JP4794037B2 - Terminal device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a display control apparatus that causes a display device to display an image having a size larger than the displayable size of a display device with screen scrolling according to a user instruction in a wireless communication terminal or the like.
[0002]
[Prior art]
When the size of the image to be displayed is larger than the displayable size of the display device, it is common to display a part of the image to be displayed on the display device and perform screen scrolling according to a user instruction. Has been done.
[0003]
In particular, in the case of a wireless communication terminal such as a wireless communication terminal, since the mounted display device is small, there are frequent opportunities for screen scrolling. Furthermore, with wireless communication terminals, the size of images to be displayed has been increasing in recent years due to the increase in the number of characters of e-mail that can be sent and received and the possibility of accessing Internet sites. However, the number of screen scrolls will increase.
[0004]
As screen scrolling methods, there are known one-line scrolling, multi-line scrolling, page scrolling, jump scrolling, etc., and any one of these scrolling methods is adopted.
[0005]
The above scroll methods have different scroll amounts for one scroll instruction. These scrolling methods allow the user to freely change the screen state as the amount of scrolling at one time is small, so that the display can be easily viewed. I will have to. On the other hand, as the amount of one scroll is larger, a larger amount of scrolling can be performed easily, but detailed screen state adjustment cannot be performed and it is difficult to see.
[0006]
Therefore, a plurality of scroll modes are installed, and a plurality of scroll modes are switched according to the mode selection by the user. In this case, the scroll keys for each scroll mode must be used properly. The user must perform a single scroll key using different operation methods, such as long press / short press, or key operation for switching the scroll mode. ing.
[0007]
Furthermore, a method has been used in which the low-speed scroll mode is set as the standard mode, and when the scroll in the standard mode is continuously performed for a predetermined time, the mode is automatically shifted to the high-speed scroll mode. Since low-speed screen scrolling continues until a certain time elapses, it takes time until the desired image area is displayed, and the user is performing a single operation. Nevertheless, the scrolling speed changes, so the feeling of operation is poor.
[0008]
[Problems to be solved by the invention]
As described above, conventionally, when only a single scroll mode is installed, an appropriate screen scroll desired by the user cannot be performed, and a plurality of scroll modes can be selectively used. In this case, there is a problem that it is not easy to use because an operation for selecting the scroll mode is necessary.
[0009]
The present invention has been made in view of such circumstances, and an object of the present invention is to allow a plurality of scroll modes to be arbitrarily selected and used by a simple and intuitive operation. And is there.
[0010]
When the terminal device according to the first aspect of the present invention is displaying a display device and an image having a size larger than the displayable size of the display device, the terminal device is configured to instruct scrolling of the image in at least one direction. Receiving means for accepting an operation by the user, and the accepting means R Speed detection means for detecting the speed of the accepted operation, and the speed detection means R Detected speed And the number of times it was determined to be within the same speed range On the basis of the, For the scroll mode with a large scroll amount, set a large threshold value for the number of times, Scroll mode selection means for selecting any one of a plurality of scroll modes each having a different scroll amount, and each time the amount of operation received by the reception means reaches a predetermined unit operation amount, the scroll mode selection means Scroll processing means for performing a scroll operation of the image displayed on the display unit with a scroll amount corresponding to the selected scroll mode. Do I did it.
[0011]
When the terminal device according to the second aspect of the present invention is displaying a display device and an image having a size larger than the displayable size of the display device, the terminal device is configured to instruct scrolling of the image in at least one direction. Receiving means for accepting an operation by the user, and the accepting means R Speed detection means for detecting the speed of the accepted operation, and the speed detection means R The detected speed is compared with a predetermined threshold, and the detected speed is Low speed Or high speed And Low speed If it is determined, select the first mode for scrolling the screen with the first change amount according to the operation received by the receiving means And set the variable to zero And high speed If you decide When 1 is added to the variable and the variable reaches a predetermined value Scroll mode selection means for selecting a second mode for scrolling the screen with a second change amount larger than the first change amount; and the reception means. R Select the scroll mode according to the accepted operation means Scroll processing means for performing a scrolling operation of the image displayed on the display unit with a scroll amount according to the first mode or the second mode selected by Do I did it.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0017]
(First embodiment)
FIG. 1 is a block diagram showing a main configuration of a wireless communication terminal configured by applying the display control apparatus according to the first embodiment of the present invention.
[0018]
As shown in this figure, the wireless communication terminal of this embodiment includes an antenna 1, an antenna duplexer 2, a receiving unit (RX) 3, a frequency synthesizer (SYN) 4, a transmitting unit (TX) 5, a CDMA signal processing unit 6, Voice code processor 7, PCM code processor 8, receiver amplifier 9, speaker 10, microphone 11, transmitter amplifier 12, liquid crystal display (hereinafter referred to as LCD) 13, key unit 14, track bar 15, sounder 16, A vibrator 17, a memory unit 18, a timer 19, and a control unit 20 are included.
[0019]
A radio frequency signal sent from a base station (not shown) via a radio channel is received by the antenna 1 and converted into a radio wave-electric signal, and then given to the antenna duplexer 2. The antenna duplexer 2 includes a reception filter 2a and a transmission filter 2b. The radio frequency signal sent from the base station via the radio channel passes through the reception filter 2a and is given to the reception unit 3.
[0020]
In the receiving unit 3, the radio frequency signal is mixed with a reception local oscillation signal given from the frequency synthesizer 4 and converted into an intermediate frequency signal. The frequency of the reception local oscillation signal generated by the frequency synthesizer 4 is indicated by a control voltage from the control unit 20.
[0021]
The intermediate frequency signal obtained by the receiving unit 3 is subjected to orthogonal demodulation processing in the CDMA signal processing unit 6 and further subjected to despreading processing to be converted into data of a predetermined format according to the data rate. The
[0022]
The conversion result in the CDMA signal processing unit 6 is given to the speech code processing unit 7 and the control unit 20 as received data. Further, the data indicating the data rate in the conversion result is given to the control unit 20 as the reception data rate.
[0023]
The voice code processing unit 7 performs a decompression process on the received data obtained by the CDMA signal processing unit 6 according to the received data rate notified from the control unit 20, and the processing result is displayed on the PCM code processing unit 8. To give.
[0024]
The PCM code processing unit 8 decodes the reception data expanded by the voice code processing unit 7 to obtain an analog received signal. The analog reception signal is amplified by the reception amplifier 9 and then given to the speaker 10, and is output by the speaker 10.
[0025]
On the other hand, the transmission voice generated by the speaker is converted into an electric signal, that is, an analog transmission signal by the microphone 11. The analog transmission signal is amplified to an appropriate level by the transmission amplifier 12, and then subjected to PCM encoding processing by the PCM code processing unit 8, and is given to the voice code processing unit 7 as transmission data.
[0026]
The voice code processing unit 7 detects the amount of transmitted voice energy from the transmission data provided from the PCM code processing unit 8, determines the data rate based on the detection result, and notifies the control unit 20 of the data rate. Then, the transmission data is compressed into a burst signal having a format corresponding to the data rate and provided to the CDMA signal processing unit 6.
[0027]
The CDMA signal processing unit 6 performs spreading processing on the burst signal compressed by the voice code processing unit 7 and the burst signal given from the control unit 20 using a PN code corresponding to the transmission channel. Then, quadrature modulation processing is performed on the processing result, and the result is given to the transmission unit 5 as a quadrature modulation signal.
[0028]
The transmission unit 5 mixes the quadrature modulation signal provided from the CDMA signal processing unit 6 with the transmission local oscillation signal provided from the frequency synthesizer 4 to convert it into a radio frequency signal, and based on the transmission data rate notified by the control unit 20. Thus, only the effective portion of the radio frequency signal is amplified at a high frequency and supplied to the antenna duplexer 2. The frequency of the transmission local oscillation signal generated by the frequency synthesizer 4 is indicated by a control voltage from the control unit 20.
[0029]
Only the radio frequency signal in the transmission band of the radio frequency signal given from the transmission unit 5 to the antenna duplexer 2 is given to the antenna 1 by the transmission filter 2b and radiated to the space toward the base station.
[0030]
The LCD 13 displays an arbitrary image under the control of the control unit 20, and is used, for example, for displaying a word, displaying a partner image in videophone communication, and displaying a video of a video distribution service.
[0031]
The key unit 14 receives an instruction input by the user regarding a telephone number, outgoing call, call termination, character input, or various user settings, and notifies the control unit 20 of the specified content.
[0032]
As shown in FIG. 2B, the track bar 15 includes a roller portion 15a, a rotary encoder 15b, and a push switch 15c, and is accommodated in the housing B. 2B is a diagram schematically showing the arrangement state of the track bars 15 in the housing B. FIG.
[0033]
The roller portion 15a is a cylindrical body formed of resin or the like as shown in FIG. 2 (c), is rotatable in the direction indicated by the arrow in FIG. As shown in the front view and FIG. 2 (b), the housing B is disposed in a state in which a part protrudes from the front surface of the housing B to the outside. Thus, the roller portion 15a can be arbitrarily rotated by the user.
[0034]
The rotary encoder 15b is provided at one end of the roller portion 15a, detects the rotation of the roller portion 15a by the unit rotation amount and the rotation direction thereof, and outputs rotation information indicating these. The unit rotation amount may be arbitrary, but in this embodiment, it is 1/8 rotation (45 ° rotation).
[0035]
The push switch 15c is turned on by the roller unit 15a when the roller unit 15a is pushed inward of the housing B, and outputs a push signal in response thereto.
[0036]
The rotation information output from the rotary encoder 15b and the pressing signal output from the push switch 15c are given to the control unit 20 as detection information on the track bar 15.
[0037]
The sounder 16 performs melody playback and various alarm sounds.
[0038]
The vibrator 17 performs a vibrator operation so as to notify the user of an incoming call or the like.
[0039]
The memory unit 18 uses a flash memory, for example, and is used for storing various types of user setting information.
[0040]
The timer 19 performs a time measuring operation for measuring a time interval in which the track bar 15 rotates the unit rotation amount of the roller unit 15 a under the control of the control unit 20.
[0041]
The control unit 20 is configured mainly with, for example, a CPU, a ROM, a RAM, and the like, and performs overall control of each unit of the wireless communication terminal by software processing to realize an operation as a wireless communication terminal. The control unit 20 adds processing means for realizing various well-known general functions in the same type of wireless communication terminal, such as control processing for enabling communication via a mobile communication network (not shown). Thus, the rotation speed calculation means 20a, the scroll mode selection means 20b, and the scroll processing means 20c are realized by software processing.
[0042]
Here, the rotation speed calculation means 20 a calculates the rotation speed of the roller portion 15 a based on the rotation information given from the track bar 15 and the timer value of the timer 19.
[0043]
The scroll mode selection unit 20b selects the scroll mode based on the rotation speed of the roller unit 15a calculated by the rotation speed calculation unit 20a.
[0044]
The scroll processing unit 20c performs display control for scrolling the screen in the scroll mode selected by the scroll mode selection unit 20b based on the rotation information given from the track bar 15.
[0045]
Next, the operation of the wireless communication terminal configured as described above will be described. Since operations related to voice calls and the like and transmission / reception of electronic mail are the same as those of the same type of existing apparatus, description thereof will be omitted, and operations related to screen scrolling will be described in detail here.
[0046]
First, when the image to be displayed is larger than the displayable size of the LCD 13 when the received mail is displayed, for example, only the area corresponding to the displayable size of the LCD 13 in the image to be displayed is displayed on the LCD 13.
[0047]
In such a state, the control unit 20 starts a screen scroll process as shown in FIG. 3 at every predetermined timing such as every predetermined time period. The screen scrolling process is performed at a cycle shorter than the cycle at which the rotary encoder 15b detects the rotation of one unit rotation amount when the roller unit 15a is rotated at the assumed maximum speed.
[0048]
In this screen scrolling process, the control unit 20 first determines whether the roller unit is based on whether or not new rotation information is given from the track bar 15 and, if new rotation information is given, based on the contents of the rotation information. It is checked whether 15a has been rotated by one unit rotation amount in the forward direction (for example, the downward direction in FIG. 2A) (step ST1). If it is determined here that the roller unit 15a is not rotating, the control unit 20 determines that no scroll instruction has been given by the user, and ends the current screen scroll process.
[0049]
On the other hand, if the roller part 15a is rotated in the forward direction by the user, and the rotation information indicating that is given from the rotary encoder 15b, the control part 20 is rotating the roller part 15a. Judge. In this case, the control unit 20 takes in the timer value of the timer 19 at that time, and calculates the rotation speed of the roller unit 15a (step ST2). Note that the timer 19 is restarted each time the screen is scrolled as will be described later, and the timer value corresponds to the elapsed time since the previous scrolling, and is equivalent to one unit rotation amount of the roller portion 15a. This also corresponds to the time elapsed since the last time rotation was detected. Therefore, the rotation speed of the roller portion 15a can be calculated by regarding the timer value of the timer 19 as the time required for the roller portion 15a to rotate by one unit rotation amount.
[0050]
If the rotation speed of the roller unit 15a is calculated, the control unit 20 checks whether or not the calculated rotation speed is smaller than a preset threshold value (step ST3).
[0051]
If the rotation speed is smaller than the threshold value, that is, if the roller unit 15a is rotated at a low speed, the control unit 20 scrolls the screen for one line (step ST4). If the rotation speed is greater than the threshold value, that is, if the roller unit 15a is rotating at high speed, the control unit 20 scrolls the screen for one page (step ST5).
[0052]
Thus, if the display screen on the LCD 13 at the start of the current screen scrolling process is as shown in FIG. 4A, for example, one line is displayed when the user slowly operates the roller unit 15a. Only the screen scrolling is performed and the display screen on the LCD 13 changes as shown in FIG. 4B, for example. The display screen changes as shown in FIG. 4C, for example.
[0053]
When the scrolling in step ST4 or step ST5 is completed, the control unit 20 restarts the timer 19 in order to measure the time required for the next rotation of one unit angle (step ST6). End the scroll process.
[0054]
As described above, according to the present embodiment, the scroll instruction by the user is received by the rotation of the roller unit 15a in the track bar 15 and the screen is scrolled according to this, but according to the rotation of the roller unit 15a by one unit rotation amount. The scroll amount is different for one line when the rotation speed of the roller portion 15a is low, and for one page when the rotation speed is high. Therefore, the user can perform scrolling by arbitrarily using line scrolling and page scrolling only by rotating the roller portion 15a, and can realize excellent operability with excellent response and lightness. .
[0055]
That is, first, by quickly operating the roller unit 15a to perform page scrolling, it is quickly brought to the vicinity of the target information, and then the operation speed of the roller unit 15a is decreased to switch to one line scroll, and the target information is changed. It can be displayed. As a result, when there is information that you want to read back at the end of a sentence, such as when reading back a long text mail, the scroll operation that has been troublesome because of the small number of scrolls from the small screen conventionally, A simple and light scrolling operation that can display information can be performed. In the case of a wireless communication terminal as in this embodiment, the displayable size of the LCD 13 is reduced due to the limitation of the mounting area, and it is difficult to mount a large scroll operation device. The effect of is very great.
[0056]
Note that immediately after the rotation of the roller unit 15a is started from the state where the roller unit 15a is stopped, the timer value includes the time during which the roller unit 15a is stopped, and the roller unit 15a actually rotates for one unit rotation amount. It will be longer than the time required. For this reason, even if the user rotates the roller portion 15a quickly so as to scroll the page from the beginning, the screen scroll may be initially performed by the line scroll. However, there is a possibility that the line scroll may be performed against the user's will in this way only once, and after that, the scroll mode corresponding to the actual rotation speed of the roller unit 15a is correct. Because it is selected, there is no problem.
[0057]
(Second Embodiment)
By the way, in the first embodiment, although the operation speed of the roller unit 15a and the scroll amount coincide with each other, an intuitive operation can be performed. Since it is necessary to continue to rotate 15a at high speed, there is a possibility that it becomes a burden on the user. An embodiment for improving this point will be described below.
[0058]
Since the hardware configuration of the wireless communication terminal of this embodiment is the same as that of the wireless communication terminal of the first embodiment shown in FIGS. 1 and 2, the description thereof is omitted.
[0059]
The wireless communication terminal according to the present embodiment is different from the wireless communication terminal according to the first embodiment in the processing contents of the screen scroll process performed by the control unit 20 by software processing.
[0060]
FIG. 5 shows a processing procedure of the control unit 20 at the time of screen scroll processing in the present embodiment.
[0061]
The operation of the wireless communication terminal according to this embodiment will be described below with reference to this flowchart.
[0062]
First, when the image to be displayed is larger than the displayable size of the LCD 13 when the received mail is displayed, for example, only the area corresponding to the displayable size of the LCD 13 in the image to be displayed is displayed on the LCD 13.
[0063]
In such a state, the control unit 20 starts the screen scroll process shown in FIG. 5 at every predetermined timing such as every predetermined time period. The screen scrolling process is performed at a cycle shorter than the cycle at which the rotary encoder 15b detects the rotation of one unit rotation amount when the roller unit 15a is rotated at the assumed maximum speed.
[0064]
In this screen scrolling process, the control unit 20 first checks whether or not the roller unit 15a has been rotated by one unit rotation amount based on whether or not new rotation information is given from the track bar 15 (step ST11). If it is determined here that the roller unit 15a is not rotating, the control unit 20 determines that no scroll instruction has been given by the user, and ends the current screen scroll process.
[0065]
On the other hand, if the roller portion 15a is rotated by the user and rotation information is given from the rotary encoder 15b according to the rotation, the control unit 20 determines that the roller portion 15a is rotating. In this case, the control unit 20 confirms whether or not the rotation direction indicated in the rotation information is a forward direction (step ST12).
[0066]
If the roller unit 15a has rotated in the forward direction, the control unit 20 subsequently checks whether or not the scroll mode is being fixed to the page scroll mode (step ST13).
[0067]
If the scroll mode is not fixed to the page scroll mode, the control unit 20 takes in the timer value of the timer 19 at the present time, and calculates the rotation speed of the roller unit 15a (step ST14). And the control part 20 confirms whether this calculated rotational speed is smaller than the preset threshold value (step ST15).
[0068]
If the rotation speed is smaller than the threshold value, that is, if the roller unit 15a is rotated at a low speed, the control unit 20 scrolls the screen for one line (step ST16). If the rotation speed is greater than the threshold value, that is, if the roller unit 15a is rotating at high speed, the control unit 20 scrolls the screen for one page (step ST17).
[0069]
As described above, if the page scroll mode is not fixed, the line scroll mode or the page scroll mode is selected according to the rotational speed of the roller portion 15a as in the first embodiment, and one unit in the scroll mode is selected. An amount of screen scrolling is performed.
[0070]
However, in this embodiment, when the screen scroll for one page is performed in step ST17, the scroll mode is fixed to the page scroll mode (step ST18).
[0071]
Then, after the process of step ST16 or step ST18, the control unit 20 restarts the timer 19 in order to measure the time required for the next rotation of one unit angle (step ST19), thereby ending the current screen scroll process. To do.
[0072]
By the way, if the roller unit 15a is rotated in the forward direction in the state where the scroll mode is fixed to the page scroll mode as described above, the control unit 20 determines in step ST13 that the page scroll mode is fixed. . In this case, the control unit 20 scrolls the screen for one page regardless of the rotation speed of the roller unit 15a (step ST20).
[0073]
When the screen scrolling for one page is completed, the control unit 20 ends the current screen scrolling process as it is.
[0074]
By the way, when the roller part 15a is rotated in the reverse direction, the control part 20 recognizes that in step ST12. In this case, the control unit 20 subsequently checks whether or not the page scroll mode is fixed (step ST21). If the page scroll mode is not fixed, the control unit 20 ignores the current rotation of the roller unit 15a and ends the current screen scroll process. However, if the page scroll mode is being fixed, the control unit 20 releases the fixing of the page scroll mode (step ST22), and this ends the screen scroll process this time.
[0075]
As described above, according to the present embodiment, once the roller unit 15a is rotated at a high speed in the forward direction, the page scroll mode is changed to the page scroll mode until the roller unit 15a is rotated in the reverse direction thereafter. Fix it. While the page scroll mode is fixed, every time the roller portion 15a is rotated by one unit rotation amount in the forward direction, scrolling is performed for one page regardless of the rotation speed.
[0076]
Therefore, as in the first embodiment, the user can perform scrolling by arbitrarily using line scrolling and page scrolling only by rotating the roller portion 15a, which is very convenient. In addition, even when page scrolling is to be continued, the user does not need to continue high-speed operation of the roller unit 15a, and the operation of the roller unit 15a becomes easier.
[0077]
In addition, since the page scroll mode can be fixed and released only by the operation of rotating the roller portion 15a, the convenience is not lowered.
[0078]
(Third embodiment)
Now, in the first embodiment, regardless of whether the line scroll or the page scroll is performed, the screen scroll of one unit amount (one line or one page) is performed in accordance with the rotation of the one unit rotation amount of the roller portion 15a. Intuitive operation is possible because the operation amount matches the scroll amount. However, if the roller portion 15a is rotated at a high speed so as to perform page scrolling, the rotation amount of the roller portion 15a tends to reach a plurality of unit rotation amounts. That is, when scrolling a small number of pages such as one page or two pages by page scrolling, it is necessary to rotate the roller portion 15a with a small amount of rotation at high speed, and the operation is performed by the user. It can be difficult for people. An embodiment for improving this point will be described below.
[0079]
FIG. 6 is a block diagram illustrating a main configuration of a wireless communication terminal configured by applying the display control apparatus according to the present embodiment. In addition, the same code | symbol is attached | subjected to FIG. 1 and an identical part, and the detailed description is abbreviate | omitted.
[0080]
As shown in this figure, the wireless communication terminal of this embodiment includes an antenna 1, an antenna duplexer 2, a receiving unit 3, a frequency synthesizer 4, a transmitting unit 5, a CDMA signal processing unit 6, a speech code processing unit 7, and PCM code processing. Unit 8, receiver amplifier 9, speaker 10, microphone 11, transmitter amplifier 12, liquid crystal display 13, key unit 14, track bar 15, sounder 16, vibrator 17, memory unit 18, timer 19 and control unit 21 ing.
[0081]
That is, the wireless communication terminal of the present embodiment is provided with a control unit 21 instead of the control unit 20 in the wireless communication terminal of the first embodiment.
[0082]
The control unit 21 is configured mainly with, for example, a CPU, a ROM, a RAM, and the like, and performs overall control of each unit of the wireless communication terminal by software processing to realize an operation as a wireless communication terminal. The control unit 21 adds processing means for realizing various well-known general functions in the same type of wireless communication terminal, such as control processing for enabling communication via a mobile communication network (not shown). Thus, the rotation speed calculation means 20a, scroll mode selection means 20b, scroll processing means 20c, and scroll sensitivity changing means 21a are realized by software processing. That is, the control unit 21 is obtained by adding scroll sensitivity changing means 21a to the control unit 20 in the first embodiment.
[0083]
The scroll sensitivity changing means 21a changes the amount of rotation of the rotating body for causing the scroll processing means 20c to execute one screen scroll according to the scroll speed calculated by the rotation speed calculating means 20a.
[0084]
Next, the operation of the wireless communication terminal configured as described above will be described.
[0085]
First, when the image to be displayed is larger than the displayable size of the LCD 13 when the received mail is displayed, for example, only the area corresponding to the displayable size of the LCD 13 in the image to be displayed is displayed on the LCD 13.
[0086]
In such a state, the control unit 20 starts a screen scroll process as shown in FIG. 7 at every predetermined timing such as every predetermined time period. The screen scrolling process is performed at a cycle shorter than the cycle at which the rotary encoder 15b detects the rotation of one unit rotation amount when the roller unit 15a is rotated at the assumed maximum speed.
[0087]
In this screen scrolling process, the control unit 20 first determines whether the roller unit is based on whether or not new rotation information is given from the track bar 15 and, if new rotation information is given, based on the contents of the rotation information. It is confirmed whether or not 15a has been rotated by one unit rotation amount in the forward direction (for example, the downward direction in FIG. 2A) (step ST31). If it is determined here that the roller unit 15a is not rotating, the control unit 20 determines that no scroll instruction has been given by the user, and ends the current screen scroll process.
[0088]
On the other hand, when the roller unit 15a is rotated in the forward direction, the control unit 20 takes in the timer value of the timer 19 at that time and calculates the rotation speed of the roller unit 15a (step ST32). Then, the control unit 20 checks whether or not the calculated rotation speed is smaller than a preset threshold value (step ST33).
[0089]
If the rotation speed is smaller than the threshold value, that is, if the roller unit 15a is rotated at a low speed, the control unit 20 immediately scrolls the screen for one line (step ST34).
[0090]
However, if the rotational speed is greater than the threshold value, that is, if the roller unit 15a is rotating at high speed, the control unit 20 updates the variable n to n + 1 (step ST35), and the updated variable n is It is confirmed whether or not the value is a predetermined value (“4” in the present embodiment) (step ST36). Only when the variable n is “4”, the control unit 20 scrolls the screen for one page (step ST37).
[0091]
If the scrolling in step ST34 or step ST37 is completed, the control unit 20 clears the variable n to “0” (step ST38).
[0092]
Following this, or when it is determined in step ST36 that the variable n is not "4", the control unit 20 restarts the timer 19 to measure the time required for the next rotation of one unit angle. (Step ST39) With this, this screen scroll process is complete | finished.
[0093]
As described above, according to the present embodiment, when the rotation speed of the roller unit 15a is low, the screen scroll for one line is immediately performed according to the rotation of one unit rotation amount. When the rotation speed is high, this high-speed rotation is continuously performed by 4 unit rotation amounts and the variable n becomes “4”, that is, the roller portion 15a rotates 1/2 turn (180 °). The screen scroll for one page is performed only when the image is rotated at high speed for a minute, and the substantial unit rotation amount of the roller unit 15a for one screen scroll is changed.
[0094]
Therefore, as in the first embodiment, the user can perform scrolling by arbitrarily using line scrolling and page scrolling only by rotating the roller portion 15a, which is very convenient. In addition, when the user operates the roller unit 15a at high speed in order to perform page scrolling, the responsiveness to the rotation of the roller unit 15a is lower than that during low-speed rotation, so the user can move the roller unit 15a at high speed. It is possible to easily adjust the scroll amount while operating.
[0095]
The present invention is not limited to the above embodiments. For example, in each of the above embodiments, an example in which scrolling in one direction is performed is shown, but the present invention is also applicable to scrolling in two directions by changing the scroll direction according to the rotation direction of the roller portion 15a. Is possible.
[0096]
In each of the above-described embodiments, the line scroll mode and the page scroll mode are exemplified as the two scroll modes. However, when the scroll mode for scrolling in another form such as a multi-line scroll or a jump scroll is used. The present invention can also be applied.
[0097]
In each of the above embodiments, the cylindrical roller 15a is used as the rotator, but another shape such as a sphere may be used as the rotator.
[0098]
In each of the above embodiments, the display control device according to the present invention is applied to a wireless communication terminal. However, any device can be used as long as the device has a function of displaying an image with scrolling according to a user operation. The present invention can also be applied. Of course, the display for displaying the image is not limited to the LCD.
[0099]
In each of the above embodiments, the rotational speed of the roller portion 15a is calculated based on the time interval at which the rotary encoder 15b detects one unit rotation amount. However, the roller portion can be obtained by another method such as providing a speed sensor separately. The rotation speed 15a may be detected. In each of the above embodiments, the rotary encoder 15b is shared for rotation detection and rotation speed detection, and the configuration is simplified. However, if a speed sensor or the like is provided separately, the configuration is complicated. However, since the actual rotational speed of the roller portion 15a can be measured more accurately, the scroll mode can be switched with high accuracy.
[0100]
In the first embodiment and the third embodiment, the scroll mode is classified into the line scroll mode and the page scroll mode, and the rotation speed is classified into low speed / high speed based on one threshold value. Although the scroll mode is selected, three or more scroll modes are prepared, and the rotation speed is classified into the same number as the scroll mode based on a plurality of threshold values. It is also possible to select arbitrarily.
[0101]
In the second embodiment, three or more scroll modes may be prepared, and the scroll mode to be used step by step may be switched every time the roller portion 15a is rotated at high speed.
[0102]
In the second embodiment, the release condition for fixing the page scroll mode is the reverse rotation of one unit rotation amount of the roller portion 15a. However, this may be the reverse rotation of a plurality of unit rotation amounts, or for a certain period of time. Other conditions such as the rotation stop of the roller unit 15a extending over and pressing of a release key prepared separately may be used.
[0103]
In each of the above embodiments, the scroll mode is changed according to the rotation speed of the roller unit 15a. For example, the state (tilt or the like) of the apparatus is detected using an acceleration sensor or the like, and based on the detection result. The scroll mode may be changed.
[0104]
In addition, various modifications can be made without departing from the scope of the present invention.
[0105]
【The invention's effect】
According to the present invention, it is possible to arbitrarily select and use a plurality of scroll modes by a simple and intuitive operation.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a main configuration of a wireless communication terminal configured by applying a display control apparatus according to a first embodiment of the present invention.
FIG. 2 is a diagram showing a configuration of a track bar 15 in FIG.
FIG. 3 is a flowchart showing a processing procedure in screen scroll processing in the first embodiment by the control unit 20 in FIG. 1;
FIG. 4 is a diagram showing an example of screen scrolling in the first embodiment.
FIG. 5 is a flowchart showing a processing procedure in screen scroll processing in the second embodiment by the control unit 20 in FIG. 1;
FIG. 6 is a block diagram showing a main configuration of a wireless communication terminal configured by applying a display control apparatus according to a third embodiment of the present invention.
7 is a flowchart showing a processing procedure in screen scroll processing by the control unit 21 in FIG. 6;
[Explanation of symbols]
13 ... Liquid crystal display
15 ... Track bar
15a ... Roller part
15b ... Rotary encoder
15c ... Push switch
19 ... Timer
20, 21 ... control unit
20a ... rotational speed calculation means
20b ... Scroll mode selection means
20c ... Scroll processing means
21a ... Scroll sensitivity changing means

Claims (4)

An indicator,
An accepting means for accepting an operation by a user for a scroll instruction in at least one direction of the image when an image having a size larger than the displayable size of the display is being displayed;
And speed detection means for detecting the speed of the I Ri received operation to the receiving means,
Based on the number of times it is determined continuously as a detected speed and in the same speed range Ri by this speed detecting means, the scroll amount larger scroll mode is set larger the threshold value of the number, the scroll amount are different Scroll mode selection means for selecting any one of a plurality of scroll modes;
Each time the amount of operation received by the receiving unit reaches a predetermined unit operation amount, the image displayed on the display is scrolled by a scroll amount corresponding to the scroll mode selected by the scroll mode selecting unit. A terminal device comprising scroll processing means for performing an operation. The accepting means includes a rotating body that can be arbitrarily rotated by the user in at least one direction,
The terminal device according to claim 1, wherein the speed detection unit detects a rotation speed of the rotating body.   The terminal device according to claim 1, wherein the scroll processing unit changes the unit operation amount in accordance with a speed detected by the speed detection unit. An indicator,
An accepting means for accepting an operation by a user for a scroll instruction in at least one direction of the image when an image having a size larger than the displayable size of the display is being displayed;
And speed detection means for detecting the speed of the I Ri received operation to the receiving means,
Comparing by Ri detected speed with a predetermined threshold to the speed detecting means, judges the detected speed as slow or fast, if it is determined that the low-speed first in accordance with the operation received by the reception unit The first mode for scrolling the screen with the amount of change is selected and the variable is set to zero . When it is determined that the speed is high , 1 is added to the variable, and when the variable reaches a predetermined value, Scroll mode selection means for selecting a second mode for scrolling the screen with a second change amount larger than the first change amount;
Scroll amount the scroll mode selecting means in accordance with a first mode or a second mode selected in response to the I Ri received operation to the receiving unit, the scrolling operation of the image displayed on the display unit terminal apparatus characterized by comprising a scroll processing unit to perform.

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