JPS5765071A - Television receiver - Google Patents

Television receiver

Info

Publication number
JPS5765071A
JPS5765071A JP55141204A JP14120480A JPS5765071A JP S5765071 A JPS5765071 A JP S5765071A JP 55141204 A JP55141204 A JP 55141204A JP 14120480 A JP14120480 A JP 14120480A JP S5765071 A JPS5765071 A JP S5765071A
Authority
JP
Japan
Prior art keywords
circuit
signal
written
luminance
ratio
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
JP55141204A
Other languages
Japanese (ja)
Inventor
Takeshi Kureha
Minoru Takeda
Taiichi Saeki
Teruo Kataoka
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 JP55141204A priority Critical patent/JPS5765071A/en
Priority to US06/309,850 priority patent/US4414571A/en
Publication of JPS5765071A publication Critical patent/JPS5765071A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
    • H04N7/0117—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level involving conversion of the spatial resolution of the incoming video signal
    • H04N7/012—Conversion between an interlaced and a progressive signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Graphics (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Systems (AREA)

Abstract

PURPOSE:To considerably eliminate the change in luminance accompanied with switching display of both signals, by setting the output ratio of display of a TV signal of the standard system to a TV signal having n-times horizontal scanning frequency as n:1. CONSTITUTION:A demodulatin circuit 3 demodulates a video signal of the standard system applied to an input terminal and supplies it to a signal conversion circuit 3. The supplied signal is written in a memory in the circuit 3. The written signal is read out once in double speed as being written in the next one horizontal scanning period and applied to a luminance set circuit 4. The circuit 4 sets the level of a signal applied to an amplifying circuit 5. On the other hand, to the input terminal, a TV video signal having double scanning line number twice as that of the atandard system is applied. The demodulation circuit 2 demodulates this signal and supplies it to the circuit 4. The ratio of screen luminance is 1:2, when the signal supplied from the circuit 3 and from the circuit 11 displayed respectively. Thus, the circuit 4 is set so as to regulate the amplitude ratio of signals applied to the circuit 5 to 2:1(n:1).
JP55141204A 1980-10-09 1980-10-09 Television receiver Pending JPS5765071A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP55141204A JPS5765071A (en) 1980-10-09 1980-10-09 Television receiver
US06/309,850 US4414571A (en) 1980-10-09 1981-10-08 Television receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55141204A JPS5765071A (en) 1980-10-09 1980-10-09 Television receiver

Publications (1)

Publication Number Publication Date
JPS5765071A true JPS5765071A (en) 1982-04-20

Family

ID=15286558

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55141204A Pending JPS5765071A (en) 1980-10-09 1980-10-09 Television receiver

Country Status (1)

Country Link
JP (1) JPS5765071A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60180286A (en) * 1984-02-27 1985-09-14 Sony Corp Televison receiver
JPS62128680A (en) * 1985-11-29 1987-06-10 Canon Inc Picture output device
US5264934A (en) * 1991-10-02 1993-11-23 Mitsubishi Denki Kabushiki Kaisha Apparatus for adjusting brightness of a display screen based on a detected horizontal sync frequency

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60180286A (en) * 1984-02-27 1985-09-14 Sony Corp Televison receiver
JPS62128680A (en) * 1985-11-29 1987-06-10 Canon Inc Picture output device
US5264934A (en) * 1991-10-02 1993-11-23 Mitsubishi Denki Kabushiki Kaisha Apparatus for adjusting brightness of a display screen based on a detected horizontal sync frequency

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