CN1311702C - Mobile communication device with automatic stroboflash elimination function and method thereof - Google Patents

Abstract

The present invention relates to a mobile communication device with automatic flicker removal function and its method, wherein, the automatic flicker removal method is to automatically provide location data by the mobile communication device, and the location data indicates the country or country where the mobile communication device is located at that time area. Then generate corresponding power frequency data according to the location data. Finally, set the digital image capture device according to the power frequency data to eliminate stroboscopic flicker. According to the preferred embodiment of the present invention, the mobile communication device also includes the step of detecting/contacting the telecommunications service network. Then the telecommunication service network transmits the location information to the mobile communication device.

Description

Mobile communication device with automatic flicker removal function and method thereof

technical field

The present invention relates to a method for automatically removing flicker of a digital image capture device, and in particular to a method for automatically removing flicker of a digital image capture device built in a mobile communication device and its device.

Background technique

Digital image capture devices have always played an indispensable role in modern life. Whether it is recording life or collecting evidence, it is the stage where digital image capture devices perform their functions, especially digital cameras.

Another important product in modern life is the mobile communication device. Due to the mobility of mobile communication devices and the large demand of users for communication, almost everyone owns a mobile phone. Among various mobile communication devices, the mobile phone is the most popular representative among them.

However, due to consumer considerations and technological advances, the combination of digital image capture devices and mobile communication devices has become a new product development trend. For example, almost all new mobile phones popular in the market have built-in digital cameras, and some mobile phones even have the function of digital cameras. However, various digital image capture devices must face the problem of light source frequency matching when shooting images, or when sampling images.

Generally, when shooting indoors, the lighting equipment that provides the light source required for photography is powered by a general household AC power supply (hereinafter referred to as mains power). Using the lighting source provided by the mains, its brightness often changes according to the voltage of the mains. When the voltage of the commercial power is at the maximum value, the lighting source is the brightest, and when the voltage is at the minimum, the lighting source is the darkest. In other words, the brightness of the illumination light source provided by the commercial power is actually alternately changing from light to dark, which is called a strobe phenomenon. For example, the mains frequency in Taiwan is F=60Hz, so the light and dark period of the light source is T=1/F=1/60=0.017 seconds. Normally, the human naked eye cannot detect such a rapid change of the light source, but feels no different from natural light. However, when a digital image capture device shoots an image, there will often be obvious flicks in the picture at the moment of shooting due to the change of the brightness of the light source. In order to improve the stroboscopic phenomenon, the exposure gain of the image sensor chip in the digital image capture device is generally adjusted according to the corresponding external environment, so as to achieve uniform brightness. Therefore, it is necessary to properly adjust the digital image capture device according to the mains frequency (usually 50 Hz or 60 Hz) of the place where the shooting is performed.

At present, manufacturers have two solutions for eliminating stroboscopic flicker in digital image capture devices. One is to pre-set the matching circuit according to the target sales area, but it cannot be adjusted. If the digital image capture device sold in a region with a mains power of 50Hz (such as Europe) is brought to a region with a mains power of 60Hz (such as Taiwan) for use , flick will be generated due to strobe. The other will provide the function of manually setting the relevant parameters, which provides greater flexibility, but because the user needs to manually set, in addition to increasing the inconvenience of the user, it may also cause the user to provide manual settings due to improper settings. The design of the setting is useless.

Contents of the invention

The object of the present invention is to provide a method for automatically removing stroboscopic flicker in a digital image capture device in a mobile communication device, so that the user does not need to set the operation of the digital image capture device in the mobile communication device, but can follow the The country or region where it is located automatically completes the matching setting of the mains frequency.

Another object of the present invention is to provide a mobile communication device with the function of automatically removing stroboscopic flicker, and realize the automatic removal of stroboscopic function of the digital image capture device in the mobile communication device with a specific device, so that the user does not need to adjust the mobile communication device. The operation setting of the digital image capture device in the camera can automatically complete the matching setting of the mains frequency according to the country or region where it is located.

The present invention proposes a method for automatically removing stroboscopic flicker in a digital image capture device in a mobile communication device. In this method, the mobile communication device automatically provides location data, and the location data indicates the country or region where the mobile communication device is located at that time. Then generate corresponding power frequency data according to the location data. Finally, set the digital image capture device according to the power frequency data to eliminate stroboscopic flicker.

According to the preferred embodiment of the present invention, the method for automatically removing strobe in a digital image capture device in a mobile communication device further includes a step of the mobile communication device detecting/communicating with a telecommunications service network. Among them, the telecommunications service network provides mobile communication services. Then the telecommunication service network transmits the location information to the mobile communication device.

According to the method for automatically removing stroboscopic flicker in a digital image capture device in a mobile communication device according to a preferred embodiment of the present invention, the step of generating corresponding power frequency data according to the location data includes providing a location power frequency database. Then, according to the information of the location, query and obtain the corresponding power frequency information in the power frequency database of the location.

According to the preferred embodiment of the present invention, the method for automatically removing strobe in a digital image capture device in a mobile communication device, the above mobile communication device is a mobile phone. This mobile phone is for example a mobile phone suitable for the pan-European digital mobile phone system (GSM, Global System for Mobile Communications).

According to the method for automatically removing stroboscopic flicker in a digital image capture device in a mobile communication device according to a preferred embodiment of the present invention, the above-mentioned location data includes a mobile country code (MCC, mobile country code), and the corresponding location data is generated according to the location data. In the power frequency data step, the corresponding power frequency data is generated according to the MCC.

According to the method for automatically removing stroboscopic flicker in a digital image capture device in a mobile communication device according to a preferred embodiment of the present invention, the above-mentioned location data includes a mobile network code (MNC, mobile network code), and the corresponding location data is generated according to the location data. In the step of the power frequency data, the corresponding power frequency data is also generated according to the MNC.

The invention proposes a mobile communication device with the function of automatically removing stroboscopic flicker. The mobile communication device includes a wireless communication module, a digital image capture device, a local power frequency database module and a central processing module. The wireless communication module is used to connect the mobile communication device to the telecommunication service network. A digital image capture device is used to capture images. The location power frequency database module is used to receive location data and output corresponding power frequency data. The central processing module is respectively coupled to the wireless communication module, the digital image capture device and the local power frequency database module. Among them, the central processing module obtains the location information provided by the telecommunications service network through the wireless communication module, and according to the location information, inquires and obtains the corresponding power frequency data in the location power frequency database module, and then adjusts the number according to the power frequency data. The image capture timing of the image capture device is to match the local power frequency.

According to the mobile communication device with automatic flicker removal function described in a preferred embodiment of the present invention, the mobile communication device is a mobile phone. This mobile phone is suitable, for example, for the pan-European digital mobile phone system (GSM, Global System for Mobile Communications).

According to the mobile communication device with automatic flicker removal function described in a preferred embodiment of the present invention, the location information includes mobile country code (MCC, mobile country code). The central processing module further inquires and obtains corresponding power frequency data in the local power frequency database module according to the MCC.

According to the mobile communication device with automatic strobe removal function described in a preferred embodiment of the present invention, the above-mentioned location information includes a mobile network code (MNC, mobile network code), and the central processing module is more in accordance with the MNC in the location power frequency database model Query and obtain the corresponding power frequency information in the group.

According to the mobile communication device with automatic flicker removal function described in a preferred embodiment of the present invention, the above-mentioned digital image capture device is a digital camera.

Because the present invention utilizes the location information obtained from the telecommunication service network by the mobile communication device, it can easily obtain the mains frequency information of the country or region where it is located (for example, by looking up a table), and then automatically completes the corresponding frequency matching setting. Therefore, the present invention enhances the applicability and ease of use of the mobile communication device equipped with the digital image capture device, and reduces unnecessary operations of the user.

In order to make the above and other objects, features and advantages of the present invention more comprehensible, two preferred embodiments will be described in detail below together with the accompanying drawings.

Description of drawings

FIG. 1 is a flow chart of a method for automatically removing stroboscopic flicker in a digital image capture device in a mobile communication device according to a preferred embodiment of the present invention.

FIG. 2 is a block diagram of a mobile phone with an automatic flicker removal function according to a preferred embodiment of the present invention.

Detailed ways

In order to make the implementation description of the present invention clearer, a mobile phone is taken as an example below, and those familiar with the technical field can easily deduce it to other mobile communication devices. In addition, the digital image capture device built in the mobile communication device is specifically exemplified here as a digital camera, and those skilled in the art can also deduce it to other digital image capture devices.

FIG. 1 is a flow chart of a method for automatically removing stroboscopic flicker in a digital image capture device in a mobile communication device according to a preferred embodiment of the present invention. Please refer to Figure 1. Generally, a mobile phone will automatically detect a telecommunications service network and communicate with it after being turned on. In this embodiment, the mobile phone is, for example, a mobile phone suitable for a pan-European digital mobile phone system (GSM, Global System for Mobile Communications), and the telecommunication service network is, for example, a public mobile phone network (PLMN, Pulbic Land Mobile Network) . The telecommunications service network will verify whether the mobile phone is a legitimate user, and if the authentication result is a legitimate user, the location data will be passed to the mobile phone. According to this embodiment, the location information will include mobile country code (MCC, mobile country code) and mobile network code (MNC, mobile network code). This MCC and MNC are unique. For example, if the MCC is 466, it represents Taiwan, and 310 represents the United States; when the MCC is 466 and the MNC is 92, it means that the telecommunications service network is China Taiwan Chunghwa Telecom, and the MCC and MNC When they are 466 and 01 respectively, it means Far EasTone Telecom, Taiwan, China.

When the authentication/communication between the mobile phone and the telecommunication service network is completed, the mobile phone has obtained the location information (step S101). The mobile phone generates corresponding power frequency data according to the location data obtained. In this embodiment, the power frequency database of the location is provided (step S102). Or the city power frequency data of the area (step S103). Currently, the mains frequency in various countries/regions is roughly 60 Hz or 50 Hz. For example, the mains frequency in Taiwan and the United States is 60 Hz, while that in Europe is 50 Hz. Therefore, step S104 is to judge whether the mains frequency data received/obtained is 60Hz, if so, adjust the digital camera built in the mobile phone to match the photography mode of 60Hz (step S105), otherwise, adjust It is a shooting mode that can match 50Hz (step S106).

Based on the above methods, another preferred embodiment is given below to illustrate the present invention more clearly. FIG. 2 is a block diagram of a mobile phone with an automatic flicker removal function according to a preferred embodiment of the present invention. Please refer to FIG. 2 , in which the mobile phone 200 includes a wireless communication module 210 , a central processing module 220 , a location power frequency database module (hereinafter referred to as the database module) 230 and a digital camera 240 . After the mobile phone 200 is turned on, the wireless communication module 210 will automatically detect the telecommunication service network (such as the GSM system) 250 through the radio signal 201 and communicate with it. The telecommunications service network 250 will verify whether the mobile phone is a legitimate user, and if the verification result is a legitimate user, the location data will be transmitted to the mobile phone 200 . The location information in this embodiment includes MCC code and MNC code, for example. For example, if the MCC is 466, it represents Taiwan, China; when the MCC is 466 and the MNC is 97, it means that the telecommunications service network is Taiwan Mobile, and when the MCC and MNC are 466 and 88 respectively, it means Taiwan Hexin Telecom .

When the authentication/communication between the mobile phone 200 and the telecommunications service network 250 is completed, the mobile phone 200 has obtained the location data. In the mobile phone 200 , the wireless communication module 210 obtains location information from the radio signal 201 and sends it to the central processing module 220 . The central processing module 220 searches the database module 230 according to the location data and obtains corresponding power (mains) frequency data. At present, the mains frequency in various countries/regions is roughly 60 Hz or 50 Hz. For example, the mains frequency in Taiwan and the United States is 60 Hz, while that in mainland China and Europe is 50 Hz. After the central processing module 220 obtains the power frequency information from the database module 230 , it can determine which mains frequency matching mode the digital camera 240 should be set to, and send a setting signal to the digital camera 240 . For example, in Taiwan, China, the central processing module 220 will send a setting signal to the digital camera 240 to adjust the digital camera 240 to match the shooting mode of 60Hz. Therefore, the user does not need any setting action, and the mobile phone will automatically adjust the appropriate mains frequency matching mode for the country/region where it is located to eliminate stroboscopic flicker.

Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Anyone familiar with the art can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore The scope of protection of the present invention should be defined by the scope of the appended patent application.

Claims (14)

1. A method for automatically removing strobe in a digital image capture device in a mobile communication device, comprising the following steps: a location information is automatically provided by the mobile communication device, wherein the location information indicates the current location of the mobile communication device; generate a corresponding power frequency data according to the location data; and According to the power frequency data, the digital image capture device is set to eliminate stroboscopic flicker. 2. The method for automatically removing flicker in a digital image capture device in a mobile communication device as claimed in claim 1, further comprising: The mobile communication device detects and communicates with a telecommunications service network, wherein the telecommunications service network provides a mobile communication service; and The telecommunication service network transmits the location information to the mobile communication device. 3. The method for automatically removing stroboscopic flicker in a digital image capture device in a mobile communication device as claimed in claim 1, wherein the step of generating the corresponding power frequency data according to the location data comprises: Provide a local power frequency database; and Query and obtain the corresponding power frequency data in the power frequency database of the location according to the location data. 4. The method for automatically removing stroboscopic flicker in a digital image capture device in a mobile communication device as claimed in claim 1, wherein the mobile communication device is a mobile phone. 5. The method for automatically removing flicker in a digital image capture device in a mobile communication device as claimed in claim 4, wherein the mobile phone is suitable for a pan-European digital mobile phone system. 6. The method for automatically removing stroboscopic flicker in a digital image capture device in a mobile communication device as claimed in claim 5, wherein the location data includes a mobile country code, and the corresponding power frequency is generated according to the location data In the data step, the corresponding power frequency data is generated according to the mobile country code. 7. The method for automatically removing stroboscopic flicker in a digital image capture device in a mobile communication device as claimed in claim 5, wherein the location data includes a mobile network code, and the corresponding power frequency is generated according to the location data In the data step, the corresponding power frequency data is further generated according to the mobile network code. 8. The method for automatically removing flicker in a digital image capture device in a mobile communication device as claimed in claim 1, wherein the digital image capture device is a digital camera. 9. A mobile communication device with automatic flicker removal function, comprising: a wireless communication module for enabling the mobile communication device to communicate with a telecommunications service network; a digital image capture device for capturing images; a location power frequency database module, used to receive a location data and output a corresponding power frequency data; and a central processing module, respectively coupled to the wireless communication module, the digital image capture device and the location power frequency database module; Wherein, the central processing module obtains the location data provided by the telecommunication service network through the wireless communication module, and queries the location power frequency database module according to the location data and obtains the corresponding power frequency data and adjusting an image capture timing of the digital image capture device to match the local power frequency according to the power frequency data. 10. The mobile communication device with automatic flicker removal function as claimed in claim 9, wherein the mobile communication device is a mobile phone. 11. The mobile communication device with automatic flicker removal function as claimed in claim 10, wherein the mobile phone is suitable for a pan-European digital mobile phone system. 12. The mobile communication device with the function of automatically removing stroboscopic flicker as claimed in claim 11, wherein the location information includes a mobile country code, and the central processing module also determines the power frequency of the location according to the mobile country code. Query and obtain the corresponding power frequency data in the database module. 13. The mobile communication device with the function of automatically removing stroboscopic flicker as claimed in claim 11, wherein the location information includes a mobile network code, and the central processing module also determines the power frequency of the location according to the mobile network code. Query and obtain the corresponding power frequency data in the database module. 14. The mobile communication device with automatic flicker removal function as claimed in claim 9, wherein the digital image capture device is a digital camera.

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