The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Jan. 06, 1976

Filed:

Dec. 13, 1974
Applicant:
Inventor:

Francis C Marino, Dix Hills, NY (US);

Assignee:

Redactron Corporation, Hauppauge, NY (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
315384 ; 315408 ; 315410 ;
Abstract

The current flowing through the horizontal deflection coil of a cathod ray tube is controlled by a transistor which is switched between saturation and cut off by a circuit having a pulse generator for generating a pulse in response to a horizontal synchronizing pulse. The leading edge of the generated pulse is delayed before being applied to the controlling transistor which switches sometime thereafter due to the storage time of the transistor. To insure that the blanking of the electron beam of the tube takes place during the retrace time, the blanking interval is set to occur a period of time after the horizontal synchronizing signal which is less than the sum of the storage time of the transistor and the time which the leading edge of the generated pulse is delayed.


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