JPS5717269A - Display device for information television at home - Google Patents

Display device for information television at home

Info

Publication number
JPS5717269A
JPS5717269A JP9250380A JP9250380A JPS5717269A JP S5717269 A JPS5717269 A JP S5717269A JP 9250380 A JP9250380 A JP 9250380A JP 9250380 A JP9250380 A JP 9250380A JP S5717269 A JPS5717269 A JP S5717269A
Authority
JP
Japan
Prior art keywords
vertical
video
horizontal
phase
synchronizing
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
JP9250380A
Other languages
Japanese (ja)
Inventor
Magozo Shoji
Hiroyoshi Yuasa
Koichi Omura
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works 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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP9250380A priority Critical patent/JPS5717269A/en
Publication of JPS5717269A publication Critical patent/JPS5717269A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Synchronizing For Television (AREA)

Abstract

PURPOSE:To prevent the oscillation of display being superimposed, by comparing the phase individually between the vertical and horizontal synchronizing signal of both video and superimposing use video signals, in synchronizing them. CONSTITUTION:A vertical synchronizing signal (e) and a horizontal synchronizing signal (m) are separated from a video signal (d) in television broadcast and they are inputted to phase comparison sections for vertical and horizontal use of a phase synchronizing circuit 8. A vertical synchronizing signal (g) and a horizontal synchronizing signal (n) of a video signal for superimposition are separated at the 2nd synchronous separation circuit 7 and they are inputted to the phase comparison sections for vertical and horizontal use at a phase synchronizing circuit 8 similarly. In superimposing the information at home to an output picture of a video deck 30, the output of the video deck 30 is inputted with a tuner 26.
JP9250380A 1980-07-07 1980-07-07 Display device for information television at home Pending JPS5717269A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9250380A JPS5717269A (en) 1980-07-07 1980-07-07 Display device for information television at home

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9250380A JPS5717269A (en) 1980-07-07 1980-07-07 Display device for information television at home

Publications (1)

Publication Number Publication Date
JPS5717269A true JPS5717269A (en) 1982-01-28

Family

ID=14056105

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9250380A Pending JPS5717269A (en) 1980-07-07 1980-07-07 Display device for information television at home

Country Status (1)

Country Link
JP (1) JPS5717269A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2536929A1 (en) * 1982-11-30 1984-06-01 Sony Corp MICROPROCESSOR TELEVISION RECEIVER

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53100722A (en) * 1977-02-15 1978-09-02 Matsushita Electric Works Ltd Informing device for television display
JPS5453818A (en) * 1977-10-06 1979-04-27 Hitachi Denshi Ltd Synchronization combining system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53100722A (en) * 1977-02-15 1978-09-02 Matsushita Electric Works Ltd Informing device for television display
JPS5453818A (en) * 1977-10-06 1979-04-27 Hitachi Denshi Ltd Synchronization combining system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2536929A1 (en) * 1982-11-30 1984-06-01 Sony Corp MICROPROCESSOR TELEVISION RECEIVER

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