JP4828904B2 - Broadcast receiver - Google Patents

Description

  The present invention relates to a broadcast receiving apparatus used in, for example, a vehicle-mounted terrestrial digital television receiver.

  In a terrestrial digital television receiver, a remote control device is used as a user interface. In addition to the “Power” key, “Channel selection” key, “Menu” key, etc., this remote control device is provided with various keys for operation such as the “Cursor” key, the “Cursor” key, and the “Enter” key. Yes.

  The user (viewer) views the data broadcast while selecting an object (such as a menu item) on the screen by pressing these keys. In this case, the operation of the remote control key for each object is described in BML (Broadcasting Markup Language) for each content of data broadcasting.

  By the way, for example, a BS television receiver or the like can be operated by a remote controller at a fixed location, but an in-vehicle digital terrestrial television receiver needs to perform a remote controller operation in a narrow space during movement. For this reason, the remote control operation is inconvenient, and the operation while looking at both the screen and the remote control key also has a safety problem.

Thus, a touch panel is considered as a user interface that replaces the remote control device. For example, Patent Document 1 discloses that a function of a remote control key is assigned to a touch operation area of a touch panel by analyzing an operation related to a remote control operation described in BML.
JP 2004-140811 A

  According to Patent Document 1, since the function of the remote control key is assigned in advance to an object provided on the data broadcasting screen, if the object is directly touched on the screen, processing corresponding to the object is executed. be able to.

  However, the content of data broadcasting includes various display items, and it is difficult to understand which is a selectable object. This is because the content of data broadcasting is not made assuming a touch panel. For this reason, there is a problem that erroneous operations increase, such as touching an unrelated part on the screen many times.

  Further, even if the selectable object is known, there is a problem that it is difficult to accurately touch the target object on the screen because the in-vehicle television screen is very small.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a broadcast receiving apparatus in which anyone can easily select a target object on a screen in an input operation using a touch panel. To do.

  A broadcast receiving apparatus according to an aspect of the present invention is a broadcast receiving apparatus provided with a touch panel, receiving means for receiving a data broadcast signal including a plurality of objects to be operated by a remote controller, and data received by the receiving means. Display means for displaying a broadcast signal on the screen, and screen area dividing means for dividing the screen area of the data broadcast displayed by the display means in the vertical and horizontal directions with the position of the object currently selected by the cursor as a reference point And relative position determination means for determining a relative positional relationship between the specified position and the reference point when an arbitrary position in the area divided by the screen area dividing means is specified through the touch panel, Based on the relative positional relationship determined by the position determination means, the key signal corresponding to the area where the specified position exists And signal generating means for generating, according to the key signal generated by the signal generating means, configured and control means for moving the cursor to the position of the object to be next selected.

  According to such a configuration, the screen area of the data broadcast is divided vertically and horizontally with reference to the current object position (cursor position). When an arbitrary position in the divided area is designated, the cursor moves to the next object to be selected by generation of a key signal corresponding to the area where the designated position exists.

  According to the present invention, in an input operation using a touch panel, anyone can easily select a target object by using a screen area as up / down / left / right keys of a remote controller. In this case, there is no need to select the object directly, so even if the screen size is small as in the in-vehicle receiver, there is no mistake in pressing, and it is not possible to know which part on the screen is the selectable object. However, the input operation can be performed without any problem.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a block diagram showing a configuration of a broadcast receiving apparatus capable of receiving terrestrial digital broadcasting according to an embodiment of the present invention. The broadcast receiving apparatus is used as, for example, an in-vehicle terrestrial digital television receiver.

  As shown in FIG. 1, the broadcast receiving apparatus in this embodiment includes a receiving antenna 1, a tuner 2, a demodulator 3, an MPEG (Moving Picture Experts Group) decoder 4, an Audio decoder 5, a Video decoder 6, a data broadcast decoder 7, An output processing unit 8 and a presentation processing unit 9 are provided.

  The digital transmission signal received by the receiving antenna 1 is frequency-converted by the tuner 2, demodulated by the demodulator 3, and returned to a TS (Transport Stream) packet sent from the broadcasting station. The MPEG decoder 4 breaks down the TS packet into video, audio, and data, and gives them to the audio decoder 5, the video decoder 6, and the data broadcast decoder 7.

  The audio decoder 5 processes audio data. The audio data processed by the audio decoder 5 is converted into an analog signal through the output processing unit 8 and then sent to an output device such as a speaker 14.

  The video decoder 6 processes video data. The video data processed by the video decoder 6 is subjected to processing necessary for display such as NTSC encoding by the presentation processing unit 9 and then sent to the display 15. The display 15 is composed of, for example, an LCD (Liquid Crystal Display) display device, and a transparent touch panel 16 is disposed on the screen. The touch panel 16 detects a position where the user touches the panel using, for example, an electrostatic method, and inputs coordinate information of the position.

  Further, the broadcast receiving apparatus includes a data broadcast content analysis unit 10, a pseudo remote control control unit 11, a touch panel control unit 12, a CPU 13, a storage unit 17, and the like.

  The data broadcast content analysis unit 10 is a part that analyzes data broadcast content described in BML, and includes a default cursor position acquisition unit 10a and a remote control key assignment acquisition unit 10b.

  The default cursor position acquisition unit 10a acquires a default cursor position (the position of the object currently selected by the cursor at the time of initial display among the objects selectable by the remote controller) immediately after receiving the data broadcast. The remote control key assignment acquisition unit 10b acquires information on the remote control keys assigned to the object currently selected by the default cursor.

  The pseudo remote controller 11 is a part that replaces position information input from the touch panel 16 through the touch panel controller 12 with a key signal for remote control operation, and includes a screen area dividing unit 11a, a relative position determination unit 11b, and a remote key replacement unit 11c. And a determination key display portion 11d.

  The screen area dividing unit 11a divides the data broadcasting screen area with the current object position (cursor position) as a reference point based on the analysis result obtained by the data broadcast content analyzing unit 10. When the cursor is not displayed on the screen, the screen area is divided with a predetermined position such as the center of the screen as a reference point.

  The relative position determination unit 11 b determines a relative positional relationship between the current cursor position and a position (touch position) designated through the touch panel 16. The remote control key replacement unit 11c generates a key signal for remote control operation corresponding to the area where the specified position exists based on the relative positional relationship determined by the relative position determination unit 11b. The determination key display processing unit 11d determines whether or not an operation with the determination key is necessary as the cursor moves, and displays a button for generating a determination key signal on the screen when necessary.

  The touch panel control unit 12 includes a position designation unit 12a for converting and inputting a position touched on the screen by the user through the touch panel 16 into screen coordinate information.

  The CPU 13 controls the entire apparatus. The CPU 13 includes a microprocessor, and reads various programs stored in a ROM (not shown) and executes various processes according to the procedures described in the program.

  The storage unit 17 is provided with a cursor position holding unit 17a and a previous touch position holding unit 17b. The cursor position holding unit 17a holds the position information of the cursor displayed on the data broadcast screen. The previous touch position holding unit 17b stores a position (touch position) designated through the touch panel 16 and a key signal for remote control operation generated at the position in association with each other.

  Next, before describing the operation of the present apparatus, a remote control apparatus used in a digital broadcast receiver will be briefly described.

  FIG. 17 is a diagram showing an example of a general remote control device used in a digital broadcast receiver.

  The main body of the remote control device 20 includes a “power” key 21, a “channel selection switching” key 22, a “data input” key 23, an “EPG (Electronic Program Guide)” key 24, a “menu” key 25, up / down / left / right “Cursor” key 26, “Enter” key 26 a, “Channel switching” keys 27 a and 27 b, “Data broadcast display / non-display” key 28, “Return” key 29, “Video” key 30, “Audio” key 31, A “subtitle” key 32, “blue”, “red”, “green”, “yellow” “color” key 33, and the like are provided.

  The user (viewer) views the data broadcast by pressing these keys to select various objects (menu items, etc.) on the screen. In this case, the operation of the remote control device for the data broadcast screen is determined in advance, and the key operation for each object is described in BML (Broadcasting Markup Language) for each content of the data broadcast.

  In data broadcasting defined by ARIB (Radio Industry Association), the cursor for object selection (sometimes called focus) is moved by operating the “cursor” key 26 up / down / left / right, and the selection is made by the “decision” key 26a. The basic flow of operations is to determine the screen and change the screen. In addition to this, there are four types of “color” keys 33 (“blue”, “red”, “green”, “yellow”) as keys for directly executing functions. What is executed is explained on the screen.

  An index number called navigation is assigned to an object that can be selected by such a remote control operation, and index number 0 is determined as a default object. For each object, the index number of the object to be moved in response to the input of the up / down / left / right keys is determined in advance.

  In addition, regarding the arrangement position, width, and height of each object, such information is embedded in the received script. As an access key, simultaneous operation of cursor movement and determination operation can be designated. However, selecting an object on the screen directly with a touch panel or the like is not stipulated.

  Here, since the content of the data broadcasting is not consistent with the user interface, it is often not immediately obvious which part is an area that can be selected by remote control operation. In this case, in the remote control operation, an object on the screen can be easily selected by moving the cursor. However, normal touch panel operations require the user to select an object by directly touching the screen, so if you do not know where the target object is, you can select the wrong object. There's a problem.

  Below, each function of this apparatus which eliminated the malfunction by such a touch panel operation is demonstrated in detail.

(Function 1)
First, function 1 of this apparatus will be described.

  Function 1 of this apparatus divides the data broadcasting screen area into four parts in the vertical and horizontal directions with the current object, that is, the cursor position as a reference point, and generates a key signal for remote control operation according to the area touched by the user. is there.

  FIG. 2 shows an example in which the screen area of data broadcasting is divided into four parts in the vertical and horizontal directions. 100 to 108 in the figure indicate objects.

  It is assumed that the object 100 is preset as the current object on the initial screen when the data broadcast signal is received, and the cursor CL moves from the object 100 as a starting point. In addition, each of the objects 100 to 108 is individually assigned with a key of a microcomputer operation corresponding to the content of the data broadcast in advance, and it is defined in advance which key is pressed to move to.

  Right, up, down, left, and right cursor keys (direction keys) are assigned to the object 100. The up key (up cursor key) moves to the object 102, and the down key (down cursor key) moves the object. It is assumed that movement to 107, movement to the object 104 is defined with the left key (left cursor key), and movement to the object 105 is defined with the right key (right cursor key).

  Each time the current object is changed in accordance with the movement of the cursor CL, each key of remote control operation assigned to the object and its operation are analyzed. In the example of FIG. 2, since the object 100 is current, the up / down / left / right cursor keys assigned to the object 100 and their movements are analyzed.

  Here, based on the analysis result of the object 100, the screen area is divided into four parts in the vertical and horizontal directions as indicated by dotted lines with the position (cursor position) of the object 100 as a reference point (the divided area at this time is defined as the area). E1-E4). Note that the dotted lines make the divided areas easy to understand and are basically not displayed.

  When the screen area is divided in this way, the areas E1 to E4 are regarded as pseudo remote control keys. For example, when the user touches somewhere in the area E1, an upper key signal is generated. As a result, the cursor CL moves from the object 100 to the object 102.

  In this case, the up key signal is generated for the area E1 because the area E1 touched by the user is in the upward direction when viewed from the object 100 (cursor position) as the reference point. Similarly, a lower key signal is generated in the area E2 in the downward direction of the object 100, a left key signal is generated in the area E3 in the left direction, and a right key signal is generated in the area E4 in the right direction.

  In addition, the reference point moves with the movement of the cursor CL. That is, for example, when the cursor CL moves to the object 102, the screen area is similarly divided with the position of the object 102 as the next reference point.

  Note that an object need not necessarily be included in the divided area. In the example of FIG. 3, up / down / left / right cursor keys are assigned to the current object 200, and the up key moves to the object 201, the down key to the object 203, the left key to the object 204, and the right key to the object 202. It is assumed that movement is defined.

  In such a case, among the areas E1 to E4 with the object 200 as the reference point, nothing exists in the area E1 and the area E2, but for example, when the area E1 is touched, an up key signal is generated and the cursor is CL moves from the object 200 to the object 201. Similarly, if the area E <b> 2 is touched, a down key signal is generated and the cursor CL moves to the object 203. This is because the area E1 is upward with respect to the object 200 and the area E2 is downward with respect to the object 200.

  Further, if the area E3 is touched, a left key signal is generated, and if the area E4 is touched, a right key signal is generated, and the cursor CL moves to the objects 204 and 202.

  In this way, by simply touching an arbitrary position in each area based on the current object (cursor position) on the screen, a key signal corresponding to the touched area is generated, and an intended input operation is performed. It can be done easily.

(Function 2)
Next, function 2 of this apparatus will be described.

  Function 2 of this apparatus divides the screen area according to the number of direction keys (cursor keys) actually assigned to the current object.

  That is, not all the keys of up, down, left, and right in the remote control operation are always assigned to the object. Depending on the content configuration, for example, only the up key is assigned, or the up key and down key are two. It may be assigned.

  In the example of FIG. 4, a case where three direction keys, an up key, a down key, and a left key, are assigned to the current object 300 is illustrated. In such a case, the screen area is divided into three areas E1 to E3 with the position of the object 300 (cursor position) as a reference point. When the user touches the area E1, an up key signal is generated. At this time, if it is defined that the up key for the object 300 is movement to the object 303, the cursor CL moves to the object 303.

  For example, if only two keys, the up key and the down key, are assigned to the object 300, the screen area is divided into two according to the up and down keys, and the up key can be touched by touching the inside of the top area. Touching in the lower area, the lower key signal is generated.

  Furthermore, if only one key is assigned to the object 300, the number of divisions of the screen area is one, and only the signal of that key is generated no matter where the object 300 is touched. Become.

  In this way, if the screen area is divided according to the number of direction keys assigned to the current object, the touchable range corresponding to only the keys that are actually effective is compared with the case where the screen area is always divided into four in the vertical direction. Widely secured. As a result, a more convenient touch panel operation can be realized.

(Function 3)
Next, function 3 of this apparatus will be described.

  Function 3 of the present apparatus divides the screen area with a predetermined position on the screen as a reference point when the current cursor is not displayed. That is, in the content of data broadcasting, the current object for remote control is usually designated at the time of initial display, but the current position may rarely be designated.

  In the example of FIG. 5, the explanation page can be moved with the left and right keys of the remote controller, but the cursor CL does not exist. In the figure, 401 is an explanatory text display field, 402 and 403 are marks representing the left and right keys of the remote controller, and neither is an object that can be selected by the cursor CL. In such a case, for example, the screen area is divided into four in the vertical and horizontal directions with a predetermined position Po such as the center of the screen as a reference point, and up, down, left and right keys are assigned to the respective areas E1 to E4.

  In the example of FIG. 5, only the left and right keys are used, so the screen area may be divided into two in accordance with the left and right keys. In this case, by touching the area E1 that is upward with respect to the position Po, an up key signal is generated, and the contents of the next page are displayed in the explanatory note display field 401. Further, if the user touches the area E2 in the downward direction with respect to the position Po, a down key signal is generated, and the contents of the previous page are displayed in the explanatory note display field 401.

  In this way, even when the cursor CL is not displayed, the screen area is divided using the center of the screen as a reference point, and thus the input operation similar to the function 1 is performed using the divided area. be able to.

(Function 4)
Next, function 4 of the present apparatus will be described.

  Function 4 of this apparatus is to display a button for determining key operation on the screen when it is necessary to operate the determining key as the cursor moves.

  That is, in data broadcasting content, processing corresponding to an object selected by a user's enter key operation may be executed after the cursor is moved by a remote controller. When all of the operations are to be performed with the touch panel, such a determination key instruction is also required. Therefore, a button for the determination key operation is displayed on the screen.

  In the example of FIG. 6, when the cursor CL is moved from the object 501 to the object 502, an operation of the determination key is required for the object 502. At this time, a determination key operation button 504 is displayed at a predetermined position on the screen (for example, at the upper right of the screen). When the display portion of the button 504 is touched, a determination key signal is generated and a predetermined process is executed.

  As described above, since the button for the determination key operation is displayed on the screen as necessary during the movement of the cursor, the determination operation can be easily performed even if the user is not particularly conscious.

(Function 5)
Next, function 5 of this apparatus will be described.

  In the function 4, the enter key operation button is displayed at a predetermined position on the screen. However, if the display position of the button overlaps the current object position, the button may not be visible to the user. Therefore, the function 5 of the present apparatus is characterized in that when displaying the button for determining key operation, when it is detected that the button overlaps with the object position, the display position is changed.

  In the example of FIG. 7, when the cursor CL is moved from the object 601 to the object 602, a determination key operation is required for the object 602. At this time, if the determination key operation button 604 is displayed at a predetermined position indicated by a dotted frame, the button 604 is displayed in another place because it overlaps the next current object 602. When the display portion of the button 604 is touched, a determination key signal is generated and a predetermined process is executed.

(Function 6)
Next, function 6 of this apparatus will be described.

  Function 6 of the present apparatus relates to the determination key as in function 5 above. The determination key operation button is displayed in a semi-transparent state on the current object area in a semi-transparent state, and the determination key is pressed by pressing the current object area. The signal is generated.

  In the example of FIG. 7, when the cursor CL is moved from the object 701 to the object 702, it is necessary to operate the determination key for the object 702. At this time, a determination key operation button 704 is displayed over the object 702 in a semi-transparent state. As a result, it is possible to operate the enter key while checking the object 702 without moving the line of sight to another place.

  The display form of the button 704 is not limited to semi-transparency, and for example, the object 702 may be surrounded by a dotted frame. In short, any form that allows the object to be visually recognized even if it is stacked may be used.

(Function 7)
Next, function 7 of this apparatus will be described.

  Function 7 of this device generates the same key signal as the previous time regardless of the current object position, that is, the movement of the reference point, when the user continues to press the same position (or the vicinity) as the previous time. To do.

  A specific example is shown in FIG. In the figure, 800 to 804 are objects that can be selected by the cursor CL, and P indicates a position touched by the user.

  As shown in FIG. 9A, when the object 800 is set as the current with the movement of the cursor CL, the screen area is set to 4 in accordance with the up / down / left / right keys with the position of the object 800 (cursor position) as a reference point. Divided. In this case, when the user touches the area E2 in the downward direction of the object 800, a down key signal is generated. As a result, the cursor CL moves to the object 801, and the screen area is divided into four again using the position of the object 801 as a new reference point.

  Here, for example, if the user keeps pressing the same position P without releasing his / her finger from the screen, it is considered that the same key operation as the previous operation is performed, and the signal of the lower key is continuously generated.

  That is, in the example of FIG. 9A, the position P touched by the user is in the area E4, and the right key signal is originally generated. However, since the same position as the previous time is touched, the down key Is generated. As a result, the cursor CL moves to the object 802 as shown in FIG. Similarly, when the same position P as in the previous time is continuously touched in the state of FIG. 9C, the down key signal is continuously output and the cursor CL moves to the object 803.

  In this way, when the cursor CL is moved in the same direction, by touching the same position as it is without changing the touch position according to the divided area that changes as the cursor CL moves, It is convenient to input the same key signal.

  In addition, even if it does not touch a place that completely coincides with the previous position, it is assumed that the same position is touched if it is within a certain error range.

  The same applies when the user lifts his / her finger from the screen and touches the vicinity of the same position again.

(Function 8)
Next, function 8 of this apparatus will be described.

  In the function 8 of the present apparatus, the boundary line of the divided area that changes with the movement of the cursor is explicitly displayed on the screen. Specifically, for example, the boundary lines of the divided areas indicated by dotted lines in FIGS. 2 and 3 are displayed on the screen in a form that can be identified by the user. Thus, the user can visually confirm the divided area, and can touch the intended area without hesitation even if the divided area changes as the cursor moves.

(Function 9)
Next, function 9 of this apparatus will be described.

  In the above function 1 or the like, the current object position (cursor position) is used as a reference point, and the up / down / left / right key signals are generated based on the relative positional relationship between the reference point and the position touched by the user. However, the user may touch the area where the current object is displayed. In this case, the relative positional relationship with the reference point cannot be determined. Therefore, the function 9 of the present apparatus is characterized in that a decision key signal is generated when the user touches the current object area.

  That is, as shown in FIG. 10, it is assumed that the screen area is divided into four parts according to up / down / left / right keys with the current object 902 as a reference point. In such a case, for example, if the user touches in the area E1, it can be determined that the area in the upward direction with respect to the reference point has been touched, and thus an up key signal is generated.

  However, when the user touches the area of the object 902, it cannot be determined which direction key should be issued. In particular, when the screen size is small as in a vehicle-mounted receiver, it is difficult to accurately touch only the intended place, and thus such a problem is likely to occur. Therefore, when an area that cannot be identified is touched, a determination key signal is generated. Thereby, it is possible to prevent the cursor CL from being inadvertently moved and a process not intended by the user from being executed.

  Note that the determination key signal is invalidated in a scene that does not require a determination operation. Therefore, even if it is generated in the area of the object 902, there is no particular problem.

  Further, in order to notify the user that the determination key signal is output, when the area of the object 902 is touched as shown in the example of FIG. 10, the determination key operation button 902 is moved to the position of the object 902. It may be displayed on the screen.

(Modification)
When the screen area is divided on the basis of the current object position (cursor position), as shown by the dotted lines in FIGS. Alternatively, a closed area such as a circle or a rectangle may be used as a key generation area, and may be arranged on the top, bottom, left, and right of the current object.

  A specific example is shown in FIG. Assume that two keys, for example, an up key and a down key are assigned to the current object 111. In such a case, a region Ex1 and a region Ex2 having a predetermined shape are created in the upward direction and the downward direction of the object 111, respectively. When the user touches the area Ex1, an up key signal is generated and the cursor CL moves to the object 112. When the area Ex2 is touched, a down key signal is generated and the cursor CL moves to the object 113.

  However, if the divided area is shaped as in the example of FIG. 11, the effective range that can be touched by the user becomes narrower. Therefore, the divided area is created by dividing the entire screen area as shown in FIGS. Is preferable in that the screen area can be used effectively.

  Further, when the divided area is shaped, it is difficult to know where the area is. Therefore, as described in the function 8, it is preferable to explicitly display the divided area in a form that can be identified by the user.

(Description of operation)
Next, specific operations for realizing the above functions 1 to 9 will be described with reference to flowcharts. Note that the processes shown in the following flowcharts are executed by the CPU 13 including a microprocessor reading a predetermined program. The CPU 13 controls the data broadcast content analysis unit 10, the pseudo remote control control unit 11, and the touch panel control unit 12 shown in FIG.

(A) Processing immediately after reception of data broadcast
FIG. 12 is a flowchart showing the process immediately after reception of the data broadcast of this apparatus.

  When a data broadcast signal including a plurality of objects is received, the broadcast screen is displayed on the display 15 shown in FIG. 1 (step A11). At this time, if a default cursor is designated (Yes in step A12), an object selection cursor CL is displayed at the position of the object designated by default (step A13). For example, if the object 100 in the reception screen of FIG. 2 is designated by default, the cursor CL is initially displayed there.

  Subsequently, the coordinate information of the cursor CL is acquired by the data broadcast content analysis unit 10 and held in the cursor position holding unit 17a of the storage unit 17 (step A14). In addition, the information on the movable destination from the current cursor position is acquired (step A15). This movable destination information is information that defines where the cursor CL is moved when a key operation is performed, starting from the current object (object 100 in the example of FIG. 2) on which the cursor CL is displayed. Therefore, it can be obtained by analyzing key information for remote control operation assigned in advance for each object.

(B) Touch panel input operation processing
FIG. 13 is a flowchart showing the input operation processing of the touch panel of this apparatus.

  When the user touches an arbitrary position on the screen via the touch panel 16, the information on the touch position is converted into coordinate information on the screen by the touch panel control section 12, and is given to the pseudo remote control control section 11 (step B11). .

  Here, the pseudo remote controller 11 determines whether or not the cursor CL is displayed on the screen (step B12). When the cursor CL is displayed on the screen, in other words, when the current object selected by the cursor CL exists (Yes in step B12), the processing corresponding to the function 1 is executed.

  That is, after the screen area is divided into four parts in the vertical and horizontal directions with the current object position (cursor position) as a reference point (see FIGS. 2 and 3), the coordinate information of the touch position obtained in step B11 is Based on the coordinate information of the cursor position held in the cursor position holding unit 17a, the relative positional relationship between the two is determined (step B13).

  When the screen area is divided, the process corresponding to the function 2 may be divided according to the number of keys actually assigned to the current object (see FIG. 4). Further, as a process corresponding to the function 8, the divided area may be displayed on the screen in a form that can be identified by the user.

  When the relative positional relationship between the touch position and the cursor position (reference point) is determined, the touch position is replaced with a remote control key based on the relative positional relationship (step B15), and the key signal is input to the CPU 13. (Step B16). Specifically, when the user's touch position is viewed from the current cursor position, a key signal in that direction is generated by determining in which divided area the touch position exists.

  On the other hand, if the cursor CL is not displayed on the screen in step B12 (No in step B12), the process corresponding to the function 3 is executed.

  That is, for example, after a predetermined area such as the center point of the screen is used as a reference point, the screen area is divided into four according to the up / down / left / right keys (see FIG. 5), and then the coordinate information of the predetermined position and the cursor position holding unit 17a are Based on the coordinate information of the held cursor position, the relative positional relationship between them is determined (step B14).

  In this case as well, the processing corresponding to the function 2 may be divided according to the number of keys actually assigned to the current object. Further, as a process corresponding to the function 8, the divided area may be displayed on the screen in a form that can be identified by the user.

  When the relative positional relationship between the touch position and the predetermined position (reference point) is determined, the touch position is replaced with a remote control key based on the relative positional relationship (step B15), and the key signal is input to the CPU 13. (Step B16). Specifically, when the user's touch position is viewed from a predetermined position (such as the center of the screen), a key signal in that direction is generated by determining in which divided area the touch position exists.

  In this manner, when a key signal is input to the CPU 13 by a user's touch operation, the cursor CL moves to the next object to be selected based on the move destination information of the object (step B17).

  Further, along with the movement of the cursor CL, the position information of the movement destination is acquired and the contents of the cursor position holding unit 17a are updated (step B18), and the movable destination information of the object existing at the movement destination is acquired. (Step B19).

(C) Enter key display process
FIG. 14 is a flowchart showing the determination key display process of the present apparatus. In FIG. 14, the processing from step C11 to C17 is the same as the processing from step A11 to A17 in FIG. 13, so the description thereof is omitted here.

  As described above, a key signal for remote control operation is generated by a user's touch panel operation, and the cursor CL moves according to the key signal. Here, with the movement of the cursor CL, processing corresponding to the function 4 is executed.

  That is, the pseudo remote control control unit 11 determines whether or not the operation of the enter key is necessary at the destination of the cursor CL (step C18). Note that it is determined in advance for each object of the content of the data broadcast that the operation of the enter key is necessary.

  If it is necessary to operate the enter key (Yes in step C18), a button for enter key operation is displayed on the screen (step C19). In this case, as shown in FIG. 6, in addition to the method of displaying the enter key operation button at a predetermined position on the screen, the processing corresponding to the function 5 is performed at a place that does not overlap with the destination object. A display method (see FIG. 7) and a process corresponding to the above function 6 include a method (see FIG. 8) in which the object is moved and displayed in a semi-transparent state.

  In this way, after the determination key operation button is displayed on the screen, if the user touches the button, a determination key signal is generated, and a predetermined process defined by the position of the object is performed. Will be executed.

  Further, along with the movement of the cursor CL, the position information of the movement destination is acquired and the contents of the cursor position holding unit 17a are updated (step C20), and the movable destination information of the object existing at the movement destination is acquired. (Step C21).

(D) Same key generation processing
FIG. 15 is a flowchart showing the same key generation process of this apparatus.

  When the user touches an arbitrary position on the screen via the touch panel 16, the information on the touch position is converted into coordinate information on the screen by the touch panel control section 12, and is given to the pseudo remote control control section 11 (step D11). .

  Here, the pseudo remote controller 11 determines whether or not the cursor CL is displayed on the screen (step D12). When the cursor CL is displayed on the screen, in other words, when there is a current object selected by the cursor CL (Yes in step D12), processing corresponding to the function 7 is executed.

  That is, the coordinate information of the previous touch position is read from the previous touch position holding unit 17b of the storage unit 17 and compared with the coordinate information of the current touch position obtained in step D11 (step D13). As a result, if both coordinate information match within a predetermined error range, it is determined that almost the same position as the previous time is touched (Yes in step D14). In such a case, even if the current touch position is in a different divided area from the previous time (see FIG. 9), it is replaced with the same key signal as the previous time and input to the CPU 13 (steps D17 and D18). Note that it is possible to determine what the previous key signal is by referring to the previous touch position holding unit 17b.

  On the other hand, if it is determined in step D14 that a position different from the previous touch position has been touched, or if it is determined in step D12 that the cursor CL is not displayed on the screen. The same processing as that of the function 1 is executed.

  That is, if it is determined that a position different from the previous touch position has been touched (No in step D14), the screen area is divided using the current object position (cursor position) as a reference point, and then the above-described step. Based on the coordinate information of the touch position obtained in D11 and the coordinate information of the cursor position held in the cursor position holding unit 17a, the relative positional relationship between the two is determined (step D15). Based on the relative positional relationship, the touch position is replaced with a remote control key (step D17), and the key signal is input to the CPU 13 (step D19).

  If the cursor CL is not displayed on the screen (No in step D12), for example, the screen area is divided using a predetermined position such as the center point of the screen as a reference point, and then the predetermined position is set. Based on the coordinate information and the coordinate information of the cursor position held in the cursor position holding unit 17a, the relative positional relationship between the two is determined (step D16). Based on the relative positional relationship, the touch position is replaced with a remote control key (step D17), and the key signal is input to the CPU 13 (step D19).

  In this manner, when a key signal is input to the CPU 13 by a user's touch operation, the cursor CL moves to the next object to be selected based on the destination information of the object (step D20). At this time, in preparation for the next processing, the coordinate information of the current touch position and the key signal generated there are stored in the previous touch position holding unit 17b (step D21).

  Further, the necessity of the enter key operation is determined along with the movement of the cursor CL, and if the enter key operation is necessary (Yes in step D22), the enter key operation button is displayed on the screen. (Step D23).

  Further, the position information of the movement destination of the cursor CL is acquired, the contents of the cursor position holding unit 17a are updated (step D24), and the move destination information of the object existing at the movement destination is acquired (step D25). ).

(D) Touch operation processing in the current object area
FIG. 16 is a flowchart showing a touch operation process in the current object area of the apparatus.

  When the user touches an arbitrary position on the screen via the touch panel 16, the information on the touch position is converted into coordinate information on the screen by the touch panel control unit 12, and is given to the pseudo remote control control unit 11 (step E11). .

  Here, the pseudo remote controller control unit 11 determines whether or not the cursor CL is displayed on the screen (step E12). When the cursor CL is displayed on the screen, in other words, when the current object selected by the cursor CL exists (Yes in step E12), it is determined that a touch operation has been performed within the object area. If yes (Yes in step E13). A process corresponding to the function 9 is executed.

  That is, as described with reference to FIG. 10, when the user touches the current object area, it cannot be determined which direction key should be issued. Therefore, when such an indistinguishable area is touched, a determination key signal is generated (step E14). At this time, a determination key operation button may be displayed at the object position. It should be noted that even when a determination key signal is input to the CPU 13 in a scene where no determination operation is required, there is no change in operation.

  On the other hand, when a touch operation is performed in a region other than the current object region in step E13 or when the cursor CL does not exist in step E12, the processing is the same as in FIG. Is omitted.

  As described above, according to the present apparatus, it is possible to easily select a target object and enjoy data broadcasting by using the screen area as up / down / left / right keys of the remote control. In this case, there is no need to select the object by directly touching the object as in the conventional touch panel operation, so even if you do not know which part of the screen is a selectable object, the input operation is the same as the normal remote control operation. It can be performed.

  In addition, when the operation of the enter key becomes necessary with the movement of the cursor CL, the enter key operation button is displayed on the screen, so that the user can touch the button without being particularly conscious. The determination operation can be easily performed just by doing.

  Also, if you touch the same position on the screen continuously, the same signal as the key signal generated at the previous touch position is generated. For example, the cursor CL is continuously moved in the same direction to select each object sequentially. This is convenient because you can deal with it without having to look closely at the screen.

  Although the above embodiment has been described assuming an in-vehicle digital terrestrial television receiver, the present invention is not limited to this and can be applied to an ordinary digital broadcast receiver.

  In short, the present invention is not limited to the above-described embodiments as they are, and can be embodied by modifying the components without departing from the scope of the invention in the implementation stage. In addition, various inventions can be formed by appropriately combining a plurality of components disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined.

  In addition, the method described in the above-described embodiment is a program that can be executed by a computer, such as a magnetic disk (flexible disk, hard disk, etc.), an optical disk (CD-ROM, DVD-ROM, etc.), a semiconductor memory, etc. The program can be written on a medium and applied to various apparatuses, or the program itself can be transmitted through a transmission medium such as a network and applied to various apparatuses. A computer that implements this apparatus reads a program recorded on a recording medium or a program provided via a transmission medium, and performs the above-described processing by controlling operations by this program.

FIG. 1 is a block diagram showing a configuration of a broadcast receiving apparatus capable of receiving terrestrial digital broadcasting according to an embodiment of the present invention. FIG. 2 is a diagram showing an example in which the screen area of data broadcasting is divided into four in the vertical and horizontal directions. FIG. 3 is a diagram showing another example in which the screen area of data broadcasting is divided into four in the vertical and horizontal directions. FIG. 4 is a diagram showing an example in which the screen area of data broadcasting is divided according to the number of keys assigned to the current object. FIG. 5 is a diagram for explaining a method of dividing the screen area when the current cursor is not displayed on the screen. FIG. 6 is a diagram illustrating an example of a case where a button for determining key operation is displayed as the cursor moves. FIG. 7 is a diagram showing another example in the case of displaying a determination key operation button as the cursor moves. FIG. 8 is a diagram showing another example in the case of displaying a determination key operation button as the cursor moves. FIG. 9 is a diagram for explaining the generation of keys when the same position on the screen is touched. FIG. 10 is a diagram for explaining key generation when the current object area on the screen is touched. FIG. 11 is a diagram showing an example when a region having a predetermined shape is displayed on the screen with the current object as a reference. FIG. 12 is a flowchart showing processing immediately after reception of a data broadcast by the broadcast receiving apparatus of the present invention. FIG. 13 is a flowchart showing touch panel input operation processing by the broadcast receiving apparatus of the present invention. FIG. 14 is a flowchart showing the determination key display process by the broadcast receiving apparatus of the present invention. FIG. 15 is a flowchart showing the same key generation processing by the broadcast receiving apparatus of the present invention. FIG. 16 is a flowchart showing touch operation processing in the current object area by the broadcast receiving apparatus of the present invention. FIG. 17 is a diagram showing an example of a general remote control device used in a digital broadcast receiver.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Reception antenna, 2 ... Tuner, 3 ... Demodulator, 4 ... MPEG decoder, 5 ... Audio decoder, 6 ... Video decoder, 7 ... Data broadcast decoder, 8 ... Output processing part, 9 ... Presentation processing part, 10 ... Data Broadcast content analysis unit, 10a ... default cursor position acquisition unit, 10b ... remote control key assignment acquisition unit, 11 ... pseudo remote control unit, 11a ... screen area division unit, 11b ... relative position determination unit, 11c ... remote control key replacement unit, 11d ... Decision key display part, 12 ... Touch panel control part, 12a ... Position designation part, 13 ... CPU, 14 ... Speaker, 15 ... Display, 16 ... Touch panel, 17 ... Storage part, 17a ... Cursor position holding part, 17b ... Previous time Touch position holding part.

Claims (5)

In a broadcast receiving device equipped with a touch panel,
Receiving means for receiving a data broadcast signal including a plurality of objects to be operated by the remote control;
Display means for displaying the data broadcast signal received by the receiving means on the screen;
A screen area dividing means for dividing the screen area of the data broadcast displayed by the display means vertically and horizontally with the position of the object currently selected by the cursor as a reference point;
Relative position determination means for determining a relative positional relationship between the designated position and the reference point when an arbitrary position in the area divided by the screen area dividing means is designated through the touch panel;
Based on the relative positional relationship determined by the relative position determining means, signal generating means for generating a key signal corresponding to the area where the designated position exists;
A broadcast receiving apparatus comprising: control means for moving the cursor to a position of an object to be selected next in accordance with a key signal generated by the signal generating means.   2. The broadcast receiving apparatus according to claim 1, wherein the screen area dividing means divides the screen area according to the number of direction keys actually assigned to the object currently selected by the cursor.   The screen area dividing means divides the screen area with a predetermined position on the screen as a reference point when a cursor is not displayed on the screen of the data broadcast. Broadcast receiving device. A determination operation determination means for determining whether or not an operation with a determination key is necessary in accordance with the movement of the cursor;
And a determination key display means for displaying a button for generating a determination key signal on the screen when it is determined by the determination operation determination means that an operation with the determination key is necessary. The broadcast receiving apparatus according to claim 1. A storage means for storing the position designated through the touch panel and the key signal generated at the position in association with each other;
2. The signal generating means generates a key signal associated with the position when the position designated through the touch panel is the same as the position stored in the storage means. The broadcast receiving apparatus described.

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