JPS55165081A - Detection system of broadcast confirming signal - Google Patents

Detection system of broadcast confirming signal

Info

Publication number
JPS55165081A
JPS55165081A JP7320579A JP7320579A JPS55165081A JP S55165081 A JPS55165081 A JP S55165081A JP 7320579 A JP7320579 A JP 7320579A JP 7320579 A JP7320579 A JP 7320579A JP S55165081 A JPS55165081 A JP S55165081A
Authority
JP
Japan
Prior art keywords
signal
fed
threshold value
detection
discrimination
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
JP7320579A
Other languages
Japanese (ja)
Other versions
JPS596094B2 (en
Inventor
Yasuo Sato
Takayuki Ooyama
Hidekazu Shiratori
Minoru Iwata
Ryuichiro Oota
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP7320579A priority Critical patent/JPS596094B2/en
Publication of JPS55165081A publication Critical patent/JPS55165081A/en
Publication of JPS596094B2 publication Critical patent/JPS596094B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/35—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users
    • H04H60/37—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for identifying segments of broadcast information, e.g. scenes or extracting programme ID
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/12—Arrangements for observation, testing or troubleshooting
    • H04H20/14—Arrangements for observation, testing or troubleshooting for monitoring programmes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/28—Arrangements for simultaneous broadcast of plural pieces of information
    • H04H20/30—Arrangements for simultaneous broadcast of plural pieces of information by a single channel
    • H04H20/31—Arrangements for simultaneous broadcast of plural pieces of information by a single channel using in-band signals, e.g. subsonic or cue signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)

Abstract

PURPOSE:To enable the detection of identification information without detection error against the reception level haing various broad range, by providing the discrimination signal with a pluraity of threshold value different from each other for independent detection and judgement. CONSTITUTION:The L/M channel frequency is picked up, which the identification signal is superimposed from the multiplex broadcast received, the pulse signal obtained through BPFs 561-563 of the sub-channels f1-f3 is converted into a digital signal to compare it with the specified threshold value. The output signal is fed to the microprocessor MPU 65 and it is compared at the comparison circuit 64 with the bits corresponding to the discrimination signal pattern, and if the different bit number is less than the specified value, it is judged that the discrimination signal is detected. The output of the comparison circuit 64 is fed to the threshold value control circuit 61 as the control signal for the threshold value and fed to MPU 65, and the respective identifying digital signal is fed to the computer center 4.
JP7320579A 1979-06-11 1979-06-11 Broadcast confirmation signal detection method Expired JPS596094B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7320579A JPS596094B2 (en) 1979-06-11 1979-06-11 Broadcast confirmation signal detection method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7320579A JPS596094B2 (en) 1979-06-11 1979-06-11 Broadcast confirmation signal detection method

Publications (2)

Publication Number Publication Date
JPS55165081A true JPS55165081A (en) 1980-12-23
JPS596094B2 JPS596094B2 (en) 1984-02-09

Family

ID=13511410

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7320579A Expired JPS596094B2 (en) 1979-06-11 1979-06-11 Broadcast confirmation signal detection method

Country Status (1)

Country Link
JP (1) JPS596094B2 (en)

Also Published As

Publication number Publication date
JPS596094B2 (en) 1984-02-09

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