Projector discharge lamp current controller with a four time slot period
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 30, 2014
Issued Date -
N/A
app pub date -
Jul 27, 2011
filing date -
Aug 10, 2010
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A projector includes a discharge lamp, a discharge lamp driver that supplies the discharge lamp with a current, and a controller that controls the discharge lamp driver. The controller controls the discharge lamp driver in such a way that the absolute magnitude of the current is relatively small in the first period and relatively large in the second period. In the second period, the controller carries out a second-period AC control process in which an AC current is supplied to the discharge lamp. In the first period, the controller carries out a first-period control process in which in a third period, the absolute magnitude of the current becomes a minimum in the first period and in a fourth period, the absolute magnitude of the current becomes an intermediate value between the minimum and a maximum absolute magnitude of the current in the second period.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
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