JPS56169483A - Character code transmission system - Google Patents

Character code transmission system

Info

Publication number
JPS56169483A
JPS56169483A JP7267480A JP7267480A JPS56169483A JP S56169483 A JPS56169483 A JP S56169483A JP 7267480 A JP7267480 A JP 7267480A JP 7267480 A JP7267480 A JP 7267480A JP S56169483 A JPS56169483 A JP S56169483A
Authority
JP
Japan
Prior art keywords
code
packet
character
program
page
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
JP7267480A
Other languages
Japanese (ja)
Inventor
Tadashi Isobe
Tsukasa Yamada
Shunichi Masuyama
Akio Yanagimachi
Yasutaka Numaguchi
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 JP7267480A priority Critical patent/JPS56169483A/en
Publication of JPS56169483A publication Critical patent/JPS56169483A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
    • H04N7/087—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only
    • H04N7/088—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only the inserted signal being digital
    • H04N7/0887—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only the inserted signal being digital for the transmission of programme or channel identifying signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Systems (AREA)

Abstract

PURPOSE:To decrease the number of bits for identification code, by transmitting a program identification code, relative address code, and a page control code for every screen constituted with character informaton, and alternately transmitting a character code and a display code in time division for each line. CONSTITUTION:The character information for one screen is transmitted with three types of packets such as a page control packet (a), line cntrol packet (b), and character code packet (c). Further, when a receiver designates the program number of character boradcast program desired for listening and the page number with a program selection key pad, the page control packet (a) in which the program code PR and the page code PA are coincident with designated ones is selectively received, and the relative address code RA and display control code DC in the packet, the number of packets PN, and each line control codes RC1-RC8 are temporarily stored, and the total number of PN is selectively received for the character code packet in which the relative address code RA succeeding to the page control packet (a) coincides. Thus, the number of bits of required identification codes for the packet are decreased.
JP7267480A 1980-06-02 1980-06-02 Character code transmission system Pending JPS56169483A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7267480A JPS56169483A (en) 1980-06-02 1980-06-02 Character code transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7267480A JPS56169483A (en) 1980-06-02 1980-06-02 Character code transmission system

Publications (1)

Publication Number Publication Date
JPS56169483A true JPS56169483A (en) 1981-12-26

Family

ID=13496138

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7267480A Pending JPS56169483A (en) 1980-06-02 1980-06-02 Character code transmission system

Country Status (1)

Country Link
JP (1) JPS56169483A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2260232A (en) * 1990-05-30 1993-04-07 British Broadcasting Corp Broadcast receiver system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2260232A (en) * 1990-05-30 1993-04-07 British Broadcasting Corp Broadcast receiver system
GB2260232B (en) * 1990-05-30 1994-05-25 British Broadcasting Corp Broadcast receiver system

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