| Class Number |
Class Name |
No. of Patents |
| 725/25 |
Access control or blocking |
248 |
| 725/30 |
Access via pin or password |
75 |
| 725/26 |
By mechanical lock |
34 |
| 725/27 |
Of specific channel |
70 |
| 725/28 |
Of specific program (e.g., based on program rating) |
146 |
| 725/29 |
Time dependent (e.g., time spent viewing program, time of day, etc.) |
61 |
| 725/31 |
With encryption or scrambling of video signal |
266 |
| 725/1 |
Billing in video distribution system |
142 |
| 725/4 |
Data stored at intermediate point (i.e., at location between headend or server and receiver) |
32 |
| 725/2 |
Data stored locally (e.g., at set-top box) |
63 |
| 725/3 |
On nonelectronic medium (e.g., paper tape or meter) |
5 |
| 725/8 |
Having variable cost or free preview period |
52 |
| 725/5 |
Payment method or scheme |
51 |
| 725/6 |
Card reader (e.g., reader for credit, debit, or smart card) |
54 |
| 725/7 |
Coin operated |
8 |
| 725/62 |
Cellular video distribution system |
76 |
| 725/22 |
Commercial or program airing verification system |
101 |
| 725/24 |
Interactive opinion polling |
90 |
| 725/74 |
Local video distribution system |
122 |
| 725/78 |
Multiunit or multiroom structure (e.g., home, hospital, hotel, office building, school, etc.) |
173 |
| 725/80 |
Coordinating diverse devices |
127 |
| 725/83 |
Having additional amenity (e.g., access to outside network, room service, etc.) |
34 |
| 725/84 |
Combined with call bell system for hospital use |
3 |
| 725/82 |
Local server or headend |
124 |
| 725/85 |
Receiver |
92 |
| 725/79 |
Using existing power network |
38 |
| 725/81 |
Using wireless link |
106 |
| 725/75 |
Vehicle |
43 |
| 725/76 |
Airplane |
85 |
| 725/77 |
Seat-back terminal |
37 |
| 725/37 |
Operator interface |
278 |
| 725/60 |
Interactive product selection |
116 |
| 725/61 |
Interactive program selection |
167 |
| 725/38 |
To facilitate tuning or selection of video signal |
227 |
| 725/56 |
Channel guide (i.e., channel-specific as opposed to program-specific guide) |
96 |
| 725/39 |
Electronic program guide |
409 |
| 725/48 |
Combined from plural information providers (e.g., combined terrestrial and satellite sources) |
68 |
| 725/49 |
Combined at local receiver |
88 |
| 725/44 |
Content arrangement |
147 |
| 725/45 |
Based on genre, theme, or category |
144 |
| 725/46 |
Based on personal preference, profile, or viewing history (e.g., to produce redacted listing) |
273 |
| 725/47 |
User customization of display content |
132 |
| 725/40 |
For displaying additional information |
255 |
| 725/42 |
Commercial or advertisement |
133 |
| 725/41 |
Video still or clip |
137 |
| 725/43 |
With separate window, panel, or screen |
162 |
| 725/51 |
Having link to external information resource (e.g., online resource) |
105 |
| 725/50 |
Information updating |
127 |
| 725/52 |
Navigational feature |
145 |
| 725/55 |
Provided on recordable medium |
39 |
| 725/53 |
Searching (e.g., by title or actor's name) |
110 |
| 725/54 |
Transmission scheme |
123 |
| 725/58 |
Program reserve or reminder system |
205 |
| 725/59 |
Selecting from multiple inputs or sources |
81 |
| 725/57 |
Tune-by-label (i.e., channel selection by alphanumeric character entry) |
24 |
| 725/32 |
Program, message, or commercial insertion or substitution |
264 |
| 725/35 |
Based on demographics or geographical area |
122 |
| 725/33 |
Emergency warning |
56 |
| 725/36 |
Insertion of local commercial or local program at headend or network affiliate |
122 |
| 725/34 |
Specific to individual user or household |
174 |
| 725/63 |
Satellite video distribution system |
98 |
| 725/68 |
Receiver |
263 |
| 725/72 |
Antenna initialization, calibration, or aiming |
52 |
| 725/70 |
For digital signal |
72 |
| 725/71 |
For providing signals to plural subsequent receivers |
54 |
| 725/69 |
Polarization of signal |
44 |
| 725/67 |
Transmitter |
99 |
| 725/64 |
Two-way |
30 |
| 725/65 |
Return path |
14 |
| 725/66 |
Terrestrial return path |
39 |
| 725/23 |
System for awarding coupon, token, or credit |
58 |
| 725/73 |
Terrestrial microwave video distribution system |
35 |
| 725/9 |
Use surveying or monitoring (e.g., program or channel watched) |
147 |
| 725/14 |
By passively monitoring receiver operation |
155 |
| 725/20 |
By data encoded in video signal (e.g., vbi data) |
68 |
| 725/15 |
By detecting local oscillator or if signal |
29 |
| 725/17 |
By monitoring sync or blanking pulse |
21 |
| 725/16 |
By polling |
28 |
| 725/18 |
By use of audio signal |
51 |
| 725/19 |
By use of pattern recognition or signature |
60 |
| 725/21 |
Combined with detecting vcr operation |
27 |
| 725/13 |
Manual entry (e.g., using keypad or by written response) |
59 |
| 725/10 |
Monitoring physical reaction or presence of viewer |
67 |
| 725/12 |
By passive determination and measurement (e.g., by detecting motion or ambient temperature, or by use of video camera) |
45 |
| 725/11 |
With entry of user identification |
27 |
| 725/86 |
User-requested video program system |
190 |
| 725/101 |
Near video-on-demand system (i.e., providing plural, time-staggered versions of same program) |
72 |
| 725/103 |
Server or headend |
52 |
| 725/102 |
Vcr-like function |
64 |
| 725/104 |
Pay-per-view |
169 |
| 725/87 |
Video-on-demand |
319 |
| 725/100 |
Receiver (e.g., set-top box) |
201 |
| 725/91 |
Server or headend |
194 |
| 725/93 |
Control process |
289 |
| 725/94 |
Buffering and switching |
110 |
| 725/95 |
Channel or bandwidth allocation |
153 |
| 725/96 |
In accordance with server or network congestion |
68 |
| 725/97 |
Scheduling (e.g., grouping users together) |
120 |
| 725/92 |
Mass storage |
196 |
| 725/98 |
Transmission network |
110 |
| 725/99 |
Using telephone network |
41 |
| 725/88 |
Vcr-like function |
117 |
| 725/89 |
By use of memory at receiver |
74 |
| 725/90 |
With particular transmission scheme (e.g., transmitting i-frames only) |
74 |
| 725/143 |
Video distribution system components |
88 |
| 725/144 |
Headend |
145 |
| 725/147 |
Communications interface |
42 |
| 725/146 |
Control process |
123 |
| 725/145 |
Data storage or retrieval |
70 |
| 725/151 |
Receiver (e.g., set-top box) |
390 |
| 725/152 |
Programmable or upgradeable |
87 |
| 725/153 |
With diverse device (e.g., personal computer, game player, vcr, etc.) |
151 |
| 725/148 |
Transmission network |
98 |
| 725/149 |
Network component (e.g., filter, tap, splitter, amplifier, repeater, etc.) |
130 |
| 725/150 |
Power signal over network |
26 |
| 725/135 |
Video distribution system with local interaction |
124 |
| 725/138 |
Headend |
112 |
| 725/136 |
Interactive data transmitted in video signal band (e.g., vbi or hbi data) |
155 |
| 725/137 |
Teletext |
58 |
| 725/139 |
Receiver (e.g., set-top box) |
290 |
| 725/142 |
Having particular storage feature |
163 |
| 725/140 |
Programmable or upgradeable |
89 |
| 725/141 |
With diverse device (e.g., personal computer, game player, vcr, etc.) |
191 |
| 725/105 |
Video distribution system with upstream communication |
279 |
| 725/108 |
Alarm system using television network |
40 |
| 725/109 |
Having link to external network (e.g., interconnected computer network) |
248 |
| 725/111 |
Cable modem |
200 |
| 725/110 |
Connection to external network at receiver (e.g., set-top box) |
280 |
| 725/112 |
Link transmission (e.g., url sent to user) |
180 |
| 725/113 |
Conveyed in video image |
47 |
| 725/131 |
Receiver (e.g., set-top box) |
576 |
| 725/134 |
Having particular storage feature |
188 |
| 725/132 |
Programmable or upgradeable |
154 |
| 725/133 |
With diverse device (e.g., personal computer, game player, vcr, etc.) |
187 |
| 725/107 |
Remote testing of cable system |
140 |
| 725/114 |
Server or headend |
349 |
| 725/117 |
Communications interface |
142 |
| 725/116 |
Control process |
378 |
| 725/115 |
Data storage or retrieval |
172 |
| 725/106 |
Telephony via television distribution network |
160 |
| 725/118 |
Transmission network |
189 |
| 725/126 |
Detail of use of two-way spectrum |
149 |
| 725/119 |
Having significant intermediate network unit (e.g., hub, substation, etc.) |
207 |
| 725/120 |
With two-way connection from unit to receiver (e.g., for the purpose of channel selection) |
82 |
| 725/129 |
Hybrid fiber-coax network |
146 |
| 725/127 |
Network component (e.g., filter, tap, splitter, amplifier, repeater, etc.) |
204 |
| 725/128 |
Diplex filter |
43 |
| 725/130 |
Power signal over network |
39 |
| 725/121 |
Return path |
107 |
| 725/124 |
Noise in return path |
46 |
| 725/125 |
Ingress noise |
75 |
| 725/122 |
Return path via telephone network |
136 |
| 725/123 |
Wireless return path |
54 |
