KR100617546B1 - Mobile communication terminal having a display data processing function and controlling method therefore - Google Patents

Abstract

According to the present invention, in a mobile communication terminal equipped with a camera module, the MSB side data of each pixel of the image data of the camera module is masked and transmitted as a display signal, and if necessary, the LSB side data of each pixel is masked and transmitted as a display signal. An image data processing function including a camera control unit, an MSM unit controlling an image data editing function of the camera control unit, and an LCD panel unit for restoring and displaying a masked edited display signal transmitted from the camera control unit. Provided is a mobile communication terminal and a control method thereof.

In the present invention as described above, the MSB data of each pixel of the image data is first transmitted and displayed on the LCD, and then the remaining LSB data is transmitted to display the complete image on the LCD, thereby displaying a large amount of data in a short time. Even if it is displayed on the screen, the delay time of the screen or the disconnection of the screen does not occur, thereby improving the LCD display characteristics of the terminal accordingly.

Image data, MSB, LSB, end gate, false gate, masking data generator, restoration

Description

Mobile communication terminal having a display data processing function and controlling method therefore}

1 is an explanatory diagram illustrating a mobile communication terminal equipped with a conventional camera.

2 is an explanatory diagram illustrating a mobile communication terminal to which the present invention is applied.

3 is an explanatory diagram illustrating a camera controller of the present invention.

4 is an explanatory diagram illustrating an LCD panel unit of the present invention.]

5 is a flowchart of the present invention.

<Detailed Description of Codes>

1: Mobile communication terminal 2: Camera module

3: camera control unit 4: MSM unit

5 LCD panel 6 Memory unit

7: Address data extractor 8A-D: Masking data generator

9: first AND gate 10: first shift register

11: second endgate 12: oalgate

13: third and gate 14: fourth and gate

15: second shift register 16: address data recovery unit

The present invention relates to a mobile communication terminal equipped with a video data processing function and a control method thereof. In particular, the MSB data of each pixel of the video data is first transmitted and displayed on the LCD, and then the remaining LSB data is transmitted. An image data processing function for displaying an image on an LCD relates to a mobile communication terminal and a control method thereof.

In general, wireless data communication refers to a communication function of wirelessly transmitting and receiving various data such as letters, numbers, and images through a base station system using a portable terminal capable of wireless transmission and reception. That is, a mobile communication system that exchanges or retrieves data in both directions while moving by using various terminals such as a cellular phone, a portable computer, a PDA, and the like. In particular, the mobile communication system divides the service area into hexagonal cells of several km to several ten kilometers in North America in the early 1980s, and uses the same frequency channel repeatedly in the geographically separated cells. The rapid growth of the cellular-phone mobile communication system that implements the radio channel switching function between the cells in accordance with the movement of.

Recently, a third generation mobile communication terminal called IMT-2000, which is equipped with a camera, has been developed and used, and this system is supported by a fixed communication network such as PSTN / ISDN / B-ISDN according to the needs of mobile users. Various communication services such as a mobile communication system that enables the connection by using a wireless link to the information service network containing voice and video data.

Then, referring to the mobile communication terminal equipped with a conventional camera as described above with reference to FIG. 1, the RF unit 71 for processing RF signals transmitted and received through the mobile communication terminal 70, and the RF unit 71 MPU (Micro-processing unit) (72) for controlling the overall function of the mobile communication terminal 70, including a camera module 73 is installed on one side of the mobile communication terminal 70 and the image processing of the subject, The camera controller 74 which stores the image data processed by the camera module 73 in an internal memory (not shown) or controls the function of the camera module 73 and the one side of the mobile communication terminal 70. An LCD panel 75 installed to display various display signals to the outside, an LCD driver 76 for controlling the driving of the LCD panel 75 according to a control signal of the MPU 72, and the MPU 72 It is connected to one end to store various information processed in the mobile communication terminal 70 A memory unit (77).

Meanwhile, referring to the operation of the mobile communication terminal equipped with the conventional camera as described above, first, when the user of the mobile communication terminal 70 wants to capture a specific subject desired by the camera module 73 on which the camera is attached. The camera focuses on the subject and then shoots. Then, the image data captured by the camera module 73 is processed by the camera control unit 74 according to the function control of the MPU 72 and stored in the memory unit 77. At the same time, the camera controller 74 displays the captured image data on the LCD panel 75 through the LCD driver 76. In this case, when the user of the terminal 70 wants to send the captured image screen to another terminal, the MPU 72 reads the image screen from the memory unit 77 and outputs the image screen to the RF unit 71. Then, the RF unit 71 performs an RF signal processing of the input video screen and transmits it to the destination telephone number.

However, the mobile communication terminal equipped with such a conventional camera increases the amount of data as the number of output pixels of the LCD increases or the number of bits allocated to one pixel for clear images increases. Due to the large amount of data, a delay time is generated on the display screen or the screen is frequently disconnected. Therefore, there is a problem in that the LCD display quality of the mobile communication terminal is considerably degraded.

Accordingly, the present invention has been invented to solve the above-mentioned conventional problems, and even if a large amount of data is displayed on the LCD in a short time, no delay time or disconnection of the screen is generated. It is an object of the present invention to provide a mobile communication terminal equipped with a video data processing function which significantly improves and a control method thereof.

Another object of the present invention is to improve the image quality of the terminal by reinforcing the image quality by transmitting the LSB side data of each pixel first and displaying it on the LCD screen when the frame transferred by the camera controller of the terminal is slower than the reference time. The present invention provides a mobile communication terminal having a video data processing function and a control method thereof.

The present invention for achieving the above object is in the mobile communication terminal equipped with a camera module, masking the MSB side data of each pixel of the image data of the camera module to first transmit as a display signal and each pixel if necessary A camera control unit which masks the LSB data and transmits it as a display signal, an MSM unit which controls the image data editing function of the camera control unit, and restores the masked edited display signal transmitted from the camera control unit to an original signal for display Provided is a mobile communication terminal having an image data processing function including an LCD panel.

Another feature of the present invention is a frame rate checking step of checking whether the video data of the mobile communication terminal exceeds the preset number of video frames per unit time, and as a result of checking during the frame rate checking step, the current video data is a preset video per unit time. If the number of frames is exceeded, the MSB extraction transmission step of masking only a plurality of MSB-side data of each pixel of the image data is transmitted to the LCD panel unit, and the original plurality of MSBs by masking image data received after the MSB extraction transmission step. MSB restoration display step of restoring the MSB-side image data on the LCD panel and restoring the image data on the LCD panel, and if the current image data is less than the preset number of image frames per unit time, LSB weight that masks only a plurality of LSB side data among each pixel of And a LSB restoring display step of masking the image data received after the LSB extraction transmission step, restoring the original plurality of LSB side data, and then displaying the restored LSB side image data on the LCD panel. A control method of a mobile communication terminal equipped with a video data processing function is provided.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 2, the apparatus of the present invention is installed on one side of the mobile communication terminal 1 to capture an image of a subject, and MSB data of each pixel of the image data of the camera module 2. And a camera controller (3) for controlling the function of the camera module (2) and masking the LSB-side data of each pixel to a display signal, if necessary. The MSM unit 4 which controls the overall functions of the mobile communication terminal 1, including the image data editing function of (3), and one side of the mobile communication terminal 1, and displays various display signals to the outside. In addition, the LCD panel unit 5 for restoring and displaying the masked edited display signal transmitted from the camera controller 3 to the original signal, and the mobile communication terminal 1 connected to one end of the MSM unit 4 Processed within) It includes a memory unit 6 for storing a variety of information.

As shown in FIG. 3, the camera controller 3 extracts and outputs a plurality of MSB side address data or LSB side address data among the pixels of the image data according to the edit control signal of the MSM unit 4, and outputs the plurality of address data. A first unit for AND-combining the extractor 7 and one address data output from the address data extractor 7 with masking data output from the masking data generator 8A to output only the MSB portion or LSB A first shift register 10 for shifting the AND gate 9 and another address data output from the address data extracting unit 7 by a predetermined bit, for example, by shifting the bit one bit to the right, and the first shift register 10; A second end gay outputting only the MSB or LSB portion by AND combining the output signal of the shift register 10 and the masking data output from the masking data generator 8B. And a 11 and, ohal gate 12 of the first AND gate (9) and the second output an output signal of the AND gate 11 to the logical operation ohal (OR) to the LCD panel portion 5.

In addition, as shown in FIG. 4, the LCD panel 5 includes image data signals output from the false gate 12 of the camera controller 3 and masking data of the masking data generator 8C-D. A second bit for shifting the third and fourth output gates 13 and 14 and the output signal of the fourth AND gate 14 by one bit, for example, by shifting one bit to the right. An address data recovery unit 16 for restoring and outputting a plurality of output signals of the shift register 15 and the second shift register 15 and the third AND gate 13 to the original MSB side or LSB side address data; Include.

Here, the masking data of the masking data generators 8A-D are bit signals for extracting only upper bits.

Next, the control method of the present invention having the above configuration will be described.

The present invention proceeds to the MSB transmission confirmation step (S2) in the initial state (S1), as shown in Figure 5 determines whether the current image data exceeds the predetermined number of image frames per unit time. At this time, if the current image data exceeds the preset number of image frames per unit time as a result of checking during the MSB transmission confirmation step (S2), the process proceeds to the MSB extraction transmission step (S3) and the plurality of MSB data of each pixel of the image data. Mask only and transfer it to the LCD panel. After the MSB extraction transmission step (S3), the process proceeds to the MSB restoration display step (S4), masks the received image data, restores the original MSB side data, and then restores the restored MSB side image data to the LCD panel. Mark on.

On the other hand, if the current image data does not exceed the preset number of video frames per unit time as a result of checking during the MSB transmission check step (S2), the process proceeds to LSB transmission check step (S5) and the current video data is set to the video frame per unit time Determine if it is less than the number. At this time, when the image data is less than the preset number of image frames per unit time as the result of checking during the LSB transmission confirmation step (S5), it is determined that the image is displayed very slowly, and the process proceeds to the LSB extraction transmission step (S6). Only the plurality of LSB-side data of the pixels are masked and transmitted to the LCD panel unit. After the LSB extraction transmission step (S6), the process proceeds to the LSB restoration display step (S7), masks the received image data, restores the original LSB data, and restores the restored LSB image data to the LCD panel. Mark on.

Here, the method of the present invention has been described as extracting and restoring the MSB side data and then restoring the restoring LSB side data. However, any one method may be used. In other words, only the MSB data can be extracted and transmitted, or only the LSB data can be extracted and transmitted.

In other words, when the user of the mobile communication terminal 1 wants to capture a specific subject desired by the user, as shown in FIGS. 3 to 4, the focus of the camera module 2 on which the camera is attached is determined. And then the image is taken. Then, the image data captured by the camera module 2 is processed by the camera control unit 3 according to the function control of the MSM unit 4 and stored in the memory unit 6. At the same time, the camera control unit 3 transmits the captured image data to the LCD panel unit 5. When the captured image data exceeds the preset number of image frames per unit time, the LCD panel unit ( 5) Since the viewer of the image may be somewhat insensitive to the accuracy of the image, only the MSB is transmitted first. On the other hand, when the captured image data is smaller than the preset number of image frames per unit time, the image of the LCD panel 5 is Since the viewer can be sensitive to the accuracy of the image, only the LSB side is processed first.

For example, when the image data picked up in the above process exceeds the preset number of image frames per unit time, the address data extracting unit 7 of the camera controller 3 performs the image data according to the edit control signal of the MSM unit 4. A plurality of MSB side address data is extracted from each pixel of the pixel, and output to the first AND gate 9 and the first shift register 10. Then, the first AND gate 9 combines one address data output from the address data extracting unit 7 with the masking data output from the masking data generators 8A-D to detect only the MSB portion. Output to the gate 12. At this time, the first shift register 10 of the camera controller 3 shifts another address data output from the address data extracting unit 7 by a predetermined bit, for example, by one bit to the right. 11) The second AND gate 11 performs an AND combination with the output signal of the first shift register 10 and the masking data output from the masking data generators 8A-D, so that only the MSB portion is the false gate 12. ) Then, the oar gate 12 performs an OR logic operation on the output signals of the first and second end gates 9 and 11 and outputs the logic signals to the LCD panel 5.

On the other hand, when the image data edited from the false gate 12 of the camera controller 3 is input as described above, the input image data is the third and gate 13 and the fourth and gate of the LCD panel 5. It is inputted in (14), respectively. Then, each of the third and fourth end gates 13 and 14 masks the image data signal output from the false gate 12 of the camera controller 3 to the masking data of the data generators 8A-D. Are output to the second shift register 15 and the address data restoring unit 16 in an AND combination with each other.

At this time, the second shift register 15 outputs the output signal of the fourth AND gate 14 to the address data recovery unit 16 which shifts the output signal by a predetermined bit, for example, by one bit to the right.

Accordingly, the address data recovery unit 16 restores a plurality of output signals respectively inputted from the second shift register 15 and the third end gate 13 to the original MSB side address data and displays them on the LCD panel. .

Here, the process is described as extracting and transmitting only the MSB side data, but the LSB side data extraction process is executed in the same manner except that the process and the extraction signal are different.

As described above, according to the present invention, the MSB data of each pixel of the image data is first transmitted and displayed on the LCD, and then the remaining LSB data is transmitted to display the complete image on the LCD. Even if the LCD is displayed on the screen, the delay time of the screen or the disconnection of the screen does not occur, and thus has the advantage of significantly improving the LCD display characteristics of the terminal.                     

In addition, according to the present invention, when the frame transferred by the camera control unit of the terminal is slower than the reference time, the LSB side data of each pixel is first transmitted and displayed on the LCD screen to enhance the image quality, thereby significantly improving the image quality of the terminal. There is also an effect.

Claims (6)

In the mobile communication terminal equipped with a camera module, A camera controller for masking MSB-side data of each pixel of the image data of the camera module as a display signal first, and if necessary, masking the LSB-side data of each pixel and transmitting it as a display signal, and an image data editing function of the camera controller; And an LCD panel unit for restoring and displaying a masked edited display signal transmitted from the camera controller to an original signal. The address control unit according to claim 1, wherein the camera control unit comprises: an address data extracting unit for extracting and outputting a plurality of MSB side address data or LSB side address data of each pixel of the image data according to the edit control signal of the MSM unit; The first AND gate outputting only the MSB portion or the LSB portion by AND combining the outputted address data with the masking data output from the masking data generator, and another address data outputted from the address data extracting portion. A second shift gate that is AND-combined with a first shift register shifted into bits and output, and masking data output from a masking data generator and an output signal of the first shift register to output only an MSB portion or an LSB portion; And output signals of the first and second AND gates. A mobile communication terminal equipped with an image data processing function, comprising: an OR gate which performs an OR logic operation and outputs it to the LCD panel unit. 2. The LCD panel of claim 1, wherein the LCD panel unit includes a plurality of AND gates for performing an AND combination with the masking data of the masking data generator, and outputs the image data signal output from the false gate of the camera controller, and among the plurality of AND gates. A second shift register for shifting and outputting any one output signal by a predetermined bit, and address data for restoring and outputting a plurality of output signals of the plurality of AND gates to original MSB side or LSB side address data Mobile communication terminal equipped with a video data processing function, characterized in that it comprises a recovery unit. If the video data of the mobile communication terminal exceeds the preset number of video frames per unit time, the MSB extracting transmission step of masking only a plurality of MSB-side data of each pixel of the video data and transmitting it to the LCD panel unit; and receiving after the MSB extraction transmission step. A video data processing function comprising: an MSB restoration display step of masking the restored image data to restore the original plurality of MSB side data, and then displaying the restored MSB side image data on the LCD panel. Control method of communication terminal. If the image data of the mobile communication terminal is less than the predetermined number of image frames per unit time, LSB extraction transmission step of masking only a plurality of LSB data of each pixel of the image data and transmitting it to the LCD panel, and received after the LSB extraction transmission step. Mobile communication with image data processing function comprising a LSB restoring display step of masking the image data to restore the original plurality of LSB side data and then displaying the restored LSB side image data on the LCD panel. Terminal control method. The frame rate checking step of checking whether the video data of the mobile communication terminal exceeds the preset number of video frames per unit time, and if the current video data exceeds the preset number of video frames per unit time as a result of checking during the frame rate checking step The MSB extraction transmission step of masking only a plurality of MSB-side data of each pixel of the data and transmitting it to the LCD panel unit, and masking the image data received after the MSB extraction transmission step, restoring the original plurality of MSB-side data, and then MSB restoration display step of displaying the restored MSB image data on the LCD panel, and if the current image data is less than the preset number of image frames per unit time as a result of checking during the frame rate checking step, a plurality of LSBs of each pixel of the image data LSB extraction and transmitting step of masking only the side data to the LCD panel unit; Image data processing function comprising a LSB restoring display step of masking the received image data after the transmission step, restoring the original plurality of LSB side data, and then displaying the restored LSB side image data on the LCD panel. The control method of the provided mobile communication terminal.

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