum

51
360/271.2

Axle bearing

25
360/271.3

Hydrodynamic

29
360/271.4

Axle seal

7
360/271.7

Drum motor

20
360/271.6

Drum mounting

36
360/271.5

Head mount to drum

87
360/281

Signal transfer to/from head

29
360/281.4

Coil/winding detail

18
360/282

Contact type transformer

1
360/281.5

Core detail

15
360/281.7

Electrical connection between head and rotary part of transformer

31
360/281.6

Electrical or magnetic shielding

14
360/281.9

Photoelectric

6
360/281.8

Plural transformers

8
360/281.2

Transformer axis parallel to axis of head rotation

18
360/281.3

Transformer axis perpendicular to axis of head rotation

19
360/281.1

Transformer mounting detail

14
360/271.8

Stationary drum

13
360/271.9

Electrical connection detail

11
360/250

For moving head into/out of transducing position

14
360/254

Disk record

16
360/254.2

Arcuate track change type

19
360/254.7

Fixed lifter

65
360/255

Actuator side detail

65
360/254.9

Adjustment detail

13
360/254.8

Lifter surface detail

86
360/254.3

Moving lifter

57
360/254.6

Actuator side detail

22
360/254.5

Adjustment detail

15
360/254.4

Lifter surface detail

24
360/254.1

Flexible disk

95
360/256

Latch

58
360/256.6

Adjustment detail

5
360/256.1

Air vane

39
360/256.3

Electrically driven

72
360/256.4

Inertial

69
360/256.2

Magnetic

136
360/256.5

Plural latches

10
360/255.1

Linear track change type

33
360/255.6

Fixed lifter

13
360/255.9

Actuator side detail

22
360/255.8

Adjustment detail

1
360/255.7

Lifter surface detail

15
360/255.2

Moving lifter

55
360/255.5

Actuator side detail

20
360/255.4

Adjustment detail

6
360/255.3

Lifter surface detail

15
360/251

Tape record having arcuate head retraction movement

56
360/251.1

Tape record having linear head retraction movement

89
360/251.3

Cam type

65
360/251.2

Driven by tape driver

28
360/251.5

Rotary head type

5
360/251.4

Solenoid type

30
360/260

For shifting head between tracks

18
360/264

Disk record

14
360/264.1

Arcuate head movement

45
360/265.2

Bearing

69
360/265.6

Mounting detail

119
360/265.4

Radial

10
360/265.3

Seal

9
360/265.5

Thrust

5
360/264.3

Driver detail

58
360/264.6

Band

24
360/264.4

Independent head movement

21
360/264.5

Plural drivers for each head

15
360/264.7

Voice coil

107
360/264.8

Core detail

72
360/264.9

Magnet detail

61
360/265

Winding detail

80
360/265.7

E block detail

129
360/265.9

Detail of actuator arm supporting head suspension

134
360/266.1

Arm mounting

89
360/266

Arm shape

78
360/265.8

Detail of coil support

67
360/264.2

Electrical connection detail onto actuator arm

267
360/265.1

Limiter/stop

101
360/267.9

Including shifting head to different disks

5
360/266.2

Linear head movement

42
360/267

Band

59
360/267.1

Cam

25
360/266.3

Electrical connection detail onto actuator arm

40
360/267.2

Rack

15
360/267.3

Screw

16
360/267.5

Carriage detail

20
360/267.6

Guide detail

30
360/267.7

Screw mount detail

14
360/267.8

Adjustable

9
360/267.4

Screw/follower detail

28
360/266.4

Voice coil

31
360/266.5

Carriage detail

53
360/266.6

Guide detail

58
360/266.7

Core detail

46
360/266.8

Magnet detail

29
360/266.9

Winding detail

32
360/261.1

Tape record having linear head movement

64
360/261.2

Cam

25
360/261.3

Screw

65
360/261

Tape record having rotary head movement

26
360/241

Tape record

28
360/241.3

Head urging detail

12
360/241.1

Plural head mounting on only one tape side

45
360/241.2

Plural head mounting on opposite tape sides

2
360/101

Head transport with record stationary during transducing

61
360/110

Head

307
360/116

Cathode ray

3
360/118

Erase

122
360/111

Flux gate

25
360/115

Flux scanning

33
360/119

Gap structure details

363
360/121

Plural gaps

682
360/120

Spacer material

193
360/112

Hall effect

57
360/117

Hand-held

8
360/128

Head accessory

636
360/129

Housing

164
360/130.3

Pressure element

58
360/130.34

Disc record

76
360/130.31

Tape record

47
360/130.33

Element in tape container

69
360/130.32

Element mounting details

42
360/130.2

Record guide

31
360/130.21

Tape record

195
360/130.22

Rotating head

60
360/130.23

Helical scan

84
360/130.24

Head drum details

159
360/130.1

Record separator

14
360/125

Head core

620
360/126

Laminated

1415
360/127

Nonmetallic

144
360/122

Head surface structure

1023
360/123

Head winding

419
360/124

For cross-talk prevention

60
360/313

Magnetoresistive (mr) reproducing head

307
360/318

Combined with inductive write head and having mr inside of inductive head

53
360/318.1

In horizontal head configuration

29
360/317

Combined with inductive write head in piggyback/merged configuration

656
360/320

Detail of head insulation

138
360/319

Detail of magnetic shielding

429
360/322

Detail of sense conductor

271
360/323

Electrostatic discharge (esd) protection

158
360/327

Having anisotropic magnetoresistive (amr) sensor formed of a single thin film

74
360/327.3

Detail of longitudinal biasing

34
360/327.31

Using a permanent magnet

53
360/327.33

Using conductor

9
360/327.32

Using exchange couple biasing

63
360/327.1

Detail of transverse and longitudinal biasing

31
360/327.11

In barber-pole configuration

12
360/327.2

Detail of transverse biasing

10
360/327.23

Using a permanent magnet

10
360/327.21

Using a shunt

10
360/327.22

Using a soft adjacent layer

46
360/327.24

Using conductor

14
360/325

Having anisotropic magnetoresistive (amr) sensor formed of multiple thin films

32
360/321

Having flux guide detail

147
360/326

Having giant magnetoresistive (gmr) or colossal magnetoresistive (cmr) sensor formed of a single thin film

54
360/324

Having giant magnetoresistive (gmr) or colossal magnetoresistive (cmr) sensor formed of multiple thin films

341
360/324.1

Having one film pinned (e.g., spin valve)

536
360/324.12

Detail of free layer or additional film for affecting or biasing the free layer

935
360/324.11

Detail of pinned film or additional film for affecting or biasing the pinned film

714
360/324.2

Having tunnel junction effect

725
360/316

Having multiple independent mr sensors

99
360/314

Having multiple interconnected multiple film mr sensors (e.g., dual spin valve magnetoresistive sensor)

156
360/315

Having multiple interconnected single film mr sensors (e.g., dual magnetoresistive sensor)

105
360/328

Magnetostrictive head

25
360/114.01

Read only detector using light for reading magnetically recorded information on tape

13
360/114.04

Beam splitter detail

3
360/114.02

Light beam generator detail

2
360/114.03

Focus detail

4
360/114.05

Readout detector detail

12
360/114.07

Circuit detail

5
360/114.08

Detector material detail

8
360/114.06

Focus detail

9
360/114.09

Mounting detail

6
360/114.1

Rotary head

0
360/4

Manual input recording

33
360/137

Miscellaneous

1075
360/29

Modulating or demodulating

171
360/30

Frequency

118
360/31

Monitoring or testing the progress of recording

1380
360/15

Record copying

394
360/16

Contact transfer

153
360/17

With magnetic bias

207
360/13

Record editing

299
360/131

Record medium

322
360/135

Disk

1216
360/136

Drum

239
360/132

In container

1509
360/133

For disk

1263
360/134

Tape

507
360/81

Record transport with head moving during transducing

25
360/82

Belt record

4
360/86

Disk record

151
360/87

Drum record

11
360/83

Tape record

28
360/84

Rotating head

308
360/85

Tape in container

690
360/88

Record transport with head stationary during transducing

52
360/97.01

Disk record

851
360/99.12

Disk seating

463
360/97.02

Environmental control (e.g., air filter, temperature control)

968
360/97.04

Flexible disk

44
360/97.03

Plural disks

250
360/99.01

Flexible disk

150
360/99.05

Disk seating

196
360/99.02

Loading or ejecting mechanism

245
360/99.03

Motorized

48
360/99.04

Rotational drive detail

186
360/99.06

Loading or ejecting mechanism

488
360/99.07

Motorized

111
360/98.01

Plural disks

257
360/98.02

Axially fixed flexible disks

50
360/98.03

With pneumatic partioning of disks

36
360/98.04

Changer

96
360/98.05

Control detail

49
360/98.06

Mechanical detail

126
360/98.07

Rotational drive detail

347
360/98.08

Seating of disks

285
360/99.08

Rotational drive detail

876
360/99.09

Movable drive

29
360/99.11

Stationary drive

17
360/100.1

Drum record

10
360/90

Tape record

198
360/91

Plural tapes

35
360/92

Tape in container

645
360/93

Tape in container

367
360/96.1

Plural reels

127
360/96.5

Container mounting details

697
360/96.6

With pivotal holder

158
360/96.3

Reel drive details

279
360/96.4

With common capstan drive

85
360/96.2

With dual capstan drive

63
360/94

Transport accommodates different types

230
360/95

With tape extraction

461
360/89

Wire record

2
360/79

Recorder control of an external device

75
360/80

Slide or movie projectors

30
360/6

Recording combined with metering or sensing

74
360/8

Recording for changing duration, frequency or redundant content of an analog signal

207
360/7

Recording for monetary delay of an analog signal

35
360/5

Recording for selective retention of a special occurrence

118
360/1

Recording on or reproducing from an element of diverse utility

89
360/2

Card

297
360/3

Motion picture film

67
360/27

Recording or reproducing an information signal and a control signal for controlling electronics of reproducer

388
360/28

Reference carrier to control demodulator

22
360/12

Recording or reproducing for automatic announcing

93
360/18

Recording or reproducing plural information signals on the same track

189
360/20

Frequency multiplex

34
360/21

Head gap azimuth multiplex

58
360/22

Splitting one information signal for recording on plural distinct tracks or reproducing such signal

158
360/23

Time division

38
360/24

Splitting, processing and recombining one information signal for recording or reproducing on the same track

48
 
 
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