Automatic brightness control of the handheld device display with low illumination

Ma, Tien-Yan; Lin, Chih‐Yung; Hsu, Shu-Wei; Hu, Che-Wei; Hou, Ting‐Wei

doi:10.1109/csae.2012.6272797

Cited by 12 publications

(6 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The aforementioned two advantages are the benefits of brightness control discovered from an earlier study. 32 This study provides some opportunities for further research. Above all, supplementary research should be conducted to examine the effect of display backlight and ambient illuminance on the adaptive luminance contrast, because visual performance depends on both contrast and luminance.…”

Section: Discussionmentioning

confidence: 99%

Adaptive luminance contrast for enhancing reading performance and visual comfort on smartphone displays

Suk

2014

Opt. Eng

View full text Add to dashboard Cite

Abstract. This study developed a model for setting the adaptive luminance contrast between text and background for enhancing reading performance and visual comfort on smartphone displays. The study was carried out in two experiments. In Experiment I, a user test was conducted to identify the optimal luminance contrast with regard to subjects' reading performance, measured by lines of text reading and visual comfort, assessed by selfreport after the reading. Based on the empirical results of the test, an ideal adaptive model which decreases the luminance contrast gradually with passage of time was developed. In Experiment II, a validation test involving reading performance, visual comfort, and physiological stress measured by a brainwave analysis using an electroencephalogram confirmed that the proposed adaptive luminance contrast is adequate for prolonged text reading on smartphone displays. The developed model enhances both reading performance and visual comfort as well as reduces the energy consumption of a smartphone; hence, it is expected that this study will be applied to diverse kinds of visual display terminals.

show abstract

Section: Discussionmentioning

confidence: 99%

Adaptive luminance contrast for enhancing reading performance and visual comfort on smartphone displays

Suk

2014

Opt. Eng

View full text Add to dashboard Cite

show abstract

“…Previous studies have revealed that the current backlight luminance and the auto brightness function are not necessarily the best solutions for smartphones 1,4 . This study aimed to develop a dynamic display of backlight luminance for comfortable smartphone use in a dark environment and to verify the effectiveness of the dynamic backlighting by a validation test.…”

Section: Objectivementioning

confidence: 99%

“…However, this function is primarily designed for operation in the daily environment, not in a night environment, and besides, the display luminance is always too dark with high ambient lighting and too bright in a dark place 4 . That is, its features are inappropriate for pitch dark conditions, such as when the user is lying in bed at night, despite the frequent use of smartphones prior to sleeping; 95% of people use their smartphones in the hour before bed 2 .…”

Section: Introductionmentioning

confidence: 99%

Dynamics of backlight luminance for using smartphone in dark environment

Jang

Suk

2014

SPIE Proceedings

View full text Add to dashboard Cite

This study developed dynamic backlight luminance, which gradually changes as time passes for comfortable use of a smartphone display in a dark environment. The study was carried out in two stages. In the first stage, a user test was conducted to identify the optimal luminance by assessing the facial squint level, subjective glare evaluation, eye blink frequency and users' subjective preferences. Based on the results of the user test, the dynamics of backlight luminance was designed. It has two levels of luminance: the optimal level for initial viewing to avoid sudden glare or fatigue to users' eyes, and the optimal level for constant viewing, which is comfortable, but also bright enough for constant reading of the displayed material. The luminance for initial viewing starts from 10 cd/m 2 , and it gradually increases to 40 cd/m 2 for users' visual comfort at constant viewing for 20 seconds; In the second stage, a validation test on dynamics of backlight luminance was conducted to verify the effectiveness of the developed dynamics. It involving users' subjective preferences, eye blink frequency, and brainwave analysis using the electroencephalogram (EEG) to confirm that the proposed dynamic backlighting enhances users' visual comfort and visual cognition, particularly for using smartphones in a dark environment.

show abstract

“…Auto-brightness could be slow to adjust the screen brightness, or it would settle on a brightness level that was not satisfactory. Previous work has identified issues with the accuracy of adaptive brightness models and has developed new approaches to calculating the appropriate brightness level [32,46]. Sometimes auto-brightness is turned off and the user is forced to attempt to increase the screen brightness manually.…”

Section: Implications For Designmentioning

confidence: 99%

It's not just the light

Tigwell

Flatla

Menzies

2018

Proceedings of the 10th Nordic Conference on Human-Computer Interaction

View full text Add to dashboard Cite

Mobile technologies are used in increasingly diverse and challenging environments. With the predominantly visual nature of mobile devices, Situational Visual Impairments (SVIs) are a growing concern. However, fundamental knowledge is lacking about the causes of SVIs, how people deal with SVIs, and whether their solutions are effective. To address this, we first conducted a convenience-sampled online questionnaire with 174 participants, and identified many causes and (ineffective) solutions. To firmly ground our initial results, we then conducted a two-week ecological momentary assessment with 24 participants, balanced by age and gender across Australia and Scotland. We confirmed that SVIs are experienced often and during typical mobile tasks, and can be very frustrating. We identify a range of factors causing SVIs, discuss mobile design implications, and introduce an SVI Context Model rooted in empirical evidence. The contributions in this paper will support the development of new effective SVI solutions.

show abstract

Automatic brightness control of the handheld device display with low illumination

Cited by 12 publications

References 1 publication

Adaptive luminance contrast for enhancing reading performance and visual comfort on smartphone displays

Adaptive luminance contrast for enhancing reading performance and visual comfort on smartphone displays

Dynamics of backlight luminance for using smartphone in dark environment

It's not just the light

Contact Info

Product

Resources

About