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Class Information
Number: 315/291
Name: Electric lamp and discharge devices: systems > Current and/or voltage regulation
Description: Systems which include means to regulate the current and/or voltage supplied to the load device.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7586272 |
Cold cathode fluorescent lamp, cold cathode fluorescent lamp driving apparatus, cold cathode fluorescent lamp apparatus, liquid crystal display apparatus, control method for cold cathode fluor |
Sep. 8, 2009 |
| 7586271 |
Efficient lighting |
Sep. 8, 2009 |
| 7586270 |
Circuit and method for the operation of miniature high pressure short-arc lamps using alternating current |
Sep. 8, 2009 |
| 7586269 |
Device for driving light source module |
Sep. 8, 2009 |
| 7586266 |
Driver circuit for an HID lamp and method for operating an HID lamp |
Sep. 8, 2009 |
| 7586265 |
Illumination device |
Sep. 8, 2009 |
| 7586261 |
Rare gas fluorescent lamp |
Sep. 8, 2009 |
| 7583035 |
System and method for driving LED |
Sep. 1, 2009 |
| 7583034 |
LED controller and method therefor |
Sep. 1, 2009 |
| 7579788 |
Power supply system of a light source and a light source actuating method |
Aug. 25, 2009 |
| 7579787 |
Methods and protection schemes for driving discharge lamps in large panel applications |
Aug. 25, 2009 |
| 7579786 |
Method, apparatus, and system for driving LED's |
Aug. 25, 2009 |
| 7579782 |
Circuitry for portable lighting devices and portable rechargeable electronic devices |
Aug. 25, 2009 |
| 7579781 |
Organic electro-luminescent display device and method for driving the same |
Aug. 25, 2009 |
| 7576498 |
Organic EL drive circuit and organic EL display device using the same |
Aug. 18, 2009 |
| 7576497 |
Synchronous light emitting diode lamp string |
Aug. 18, 2009 |
| 7573729 |
Resonant power LED control circuit with brightness and color control |
Aug. 11, 2009 |
| 7573211 |
Backlight control circuit |
Aug. 11, 2009 |
| 7573210 |
Method and system for feedback and control of a luminaire |
Aug. 11, 2009 |
| 7573209 |
Method and system for feedback and control of a luminaire |
Aug. 11, 2009 |
| 7573207 |
Driver system and method with multi-function protection for cold-cathode fluorescent lamp and external-electrode fluorescent lamp |
Aug. 11, 2009 |
| 7573206 |
Perceptible flickering reduction |
Aug. 11, 2009 |
| 7573205 |
Lamp-lighting apparatus |
Aug. 11, 2009 |
| 7570235 |
Communication diode driver circuit |
Aug. 4, 2009 |
| 7569998 |
Striking and open lamp regulation for CCFL controller |
Aug. 4, 2009 |
| 7569997 |
Self-calibrated integration method of light intensity control in LED backlighting |
Aug. 4, 2009 |
| 7569996 |
Omni voltage direct current power supply |
Aug. 4, 2009 |
| 7569807 |
Light source with photosensor light guide |
Aug. 4, 2009 |
| 7567067 |
Power supply, display device, and light source driving apparatus |
Jul. 28, 2009 |
| 7567041 |
Discharge lamp lighting apparatus and projector |
Jul. 28, 2009 |
| 7567040 |
High efficiency driver for color light emitting diodes (LED) |
Jul. 28, 2009 |
| 7564452 |
Organic electroluminescent display |
Jul. 21, 2009 |
| 7564200 |
Discharge lamp lighting circuit with frequency control in accordance with phase difference |
Jul. 21, 2009 |
| 7564199 |
Discharge lamp lighting circuit |
Jul. 21, 2009 |
| 7564197 |
Discharge tube operation device |
Jul. 21, 2009 |
| 7564196 |
Power supply device, and LED device and electronic device using same |
Jul. 21, 2009 |
| 7564195 |
Circuit of the electronic ballast with the capability of automatic restart |
Jul. 21, 2009 |
| 7564194 |
Method for detecting lamp current and lamp driving circuit using the method for detecting the lamp current |
Jul. 21, 2009 |
| RE40843 |
Electronic dimmable ballast for high intensity discharge lamp |
Jul. 14, 2009 |
| 7560878 |
Circuit arrangement and method for operating high-pressure discharge lamps |
Jul. 14, 2009 |
| 7560877 |
Operation circuit for a discharge lamp and device for operation of a discharge lamp and a light source device |
Jul. 14, 2009 |
| 7560876 |
Light device and control method thereof |
Jul. 14, 2009 |
| 7560873 |
Method for detection of non-zero-voltage switching operation of a ballast of fluorescent lamps, and ballast |
Jul. 14, 2009 |
| 7560872 |
DC-AC converter having phase-modulated, double-ended, half-bridge topology for powering high voltage load such as cold cathode fluorescent lamp |
Jul. 14, 2009 |
| 7560867 |
Starter for a gas discharge light source |
Jul. 14, 2009 |
| 7559674 |
Mounting arrangement for LED lamps |
Jul. 14, 2009 |
| 7558081 |
Basic halogen convertor IC |
Jul. 7, 2009 |
| 7557524 |
Lighting device |
Jul. 7, 2009 |
| 7557523 |
Discharge lamp lighting device, and lighting equipment and lighting system using the device |
Jul. 7, 2009 |
| 7557522 |
Preheat control device for modulating voltage of gas-discharge lamp |
Jul. 7, 2009 |
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