| Class Number |
Class Name |
No. of Patents |
| 455/2.01 |
Audience survey or program distribution use accounting |
102 |
| 455/7 |
Carrier wave repeater or relay system (i.e., retransmission of same information) |
192 |
| 455/19 |
Common antenna |
42 |
| 455/25 |
Directive antenna |
189 |
| 455/8 |
Failure compensation (e.g., spare channel) |
144 |
| 455/23 |
Frequency or phase modulation |
67 |
| 455/9 |
Monitoring |
251 |
| 455/10 |
Fading compensation |
109 |
| 455/17 |
Plural modulated carriers |
159 |
| 455/11.1 |
Portable or mobile repeater |
624 |
| 455/12.1 |
Space satellite |
1142 |
| 455/13.4 |
Power control |
360 |
| 455/13.3 |
With antenna feed network or multiple antenna switching |
235 |
| 455/13.1 |
With plural repeater or relay systems |
480 |
| 455/13.2 |
With synchronizing of satellites or system |
304 |
| 455/24 |
Transmitter/receiver feedback compensation |
98 |
| 455/15 |
Two separate way transmission |
167 |
| 455/16 |
Simultaneous using plural repeaters at each location |
109 |
| 455/18 |
With delay or recording |
95 |
| 455/20 |
With frequency conversion |
145 |
| 455/22 |
Plural conversion stages |
81 |
| 455/21 |
With demodulator |
54 |
| 455/14 |
With transmission line |
97 |
| 455/400 |
Having single-channel telephone carrier |
19 |
| 455/401 |
Including call signaling (e.g., ringing, off-hook, dialing) |
66 |
| 455/402 |
Over power line |
134 |
| 455/1 |
Interference signal transmission (e.g., jamming) |
192 |
| 455/899 |
Miscellaneous |
37 |
| 455/403 |
Radiotelephone system |
676 |
| 455/466 |
Auxiliary data signaling (e.g., short message service (sms)) |
1381 |
| 455/404.1 |
Emergency or alarm communication |
527 |
| 455/404.2 |
Location monitoring |
627 |
| 455/461 |
Including personal numbering system (i.e., intelligent network for subscriber tracking or follow-me subscriber feature) |
400 |
| 455/462 |
Including private cordless extension system |
514 |
| 455/464 |
Channel selection or allocation |
355 |
| 455/463 |
Multi-users |
202 |
| 455/465 |
Including public cordless extension system |
215 |
| 455/412.1 |
Message storage or retrieval |
1027 |
| 455/412.2 |
Having message notification |
496 |
| 455/413 |
Voice mail |
410 |
| 455/421 |
Out-of-range indication |
226 |
| 455/418 |
Programming control |
1167 |
| 455/419 |
Remote programming control |
868 |
| 455/420 |
Control of another apparatus |
561 |
| 455/410 |
Security or fraud prevention |
969 |
| 455/411 |
Privacy, lock-out, or authentication |
1255 |
| 455/414.1 |
Special service |
1817 |
| 455/416 |
Call conferencing |
263 |
| 455/417 |
Call diversion |
499 |
| 455/415 |
Caller identification |
504 |
| 455/414.2 |
User location independent information retrieval |
449 |
| 455/414.3 |
Based on request (e.g., news, weather, etc.) |
276 |
| 455/414.4 |
Format conversion (e.g., text, audio, etc.) |
207 |
| 455/405 |
Usage measurement |
409 |
| 455/406 |
Billing |
766 |
| 455/408 |
At remote station |
361 |
| 455/407 |
At subscriber unit |
294 |
| 455/409 |
Rental |
82 |
| 455/422.1 |
Zoned or cellular telephone system |
1275 |
| 455/431 |
Airborne or aircraft |
257 |
| 455/445 |
Call routing (e.g., to prevent backhaul, routing efficiency, least cost, or alternate routing) |
1527 |
| 455/450 |
Channel allocation |
1987 |
| 455/452.1 |
Dynamic allocation |
867 |
| 455/452.2 |
Based on service quality (e.g., bandwidth, etc.) |
830 |
| 455/451 |
Hybrid allocation |
193 |
| 455/453 |
Load balancing |
787 |
| 455/454 |
Spectrum sharing for different type of system (e.g., point-to-point microwave, television, etc.) |
177 |
| 455/455 |
Channel seizing |
279 |
| 455/434 |
Control or access channel scanning |
810 |
| 455/423 |
Diagnostic testing, malfunction indication, or electrical condition measurement |
1103 |
| 455/425 |
Subscriber equipment |
448 |
| 455/424 |
System equipment |
553 |
| 455/436 |
Handoff |
2152 |
| 455/440 |
Based upon unit location |
445 |
| 455/441 |
Based upon unit velocity |
199 |
| 455/444 |
Between macro and micro cells |
247 |
| 455/439 |
Handoff initiated by another source (e.g., target, user initiated, mobile switching center (msc), or mobile telephone switching office (mtso), etc.) |
594 |
| 455/437 |
Mobile assisted or initiated |
857 |
| 455/443 |
Overlapping cells |
292 |
| 455/438 |
Serving site initiated |
414 |
| 455/442 |
Soft handoff |
814 |
| 455/446 |
Including cell planning or layout |
636 |
| 455/448 |
Co-located systems |
162 |
| 455/447 |
Frequency reuse scheme |
400 |
| 455/449 |
Hierarchical cell structure |
173 |
| 455/426.1 |
Including other radio communication system (e.g., cordless telephone, paging, trunking, etc.) |
990 |
| 455/456.1 |
Location monitoring |
2110 |
| 455/456.6 |
At remote station (i.e., mobile station) |
531 |
| 455/456.5 |
At system equipment (i.e., base station) |
601 |
| 455/456.2 |
Based on request signal |
639 |
| 455/457 |
Location display |
491 |
| 455/456.3 |
Position based personal service |
789 |
| 455/456.4 |
Quiet or transmission prevention mode |
162 |
| 455/435.1 |
Registration |
1075 |
| 455/435.2 |
System selection |
445 |
| 455/435.3 |
Based on priority |
162 |
| 455/432.1 |
Roaming |
1002 |
| 455/433 |
Home location registration (hlr) or visitor location registration (vlr) detail |
1102 |
| 455/432.3 |
Service profile |
312 |
| 455/432.2 |
System format conversion |
211 |
| 455/427 |
Space satellite |
694 |
| 455/429 |
Cell projection |
160 |
| 455/430 |
Ground station control |
246 |
| 455/428 |
Switching or routing |
515 |
| 455/458 |
Specific paging technique |
555 |
| 455/460 |
Auto-dialing |
74 |
| 455/459 |
Meet-me system |
82 |
| 455/426.2 |
Wireless service for fixed premises equipment (e.g., wireless local loop (wll) telco emulator, etc.) |
257 |
| 455/130 |
Receiver or analog modulated signal frequency converter |
202 |
| 455/347 |
Cabinet, housing, or chassis structure |
360 |
| 455/349 |
Sectional or interconnectable (e.g., modules) |
215 |
| 455/351 |
Transportable |
463 |
| 455/350 |
With particular speaker mounting |
100 |
| 455/348 |
With retractable or readily detachable chassis |
201 |
| 455/203 |
Carrier and single sideband |
66 |
| 455/344 |
Combined with diverse art device |
393 |
| 455/345 |
With vehicle |
400 |
| 455/346 |
Detachable for portability |
117 |
| 455/142 |
Convertible to different type (e.g., am to fm) |
97 |
| 455/143 |
With distinct signal path for each type |
64 |
| 455/144 |
With dual purpose amplifying or other stage |
41 |
| 455/201 |
Exalted carrier |
1 |
| 455/131 |
Frequency conversion between signal source (e.g., wave collector) and receiver |
118 |
| 455/313 |
Frequency modifying or conversion |
371 |
| 455/323 |
Particular frequency conversion structure or circuitry |
532 |
| 455/331 |
Crystal or electron tube diode |
38 |
| 455/324 |
Homodyne (i.e., zero beat or synchrodyne reception) |
301 |
| 455/325 |
Including distributed electrical parameter structure |
108 |
| 455/329 |
Electron beam tube |
4 |
| 455/326 |
With balanced mixer |
389 |
| 455/328 |
Hollow waveguide |
72 |
| 455/327 |
Stripline |
209 |
| 455/330 |
With nonlinear impedance (e.g., diode) |
211 |
| 455/332 |
Push-pull |
46 |
| 455/333 |
Transistor or integrated circuit |
621 |
| 455/314 |
Plural separate successive conversions |
166 |
| 455/315 |
With plural separate local oscillators |
204 |
| 455/316 |
With frequency stabilization for at least one local oscillator |
147 |
| 455/317 |
Unwanted oscillation or radiation prevention |
139 |
| 455/318 |
With specified local oscillator structure or coupling |
260 |
| 455/321 |
In a single envelope or with common active element (e.g., autodyne) |
108 |
| 455/322 |
Plural common electrode |
2 |
| 455/319 |
With particular coupling |
106 |
| 455/320 |
Lumped impedance |
9 |
| 455/205 |
Frequency or phase modulation |
140 |
| 455/206 |
Responsive to one of overlapping signals |
22 |
| 455/210 |
With carrier amplitude modulation elimination (e.g., specified limiter) |
33 |
| 455/211 |
Combined with other function |
11 |
| 455/214 |
With particular discriminator or detector |
285 |
| 455/215 |
Superregenerative |
16 |
| 455/216 |
With particular frequency division or multiplication |
38 |
| 455/207 |
With plural conversion |
79 |
| 455/212 |
With squelch or other audio output silencing |
143 |
| 455/213 |
Using specified filter |
63 |
| 455/208 |
With synchronized or controlled local oscillator |
160 |
| 455/209 |
Plural local oscillators or mixers |
194 |
| 455/230 |
Local control of receiver operation |
48 |
| 455/231 |
Applied at or for specific intervals or periods of time |
82 |
| 455/268 |
Fidelity control |
5 |
| 455/232.1 |
Gain control |
323 |
| 455/234.1 |
Automatic |
472 |
| 455/245.1 |
Automatic gain control signal derived from information signal |
223 |
| 455/245.2 |
Plural stages controlled |
69 |
| 455/250.1 |
Automatic gain control to improve strong signal handling |
164 |
| 455/248.1 |
Constant or controlled input impedance |
22 |
| 455/235.1 |
Forward acting |
53 |
| 455/239.1 |
Nonlinear automatic gain control |
79 |
| 455/242.1 |
Delayed |
27 |
| 455/242.2 |
Different delay for different signal stages or thresholds |
20 |
| 455/243.1 |
Radio frequency stage only delayed |
13 |
| 455/241.1 |
Different gain stages |
77 |
| 455/244.1 |
Dual time constant |
17 |
| 455/240.1 |
Variable automatic gain control loop gain |
142 |
| 455/253.2 |
Plural amplifier stages |
69 |
| 455/253.1 |
Plural stages controlled with plates, screen grids, or cathodes connected in parallel |
9 |
| 455/251.1 |
Plural stages with different levels or bias to each stage (e.g., partial automatic gain control) |
86 |
| 455/234.2 |
Processor controlled |
133 |
| 455/237.1 |
Responsive to locally injected pilot |
16 |
| 455/246.1 |
Responsive to plural inputs |
61 |
| 455/247.1 |
Separate automatic gain control signals |
58 |
| 455/238.1 |
Responsive to vehicle speed |
43 |
| 455/252.1 |
Semiconductor |
52 |
| 455/249.1 |
Variable attenuator type |
157 |
| 455/236.1 |
Variable conversion efficiency (variable oscillator amplitude, etc.) |
17 |
| 455/233.1 |
With diverse control (tone, etc.) |
25 |
| 455/255 |
Local oscillator frequency control |
233 |
| 455/257 |
Automatic |
70 |
| 455/258 |
Utilizing particular local oscillator control |
141 |
| 455/263 |
Discriminator or detector |
56 |
| 455/259 |
Reference oscillator or source |
114 |
| 455/260 |
Phase lock loop or frequency synthesizer |
900 |
| 455/261 |
Variable reactance (e.g., reactance tube) |
13 |
| 455/262 |
Voltage controlled capacitor |
42 |
| 455/264 |
Voltage control of oscillator |
144 |
| 455/265 |
With local oscillator synchronization or locking |
228 |
| 455/256 |
Combined with other control |
34 |
| 455/266 |
Selectivity or bandwidth control |
255 |
| 455/254 |
Sensitivity control |
88 |
| 455/267 |
Tone control |
26 |
| 455/226.1 |
Measuring or testing of receiver |
666 |
| 455/226.2 |
Signal strength |
375 |
| 455/226.3 |
Signal-to-noise ratio |
201 |
| 455/226.4 |
With meter or indicator |
189 |
| 455/295 |
Modulation distortion or cross talk correction or elimination |
241 |
| 455/296 |
Noise or interference elimination |
953 |
| 455/300 |
By shielding |
113 |
| 455/301 |
Plural or compartmented shielding structure |
73 |
| 455/302 |
Image frequency suppression |
204 |
| 455/312 |
In demodulator or low frequency (e.g., audio frequency) |
117 |
| 455/311 |
In radio frequency amplifier, intermediate frequency amplifier or converter circuit |
146 |
| 455/297 |
In vehicle |
77 |
| 455/310 |
Internally generated noise or oscillations |
111 |
| 455/298 |
Originating in power supply |
25 |
| 455/299 |
Filter or rectification in power supply energized by fluctuating or a.c. source |
16 |
| 455/303 |
Using plural separate signal paths |
301 |
| 455/304 |
Phase shift in at least one path |
203 |
| 455/305 |
With balancing or neutralizing |
98 |
| 455/306 |
Filter in at least one path |
180 |
| 455/308 |
With amplitude limiter |
55 |
| 455/309 |
In demodulator or low frequency (audio amplifier circuit) |
36 |
| 455/307 |
With specific filter structure |
440 |
| 455/145 |
Panoramic display |
14 |
| 455/147 |
Particular local oscillator control |
48 |
| 455/146 |
Plural separate paths or plural oscillators |
14 |
| 455/148 |
With oscilloscope sweep signal derivation or control |
13 |
| 455/149 |
Plural output (e.g., plural speakers) (not stereo) |
15 |
| 455/132 |
Plural receivers |
299 |
| 455/141 |
Including common stage (e.g., local oscillator) |
50 |
| 455/140 |
Selectively actuated or controlled |
104 |
| 455/137 |
With output combining |
252 |
| 455/138 |
With control (e.g., automatic gain control) |
105 |
| 455/139 |
Frequency or phase control |
106 |
| 455/133 |
With output selecting |
196 |
| 455/135 |
By signal quality (e.g., signal to noise ratio) |
213 |
| 455/134 |
By signal strength |
197 |
| 455/136 |
With control (e.g., automatic gain control, automatic frequency control, etc.) |
148 |
| 455/352 |
Remote control of receiver |
168 |
| 455/355 |
Amplitude, volume, or gain control |
42 |
| 455/353 |
Plural conditions from remote station |
51 |
| 455/354 |
Mechanical |
4 |
| 455/227 |
Responsive to an input signal of particular predetermined frequency |
84 |
| 455/229 |
Responsive to carrier absence or presence |
49 |
| 455/228 |
Responsive to specified modulation (e.g., call alarm, conelrad) |
108 |
| 455/150.1 |
Signal selection based on frequency (e.g., tuning) |
138 |
| 455/188.1 |
Band selection |
170 |
| 455/188.2 |
Uhf and vhf |
102 |
| 455/190.1 |
With frequency conversion |
120 |
| 455/189.1 |
With plural separate mixer or converter circuits |
151 |
| 455/191.1 |
With plurality of tuned circuits |
83 |
| 455/191.2 |
Varactor tuned |
49 |
| 455/191.3 |
With switching between stages |
25 |
| 455/179.1 |
Channel or station selection |
138 |
| 455/180.1 |
Combined with band selection |
158 |
| 455/180.2 |
Uhf and vhf |
100 |
| 455/180.4 |
Varactor tuned (e.g., varactor diode) |
59 |
| 455/180.3 |
With phase locked loop (pll) tuning |
116 |
| 455/182.3 |
Fine tuning |
144 |
| 455/187.1 |
Separate tuned circuits for each channel or station |
20 |
| 455/181.1 |
Time controlled |
81 |
| 455/185.1 |
With channel information storage |
155 |
| 455/186.1 |
With memory control or programming |
627 |
| 455/186.2 |
Having a keyboard |
120 |
| 455/184.1 |
With comparing desired and existing tuning conditions |
159 |
| 455/182.1 |
With frequency control |
86 |
| 455/182.2 |
Automatic (afc) |
189 |
| 455/183.1 |
With frequency synthesizer |
254 |
| 455/183.2 |
Processor controlled |
104 |
| 455/161.1 |
Frequency scanning |
155 |
| 455/162.1 |
Motor activated |
4 |
| 455/163.1 |
Reversible motor (e.g., end-stop control) |
2 |
| 455/168.1 |
Multiband |
141 |
| 455/161.3 |
Using signal strength or quality |
153 |
| 455/164.1 |
With automatic frequency control |
86 |
| 455/164.2 |
Processor controlled (afc) |
51 |
| 455/166.1 |
With channel skipping selection |
126 |
| 455/166.2 |
With priority channel selection |
81 |
| 455/167.1 |
With dual sweeping |
10 |
| 455/165.1 |
With frequency synthesizer |
148 |
| 455/169.1 |
With particular variable voltage or current tuning |
47 |
| 455/169.2 |
With varactor diode |
20 |
| 455/161.2 |
With processor control |
122 |
| 455/196.1 |
Including variation of local oscillator frequency |
100 |
| 455/197.1 |
By simultaneous control with signal selection |
50 |
| 455/199.1 |
Discrete frequency types (e.g., channel switching) |
12 |
| 455/198.1 |
Including distributed parameter control device |
6 |
| 455/197.2 |
Variable capacitor tuned |
24 |
| 455/197.3 |
Including additional tuning circuit |
8 |
| 455/160.1 |
Plural tuning modes (e.g., manual and scanning, etc.) |
38 |
| 455/151.1 |
Remote control of channel or station selection |
70 |
| 455/153.1 |
Mechanical |
5 |
| 455/153.2 |
With wired link |
8 |
| 455/152.1 |
Of or combined with vehicle receiver |
55 |
| 455/151.4 |
Plural electronic devices controlled |
46 |
| 455/151.3 |
Remote oscillator tuned |
4 |
| 455/151.2 |
Wireless link (sonic, rf, or infrared) |
140 |
| 455/195.1 |
Variable voltage or current tuning |
137 |
| 455/193.1 |
With antenna circuit tuning |
126 |
| 455/193.3 |
Including varactor diode |
35 |
| 455/193.2 |
With plural resonant circuits |
38 |
| 455/192.1 |
With frequency control |
90 |
| 455/192.2 |
Automatic (afc) |
256 |
| 455/192.3 |
Fine tuning |
88 |
| 455/154.1 |
With indication of frequency, channel, or selector condition (e.g., tuning aid) |
105 |
| 455/157.1 |
Analog frequency indication (e.g., dial) |
13 |
| 455/157.2 |
With light indication or bar type |
25 |
| 455/156.1 |
Audible indicator |
35 |
| 455/155.1 |
By meter |
18 |
| 455/158.1 |
Channel index indication |
50 |
| 455/158.5 |
Non-numeric display (e.g., call letters) |
40 |
| 455/158.2 |
With electronic digital indication |
70 |
| 455/158.3 |
Using a counter |
55 |
| 455/158.4 |
With multiple display functions |
77 |
| 455/154.2 |
Scanning display |
52 |
| 455/159.1 |
Variable light indication |
28 |
| 455/159.2 |
Plural lamps |
27 |
| 455/170.1 |
With mechanical or electromechanical selection |
23 |
| 455/176.1 |
Combined with band selection |
50 |
| 455/177.1 |
Combined with other control (e.g., bandwidth, volume, gain, etc.) |
24 |
| 455/171.1 |
Time actuated |
14 |
| 455/172.1 |
Including a motor |
3 |
| 455/173.1 |
With automatic frequency control of fine tuning |
38 |
| 455/175.1 |
With carrier wave preset |
20 |
| 455/174.1 |
With muting (e.g., silent tuning) |
19 |
| 455/178.1 |
With plurality of tunable circuits |
25 |
| 455/194.1 |
With muting (e.g., silent tuning) |
74 |
| 455/194.2 |
Amplifier controlled |
28 |
| 455/200.1 |
With other control (e.g., volume, gain, bandwidth, etc.) |
132 |
| 455/218 |
Squelch |
90 |
| 455/220 |
Adjustable |
28 |
| 455/221 |
Audio responsive |
46 |
| 455/222 |
Noise controlled |
153 |
| 455/223 |
Short duration (noise blankers) |
95 |
| 455/224 |
Separate broadband detector channel |
21 |
| 455/225 |
Plural paths |
43 |
| 455/219 |
With automatic gain or volume control |
70 |
| 455/202 |
Suppressed carrier |
43 |
| 455/204 |
Vestigial sideband |
39 |
| 455/334 |
With particular receiver circuit |
221 |
| 455/341 |
Amplifier |
121 |
| 455/342 |
Reflex type |
13 |
| 455/338 |
Coupling or decoupling between stages |
67 |
| 455/339 |
Band pass filter |
199 |
| 455/340 |
Variably tunable or adjustable |
212 |
| 455/337 |
Discriminator or demodulator |
193 |
| 455/343.1 |
Having particular power or bias supply (including self-powered or battery saving means) |
486 |
| 455/343.6 |
Back-up power supply |
73 |
| 455/343.5 |
Battery saving based on detected power source level |
145 |
| 455/343.2 |
Battery saving based on received signal |
299 |
| 455/343.3 |
Based on identification |
111 |
| 455/343.4 |
Based on schedule information |
155 |
| 455/335 |
Plural diverse function tube or stage (performs plural functions alternately or concurrently) |
12 |
| 455/336 |
Superregenerative detector or discriminator |
42 |
| 455/217 |
With protection circuit for receiver circuit |
70 |
| 455/269 |
With wave collector (e.g., antenna) |
110 |
| 455/272 |
Plural separate collectors |
193 |
| 455/278.1 |
Combined with noise or interference elimination |
287 |
| 455/279.1 |
Plural antenna currents entering single transformer |
42 |
| 455/277.1 |
Selectively or alternately connected to receiver |
437 |
| 455/277.2 |
By signal quality (e.g., noise) |
275 |
| 455/275 |
With frequency changing or selecting in the output path of one or more collectors |
60 |
| 455/273 |
With particular output combining |
208 |
| 455/274 |
Loop or coil antenna |
20 |
| 455/276.1 |
With phase shifting, correcting, or regulating in the output path of one or more collectors |
223 |
| 455/270 |
Power-line or receiver element used as wave collector |
21 |
| 455/271 |
Suppression of radiation from receiver via wave collector |
15 |
| 455/280 |
With coupling to a stage of the receiver |
100 |
| 455/281 |
Having distributed parameters |
30 |
| 455/282 |
Transmission line |
52 |
| 455/290 |
Including passive tuned circuit |
34 |
| 455/293 |
Specified stage (e.g., mixer, amplifier, or demodulator) |
97 |
| 455/294 |
With particular electron tube structure |
5 |
| 455/292 |
Transformer or other passive inductance |
47 |
| 455/283 |
Undesired signal or noise control (e.g., antistatic) |
85 |
| 455/284 |
Balancing or cancelling |
50 |
| 455/288 |
Particular composition (e.g., of cell or element) |
4 |
| 455/287 |
Shunt or bypass |
18 |
| 455/286 |
Wave filter, coil, or wave trap |
56 |
| 455/285 |
With image frequency suppression |
67 |
| 455/291 |
Using active device (e.g., as preamplifier or reactance) |
49 |
| 455/289 |
With coupling varying, regulating, or control |
60 |
| 455/73 |
Transmitter and receiver at same station (e.g., transceiver) |
594 |
| 455/74 |
Convertible (e.g., to diverse art device) |
145 |
| 455/74.1 |
Cordless/corded conversion |
116 |
| 455/90.1 |
Having particular application (e.g., avalanche victim assistance) of a transceiver |
377 |
| 455/90.2 |
Having particular configuration (e.g., c.b., or walkie-talkie) of a transceiver |
209 |
| 455/90.3 |
Having particular housing or support of a transceiver |
844 |
| 455/550.1 |
Radiotelephone equipment detail |
1765 |
| 455/564 |
Auto-dialing or repertory dialing (e.g., using bar code, etc.) |
386 |
| 455/561 |
Base station detail |
1246 |
| 455/562.1 |
Having specific antenna arrangement |
1263 |
| 455/567 |
Call alerting |
646 |
| 455/554.2 |
Equipment detail for providing wireless link to fixed equipment (e.g., wll, telco emulator, etc.) |
110 |
| 455/569.1 |
Hands-free or loudspeaking arrangement |
488 |
| 455/569.2 |
In vehicle |
257 |
| 455/570 |
Noise suppression or echo cancellation |
178 |
| 455/566 |
Having display |
1498 |
| 455/563 |
Having voice recognition or synthesization |
324 |
| 455/575.1 |
Housing or support |
1339 |
| 455/575.5 |
Antenna shielding |
159 |
| 455/575.6 |
Attached or connected to user |
133 |
| 455/575.3 |
Foldable type |
614 |
| 455/575.7 |
Having specific antenna arrangement |
557 |
| 455/575.2 |
Headgear |
239 |
| 455/575.9 |
In vehicle |
190 |
| 455/575.8 |
Protective cover |
225 |
| 455/575.4 |
Slidable type |
305 |
| 455/556.1 |
Integrated with other device |
1166 |
| 455/556.2 |
Personal digitial assistant |
483 |
| 455/557 |
Interface attached device (e.g., interface with modem, facsimile, computer, etc.) |
1437 |
| 455/558 |
Card control element |
640 |
| 455/559 |
Smart cable |
48 |
| 455/551 |
Number assignment module (nam) detail |
187 |
| 455/552.1 |
Operable on more than one system |
1252 |
| 455/553.1 |
Radiotelephone having plural transceivers (e.g., for analog and digital, trunking and cellular, etc.) |
679 |
| 455/571 |
Power booster |
117 |
| 455/572 |
Power supply |
551 |
| 455/573 |
Battery charging |
341 |
| 455/574 |
Power conservation |
1100 |
| 455/554.1 |
Remote private branch exchange (pbx) with wireless link to landline |
160 |
| 455/565 |
Restrictive dialing circuitry |
164 |
| 455/560 |
Switching unit detail (e.g., mobile telephone switching office (mtso), base station controller (bsc), etc.) |
727 |
| 455/555 |
Wireless private branch exchange (pbx) (i.e., wireless link to extension unit) |
236 |
| 455/88 |
Transceiver controlling a separate transceiver or receiver |
309 |
| 455/84 |
With a common signal processing stage |
197 |
| 455/85 |
Transmitter oscillator used as detector |
45 |
| 455/86 |
Transmitter oscillator used as local oscillator |
234 |
| 455/87 |
Tunable or variable |
82 |
| 455/75 |
With frequency stabilization (e.g., automatic frequency control) |
139 |
| 455/76 |
Synthesizer |
516 |
| 455/78 |
With transmitter-receiver switching or interaction prevention |
601 |
| 455/79 |
Automatic (e.g., voice operated) |
109 |
| 455/82 |
Common antenna |
264 |
| 455/80 |
With distributed parameter coupling |
102 |
| 455/81 |
Waveguide |
56 |
| 455/83 |
Single antenna switched between transmitter and receiver |
382 |
| 455/77 |
With tuning |
176 |
| 455/39 |
Transmitter and receiver at separate stations |
164 |
| 455/63.1 |
Distortion, noise, or other interference prevention, reduction, or compensation |
1213 |
| 455/65 |
Anti-multipath |
249 |
| 455/63.4 |
Directional antenna |
216 |
| 455/63.3 |
Frequency switching |
117 |
| 455/64 |
Plasma source or barrier |
12 |
| 455/63.2 |
System with hierarchical coverage areas |
39 |
| 455/40 |
Earth or water medium |
57 |
| 455/42 |
Frequency or phase modulation |
167 |
| 455/45 |
Via subcarrier |
173 |
| 455/43 |
With modification of frequencies of analog signal passed (e.g., pre-emphasis and de-emphasis) |
61 |
| 455/44 |
With stated modulation index |
33 |
| 455/66.1 |
Having diverse art device |
343 |
| 455/67.11 |
Having measuring, testing, or monitoring of system or part |
1990 |
| 455/67.13 |
Noise, distortion, or unwanted signal detection (e.g., quality control, etc.) |
999 |
| 455/67.15 |
Of a microwave link or system |
75 |
| 455/67.16 |
Phase measuring (e.g., group delay, propagation effect, etc.) |
329 |
| 455/67.12 |
Using a chamber (e.g., room testing or audio surveillance, etc.) |
73 |
| 455/67.14 |
Using a test signal |
448 |
| 455/67.7 |
With indication (e.g., visual or voice signalling, etc.) |
253 |
| 455/48 |
Inverted sideband |
9 |
| 455/41.1 |
Near field (i.e., inductive or capacitive coupling) |
451 |
| 455/62 |
Optimum frequency selection |
447 |
| 455/500 |
Plural transmitters or receivers (i.e., more than two stations) |
293 |
| 455/527 |
Break-in or priority override |
70 |
| 455/507 |
Central station (e.g., master, etc.) |
260 |
| 455/509 |
Channel allocation |
745 |
| 455/512 |
Based on priority |
264 |
| 455/511 |
Control channel/voice channel conversion |
90 |
| 455/514 |
Having storage detail |
93 |
| 455/510 |
Plural requests (e.g., retries) |
95 |
| 455/513 |
Ranking (e.g., based on signal strength, etc.) |
264 |
| 455/516 |
Channel seizing |
132 |
| 455/515 |
Control channel monitoring (i.e., paging or access channel signaling) for system access |
422 |
| 455/508 |
Having console |
48 |
| 455/526 |
Plural receivers tuned to common frequency |
87 |
| 455/517 |
To or from mobile station |
1137 |
| 455/521 |
Emergency dispatch or response |
231 |
| 455/518 |
Having talk group |
524 |
| 455/520 |
On-site or multi-site trunking |
151 |
| 455/519 |
Talk group forming (e.g., dynamic regrouping, talk group assignment) |
353 |
| 455/524 |
Multiple base stations |
526 |
| 455/525 |
Base station selection |
400 |
| 455/522 |
Transmission power control technique |
2169 |
| 455/523 |
Using radiating transmission line |
83 |
| 455/528 |
Lockout or busy-idle signaling |
117 |
| 455/501 |
Noise, distortion, or singing reduction |
242 |
| 455/504 |
Fading compensation |
191 |
| 455/505 |
Due to weather |
43 |
| 455/506 |
Rayleigh or multipath fading |
186 |
| 455/502 |
Synchronized stations |
645 |
| 455/503 |
Simulcast system |
256 |
| 455/41.2 |
Short range rf communication |
1248 |
| 455/41.3 |
To output device |
203 |
| 455/59 |
Single message via plural carrier wave transmission |
135 |
| 455/60 |
Different phases of same frequency carrier |
76 |
| 455/61 |
Single message via plural modulation of single carrier |
43 |
| 455/47 |
Single or vestigial sideband system |
92 |
| 455/46 |
Suppressed carrier wave system |
52 |
| 455/68 |
With control signal |
258 |
| 455/70 |
Receiver control signal originates at message transmitter |
309 |
| 455/72 |
For compression and expansion of message signal (i.e., companding) |
146 |
| 455/71 |
Frequency control |
125 |
| 455/701 |
Tone coded squelch |
86 |
| 455/702 |
Plural tones |
37 |
| 455/703 |
Difference frequency |
16 |
| 455/69 |
Transmitter controlled by signal feedback from receiver |
1571 |
| 455/91 |
Transmitter |
272 |
| 455/94 |
Alternator |
1 |
| 455/108 |
Amplitude modulation |
248 |
| 455/109 |
Vestigial or single sideband or suppressed carrier |
118 |
| 455/110 |
Angle modulation |
163 |
| 455/111 |
Including distributed parameter structure |
23 |
| 455/113 |
With frequency control |
149 |
| 455/112 |
With frequency multiplication or division |
101 |
| 455/116 |
Carrier amplitude control (e.g., voice operated on/off) |
191 |
| 455/119 |
Carrier frequency stabilization |
142 |
| 455/93 |
Convertible to different type (e.g., am to fm) |
80 |
| 455/101 |
Diversity |
617 |
| 455/118 |
Frequency conversion |
281 |
| 455/114.1 |
Having harmonic radiation suppression |
70 |
| 455/120 |
Including tuning |
53 |
| 455/125 |
Automatic adjustment of tuning |
97 |
| 455/124 |
Distributed parameter device |
18 |
| 455/121 |
In antenna circuit |
108 |
| 455/123 |
Automatically controlled |
64 |
| 455/122 |
With saturable reactor |
4 |
| 455/115.1 |
Measuring, testing, or monitoring of transmitter |
507 |
| 455/115.4 |
Having meter or indicator |
66 |
| 455/115.3 |
Signal strength |
179 |
| 455/115.2 |
Using a test signal |
96 |
| 455/95 |
Mobile or portable |
173 |
| 455/100 |
Body attached or connected |
209 |
| 455/96 |
Transmitter ejected from moving vehicle |
23 |
| 455/98 |
With aircraft, satellite, or projectile |
79 |
| 455/97 |
With antenna ejection or external support |
40 |
| 455/99 |
With vehicle |
192 |
| 455/106 |
Modulation by absorption, shielding, or reflecting |
77 |
| 455/114.2 |
Noise or interference elimination |
281 |
| 455/114.3 |
Predistortion (e.g., for power amplifier) |
242 |
| 455/102 |
Plural modulation |
265 |
| 455/103 |
Plural separate transmitters or channels |
411 |
| 455/104 |
Carrier and sidebands separately transmitted |
32 |
| 455/105 |
Common frequency |
36 |
| 455/127.1 |
Power control, power supply, or bias voltage supply |
835 |
| 455/127.4 |
Dual mode (e.g., analog and digital) |
87 |
| 455/127.2 |
Gain control |
427 |
| 455/127.3 |
Plural amplifier stages |
197 |
| 455/127.5 |
Power conservation |
190 |
| 455/92 |
Remote control of a transmitter |
103 |
| 455/128 |
With casing or housing |
226 |
| 455/129 |
With coupled antenna |
290 |
| 455/117 |
With electrical protection of transmitter circuit or operator |
192 |
| 455/126 |
With feedback of modulated output signal |
870 |
| 455/107 |
With variation of antenna impedance or dimension for modulation |
61 |
| 455/26.1 |
Use or access blocking (e.g., locking switch) |
66 |
| 455/3.01 |
Wireless distribution system |
368 |
| 455/3.06 |
Combined with diverse art device (e.g., audio/sound or entertainment system) |
364 |
| 455/3.02 |
Receiver for satellite broadcast |
345 |
| 455/3.03 |
Remote control of distribution |
136 |
| 455/3.04 |
With subscriber selection or switching |
123 |
| 455/3.05 |
Two-way |
153 |
