Display and keypad backlight management for portable electronic devices

This invention is a portable electronic device ( 100 ) including a display ( 212 ), an input device ( 210 ), a lighting circuit ( 204 ), a light sensor ( 206 ) and a control circuit ( 208 ). The lighting circuit ( 204 ) includes a light source ( 214 ) to illuminate the display ( 212 ) and the input...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	ABBASI AAMIR A
Format:	Patent
Sprache:	eng
Schlagworte:	CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION ANDCOMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION ANDCOMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THIR OWNENERGY USE ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TELEPHONIC COMMUNICATION TRANSMISSION WIRELESS COMMUNICATIONS NETWORKS
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Beschreibung
Zusammenfassung:	This invention is a portable electronic device ( 100 ) including a display ( 212 ), an input device ( 210 ), a lighting circuit ( 204 ), a light sensor ( 206 ) and a control circuit ( 208 ). The lighting circuit ( 204 ) includes a light source ( 214 ) to illuminate the display ( 212 ) and the input device ( 210 ). The light sensor ( 206 ) determines the ambient lighting conditions about the display ( 212 ) and/or the input device ( 210 ) and generates an ambient lighting signal based on the ambient lighting conditions. The control circuit ( 208 ) is coupled to the lighting circuit ( 204 ) and the light sensor ( 206 ) and has a delayed operation mode in which a first activation of the input device ( 210 ) illuminates the display ( 212 ) without performing any other operation of the device ( 100 ) and a second activation of the input device performs an operation of the device other than illuminating the display. The control circuit ( 208 ) of the portable electronic device ( 100 ) may receive a reverse bias signal generated by the lighting circuit ( 204 ) when incident with ambient lighting about the user interface ( 202 ) to supplement or eliminate the light sensor ( 206 ).