Patent · US Active

Color management system

US7938557B2 · kind B2 · utility

0Cited by

3References

9Claims

0Family size

Assignee

Avago Technologies ECBU IP (Singapore) Pte. Ltd. · SG

Inventors

Sundar Natarajan Yoganandan · Johor Bahru, MY
Thye Linn Mok · Bukit Mertajam, MY
Kian Shin Lee · Bukit Mertajam, MY
Norfidathul Aizar Abdul Karim · Simpang Ampat, MY
Su Lin Oon · Bukit Mertajam, MY
Siew It Pang · Bayan Lepas, MY
Kheng Leng Tan · Air Itam, MY
Fakhrul Arifin Mohd Afif · Shah Alam, MY
Wen Ou · Bukit Mertajam, MY
Yew Cheong Kuan · Bukit Mertajam, MY

Key dates

Filing date	Dec 23, 2004
Grant date	May 10, 2011
Priority date	—
Expiry date	Oct 15, 2027

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S362/80
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A light source and a method for operating the same are disclosed. The light source includes a light emitter and a controller. The light emitter generates light in response to a control signal coupled thereto. The light emitter is characterized by an age related to the amount of light that has been cumulatively generated by the light emitter, the generated light for a given control signal changing with the age. The controller measures the age of the light emitter and generates the control signal based on the desired light intensity and the measured age of the light emitter. In one embodiment, the controller stores an age value for the light emitter, and the controller determines the control signal in response to an input signal specifying a desired light intensity from the light emitter, the controller updating the age value each time the control signal is determined.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.