Gain-Adjusting Apparatus For Optical Image Stabilizer And Method Thereof
AssigneeAsia Optical Co., Inc.
InventorYi-Chang LIN
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Abstract
A gain-adjusting apparatus and method thereof are described. The gain-adjusting apparatus includes an integrator, a first register, a control unit, and a second register. The integrator integrates the gyro signal data to generate the integral data. The control unit is coupled to the first register and the second register, respectively. The control unit determines whether the gyro signal data is either greater than an upper gyro threshold or less than a lower gyro threshold to detect the gyro signal data and decrease the gain value stored in the second register.
Claims18
A gain-adjusting apparatus for an optical image stabilizer (OIS), the gain-adjusting apparatus comprising:
- an integrator, for receiving a gyro signal data and integrating the gyro signal data to generate an integral data;
- a first register coupled to the integrator, for storing the gyro signal data and the integral data;
- a second register coupled to the integrator, for storing a gain value;
- and
- a control unit coupled to the first register and the second register respectively, for detecting whether the gyro signal data is either greater than an upper gyro threshold or less than a lower gyro threshold and decreasing the gain value when the gyro signal data is either greater than an upper gyro threshold or less than a lower gyro threshold.
A method of adjusting gain value for an optical image stabilizer (OIS), the method comprising the steps of:
- (a) receiving gyro signal data;
- (b) integrating the gyro signal data to generate integral data;
- (c) storing the gyro signal data, the integral data and a gain value;
- and
- (d) detecting whether the gyro signal data is either greater than an upper gyro threshold or less than a lower gyro threshold and decreasing the gain value when the gyro signal data is either greater than an upper gyro threshold or less than a lower gyro threshold.
Dependencies are inferred from the claim text.