https://maemo.octonezd.me/api.php?action=feedcontributions&feedformat=atom&user=213.39.155.65Maemo Wiki Mirror - User contributions [en]2026-04-22T05:53:29ZUser contributionsMediaWiki 1.45.1https://maemo.octonezd.me/index.php?title=N900_VGA_camera&diff=28491N900 VGA camera2010-01-25T21:55:32Z<p>213.39.155.65: </p>
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<div>The front camera is a VGA camera from ST microelectronics.<br />
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The [http://www.alldatasheet.com/datasheet-pdf/pdf/206482/STMICROELECTRONICS/VS6555.html datasheet] lists the following specs.<br />
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* Size: 4.5*4.5*2.5mm<br />
* Resolution: 640*480<br />
* minimum illumination 7 lux.<br />
* SNR at 100 lux 34dB<br />
* Field of view: 66 degrees horizontal, 78 degrees diagonal.<br />
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The driver presents the camera as a video4linux device - /dev/video1.<br />
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This is connected via a multiplexor to the single camera bus on the CPU, along with the main camera. The two cannot be used at once.<br />
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This camera had severe performance problems under the original software release - under the one released in early January - in very good light, the picture is acceptable.<br />
In normal room light, the performance remains lower than would be hoped.<br />
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[[Category:n900]] [[Category:n900_Hardware]]</div>213.39.155.65