JPS56149867A - Picture indicator - Google Patents

Picture indicator

Info

Publication number
JPS56149867A
JPS56149867A JP5384680A JP5384680A JPS56149867A JP S56149867 A JPS56149867 A JP S56149867A JP 5384680 A JP5384680 A JP 5384680A JP 5384680 A JP5384680 A JP 5384680A JP S56149867 A JPS56149867 A JP S56149867A
Authority
JP
Japan
Prior art keywords
deflecting
circuit
pulse
horizontal
generated
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.)
Granted
Application number
JP5384680A
Other languages
Japanese (ja)
Other versions
JPS6035871B2 (en
Inventor
Koichiro Kurahashi
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP5384680A priority Critical patent/JPS6035871B2/en
Publication of JPS56149867A publication Critical patent/JPS56149867A/en
Publication of JPS6035871B2 publication Critical patent/JPS6035871B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/30—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical otherwise than with constant velocity or otherwise than in pattern formed by unidirectional, straight, substantially horizontal or vertical lines
    • H04N3/32—Velocity varied in dependence upon picture information

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Details Of Television Scanning (AREA)

Abstract

PURPOSE:To apparently improve the sharpness of a display picture without changing a signal format, by giving a periodical speed modulation having an appropriate amplitude, to a horizontal deflecting circuit, and making a CRT display surface have a dot sampling effect. CONSTITUTION:A vertical pulse and a horizontal pulse are generated by the synchronizing circuit 3 in the same way as TV, are provided to the vertical deflecting circuit 4 and the horizontal deflecting circuit 5, and also a clock pulse 31 to be provided to the auxiliary deflecting circuit 6 is generated. This pulse 31 is made frequency fs which is higher than the maximum frequency fm of a video signal, and also its phase is locked to horizontal scanning. The auxiliary deflecting circuit 6 receives the pulse 31, generates an auxiliary deflecting current 61 having a saw tooth waveform which is equal to its period Ts, superposes this deflecting current 61 onto a horizontal deflecting current which has been generated by the deflecting circuit 5, and provides it to the deflecting yoke 7. And, the sharpness of a display picture is elevated apparently without changing a signal format from the video amplifier 2, by making the display surface displayed on the CRT10 have a dot sampling effect.
JP5384680A 1980-04-22 1980-04-22 image display device Expired JPS6035871B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5384680A JPS6035871B2 (en) 1980-04-22 1980-04-22 image display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5384680A JPS6035871B2 (en) 1980-04-22 1980-04-22 image display device

Publications (2)

Publication Number Publication Date
JPS56149867A true JPS56149867A (en) 1981-11-19
JPS6035871B2 JPS6035871B2 (en) 1985-08-16

Family

ID=12954130

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5384680A Expired JPS6035871B2 (en) 1980-04-22 1980-04-22 image display device

Country Status (1)

Country Link
JP (1) JPS6035871B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60223381A (en) * 1984-04-20 1985-11-07 Hitachi Ltd Scanning speed modulating circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60223381A (en) * 1984-04-20 1985-11-07 Hitachi Ltd Scanning speed modulating circuit
JPH0414829B2 (en) * 1984-04-20 1992-03-16 Hitachi Ltd

Also Published As

Publication number Publication date
JPS6035871B2 (en) 1985-08-16

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