新的LED照片閃光燈驅(qū)動(dòng)程序智能手機(jī)攝像頭提高圖像質(zhì)量

　　在智能手機(jī)和其他移動(dòng)設(shè)備的攝像頭的廣泛采用，加上高質(zhì)量的消費(fèi)預(yù)期，銳利的圖像是簡(jiǎn)單的設(shè)計(jì)，驅(qū)動(dòng)需要較小的尺寸，并降低元件數(shù)量，許多智能手機(jī)移動(dòng)整合前、后攝像頭特別。

　　手機(jī)攝像頭將增加約16億個(gè)單位在2011到22億多臺(tái)，2015，占全球移動(dòng)電話92%，根據(jù)Gartner公司的市場(chǎng)研究公司還發(fā)現(xiàn)，手機(jī)的一個(gè)額外的15%將有兩個(gè)相機(jī)拍人像照片或使視頻聊天。

　　LED驅(qū)動(dòng)廠商正在開(kāi)發(fā)新的設(shè)計(jì)，以滿足這些需求，隨著所有類(lèi)型的集成攝像機(jī)移動(dòng)設(shè)備的需求不斷攀升。一些供應(yīng)商甚至開(kāi)發(fā)創(chuàng)新的架構(gòu)以改善圖片質(zhì)量。

　　一個(gè)例子是AMS AG的as3630照片F(xiàn)lash驅(qū)動(dòng)程序（圖1），利用電力從超級(jí)電容器。這是說(shuō)生產(chǎn)4x明亮的閃光輸出相比，最閃光的系統(tǒng)在智能手機(jī)領(lǐng)域，從而轉(zhuǎn)化為清晰的圖像。

　　Figure 1： The ams AS3630 uses an I2C interface for current and timing adjustments to set the end of charge voltage and measure the Supercap and LED parameters through the internal ADC. A dedicated TXMASK/TORCH input can be used for a torch button or to reduce the battery current if a RF power amplifier （PA） is operated at the same time （TX Masking）， （Courtesy of ams）。

　　Here are the details. The AS3630 can drive up to 8 A current through the flash system， which means pin-sharp image taking and support for faster shutter speeds. Ams noted that photos of fast-moving objects in dark conditions， which previously would have had motion artifacts， might now be captured in detail. It also eliminates glare and discomfort because even short flash durations as low as 10 ms provide sufficient light， according to ams.