Printed from http://www.electronista.com

iPhone 5s motion-sensing problems linked to new accelerometer

updated 03:36 pm EDT, Wed October 16, 2013

Supplier switch leaves phone with offset bias

The problems with motion sensing in the iPhone 5s are indeed connected to hardware, suggests RealityCap CEO Eagle Jones. Jones notes that whereas previous iPhones were based on STMicroelectronics accelerometers, the 5s uses a Bosch Sensortech part. Both sensors have similar variance, but the Bosch part has higher bias, noted to be consistent with the inaccuracies people are seeing in iPhone apps. Jones estimates an offset of +/-5 degrees, versus just +/-1 degree for the STM accelerometer.

He argues that Apple could have fixed the problem with factory calibration, but simply didn't, for whatever reason. As a stopgap solution, it's recommended that app developers include calibration procedures allowing users to set their own zero points.

RealityCap is working on code for developers meant to fix the problem without having to write unique solutions each time. That technology is still under development, though, and won't be formally revealed for several weeks. Apple itself could conceivably update iOS 7 to make software calibration universal.



By Electronista Staff
Post tools:

TAGS :

toggle

Comments

Login Here

Not a member of the MacNN forums? Register now for free.

toggle

Network Headlines

toggle

Most Popular

Advertisement

Recent Reviews

Seagate Wireless

It seems like no matter how much internal storage is included today's mobile devices, we, as users, will always find a way to fill the ...

Lenovo Yoga Tablet 2 (Android, 10.1-inch)

Lenovo is building a bigger name for itself year after year, including its devices expanding beyond desktop computers. The company's l ...

Brother HL-L8250CDN Color Laser Printer

When it comes to selecting a printer, the process is not exactly something most people put a lot of thought into. Printers are often t ...

Advertisement

toggle

Most Commented

 
toggle

Popular News