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Class Information
Number: 455
Name: Telecommunications >
Description: This is the generic class for modulated carrier wave communications not elsewhere classifiable.










Class Number Class Name No. of Patents
455/2.01

Audience survey or program distribution use accounting

161
455/7

Carrier wave repeater or relay system (i.e., retransmission of same information)

679
455/19

Common antenna

74
455/25

Directive antenna

315
455/8

Failure compensation (e.g., spare channel)

200
455/23

Frequency or phase modulation

128
455/9

Monitoring

417
455/10

Fading compensation

169
455/17

Plural modulated carriers

223
455/11.1

Portable or mobile repeater

1237
455/12.1

Space satellite

1545
455/13.4

Power control

654
455/13.3

With antenna feed network or multiple antenna switching

416
455/13.1

With plural repeater or relay systems

796
455/13.2

With synchronizing of satellites or system

416
455/24

Transmitter/receiver feedback compensation

226
455/15

Two separate way transmission

289
455/16

Simultaneous using plural repeaters at each location

228
455/18

With delay or recording

139
455/20

With frequency conversion

215
455/22

Plural conversion stages

110
455/21

With demodulator

73
455/14

With transmission line

137
455/400

Having single-channel telephone carrier

27
455/401

Including call signaling (e.g., ringing, off-hook, dialing)

119
455/402

Over power line

221
455/1

Interference signal transmission (e.g., jamming)

335
455/899

Miscellaneous

59
455/403

Radiotelephone system

1195
455/466

Auxiliary data signaling (e.g., short message service (sms))

3389
455/404.1

Emergency or alarm communication

1446
455/404.2

Location monitoring

1794
455/461

Including personal numbering system (i.e., intelligent network for subscriber tracking or follow-me subscriber feature)

582
455/462

Including private cordless extension system

606
455/464

Channel selection or allocation

683
455/463

Multi-users

269
455/465

Including public cordless extension system

271
455/412.1

Message storage or retrieval

2258
455/412.2

Having message notification

1352
455/413

Voice mail

813
455/421

Out-of-range indication

428
455/418

Programming control

3095
455/419

Remote programming control

1909
455/420

Control of another apparatus

1385
455/410

Security or fraud prevention

2217
455/411

Privacy, lock-out, or authentication

3092
455/414.1

Special service

4632
455/416

Call conferencing

668
455/417

Call diversion

923
455/415

Caller identification

1112
455/414.2

User location independent information retrieval

1275
455/414.3

Based on request (e.g., news, weather, etc.)

828
455/414.4

Format conversion (e.g., text, audio, etc.)

567
455/405

Usage measurement

952
455/406

Billing

1613
455/408

At remote station

681
455/407

At subscriber unit

557
455/409

Rental

144
455/422.1

Zoned or cellular telephone system

2824
455/431

Airborne or aircraft

454
455/445

Call routing (e.g., to prevent backhaul, routing efficiency, least cost, or alternate routing)

2732
455/450

Channel allocation

4777
455/452.1

Dynamic allocation

2031
455/452.2

Based on service quality (e.g., bandwidth, etc.)

2069
455/451

Hybrid allocation

592
455/453

Load balancing

1618
455/454

Spectrum sharing for different type of system (e.g., point-to-point microwave, television, etc.)

400
455/455

Channel seizing

529
455/434

Control or access channel scanning

1811
455/423

Diagnostic testing, malfunction indication, or electrical condition measurement

2155
455/425

Subscriber equipment

911
455/424

System equipment

1010
455/436

Handoff

5234
455/440

Based upon unit location

1024
455/441

Based upon unit velocity

452
455/444

Between macro and micro cells

743
455/439

Handoff initiated by another source (e.g., target, user initiated, mobile switching center (msc), or mobile telephone switching office (mtso), etc.)

1358
455/437

Mobile assisted or initiated

1795
455/443

Overlapping cells

738
455/438

Serving site initiated

1069
455/442

Soft handoff

1619
455/446

Including cell planning or layout

1188
455/448

Co-located systems

395
455/447

Frequency reuse scheme

703
455/449

Hierarchical cell structure

340
455/426.1

Including other radio communication system (e.g., cordless telephone, paging, trunking, etc.)

1634
455/456.1

Location monitoring

5549
455/456.6

At remote station (i.e., mobile station)

1283
455/456.5

At system equipment (i.e., base station)

1302
455/456.2

Based on request signal

1588
455/457

Location display

1084
455/456.3

Position based personal service

2141
455/456.4

Quiet or transmission prevention mode

451
455/435.1

Registration

2605
455/435.2

System selection

1207
455/435.3

Based on priority

407
455/432.1

Roaming

2205
455/433

Home location registration (hlr) or visitor location registration (vlr) detail

1829
455/432.3

Service profile

698
455/432.2

System format conversion

475
455/427

Space satellite

976
455/429

Cell projection

227
455/430

Ground station control

331
455/428

Switching or routing

802
455/458

Specific paging technique

1143
455/460

Auto-dialing

108
455/459

Meet-me system

118
455/426.2

Wireless service for fixed premises equipment (e.g., wireless local loop (wll) telco emulator, etc.)

407
455/130

Receiver or analog modulated signal frequency converter

492
455/347

Cabinet, housing, or chassis structure

506
455/349

Sectional or interconnectable (e.g., modules)

255
455/351

Transportable

480
455/350

With particular speaker mounting

119
455/348

With retractable or readily detachable chassis

229
455/203

Carrier and single sideband

74
455/344

Combined with diverse art device

519
455/345

With vehicle

508
455/346

Detachable for portability

136
455/142

Convertible to different type (e.g., am to fm)

135
455/143

With distinct signal path for each type

87
455/144

With dual purpose amplifying or other stage

59
455/201

Exalted carrier

4
455/131

Frequency conversion between signal source (e.g., wave collector) and receiver

181
455/313

Frequency modifying or conversion

576
455/323

Particular frequency conversion structure or circuitry

927
455/331

Crystal or electron tube diode

52
455/324

Homodyne (i.e., zero beat or synchrodyne reception)

392
455/325

Including distributed electrical parameter structure

131
455/329

Electron beam tube

14
455/326

With balanced mixer

531
455/328

Hollow waveguide

85
455/327

Stripline

220
455/330

With nonlinear impedance (e.g., diode)

232
455/332

Push-pull

57
455/333

Transistor or integrated circuit

965
455/314

Plural separate successive conversions

209
455/315

With plural separate local oscillators

246
455/316

With frequency stabilization for at least one local oscillator

171
455/317

Unwanted oscillation or radiation prevention

184
455/318

With specified local oscillator structure or coupling

370
455/321

In a single envelope or with common active element (e.g., autodyne)

112
455/322

Plural common electrode

4
455/319

With particular coupling

132
455/320

Lumped impedance

21
455/205

Frequency or phase modulation

222
455/206

Responsive to one of overlapping signals

29
455/210

With carrier amplitude modulation elimination (e.g., specified limiter)

43
455/211

Combined with other function

14
455/214

With particular discriminator or detector

322
455/215

Superregenerative

19
455/216

With particular frequency division or multiplication

60
455/207

With plural conversion

111
455/212

With squelch or other audio output silencing

154
455/213

Using specified filter

97
455/208

With synchronized or controlled local oscillator

225
455/209

Plural local oscillators or mixers

254
455/230

Local control of receiver operation

109
455/231

Applied at or for specific intervals or periods of time

120
455/268

Fidelity control

7
455/232.1

Gain control

562
455/234.1

Automatic

696
455/245.1

Automatic gain control signal derived from information signal

304
455/245.2

Plural stages controlled

100
455/250.1

Automatic gain control to improve strong signal handling

230
455/248.1

Constant or controlled input impedance

45
455/235.1

Forward acting

63
455/239.1

Nonlinear automatic gain control

104
455/242.1

Delayed

40
455/242.2

Different delay for different signal stages or thresholds

26
455/243.1

Radio frequency stage only delayed

21
455/241.1

Different gain stages

118
455/244.1

Dual time constant

19
455/240.1

Variable automatic gain control loop gain

210
455/253.2

Plural amplifier stages

105
455/253.1

Plural stages controlled with plates, screen grids, or cathodes connected in parallel

14
455/251.1

Plural stages with different levels or bias to each stage (e.g., partial automatic gain control)

123
455/234.2

Processor controlled

202
455/237.1

Responsive to locally injected pilot

20
455/246.1

Responsive to plural inputs

81
455/247.1

Separate automatic gain control signals

87
455/238.1

Responsive to vehicle speed

68
455/252.1

Semiconductor

81
455/249.1

Variable attenuator type

176
455/236.1

Variable conversion efficiency (variable oscillator amplitude, etc.)

27
455/233.1

With diverse control (tone, etc.)

36
455/255

Local oscillator frequency control

370
455/257

Automatic

94
455/258

Utilizing particular local oscillator control

214
455/263

Discriminator or detector

68
455/259

Reference oscillator or source

157
455/260

Phase lock loop or frequency synthesizer

1142
455/261

Variable reactance (e.g., reactance tube)

19
455/262

Voltage controlled capacitor

60
455/264

Voltage control of oscillator

172
455/265

With local oscillator synchronization or locking

281
455/256

Combined with other control

60
455/266

Selectivity or bandwidth control

342
455/254

Sensitivity control

119
455/267

Tone control

31
455/226.1

Measuring or testing of receiver

1129
455/226.2

Signal strength

588
455/226.3

Signal-to-noise ratio

326
455/226.4

With meter or indicator

229
455/295

Modulation distortion or cross talk correction or elimination

329
455/296

Noise or interference elimination

1818
455/300

By shielding

139
455/301

Plural or compartmented shielding structure

101
455/302

Image frequency suppression

294
455/312

In demodulator or low frequency (e.g., audio frequency)

148
455/311

In radio frequency amplifier, intermediate frequency amplifier or converter circuit

226
455/297

In vehicle

103
455/310

Internally generated noise or oscillations

164
455/298

Originating in power supply

37
455/299

Filter or rectification in power supply energized by fluctuating or a.c. source

32
455/303

Using plural separate signal paths

374
455/304

Phase shift in at least one path

250
455/305

With balancing or neutralizing

118
455/306

Filter in at least one path

252
455/308

With amplitude limiter

64
455/309

In demodulator or low frequency (audio amplifier circuit)

50
455/307

With specific filter structure

740
455/145

Panoramic display

35
455/147

Particular local oscillator control

83
455/146

Plural separate paths or plural oscillators

45
455/148

With oscilloscope sweep signal derivation or control

15
455/149

Plural output (e.g., plural speakers) (not stereo)

29
455/132

Plural receivers

703
455/141

Including common stage (e.g., local oscillator)

77
455/140

Selectively actuated or controlled

165
455/137

With output combining

362
455/138

With control (e.g., automatic gain control)

169
455/139

Frequency or phase control

150
455/133

With output selecting

286
455/135

By signal quality (e.g., signal to noise ratio)

348
455/134

By signal strength

304
455/136

With control (e.g., automatic gain control, automatic frequency control, etc.)

250
455/352

Remote control of receiver

214
455/355

Amplitude, volume, or gain control

55
455/353

Plural conditions from remote station

54
455/354

Mechanical

8
455/227

Responsive to an input signal of particular predetermined frequency

118
455/229

Responsive to carrier absence or presence

68
455/228

Responsive to specified modulation (e.g., call alarm, conelrad)

119
455/150.1

Signal selection based on frequency (e.g., tuning)

265
455/188.1

Band selection

254
455/188.2

Uhf and vhf

114
455/190.1

With frequency conversion

149
455/189.1

With plural separate mixer or converter circuits

189
455/191.1

With plurality of tuned circuits

112
455/191.2

Varactor tuned

61
455/191.3

With switching between stages

34
455/179.1

Channel or station selection

214
455/180.1

Combined with band selection

192
455/180.2

Uhf and vhf

118
455/180.4

Varactor tuned (e.g., varactor diode)

71
455/180.3

With phase locked loop (pll) tuning

160
455/182.3

Fine tuning

164
455/187.1

Separate tuned circuits for each channel or station

44
455/181.1

Time controlled

106
455/185.1

With channel information storage

210
455/186.1

With memory control or programming

711
455/186.2

Having a keyboard

133
455/184.1

With comparing desired and existing tuning conditions

185
455/182.1

With frequency control

133
455/182.2

Automatic (afc)

224
455/183.1

With frequency synthesizer

291
455/183.2

Processor controlled

127
455/161.1

Frequency scanning

269
455/162.1

Motor activated

6
455/163.1

Reversible motor (e.g., end-stop control)

3
455/168.1

Multiband

218
455/161.3

Using signal strength or quality

232
455/164.1

With automatic frequency control

113
455/164.2

Processor controlled (afc)

71
455/166.1

With channel skipping selection

146
455/166.2

With priority channel selection

119
455/167.1

With dual sweeping

14
455/165.1

With frequency synthesizer

187
455/169.1

With particular variable voltage or current tuning

58
455/169.2

With varactor diode

22
455/161.2

With processor control

153
455/196.1

Including variation of local oscillator frequency

131
455/197.1

By simultaneous control with signal selection

54
455/199.1

Discrete frequency types (e.g., channel switching)

17
455/198.1

Including distributed parameter control device

10
455/197.2

Variable capacitor tuned

35
455/197.3

Including additional tuning circuit

12
455/160.1

Plural tuning modes (e.g., manual and scanning, etc.)

77
455/151.1

Remote control of channel or station selection

102
455/153.1

Mechanical

6
455/153.2

With wired link

11
455/152.1

Of or combined with vehicle receiver

83
455/151.4

Plural electronic devices controlled

54
455/151.3

Remote oscillator tuned

9
455/151.2

Wireless link (sonic, rf, or infrared)

181
455/195.1

Variable voltage or current tuning

152
455/193.1

With antenna circuit tuning

214
455/193.3

Including varactor diode

45
455/193.2

With plural resonant circuits

57
455/192.1

With frequency control

140
455/192.2

Automatic (afc)

310
455/192.3

Fine tuning

103
455/154.1

With indication of frequency, channel, or selector condition (e.g., tuning aid)

157
455/157.1

Analog frequency indication (e.g., dial)

13
455/157.2

With light indication or bar type

30
455/156.1

Audible indicator

46
455/155.1

By meter

23
455/158.1

Channel index indication

64
455/158.5

Non-numeric display (e.g., call letters)

53
455/158.2

With electronic digital indication

74
455/158.3

Using a counter

57
455/158.4

With multiple display functions

114
455/154.2

Scanning display

76
455/159.1

Variable light indication

32
455/159.2

Plural lamps

27
455/170.1

With mechanical or electromechanical selection

27
455/176.1

Combined with band selection

70
455/177.1

Combined with other control (e.g., bandwidth, volume, gain, etc.)

38
455/171.1

Time actuated

24
455/172.1

Including a motor

3
455/173.1

With automatic frequency control of fine tuning

58
455/175.1

With carrier wave preset

22
455/174.1

With muting (e.g., silent tuning)

21
455/178.1

With plurality of tunable circuits

47
455/194.1

With muting (e.g., silent tuning)

78
455/194.2

Amplifier controlled

47
455/200.1

With other control (e.g., volume, gain, bandwidth, etc.)

149
455/218

Squelch

105
455/220

Adjustable

46
455/221

Audio responsive

55
455/222

Noise controlled

197
455/223

Short duration (noise blankers)

104
455/224

Separate broadband detector channel

30
455/225

Plural paths

65
455/219

With automatic gain or volume control

90
455/202

Suppressed carrier

48
455/204

Vestigial sideband

48
455/334

With particular receiver circuit

460
455/341

Amplifier

238
455/342

Reflex type

23
455/338

Coupling or decoupling between stages

107
455/339

Band pass filter

308
455/340

Variably tunable or adjustable

283
455/337

Discriminator or demodulator

247
455/343.1

Having particular power or bias supply (including self-powered or battery saving means)

941
455/343.6

Back-up power supply

106
455/343.5

Battery saving based on detected power source level

289
455/343.2

Battery saving based on received signal

607
455/343.3

Based on identification

215
455/343.4

Based on schedule information

288
455/335

Plural diverse function tube or stage (performs plural functions alternately or concurrently)

23
455/336

Superregenerative detector or discriminator

71
455/217

With protection circuit for receiver circuit

83
455/269

With wave collector (e.g., antenna)

176
455/272

Plural separate collectors

344
455/278.1

Combined with noise or interference elimination

457
455/279.1

Plural antenna currents entering single transformer

71
455/277.1

Selectively or alternately connected to receiver

594
455/277.2

By signal quality (e.g., noise)

382
455/275

With frequency changing or selecting in the output path of one or more collectors

91
455/273

With particular output combining

280
455/274

Loop or coil antenna

41
455/276.1

With phase shifting, correcting, or regulating in the output path of one or more collectors

296
455/270

Power-line or receiver element used as wave collector

27
455/271

Suppression of radiation from receiver via wave collector

23
455/280

With coupling to a stage of the receiver

160
455/281

Having distributed parameters

43
455/282

Transmission line

71
455/290

Including passive tuned circuit

48
455/293

Specified stage (e.g., mixer, amplifier, or demodulator)

189
455/294

With particular electron tube structure

6
455/292

Transformer or other passive inductance

84
455/283

Undesired signal or noise control (e.g., antistatic)

140
455/284

Balancing or cancelling

74
455/288

Particular composition (e.g., of cell or element)

8
455/287

Shunt or bypass

24
455/286

Wave filter, coil, or wave trap

72
455/285

With image frequency suppression

109
455/291

Using active device (e.g., as preamplifier or reactance)

60
455/289

With coupling varying, regulating, or control

76
455/73

Transmitter and receiver at same station (e.g., transceiver)

1215
455/74

Convertible (e.g., to diverse art device)

199
455/74.1

Cordless/corded conversion

176
455/90.1

Having particular application (e.g., avalanche victim assistance) of a transceiver

587
455/90.2

Having particular configuration (e.g., c.b., or walkie-talkie) of a transceiver

450
455/90.3

Having particular housing or support of a transceiver

1481
455/550.1

Radiotelephone equipment detail

3933
455/564

Auto-dialing or repertory dialing (e.g., using bar code, etc.)

545
455/561

Base station detail

2137
455/562.1

Having specific antenna arrangement

2314
455/567

Call alerting

1195
455/554.2

Equipment detail for providing wireless link to fixed equipment (e.g., wll, telco emulator, etc.)

172
455/569.1

Hands-free or loudspeaking arrangement

945
455/569.2

In vehicle

564
455/570

Noise suppression or echo cancellation

358
455/566

Having display

3163
455/563

Having voice recognition or synthesization

483
455/575.1

Housing or support

2832
455/575.5

Antenna shielding

278
455/575.6

Attached or connected to user

255
455/575.3

Foldable type

1303
455/575.7

Having specific antenna arrangement

963
455/575.2

Headgear

518
455/575.9

In vehicle

333
455/575.8

Protective cover

564
455/575.4

Slidable type

1063
455/556.1

Integrated with other device

2555
455/556.2

Personal digitial assistant

928
455/557

Interface attached device (e.g., interface with modem, facsimile, computer, etc.)

2459
455/558

Card control element

1319
455/559

Smart cable

84
455/551

Number assignment module (nam) detail

307
455/552.1

Operable on more than one system

2829
455/553.1

Radiotelephone having plural transceivers (e.g., for analog and digital, trunking and cellular, etc.)

1306
455/571

Power booster

204
455/572

Power supply

995
455/573

Battery charging

607
455/574

Power conservation

2345
455/554.1

Remote private branch exchange (pbx) with wireless link to landline

236
455/565

Restrictive dialing circuitry

245
455/560

Switching unit detail (e.g., mobile telephone switching office (mtso), base station controller (bsc), etc.)

1036
455/555

Wireless private branch exchange (pbx) (i.e., wireless link to extension unit)

347
455/88

Transceiver controlling a separate transceiver or receiver

451
455/84

With a common signal processing stage

299
455/85

Transmitter oscillator used as detector

71
455/86

Transmitter oscillator used as local oscillator

300
455/87

Tunable or variable

123
455/75

With frequency stabilization (e.g., automatic frequency control)

233
455/76

Synthesizer

685
455/78

With transmitter-receiver switching or interaction prevention

1033
455/79

Automatic (e.g., voice operated)

143
455/82

Common antenna

396
455/80

With distributed parameter coupling

158
455/81

Waveguide

80
455/83

Single antenna switched between transmitter and receiver

600
455/77

With tuning

304
455/39

Transmitter and receiver at separate stations

431
455/63.1

Distortion, noise, or other interference prevention, reduction, or compensation

2734
455/65

Anti-multipath

332
455/63.4

Directional antenna

467
455/63.3

Frequency switching

236
455/64

Plasma source or barrier

14
455/63.2

System with hierarchical coverage areas

91
455/40

Earth or water medium

102
455/42

Frequency or phase modulation

277
455/45

Via subcarrier

229
455/43

With modification of frequencies of analog signal passed (e.g., pre-emphasis and de-emphasis)

77
455/44

With stated modulation index

45
455/66.1

Having diverse art device

594
455/67.11

Having measuring, testing, or monitoring of system or part

3993
455/67.13

Noise, distortion, or unwanted signal detection (e.g., quality control, etc.)

1938
455/67.15

Of a microwave link or system

123
455/67.16

Phase measuring (e.g., group delay, propagation effect, etc.)

475
455/67.12

Using a chamber (e.g., room testing or audio surveillance, etc.)

117
455/67.14

Using a test signal

702
455/67.7

With indication (e.g., visual or voice signalling, etc.)

344
455/48

Inverted sideband

12
455/41.1

Near field (i.e., inductive or capacitive coupling)

1340
455/62

Optimum frequency selection

649
455/500

Plural transmitters or receivers (i.e., more than two stations)

841
455/527

Break-in or priority override

87
455/507

Central station (e.g., master, etc.)

487
455/509

Channel allocation

1700
455/512

Based on priority

458
455/511

Control channel/voice channel conversion

151
455/514

Having storage detail

159
455/510

Plural requests (e.g., retries)

174
455/513

Ranking (e.g., based on signal strength, etc.)

496
455/516

Channel seizing

259
455/515

Control channel monitoring (i.e., paging or access channel signaling) for system access

934
455/508

Having console

64
455/526

Plural receivers tuned to common frequency

127
455/517

To or from mobile station

1750
455/521

Emergency dispatch or response

426
455/518

Having talk group

1208
455/520

On-site or multi-site trunking

238
455/519

Talk group forming (e.g., dynamic regrouping, talk group assignment)

883
455/524

Multiple base stations

737
455/525

Base station selection

696
455/522

Transmission power control technique

4296
455/523

Using radiating transmission line

104
455/528

Lockout or busy-idle signaling

145
455/501

Noise, distortion, or singing reduction

695
455/504

Fading compensation

285
455/505

Due to weather

66
455/506

Rayleigh or multipath fading

277
455/502

Synchronized stations

1171
455/503

Simulcast system

366
455/41.2

Short range rf communication

3616
455/41.3

To output device

687
455/59

Single message via plural carrier wave transmission

273
455/60

Different phases of same frequency carrier

117
455/61

Single message via plural modulation of single carrier

83
455/47

Single or vestigial sideband system

106
455/46

Suppressed carrier wave system

59
455/68

With control signal

575
455/70

Receiver control signal originates at message transmitter

486
455/72

For compression and expansion of message signal (i.e., companding)

210
455/71

Frequency control

151
455/701

Tone coded squelch

89
455/702

Plural tones

50
455/703

Difference frequency

29
455/69

Transmitter controlled by signal feedback from receiver

3004
455/91

Transmitter

628
455/94

Alternator

2
455/108

Amplitude modulation

409
455/109

Vestigial or single sideband or suppressed carrier

137
455/110

Angle modulation

251
455/111

Including distributed parameter structure

32
455/113

With frequency control

192
455/112

With frequency multiplication or division

140
455/116

Carrier amplitude control (e.g., voice operated on/off)

206
455/119

Carrier frequency stabilization

170
455/93

Convertible to different type (e.g., am to fm)

105
455/101

Diversity

1479
455/118

Frequency conversion

460
455/114.1

Having harmonic radiation suppression

161
455/120

Including tuning

104
455/125

Automatic adjustment of tuning

158
455/124

Distributed parameter device

36
455/121

In antenna circuit

215
455/123

Automatically controlled

120
455/122

With saturable reactor

5
455/115.1

Measuring, testing, or monitoring of transmitter

1047
455/115.4

Having meter or indicator

117
455/115.3

Signal strength

320
455/115.2

Using a test signal

208
455/95

Mobile or portable

239
455/100

Body attached or connected

274
455/96

Transmitter ejected from moving vehicle

50
455/98

With aircraft, satellite, or projectile

148
455/97

With antenna ejection or external support

49
455/99

With vehicle

259
455/106

Modulation by absorption, shielding, or reflecting

119
455/114.2

Noise or interference elimination

798
455/114.3

Predistortion (e.g., for power amplifier)

648
455/102

Plural modulation

534
455/103

Plural separate transmitters or channels

712
455/104

Carrier and sidebands separately transmitted

62
455/105

Common frequency

67
455/127.1

Power control, power supply, or bias voltage supply

1738
455/127.4

Dual mode (e.g., analog and digital)

214
455/127.2

Gain control

758
455/127.3

Plural amplifier stages

373
455/127.5

Power conservation

478
455/92

Remote control of a transmitter

140
455/128

With casing or housing

295
455/129

With coupled antenna

416
455/117

With electrical protection of transmitter circuit or operator

223
455/126

With feedback of modulated output signal

1247
455/107

With variation of antenna impedance or dimension for modulation

121
455/26.1

Use or access blocking (e.g., locking switch)

124
455/3.01

Wireless distribution system

910
455/3.06

Combined with diverse art device (e.g., audio/sound or entertainment system)

961
455/3.02

Receiver for satellite broadcast

707
455/3.03

Remote control of distribution

294
455/3.04

With subscriber selection or switching

285
455/3.05

Two-way

321
 
 
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