JP2005156993A - Information terminal apparatus and control method thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simply realize mixed display of television (TV) display and the other data picture display in a portable information terminal apparatus such as a cellular phone. <P>SOLUTION: The cellular phone (information terminal apparatus) 1 is provided with a TV picture display part 23 for writing TV picture display data based on TV video signals in a display memory 18 in order to display TV images on a display panel 2, a plotting buffer 16 for storing data picture display data different from the TV picture display data and a picture display control part 17 for transferring the data picture display data from the plotting buffer 16 and writing the transferred data in the remaining area of the display memory 18 in which the TV picture display data are already written by the TV picture display part 23. Consequently the TV picture and the other data display picture can be simultaneously displayed on the same display panel. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a portable information terminal device such as a mobile phone, and more particularly to an information terminal device having a display function of television data and a control method thereof.

  In recent years, mobile phones have been improved in performance, and power saving and screen drawing capabilities have been improved. Along with this, functions such as camera, music playback, image playback, and games are added to mobile phones, and it is expected that TV functions will be added in the future. Specifically, the TV functions installed in mobile phones will support not only conventional terrestrial analog broadcasting but also terrestrial digital broadcasting, and will receive and draw not only image broadcasting but also text broadcasting. Will be. As described above, it is expected that mobile phones will be equipped with a mixed display function for simultaneously displaying image display and teletext display.

  However, in the conventional mobile phone, the screen display control is not created in consideration of the mixed display of the television display and the data broadcast display. As a result, in order to realize mixed display with a conventional mobile phone, it is necessary to newly create television display control and mixed data broadcast display control, and perform drawing control suitable for each display area.

  In addition, many conventional mobile phones are provided with a Web browsing function. Therefore, if the Web browsing function can be used for data broadcast display, operability can be adjusted and programming efficiency can be improved. However, the Web browsing function is not created in consideration of the mixed display, and it is difficult to actually use it.

  In addition, in the conventional mobile phone, when the display such as mail other than the data broadcast display is mixedly displayed on the television display, the display position and the display area are different between the television display (mixed display) and the non-display. Screen and control creation at the time of display is required separately. Note that there are hundreds of screen displays in a mobile phone, and it is very difficult to control all of them in consideration of mixed drawing with a television display. In addition, when the screens for displaying and not displaying the television are created separately, it takes time to create the screen and a separate area for storing the screen data for displaying the television is required, which puts pressure on the memory of the mobile phone.

  The present invention has been made to solve the above problems, and its purpose is to easily realize a mixed display of a TV display and other data screen displays in a portable information terminal device such as a mobile phone. It is an object of the present invention to provide an information terminal device and a control method thereof.

  In order to solve the above-described problems, an information terminal device according to the present invention is an information terminal device that includes a display memory and performs display on the display device by writing display data in the display memory. A television screen display means for writing first display data based on a video signal of a television to a display memory for display on a display device; a drawing buffer for storing second display data different from the first display data; Screen display control means for transferring and writing the second display data from the drawing buffer to the remaining area of the display memory in which the first display data is written by the television screen display means. It is a feature.

  Furthermore, in the information terminal device according to the present invention, the screen display control means manages the second display data in the drawing buffer in a predetermined area unit and transfers it to the display memory in the area unit. It is characterized by being.

  Furthermore, the information terminal device according to the present invention is characterized by comprising second screen display means for writing the second display data into the drawing buffer in units of the area.

  Further, in the information terminal device according to the present invention, the second screen display means writes display data for displaying the screen of the application installed in the device on the display device in the drawing buffer in units of the area. It is characterized by being.

  Furthermore, the information terminal device according to the present invention is characterized in that the data screen display means writes display data for displaying the state of the device on the display device into the drawing buffer in units of the area. Yes.

  The control method for an information terminal device according to the present invention is a control method for an information terminal device that performs display on a display device by writing display data in a display memory, in order to display television images on the display device. A TV screen display step for writing first display data based on a video signal of the TV to a display memory, and the first display from the drawing buffer to the remaining area of the display memory in which the first display data is written. And a second screen display step of transferring and writing second display data different from the data.

  As described above, the information terminal device according to the present invention includes the television screen display means for writing the first display data based on the television video signal in the display memory in order to display the television image on the display device, and the first screen described above. A drawing buffer for storing second display data different from the display data of the first display data, and the second area from the drawing buffer to the remaining area of the display memory in which the first display data is written by the television screen display means. Screen display control means for transferring and writing the display data.

  The information terminal device control method according to the present invention includes a television screen display step of writing first display data based on a television video signal in a display memory to display television images on a display device, A second screen display step for transferring and writing second display data different from the first display data from the drawing buffer to the remaining area of the display memory in which the display data is written. is there.

  Thereby, the television screen and the display screen made up of the second display data can be mixed and displayed on one screen. Therefore, even in the information terminal device in which the area of the television screen is fixed, it is possible to easily realize mixed display of the television screen and the display screen made up of the second display data. Examples of the display screen made up of the second display data include a screen for an application installed in the information terminal device, a screen for displaying the status and functions of the information terminal device, and the like.

  Furthermore, in the information terminal device according to the present invention, the screen display control means manages the second display data in the drawing buffer in a predetermined area unit and transfers it to the display memory in the area unit. is there.

  Accordingly, the second display data can be transferred from the drawing buffer to the display memory in units of areas, so that the screen configuration can be easily changed. Therefore, the full screen display of the data screen, the full screen display of the television screen, and the mixed display of the data screen and the television screen can be easily switched.

  Furthermore, the information terminal device according to the present invention comprises a second screen display means for writing the second display data into the drawing buffer in units of the area.

  Accordingly, the second display data can be written into the drawing buffer in consideration of transferring the area from the drawing buffer to the display memory in units of areas.

  In addition, it is desirable for the second screen display means to write the second display data into the drawing buffer so that the second display data can be collectively transferred from the drawing buffer to the display memory. In this way, when the display screen composed of the second display data is mixed with the television screen, the second display data is transferred from the drawing buffer to the display memory for each area, and the second display data is displayed. In the case where the display screen composed of the display screen and the television screen is not mixedly displayed, the second display data can be collectively transferred from the drawing buffer to the display memory. Therefore, it is possible to easily switch between these display forms.

  Further, in the information terminal device according to the present invention, the second screen display means writes display data for displaying the screen of the application installed in the device on the display device in the drawing buffer in units of the area. Is.

  As a result, the application screen can be mixed and displayed on the television screen and one screen.

  Furthermore, in the information terminal device according to the present invention, the data screen display means writes display data for displaying the state of the device itself on the display device in the drawing buffer in units of the area.

  As a result, the screen for displaying the state of the device itself can be mixedly displayed on the television screen and one screen.

  The information terminal apparatus may be realized by a computer. In this case, a control program for causing the information terminal device to be realized by the computer by operating the computer as each of the above means and a computer-readable recording medium on which the control program is recorded also fall within the scope of the present invention.

  One embodiment of the present invention will be described below with reference to FIGS.

  A mobile phone (information terminal device) 1 according to the present embodiment is a mobile phone having a function of making a call with another mobile phone via a mobile phone communication network. The mobile phone 1 has a function of receiving and displaying a television broadcast. Note that although a mobile phone is described as an example in this embodiment, the present invention is not limited to this, and can be applied to other information terminal devices, particularly portable information terminal devices with limited memory capacity. .

  The mobile phone 1 includes a display memory 18, and displays data on the display panel (display device) 2 by writing display data into the display memory 18.

  FIG. 2A is a perspective view showing the outer shape of the mobile phone 1. As shown in the figure, the mobile phone 1 includes an operation unit 3 such as buttons for a user to operate, and a display panel 2 that presents image information to the user.

  FIG. 2B is an explanatory diagram showing a state in which a television screen is displayed on the entire screen of the display panel 2. As shown in the figure, when a television screen is displayed on the entire screen of the display panel 2, the display panel 2 is displayed in a landscape orientation. The size and aspect ratio of the display panel 2 can be selected as appropriate.

  FIG. 3A is an explanatory diagram showing a state in which a teletext screen is displayed. As shown in the figure, when displaying a teletext or a mobile phone menu or other application screen on the display panel 2, the display panel 2 displays the screen in a portrait orientation. In addition, in the TV non-display screen 200 shown in the figure, the screen includes a pictogram area 201 for displaying radio wave intensity display, a data area 202 for displaying contents such as text broadcasting, and a soft key area 203 for displaying key guidance. It is divided into In the present embodiment, a television video broadcast screen is referred to as a television screen, and a screen displaying other contents is referred to as a data screen.

  FIG. 3B is an explanatory diagram showing a state in which a television screen and a data screen are mixedly displayed on the display panel 2. In the television display screen 210 shown in the figure, the screen is divided into the pictogram area 201, the television screen area 211 for displaying television images, the data area 212 for displaying contents such as teletext, and the soft key area 203. It is divided. In FIG. 3B, the pictogram area 201 and the soft key area 203 are displayed in the same state as in FIG. 3A, and the TV screen area 211 and the data area 212 are displayed in the area corresponding to the data area 202. Shows the case. However, the forms of the television non-display screen 200 and the television display screen 210 are not limited thereto.

  Hereinafter, in the mobile phone 1, the full screen display of the TV screen (FIG. 2B), the full screen display of the data screen (FIG. 3A, the TV non-display screen 200), the TV screen and the data screen, The configuration and operation for switching between the mixed display (FIG. 3B, the television display screen 210) and displaying on the display panel 2 will be described in detail.

  FIG. 1 is a functional block diagram showing an outline of the configuration of the mobile phone 1. FIG. 1 shows only functions related to display. Therefore, for example, functions related to telephone calls and user interfaces are omitted.

  The cellular phone 1 includes a cellular phone transmission / reception unit 11, an application unit 12, a screen configuration data storage unit 13, a state acquisition unit 14, a data screen display unit (second screen display means) 15, a drawing buffer 16, a screen display control unit ( Screen display control means) 17, display memory 18, television receiver 20, and television screen display part (television screen display means) 23.

  The cellular phone 1 communicates with the cellular phone network via the antenna by the cellular phone transmission / reception unit 11. Further, the display on the display panel 2 is performed by writing bitmap data in the display memory 18.

  The application unit 12 executes function settings of the mobile phone 1 and other applications provided in the mobile phone 1. For example, the mobile phone 1 displays a clock on a data screen as an application. 4A shows a state in which the clock is displayed on the full screen (screen non-display screen 200), and FIG. 4B shows a state in which the clock is mixed with the TV screen (screen on TV display). 210).

  In particular, the application unit 12 has a function of a Web browser, and this makes the operation system of the data display screen common. For example, the function of the Web browser can access a Web site via a mobile phone network and display a Web page. Further, it is also used for other displays such as displaying a file stored in the mobile phone 1.

  The data screen display unit 15 writes the display output of the application unit 12 and the state acquisition unit 14 in the drawing buffer 16 as data screen display data. The data screen display unit 15 displays the data screen so as to configure the television non-display screen 200 and the television display screen 210 according to the screen configuration data (region configuration information, region arrangement information) read from the screen configuration data storage unit 13. Data is written into the drawing buffer 16.

  The data screen display unit 15 writes the data screen display data in the drawing buffer 16 in units of areas (pict area 201, data area 202, soft key area 203, etc.). For example, the data screen display unit 15 writes the screen of the application (application unit 12) installed in its own device in the drawing buffer 16 in units of the data area 202. Further, the data screen display unit 15 writes display data for displaying the state of the own device acquired by the state acquisition unit 14 on the display panel 2 in the drawing buffer 16 in units of pictogram areas 201.

  In particular, the data screen display unit 15 writes the data screen display data in the drawing buffer 16 in a state of displaying the entire screen on the display panel 2. That is, the data screen display data of the drawing buffer 16 is transferred to the display memory 18 from the start address to the end address corresponding to the entire screen of the display panel 2 so that the data screen can be displayed on the entire screen of the display panel 2. It has become. In addition, the data screen display unit 15 manages the data screen display data for each area using a pointer to the drawing buffer 16. Thereby, the data screen display data can be transferred to the display memory 18 for each area.

  The state acquisition unit 14 acquires the state of the device itself, for example, the radio wave intensity of the mobile phone, the remaining battery level, and the like, and transmits it to the data screen display unit 15.

  The screen configuration data storage unit 13 stores screen configuration data that defines the configuration of the data screen. The screen configuration data will be described later.

  The drawing buffer 16 stores the data screen display data (second display data) written by the data screen display unit 15. The data screen display data is display data different from the television screen display data described later.

  The television receiver 20 receives a broadcast signal via an antenna. The television receiver 20 includes a teletext receiver 21 that receives a text broadcast and a video broadcast receiver 22 that receives a video broadcast. In this embodiment, the voice is omitted. Video, text, and audio may be received independently, or may be received simultaneously with other signals.

  The television screen display unit 23 writes television screen display data (first display data) based on the video signal received by the video broadcast receiving unit 22 in the display memory 18. The position at which the television screen display data is written to the display memory 18 follows the full screen / mixing control information from the screen display control unit 17. That is, if full screen display is specified by the full screen / mixing control information, the television screen display unit 23 writes the television screen display data in the display memory 18 so as to be displayed on the full screen of the display panel 2. If the mixed display is designated by the full screen / mixing control information, the television screen display unit 23 writes the television screen display data in the display memory 18 so as to be displayed on a part of the display panel 2. Note that the writing position in the mixed display may be fixed, or may be designated for each data screen from the screen display control unit 17.

  The character data received by the teletext receiving unit 21 is transmitted to the application unit 12 and displayed as a data screen by the data screen display unit 15.

  The screen display control unit 17 controls switching between full screen display of the television screen, full screen display of the data screen, and mixed display of the television screen and the data screen. Specifically, in the case of full-screen display of a television screen, full-screen display is designated by the full-screen / mixing control information for the television screen display unit 23. In the case of a full screen display of the data screen, the data screen display data for one screen is batch transferred from the drawing buffer 16 according to the screen display control information. Further, in the case of mixed display of the TV screen and the data screen, the mixed display is designated by the full screen / mixing control information for the TV screen display unit 23, while one screen portion from the drawing buffer 16 by the screen display control information. Data screen display data is transferred for each area to the writing position of each area.

  The screen display control unit 17 includes a scroll display unit 17a that performs scroll control of the data screen. The scroll display unit 17a will be described later.

  Here, the screen configuration data will be described. The screen configuration data is preset for each data screen and stored in the screen configuration data storage unit 13. The screen configuration data includes region configuration information and region arrangement information. The screen configuration data may be configured in a table format.

  In the area configuration information, data defining the display state of each area is registered. For example, in the area configuration information, “part type, X coordinate, Y coordinate, area width, area height, drawing buffer pointer, display foreground color, display background color” is set for each area. The “component type” specifically specifies the type of display component such as a label, anchor label, list, text box, or the like. “X coordinate, Y coordinate” specifies where the display start position of the area configuration information corresponds when the screen configuration data is displayed on the screen. This is performed by, for example, coordinates based on the origin ((x, y) = (0, 0)), and is performed in units of dots in the case of a system that realizes drawing by dot display. In “Pointer to drawing buffer”, the head pointer of the data display screen data stored in the drawing buffer 16 is designated.

  In the area arrangement information, an area to be drawn on one data screen and data defining the arrangement of the area are registered. For example, the area arrangement information includes, for each data screen, a “display memory pointer for writing the first area, a display memory pointer for writing the second area,..., A display memory pointer for writing the last area. "Is set.

  Such region configuration information and region arrangement information are read from the screen configuration data storage unit 13 for each data screen displayed by the data screen display unit 15 and the data screen display data is written to the drawing buffer 16. Specifically, the data screen display unit 15 generates data screen display data of each area according to the area configuration information, and writes it to the drawing buffer 16 according to the designated pointer. Further, the data screen display unit 15 notifies the area arrangement information to the screen display control unit 17 (window library), and transfers the data screen display data from the drawing buffer 16 to the display memory 18 in accordance with a form such as mixed display. .

  FIG. 5 is a flowchart showing an outline of transfer control of data screen display data by the screen display control unit 17 in the mobile phone 1. Hereinafter, the case shown in FIGS. 3A and 3B will be described as an example.

  First, at the start of drawing, the screen display control unit 17 determines whether the television is currently being displayed (S11). If the result of this determination is that it is not during television display (NO in S11), the data screen display data in the drawing buffer 16 are transferred together to the display memory 18 (S12). That is, when the data screen (screen 200 when no television is displayed) is displayed without the television being displayed, a full transfer for one screen is performed.

  On the other hand, if it is during television display in step S11 (YES in S11), the transfer of the data screen display data from the drawing buffer 16 is the pictogram area transfer (S13), the data area transfer (S14), and the soft key area transfer ( The process is divided into three steps of S15). At this time, as shown in FIG. 3B, the television screen display unit 23 sequentially writes television screen display data in the television area 211 of the television display screen 210 (television screen display step). That is, when displaying the data screen while the television is displayed, the screen display control unit 17 writes the data screen display data while avoiding the television area 211 according to the area arrangement information.

  After transferring the data screen display data from the drawing buffer 16 to the display memory 18 and shifting to the display state, when the screen change is detected by the screen display control unit 17 (S17), the processing of steps S11 to S14 is performed. . Steps S11 to S14 correspond to the second screen display step.

  FIG. 6 is a flowchart showing an outline of scroll control of the data screen by the screen display control unit 17 in the mobile phone 1. This control is performed by the scroll display unit 17a of the screen display control unit 17. Hereinafter, the case shown in FIGS. 3A and 3B will be described as an example.

  When the television non-display screen 200 shown in FIG. 3 (a) is switched to the television display screen 210 shown in FIG. 3 (b), the television screen region 211 is displayed in the data region 202. It cannot be displayed. Therefore, as in the data area 212, for example, a scroll bar is displayed so that the user can browse while scrolling the screen.

  First, during the screen display (S21), when scroll processing occurs due to the user's key (operation unit 3) input or the like (S22), the screen display control unit 17 determines whether or not the television display is being performed (S23). As a result of the determination, if it is not during television display (NO in S23; FIG. 3A), the data area 202 is displayed as described above (S24, S25).

  On the other hand, if the result of determination in step S23 is TV display (YES in S23), the scroll display unit 17a constructs data screen display data in the data area 212 (limited screen area) (S26) and transfers it to the display memory 18. (S27).

  Here, in the mobile phone 1, the screen configuration data is shared by the television non-display screen 200 and the television display screen 210. For example, in the case of the clock screen shown in FIG. 4, the data area 202 is displayed on the entire screen of the display panel 2 in the TV non-display screen 200 (FIG. 4A), but the TV display screen 210 (FIG. 4). In FIG. 4B, the display content at the upper end of the data area 202 is displayed in the data area 213 at the bottom of the display panel 2. Thereby, the user of the mobile phone 1 can check the standby time while watching TV.

  In consideration of the fact that only the upper end portion of the data area 202 of the TV non-display screen 200 is displayed on the TV non-display screen 200, the screen configuration data is displayed on the TV display screen 210 so that only the clock can be displayed. It is obtained by being designed.

  Specifically, the region configuration information and the region arrangement information are created so as to be shared between the television display time and the non-display time. Here, in the area arrangement information, display coordinates (pointer to the display memory 18) are set so that the TV screen area 211 (FIG. 3B) is not used during TV display. Then, during mixed display, the screen display control unit 17 transfers the data screen display data of each area so as not to overlap the television screen area 211 according to the area arrangement information.

  As described above, by sharing the screen configuration data of the data screens when the television is displayed and when not displayed, the following advantages can be obtained. That is, since the screen configuration data can be shared between the full screen display and the mixed display of the data screen, the capacity of the screen configuration data storage unit 13 can be reduced and the use efficiency of the memory is good. Further, it is not necessary to determine the display / non-display state of the television by the application unit 12 that creates display data or the data screen display unit 15 that stores display data. Since the determination of the display / non-display state of the television and the control of the display position are collectively performed by the screen display control unit 17 (window library), inconsistency due to the difference in screen does not occur.

  Note that the screen configuration data may not be shared. Specifically, the region configuration information and the region arrangement information are created separately when the television is displayed and when not displayed. Here, in the area configuration information at the time of television display, display coordinates (pointer to the drawing buffer 16) are set so as not to use the television screen area 211 (FIG. 3B) at the time of television display. In this case, it is desirable to separate the drawing buffer for television display and the drawing buffer for non-display.

  As described above, in the cellular phone 1, when displaying the data screen (FIGS. 3A and 3B), the control unit (application unit 12) is the window library (data screen display unit 15, screen display control unit 17). The window library constructs data screen display data (drawing data) in the drawing buffer 16 at the stage before drawing, and transfers it to the display memory 18. Here, in this transfer, when the data screen is displayed on the entire screen, the data screen display data for one screen is collectively transferred from the drawing buffer 16. On the other hand, when the data screen is displayed on the mixed screen with the television screen, the data screen display data is transferred from the drawing buffer 16 for each area. At this time, as in the data area 212 (FIG. 3B), the transfer start coordinate and the area are changed at the time of transfer for the area where the drawing start position and the area width are different from the storage state of the drawing buffer 16.

  In particular, the data screen display unit 15 writes the data screen display data in the drawing buffer 16 in a state of displaying the entire screen on the display panel 2. That is, the data screen display data of the drawing buffer 16 is transferred to the display memory 18 from the start address to the end address corresponding to the entire screen of the display panel 2 so that the data screen can be displayed on the entire screen of the display panel 2. It has become. In addition, the data screen display unit 15 manages the data screen display data for each area using a pointer to the drawing buffer 16. Thereby, the data screen display data can be transferred to the display memory 18 for each area.

  That is, the data screen display unit 15 writes the data screen display data to the drawing buffer 16 so that the data screen display data can be collectively transferred from the drawing buffer 16 to the display memory 18, and the screen display control unit 17 stores the data screen display data in the drawing buffer 16. Data screen display data is managed in units of areas. In addition, the screen display control unit 17 changes the writing position of the data screen display data in the display memory 18 depending on whether the data screen is displayed in full screen or mixed with the television screen.

  Thereby, the full screen display of the data screen, the full screen display of the television screen, and the mixed display of the data screen and the television screen can be easily switched. Further, the screen configuration data can be shared. In addition, since the screen display control unit 17 collectively controls the mixed display, other control programming does not need to be conscious of the mixed display of the screen, and programming efficiency and operability are improved.

  As shown in FIGS. 3A and 3B, in the mobile phone 1, the data area 202 of the television non-display screen 200 is transferred to the position and the drawing area of the data area 212 of the television display screen 210. Thereby, the mixed display of a television screen and a data screen is realizable. Furthermore, display control can be shared between when the TV is displayed and when the TV is not displayed. In the data area 212, a data broadcast screen, an application screen, and the like can be displayed.

  In addition, like the pictogram area 201 and the soft key area 203, it is possible to provide an area where the display does not change between when the TV is displayed and when the TV is not displayed. Accordingly, various function display screens such as operation button guidance and state display screens such as electric field strength can always be displayed on the data screen regardless of whether the television screen is displayed or not. In addition, display control can be shared between the television display and the television non-display.

  The screen examples shown in this embodiment are for explanation, and the number of areas and the contents displayed in each area can be arbitrarily set. For example, the data area may be divided into a plurality of parts. Also, the division position may be variable. When the division position is changed, the pointer may be changed according to the position and stored in the screen configuration data storage unit 13, and the changed position is limited to that time, and the screen configuration is displayed when it is displayed next time. You may display according to the screen structure data of the data storage part 13. FIG.

  In addition, each functional block of the mobile phone 1, in particular, the application unit 12, the data screen display unit 15, and the screen display control unit 17 may be configured by hardware logic, or by software using a CPU as follows. It may be realized.

  That is, each functional block of the mobile phone 1 can be realized by, for example, a CPU (Central Processing Unit) executing a program for realizing a processing operation in each internal functional block. The program is stored in, for example, a storage device, and is read into a working storage area such as a RAM and executed by the CPU when necessary. The storage device for storing the program can be configured by a non-volatile IC memory such as a flash EEPROM or a non-volatile recording medium such as a hard disk. Further, the program may be stored in various removable media and executed by reading the program from the removable media when necessary. The program may be downloaded from the outside via a communication network and executed.

  Furthermore, this embodiment does not limit the scope of the present invention, and various modifications are possible within the scope of the present invention. For example, the present embodiment can be configured as follows.

  The information terminal device of the present invention includes a function for displaying a television, a function for displaying a data broadcast (including teletext), a function for displaying the function display of the television and the data broadcast or a mobile phone on the same screen, and a screen. It has a window library function that controls drawing, and the display control unit of data broadcasting or the display control unit of the function of the mobile phone can perform drawing settings that do not take into account the difference in screen position and drawing area between TV display and non-display Further, it may be configured such that the television display and the data broadcast display or the mobile phone function display are performed on the same screen only by the window library control.

  This makes it possible to display various function displays and data broadcast displays on the mobile phone on the same screen as the TV display, and because the window library controls the mixed display all at once, other control programming uses a mixture of screens. It is not necessary to be aware of the display, and programming efficiency and operability are improved.

  The information terminal device of the present invention is a mobile phone having a TV broadcast display function, a data broadcast display function, and a function for performing a mixed display of a TV and a data broadcast. It may be configured so that display control can be shared instead of being created separately.

  Furthermore, the information terminal device of the present invention is a mobile phone that displays various functions of a mobile phone during TV display, and does not create various function display controls separately for TV display and TV non-display. It may be configured to be shared.

  Furthermore, the information terminal device of the present invention is a mobile phone that displays various functions of a mobile phone during TV display, and can be created by dividing the field strength display and the operation button guidance display into a TV display and a TV non-display. Instead, it may be configured to share control.

  INDUSTRIAL APPLICABILITY The present invention can easily perform mixed display of television display and other data screen display, and thus can be suitably used for an information terminal device in which a region for displaying a television screen is fixed, particularly a mobile phone.

It is a functional block diagram which shows the outline of the structure regarding the display of the mobile telephone which concerns on one embodiment of this invention. FIG. 2A is a perspective view showing the outer shape of the mobile phone. FIG. 2B is an explanatory diagram showing a state in which a television screen is displayed on the entire screen of the display panel of the mobile phone. FIG. 3A is an explanatory diagram showing a state in which a data screen is displayed on the display panel of the mobile phone. FIG. 3B is an explanatory diagram showing a state in which a television screen and a data screen are mixedly displayed on the display panel of the mobile phone. FIG. 3A is an explanatory diagram showing another state in which a data screen is displayed on the display panel of the mobile phone. FIG. 3B is an explanatory diagram showing another state in which a television screen and a data screen are mixedly displayed on the display panel of the mobile phone. It is a flowchart which shows the outline of transfer control of the data screen display data in the said mobile telephone. It is a flowchart which shows the outline of the scroll control in the data screen in the said mobile phone.

Explanation of symbols

1 Mobile phone (information terminal equipment)
2 Display panel (display device)
12 Application section (application)
14 State acquisition unit (state acquisition means)
15 Data screen display section (second screen display means)
16 Drawing buffer 17 Screen display control unit (screen display control means)
18 Display memory 23 TV screen display section (TV screen display means)
201 pictogram area
203 Softkey area (area)
212 Data area
S13 to S15 Second screen display step

Claims (6)

An information terminal device comprising a display memory and performing display on a display device by writing display data to the display memory,
TV screen display means for writing first display data based on a TV video signal to a display memory for displaying TV video on a display device;
A drawing buffer for storing second display data different from the first display data;
Screen display control means for transferring and writing the second display data from the drawing buffer to the remaining area of the display memory in which the first display data is written by the television screen display means. A characteristic information terminal device.   2. The screen display control unit manages the second display data in the drawing buffer in units of a predetermined area and transfers the data to the display memory in units of the area. Information terminal equipment.   The information terminal device according to claim 2, further comprising second screen display means for writing the second display data into the drawing buffer in units of the area.   The second screen display means writes display data for displaying an application screen installed in the device on the display device in the drawing buffer in units of the area. The information terminal device described in 1.   5. The information terminal according to claim 3, wherein the data screen display means writes display data for displaying the state of the device on the display device into the drawing buffer in units of the area. apparatus. A method for controlling an information terminal device that performs display on a display device by writing display data to a display memory,
A television screen display step of writing first display data based on a television video signal to a display memory in order to display a television image on a display device;
A second screen display step of transferring and writing second display data different from the first display data from the drawing buffer to the remaining area of the display memory in which the first display data is written; A control method for an information terminal device, comprising:

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