JP2002311917A - Portable terminal device, and image display method and program thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a portable terminal device which can suppress deterioration in picture quality when used at low temperature. SOLUTION: The display interval time(DIT) of a currently displayed image #N and the display response time(DRT) of a display part at the temperature in the periphery of a display part are compared with each other (step S5); when DIT<DRT, the DIT of a next image #(N+1) is added to the DIT (step S9) and when the addition DIT>=DRT, an image #(N+2) is displayed the addition DIT later (step S11 to step S2) while the image #(N+1) is skipped.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable terminal device, an image display method therefor, and a program therefor.

[0002]

2. Description of the Related Art In addition to a telephone (call) function, a portable terminal device has various functions such as mail and Web (Web) access. For this reason, the display of the portable terminal device has been enlarged and colored. It is known that an LCD (liquid crystal display) is employed in many of these displays. From now on, W-CDMA
(Broadband Code Division Multiple Access), GPRS (General
With a wireless data communication system called Packet Radio Service, etc., the communication speed of the portable terminal device has been increased, and moving image distribution has become possible.

[0003] However, since the portable terminal device is carried by its user, it is often used in an environment where it is exposed to the outside air. In a conventional mobile terminal device,
In the usage environment, especially when used at low temperatures, the interval at which moving image frames are displayed is designed for use at room temperature, and the display response speed of LCDs is extremely slow at low temperatures. However, there is a problem that the moving image is not displayed clearly on the LCD (the screen is blurred, the moving image appears to flow, etc.).

Japanese Patent Application Laid-Open Nos. 5-053152 and 8-304772 disclose various techniques for solving the above-mentioned problems in LCDs. The proportion of portable terminal devices equipped in the market is by no means large. The reason for this is that when such techniques are applied to LCDs, the cost increases.

[0005] Also, WAP (Wireless Application Pro)
When various moving images are downloaded to the mobile terminal by Web access represented by a tocol), the display capability (black / white / color, etc.) of the mobile terminal is notified to the server, and is optimal for the mobile terminal. Although there is a mechanism that can download various moving images, even in this case, the above problem is not solved. The reason is that the usage environment (temperature) is not taken into account in the notification of the mobile terminal device information to the server.

Further, in order to improve image quality deterioration due to poor LCD response at low temperatures, Japanese Patent Laid-Open No. 1-2348 is disclosed.
Japanese Patent Publication No. 96 (first publication) discloses that a field of a video signal is extracted once every predetermined number of times that changes as a function of the temperature in the vicinity of an LCD, and is taken out to an LCD whose temperature response deteriorates at low temperatures. A technique adapted to supply is described.

[0007]

However, in the first publication, it is assumed that data such as TV images are sequentially transmitted. On the other hand, in the portable terminal device, basically, the image data to be displayed is stored in its own device.
Therefore, the technology described in the first publication cannot be directly applied to a portable terminal device.

[0008] In a portable terminal device required to be miniaturized, the size of a memory for storing image data is limited. Therefore, in the portable terminal device, for example, 500 [ms], 2
The frame is 100 [ms], the third is 100 [ms],
In the fourth frame, there is a case where the memory used is reduced by storing the information of the display interval time in a memory such as 1 [s]. In other words, in this case, the moving image data to be stored in the memory only needs to be data for four frames.
Assuming that the display is updated at 0 [ms / 1 frame], 1
It is necessary to hold a total of 17 frames, that is, five frames, one second frame, one third frame, and ten fourth frames.

[0009] Consider the use of the technique described in the above-mentioned first gazette when playing back moving images on such a portable terminal device. FIG. 10 is a diagram for explaining the operation when the technology described in the first publication is applied to a portable terminal device. In FIG. 10, the moving image data constituting the moving image includes moving image data D1 (the display interval time is 500 [ms]), moving image data D2 (the display interval time is 100 [ms]), and the moving image data. Image data D3 (the display interval time is 100 [m
s]), moving image data D4 (the display interval time is 300 [ms]), and moving image data D5 (the display interval time is 1 [s]).

First, each moving image data is stored in a RAM (Rando
m Access Memory) on the time axis. FIG. 10 (a)
Is a view showing the expanded state (this operation is not described in the first publication). Next, a time interval for thinning out the moving image data is determined from a function of the temperature near the LCD. Here, the determined time interval is set to 300 [m
s]. Then, the image data for moving images arranged on the time axis at the determined time interval is thinned out and displayed on the LCD. FIG. 10B shows a display on the LCD. As shown in FIG. 10B, data is set on the LCD seven times. FIG. 10C shows an LCD.
FIG. 9 is a diagram showing a display on the LCD when the temperature in the vicinity is not considered.

Thus, in FIG. 10B, moving image data D1 (500 [m
s]) is not displayed immediately after the moving image data D2, and the technique disclosed in the first publication simply thins out at the time interval determined by the function of the temperature. The presence or absence of the display of the moving image data following the moving image data having a long display time changes depending on the time interval. If a frame immediately after a frame having a long display time is not displayed as shown in FIG. 10B, there is a problem that frame skipping appears remarkably.

It is an object of the present invention to provide a portable terminal device, an image display method thereof, and a program capable of suppressing deterioration of image quality when used at a low temperature.

[0013]

A portable terminal device according to the present invention is a portable terminal device including a display unit for displaying an image, based on a display response time of the display unit at a temperature near the display unit. And a control unit for controlling display of each moving image constituting the moving image on the display unit.

Further, the portable terminal device according to the present invention is a portable terminal device including a display unit for displaying an image, wherein a display response time of the display unit at a temperature near the display unit and each moving image constituting a moving image are provided. Control means for controlling display of each of the moving image images on the display unit based on a display interval time of the image for use.

In the portable terminal device, the control means includes a holding means for holding the temperature and the display response time in association with each other.

In the portable terminal device, the control means may include a comparing means for comparing the display response time with a display interval time of a moving image displayed on the display unit among the moving images. And the display is controlled according to the comparison output.

Further, in the portable terminal device, when the comparison output indicates that the display interval time of the displayed moving image is equal to or longer than the display response time, the control means displays the moving image. After a lapse of the display interval time of the moving image, a moving image to be displayed next among the moving image is displayed. Further, in the portable terminal device, when the comparison output indicates that the display response time is longer than a display interval time of the displayed moving image, the control unit may control the moving image to be displayed next. It is characterized in that the use images are thinned out. Further, in the portable terminal device, the control unit adds the display interval time of the thinned video image to be displayed next to the display interval time of the displayed video image,
The comparison means compares the added display interval time with the display response time.

Still further, in the above-mentioned portable terminal device,
The control means, until the comparison output indicates that the addition display interval time is equal to or longer than the display response time,
The moving picture images are sequentially decimated, and the display interval time of each of the decimated moving picture images is added to the added display interval time, which is used as the added display interval time. Further, in the portable terminal device, when the comparison output indicates that the addition display interval time is equal to or longer than the display response time, the control unit may display the displayed moving image image with the addition display interval time. It is characterized in that it is displayed until the time elapses. Further, in the portable terminal device, when the comparison output indicates that the addition display interval time is equal to or longer than the display response time, after the addition display interval time has elapsed, A moving image to be displayed next, other than the thinned moving image, is displayed.

An image display method according to the present invention is an image display method in a portable terminal device including a display unit for displaying an image, wherein a moving image is displayed based on a display response time of the display unit at a temperature near the display unit. A control step of controlling the display of each moving image for displaying on the display unit.

An image display method according to the present invention is an image display method in a portable terminal device including a display unit for displaying an image, wherein a display response time of the display unit at a temperature near the display unit and a moving image are displayed. The method further includes a control step of controlling display of the moving image on the display unit based on a display interval time of each moving image.

In the image display method, the control step includes a comparing step of comparing the display response time with a display interval time of a moving image displayed on the display unit among the moving image. The display is controlled according to the comparison result.

In the image display method, the control step includes displaying the moving image when the comparison result indicates that the display interval time of the displayed moving image is equal to or longer than the display response time. After a lapse of the display interval time of the moving image, a moving image to be displayed next among the moving image is displayed. In the image display method, the control step may include, when the comparison result indicates that the display response time is longer than a display interval time of the displayed moving image, the moving image to be displayed next. It is characterized in that the use images are thinned out. In the image display method, the control step may include adding a display interval time of the thinned video image to be displayed next to the display interval time of the displayed video image, and the comparing step includes: It is characterized in that the added display interval time is compared with the display response time.

Further, in the image display method, the control step may be performed until the comparison result indicates that the added display interval time is equal to or longer than the display response time.
The moving picture images are sequentially decimated, and the display interval time of each of the decimated moving picture images is added to the added display interval time, which is used as the added display interval time. In the image display method, the control step may include, when the comparison result indicates that the addition display interval time is equal to or longer than the display response time, changing the displayed moving image to the addition display interval time. It is characterized in that it is displayed until the time elapses. In the image display method, when the comparison result indicates that the added display interval time is equal to or longer than the display response time, after the lapse of the added display interval time, the control step includes: A moving image to be displayed next, other than the thinned moving image, is displayed.

[0024] A program according to the present invention is a program for causing a computer to execute an image display method in a portable terminal device including a display unit for displaying an image, the display response of the display unit at a temperature near the display unit. The method further includes a control step of controlling display of each moving image constituting the moving image on the display unit based on time.

[0025] A program according to the present invention is a program for causing a computer to execute an image display method in a portable terminal device including a display unit for displaying an image, wherein the computer executes the image display method at a temperature near the display unit. The method further includes a control step of controlling display of the moving image on the display unit based on the display response time and the display interval time of each moving image constituting the moving image.

In the above program, the control step includes a comparing step of comparing the display response time with a display interval time of a moving image displayed on the display unit among the moving image. The display is controlled according to a comparison result.

The operation of the present invention is as follows. Based on the display response time of the display unit at the temperature around the display unit displaying the image and the display interval time of each video image constituting the video, the control unit displays each video image on the display unit. Control. More specifically, the comparison unit compares the display response time at the temperature around the display unit with the display interval time of the currently displayed moving image, and determines that the comparison output is “display interval time ≧ display time. When "response time" is indicated, the control means displays the next moving image to be displayed after the elapse of the display interval time. When the comparison output of the comparison means indicates “display interval time <display response time”, the control means thins out the moving image to be displayed next and displays the display interval of the thinned moving image. Is added to the display interval time of the current moving image. The comparing means compares the added display interval time with the display response time.

Further, the control means sequentially thins out the moving picture images and adds the display interval time of each thinned moving picture image until the comparison output of the comparing means indicates “addition display interval time ≧ display response time”. When the comparison output of the comparing means indicates "addition display interval time≥display response time", the displayed moving image is added and displayed. Display until the interval time elapses. Then, after the addition display interval time has elapsed, the control means displays a moving image to be displayed next to the displayed moving image other than the thinned moving image.

[0029]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a wireless portable terminal device according to an embodiment of the present invention. In FIG. 1, a wireless portable terminal device according to an embodiment of the present invention includes an antenna 1, a wireless unit 2, a data conversion unit 3, an audio processing unit 4, a receiver 5, a microphone 6, a control unit 7, L
A display unit 8 which is a CD (liquid crystal display) and a memory 9
And a temperature detecting unit 10 that is disposed near the display unit 8 and detects a temperature (air temperature), a key operation unit 11, and a timer unit 12.

FIGS. 2A and 2B are diagrams showing an example of a moving image displayed by the wireless portable terminal device of FIG. 1, wherein FIG. 2A is a diagram for explaining a moving image constituting the moving image, and FIG. It is a figure showing an example of. 2A, the image body data 20 is stored in the memory 9, and includes an image number 21 indicating a display order, a display interval time (DIT) 22 indicating a time interval for displaying images, and Moving image data (such as a bitmap) 23. The moving image data 23 is displayed as an image on the display unit 8 during the DIT 22.

FIG. 2B shows an example of a moving image composed of six images. The display interval time 22-of moving image data 23-1 (image # 1) constituting the image main data 20-1 is shown. 1 (DIT (1)) is 200 [m
s], and the display interval time 22-2 (DIT (2)) of the moving image data 23-2 (image # 2) constituting the image body data 20-2 is 100 [ms].
Moving image data 2 constituting image body data 20-3
Display interval time of 3-3 (image # 3) 22-3
(DIT (3)) is 100 [ms], and the display interval time 22-4 (DIT) of the moving image data 23-4 (image # 4) constituting the image main data 20-4
(4)) is 100 [ms], and the image body data 20
Moving Image Data 23-5 (Image # 5) Constituting -5
Display interval time 22-5 (DIT (5)) is 1
00 [ms], and the display interval time 22-6 (DIT (6)) of the moving image data 23-6 (image # 6) constituting the image main data 20-6 is 400 [ms].
Which is a moving image for one second in total. FIG. 5 shows the moving image data 23-1 to 23-6 on the time axis.
This is shown in FIG. FIG. 5 is a diagram showing a display of an image on the display unit in FIG. 1, and FIG. 5 (a) is a diagram showing a display when the temperature is not considered.

FIG. 3 is a diagram showing a relation table between the temperature and the display response time. In FIG. 3, a relation table (relation data) 30 includes a temperature (air temperature) and FIG.
Is associated with the display response time (display response speed) of the display unit 8 of the wireless portable terminal device, and is stored in the memory 9 in advance. That is, when the temperature T is “-20 ° C. <
T ≦ −10 ° C. ”, the display response time of the display unit 8 is 30
0 [ms] and the display response time is 150 [ms] when the temperature T is “−10 ° C. <T ≦ 0 ° C.” Response time is 100
[Ms] and the temperature T is “10 ° C. <T ≦ 40 ° C.”, the display response time is 75 [ms], and the temperature T is “4”.
When 0 ° C <T ≦ 85 ° C ”, the display response time is 50 [m
s]. Note that these specific correspondences are merely examples, and are determined by the type / size / drive voltage of the display unit 8 and differ for each model of the portable terminal device.

Next, an example of the operation of the wireless portable terminal device shown in FIG. 1 will be described with reference to the drawings. FIG. 4 is a flowchart for explaining an example of the operation of the wireless portable terminal device of FIG.

In FIG. 1 to FIG. 4, when displaying a moving image stored in advance, the control unit 7 first displays the moving image data 23-1 whose image number 21-1 is “N = 1” and the DIT.
(1) is read from the memory 9 and its image data 23-
1 is output to the display unit 8 to display the image # 1 on the display unit 8, and DIT (1) is set in the timer unit 12. The timer unit 12 counts DIT (1) (Step S1, Step S2).

Next, the control section 7 reads out the temperature information near the display section 8 detected by the temperature detection section 10 and displays the display response time (DRT) corresponding to the value in the relation table stored in the memory 9. 30 (step S3).

First, the case where the temperature is normal temperature (20 ° C.) will be described. The control unit 7 obtains the DRT from the relation table 30.
(1) is calculated as 75 [ms], and this value is set in the timer unit 12 (step S3). Then, it is confirmed whether or not there is an image to be displayed next (step S4). Here, if there is no next image, this flow ends (step S15). In this case, since there is a next image (the next image is image # 2), DIT (1) and DRT
The value of (1) is compared (step S5).

The DIT (1) of the image # 1 is 200 [m
s] and DRT (1) are 75 [ms], and DIT
Since (1) ≧ DRT (1), the process proceeds to step S6,
It waits for the timer unit 12 to count up DIT (1). When counting up, the control unit 7 reads out the image data 23-2 and DIT (2) to be the next image, displays the image # 2 on the display unit 8, and sets DIT (2) = 100.
[Ms] is set in the timer section 12. Timer part 1
2 counts DIT (2) (step S7, step S2). Thereafter, the above-described operation is repeated and FIG.
As a result, all the images (image # 1 to image # 6) are displayed on the display unit 8. FIG. 5B is a diagram showing a display when the temperature is 20 ° C.

Next, the case where the temperature is low (-5 ° C.) will be described. The control unit 7 obtains the DRT from the relation table 30.
(1) is calculated as 150 [ms], and this value is set in the timer unit 12 (step S3). Since there is a next image (the next image is image # 2), DIT (1)
= 200 [ms] and DRT (1) = 150 [ms] are compared (step S4, step S5).

Since DIT (1) ≧ DRT (1), the flow advances to step S6 to wait for the timer section 12 to count up DIT (1). Upon counting up, the control unit 7 sets the image data 23-2 and DIT to be the next image.
(2) is read out and the image # 2 is displayed on the display unit 8;
IT (2) = 100 [ms] is set in the timer unit 12. The timer unit 12 counts DIT (2) (Step S7, Step S2).

Then, the controller 7 returns to the temperature detector 10
Reads the detected temperature information, and sets the DRT (2) corresponding to the temperature (supposed to be -5 ° C.) from
The value is calculated as 50 [ms], and this value is set in the timer unit 12 (step S3). Since there is a next image (the next image is image # 3), DIT (2) = 100
[Ms] and DRT (2) = 150 [ms] are compared (step S4, step S5).

Since DIT (2) <DRT (2), the process proceeds to step S8, where the control unit 7 sets DIT (3) = 100 [m] of the image data 23-3 to be the next image after DIT (2).
s] is added to calculate a new DIT (addition DIT) (step S9). That is, in step S9, the new DIT is DIT (3) + DIT (2) = 10
0 + 100 = 200 [ms], and this new D
Let IT be DIT (3).

Next, the control unit 7 sends a new DIT, D
Compare IT (3) with DRT (2) (Step S1)
0). Since DIT (3) ≧ DRT (2), the control unit 7 replaces the timer value of the timer unit 12 from DIT (2) to DIT (3).
(3) is counted (step S11).

The control unit 7 waits until the timer unit 12 counts up DIT (3) (step S6), and when it counts up, the control unit 7 does not read out the image data 23-3 that should have been the next image. That is, image # 3
, And image data 23-4 to be the next image and DI
T (4) is read and image # 4 is displayed on the display unit 8,
DIT (4) = 100 [ms] is set in the timer unit 12. The timer unit 12 counts DIT (4) (Step S7, Step S2).

As described above, the image # 2 has its DIT
D which is an addition DIT instead of being displayed during (2)
It is displayed during IT (3), after which the image # 3 is skipped and the image # 4 is displayed. Thereafter, the above operation is repeated, and as shown in FIG.
Only the image # 1, the image # 2, the image # 4, and the image # 6 are displayed on the display unit 8, and the images # 3 and # 5 are thinned out.
FIG. 5C is a diagram showing a display when the temperature is −5 ° C.

Next, the case where the temperature is extremely low (-15 ° C.) will be described. The control unit 7 obtains the DRT from the relation table 30.
(1) is calculated as 300 [ms], and this value is set in the timer unit 12 (step S3). Since there is a next image (the next image is image # 2), DIT (1)
= 200 [ms] and DRT (1) = 300 [ms] are compared (step S4, step S5).

Since DIT (1) <DRT (1), the process proceeds to step S8, where the control unit 7 sets DIT (2) = 100 [m] of the image data 23-2 to be the next image after DIT (1).
s] is added to calculate a new DIT (step S9). That is, in step S9, a new DI
T is DIT (2) + DIT (1) = 100 + 200 = 3
00 [ms], and this new DIT is
(2).

Next, the control unit 7 transmits a new DIT D
Compare IT (2) with DRT (1) (Step S1)
0). Since DIT (2) = DRT (1), the control unit 7 replaces the timer value of the timer unit 12 from DIT (1) to DIT (2).
(2) is counted (step S11).

The control unit 7 waits until the timer unit 12 counts up DIT (2) (step S6), and when it counts up, the control unit 7 does not read out the image data 23-2 that should have been the next image. That is, image # 2
And the image data 23-3 and DI
T (3) is read and image # 3 is displayed on the display unit 8,
DIT (3) = 100 [ms] is set in the timer unit 12. The timer unit 12 counts DIT (3) (Step S7, Step S2).

Then, the control section 7 returns to the temperature detecting section 10 again.
Reads out the detected temperature information, calculates DRT (3) corresponding to the temperature (assumed to be −15 ° C.) from the relation table 30 as 300 [ms], and sets this value in the timer unit 12 (step S3). ). Since there is a next image (the next image is image # 4), DIT (3) = 100
[Ms] is compared with DRT (3) = 300 [ms] (step S4, step S5).

Since DIT (3) <DRT (3), the process proceeds to step S8, where the control unit 7 sets DIT (4) = 100 [m] of the image data 23-4 to be the next image after DIT (3).
s] is added to calculate a new DIT (step S9). That is, in step S9, a new DI
T is DIT (4) + DIT (3) = 100 + 100 = 2
00 [ms], and this new DIT is
(4).

Next, the control unit 7 sends a new DIT, D
Compare IT (4) with DRT (3) (Step S1)
0). Since DIT (4) <DRT (3),
Proceeding to step S12, the presence or absence of the next image is confirmed. Since there is a next image (here, the next image is image # 5), the process proceeds to step S13, where the control unit 7 sets DIT (4) to DIT (5) = 100 [of image data 23-5 to be the next image. m
s] is added to calculate a new DIT (step S9). That is, in step S9, the new DIT is DIT (5) + DIT (4) = 100 + 20
0 = 300 [ms], and this new DIT is
IT (5).

Then, the control section 7 compares the new DIT DIT (5) with the DRT (3) (Step S).
10). Since DIT (5) = DRT (3), the control unit 7 replaces the timer value of the timer unit 12 with DIT (3) from DIT (5).
(5) is counted (step S11).

The control unit 7 waits until the timer unit 12 counts up DIT (5) (step S6), and when it counts up, the control unit 7 deletes the image data 23-4 and 23-5 that should have been the next image. Without reading, that is, by thinning out the images # 4 and # 5, the image data 23-6 and DIT (6) to be the next image are read, and the image # 6 is displayed on the display unit 8, and DIT (6) = 400 [Ms] is set in the timer section 12. Timer unit 12 is DIT
(6) is counted (step S7, step S
2). After step S3, the process proceeds to step S4 to check for the presence or absence of the next image. Since there is no next image, the flow exits from this flow (step S15).

By the above operation, as shown in FIG. 5D, only image # 1, image # 3, and image # 6 are displayed on the display unit 8, and image # 2, image # 4, and image # 5 are displayed. It will be thinned out. FIG. 5D is a diagram showing a display when the temperature is −15 ° C.

When the moving image data D1 to D5 used in the description of FIG. 10 are displayed on the display unit 8 in accordance with the flow processing shown in FIG. 4, they are displayed as shown in FIG. 6 ( The display response time is 300 [ms]). FIG. 6 is a view of FIG.
FIG. 9 is a diagram showing a display in the operation example of FIG. In FIG. 6, FIG.
Unlike (b), the moving image data D2 immediately after the moving image data D1 (500 [ms]) having a long display interval time is displayed. That is, in the wireless portable terminal device according to the present embodiment, the moving image data immediately after the moving image data having a long display interval such that display interval time ≧ display response time is reliably displayed on the display unit 8. Will be.

When FIG. 6 is compared with FIG. 10B, FIG. 6C showing the original display is close to FIG. 6, ie, the display on the wireless portable terminal device according to the present embodiment. It turns out that it is. Further, in FIG. 6, the number of times of setting the data on the display unit 8 is only three times.
In (b), data is set on the LCD seven times. As described above, in the wireless portable terminal device according to the present embodiment, the number of times of setting data to the LCD can be reduced as compared with the technique described in the first publication, so that power consumption can be reduced, and It can be said that it is suitable for a portable terminal device that cares about the life.

Next, another example of the operation of the wireless portable terminal device shown in FIG. 1 will be described with reference to the drawings. FIG. 7 shows FIG.
5 is a flowchart for explaining another example of the operation of the wireless portable terminal device, and the same parts as those in FIG. 4 are denoted by the same reference numerals. 7 differs from the operation example shown in FIG. 4 in that the control unit 7 performs the operation of reading out the temperature information of the temperature detection unit 10 and calculating the DRT only once at the beginning of the moving image reproduction. It is.

That is, when playing back a moving image, the control unit 7 first reads out temperature information near the display unit 8 detected by the temperature detection unit 10 and stores the DRT corresponding to the value in the memory 9. It is calculated from the existing relation table 30 (step A10). Then, since the process proceeds to step 1 and subsequent steps, if the DRT is calculated first, the DRT calculation operation is not performed until this flow ends. As a result, although the real-time property is inferior to the operation example shown in FIG. 4, the control can be simplified.

Next, still another example of the operation of the wireless portable terminal device shown in FIG. 1 will be described with reference to the drawings. FIG. 8 is a flowchart for explaining still another example of the operation of the wireless portable terminal device of FIG. 1, and the same parts as those of FIG. 4 are denoted by the same reference numerals. 8 differs from the operation example shown in FIG. 4 in that a moving image is displayed after comparing DIT with DRT.

That is, the control unit 7 checks the next image (step A20).
After D3, DIT (N) and DRT (N) of image #N to be displayed in step A30 are compared (step S5). If DIT (N) ≧ DRT (N),
The control unit 7 reads out the image data 23 -N, causes the display unit 8 to display the image #N, and causes the timer unit 12 to execute DIT.
(N) is set, and the timer unit 12 counts up DIT (N) (step A30).

In step S5, DIT (N) <DRT
If (N), the process proceeds to step S8, where the control unit 7 sets the DI of the image #M to be displayed in step S11.
T (M) is added to DIT (M-1) to obtain a new DIT.
(M) is compared with DRT (N) (steps S9 and S10). When DIT (M) ≧ DRT (N), the control unit 7 reads out the image data 23-M, causes the display unit 8 to display the image #M, and causes the timer unit 12 to display D # (M).
IT (M) is set, and timer unit 12 sets DIT (M)
Is counted up (step S11).

As described above, in the description of each operation example of the wireless portable terminal device according to the embodiment of the present invention, the DIT 22 is included in the image body data 20 of FIG. 2A, but this information is included. Each of the above operation examples can be applied even when the operation is not performed. That is, by treating the display interval time as a predetermined constant value, or treating the time interval required for downloading each moving image downloaded via a wireless line as the display interval time, It can be applied.

FIG. 9 is a diagram for explaining a case where the downloaded image data is reproduced in an environment at a temperature of -15 ° C. FIG. 9A is a diagram showing each download data.
(B) is a diagram showing a DIT of each download data, and (c) is a diagram showing a display thereof on the display unit 8.

In FIG. 9A, each image data of the images B to J shown on the time axis is sent to the wireless portable terminal device according to the embodiment of the present invention via the wireless line. Control unit 7
Measures the download start time and download end time of each image data, and sets the time interval as a display interval time. FIG. 9B shows the DIT value of each image data. In this example, each DIT has a value of 100 [m].
s].

By the flow processing shown in FIG.
As shown in (c), of the images B to J, only the image B, the image E, and the image H are sequentially displayed on the display unit 8, and the remaining images are skipped.

As described above, in the wireless portable terminal device according to the embodiment of the present invention, when the display response time is longer (slower) than the display interval time, the frame is skipped. Even when a moving image is played back, a beautiful moving image can be reproduced.

Further, in the wireless portable terminal device according to the embodiment of the present invention, since the display section of the portable terminal is not devised in order to realize beautiful moving picture reproduction, the display section 8 (LCD ), A general-purpose type (STN or the like) can be used, and therefore, a beautiful moving image can be reproduced at a low temperature without increasing the cost.

Further, in the wireless portable terminal device according to the embodiment of the present invention, since the number of moving image frames is controlled on the device side, the moving image can be downloaded / accessed through Web access or the like.
When reproducing, a moving image suitable for the usage environment can be reproduced without increasing the load on the server.

The processing operation according to the flowcharts shown in FIGS. 4, 7 and 8 is performed by causing a computer serving as a CPU (control unit) to read a program stored in a storage medium such as a ROM in advance. Of course, it is possible to realize by executing while.

[0070]

A first effect of the present invention is that a beautiful moving image can be reproduced even when the moving image is reproduced by using the portable terminal device at a low temperature. The reason is that if the display response time of the display unit at the ambient temperature of the display unit when the mobile terminal device is used is longer (slower) than the display interval time which is the frame interval of the moving image, the frame is skipped. Because he did.

A second effect of the present invention is that a beautiful moving image can be reproduced at a low temperature without increasing the cost. The reason is that the display section of the portable terminal is not devised in order to realize the reproduction of a beautiful moving image, so that a general-purpose type display section can be used.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a wireless portable terminal device according to an embodiment of the present invention.

FIGS. 2A and 2B are diagrams illustrating an example of a moving image displayed by the wireless portable terminal device in FIG. 1, in which FIG. 2A is a diagram for explaining moving image images included in the moving image, and FIG. FIG.

FIG. 3 is a diagram showing a relation table between a temperature and a display response time.

FIG. 4 is a flowchart illustrating an example of an operation of the wireless portable terminal device in FIG. 1;

5A and 5B are diagrams showing a display of an image on the display unit of FIG. 1, wherein FIG. 5A is a diagram showing a display when the temperature is not taken into consideration, and FIG. 5B is a diagram showing a display when the temperature is 20 ° C. It is a figure, (c) is a figure showing a display when a temperature is -5 ° C, and (d) is a figure showing a display when a temperature is -15 ° C.

6 is a diagram showing a display of each moving image image data of FIG. 10 in the operation example of FIG. 4;

FIG. 7 is a flowchart illustrating another example of the operation of the wireless portable terminal device in FIG. 1;

FIG. 8 is a flowchart for explaining still another example of the operation of the wireless portable terminal device of FIG. 1;

FIG. 9 is a diagram for explaining a case where downloaded image data is reproduced in an environment of a temperature of −15 ° C., and FIG.
FIG. 7 is a diagram showing each download data, FIG. 7B is a diagram showing a DIT of each download data, and FIG. 7C is a diagram showing a display on the display unit 8 of them.

10A and 10B are diagrams for explaining an operation when the conventional technique is applied to a portable terminal device, and FIG. 10A is a diagram illustrating a state where each moving image data is expanded in a RAM;
(B) LCD of moving picture image data according to the prior art
FIG. 8C is a diagram showing a display on the LCD, and FIG. 7C is a diagram showing a display on the LCD when the temperature near the LCD is not considered.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Antenna 2 Radio | wireless part 3 Data conversion part 4 Audio processing part 5 Receiver 6 Microphone 7 Control part 8 Display part 9 Memory 10 Temperature detection part 11 Key operation part 12 Timer part 20,20-1-20-20 Image main body data 21, 21-1 to 21-6 Image number 22, 22-1 to 22-6 DIT 23, 23-1 to 23-6 Image data 30 Relation table

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04M 1/00 H04M 1/00 J F term (Reference) 2H093 NC27 NC28 NC50 NC57 ND02 ND39 ND47 ND54 NF13 5C006 AF47 AF62 BC16 BF38 FA19 5C080 AA10 DD01 EE19 JJ02 JJ07 KK07 5K027 AA11 FF00 FF22

Claims (26)

[Claims] 1. A portable terminal device including a display unit for displaying an image, wherein the display of each moving image constituting a moving image is performed based on a display response time of the display unit at a temperature near the display unit. A portable terminal device comprising a control unit for controlling display on a unit. 2. A portable terminal device including a display unit for displaying an image, wherein a display response time of the display unit at a temperature near the display unit and a display interval time of each moving image forming a moving image are determined. And a control unit for controlling the display of the moving image on the display unit. 3. The portable terminal device according to claim 1, wherein the control unit includes a holding unit that holds the temperature and the display response time in association with each other. 4. The control unit includes a comparison unit that compares the display response time with a display interval time of a moving image displayed on the display unit among the moving image, and a comparison output thereof. The portable terminal device according to any one of claims 1 to 3, wherein the display is controlled according to the following. 5. The comparing means sets the display interval time of a moving image to be displayed on the display unit among the moving image images instead of the display interval time of the displayed moving image. The portable terminal device according to claim 4, wherein the portable terminal device is compared with a display response time. 6. The display interval of the displayed moving image when the comparison output indicates that the display interval time of the displayed moving image is equal to or longer than the display response time. The mobile terminal device according to claim 4, wherein after a lapse of time, a moving image to be displayed next among the moving image is displayed. 7. The control means, when the comparison output indicates that the display response time is longer than a display interval time of the displayed moving image, displays the moving image to be displayed next. 7. The portable terminal device according to claim 6, wherein the portable terminal device is thinned out. 8. The control unit adds a thinned display interval time of the next moving image to be displayed to the displayed moving image image, and
8. The portable terminal device according to claim 7, wherein the comparing means compares the added display interval time with the display response time. 9. The control unit according to claim 1, further comprising: decimating the moving image and sequentially decimating the moving image until the comparison output indicates that the added display interval time is equal to or longer than the display response time. 9. The portable terminal device according to claim 8, wherein a display interval time is added to the addition display interval time, and the sum is set as the addition display interval time. 10. The control means, when the comparison output indicates that the addition display interval time is equal to or longer than the display response time, until the addition display interval time elapses. The portable terminal device according to claim 9, wherein the portable terminal device is displayed. 11. When the comparison output indicates that the addition display interval time is equal to or longer than the display response time, the control means removes the thinning out of the moving image images after the addition display interval time elapses. 11. The mobile terminal device according to claim 10, wherein a moving image to be displayed next is displayed other than the moving image. 12. The image for each moving image is an image acquired via a communication line, and the display interval time of each image for a moving image is a time required for acquiring the image for a moving image. The mobile terminal device according to claim 4. 13. A method for displaying an image in a portable terminal device including a display unit for displaying an image, wherein each of the moving images constituting a moving image is formed based on a display response time of the display unit at a temperature near the display unit. An image display method, comprising a control step of controlling display of an image on the display unit. 14. An image display method in a portable terminal device including a display unit for displaying an image, wherein a display response time of the display unit at a temperature near the display unit and a display of each moving image constituting a moving image. An image display method, comprising a control step of controlling display of each of the moving image images on the display unit based on an interval time. 15. The control step includes a comparing step of comparing the display response time with a display interval time of a moving image displayed on the display unit among the moving image, and a comparison result thereof. The image display method according to claim 13, wherein the display is controlled according to the following. 16. The method according to claim 1, wherein, in the comparing step, the display interval time of the moving image to be displayed on the display unit of the moving image is replaced with the display interval time of the displayed moving image. 16. The image display method according to claim 15, wherein a comparison is made with a display response time. 17. The display step of displaying the displayed moving image when the comparison result indicates that the display interval time of the displayed moving image is equal to or longer than the display response time. 16. The image display method according to claim 15, wherein after a lapse of time, a moving image to be displayed next among the moving image is displayed. 18. The control step, when the comparison result indicates that the display response time is longer than a display interval time of the displayed moving image, the moving image to be displayed next is displayed. 18. The image display method according to claim 17, wherein the image is thinned out. 19. The control step includes adding a display interval time of the thinned moving image to be displayed next to a display interval time of the displayed moving image, and the comparing step includes adding and displaying the moving image. 19. The image display method according to claim 18, wherein an interval time is compared with the display response time. 20. The method according to claim 19, wherein the moving image is decimated and sequentially decimated until the comparison result indicates that the added display interval time is equal to or longer than the display response time. 20. The image display method according to claim 19, wherein a display interval time is added to said additional display interval time, and this is set as said additional display interval time. 21. The control step, when the comparison result indicates that the addition display interval time is equal to or longer than the display response time, the display of the displayed moving image image until the addition display interval time elapses. 21. The image display method according to claim 20, wherein the image is displayed. 22. The control step, when the comparison result indicates that the addition display interval time is equal to or longer than the display response time, after the addition display interval time elapses, the thinning out of the moving image images. 22. The image display method according to claim 21, wherein a moving image to be displayed next is displayed other than the moving image. 23. A program for causing a computer to execute an image display method in a portable terminal device including a display unit for displaying an image, the program being based on a display response time of the display unit at a temperature near the display unit. And a control step of controlling display of each moving image constituting the moving image on the display unit. 24. A program for causing a computer to execute an image display method in a portable terminal device including a display unit for displaying an image, the display response time of the display unit at a temperature near the display unit and a moving image being displayed. A program comprising a control step of controlling display of each moving image on the display unit based on a display interval time of each moving image for constituting. 25. The control step includes a comparing step of comparing the display response time with a display interval time of a moving image displayed on the display unit among the moving image, and a comparison result thereof. 25. The program according to claim 23, wherein the display is controlled in accordance with the following. 26. The comparing step, wherein, instead of the display interval time of the displayed moving image, the display interval time of the moving image to be displayed on the display unit of the moving image is set to the display interval time of the moving image. 26. The program according to claim 25, wherein the program is compared with a display response time.