Title:
【発明の名称】疑似同期信号発生装置
Document Type and Number:
Japanese Patent JP2584063
Kind Code:
B2
Abstract:
PURPOSE:To adjust a screen display position by generating a saw-tooth wave which leads by a constant phase and has a constant tilt angle, comparing its amplitude with a threshold value which can be set optionally from outside and generating a pseudo synchronizing signal which has a phase difference from a synchronizing signal corresponding to the threshold value. CONSTITUTION:This device is equipped with saw-tooth wave generating means 12 - 14 which generate the saw-tooth wave which has the constant tilt angle to obtain the pseudo synchronizing signal determining the screen display position and has a synchronizing signal period while the wave is advanced by the constant phase and voltage amplitude comparing means 20 and 21 which compare the output saw-tooth wave with the externally settable threshold value and generates the pseudo synchronizing signal having the phase difference from the synchronizing signal corresponding to the threshold value. Consequently, the screen display position can be adjusted with desired resolution irrelevantly to a deflection frequency.
Inventors:
KUMAMOTO SHINGO
Application Number:
JP19867289A
Publication Date:
February 19, 1997
Filing Date:
July 29, 1989
Export Citation:
Assignee:
NIPPON DENKI HOOMU EREKUTORONIKUSU KK
International Classes:
H04N5/06; G09G1/00; G09G1/04; G09G1/16; G09G5/18; H04N3/227; H04N3/27; (IPC1-7): G09G5/18; G09G1/00; G09G1/16; H04N3/227; H04N3/27; H04N5/06
Domestic Patent References:
| JP254678A | ||||
| JP632421A |