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- Sudden_Motion_Sensor abstract "The Sudden Motion Sensor (SMS) is Apple's patent-pending motion-based hardware and data-protection system used in their notebook computer systems. Apple introduced the system January 1, 2005 in its refreshed PowerBook line, and included it in the iBook line July 26, 2005. Since that time, Apple has included the system in all of their portable systems (since October 2006), now the MacBook Pro and MacBook Air.With a triaxial accelerometer, the system detects sudden acceleration, such as when the computer is dropped, and prepares the relatively fragile hard disk drive mechanism for impact. The system disengages the disk drive heads from the hard disk platters, preventing data loss and drive damage from a disk head crash. When the computer is stable, the drive operates normally again. A clicking noise can be heard when the sudden motion sensor activates. Broadly speaking, there have been two types of Sudden Motion Sensor. The sensor used in the G4-based laptops resolved shifts of 1/52 g (e.g. the dynamic range was close to 6-bit), while the sensor used in the current Intel-based laptops have an 8-bit resolution (250 scale divisions). In at least one model of Intel-based laptop, the MacBook Pro 15", Apple uses the Kionix KXM52-1050 three-axis accelerometer chip, with dynamic range of +/- 2g and bandwidth up to 1.5 kHz.The motion sensor can also be read by programs running on the Apple portables and a number of programs exist that use the motion sensor to make the computer tilt-aware [1]. This way, tilting can be used as a human interface device for instance for scrolling or for controlling games.".
- Sudden_Motion_Sensor wikiPageExternalLink sms.
- Sudden_Motion_Sensor wikiPageExternalLink amstracker.
- Sudden_Motion_Sensor wikiPageExternalLink HT1935.
- Sudden_Motion_Sensor wikiPageExternalLink seismac.html.
- Sudden_Motion_Sensor wikiPageID "1455792".
- Sudden_Motion_Sensor wikiPageRevisionID "569431861".
- Sudden_Motion_Sensor hasPhotoCollection Sudden_Motion_Sensor.
- Sudden_Motion_Sensor subject Category:Macintosh_computers.
- Sudden_Motion_Sensor type Artifact100021939.
- Sudden_Motion_Sensor type Computer103082979.
- Sudden_Motion_Sensor type Device103183080.
- Sudden_Motion_Sensor type Instrumentality103575240.
- Sudden_Motion_Sensor type Machine103699975.
- Sudden_Motion_Sensor type MacintoshComputers.
- Sudden_Motion_Sensor type Object100002684.
- Sudden_Motion_Sensor type PhysicalEntity100001930.
- Sudden_Motion_Sensor type Whole100003553.
- Sudden_Motion_Sensor comment "The Sudden Motion Sensor (SMS) is Apple's patent-pending motion-based hardware and data-protection system used in their notebook computer systems. Apple introduced the system January 1, 2005 in its refreshed PowerBook line, and included it in the iBook line July 26, 2005.".
- Sudden_Motion_Sensor label "Sudden Motion Sensor".
- Sudden_Motion_Sensor label "Sudden Motion Sensor".
- Sudden_Motion_Sensor label "Sudden Motion Sensor".
- Sudden_Motion_Sensor label "Sudden Motion Sensor".
- Sudden_Motion_Sensor label "Sudden Motion Sensor".
- Sudden_Motion_Sensor label "Sudden Motion Sensor".
- Sudden_Motion_Sensor label "Sudden Motion Sensor".
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- Sudden_Motion_Sensor wasDerivedFrom Sudden_Motion_Sensor?oldid=569431861.
- Sudden_Motion_Sensor isPrimaryTopicOf Sudden_Motion_Sensor.