Digital horizontal flyback control circuit
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 7, 2000
Grant Date -
N/A
app pub date -
Dec 8, 1997
filing date -
Dec 19, 1996
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A digital horizontal flyback control circuit for controlling the horizontal position of a video signal on a monitor screen receives a horizontal drive signal (21) and a flyback signal (22) generated when a video display beam is caused to move from the end of one line of the display to the beginning of a next line by an edge of a pulse of the horizontal drive signal, the flyback pulse being delayed with respect to the horizontal drive signal pulse by a flyback delay period. A measuring circuit (15) measures the flyback delay period and a subtractor circuit (17) subtracts the flyback delay from a set horizontal position (18) representing a desired delay between the flyback pulse and a reference pulse (11). A comparator (19) compares the subtraction value with the value of a clock counter (23) whose count value is reset by the reference pulse (11) and produces a set signal at an output when the subtraction value and the clock count value are the same so as to generate the horizontal drive signal pulse (21).
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully