JPS5631279A - Automatic preset channel selecting circuit of color television receiver - Google Patents

Automatic preset channel selecting circuit of color television receiver

Info

Publication number
JPS5631279A
JPS5631279A JP10725679A JP10725679A JPS5631279A JP S5631279 A JPS5631279 A JP S5631279A JP 10725679 A JP10725679 A JP 10725679A JP 10725679 A JP10725679 A JP 10725679A JP S5631279 A JPS5631279 A JP S5631279A
Authority
JP
Japan
Prior art keywords
signal
video
switch
output
channel selecting
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
JP10725679A
Other languages
Japanese (ja)
Inventor
Nobuhiro Saruwatari
Osanori Watanabe
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 JP10725679A priority Critical patent/JPS5631279A/en
Publication of JPS5631279A publication Critical patent/JPS5631279A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • H04N9/70—Circuits for processing colour signals for colour killing

Landscapes

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

Abstract

PURPOSE:To prevent a generated spurious from being decided as a regular video carrier erroneously, by interrupting the synchronizing separation signal and the horizontal fly-back pulse signal by the color killer signal. CONSTITUTION:In case that the preset button is depressed, the tuning voltage applied to tuner 2 is changed to start sweep of the receiving frequency, and sweep of the receiving frequency is stopped when tuner 2 receives the color television broadcast signal. In this automatic preset automatic channel selecting unit, it is decided by color killer signal deciding circuit 62 whether video.chroma amplifying circuit 5 has detected the burst signal in the composite video signal which is the output signal of video detector 4 or not; and if video.chroma amplifying circuit 5 has detected the burst signal, a signal to make switch 61 close is output to switch 61; and if not, a signal to make switch 61 open is output to switch 61.
JP10725679A 1979-08-24 1979-08-24 Automatic preset channel selecting circuit of color television receiver Pending JPS5631279A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10725679A JPS5631279A (en) 1979-08-24 1979-08-24 Automatic preset channel selecting circuit of color television receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10725679A JPS5631279A (en) 1979-08-24 1979-08-24 Automatic preset channel selecting circuit of color television receiver

Publications (1)

Publication Number Publication Date
JPS5631279A true JPS5631279A (en) 1981-03-30

Family

ID=14454433

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10725679A Pending JPS5631279A (en) 1979-08-24 1979-08-24 Automatic preset channel selecting circuit of color television receiver

Country Status (1)

Country Link
JP (1) JPS5631279A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS645899A (en) * 1987-06-29 1989-01-10 Tsukioka Hakuou Kk Manufacture of decorating

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS645899A (en) * 1987-06-29 1989-01-10 Tsukioka Hakuou Kk Manufacture of decorating

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