Gyro sensor and electronic apparatus
US-9222776-B2 · Dec 29, 2015 · US
Gyroscope shock and disturbance detection circuit
US9109894B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9109894-B2 |
| Application number | US-201313925741-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 24, 2013 |
| Priority date | Apr 26, 2013 |
| Publication date | Aug 18, 2015 |
| Grant date | Aug 18, 2015 |
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Abstract
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The invention relates to integrated circuits, and more particularly, to systems, devices and methods of integrating a gyro sensing circuit with a gyroscope to detect a shock or a disturbance, and accurately differentiate rotation-based sense signals from noises introduced by the shock or disturbance. The gyro sensing circuit may be implemented in a differential or non-differential demodulation scheme, and comprises at least one demodulation unit and a peak detector. The at least one demodulation unit demodulates a gyro output signal provided by the gyroscope with a reference signal. In a demodulated gyro output signal, a shock signal or a gyro disturbance signal is substantially isolated out from interested gyro sense signals that are used to sense a rate of rotation. A peak detector samples the modulated gyro output signal, determines whether the signal exceeds a threshold level V TH and outputs a shock flag indicating a corresponding determination result.
First claim
Opening claim text (preview).
We claim: 1. A gyro sensing circuit based on a differential demodulation scheme, comprising: a first demodulation unit, coupled to receive a gyro output signal from a gyroscope, the first demodulation unit demodulating the gyro output signal to a first demodulated gyro output using a first reference signal, the gyro output signal comprising a shock signal and a plurality of gyro sense signals that are related to an interested rate of rotation; a second demodulation unit, coupled…
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Physics · mapped topic
- G01C19/5719Primary
Physics · mapped topic
- G01C19/5726Primary
Physics · mapped topic
Physics · mapped topic
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- What does patent US9109894B2 cover?
- The invention relates to integrated circuits, and more particularly, to systems, devices and methods of integrating a gyro sensing circuit with a gyroscope to detect a shock or a disturbance, and accurately differentiate rotation-based sense signals from noises introduced by the shock or disturbance. The gyro sensing circuit may be implemented in a differential or non-differential demodulation …
- Who is the assignee on this patent?
- Maxim Integrated Products
- What technology area does this patent fall under?
- Primary CPC classification G01C19/5719. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Aug 18 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).