Processing

Please wait...

Settings

Settings

Goto Application

1. WO2000030344 - METHOD AND APPARATUS FOR CORRECTING THE IMAGE PROFILE

Publication Number WO/2000/030344
Publication Date 25.05.2000
International Application No. PCT/CN1999/000189
International Filing Date 15.11.1999
Chapter 2 Demand Filed 14.06.2000
IPC
H04N 3/233 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
3Scanning details of television systems; Combination thereof with generation of supply voltages
10by means not exclusively optical-mechanical
16by deflecting electron beam in cathode-ray tube
22Circuits for controlling dimensions, shape or centering of picture on screen
23Distortion correction, e.g. for pincushion distortion correction, S-correction
233using active elements
CPC
H04N 3/2335
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
3Scanning details of television systems; Combination thereof with generation of supply voltages
10by means not exclusively optical-mechanical
16by deflecting electron beam in cathode-ray tube ; , e.g. scanning corrections
22Circuits for controlling dimensions, shape or centering of picture on screen
23Distortion correction, e.g. for pincushion distortion correction, S-correction
233using active elements
2335with calculating means
Applicants
  • LU, Wenjun [CN]/[CN]
Inventors
  • LU, Wenjun
Agents
  • LUNG TIN INTERNATIONAL PATENT & TRADEMARK AGENT LTD.
Priority Data
98 1 17033.115.11.1998CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) METHOD AND APPARATUS FOR CORRECTING THE IMAGE PROFILE
(FR) PROCEDE ET APPAREIL DE CORRECTION DU PROFIL D'IMAGE
Abstract
(EN)
The method and apparatus for eliminating the 'sawtooth' effect of the image profile during the scanning of the picture are disclosed. By using the sub-vertical deflection correcting signal which corresponds to the direction and slope of the image profile, the scanning is made along the edge of the profile. The apparatus consists of the profile detector, generator of sub-vertical deflection correcting signal, driving circuit, sub-vertical deflecting coil and the delay circuit.
(FR)
L'invention concerne un procédé et un appareil d'élimination d'effet 'de dent de scie' du profil d'image pendant le balayage de l'image. On utilise le signal de correction de déflexion verticale correspondant à la direction et aux irrégularités du profil de l'image afin de balayer le long du bord du profil. L'appareil est constitué d'un détecteur de profil, d'un générateur de signal de correction de déflexion, d'une bobine de déflexion verticale et d'un circuit de temporisation.
Also published as
Latest bibliographic data on file with the International Bureau