JPS55153484A - Interlace correction circuit for two screen television receiver - Google Patents

Interlace correction circuit for two screen television receiver

Info

Publication number
JPS55153484A
JPS55153484A JP6042179A JP6042179A JPS55153484A JP S55153484 A JPS55153484 A JP S55153484A JP 6042179 A JP6042179 A JP 6042179A JP 6042179 A JP6042179 A JP 6042179A JP S55153484 A JPS55153484 A JP S55153484A
Authority
JP
Japan
Prior art keywords
field
signal
correction
slave screen
interlace
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
JP6042179A
Other languages
Japanese (ja)
Other versions
JPS6222506B2 (en
Inventor
Takuya Imaide
Tomomitsu Azeyanagi
Michio Masuda
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 Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP6042179A priority Critical patent/JPS55153484A/en
Publication of JPS55153484A publication Critical patent/JPS55153484A/en
Publication of JPS6222506B2 publication Critical patent/JPS6222506B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/30—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical otherwise than with constant velocity or otherwise than in pattern formed by unidirectional, straight, substantially horizontal or vertical lines
    • H04N3/34—Elemental scanning area oscillated rapidly in direction transverse to main scanning direction

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)

Abstract

PURPOSE:To obtain an excellent video quality without unevenness, by correct interlace at the head of a slave screen, detecting the field of content of picture changed on its way of the slave screen, and correcting the address so that correct interlace can be made. CONSTITUTION:A 0 field signal output 122 of a field polarity detecting circuit 641 of a slave screen video signal, an E field signal output 121 of a field polarity detecting circuit 642 of a television video signal, and a timing (t) signal output 124 are logically summed, and the result is input to a write-in address delay circuit 643 to correct the interlace. Next, in case of correction on the way of a slave screen, the signal whether or not the correction is made at the head of the slave screen is formed at a correction presence detecting circuit 648, it is input to a polarity selecting circuit 647, and if the correction is present, an E field signal is output as a selected polarity signal 126 and if absent, a 0 field signal is output for correction.
JP6042179A 1979-05-18 1979-05-18 Interlace correction circuit for two screen television receiver Granted JPS55153484A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6042179A JPS55153484A (en) 1979-05-18 1979-05-18 Interlace correction circuit for two screen television receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6042179A JPS55153484A (en) 1979-05-18 1979-05-18 Interlace correction circuit for two screen television receiver

Publications (2)

Publication Number Publication Date
JPS55153484A true JPS55153484A (en) 1980-11-29
JPS6222506B2 JPS6222506B2 (en) 1987-05-18

Family

ID=13141718

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6042179A Granted JPS55153484A (en) 1979-05-18 1979-05-18 Interlace correction circuit for two screen television receiver

Country Status (1)

Country Link
JP (1) JPS55153484A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987000715A1 (en) * 1985-07-19 1987-01-29 Matsushita Electric Industrial Co., Ltd. Two-screen tv receiver
JPS62176275A (en) * 1986-01-29 1987-08-03 Nec Home Electronics Ltd Parent child image display device
JPS6324767A (en) * 1986-06-10 1988-02-02 コーニンクレッカ　フィリップス　エレクトロニクス　エヌ　ヴィ Television image display
FR2611103A1 (en) * 1987-02-17 1988-08-19 Rca Corp INVERTING INTERLACE DETECTION FOR IMAGE IMAGE VIDEO SIGNAL GENERATOR
JPH01132281A (en) * 1986-12-29 1989-05-24 Philips Gloeilampenfab:Nv Television receiver

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54156420A (en) * 1978-05-31 1979-12-10 Nec Home Electronics Ltd Interlace control circuit for television receivers

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54156420A (en) * 1978-05-31 1979-12-10 Nec Home Electronics Ltd Interlace control circuit for television receivers

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987000715A1 (en) * 1985-07-19 1987-01-29 Matsushita Electric Industrial Co., Ltd. Two-screen tv receiver
US4816915A (en) * 1985-07-19 1989-03-28 Matsushita Electric Industrial Co., Ltd. Two-picture television receiver
DE3690375C2 (en) * 1985-07-19 1989-08-17 Matsushita Electric Industrial Co., Ltd., Kadoma, Osaka, Jp
JPS62176275A (en) * 1986-01-29 1987-08-03 Nec Home Electronics Ltd Parent child image display device
JPS6324767A (en) * 1986-06-10 1988-02-02 コーニンクレッカ　フィリップス　エレクトロニクス　エヌ　ヴィ Television image display
JP2928803B2 (en) * 1986-06-10 1999-08-03 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Television image display
JPH01132281A (en) * 1986-12-29 1989-05-24 Philips Gloeilampenfab:Nv Television receiver
FR2611103A1 (en) * 1987-02-17 1988-08-19 Rca Corp INVERTING INTERLACE DETECTION FOR IMAGE IMAGE VIDEO SIGNAL GENERATOR
GB2201317B (en) * 1987-02-17 1991-07-17 Rca Licensing Corp Picture-in-picture video signal generator

Also Published As

Publication number Publication date
JPS6222506B2 (en) 1987-05-18

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