JPS55109092A - Reference pulse extracting system - Google Patents

Reference pulse extracting system

Info

Publication number
JPS55109092A
JPS55109092A JP1618679A JP1618679A JPS55109092A JP S55109092 A JPS55109092 A JP S55109092A JP 1618679 A JP1618679 A JP 1618679A JP 1618679 A JP1618679 A JP 1618679A JP S55109092 A JPS55109092 A JP S55109092A
Authority
JP
Japan
Prior art keywords
signal
output
reference pulse
burst
terminal
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
JP1618679A
Other languages
Japanese (ja)
Inventor
Shuji Usui
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 Denshi KK
Original Assignee
Hitachi Denshi KK
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 Denshi KK filed Critical Hitachi Denshi KK
Priority to JP1618679A priority Critical patent/JPS55109092A/en
Publication of JPS55109092A publication Critical patent/JPS55109092A/en
Pending legal-status Critical Current

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  • Synchronizing For Television (AREA)

Abstract

PURPOSE: To eliminate the incapability for extraction of the reference pulse by detecting the piling position of the color burst signal and thus varying the phase of the horizontal synchronous signal.
CONSTITUTION: Color TV signal 22 applied to terminal 20 is then applied to synchronous signal isolator circuit 24 as well as to burst signal gate circuit 26. Horizontal synchronous signal 3 separated through circuit 24 is applied to burst gate pulse generator 28 plus multi-vibrators MV5 and MV30 each. The output of generator 28 drives burst gate circuit 26 to obtain color burst signal 9. Level detector 32 delivers detection signal 34 when the level of signal 9 becomes higher than the set value. Signal 34, output 35 of MV5 and reference subcarrier signal 40 sent from terminal 38 are applied to phase difference detector 36, thus obtaining the difference of between, the standard reference pulse and them extraction phase. Output 37 of detector 36 is applied to MV30, and the output 42 is applied to reference pulse extractor 11. And the reference pulse is extracted via output 42 and signal 9 to be taken out to terminal 13.
COPYRIGHT: (C)1980,JPO&Japio
JP1618679A 1979-02-16 1979-02-16 Reference pulse extracting system Pending JPS55109092A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1618679A JPS55109092A (en) 1979-02-16 1979-02-16 Reference pulse extracting system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1618679A JPS55109092A (en) 1979-02-16 1979-02-16 Reference pulse extracting system

Publications (1)

Publication Number Publication Date
JPS55109092A true JPS55109092A (en) 1980-08-21

Family

ID=11909477

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1618679A Pending JPS55109092A (en) 1979-02-16 1979-02-16 Reference pulse extracting system

Country Status (1)

Country Link
JP (1) JPS55109092A (en)

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