Patent · US Expired

Method of synchronizing the horizontal deflection of electron beams in television receivers

US4992872A · kind A · utility

6Cited by

5References

7Claims

0Family size

Assignee

Deutsche Thomson-Brandt GmbH · DE

Inventors

Uwe Hartmann · Stuttgart, DE
Udo Mai · Hauzenberg, DE
Fritz Ohnemus · Villingen-Schwenningen, DE

Key dates

Filing date	Feb 19, 1988
Grant date	Feb 12, 1991
Priority date	—
Expiry date	Feb 19, 2008

Classification

Technology area (CPC H)Electricity
CPC primaryH04N5/45
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A process for synchronizing horizontal deflection of electron beams in television recievers having a reproduced picture with a visible component, when no transmission signals from a television transmitter are present. If an emitted signal is not available, the synchronization is suspended during the time of the visible picture trace, and is activated only during the picture blanking time. For this purpose, the procedure is to switch off a circuit that synchronizes horizontal deflection during the visible component of the reproduced picture. A synchronization circuit is activated only while the picture is being blanked.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.