TWI468836B - Method and system for starting a focusing function - Google Patents

Description

Focus function starting system and method

The invention relates to a focusing function starting system and method for an electronic device.

Most of the electronic devices currently on the market have camera functions, such as mobile phones. It not only enriches the functions of electronic devices, but also facilitates users. Many electronic device camera devices have a focusing function. When the electronic device is moving, the user usually needs to manually adjust the focal length to perform refocusing, which is a waste of time and is not convenient for the user to use the electronic device to shoot images.

In view of the above, it is necessary to provide a focusing function starting system and method for monitoring the movement of an electronic device by using an electronic compass and an acceleration sensor, and automatically focusing the focusing device in the electronic device according to the monitored movement.

A focus function activation system running in a camera device of an electronic device, the camera device comprising a focusing device, the electronic device further comprising an electronic compass and an acceleration sensor, the system comprising: a recording module for recording at regular intervals The electronic compass measures the angle of the electronic device in the three-dimensional space; the determining module is configured to determine whether the difference between the current angle of the electronic device in the three-dimensional space and the last recorded angle is within an allowable error range, if If the difference is within the allowable error range, it is determined that the electronic device does not rotate in the three-dimensional space, and if the difference is not within the allowable error range, determining that the electronic device has a rotation in a three-dimensional space; the control module, The acceleration sensor is configured to measure the acceleration of the electronic device; the determining module is further configured to determine whether the acceleration of the electronic device measured by the acceleration sensor exceeds a preset range, if the acceleration exceeds the preset range Determining that the electronic device is performing a translational motion, and if the acceleration does not exceed the preset range, determining the No sub-devices translational motion; and start module further configured to, when the determination result is that the electronic device rotates within the three-dimensional space, or when doing a translational motion, started to refocus focusing device.

A focusing function starting method is applied to an electronic device, the electronic device comprising a camera device, an electronic compass and an acceleration sensor, the method comprising: recording the angle of the electronic compass in the three-dimensional space at regular intervals; if the electronic If the difference between the current angle of the device and the last recorded angle is within an allowable error range, it is determined that the electronic device does not rotate in the three-dimensional space; if the difference between the current angle of the electronic device and the last recorded angle is not the Within the allowable error range, determining that the electronic device has a rotation in a three-dimensional space; controlling the acceleration sensor to measure an acceleration of the electronic device; if the acceleration exceeds a predetermined range, determining that the electronic device is performing a translational motion; If the acceleration does not exceed the preset range, it is determined that the electronic device does not perform a translational motion; and when the determination result is that the electronic device rotates in a three-dimensional space or performs a translational motion, the focusing device of the electronic device camera device is activated to re-adjust focal.

Compared with the prior art, the electronic compass is used to measure the angle of the electronic device in the three-dimensional space, and the acceleration sensor is used to measure the acceleration of the translation of the electronic device to determine whether the electronic device moves, thereby starting the focusing device to automatically adjust the focus.

FIG. 1 is a hardware structural diagram of a preferred embodiment of the focus function starting system of the present invention. The focus function activation system 100 operates in the camera device 10 of the electronic device 1. In the preferred embodiment, the electronic device 1 can be a mobile phone or a device having a camera focusing function such as a personal digital assistant (PDA). The camera device 10 includes a focusing device 102 for adjusting the focal length of the camera device 10. In the preferred embodiment, the focusing device 102 is an autofocus device.

The electronic device 1 further includes an electronic compass (E-Compass) 11 and an acceleration sensor 12. Whether the electronic device 1 is moved can be monitored by the electronic compass 11 and the acceleration sensor 12. Movement in this embodiment includes translation and rotation. Specifically, the angle change of the electronic device 1 in the three-dimensional space can be measured by using the electronic compass 11 , and the size of the angle change can be used to determine whether the electronic device 1 rotates in a three-dimensional space, and the electronic device 1 can be measured by using the acceleration sensor 12 . The acceleration according to the acceleration can determine whether the electronic device 1 performs a translational motion. The translational motion in this embodiment refers to the horizontal movement and the vertical movement of the electronic device 1 in the space.

As shown in FIG. 2, it is a functional module diagram of the focus function starting system 100 in FIG. The focus function activation system 100 includes a startup module 20, a recording module 21, a determination module 22, and a control module 23. Through the plurality of function modules, the focus function activation system 100 can activate the focusing device 102 of the camera device 10 to treat Shoot the subject and focus again. The module is a software program segment having a specific function, which is stored in a computer readable storage medium or other storage device and can be executed by a computer or other computing device including a processor.

When the camera device 10 of the electronic device 1 is activated, the activation module 20 is used to activate the electronic compass 11 and the acceleration sensor 12 to monitor the electronic device 1.

The recording module 21 is configured to record the electronic compass 11 at regular intervals to measure the angle of the electronic device 1 in three-dimensional space. In the preferred embodiment, the electronic compass 11 records the angle of the electronic device 1 in three dimensions every 100 to 500 ms.

The determining module 22 is configured to determine whether the difference between the current angle of the electronic device 1 and the angle of the last recording (hereinafter simply referred to as “difference value”) is within an allowable error range. If the difference is within the allowable error range, it is determined that the electronic device 1 does not rotate in the three-dimensional space. If the difference is not within the allowable error range, it is determined that the electronic device 1 has a rotation in a three-dimensional space. In the preferred embodiment, the allowable error range is less than or equal to 10 degrees, that is, when the difference is less than or equal to 10 degrees, the judgment result of the determining module 22 is that the electronic device 1 does not rotate in the three-dimensional space. . When the difference is greater than 10 degrees, the determination result of the determining module 22 is that the electronic device 1 has a rotation in a three-dimensional space.

The control module 23 is configured to control the acceleration sensor 12 to measure the acceleration of the electronic device 1.

The determining module 22 is further configured to determine whether the acceleration of the electronic device 1 measured by the acceleration sensor 12 exceeds a preset range. If the acceleration exceeds the preset range, it is determined that the electronic device 1 is performing a translational motion. If the acceleration does not exceed the preset range, it is determined that the electronic device 1 does not perform a translational motion. In the preferred embodiment, the setting range of the acceleration is 0.3 N/kg or less. That is, when the acceleration sensor 12 measures the acceleration of the electronic device 1 to be greater than 0.3 N/kg, the determination result of the determination module 22 is that the electronic device 1 is performing a translational motion. When the acceleration sensor 12 measures that the acceleration of the electronic device 1 is less than or equal to 0.3 N/kg, the judgment result of the determination module 22 is that the electronic device 1 does not perform a translational motion.

The activation module 20 is further configured to activate the focusing device 102 to automatically focus the camera device 10 when the determination result of the determining module 22 is that the electronic device 1 rotates in a three-dimensional space or performs a translational motion. Specifically, once the electronic compass 11 or the acceleration sensor 12 detects that the electronic device 1 is moving, the activation module 20 immediately activates the focusing device 102 to perform focus adjustment.

As shown in FIG. 3, it is a flowchart of a method for a preferred embodiment of the focusing function starting method of the present invention.

In step S30, when the camera device 10 of the electronic device 1 is activated, the startup module 20 activates the electronic compass 11 and the acceleration sensor 12.

In step S31, the electronic compass 11 and the acceleration sensor 12 are used to monitor whether the electronic device 1 is moving. In the preferred embodiment, the movement of the electronic device 1 includes rotation and translation of the electronic device 1 in a three-dimensional space. If the result of the determination is that the electronic device 1 is moving, the process proceeds to step S32. If the result of the determination is that the electronic device 1 has not moved, the step S31 is repeated.

In step S32, the startup module 20 activates the focusing device 102 to refocus.

As shown in FIG. 4, a refinement flowchart for monitoring whether the electronic device 1 is rotated by the electronic compass 11 in step S31 of FIG. 3 is shown.

In step S40, the recording module 21 records the electronic compass 11 at regular intervals to measure the angle of the electronic device 1 in the three-dimensional space. In the preferred embodiment, the electronic compass 11 records the angle of the electronic device 1 in three dimensions every 100 to 500 ms.

In step S41, the determining module 22 determines whether the difference between the current angle of the electronic device 1 and the last recorded angle is within the allowable error range. If the difference is within the allowable error range, the process proceeds to step S42. If the difference is not within the allowable error range, then step S43 is reached. In the preferred embodiment, the allowable error range is less than or equal to 10 degrees.

In step S42, the determination module 22 determines that the electronic device 1 has not rotated in the three-dimensional space, and returns to step S40.

In step S43, the determination module 22 determines that the electronic device 1 has rotated in the three-dimensional space.

As shown in FIG. 5, a refinement flowchart for monitoring whether the electronic device 1 is translated by the acceleration sensor 12 in step S31 of FIG. 3 is shown.

In step S50, the control module 23 controls the acceleration sensor 12 to measure the acceleration of the electronic device 1.

In step S51, the determining module 22 determines whether the acceleration of the electronic device 1 measured by the acceleration sensor 12 exceeds a preset range. In the preferred embodiment, the preset range of the acceleration is 0.3 N/kg or less. If the acceleration exceeds the preset range, the process proceeds to step S52. If the acceleration does not exceed the preset range, the process proceeds to step S53.

In step S52, the determining module 22 determines that the electronic device 1 is performing a translational motion, and ends the process.

In step S53, the determining module 22 determines that the electronic device 1 has not performed the translational motion, and returns to step S50.

The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to be limiting, and the present invention will be described in detail with reference to the preferred embodiments thereof, and those skilled in the art should understand that the technical solutions of the present invention may be modified or substituted. Neither should the spirit and scope of the technical solutions of the present invention be deviated.

1‧‧‧Electronic equipment

10‧‧‧ camera unit

100‧‧‧Focus function start system

102‧‧‧Focus device

11‧‧‧Electronic compass

12‧‧‧Acceleration sensor

20‧‧‧Starting module

21‧‧‧recording module

22‧‧‧Judgement module

23‧‧‧Control Module

When the camera device of the electronic device is activated, start the electronic compass and accelerate

S30‧‧‧ degree sensor

S31‧‧‧Is the electronic compass and acceleration sensor used to monitor whether the electronic device is moving?

S32‧‧‧Start focus device to refocus

1 is a hardware architecture diagram of a preferred embodiment of a focus function activation system of the present invention.

2 is a functional block diagram of the focus function activation system 100 of FIG.

3 is a flow chart of a method for a preferred embodiment of the focus function activation method of the present invention.

FIG. 4 is a detailed flowchart of monitoring whether the electronic device is rotated by using an electronic compass in step S31 of FIG. 3.

FIG. 5 is a detailed flowchart of monitoring whether the electronic device is translated by the acceleration sensor in step S31 of FIG. 3.

S30‧‧‧ When the camera unit of the electronic device is activated, the electronic compass and the acceleration sensor are activated.

S31‧‧‧Is the electronic compass and acceleration sensor used to monitor whether the electronic device is moving?

S32‧‧‧Start focus device to refocus

Claims (10)

A focus function activation system running in a camera device of an electronic device, the camera device comprising a focusing device, the electronic device further comprising an electronic compass and an acceleration sensor, the system comprising:
a recording module, configured to record an electronic compass at a certain time to measure an angle of the electronic device in a three-dimensional space;
a determining module, configured to determine whether a difference between a current angle of the electronic device in the three-dimensional space and an angle of the last recording is within an allowable error range, and if the difference is within an allowable error range, determining the electronic The device does not rotate in the three-dimensional space, and if the difference is not within the allowable error range, determining that the electronic device has a rotation in a three-dimensional space;
a control module for controlling acceleration of the acceleration sensor to measure the electronic device;
The determining module is further configured to determine whether the acceleration of the electronic device measured by the acceleration sensor exceeds a preset range, and if the acceleration exceeds the preset range, determining that the electronic device is performing a translational motion, if If the acceleration does not exceed the preset range, it is determined that the electronic device does not perform a translational motion; and the activation module is further configured to start the focusing device when the determination result is that the electronic device rotates in a three-dimensional space or performs a translational motion. Refocus. For example, in the focus function starting system described in claim 1, the electronic compass records the angle of the electronic device in three-dimensional space every 100 to 500 ms. The focus function starting system according to claim 1, wherein the allowable error range is 10 degrees or less. The focus function activation system of claim 1, wherein the activation module is further configured to activate an electronic compass and an acceleration sensor to monitor the electronic device when the camera device of the electronic device is activated. The focus function starting system according to claim 1, wherein the preset range of the acceleration is 0.3 N/kg or less. A focusing function starting method is applied to an electronic device, the electronic device comprising a camera device, an electronic compass and an acceleration sensor, the method comprising:
Recording the angle of the electronic compass in the three-dimensional space at regular intervals;
If the difference between the current angle of the electronic device and the last recorded angle is within an allowable error range, determining that the electronic device does not rotate in the three-dimensional space;
If the difference between the current angle of the electronic device and the last recorded angle is not within the allowable error range, determining that the electronic device has a rotation in a three-dimensional space;
Controlling the acceleration sensor to measure the acceleration of the electronic device;
If the acceleration exceeds a preset range, determining that the electronic device is performing a translational motion;
If the acceleration does not exceed the preset range, determining that the electronic device does not perform a translational motion; and when the determination result is that the electronic device rotates in a three-dimensional space or performs a translational motion, the focusing device of the electronic device camera device is activated. Refocus. For example, in the focusing function starting method described in claim 6, the electronic compass records the angle of the electronic device in three-dimensional space every 100 to 500 ms. The focus function starting method according to claim 6, wherein the allowable error range is 10 degrees or less. The method for starting the focus function according to claim 6 of the patent application, before the step of recording the electronic compass measuring the angle of the electronic device in the three-dimensional space at regular intervals, the method further comprises the steps of: when the camera device of the electronic device is activated, starting the electronic compass And an acceleration sensor to monitor the electronic device. The focus function starting method according to claim 6, wherein the preset range of the acceleration is 0.3 N/kg or less.