CA2358691A1 - Video control system - Google Patents

Video control system Download PDF

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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
Application number
CA002358691A
Other languages
French (fr)
Other versions
CA2358691C (en
Inventor
Stephen S. Walker
Clarence M. Sidlo
Melvin J. Teare
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Verizon Laboratories Inc
Original Assignee
Gte Laboratories Incorporated
Stephen S. Walker
Clarence M. Sidlo
Melvin J. Teare
Verizon Laboratories Inc.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from US07/501,683 external-priority patent/US5046090A/en
Priority claimed from US07/501,682 external-priority patent/US5046092A/en
Priority claimed from US07/501,688 external-priority patent/US5054064A/en
Priority claimed from US07/501,684 external-priority patent/US4991208A/en
Application filed by Gte Laboratories Incorporated, Stephen S. Walker, Clarence M. Sidlo, Melvin J. Teare, Verizon Laboratories Inc. filed Critical Gte Laboratories Incorporated
Priority claimed from CA002039123A external-priority patent/CA2039123C/en
Publication of CA2358691A1 publication Critical patent/CA2358691A1/en
Application granted granted Critical
Publication of CA2358691C publication Critical patent/CA2358691C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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.
CA002358691A 1990-03-29 1991-03-26 Video control system Expired - Lifetime CA2358691C (en)

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)

Also Published As

Publication number Publication date
CA2358691C (en) 2005-08-23

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