CN103188426A - Offset error compensation device - Google Patents

Abstract

The present invention relates to a compensation device for offset error of a camera device, comprising a platform, an offset sensor, a calculation component and an actuation component. The platform has X-axis and Y-axis coordinates, and a solid-state camera device is arranged on the platform. The offset sensor is arranged adjacent to the solid-state camera device and detects the offset of the solid-state camera device. The calculation component calculates the offset error value based on the offset. The actuation component is arranged on the platform and reversely drives the solid-state camera device according to the offset error value for compensation, wherein the offset sensor is between the solid-state camera device and the actuation component.

Description

Compensation device for offset error

technical field

The present invention relates to a compensating device for an offset error of an imaging device, and in particular to a compensating device for compensating an offset error of a solid-state imaging device in an imaging device.

Background technique

When using the camera device, the user's hand shake will cause difficulty in image capture. Especially for thin and light digital cameras, due to the lack of stability of the general user holding the digital camera, it is often caused by the shaking of the user's hands or the uneven force of pressing the shutter at the moment of pressing the shutter. camera shake, resulting in blurred images.

With the technical development of the camera device, various offset sensors are usually installed in the existing camera device, such as: angular velocity sensor or position sensor, etc., so as to detect the angle change data of the movement and the position change data and generate corresponding sensing signals. However, such an approach requires at least two sensors, and the sensed offset is not the same as the actual offset of the solid-state imaging device. When there is a difference between the sensed offset and the actual value, of course the calculated compensation value will also be different. In this case, the compensation effect will not increase but decrease.

Therefore, it is necessary to propose a compensation device that can reduce the gap between the offset value sensed by the current sensor and the actual offset value, so as to solve the image smear problem caused by vibration when the camera is used by the hand shaker.

Contents of the invention

The technical problem to be solved by the present invention is to provide a compensation device for offset errors to provide a compensation device that is closer to actual needs in view of the defect that there is a gap between the offset value sensed by the compensation device in the prior art and the actual offset value. compensation effect.

The technical solution adopted by the present invention to solve the technical problem is to provide an offset error compensating device for a camera device, including a platform, an offset sensor, a computing component and an actuating component. The platform has X-axis and Y-axis coordinates, and a solid-state imaging device is arranged on it. The offset sensor is disposed adjacent to the solid-state imaging device, and detects the offset of the solid-state imaging device. The calculation component calculates an offset error value based on the offset. The actuating component is arranged on the platform, and drives the solid-state imaging device backward according to the offset error value as compensation, wherein the offset sensor is interposed between the solid-state imaging device and the actuating component.

According to an embodiment of the present invention, the solid-state imaging device is a charge-coupled device. The offset sensor can be a magnetic sensor component, such as a Hall component. The actuation assembly may be an induction coil.

According to another embodiment of the present invention, the offset sensor further includes X and Y axis offset sensing elements, and the offset further includes X and Y axis offset. When the platform is twisted, the X and Y axis offset sensors The component is used to detect the X and Y axis offsets of the solid-state imaging device. If only one of the X and Y axis offset sensing elements is included, the offset error value is the distance error value. If the X-axis and Y-axis offset sensing elements are included at the same time, the offset error value is an angle error value, which is calculated from the X-axis offset and the Y-axis offset.

Therefore, using the offset error compensation device of the present invention, when the platform torsion phenomenon occurs, the gap between the offset error value sensed by the offset sensor and the actual offset error value can be reduced, thereby providing a more realistic compensation effect.

Description of drawings

In order to make the above and other objects, features, advantages and embodiments of the present invention more comprehensible, the accompanying drawings are described as follows:

FIG. 1 is a schematic structural diagram of an offset error compensation device according to an embodiment of the present invention. .

FIG. 2 is a schematic diagram of the offset of the solid-state imaging device and the offset sensing component when the platform torsion phenomenon occurs.

Detailed ways

Please refer to FIG. 1 , which shows a schematic structural diagram of an offset error compensation device 100 according to an embodiment of the present invention. The offset error compensation device 100 includes a platform 140 , an offset sensor 120 and an actuating component 130 . The platform 140 has X-axis and Y-axis coordinates, and the solid-state imaging device 110 is disposed thereon, and at least one axis hole group 150 is disposed around the solid-state imaging device 110 . The offset sensor 120 is disposed adjacent to one side of the solid-state imaging device 110 , and detects the offset of the solid-state imaging device 110 by ignoring the gap error of the shaft hole set 150 when the platform 140 is twisted. That is to say, when the platform 140 is twisted, for the actuating assembly 130 , the offsets of the offset sensor 120 and the solid-state imaging device 110 on the same side are in phase and similar. In this way, the offset sensor 120 can avoid the error caused by the gap (between the shaft and the hole) of the shaft hole set 150 . The calculating component (not shown) calculates the offset error value based on the offset, and sends it back to the actuating component 130 . The actuator component 130 is also disposed on the platform 140 , but is farther away from the solid-state imaging device 110 than the offset sensor 120 , and reversely drives the solid-state imaging device 110 according to the offset error value to achieve offset error compensation.

Please refer to FIG. 2 again, which shows a schematic diagram of the offset of the solid-state imaging device 110 and the offset sensor 120 when the platform 140 is twisted. It can be seen from FIG. 2 that when the platform 140 is twisted, there will be a gap between the shaft and the hole of the shaft hole group 150 around the solid-state imaging device 110, resulting in a situation where the offset is not synchronized, that is, a gap error occurs. . However, since the offset sensor 120 is adjacently arranged on one side of the solid-state imaging device 110, when the platform is twisted by an angle θ, it is known from the concept of trigonometric functions that at the same angle, the closer the distance is, the more accurate the offset is, so the solid-state imaging device 110 The offset d1 of the offset sensor 120 will be smaller than the offset d2 of the offset sensor 120 . And when the offset sensor 120 is placed adjacent to the periphery of the solid-state imaging device 110, the offset sensor 120 can detect the offset of the solid-state imaging device 110 by ignoring the gap error of the shaft hole group 150, in other words, the solid-state imaging The offset d1 of the device 110 is very close to the offset d2 of the offset sensor 120 to achieve more accurate sensing performance. That is to say, the actual offset of the offset sensor 120 is quite close to the actual offset of the solid-state imaging device 110 by the way that the offset sensor 120 is interposed between the solid-state imaging device 110 and the actuating component 130, so The configuration method achieves more accurate sensing performance.

In actual production, the aforementioned solid-state imaging device 110 may be implemented using a charge-coupled device. The offset sensor 120 can be a magnetic sensor component, such as a Hall component or the like. The actuation component 130 can be an induction coil.

According to another embodiment of the present invention, the offset sensor 120 further includes X, Y axis offset sensing elements, and the offset further includes the X, Y axis offset. When the platform 140 is twisted, the X, Y axis offset The motion sensing element is used to detect the X-axis and Y-axis offset of the solid-state imaging device. If only one of the X and Y axis offset sensing elements is included, the offset error value is the distance error value. If the X-axis and Y-axis offset sensing elements are included at the same time, the offset error value is an angle error value, which is calculated from the X-axis offset and the Y-axis offset.

From the above-mentioned embodiments of the present invention, it can be known that the application of the present invention can reduce the difference between the offset error value sensed by the sensor and the actual offset error value when the platform torsion phenomenon occurs, that is, the current offset sensed by the sensor can be reduced. The gap between the value and the actual offset value, thereby providing a more realistic compensation effect.

Although the present invention has been disclosed above in terms of implementation, it is not intended to limit the present invention. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the present invention The scope of protection shall prevail as defined by the claims.

Claims (9)

1. A compensating device for an offset error, used for an imaging device, characterized in that it comprises: The platform has an X-axis and a Y-axis, and a solid-state imaging device is arranged on it; An offset sensor is adjacent to the solid-state imaging device and detects the offset of the solid-state imaging device; a calculation component that calculates an offset error value based on the offset; and an actuating component, which is configured on the platform, and drives the solid-state imaging device in reverse according to the offset error value as compensation; Wherein, the offset sensor is interposed between the solid-state imaging device and the actuating component. 2. The offset error compensation device according to claim 1, wherein the solid-state imaging device is a charge-coupled device. 3. The offset error compensation device according to claim 1, wherein the offset sensor further includes an X-axis offset sensing element, and the offset further includes an X-axis offset, when the platform occurs When twisted, the X-axis offset sensing element is used to detect the X-axis offset of the solid-state imaging device. 4. The offset error compensation device according to claim 1, wherein the offset sensor further includes a Y-axis offset sensor, and the offset further includes a Y-axis offset, when the platform occurs When twisted, the Y-axis offset sensing element is used to detect the Y-axis offset of the solid-state imaging device. 5. The offset error compensation device according to claim 3 or 4, wherein the offset error value is a distance error value. 6. The offset error compensation device according to claim 1, wherein the offset sensor further includes an X-axis offset sensing element and a Y-axis offset sensing element, and the offset further includes an X-axis offset sensor. offset and Y-axis offset, when the platform is twisted, the X-axis offset sensor is used to detect the X-axis offset of the solid-state imaging device, and the Y-axis offset sensor It is used to detect the Y-axis offset of the solid-state imaging device. 7 . The offset error compensation device according to claim 6 , wherein the offset error value includes an angle error value, which is calculated from the X-axis offset and the Y-axis offset. 8. The offset error compensation device according to claim 1, wherein the sensor is a Hall element. 9. The offset error compensation device according to claim 1, wherein the actuating component is an induction coil.

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