JPS54139335A - Phase error correcting circuit of index signal - Google Patents

Phase error correcting circuit of index signal

Info

Publication number
JPS54139335A
JPS54139335A JP4887078A JP4887078A JPS54139335A JP S54139335 A JPS54139335 A JP S54139335A JP 4887078 A JP4887078 A JP 4887078A JP 4887078 A JP4887078 A JP 4887078A JP S54139335 A JPS54139335 A JP S54139335A
Authority
JP
Japan
Prior art keywords
signal
signals
phase error
inputted
output
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
JP4887078A
Other languages
Japanese (ja)
Inventor
Morihiro Kubo
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo 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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP4887078A priority Critical patent/JPS54139335A/en
Publication of JPS54139335A publication Critical patent/JPS54139335A/en
Pending legal-status Critical Current

Links

Landscapes

  • Video Image Reproduction Devices For Color Tv Systems (AREA)

Abstract

PURPOSE: To obtain a circuit which corrects the phase error of ID signals suitably, by generating the phase error of index ID signals falsely by a monostable multivibrator in a beam index-type color TV receiver.
CONSTITUTION: The output of fixed-frequency pulse oscillator 13 is inputted to the first tuning amplifier 14 to generate sine wave signal f1. The output of monostable multivibrator 15 which is triggerred by the pulse of oscillator 13 and is controlled by a monochromatic (M) signal is inputted to the second tuning amplifier 16, and sine wave signals of frequency f2 are generated from amplifier 16 and are inputted to difference frequency converter 18. since monostable multivibrator 15 outputs signals of a narrow pulse width and a wide pulse width in case of a large M signal and a small M signal respectively, signal f2 has the phase advanced in case of a large M signal and delayed in case of a small M signal. ID signals of frequency fi from terminal 21 become sine wave signal fi in the third tuning amplifier 17 and are inputted to converter 18 to obtain output signal fi-f2. The output of converter 18 is added to sum frequency converter 19 together with signal f1 to obtain signal fi+f1-f2 with phase error eliminated, and this signal is combined with video signals by combining circuit 9.
COPYRIGHT: (C)1979,JPO&Japio
JP4887078A 1978-04-20 1978-04-20 Phase error correcting circuit of index signal Pending JPS54139335A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4887078A JPS54139335A (en) 1978-04-20 1978-04-20 Phase error correcting circuit of index signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4887078A JPS54139335A (en) 1978-04-20 1978-04-20 Phase error correcting circuit of index signal

Publications (1)

Publication Number Publication Date
JPS54139335A true JPS54139335A (en) 1979-10-29

Family

ID=12815313

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4887078A Pending JPS54139335A (en) 1978-04-20 1978-04-20 Phase error correcting circuit of index signal

Country Status (1)

Country Link
JP (1) JPS54139335A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4333105A (en) * 1979-08-22 1982-06-01 Hitachi, Ltd. Beam-indexing color television receiver

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4333105A (en) * 1979-08-22 1982-06-01 Hitachi, Ltd. Beam-indexing color television receiver

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