JPH0255988B2 - - Google Patents

Info

Publication number
JPH0255988B2
JPH0255988B2 JP57109709A JP10970982A JPH0255988B2 JP H0255988 B2 JPH0255988 B2 JP H0255988B2 JP 57109709 A JP57109709 A JP 57109709A JP 10970982 A JP10970982 A JP 10970982A JP H0255988 B2 JPH0255988 B2 JP H0255988B2
Authority
JP
Japan
Prior art keywords
signal
circuit
triangular wave
frequency
television
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.)
Expired - Lifetime
Application number
JP57109709A
Other languages
English (en)
Japanese (ja)
Other versions
JPS592490A (ja
Inventor
Masaki Noda
Takao Shinkawa
Takeshi Saito
Hiroshi Hatashita
Shigeo Matsura
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP57109709A priority Critical patent/JPS592490A/ja
Priority to US06/508,467 priority patent/US4589016A/en
Priority to CA000431309A priority patent/CA1210142A/en
Publication of JPS592490A publication Critical patent/JPS592490A/ja
Publication of JPH0255988B2 publication Critical patent/JPH0255988B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/04—Systems for the transmission of one television signal, i.e. both picture and sound, by a single carrier
    • H04N7/045—Systems for the transmission of one television signal, i.e. both picture and sound, by a single carrier the carrier being frequency modulated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K1/00—Secret communication
    • H04K1/02—Secret communication by adding a second signal to make the desired signal unintelligible
    • 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
    • H04N7/1713—Systems operating in the amplitude domain of the television signal by modifying synchronisation signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Picture Signal Circuits (AREA)
  • Television Systems (AREA)
JP57109709A 1982-06-28 1982-06-28 Ｆｍテレビジヨン信号の受信回路 Granted JPS592490A (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP57109709A JPS592490A (ja) 1982-06-28 1982-06-28 Ｆｍテレビジヨン信号の受信回路
US06/508,467 US4589016A (en) 1982-06-28 1983-06-28 FM television signal receiving circuit
CA000431309A CA1210142A (en) 1982-06-28 1983-06-28 Fm television signal receiving circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57109709A JPS592490A (ja) 1982-06-28 1982-06-28 Ｆｍテレビジヨン信号の受信回路

Publications (2)

Publication Number Publication Date
JPS592490A JPS592490A (ja) 1984-01-09
JPH0255988B2 true JPH0255988B2 (US20080293856A1-20081127-C00150.png) 1990-11-28

Family

ID=14517223

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57109709A Granted JPS592490A (ja) 1982-06-28 1982-06-28 Ｆｍテレビジヨン信号の受信回路

Country Status (3)

Country Link
US (1) US4589016A (US20080293856A1-20081127-C00150.png)
JP (1) JPS592490A (US20080293856A1-20081127-C00150.png)
CA (1) CA1210142A (US20080293856A1-20081127-C00150.png)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60217774A (ja) * 1984-04-13 1985-10-31 Hitachi Ltd 高品位テレビ受信機
JPH0318141A (ja) * 1989-06-15 1991-01-25 Nippon Avionics Co Ltd スペクトラム拡散通信における同期方法
IT1237135B (it) * 1989-10-30 1993-05-24 Pirelli Cavi Spa Gruppo di amplificazione ottico a basso rumore, con riflessione della potenza di pompaggio.
EP0431875A3 (en) * 1989-12-04 1992-02-26 Matsushita Electric Industrial Co., Ltd. Energy dispersal signal adding apparatus and energy dispersal signal removing apparatus

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4216500A (en) * 1978-11-13 1980-08-05 St Louis Raymond F Encoding and decoding system
JPS5767380A (en) * 1980-10-15 1982-04-23 Alps Electric Co Ltd Video clamping circuit
JPS57135582A (en) * 1981-02-16 1982-08-21 Hitachi Ltd Reception circuit for fm television signal
CA1170354A (en) * 1981-02-18 1984-07-03 Takao Mogi Aft circuit

Also Published As

Publication number Publication date
JPS592490A (ja) 1984-01-09
US4589016A (en) 1986-05-13
CA1210142A (en) 1986-08-19

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