CA2220483A1 - Compressed digital-data interactive program system - Google Patents
Compressed digital-data interactive program systemInfo
- Publication number
- CA2220483A1 CA2220483A1 CA002220483A CA2220483A CA2220483A1 CA 2220483 A1 CA2220483 A1 CA 2220483A1 CA 002220483 A CA002220483 A CA 002220483A CA 2220483 A CA2220483 A CA 2220483A CA 2220483 A1 CA2220483 A1 CA 2220483A1
- Authority
- CA
- Canada
- Prior art keywords
- signal
- selects
- signals
- interactive
- video
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
An interactive cable television system is disclosed which utilizes a standard cable television distribution network for simultaneously providing a plurality of viewers with an interactive television program comprising a plurality of signals related in time and content. Video signals (1) are transmitted in a digital format, more than one signal being multiplexed onto a data stream on a single channel. The video signals (1) may be compressed for efficiency. A receiver (7), in conjunction with a signal selector (8), selects a particular NTSC channel for playback, then selects a particular video signal from the data stream, and decompresses the video signal for playback. Seamless switching between video signals on different channels is provided. An alternative embodiment is disclosed wherein the various signals which comprise the interactive program are switched at the head end (300) rather than at the receiver (7). The multiple choice control unit (9) selects a desired signal by relaying the multiple choice selections of the user through a relay box (17) back to a remotely located switching station.
The switching station routes the correct video signal down the appropriate cable channel for the particular user.
The switching station routes the correct video signal down the appropriate cable channel for the particular user.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002464378A CA2464378A1 (en) | 1995-05-18 | 1996-05-17 | Compressed digital-data interactive program system |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US43360795A | 1995-05-18 | 1995-05-18 | |
US08/433,607 | 1995-05-18 | ||
PCT/US1996/007236 WO1996037075A1 (en) | 1995-05-18 | 1996-05-17 | Compressed digital-data interactive program system |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002464378A Division CA2464378A1 (en) | 1995-05-18 | 1996-05-17 | Compressed digital-data interactive program system |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2220483A1 true CA2220483A1 (en) | 1996-11-21 |
CA2220483C CA2220483C (en) | 2004-12-07 |
Family
ID=23720800
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002220483A Expired - Lifetime CA2220483C (en) | 1995-05-18 | 1996-05-17 | Compressed digital-data interactive program system |
Country Status (3)
Country | Link |
---|---|
JP (1) | JP3946251B2 (en) |
CA (1) | CA2220483C (en) |
DK (1) | DK0826287T3 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008511249A (en) * | 2004-08-25 | 2008-04-10 | トムソン ライセンシング | Reduces channel change time for digital video input |
-
1996
- 1996-05-17 JP JP53512196A patent/JP3946251B2/en not_active Expired - Lifetime
- 1996-05-17 CA CA002220483A patent/CA2220483C/en not_active Expired - Lifetime
- 1996-05-17 DK DK96920299T patent/DK0826287T3/en active
Also Published As
Publication number | Publication date |
---|---|
JP2002515194A (en) | 2002-05-21 |
CA2220483C (en) | 2004-12-07 |
JP3946251B2 (en) | 2007-07-18 |
DK0826287T3 (en) | 2002-10-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2000016544A3 (en) | Compressed digital-data seamless video switching system | |
AU5864996A (en) | Compressed digital-data interactive program system | |
US5886731A (en) | Video data receiving apparatus, video data transmitting apparatus, and broadcasting system | |
CA1306053C (en) | Closed circuit television system having seamless interactive television programming and expandable user participation | |
US5949476A (en) | Television system distributing a dynamically varying number of concurrent video presentations over a single television channel | |
CA2265958A1 (en) | Set top terminal for an interactive information distribution system | |
EP0827336A3 (en) | Digital broadcasting system, digital broadcasting apparatus, and associated receiver therefor | |
WO1993011617A1 (en) | Compressed digital data interactive television system | |
JPH08242436A (en) | Two-way television reception system | |
JPH07107446A (en) | Related program information supply device | |
CA2220483A1 (en) | Compressed digital-data interactive program system | |
JP2004222318A (en) | Broadcast transmitting/receiving method | |
CA2464378A1 (en) | Compressed digital-data interactive program system |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKEX | Expiry |
Effective date: 20160517 |
|
MKEX | Expiry |
Effective date: 20160517 |