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:
Oct. 13, 1998

Filed:

May. 26, 1995
Applicant:
Inventor:

Michael John Shay, Arlington, TX (US);

Assignee:

National Semiconductor Corporation, Santa Clara, CA (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09G / ;
U.S. Cl.
CPC ...
345 99 ; 345213 ;
Abstract

A clock generation circuit for a display controller includes an intermediate dot clock generation circuit which receives an input clock signal and in response thereto generates an intermediate dot clock signal having a plurality of dot clock pulses. A row pulse generation circuit is coupled to the intermediate dot clock generation circuit and counts the intermediate dot clock signal dot clock pulses and generates a row pulse after a predetermined number of dot clock pulses and a programmable offset time. The row pulse generation circuit also generates a final dot clock signal by masking the intermediate dot clock signal with the programmable offset time after the predetermined number of dot clock pulses. A method of adjusting a rate at which data is transferred to a display screen is also disclosed.


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