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Class Information
Number: 315/307
Name: Electric lamp and discharge devices: systems > Current and/or voltage regulation > Automatic regulation
Description: Systems wherein the regulation of the current or potential supplied to the load device is automatically controlled in response to some condition.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7368880 |
Phase shift modulation-based control of amplitude of AC voltage output produced by double-ended DC-AC converter circuitry for powering high voltage load such as cold cathode fluorescent lamp |
May. 6, 2008 |
| 7365951 |
Discharge lamp lighting device, lighting system and method |
Apr. 29, 2008 |
| 7362058 |
Method and device for controlling the light intensity in a multi-lamp illumination device for a display panel |
Apr. 22, 2008 |
| 7358683 |
Automatic PWM controlled driver circuit and method |
Apr. 15, 2008 |
| 7358681 |
Switched constant current driving and control circuit |
Apr. 15, 2008 |
| 7358680 |
Bistate HID operation |
Apr. 15, 2008 |
| 7355356 |
Circuit arrangement and method for detecting a crest factor of a lamp current or a lamp operating voltage of an electric lamp |
Apr. 8, 2008 |
| 7355355 |
Discharge lamp lighting apparatus |
Apr. 8, 2008 |
| 7355354 |
Method for starting a discharge lamp using high energy initial pulse |
Apr. 8, 2008 |
| 7355352 |
Circuit and method for dynamic adjustment of operation conditions of a gas discharge lamp |
Apr. 8, 2008 |
| 7352137 |
Controlling color temperature of lighting fixture |
Apr. 1, 2008 |
| 7348960 |
Backlight device and method for controlling light source brightness thereof |
Mar. 25, 2008 |
| 7348737 |
Lighting circuit for high-pressure discharge lamp |
Mar. 25, 2008 |
| 7348733 |
Discharge lamp lighting circuit and method |
Mar. 25, 2008 |
| 7345434 |
Discharge lamp lighting apparatus and luminaire |
Mar. 18, 2008 |
| 7345432 |
Inverter circuit for lighting backlight of liquid crystal display and method for driving the same |
Mar. 18, 2008 |
| 7342362 |
Full-bridge soft switching inverter and driving method thereof |
Mar. 11, 2008 |
| 7339332 |
Chroma compensated backlit display |
Mar. 4, 2008 |
| 7339329 |
Dimmable ballast for an electrodeless discharge lamp |
Mar. 4, 2008 |
| 7336041 |
Automatic light dimmer for electronic and magnetic ballasts (fluorescent or HID) |
Feb. 26, 2008 |
| 7336037 |
Intelligent electrical switching device |
Feb. 26, 2008 |
| 7333313 |
Multiplexed temperature sensing circuit for HID lamp ballast |
Feb. 19, 2008 |
| 7332879 |
Control method and device for a power-converting module that drives a light-emitting component |
Feb. 19, 2008 |
| 7332876 |
Lighting apparatus for discharge lamp |
Feb. 19, 2008 |
| 7332870 |
Driving voltage controller for light-emitting source |
Feb. 19, 2008 |
| 7332869 |
Power supply apparatus, backlight assembly and liquid crystal display apparatus having the same |
Feb. 19, 2008 |
| 7332868 |
Discharge lamp lighting device |
Feb. 19, 2008 |
| 7332699 |
Feed-forward methods and apparatus for setting the light intensities of one or more LEDs |
Feb. 19, 2008 |
| 7330003 |
Backlight control circuit with two transistors |
Feb. 12, 2008 |
| 7330002 |
Circuit for controlling LED with temperature compensation |
Feb. 12, 2008 |
| 7330001 |
Ballast having a dimming device |
Feb. 12, 2008 |
| 7327101 |
Single point sensing for end of lamp life, anti-arcing, and no-load protection for electronic ballast |
Feb. 5, 2008 |
| 7327100 |
Discharge lamp lighting apparatus |
Feb. 5, 2008 |
| 7327099 |
Ballast having a dimming device |
Feb. 5, 2008 |
| 7327097 |
Light module with control of luminance and method for managing the luminance |
Feb. 5, 2008 |
| 7323827 |
Ripple reduction method for electronic ballasts |
Jan. 29, 2008 |
| 7323824 |
Methods and apparatus for operating very high pressure short arc discharge lamps |
Jan. 29, 2008 |
| 7323823 |
Fluorescent lamp assembly having multiple settings and method |
Jan. 29, 2008 |
| 7321205 |
Method and a controller to control power supply to a CCFL |
Jan. 22, 2008 |
| 7321202 |
System and method for reducing flicker of compact gas discharge lamps at low lamp light output level |
Jan. 22, 2008 |
| 7321200 |
Square wave drive system |
Jan. 22, 2008 |
| 7319298 |
Digitally controlled luminaire system |
Jan. 15, 2008 |
| 7319296 |
Device for driving lamps |
Jan. 15, 2008 |
| 7317288 |
Controlling method and system for LED-based backlighting source |
Jan. 8, 2008 |
| 7317286 |
Power supply apparatus for discharge lamp and control method for the same |
Jan. 8, 2008 |
| 7315464 |
Drive system and AC conversion device |
Jan. 1, 2008 |
| 7315138 |
Cold cathode fluorescent discharge lamp apparatus and operating method for same |
Jan. 1, 2008 |
| 7315137 |
Method and apparatus for a CCFL driving device |
Jan. 1, 2008 |
| 7315136 |
Protection apparatus and multi-lamp driving system using the same |
Jan. 1, 2008 |
| 7315134 |
Power supply for a high voltage device |
Jan. 1, 2008 |
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