KR20060053690A - Multi-view frame with small photos displaying apparatus and method for mobile terminal equipment - Google Patents

Abstract

An apparatus and method for displaying small pictures in a multi-view frame in a mobile communication terminal having a digital camera function. The apparatus includes a display unit for displaying a picture, a setting of a camera mode and a high-pixel continuous shooting mode, input of a shooting command, a user input unit for selecting a picture, and a Joint Photographic Experts Group (JPEG) for shooting and captured images. A camera module for storing encoded data in a built-in memory along with a photo identification (ID), and capturing and storing YUV data provided by the camera module for preview each time shooting is performed in a high-pixel continuous shooting mode; When the high-pixel continuous shooting is completed, the control unit for reducing the size of the stored YUV data so that the entire photographed picture is displayed at the same time on the display unit, and then requests the camera module for at least one or more photos selected by the user from the displayed pictures; Includes memory for storing photos received from the module It is characterized by.

Mobile terminal, multi-view photo display, high pixel continuous shooting, JPEG

Description

MULTI-VIEW FRAME WITH SMALL PHOTOS DISPLAYING APPARATUS AND METHOD FOR MOBILE TERMINAL EQUIPMENT}             

1 is a block diagram of a mobile communication terminal according to an embodiment of the present invention

2 is a ladder diagram for explaining a method of displaying small pictures in a multi-view frame in a mobile communication terminal according to an embodiment of the present invention;

The present invention relates to a mobile communication terminal having a digital camera function, and more particularly, to a device and a method for showing a small picture of a whole picture taken to a user immediately after a high-pixel continuous shooting.

A mobile communication terminal having a digital camera function can show a preview and a series of photographs at the same time (multi-view). The preview function allows the user to preview the image of the subject before the actual picture is taken. The multi-view function is to display a series of pictures taken in small size and show them to the user at the same time.

When the preview or preview function is used, the data generated to be sprayed on the liquid crystal display (LCD) for preview is used separately from the photographing. However, when using the preview data, if the size of the sequential shot is small (e.g. 640 x 240 VGA or less), there is no problem. Occurs. This is due to the limitation of the size of the preview data. In other words, the size of the preview data is set to 320 x 240 or 640 x 480 due to the limitation of the LCD size.

Accordingly, an object of the present invention is to provide an apparatus and method for preventing a JPEG encoding problem even when high-pixel continuous shooting is performed in a mobile communication terminal having a digital camera function.

Another object of the present invention is to provide an apparatus and a method for displaying a whole picture taken as a small picture to a user within a short time immediately after continuous shooting of high pixels in a mobile communication terminal having a digital camera function.

The present invention for achieving the above object is a device for displaying small pictures in a multi-view frame in a mobile communication terminal having a digital camera function, the display unit for displaying pictures, camera mode and high-pixel continuous shooting mode User inputs for setting the settings, inputting a shooting command, selecting a photo, and JPEG (Joint Photographic Experts Group) encoded data about the shot and the captured image, together with the photo identification (hereinafter referred to as ID). Capture and store the camera module to store and YUV data provided by the camera module for preview each time a shooting is performed in the high-pixel continuous shooting mode, and when the high-pixel continuous shooting is completed, reduce the size of the stored YUV data. The whole picture to be displayed on the display all at once, and then the user And a controller for requesting at least one selected photo from the camera module, and a memory for storing the photo provided from the camera module.

In accordance with another aspect of the present invention, there is provided a method of displaying small pictures in a multi-view frame in a mobile communication terminal having a camera module, the method comprising: checking whether a camera mode is selected by a user; Transmitting a camera driving command to the camera module when the selection of the mode is detected, checking whether the high-pixel continuous shooting mode is selected by a user; and when the selection of the high-pixel continuous shooting mode is detected, the high-pixel continuous shooting command is sent to the camera module. Transmitting a signal, checking whether a user inputs a photographing command, and if the photographing command is detected, capturing and storing the YUV data provided from the camera module every time the photographing is made, and the continuous high pixel photographing is performed. When done, reduce the saved YUV data size to get the whole picture on one screen Checking whether at least one photo is selected by the user after displaying the image; and storing a photo received from the camera module by requesting the photo from the camera module when a photo selection is detected by the user; Characterized in that it comprises a.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, specific details such as components of specific circuits are shown, which are provided to help a more general understanding of the present invention, and it is common in the art that the present invention may be practiced without these specific details. It is self-evident to those who have knowledge of the world. In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

1 is a block diagram of a mobile communication terminal according to an embodiment of the present invention.

The mobile communication terminal of the present invention may be any type as long as it has a digital camera function, but the present embodiment will be described assuming a portable telephone having a digital camera function.

The illustrated mobile communication terminal can be broadly divided into a part for a telephone function, a part for a digital camera function, and a part for a user interface.

The illustrated components can be classified as follows in consideration of their inherent or main role. The main control unit, the phone module 10, the first memory 20, the wireless unit 40, the voice processing unit 80, the microphone 81, and the speaker 82 correspond to a portion for a telephone function. The sub-control unit, the multimedia module 50, the second memory 60, and the camera module 100 are for digital camera functions. The key input unit 30 and the display unit 70 are parts for the user interface.

The part for telephone function is demonstrated. The phone module 10 is for controlling a telephone function and may be implemented by a Qualcomm Mobile Station Modem (MSM) chip. The first memory 20 is composed of a ROM, a RAM, and the like, and stores programs and related data for various operations. The radio unit 40 includes a radio frequency (RF) transmitter for upconverting and amplifying a frequency of a signal to be transmitted, and an RF receiver for low noise amplifying and downconverting a received signal. The radio unit 40 receives the baseband signal from the phone module 10 and converts the baseband signal into an intermediate frequency, and then converts the radio frequency signal into a high frequency (RF) signal and transmits it to the base station through the antenna, or conversely, a high frequency signal received from the base station through the antenna. After converting to an intermediate frequency, it is converted into a baseband signal and provided to the phone module 10. When the microphone 81 converts the user's voice into an electrical signal, the voice processing unit 80 performs pulse code modulation (PCM), and conversely, converts the pulse code modulation signal into an electrical signal to the speaker 82. To output an audible sound.

The part for a digital camera function is demonstrated. The multimedia module 50 performs gamma correction and color correction on JPEG or YUV signals in units of frames output from the camera module 100. Although not shown, the multimedia module 50 also includes a JPEG codec for still image compression and an MPEG codec for video compression. The multimedia module 50 provides a still image or video data to the display unit 70. The second memory 60 stores captured image (photo) data. Although not shown, an external memory may be further provided to store a larger amount of captured image data. The camera module 100 for the digital camera function includes a lens unit 91, an imaging device 92, a signal processing unit 93, a JPEG codec 94, and a third memory 95. The imaging device 92 may be implemented as a Charge Coupled Device (CCD) or a Complementary Metal Oxide Semiconductor (CMOS).

The lens unit 91 inputs light reflected from the subject. The imaging device 92 converts and outputs an optical signal input through the lens unit 91 into an electrical signal having red, green, and blue color and brightness values. The signal processor 93 may be implemented by a digital signal processor (DSP), and correlated double sampling and automatic gain control (CDS / AGC) of the signal output from the imaging device 92 may be performed. And convert it into a digital signal. The JPEG codec 94 is for image compression. The third memory 95 is used for temporarily storing data necessary for an image processing operation of the JPEG codec 94 and as a memory for storing captured image data. In addition, on the third memory 95, an on-screen display for displaying various information related to camera operation (for example, menus such as setting or releasing a shooting mode, continuous shooting, panorama, macro, etc.) according to an embodiment of the present invention (On) Screen Display (OSD) data may be provided.

The part for a user interface is demonstrated. As a user input unit, the key input unit 30 includes a plurality of keys for the user to perform numeric or character input or a function, and provides the corresponding key input data to the phone module 10 when a key input is detected. The display unit 70 may be implemented as an LCD, and under the control of the multimedia module 50, the display unit 70 displays a current state, a menu, a background image, or a captured image of the mobile communication terminal. A touch screen may be provided on the display unit 70.

The illustrated configuration is only one embodiment, and various modifications are possible. For example, the voice processing unit 80 and the phone module 10 may be made of one chip. In addition, the phone module 10 may further have a separate display unit, and key input data output from the key input unit 30 is input to the multimedia module 50 instead of the phone module 10 and, if necessary, the phone module 10. It could be implemented to pass Furthermore, the phone module 10 and the multimedia module 50 may be made of one chip.

In the above description, the part for the telephone function is taken as an example of voice communication, but of course, a data communication function of exchanging packet data or video data may be performed.

Referring to FIG. 1, the principle of displaying a multi-view frame of small pictures during high pixel continuous shooting is as follows.

The signal processor 93 of the camera module 100 outputs YUV data through two channels. One is F _YUV1 for shooting and the other is F _YUV2 for preview. They are different in size. The camera module 100 performs JPEG encoding on the captured image F _YUV1 and stores the result in the third memory 95.

In the preview state before the shooting, the multimedia module 50 transmits the YUV data F _YUV2 to the display unit 70 so as to be previewed by the user, and at the time of shooting (every time shooting is performed in the high-pixel continuous shooting mode). The input F _YUV2 will be captured and saved.

In addition, the multimedia module 50 knows only the ID and data size of each picture stored in the internal memory of the camera module 100, the third memory 95, and then reduces the size of the YUV data stored immediately after continuous shooting. Show all shots (eg 6-12) in small shots within. The ID and data size of each picture is sent from the camera module 100 to the multimedia module 50 immediately after capturing each picture, and the preview F _YUV2 is stored corresponding to the picture ID. The data size is used as information for distinguishing each picture. The number of pixels forming a picture is the same, but the data size is different for each picture. In other words, a picture with a lot of black has a high data compression rate and a small data size, while a picture with a colorful color has a large data size, and an edge has a high data compression ratio and a small data size compared to a non-contour part. Is different. Therefore, when storing data continuously without any special classification, it is necessary to remember the data size of each picture so that each picture can be distinguished.

Multi-view frame When viewing the small pictures displayed and the user selects a picture to be stored, the multimedia module 50 requests the picture from the camera module 100 using the picture ID. When the camera module 100 sends JPEG data of the corresponding picture, the camera module 100 stores the JPEG data in the second memory 60.

2 is a ladder diagram for explaining a method of displaying small pictures in a multi-view frame in a mobile communication terminal according to an embodiment of the present invention.

The user selects the camera mode from the so-called 'camera mode key' for performing the camera mode provided in the key input unit 30 or the menu setting mode of the mobile communication terminal.

In operation 205, the multimedia module 50 recognizes the camera mode setting and transmits a camera driving command to the camera module 100 in operation 207. In response to the camera driving command, the camera module 100 starts to transmit the YUV signal for preview in operation 353.

The user selects a shooting mode after setting the camera mode. In step 209, the multimedia module 50 checks whether the user has selected high-pixel continuous shooting. If the high-pixel continuous shooting is selected, the multimedia module 50 detects a shutter key input in step 211, and transmits a high-pixel continuous shooting command to the camera module 100 in step 213.

In operation 355, the camera module 100 performs continuous high pixel shooting. The multimedia module 50 also captures and stores the YUV data, as shown in step 215 (at the same time as each shooting in succession). The YUV data is sent from the camera module 100 of FIG. 1 (F _YUV2 ).

In step 357, the camera module 100 encodes the captured image F _{YUV1 and} stores the JPEG image in the third memory 95. Then, in step 359, the camera module 100 transmits a picture ID and a data size to each multimedia module 50. do. In step 361, the camera module 100 checks whether the number of continuous shots has been taken (for example, six), or returns to step 355 to perform the next shot. Repeat until you lose.

When the continuous shooting is completed, the multimedia module 50 reduces the size of the YUV data captured and stored in the continuous shooting in step 217 to display the multi-view frame of the small pictures on the display unit 70. In operation 219, it is checked whether the user selects a picture. If the user has selected at least one picture, the multimedia module 50 requests the picture from the camera module 100 in step 221. In the picture request message, include the picture ID so that the picture is known.

In operation 363, the camera module 100 detects a picture ID included in the received picture request message and finds JPEG data of the picture in the third memory 95 based on the picture ID. The found JPEG data is transmitted to the multimedia module 50 in step 365.

In step 223, the multimedia module 50 processes the received JPEG data and stores the received JPEG data in the second memory 60. As a result, the multimedia module 50 may receive and process only a few selected pictures among them, not all the taken pictures, and the second memory 60 may store only the few pictures.                     

In the illustrated example, it is assumed that the number of selected photographs is six, but may vary according to the size of the memory.

Meanwhile, in the detailed description of the present invention, specific embodiments have been described, but various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined not only by the scope of the following claims, but also by the equivalents of the claims.

As described above, the present invention can show the entire photograph taken as a small picture to the user in a short time immediately after the high pixel continuous shooting. The multimedia module does not need to perform JPEG encoding on all the pictures taken, and only a few selected ones are received from the camera module in JPEG encoded state, thus reducing the load. Because you can save, you can increase the efficiency in memory usage.

Claims (10)

In the mobile communication terminal having a digital camera function, A display unit for displaying a photo, A user input unit for setting a camera mode and a high pixel continuous shooting mode, inputting a shooting command, and selecting a photo; A camera module for storing the JPEG encoded data of the photographing and the captured image together with the photo ID in the internal memory; The camera module captures and stores YUV data provided for previewing each time a high-pixel continuous shooting mode is taken, and when the high-pixel continuous shooting is completed, reduce the size of the stored YUV data and display the entire photograph at once. A controller for requesting the camera module to at least one or more photos selected by the user from among the displayed photos; And a memory for storing a picture provided from the camera module. The method of claim 1, The controller receives a picture ID provided by the camera module, stores the captured YUV data in correspondence with the picture ID, and transmits the picture ID together with the camera module when the selected picture is requested. Photo multi-view frame display. The method of claim 2, The controller further receives a picture size provided by the camera module, and the picture size is used as information for distinguishing each picture stored in a memory. The method of claim 1, The photograph provided from the camera module is characterized in that the camera module is to take a picture in response to the high-pixel continuous shooting command, and then stored in the memory JPEG encoded data generated by performing the JPEG encoding for the captured image. In the method of displaying a photo multi-view frame of a mobile communication terminal having a camera module, Checking whether the camera mode is selected by the user; Transmitting a camera driving command to the camera module when the selection of the camera mode is detected, and checking whether the high-pixel continuous shooting mode is selected by a user; When the selection of the high pixel continuous shooting mode is detected, transmitting a high pixel continuous shooting command to the camera module and checking whether a user inputs a shooting command; Capturing and storing the YUV data provided from the camera module every time the photographing is performed, when the photographing command is detected; When the high-pixel continuous shooting is completed, reducing the size of the stored YUV data to display the entire photo on one screen and checking whether at least one photo is selected by the user; And storing a picture received from the camera module by requesting the corresponding picture from the camera module when a photo selection by the user is detected. The method of claim 5, Transmitting a high-pixel continuous shooting command to the camera module when an input of the shooting command is detected, and then receiving a photo ID from the camera module, The captured YUV data is stored to correspond to the photo ID. The method of claim 6, Requesting a corresponding picture from the camera module using the picture ID. The method of claim 5, Receiving a picture size from the camera module, And the picture size is used as information for distinguishing each picture stored in the memory. The method of claim 5, And the camera module starts transmitting a YUV signal for preview upon receiving the camera driving command. The method of claim 5, The photograph received from the camera module is characterized in that the camera module has stored in the memory the JPEG encoded data generated by performing a JPEG encoding for the photographed image after the photographing in response to the high-pixel continuous shooting command.

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