Title:
SYNCHRONIZING CIRCUIT
Document Type and Number:
Japanese Patent JPS6282776
Kind Code:
A
Abstract:
PURPOSE:To prevent deviation on a screen by regarding a timing deviated from the estimated timing of the synchronizing signal of an asynchronizing system by the deviation in a deviating direction from a window as the synchronizing signal timing of the next asynchronizing system so as to control the synchronizing system. CONSTITUTION:When an external horizontal synchronizing signal EXHSY is deviated from a window adjacently, the signal is shifted by a prescribed quantity in a direction deviating the window for correction. When the signal is deviated furthermore, the external horizontal synchronizing signal EXHSY is corrected so as to come to the center of the window. Thus, it is possible to lock the window to the center of jitter and even when the jitter exceeds the absorption limit, the change in the period of a horizontal synchronizing signal in the synchronizing system is less and the period changes smoothly, then the deviation on the screen is unremarkable.
Inventors:
NARISAWA SADAYUKI
Application Number:
JP10265386A
Publication Date:
April 16, 1987
Filing Date:
May 02, 1986
Export Citation:
Assignee:
NIPPON MUSICAL INSTRUMENTS MFG
International Classes:
H04N9/475; H04N5/06; H04N5/073; H04N5/278; (IPC1-7): H04N5/073; H04N5/278; H04N9/475
Attorney, Agent or Firm:
Kunihiko Kato