JP2003122339A - Mobile communication terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable image display effectively using the display area of a display unit by displaying image data to the best size all the times according to the display area size of the display unit. SOLUTION: When the received image data are displayed on an LCD 34, a display size comparing and deciding function 21a of a main control part 21 compares the display size of the image data to be displayed with the display area size of the LCD 34 to decide their large/small relation. When the display size of the image data is smaller than the display area size of the LCD 34, an enlargement display control function 21b enlarges the image data by a multimedia processing part 24 according to the ratio and displays the image data on the LCD 34. When the display size of the image data is larger than the display area size of the LCD 34, a reduction/scrolling display control function 21c reduces the image data by the multimedia processing part 24 according to the ratio and displays the data on the LCD 34.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile communication terminal having a function of displaying received image data or image data read from an external device such as an external camera, a personal computer or a memory on a display.

[0002]

2. Description of the Related Art Generally, a mobile communication terminal such as a mobile phone has a display using a liquid crystal display (LCD) or the like,
Information indicating the operating state and functions of the terminal, including transmitted / received data, is displayed on this display.

On the other hand, recently, for example, W-CDMA (Wideband)
-A terminal having a function of transmitting image data together with voice data and displaying the image data on a display has been developed, such as a mobile communication terminal used in a mobile communication system adopting the Code Division Multiple Access method. ing. As the encoding method of the image data, for example, MPEG4 (Moving Picture Experts Group 4) is used for moving images.
However, for still images, JPEG (Joint Photogra
Phic Experts Group) is used, and the display size of image data is generally defined by these standards.

[0004]

However, the display area size of the display unit provided in the mobile communication terminal varies depending on the model, and it is not said that the display size of the image data matches the display area size of the display unit. Not exclusively. Therefore, when the image data is displayed on the display unit in its original size, if the display size of the image data is smaller than the display area size of the display unit, the visibility is reduced, while the display size of the image data is displayed on the display unit. If the size is larger than the area size, some parts are not displayed and the listability is impaired.

The present invention has been made in view of the above circumstances, and an object thereof is to enable image data to be always displayed in an optimum size in accordance with the display area size of a display device. (EN) Provided is a mobile communication terminal capable of always making an optimum image display by effectively utilizing a display area of a container.

[0006]

In order to achieve the above object, a first invention is a mobile communication terminal having a function of displaying image data captured from the outside on a display device. Comparing means for comparing the display size with the display area size of the display unit and display control means are provided. When the display size of the captured image data and the display area size of the display unit are different as a result of the comparison by the comparison unit, the display control unit displays the captured image data in the display unit. The image data is enlarged or reduced to a size corresponding to the size of the display area, and the processed image data is displayed on the display.

Therefore, according to the first aspect of the invention, the display size of the received image data or the image data read from an external device such as an external camera or a memory is different from the display area size of the display provided in the terminal. Even if
The image data is always displayed in an appropriate size corresponding to the display area size of the display. Therefore, it is possible to prevent the problem that the display size of the image data is too small compared to the display area of the display device to impair the visibility, and the display size of the image data is too large compared to the display area of the display device to prevent the list display. As a result, the display area of the display device can be effectively used to enable optimum image display at all times.

The present invention also provides a display control means,
Determine whether the aspect ratio between the display size of the captured image data and the display area size of the display unit matches,
If they do not match, the image data is enlarged or reduced so that either the vertical or horizontal size of the captured image data corresponds to the vertical or horizontal size of the display. I am trying. By doing so, even if the aspect ratios of the display size of the image data and the display area size of the display do not match, effective scaling processing can be performed.

Further, the present invention is characterized in that the display control means selectively displays a part of the image data, which has been subjected to the original size or the enlarged / reduced size, on the display when the image data exceeds the size of the display area. . This way,
The user can specify the enlargement / reduction ratio by a key input operation or the like, so that the image data can be displayed in a desired size even when the display size of the image data is larger than the display area size of the display. Further, for example, even when displaying image data in which it is difficult to determine the contents when reduced, it is possible to select and display a necessary portion of the image data without being unconditionally reduced.

Further, as described above, while a part of the image data is displayed on the display device in the actual size, the scroll operation by the user is monitored, and the display portion of the image data on the display device is displayed according to the user's scroll operation. It is better to control to change. By doing this, even if there is a part that is not displayed as a list by displaying the image data in full size,
By scrolling, all parts of the image data can be displayed without omission.

On the other hand, a second aspect of the present invention includes a specifying means for detecting a motion state in the captured image data and specifying a display target range based on the detection result, and the display specified by the specifying means. Compare the display size of the target range with the display area size of the display unit. When the display size of the specified display target range and the display area size of the display unit are different as a result of this comparison, the specified display target range is enlarged to a size corresponding to the display area size of the display unit. Alternatively, the image data after the reduction processing is displayed on the display device.

Therefore, according to the present invention, for example, a moving range in which a human is shown in moving image data is specified, and a non-moving part such as a background part is cut. Then, the size of the specified display target range is enlarged or reduced so as to be the size corresponding to the display area size of the display device, and is displayed. That is, only the originally required portion of the image data is displayed in an appropriate size corresponding to the display area size of the display. Therefore, the user can clearly see only the necessary portion of the image data.

According to a third aspect of the present invention, there is provided a specifying means for detecting a state of motion in the captured image data and specifying a display target range based on the detection result. Either one of the display size and the display size of the display target range specified by the specifying means is selected and compared with the display area size of the display. Then, as a result of this comparison, when the display size of the captured image data or the specified display target range and the display area size of the display are different, the captured image data or the specified display target range Is enlarged or reduced to a size corresponding to the display area size of the display, and the image data after this processing is displayed on the display.

Therefore, according to the present invention, the captured image data and the display target range specified from the image data can be selectively displayed, and any of these can be displayed. It can be displayed in an appropriate size corresponding to the display area size of the container.

Specifically, for example, it is determined whether the captured image data is a still image or a moving image.
Then, in the case of a still image, the display size of the captured image data is compared with the display area size of the display,
Enlargement / reduction processing is performed based on the result and displayed. On the other hand, in the case of a moving image, the display size of the specified display target range is compared with the display area size of the display unit, and based on the result, enlargement / reduction processing is performed to display the image. By doing so, it is possible to automatically select whether to display the entire image or only the specified display target range depending on whether the image data to be displayed is a still image or a moving image. .

Further, when the captured image data is a moving image, it is determined whether the display target range of the image data can be specified and displayed. Then, when it is determined that it is possible, the display size of the specified display target range is compared with the display area size of the display unit, and based on the result, enlargement / reduction processing is performed to display. On the other hand, when it is determined that it is impossible, the display size of the captured image data is compared with the display area size of the display unit, and the enlargement / reduction processing is performed based on the result to display. Good.

In this way, even in the case of a moving image, for example, when the range of motion cannot be specified, or when the user wants a list display of the entire image without wanting a display mode in which the display target range is specified. In addition, it is possible to display a list of the entire moving images.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an external configuration diagram of a mobile phone terminal which is an embodiment of a mobile communication terminal according to the present invention.

In addition to the voice communication function, this portable telephone terminal has a multimedia communication function such as television telephone communication, a mail transmitting / receiving function, a Web browsing function, a telephone directory function,
It has an electronic notebook function, and its front panel has a speaker 32 as a receiver and a liquid crystal display (LCD) 3
4, the key input unit 35 and the microphone 3 as a transmitter
1 is provided. An extendable antenna 11 and a camera 33 are attached to the upper part of the housing. The camera 33 employs a solid-state image sensor such as a CMOS or CCD and can capture a still image or a moving image. Further, a mounting portion for the power supply portion is provided on the back surface of the housing, and the power supply portion constituting the battery pack is detachably mounted on this mounting portion.

The key input section 35 is a dial key 35.
1 and a function key group 352. Of these, the function key group 352 includes a multi-contact type key 353 called a multi-function key, a photographing key 354 of the camera 33, and the like, in addition to a function key for sending and receiving and a clear key.

On the other hand, the circuit of the mobile phone terminal is constructed as follows. FIG. 2 is a circuit block diagram showing the configuration. This mobile phone terminal includes a wireless unit 1, a baseband unit 2, an input / output unit 3, and a power supply unit 4.

In the figure, a radio frequency signal arriving from a base station (not shown) via a radio channel is an antenna 1
After being received at 1, the signal is input to the receiving circuit (RX) 13 via the antenna duplexer (DUP) 12. Receiver circuit 13
Comprises a high frequency amplifier, a frequency converter and a demodulator.
Then, the radio signal is low-noise amplified by a low-noise amplifier, and then a frequency synthesizer (SY) is used in a frequency converter.
N) The frequency is converted to a reception intermediate frequency signal or a reception baseband signal by mixing with the reception local oscillation signal generated from N) 14, and the output signal is digitally demodulated by a demodulator. As the demodulation method, for example, an orthogonal demodulation method corresponding to the QPSK method and a spectrum despreading method using a spread code are used. The frequency synthesizer 1 described above
The frequency of the received local oscillation signal generated from the signal No. 4 is designated by the main controller 21 provided in the baseband unit 2.

The demodulated signal output from the demodulator is input to the baseband unit 2. The baseband unit 2 includes a main control unit 21, a demultiplexing unit 22, a voice code decoding unit (hereinafter referred to as a voice signal processing module) 23, a multimedia processing unit 24, an LCD control unit 25, and a memory unit. Two
6 and.

The demodulated packet is supplied from the main controller 21 to the demultiplexer 22. The demultiplexing unit 22 is, for example,
Performs demultiplexing processing of packets called MUX-PDU defined by ITUT H.223. That is, at the time of reception, the audio data, the image data, and the control data included in the demodulated packet are separated according to the contents of the header. Of these, the audio data is supplied to the audio signal processing module 23, for example, A
It is decoded by a voice code decoding method such as MR (Adaptive MultiRate). The digital audio signal expanded by this decoding process is converted into an analog audio signal by a digital / analog converter (not shown) (hereinafter referred to as a D / A converter), and then the speaker 32 of the input / output unit 3 is used.
It is output in a loud voice.

On the other hand, the image data is supplied to the multimedia processing section 24 where it is subjected to image decoding processing. The image encoding / decoding method is, for example, MPEG4 (Moving Pictu).
re Experts Group 4) is used. Then, the image signal expanded by this decoding processing is supplied to the LCD 34 of the input / output unit 3 via the LCD control unit 25 and displayed.

The LCD 34 also displays still image data output from the main controller 21, telephone directory data, transmission / reception history data, various information indicating the operating state of the terminal itself, and the like. The information indicating the operating state of the own terminal includes, for example, information indicating reception quality and information indicating the remaining battery level.

On the other hand, the transmitted voice signal of the user output from the microphone 31 of the input / output unit 3 is the baseband unit 2
Is input to the audio signal processing module 23 of
After being voice-encoded by the R method, it is input to the demultiplexing unit 22. Also, the image signal output from the camera (CAM) 33 is the multimedia processing unit 2 of the baseband unit 2.
4 is input to the demultiplexing unit 22 and the image is encoded according to MPEG-4. Demultiplexer 2
2 is the encoded audio data and image data,
Control data generated by a data communication unit (not shown) is multiplexed according to ITUT H.223 and transmitted packet (MUX-PD
U) to create. The transmission packet created by the demultiplexing unit 22 is transmitted from the main control unit 21 to the transmission circuit (T
X) 15 is input.

The transmission circuit 15 comprises a modulator, a frequency converter and a transmission power amplifier. The transmission data is digitally modulated by a modulator and then mixed by a frequency converter with a transmission local oscillation signal generated from the frequency synthesizer 14 to be frequency-converted into a radio frequency signal. As a modulation method, a QPSK method and a spread spectrum method using a spread code are used. Then, the generated transmission radio frequency signal is amplified to a predetermined transmission level by the transmission power amplifier, and then supplied to the antenna 11 via the antenna duplexer 12 and transmitted from the antenna 11 to a base station (not shown). To be done.

The power supply unit 4 includes a battery 41 such as a lithium-ion battery, and a charging circuit 42 for charging the battery 41 based on the commercial power supply output (AC100V).
And a voltage generation circuit (PS) 43. The voltage generation circuit 43 is composed of, for example, a DC / DC converter, and based on the output voltage of the battery 41, a predetermined power supply voltage V
Generate cc.

The input / output unit 3 is also provided with an illuminator 36 for illuminating the LCD 34 and the key input unit 35 during operation and communication. The illuminator 36 is called, for example, a backlight or an illumination.

By the way, the main control section 21 is provided with an internal memory composed of a microprocessor, a ROM, a RAM and the like, in addition to a normal control function such as connection control of a radio channel and communication control after establishment of a communication link. As a control function according to the present invention, a display size comparison / determination function 21a
An enlargement display control function 21b and a reduction / scroll display control function 21c.

When the image data to be displayed is input, the display size comparison / determination function 21a first determines whether the type of image data is a still image or a moving image. If it is a moving image, the motion information in the image data, for example,
The motion vector defined by MPEG is monitored over a plurality of frames, and the display target range is specified based on the monitoring result.
On the other hand, in the case of a still image, or even in the case of a moving image, when the motion vector of a predetermined amount or more cannot be detected and the display target range cannot be specified, information indicating the image format included in the reception header information is also included. In addition, the display size of the input image data is recognized. Then, the display size of the input image data or the display size of the specified display target range is compared with the display area size of the display (LCD) 34 to determine the magnitude relationship.

When the display size comparison / determination means 21a determines that the display size of the input image data or the display size of the specified display target range is smaller than the display area size of the LCD 34, the enlarged display control function 21b. Then, find the ratio between the two. Then, based on the obtained ratio, the multimedia processing unit 24 is instructed to enlarge the input image data or the image data in the specified display target range, and the enlarged image data is displayed on the LCD 34. The LCD control unit 25 is instructed to display it.

The reduction / scroll display control function 21c is
When the display size comparison / determination unit 21a determines that the display size of the input image data or the display size of the specified display target range is larger than the display region size of the LCD 34, first, a reduced display is enabled. It is determined whether or not the user's setting has been made in advance. When the setting is made, the ratio between the display size of the input image data or the display size of the specified display target range and the display area size of the LCD 34 is calculated, and the calculated ratio is calculated. Based on the above, the LCD control unit 25 instructs the multimedia processing unit 24 to reduce the input image data or the image in the specified display target range and causes the LCD 34 to display the reduced image data. Instruct.

Next, an image data display operation by the mobile communication terminal configured as described above will be described. FIG. 3 is a flowchart showing the procedure and contents of image data display control by the main control unit 21.

In the standby state, the main control section 21 monitors the occurrence of outgoing call and incoming call in steps 3a and 3b, respectively. When an incoming call occurs, the image data received from the calling terminal after the communication link is established is received in step 3c, and the type of the received image data is determined in step 3d.

As a result of the type determination, if the input image data is a moving image, the process proceeds to step 3f,
Here, it is first determined whether the display target range can be specified. This determination is made based on whether or not the display mode specifying the display target range is designated by the user in advance and whether or not a motion vector having a predetermined value or more necessary for specifying the display target region can be detected from the moving image data. .

Then, if the display mode specifying the display target range is specified by the user and the motion vector can be detected, the main control section 21 proceeds to step 3g for the input image data. The motion vector is monitored over a plurality of predetermined frames, and the display target range is specified based on the monitoring result. For example, as shown in FIG. 9, when the image data is composed of a moving human image and its background image, the central area including the human image in which a certain amount of motion or more is detected is the display target. The area 9b is specified and the peripheral portion 9b is cut.

Then, when the display target area 9a in the image data is specified, the main control section 21 reads the information indicating the display area size of the LCD 34 of the terminal from the memory in the main control section 21 in step 3h, The read display area size is compared with the display size of the specified display target area 9a in step 3i to determine the magnitude relationship.

On the other hand, if the input image data is a still image, or even if it is a moving image, the display mode that specifies the display target range is not specified, or even if it is specified, the motion exceeds a predetermined amount. It is assumed that the vector cannot be detected. In this case, the main control unit 21 proceeds from step 3d to step 3e and recognizes the display size of the input image data based on the information indicating the image format included in the reception header. Then, the recognized display size of the image data and the display area size of the LCD 34 read from the internal memory of the main control unit 21 are compared in step 3i to determine the magnitude relationship.

As a result of the comparison of the display sizes, it is assumed that the display size of the input image data or the specified display range 9a is smaller than the display area size of the LCD 34. In this case, the main control unit 21 proceeds from step 3i to step 3k and executes enlarged display control here as follows. FIG. 4 is a flowchart showing the control procedure and control contents.

That is, first, in step 4a, the horizontal ratio of the image data to be displayed is calculated. Then, based on the calculated ratio, the multimedia processing unit 24 is instructed to enlarge the image data to be displayed in step 4b. At the same time, in step 4c, the LCD controller 25 is instructed to display the image data after the enlargement process.

Therefore, in the multimedia processing section 24, in accordance with the instruction of the enlargement processing, the image data to be displayed is enlarged so that the horizontal display size thereof corresponds to the horizontal display area size of the LCD 34. Processing is performed. Then, the enlarged image data is
It is displayed on the LCD 34 by the LCD control unit 25.

FIGS. 6A and 6B show an example of the display result. That is, as shown in FIG. 6A, the image data to be displayed is indicated by the chain double-dashed line 6a in the figure.
When the image data 6a is horizontally long as shown in FIG. 3, the image data 6a has a horizontal display size as shown by a broken line 6b in the figure.
The image is displayed on the LCD 34 after being enlarged to have a size equal to the horizontal display area size of 34. In addition, FIG.
As shown in (b), even if the image data to be displayed is vertically long as shown by the chain double-dashed line 6c in the figure, this image data 6c is displayed in the horizontal direction as shown by the broken line 6d in the figure. The image is enlarged until the size becomes equal to the horizontal display area size of the LCD 34 and then displayed on the LCD 34.

That is, even if the display size of the image data to be displayed is random, as in the case where the display target range is arbitrarily specified, the horizontal size of the image data is the horizontal direction of the LCD 34. It is enlarged and displayed until it becomes the same size as the display area size of. Therefore, in this case, as a display result, as shown in FIGS. 6A and 6B, a margin may occur in the display area of the LCD 34, or a part of the vertical end of the image data may not be displayed. However, at least in the horizontal direction of the image data, LC
It is displayed in an appropriate state corresponding to the size of D34.

On the other hand, the display size of the image data to be displayed is standardized according to a predetermined format like the input image data, and the LCD is
If the horizontal size of 34 is also standardized, the image data is enlarged and displayed according to a ratio predetermined by the standard.

FIGS. 10 (a) to 10 (c) show an example thereof, and FIG. 10 (a) shows the display size 10a of the image data consisting of SubQCIF (128 × 96 dots) and QCIF (176 × 144 dots).
In order to correspond to the display area size 10b corresponding to
The case where the enlargement processing is performed 11/8 times is shown. Also, (b) is a display size 10c of image data composed of QCIF.
Shows a case in which the display area size 10d corresponding to CIF (352 × 288 dots) is enlarged by a factor of 2, and further (c) shows the display size 10e of the image data composed of SubQCIF as CIF. Corresponding display area size 10
The case where the enlargement processing is performed 1/4 times to correspond to f is shown.

On the other hand, as a result of the comparison of the display sizes in step 3i, the display size of the input image data or the display size of the specified display target range 9a is LCD.
It is assumed that the size is larger than the display area size of 34. In this case, the main control unit 21 proceeds from step 3i to step 3m and executes the reduction / scroll display control here as follows. FIG. 5 is a flowchart showing the control procedure and control contents.

That is, the main control section 21 firstly executes step 5
In a, it is determined whether or not the reduced display mode of the image data is set. Then, when the reduced display mode is set, the process proceeds to step 5b, where the horizontal ratio of the image data to be displayed is calculated. Then, based on the calculated ratio, in step 5c, the multimedia processing unit 24 is instructed to reduce the image data to be displayed. At the same time, in step 5d, the LCD control unit 25 is instructed to display the image data after the reduction processing.

Therefore, in the multimedia processing section 24, according to the instruction of the above-described reduction processing, the image data to be displayed is reduced so that the horizontal display size becomes a size corresponding to the horizontal display area size of the LCD 34. Processing is performed. Then, the reduced image data is
It is displayed on the LCD 34 by the LCD control unit 25.

FIGS. 7A and 7B show an example of the display result. That is, as shown in FIG. 7A, the image data to be displayed is indicated by the chain double-dashed line 7a in the figure.
When the image data 7a is horizontally long as shown in FIG. 3, the image data 7a has a horizontal display size as shown by a broken line 7b in the figure.
After being reduced to the same size as the horizontal display area size of 34, it is displayed on the LCD 34. Also, FIG.
As shown in (b), even when the image data to be displayed is vertically long as shown by the chain double-dashed line 7c in the figure, this image data 7c is displayed in the horizontal direction as shown by the broken line 7d in the figure. After the size is reduced to the same size as the horizontal display area size of the LCD 34, it is displayed on the LCD 34.

That is, even if the image data to be displayed has a random display size as in the case of image data in which the display target range is arbitrarily specified, the horizontal size of the image data is the horizontal direction of the LCD 34. It is reduced and displayed until it becomes the same size as the display area size of. Therefore, in this case, as a display result, as shown in FIGS. 7A and 7B, a margin may occur in the display area of the LCD 34, or a part of the vertical end of the image data may not be displayed. However, at least in the horizontal direction of the image data, LC
It is displayed in an appropriate state corresponding to the size of D34.

On the other hand, the image data to be displayed has a display size standardized according to a predetermined format like the input image data, and the LCD
When the horizontal size of 34 is also standardized, the image data is reduced and displayed according to a ratio predetermined by the standard.

11 (a) to 11 (c) show an example thereof. In FIG. 11 (a), the display size 11a of image data consisting of QCIF (176 × 144 dots) is changed to SubQCIF (128 × 96 dots).
In order to correspond to the display area size 11b corresponding to
The case where the reduction processing is performed by 8/11 times is shown. Further, (b) shows a case where the display size 11c of the image data made up of CIF (352 × 288 dots) is enlarged to 1/2 times in order to correspond to the display area size 11d corresponding to QCIF. In c), the display size 11e of the image data composed of CIF is reduced to 4/11 times in order to correspond to the display area size 11f of the LCD 34 corresponding to SubQCIF.

On the other hand, if the result of determination in step 5a is that the reduced display mode has not been set,
The main control unit 21 proceeds to step 5e, where an instruction for cutting and displaying a part of the image data, for example, a portion corresponding to the display area size of the LCD 34 in the central portion, is displayed by the multimedia processing unit 24 and the LCD control. Give to part 25. Therefore, the cut-out display portion of the image data is displayed on the LCD 34 in the actual size.

Then, in this state, the main control section 21 monitors the scroll operation of the user in step 5f. Here, the user may select, for example, the multi-contact key 353 of the key input unit 35.
When the scrolling operation is performed by, the main control unit 21 gives an instruction to change the display portion of the image data according to the operation direction and the operation amount (time).
It is given to the CD control unit 25. Thus, the scroll display of the image data is performed. FIG. 8 schematically shows the school display operation of the image data 8a.

By performing this scroll display, the LCD
Even when the image data whose display size is larger than the display area size of 34 is displayed in full size without being reduced, it is possible to display all the parts that are not displayed as a list.

As a result of the comparison of the display sizes in step 3i, the display size of the input image data or the display size of the specified display target range 9a is LCD.
If the display area size is the same as the display area size 34, the main control unit 21 proceeds to step 3j, and the input image data or the image data of the specified display target range 9a is
The multimedia processing unit 24 and the LCD control unit 25 are instructed to display on the LCD 34 without enlarging or reducing. Therefore, the input image data or the image data of the specified display target range 9a is displayed on the LCD 34 in its original size.

As described above, in this embodiment, when the received image data is displayed on the LCD 34, the display size of the image data to be displayed is compared with the display area size of the LCD 34 to determine the size relation. To do. And
When the display size of the image data is smaller than the display area size of the LCD 34, the image processing unit 24 enlarges the image data according to the ratio and displays it on the LCD 34, while the display size of the image data is the display area of the LCD 34. If it is larger than the size, the multimedia processing unit 24 reduces the image data according to the ratio and displays it on the LCD 34.

Therefore, according to this embodiment, the display size of the received image data is the LC provided in the terminal.
Even if the image data size is different from the display area size of D34, the image data is always displayed in an appropriate size corresponding to the display area size of the LCD 34. Therefore, there is no fear that the display size of the image data is too small as compared with the display area of the LCD 34 to impair the visibility, and the display size of the image data is LC.
It is also possible to prevent a problem that the list cannot be displayed because it is too large as compared with the display area of D34. Therefore, the display area of the LCD 34 can be effectively used to perform optimum image display at all times.

Also, in this embodiment, when the image data to be displayed is a moving image, the motion vector is monitored over a plurality of frames to specify the display target range, and the specified display target range is displayed on the LCD 34. The multimedia processing unit 24 performs enlargement or reduction processing to display the area size. Therefore, for the moving image, only the originally required part in the image data can be displayed in an appropriate size corresponding to the display area size of the LCD 23.

Furthermore, a function for setting whether or not reduced display is possible is provided so that image data that cannot be reduced is displayed in full size. Therefore, for example, even when displaying image data whose content is difficult to discriminate when it is reduced, the image data can be displayed clearly.

In addition, since the scroll display control function is provided, even if a portion that is not displayed as a list is generated due to the image data being displayed in full size, all portions of the image data can be displayed without fail by the scroll operation. It will be possible.

The present invention is not limited to the above embodiment. For example, in the above embodiment, the case where the received data is displayed has been described as an example. However, the present invention is not limited to this, and the image data and I data captured from an external personal computer or digital camera via a cable or a wireless interface such as Bluetooth.
Similar display control may be executed for image data captured from a C memory card, flash memory, or the like via a PC slot, or image data captured by the camera 33 built in the terminal.

In the above embodiment, the horizontal size of the image data is enlarged or reduced so as to correspond to the horizontal size of the LCD 34. However, the vertical size of the image data is changed to the vertical size of the LCD 34. The enlargement or reduction processing may be performed so as to correspond to the size of.

FIGS. 12A and 12B show an example thereof. That is, as shown in FIG. 12A, when the image data to be displayed is horizontally long as shown by the chain double-dashed line 12a in the figure, the image data 12a is displayed as shown by the broken line 12b in the figure. The vertical display size is LCD3
The image is enlarged to the same size as the display area size 4 in the vertical direction, and then displayed on the LCD 34. In addition, FIG.
As shown in (b), even when the image data to be displayed is vertically long as shown by the chain double-dashed line 12c in the figure, this image data 12c is displayed vertically as shown by the broken line 12d in the figure. The image is enlarged until the size becomes equal to the vertical display area size of the LCD 34, and then displayed on the LCD 34.

Although not shown, if the display size of the image data is larger than the display area size of the LCD 34, the vertical display size of the image data is reduced until it becomes equal to the vertical display area size of the LCD 34. After being processed, it is displayed on the LCD 34.

In the above embodiment, the control function for displaying the received image data by enlarging / reducing and specifying the display target range based on the motion vector, and then enlarging / reducing the specified display target range. The control function to be displayed is automatically selected according to the type of image data, that is, whether the image is a still image or a moving image, and further according to whether or not a motion vector is detected. However, the present invention is not limited to this, and only one of the control functions may be executed according to the selection operation of the user. Further, it is not always necessary to have both of the above control functions, and it may be configured to have only one of the control functions.

Further, with respect to the configuration and functions of the mobile phone terminal, it is not necessary to have all of the configurations or functions described in the above-mentioned embodiment, and it is also possible to have only a part of them, and a wireless LAN interface, memory card slot, etc. Other configurations and functions may be provided. In addition to mobile phone terminals, PDAs (Pers
The present invention is also applicable to other mobile communication terminals such as onal Digital Assistants).

In addition, the configuration and functions of the mobile communication terminal, the communication system used, the image coding / decoding system, the image data display control procedure and its contents, the image data scaling system, the type and size of the display device, etc. Also, various modifications can be made without departing from the scope of the present invention.

[0071]

As described above in detail, in the first invention, the display size of the captured image data is compared with the display area size of the display unit, and as a result of this comparison, the display size of the captured image data is compared with the display size of the captured image data. When the display area size of the display is different, the captured image data is enlarged or reduced to a size corresponding to the display area size of the display and then displayed on the display.

In the second invention, the display target range in the image data is specified by detecting the motion state in the captured image data, and the display size of the specified display target range is displayed on the display. Compare with the display area size of. When the display size of the specified display target range and the display area size of the display unit are different as a result of this comparison, the specified display target range is enlarged to a size corresponding to the display area size of the display unit. Alternatively, it is displayed on the display after being reduced.

Further, in the third invention, a specifying means for specifying the display target range in the image data by detecting the state of motion in the image data taken in is provided, and the display size of the image data taken in is provided. And one of the display size of the display target range specified by the specifying means are selected and compared with the display area size of the display. Then, as a result of this comparison, when the display size of the captured image data or the specified display target range and the display area size of the display are different, the captured image data or the specified display target range Is enlarged or reduced to a size corresponding to the display area size of the display, and the image data after this processing is displayed on the display.

Therefore, according to these inventions, the image data can be always displayed in an optimum size in accordance with the display area size of the display unit, and thus the display area of the display unit can be effectively used to obtain the optimum display. It is possible to provide a mobile communication terminal capable of displaying various images.

[Brief description of drawings]

FIG. 1 is an external configuration diagram of a mobile phone terminal which is an embodiment of a mobile communication terminal according to the present invention.

FIG. 2 is a block diagram showing a circuit configuration of a mobile phone terminal which is an embodiment of a mobile communication terminal according to the present invention.

FIG. 3 is a flowchart showing a procedure and contents of image data display control by the mobile communication terminal shown in FIGS. 1 and 2.

FIG. 4 is a flowchart showing the procedure and contents of enlarged display control processing in the flowchart shown in FIG.

5 is a flowchart showing a procedure and contents of a reduction / scroll display control process in the flowchart shown in FIG.

6 is a diagram showing an example of the enlarged display control process shown in FIG.

FIG. 7 is a diagram showing an example of the reduced display control process shown in FIG.

8 is a diagram showing an example of the scroll display control process shown in FIG.

9 is a diagram showing an example of a process of specifying a display target range by the image data display control shown in FIG.

FIG. 10 is a diagram showing another example of enlarged display control processing.

FIG. 11 is a diagram showing another example of the reduced display control process.

FIG. 12 is a diagram showing another example of enlarged display control processing.

[Explanation of symbols]

1 ... Wireless section 2 ... Baseband section 3 ... I / O section 4 ... Power supply 11 ... Antenna 12 ... Antenna duplexer (DPX) 13 ... Receiving circuit (RX) 14 ... Frequency synthesizer (SYN) 15 ... Transmission circuit (TX) 21 ... Main control unit 21a ... Display size comparison judgment function 21b ... Enlarged display control function 21c ... Reduction / scroll display control function 22 ... Demultiplexer 23 ... Audio signal processing module 24 ... Multimedia processing unit 25 ... LCD control unit 26 ... Memory unit 31 ... Microphone 32 ... speaker 33 ... Camera 34 ... Liquid crystal display (LCD) 35 ... Key input section 36 ... Illuminator 41 ... Battery 42 ... Charging circuit (CHG) 43 ... Voltage generation circuit (PS)

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Claims (8)

[Claims] 1. A mobile communication terminal having a function of displaying image data captured from the outside on a display device, and a comparing means for comparing the display size of the captured image data with the display area size of the display device. When the display size of the captured image data and the display area size of the display are different as a result of the comparison by the comparison means, the captured image data is set to a size corresponding to the display area size of the display. A mobile communication terminal, comprising: a display control unit for performing enlargement or reduction processing and displaying the image data after the processing on the display. 2. The display control means determines whether or not the aspect ratios of the display size of the captured image data and the display area size of the display device match, and if they do not match, the captured image data is captured. 2. The image data is enlarged or reduced so that either the vertical or horizontal size of the image data corresponds to the vertical or horizontal size of the display. The mobile communication terminal described. 3. The display control means selects a part of the image data when the display size of the image data enlarged or reduced at the original size or at an arbitrary ratio exceeds the display area size of the display device. The mobile communication terminal according to claim 1, wherein the mobile communication terminal is displayed on the display. 4. The display control means monitors a scroll operation by a user while displaying a part of the image data enlarged or reduced at the original size or at an arbitrary ratio on a display device, and the scroll operation is performed. The mobile communication terminal according to claim 3, wherein a selected portion of the image data displayed on the display is changed according to the above. 5. A mobile communication terminal having a function of displaying image data captured from the outside on a display, detecting a motion state in the captured image data,
Specifying means for specifying the display target range based on the detection result, comparing means for comparing the display size of the display target range specified by the specifying means with the display area size of the display device, and comparison of the comparing means As a result, when the display size of the specified display target range and the display area size of the display unit are different, the specified display target range is enlarged or reduced to a size corresponding to the display area size of the display unit. A mobile communication terminal, comprising: display control means for processing and displaying the processed image data on the display. 6. A mobile communication terminal having a function of displaying image data captured from the outside on a display, detecting a motion state in the captured image data,
A specifying unit that specifies the display target range based on the detection result, and selects either one of the display size of the captured image data and the display size of the display target range specified by the specifying unit, Comparing means for comparing with the display area size of the display, and as a result of the comparison by the comparing means, the display size of the captured image data or the specified display target range and the display area size of the display are different from each other. In this case, a display for enlarging or reducing the captured image data or the specified display target range to a size corresponding to the display area size of the display, and displaying the processed image data on the display. A mobile communication terminal comprising: a control unit. 7. The comparing means determines whether the captured image data is a still image or a moving image, and when the captured image data is a still image, the display size of the captured image data is displayed by the display unit. 7. The movement according to claim 6, wherein the display size of the display target range specified by the specifying unit is compared with the display area size of the display device in the case of a moving image. Communication terminal. 8. The comparing means, when the captured image data is a moving image, determines whether or not it is possible to specify and display a display target range of the image data, and when it is determined to be possible. The display size of the display target range specified by the specifying means is compared with the display area size of the display device, and when it is determined that the display size of the captured image data is not displayed, The mobile communication terminal according to claim 7, which is compared with a display area size.