JPS566581A - Television synchronizing broadcast device - Google Patents

Television synchronizing broadcast device

Info

Publication number
JPS566581A
JPS566581A JP8230079A JP8230079A JPS566581A JP S566581 A JPS566581 A JP S566581A JP 8230079 A JP8230079 A JP 8230079A JP 8230079 A JP8230079 A JP 8230079A JP S566581 A JPS566581 A JP S566581A
Authority
JP
Japan
Prior art keywords
circuit
output
transmission
counter
frequency
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
JP8230079A
Other languages
Japanese (ja)
Inventor
Masaaki Sasada
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP8230079A priority Critical patent/JPS566581A/en
Publication of JPS566581A publication Critical patent/JPS566581A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/38—Transmitter circuitry for the transmission of television signals according to analogue transmission standards

Landscapes

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

Abstract

PURPOSE:To obtain the steady offset effect immediately when the transmission is restarted, by securing the high-accuracy frequency control via the reversible counter and the D/A converter and then storing the control data by the counter even through the transmission of other stations or the self-station may be discontinued. CONSTITUTION:Both the frequency of the self-station's transmission signal and the transmission frequencies of other stations are received by antenna 1, and the frequency difference is detected by frequency difference detecting circuit 2. And the output according to the frequency difference is applied to the 1st and 2nd low band filter trigger circuits 12a and 12b each, and the output of circit 12b is applied to reversible counter 16 via latch circuit 13. At the same time, the output of circuit 12a is applied to circuit 13 and FF14, and the output of FF14 is applied to counter 16. On the other hand, the output of TV signal generating circuit 5 is applied to FF14 via cycle isolating circuit 15. And the addition/subtraction is given via counter 16 to the horizontal erasion signal sent from circuit 15 for the period during which circuit 2 produces the output and according to the polarity of the output. Then the count value of counter 16 receives the D/A conversion to be converted into the the digital value. And the control is given to transmission frequency oscillator 4 to then give the control to the transmission frequency of the self-station.
JP8230079A 1979-06-27 1979-06-27 Television synchronizing broadcast device Pending JPS566581A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8230079A JPS566581A (en) 1979-06-27 1979-06-27 Television synchronizing broadcast device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8230079A JPS566581A (en) 1979-06-27 1979-06-27 Television synchronizing broadcast device

Publications (1)

Publication Number Publication Date
JPS566581A true JPS566581A (en) 1981-01-23

Family

ID=13770695

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8230079A Pending JPS566581A (en) 1979-06-27 1979-06-27 Television synchronizing broadcast device

Country Status (1)

Country Link
JP (1) JPS566581A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100448279C (en) * 2005-07-14 2008-12-31 乐金电子(中国)研究开发中心有限公司 Method and terminal for receiving a digital multimedia broadcast

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100448279C (en) * 2005-07-14 2008-12-31 乐金电子(中国)研究开发中心有限公司 Method and terminal for receiving a digital multimedia broadcast

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