JPS5647177A - Information service system - Google Patents

Information service system

Info

Publication number
JPS5647177A
JPS5647177A JP12336279A JP12336279A JPS5647177A JP S5647177 A JPS5647177 A JP S5647177A JP 12336279 A JP12336279 A JP 12336279A JP 12336279 A JP12336279 A JP 12336279A JP S5647177 A JPS5647177 A JP S5647177A
Authority
JP
Japan
Prior art keywords
data
sound
terminal unit
picture
discrimination codes
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.)
Pending
Application number
JP12336279A
Other languages
English (en)
Inventor
Taichi Nakamura
Yuichi Sato
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone 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 Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP12336279A priority Critical patent/JPS5647177A/ja
Publication of JPS5647177A publication Critical patent/JPS5647177A/ja
Pending 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
    • H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
JP12336279A 1979-09-26 1979-09-26 Information service system Pending JPS5647177A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12336279A JPS5647177A (en) 1979-09-26 1979-09-26 Information service system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12336279A JPS5647177A (en) 1979-09-26 1979-09-26 Information service system

Publications (1)

Publication Number Publication Date
JPS5647177A true JPS5647177A (en) 1981-04-28

Family

ID=14858701

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12336279A Pending JPS5647177A (en) 1979-09-26 1979-09-26 Information service system

Country Status (1)

Country Link
JP (1) JPS5647177A (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58165489A (ja) * 1981-10-15 1983-09-30 エタブリツスモン・ピユブリツク・ド・デイフユジオン・デイ・テレデイフユジオン・ド・フランス 一方通路式送信システム

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53125717A (en) * 1977-04-08 1978-11-02 Matsushita Electric Ind Co Ltd Transmission and reception unit for television signal
JPS5477014A (en) * 1977-12-02 1979-06-20 Hitachi Ltd Constituting method ror picture information service system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53125717A (en) * 1977-04-08 1978-11-02 Matsushita Electric Ind Co Ltd Transmission and reception unit for television signal
JPS5477014A (en) * 1977-12-02 1979-06-20 Hitachi Ltd Constituting method ror picture information service system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58165489A (ja) * 1981-10-15 1983-09-30 エタブリツスモン・ピユブリツク・ド・デイフユジオン・デイ・テレデイフユジオン・ド・フランス 一方通路式送信システム
JPS58165490A (ja) * 1981-10-15 1983-09-30 エタブリツスモン・ピユブリツク・ド・デイフユジオン・デイ・テレデイフユジオン・ド・フランス 一方通路式デ−タ伝送方式

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