Symbian3/SDK/Source/GUID-0F784804-8452-4C92-ABB3-56B81BAED744.dita
author Graeme Price <GRAEME.PRICE@NOKIA.COM>
Fri, 15 Oct 2010 14:32:18 +0100
changeset 15 307f4279f433
parent 13 48780e181b38
permissions -rw-r--r--
Initial contribution of the Adaptation Documentation.
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<?xml version="1.0" encoding="utf-8"?>
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<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->
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<!-- This component and the accompanying materials are made available under the terms of the License 
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"Eclipse Public License v1.0" which accompanies this distribution, 
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and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". -->
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<!-- Initial Contributors:
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    Nokia Corporation - initial contribution.
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Contributors: 
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-->
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<!DOCTYPE concept
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  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
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<concept id="GUID-0F784804-8452-4C92-ABB3-56B81BAED744" xml:lang="en"><title>Sensor
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Services Overview</title><shortdesc>The Sensor Services collection is a group of components that provide
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APIs for extending sensors by means of plug-ins and providing channel-based
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communication with the sensor hardware.</shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>
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<section id="GUID-A6D94351-3A27-40CA-876A-B47B69AFD48C"><title>Key Concepts
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and Terms</title><dl>
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<dlentry>
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<dt>Sensor</dt>
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<dd><p>A sensor is a hardware measuring device connected to the Symbian
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device, which measures a physical quantity in its immediate vicinity and converts
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that quantity into small sets of numeric digital values.</p></dd>
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</dlentry>
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<dlentry>
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<dt>Sensor Subsystem (SSY)</dt>
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<dd><p>Sensor Subsystems are plug-ins that connect the sensor hardware with
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the sensor server.</p></dd>
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</dlentry>
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</dl>           </section>
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<section id="GUID-567734D1-EDE0-4799-8851-B798BB7ACF50"><title>Architecture</title> 
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     <fig id="GUID-BD0DC0F8-9DA8-40D2-ABE5-F6D7D36BB4B6">
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<title>Sensor Services Architecture</title>
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<image href="GUID-5B8FEDA0-624E-44D6-BF70-C5228234BD15_d0e131676_href.png" placement="inline"/>
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</fig><p>The Sensor Services collection consists of the following components:</p><ul>
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<li><p><b>Sensor Framework</b>, which provides sensor server and plug-in interfaces
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for adding any new sensor plug-in as required. The framework also provides
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sensor channel APIs for creating a medium (sensor channel) of exchange between
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the client applications and the sensor hardware. The sensor plug-ins retrieve
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data from sensor hardware (through sensor channels) and enable the client
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applications to use the data for specific requirements. </p></li>
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<li><p><b>Data Compensator</b>, which uses data provided by the sensor plug-ins
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to correct the sensor axis data based on the current orientation of the Symbian
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device. This data can be used by the client applications to display the pages
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in portrait or landscape views.</p></li>
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</ul>     </section>
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<section id="GUID-1ADD99BC-6ECF-464F-9E05-0BEA28F67A2B"><title>Typical Uses</title><ul>
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<li><p><xref href="GUID-4B709839-8EEF-4AD2-9868-9AF0176B1E5B.dita">Using Sensor
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Channel APIs</xref>.</p></li>
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<li><p><xref href="GUID-64AC6F53-A9A5-46FD-BCC6-4A9BD8D4DB5C.dita">Compensating
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Sensor Data for Display Orientation</xref></p></li>
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</ul></section>
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</conbody></concept>