[go: up one dir, main page]

JPS55161477A - Projection television unit - Google Patents

Projection television unit

Info

Publication number
JPS55161477A
JPS55161477A JP6842079A JP6842079A JPS55161477A JP S55161477 A JPS55161477 A JP S55161477A JP 6842079 A JP6842079 A JP 6842079A JP 6842079 A JP6842079 A JP 6842079A JP S55161477 A JPS55161477 A JP S55161477A
Authority
JP
Japan
Prior art keywords
blanking
pulses
make
synchronizing
apply
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
JP6842079A
Other languages
Japanese (ja)
Inventor
Toshitaka Yukimoto
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 Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP6842079A priority Critical patent/JPS55161477A/en
Publication of JPS55161477A publication Critical patent/JPS55161477A/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
    • H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Transforming Electric Information Into Light Information (AREA)

Abstract

PURPOSE:To make it possible to erase part protruded from the effective screen, by obtaining independently blanking pulses, which apply blanking to the picture, from the synchronizing signal. CONSTITUTION:Horizontal and vertical synchronizing signals obtained by synchronizing separating circuit 10 are taken out and are applied to the first monostable multivibrators 13H and 13V as variable delay circuits to make it possible to delay them by an arbitrary time, and outputs are applied to the second monostable multivibrators 14H and 14V as blanking pulse generating circuits to generate prescribed- pulse width horizontal and vertical blanking pulses 13H and 13V in delayed positions, and these pulses are applied to the matrix circuit to apply blanking to the video signal.
JP6842079A 1979-05-31 1979-05-31 Projection television unit Pending JPS55161477A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6842079A JPS55161477A (en) 1979-05-31 1979-05-31 Projection television unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6842079A JPS55161477A (en) 1979-05-31 1979-05-31 Projection television unit

Publications (1)

Publication Number Publication Date
JPS55161477A true JPS55161477A (en) 1980-12-16

Family

ID=13373166

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6842079A Pending JPS55161477A (en) 1979-05-31 1979-05-31 Projection television unit

Country Status (1)

Country Link
JP (1) JPS55161477A (en)

Similar Documents

Publication Publication Date Title
US2166688A (en) Television apparatus
US4396939A (en) Chromakey effect apparatus
JPS5636280A (en) Video signal cipher processing system
US3818130A (en) Reading pacer for educational television
US3342937A (en) Synchronizing of electron beam scanning in a narrow bandwidth pseudorandom dot scan television system
JPS55161477A (en) Projection television unit
JPS53101932A (en) Color television picture receiver
JPS5437528A (en) Processing circuit for video signal
GB735541A (en) Improvements in coding arrangement for a television transmitter or receiver
US2615979A (en) Composite sync dissector
AU4196668A (en) Circuit for adjusting the colour hue ofa picture generated bya pal colour television receiver
GB912312A (en) Improvements in and relating to colour television and like apparatus
US3027422A (en) Television synchronizing system
JPS54154215A (en) Television character multiple broadcast transmitting- receiving device
JPS52144224A (en) Tv picture receiver
JPS53145522A (en) Beam index type color television picture receiver
AU427810B2 (en) Circuit for correcting line switching phase ina pal colour television receiver
JPS55644A (en) Television picture receiver
JPS55130272A (en) Deflecting circuit device
JPS5397725A (en) Television picture receiver possessing waveform display function
JPS5666981A (en) Color frame synchronizing system
AU427866B2 (en) Circuit for correcting the switching phase ofthe line frequency switch'ina secam colour television receiver
JPS5648759A (en) Vertical synchronism detecting circuit
JPS5648760A (en) Vertical synchronism detecting circuit
AU5932869A (en) Synchronising circuit forthe horizontal deflection ina television receiver