JPS58151787A - スクランブル／デイスクランブル方式 - Google Patents

スクランブル／デイスクランブル方式

Info

Publication number
JPS58151787A
JPS58151787A JP57034736A JP3473682A JPS58151787A JP S58151787 A JPS58151787 A JP S58151787A JP 57034736 A JP57034736 A JP 57034736A JP 3473682 A JP3473682 A JP 3473682A JP S58151787 A JPS58151787 A JP S58151787A
Authority
JP
Japan
Prior art keywords
signal
circuit
output
frequency
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
Application number
JP57034736A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0437633B2 (enrdf_load_stackoverflow
Inventor
Akiyuki Yoshisato
善里　彰之
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.)
Alps Alpine Co Ltd
Original Assignee
Alps Electric Co Ltd
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 Alps Electric Co Ltd filed Critical Alps Electric Co Ltd
Priority to JP57034736A priority Critical patent/JPS58151787A/ja
Publication of JPS58151787A publication Critical patent/JPS58151787A/ja
Publication of JPH0437633B2 publication Critical patent/JPH0437633B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/167—Systems rendering the television signal unintelligible and subsequently intelligible
    • H04N7/171—Systems operating in the amplitude domain of the television signal
    • H04N7/1716—Systems operating in the amplitude domain of the television signal by inverting the polarity of active picture signal portions

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
JP57034736A 1982-03-05 1982-03-05 スクランブル／デイスクランブル方式 Granted JPS58151787A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57034736A JPS58151787A (ja) 1982-03-05 1982-03-05 スクランブル／デイスクランブル方式

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57034736A JPS58151787A (ja) 1982-03-05 1982-03-05 スクランブル／デイスクランブル方式

Publications (2)

Publication Number Publication Date
JPS58151787A true JPS58151787A (ja) 1983-09-09
JPH0437633B2 JPH0437633B2 (enrdf_load_stackoverflow) 1992-06-19

Family

ID=12422598

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57034736A Granted JPS58151787A (ja) 1982-03-05 1982-03-05 スクランブル／デイスクランブル方式

Country Status (1)

Country Link
JP (1) JPS58151787A (enrdf_load_stackoverflow)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5396621A (en) * 1977-01-31 1978-08-24 Teleglobe Pay Tv Syst Toll television system
JPS5477514A (en) * 1977-10-19 1979-06-21 Feature Film Services Subscriberh*s tv system
JPS55130248A (en) * 1979-03-30 1980-10-08 Pioneer Electronic Corp Fm broadcast system
JPS5628578A (en) * 1979-08-17 1981-03-20 Clarion Co Ltd Coding system in pay television system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5396621A (en) * 1977-01-31 1978-08-24 Teleglobe Pay Tv Syst Toll television system
JPS5477514A (en) * 1977-10-19 1979-06-21 Feature Film Services Subscriberh*s tv system
JPS55130248A (en) * 1979-03-30 1980-10-08 Pioneer Electronic Corp Fm broadcast system
JPS5628578A (en) * 1979-08-17 1981-03-20 Clarion Co Ltd Coding system in pay television system

Also Published As

Publication number Publication date
JPH0437633B2 (enrdf_load_stackoverflow) 1992-06-19

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