JPS5518125A - Phase synchronous circuit - Google Patents

Phase synchronous circuit

Info

Publication number
JPS5518125A
JPS5518125A JP9061478A JP9061478A JPS5518125A JP S5518125 A JPS5518125 A JP S5518125A JP 9061478 A JP9061478 A JP 9061478A JP 9061478 A JP9061478 A JP 9061478A JP S5518125 A JPS5518125 A JP S5518125A
Authority
JP
Japan
Prior art keywords
signal
converter
output
circuit
reference phase
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
JP9061478A
Other languages
Japanese (ja)
Other versions
JPS6015190B2 (en
Inventor
Masaaki Kato
Keisuke Ogi
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP53090614A priority Critical patent/JPS6015190B2/en
Publication of JPS5518125A publication Critical patent/JPS5518125A/en
Publication of JPS6015190B2 publication Critical patent/JPS6015190B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Processing Of Color Television Signals (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Synchronizing For Television (AREA)
  • Color Television Systems (AREA)

Abstract

PURPOSE: To obtain the clock signals featuring a highly stable phase for the sampling synchronized with the reference phase signal contained in the analog input signal by detecting the phase error of the clock signal out of the digital signal corresponding to the reference phase signal.
CONSTITUTION: The composite color TV signal supplied to input terminal 20 is converted into the digital signal through A/D converter 21 and then drawn out at output terminal 22. Burst extraction circuit 24 extracts only the digital signal corresponding to the color burst signal among the output signals of converter 21 based on the synchronous signal isolated through synchronous isolator circuit 23. Thus the error is calculated at digital arithmetic circuit 25 to the reference phase difference. The output of circuit 25 is converted into the analog signal through D/A converter 26 and then applied to voltage control oscillator 26 to control the oscillation frequency. And the output of oscillator 26 is supplied to converter 21 in the form of the clock signal.
COPYRIGHT: (C)1980,JPO&Japio
JP53090614A 1978-07-25 1978-07-25 phase locked circuit Expired JPS6015190B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53090614A JPS6015190B2 (en) 1978-07-25 1978-07-25 phase locked circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53090614A JPS6015190B2 (en) 1978-07-25 1978-07-25 phase locked circuit

Publications (2)

Publication Number Publication Date
JPS5518125A true JPS5518125A (en) 1980-02-08
JPS6015190B2 JPS6015190B2 (en) 1985-04-18

Family

ID=14003352

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53090614A Expired JPS6015190B2 (en) 1978-07-25 1978-07-25 phase locked circuit

Country Status (1)

Country Link
JP (1) JPS6015190B2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5883489A (en) * 1981-10-27 1983-05-19 アムペックス　コーポレーション Device for sampling in pal format video information signal and compensating dropout as well as concealing error
JPS58121884A (en) * 1982-01-14 1983-07-20 Kokusai Denshin Denwa Co Ltd <Kdd> Tv video signal band compression transmitter
JPS5970093A (en) * 1982-10-14 1984-04-20 Matsushita Electric Ind Co Ltd Pal type clock phase detector
JPS62226794A (en) * 1986-03-27 1987-10-05 Nec Corp Analog-digital converter
US4914509A (en) * 1987-03-03 1990-04-03 Mitsubishi Denki Kabushiki Kaisha Color video signal synthesizer
JPH02190090A (en) * 1989-01-18 1990-07-26 Nec Ic Microcomput Syst Ltd Color signal synchronizing circuit device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01235556A (en) * 1988-03-16 1989-09-20 Fumio Miyata Production of eel soybean curd

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5883489A (en) * 1981-10-27 1983-05-19 アムペックス　コーポレーション Device for sampling in pal format video information signal and compensating dropout as well as concealing error
JPH0239919B2 (en) * 1981-10-27 1990-09-07 Ampex
JPS58121884A (en) * 1982-01-14 1983-07-20 Kokusai Denshin Denwa Co Ltd <Kdd> Tv video signal band compression transmitter
JPH0560308B2 (en) * 1982-01-14 1993-09-02 Kokusai Denshin Denwa Co Ltd
JPS5970093A (en) * 1982-10-14 1984-04-20 Matsushita Electric Ind Co Ltd Pal type clock phase detector
JPS62226794A (en) * 1986-03-27 1987-10-05 Nec Corp Analog-digital converter
JPH0654990B2 (en) * 1986-03-27 1994-07-20 日本電気株式会社 Analog digital converter
US4914509A (en) * 1987-03-03 1990-04-03 Mitsubishi Denki Kabushiki Kaisha Color video signal synthesizer
USRE34809E (en) * 1987-03-03 1994-12-27 Mitsubishi Denki Kabushiki Kaisha Color video signal synthesizer
JPH02190090A (en) * 1989-01-18 1990-07-26 Nec Ic Microcomput Syst Ltd Color signal synchronizing circuit device

Also Published As

Publication number Publication date
JPS6015190B2 (en) 1985-04-18

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