CA2358691A1 - Video control system - Google Patents
Video control system Download PDFInfo
- Publication number
- CA2358691A1 CA2358691A1 CA002358691A CA2358691A CA2358691A1 CA 2358691 A1 CA2358691 A1 CA 2358691A1 CA 002358691 A CA002358691 A CA 002358691A CA 2358691 A CA2358691 A CA 2358691A CA 2358691 A1 CA2358691 A1 CA 2358691A1
- Authority
- CA
- Canada
- Prior art keywords
- video
- control system
- video control
- field containing
- video signal
- 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
A video recording medium storing a video program includes a series of television fields including a first field containing both a random digital code encrypted according to a code encryption key and program identification data, and a second field containing an unintelligible video signal previously transformed from an intelligible video signal according to the random digital code.
Applications Claiming Priority (13)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US50162090A | 1990-03-29 | 1990-03-29 | |
US50168590A | 1990-03-29 | 1990-03-29 | |
US07/501,688 | 1990-03-29 | ||
US07/501,683 US5046090A (en) | 1990-03-29 | 1990-03-29 | Recorded medium for video control system |
US07/501,682 | 1990-03-29 | ||
US07/501,683 | 1990-03-29 | ||
US07/501,684 | 1990-03-29 | ||
US07/501,682 US5046092A (en) | 1990-03-29 | 1990-03-29 | Video control system for transmitted programs |
US07/501,688 US5054064A (en) | 1990-03-29 | 1990-03-29 | Video control system for recorded programs |
US07/501,685 | 1990-03-29 | ||
US07/501,620 | 1990-03-29 | ||
US07/501,684 US4991208A (en) | 1990-03-29 | 1990-03-29 | Video control system having session encryption key |
CA002039123A CA2039123C (en) | 1990-03-29 | 1991-03-26 | Video control system |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002039123A Division CA2039123C (en) | 1990-03-29 | 1991-03-26 | Video control system |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2358691A1 true CA2358691A1 (en) | 1991-09-30 |
CA2358691C CA2358691C (en) | 2005-08-23 |
Family
ID=27560959
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002358691A Expired - Lifetime CA2358691C (en) | 1990-03-29 | 1991-03-26 | Video control system |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA2358691C (en) |
-
1991
- 1991-03-26 CA CA002358691A patent/CA2358691C/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CA2358691C (en) | 2005-08-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKEX | Expiry |