JPS5648766A - Two-screen television receiver - Google Patents

Two-screen television receiver

Info

Publication number
JPS5648766A
JPS5648766A JP12407179A JP12407179A JPS5648766A JP S5648766 A JPS5648766 A JP S5648766A JP 12407179 A JP12407179 A JP 12407179A JP 12407179 A JP12407179 A JP 12407179A JP S5648766 A JPS5648766 A JP S5648766A
Authority
JP
Japan
Prior art keywords
field
subordinate screen
subordinate
address
still picture
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
JP12407179A
Other languages
Japanese (ja)
Inventor
Tokuzo Fujii
Hitoshi Miyagawa
Tomomitsu Azeyanagi
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 JP12407179A priority Critical patent/JPS5648766A/en
Publication of JPS5648766A publication Critical patent/JPS5648766A/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
    • H04N5/445—Receiver circuitry for the reception of television signals according to analogue transmission standards for displaying additional information
    • H04N5/45—Picture in picture, e.g. displaying simultaneously another television channel in a region of the screen

Landscapes

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

Abstract

PURPOSE:To prevent different picture contents from appearing at the upper and lower of a still picture on a subordinate screen, by stopping write operation during the period between the end of write operation of a one-field subordinate screen video signal in a field memory and the start of rewrite operation. CONSTITUTION:With still switch 17 closed, the voltage of electric power source 19 is applied to latch circuit 18 to supply a high-level output to address generating circuit 15. At this time, address generating circuit 15 stops address supply for transfer from the line memory to the field memory and generates a readout address of the field memory, so that a subordinate screen video signal of a field before the output of latch circuit 18 is supplied will be supplied to subordinate screen inserting circuit 5 as a field-by-field contracted subordinate screen image. As a result. a still picture is projected on cathode-ray tube 7. Thus, there is no possibility that the still picture on the subordinate screen is patchy.
JP12407179A 1979-09-28 1979-09-28 Two-screen television receiver Pending JPS5648766A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12407179A JPS5648766A (en) 1979-09-28 1979-09-28 Two-screen television receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12407179A JPS5648766A (en) 1979-09-28 1979-09-28 Two-screen television receiver

Publications (1)

Publication Number Publication Date
JPS5648766A true JPS5648766A (en) 1981-05-02

Family

ID=14876214

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12407179A Pending JPS5648766A (en) 1979-09-28 1979-09-28 Two-screen television receiver

Country Status (1)

Country Link
JP (1) JPS5648766A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6221381A (en) * 1985-07-19 1987-01-29 Matsushita Electric Ind Co Ltd Two screen television receiver
JPS6235783A (en) * 1985-08-08 1987-02-16 Matsushita Electric Ind Co Ltd Television receiver
US5317399A (en) * 1990-05-09 1994-05-31 Canon Kabushiki Kaisha Image reproducing apparatus capable of freezing a displayed image
US5895123A (en) * 1991-09-03 1999-04-20 Canon Kabushiki Kaisha Information recording/reproduction apparatus for reproducing picture and audio signals in synchronization

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5498116A (en) * 1978-01-19 1979-08-02 Sharp Corp Television receiver

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5498116A (en) * 1978-01-19 1979-08-02 Sharp Corp Television receiver

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6221381A (en) * 1985-07-19 1987-01-29 Matsushita Electric Ind Co Ltd Two screen television receiver
JPH0564911B2 (en) * 1985-07-19 1993-09-16 Matsushita Electric Ind Co Ltd
JPS6235783A (en) * 1985-08-08 1987-02-16 Matsushita Electric Ind Co Ltd Television receiver
US5317399A (en) * 1990-05-09 1994-05-31 Canon Kabushiki Kaisha Image reproducing apparatus capable of freezing a displayed image
US5895123A (en) * 1991-09-03 1999-04-20 Canon Kabushiki Kaisha Information recording/reproduction apparatus for reproducing picture and audio signals in synchronization

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