JPS6447190A - System for transmitting video scramble and transmitter-receiver thereof - Google Patents

System for transmitting video scramble and transmitter-receiver thereof

Info

Publication number
JPS6447190A
JPS6447190A JP62203377A JP20337787A JPS6447190A JP S6447190 A JPS6447190 A JP S6447190A JP 62203377 A JP62203377 A JP 62203377A JP 20337787 A JP20337787 A JP 20337787A JP S6447190 A JPS6447190 A JP S6447190A
Authority
JP
Japan
Prior art keywords
signal
scramble
interval
video
receiver
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
JP62203377A
Other languages
Japanese (ja)
Other versions
JPH0779465B2 (en
Inventor
Takeshi Kimura
Naoki Kawai
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.)
Japan Broadcasting Corp
Original Assignee
Nippon Hoso Kyokai NHK
Japan Broadcasting Corp
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
Application filed by Nippon Hoso Kyokai NHK, Japan Broadcasting Corp filed Critical Nippon Hoso Kyokai NHK
Priority to JP62203377A priority Critical patent/JPH0779465B2/en
Publication of JPS6447190A publication Critical patent/JPS6447190A/en
Publication of JPH0779465B2 publication Critical patent/JPH0779465B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PURPOSE:To de-scramble the TV signal of a scramble system by transmitting a main scrambled video signal and a secondary video signal inserted to the interval of an effective scanning area and executing reverse operation of a transmission side in a reception side. CONSTITUTION:A signal from a signal source 1 of a main video is scramble- processed in a scramble circuit 2. Next, in order to transmit a secondary video in the effective scanning area, the interval is made in the effective scanning area by a scanning line transition circuit 3 and the scanning lines of a number to correspond to the interval are brought to a vertical blancking part. Next, a signal from a signal source 4 of the secondary video is inserted to the interval by an inserter 5. The transmission signal is transmitted through a transmission path. This signal is received by a scramble broadcast receiver and the image is restored by executing the respectively reverse operation of the circuits 3 and 2 in a de-scramble circuit 12 and the main video is observed in an original condition by a receiver 7-2.
JP62203377A 1987-08-18 1987-08-18 Video scramble transmission system and its transmitter / receiver Expired - Lifetime JPH0779465B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62203377A JPH0779465B2 (en) 1987-08-18 1987-08-18 Video scramble transmission system and its transmitter / receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62203377A JPH0779465B2 (en) 1987-08-18 1987-08-18 Video scramble transmission system and its transmitter / receiver

Publications (2)

Publication Number Publication Date
JPS6447190A true JPS6447190A (en) 1989-02-21
JPH0779465B2 JPH0779465B2 (en) 1995-08-23

Family

ID=16473026

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62203377A Expired - Lifetime JPH0779465B2 (en) 1987-08-18 1987-08-18 Video scramble transmission system and its transmitter / receiver

Country Status (1)

Country Link
JP (1) JPH0779465B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07508092A (en) * 1992-06-05 1995-09-07 アストロノーティックス コーポレイション オブ アメリカ Activated magnetic reproducing method and device
US5996577A (en) * 1995-08-11 1999-12-07 Unisia Jecs Corporation Medicine administering apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07508092A (en) * 1992-06-05 1995-09-07 アストロノーティックス コーポレイション オブ アメリカ Activated magnetic reproducing method and device
US5996577A (en) * 1995-08-11 1999-12-07 Unisia Jecs Corporation Medicine administering apparatus
EP1153626A1 (en) 1995-08-11 2001-11-14 Unisia Jecs Corporation Medicine administering apparatus

Also Published As

Publication number Publication date
JPH0779465B2 (en) 1995-08-23

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