CN103546818B - The focus control method of the list display interface of intelligent television and device - Google Patents

Abstract

The present invention provides a focus control method and device for a list display interface of a smart TV, wherein the method includes: receiving a remote control signal and analyzing it; if the remote control signal is to move the display focus to a target list item, then determine the target The sequence number of list items in the entire list; according to the total number of list items and the maximum number of list items that can be accommodated in the visible window of the interface, determine whether the sequence number of the target list item meets the first preset condition; if yes, set The display focus is fixed at the center position of the visible window of the interface, and the target list item is scrolled to the position where the display focus is located for display. Using the focus control method of the list display interface provided by the present invention avoids the visual fatigue caused by the continuous change of the focus of the user's sight as the display focus moves, and improves the visual experience of the smart TV user.

Description

Focus control method and device for list display interface of smart TV

technical field

The present invention relates to the technical field of smart TVs, in particular to a focus control method and device for a list display interface of smart TVs.

Background technique

With the widespread intelligence of mobile phones and tablet computers, smart TVs are gradually entering our lives. Smart TVs, like smart phones, have a fully open platform and are equipped with an operating system. Users can install and uninstall software, games and other programs by themselves. Such programs may be provided by smart TV manufacturers or third-party service providers. Provided, through such programs, the functions of smart TVs can be continuously expanded. In addition, it is also possible to surf the Internet through a network cable or a wireless network. That is, a real smart TV can obtain program content from various channels such as the Internet, AV equipment, and PC, and through an easy-to-use integrated operation interface, the content most needed by consumers can be clearly displayed on the large screen through simple operations .

The main interface of an existing smart TV is usually composed of an orderly arrangement of static icons, as shown in FIG. , the icons 13 are evenly placed on the interface 12 , and the size of the interface 12 cannot be larger than the frame of the display screen 11 . If the current interface 12 cannot display all the icons 13 , multiple interfaces 12 can be set, and the user can view more icons by turning down a page card 12 .

When the user clicks on an icon 13 through the remote control, the detailed information interface corresponding to the icon will be entered, and the detailed information window associated with the icon will be displayed. For example, in the interface shown in Figure 1, when the user wants to view the play record in the interface 12, he needs to click the icon 13 of "play record" through the remote control, and then enter the corresponding display play record list item of the icon 13. The visible window of the interface, in which the user can search for historical playback records.

During the research and practice of the prior art, the inventors of the present invention have found that the prior art has the following problems:

When the interface of the smart TV displays a window with many list items arranged horizontally or vertically, such as the detailed information window of the above-mentioned playback record icon, the user presses the up and down keys or the left and right keys on the remote control to control the focus to move up and down, and then Highlight the selected list item. In the list item selection process, if the interface can display all list items, then the list item selection process is: under the control of the remote control button moving up and down, the focus moves, the list item does not move, and the user's line of sight follows the movement of the focus. move. In this case, since the user's visual attention changes continuously with the movement of the focus, following the movement of the focus for a long time will cause visual fatigue, causing the user to feel confused about the system and affecting the user experience.

If all list items cannot be displayed in a visible window of the interface, when the focus moves to the bottom of the window, if the user also controls the remote control to move down, the focus will not move and the list items will move up. At this time, although the user's visual attention does not need to change with the movement of the focus, since the visual attention has been kept at the bottom of the visible window at this time, maintaining this posture for a long time will cause cervical fatigue and also affect the user. visual experience.

Therefore, how to solve the shortcomings of focus movement in the list display interface of the existing smart TV has become a problem that needs to be solved most at present.

Contents of the invention

The technical problem to be solved by the present invention is to provide a focus control method and device for a list display interface of a smart TV. When there are many list options in an application program, when the user uses a remote control to control the list options to move up and down, the display focus It is fixed at the preset position of the visible window of the interface, avoiding frequent changes of the user's visual focus as the focus moves, and enhancing the visual experience of smart TV users.

In order to solve the above problems, on the one hand, a focus control method of a list display interface of a smart TV is provided, the list display interface is used to display at least two selectable list items in the same row/column, each list item arrangement, and the total number of list items exceeds the maximum number of list items that can be accommodated in the visible window of the interface; including:

Receive and analyze the control signal of the remote control;

If the remote controller control signal is to move the display focus to the target list item, then determine the sequence number of the target list item in the entire list;

According to the total number of list items and the maximum value of the number of list items that can be accommodated in the visible window of the interface, it is judged whether the sequence number of the target list item satisfies the first preset condition;

If so, the display focus is fixed at the center position of the visible interface window, and the target list item is scrolled to the position where the display focus is located for display.

Optionally, the fixing the display focus at the center position of the visible window of the interface includes:

Fix the display focus on the specified column of the same row, or the specified row of the same column.

Optionally, assuming that the total number of list items in the list is m, the sequence number of the target list item is x, the maximum number of list items that can be accommodated in the visible window of the interface is n, and the specified The order number of the column or the specified row of the same column in the number of list items that can be accommodated in the visible window is y, and the condition is satisfied: 2≤y≤n; conditions, specifically:

Judging whether the sequence number of the target list item is x satisfies: y≤x≤m-(n-y).

Optionally, if the maximum value n of the number of list items that can be accommodated in the visible window of the interface is an even number, then y=n/2.

Optionally, if the maximum value n of the number of list items that can be accommodated in the visible window of the interface is an odd number, then y=(n+1)/2.

Optionally, also include:

According to the total number of list items and the maximum value of the number of list items that can be accommodated in the visible window of the interface, it is judged whether the sequence number of the target list item satisfies the second preset condition;

If so, move the display focus to the actual position of the target list item in the visible window.

Optionally, assuming that the total number of list items in the list is m, the sequence number of the target list item is x, the maximum number of list items that can be accommodated in the visible window of the interface is n, and the specified The sequence number of the column or the specified row of the same column in the number of list items that can be accommodated in the visible window is y, and the condition is met: 2≤y≤n; conditions, specifically:

Judging whether the sequence number of the target list item is x satisfies: 1≤x≤y-1; or m-(n-y)≤x≤m.

On the other hand, a focus control device for a list display interface of a smart TV is provided, wherein the list display interface is used to display at least two selectable list items in the same row/column, and each list item is selected according to a predetermined arrangement, and the total number of list items exceeds the maximum number of list items that can be accommodated in the visible window of the interface;

include:

An analysis unit is used for receiving and analyzing the control signal of the remote controller;

A target list item determination unit, configured to determine the sequence number of the target list item when the remote controller control signal is to move the display focus to the target list item;

The first judging unit is used to judge whether the sequence number of the target list item satisfies the first preset condition according to the total number of list items and the maximum value of the number of list items that can be accommodated in the visible window of the interface;

The first execution unit is configured to fix the display focus at the center position of the visible window when the judgment result of the first judgment unit is yes, and scroll the target list item to the position where the display focus is located displayed at the location.

Optionally, the first executing unit is specifically configured to fix the display focus on the specified column in the same row or the specified row in the same column, and scroll the target list item to the position where the display focus is located to display.

Optionally, also include:

The second judging unit is used to judge whether the sequence number of the target list item satisfies the second preset condition according to the total number of list items and the maximum value of the number of list items that can be accommodated in the visible window of the interface;

The second execution unit is configured to move the display focus to the actual position of the target list item in the visible window when the judgment result of the second judgment unit is yes.

Compared with the prior art, one of the above technical solutions has the following advantages:

The focus control method of the list display interface of the smart TV provided by the present invention, when the user needs to continuously move up and down or move left and right to find the target list item, when the target list item meets the first preset condition, the display focus can be fixed The fixed position of the visible window of the interface is like the specified column of a row or the specified row of the same column. Scrolling the list makes the target list item displayed at the fixed position of the display focus, effectively avoiding the display focus and the target list item moving together in the prior art The resulting visual fatigue enhances the visual experience of smart TV users.

Description of drawings

FIG. 1 is a schematic diagram of a display main interface of a smart TV in the prior art;

Figure 2-1 to Figure 2-5 show schematic diagrams of prior art list items displayed in a visual window;

3 is a flow chart of Embodiment 1 of a focus control method of a list display interface of a smart TV according to the present invention;

Figure 4-1 to Figure 4-4 show the schematic diagrams of list items displayed in the visible window according to the embodiment of the present invention;

Fig. 5 is a flow chart of another optional embodiment of the focus control method of the list display interface of the smart TV in the present invention;

6 is a structural block diagram of Embodiment 1 of a focus control device for a list display interface of a smart TV according to the present invention;

Fig. 7 is a structural block diagram of another alternative embodiment of the method for controlling the focus of the list display interface of the smart TV according to the present invention.

detailed description

In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

In order to better understand the technical solutions provided by the embodiments of the present invention, and to better compare them with the technical solutions of the embodiments of the present invention, the implementation solutions in the prior art will be briefly introduced below by way of examples.

As shown in Figure 2-1, assume that the visible window of an application program displays vertically arranged list items, and a maximum of 6 list items can be accommodated within the visible range of the window. When the user moves the focus to the list item for the first time, the first list item will be highlighted, indicating that the list item is in the selected state and obtains the operation focus. At this time, it is equivalent to the operation focus being at the position of "list item 1". As shown in Figure 2-2; and when the user issues an instruction to move to the next list item by operating the remote control, the operation focus will move to the position where "List Item 2" is located, as shown in Figure 2-3. When the user continuously sends out multiple "move to the next list item" instructions, the operation focus will be moved to the position where "list item 6" is located, as shown in Figure 2-4, that is, the operation focus has been moved to The bottom of the visible window of the interface. At this time, if the user continues to issue the instruction of "move to the next list item", and there are other list items in the current application, the operation focus will be fixed at the bottom of the window, and the list items will scroll up at the same time. For example, referring to Figure 2-5, compared to Figure 2-4, the position of the operation focus remains unchanged, but the selected list item has changed to List Item 7, and at the same time, List Item 1 has been moved out of the window's view scope. After continuing to issue the "move to the next list item" command, similar to the above situation, the focus position of the operation remains unchanged, and the list item scrolls up. Therefore, as described in the background art, the user's line of sight will stay at the bottom of the window for a long time. The embodiment of the present invention is just an improvement on the above situation.

First of all, it needs to be explained that in the embodiment of the present invention, the involved execution subjects include the remote control and the smart TV, and the implementation process of the technical solution of the present invention is an interactive process between the two. Wherein, the remote controller is used to send signals by pressing keys or sliding the touch screen. The smart TV is used to receive the remote control signal, and perform corresponding operations on the current application program according to the remote control signal. The application program involved in the embodiment of the present invention is an application program loaded on a smart TV and has a list display interface, such as a file manager, a channel list, and the like. The list display interface of the application is used to display at least two selectable list items in the same row or column, each list item is arranged in a preset order, and the total number of list items exceeds the list that can be accommodated in the visible window of the interface The maximum number of items. For ease of description, the following introduces the embodiments of the present invention from the perspective of a smart TV.

Referring to FIG. 3 , it shows a flow chart of Embodiment 1 of a focus control method for a list display interface of a smart TV according to the present invention. include:

S301: Receive and analyze the control signal of the remote controller;

The above-mentioned remote control signal can be sent by the user pressing a physical button of a common remote control, or by a remote control controlled by the user sliding the touch screen. The smart TV application program receives the signal from the remote control and analyzes it. The result of the analysis can be to move a list item up or down, or to move a list item to the left or right, or to display the link of the list item. The next displayed page of list item details.

S302: Determine whether the analysis result of the remote control signal is to move the display focus to the target list item; if yes, execute the next step; if no, end the process.

If it is defined that in the display interface of the application program, the list item where the focus is located before executing the remote control signal is the current list item. For a list arranged vertically in the visible window, the above-mentioned target list item may be the previous list item or the next list item. For a list arranged horizontally in the visible window, the above-mentioned target list item may be a list item on the left or a list item on the right.

S303: Determine the sequence number of the target list item in the entire list;

The sequence number above is the sequence number of the target list item in the total number of list items. The above total number of list items is the total number of list items in the list displayed in the visible window of the above interface.

That is to say, if there are many list items for users to choose in an application, the number of these list items is determined, and the order in which each list item is displayed is also determined. Therefore, it is equivalent to each list item having its own number. The number belongs to the inherent property of the list item itself, and will not change due to changes in factors such as the operation focus. Therefore, after the target list item is determined, the sequence number of the target list item in the total number of list items can be determined. For example, if the current list item is the 4th item, after receiving the control signal of "moving to the next list item", the sequence number of the target list item should be the 5th item.

S304: According to the total number of list items and the maximum number of list items that can be accommodated in the visible window of the interface, determine whether the sequence number of the target list item meets the first preset condition; if yes, perform the next step; if not, perform other steps operate.

S305: Fix the display focus at the center position of the visible window of the interface, and scroll the target list item to the position where the display focus is located for display.

That is to say, in the embodiment of the present invention, in order to avoid the user's line of sight staying at the bottom of the screen for a long time, certain conditions can be set in advance. The focus is fixed at the central position of the visible window of the interface, so that the user's line of sight can be concentrated on the central position most of the time, thereby alleviating the user's cervical fatigue to a certain extent. Wherein, the so-called center position may generally be a specified row of the column where the list item is located, or a specified column of the row where the list item is located.

Specifically, for the list items arranged horizontally in the visible window of the interface, the display focus is fixed on the specified column in the same row. The specified column in the same row can be the column where any optional list item is located after excluding the first column and the last column in the visible window of the interface, and can be set according to user experience feedback data, such as what position is most ergonomic to make the cervical spine the most Comfort is not limited to the middle position of the viewing window.

Similarly, for the list items arranged vertically in the visible window of the interface, the display focus is fixed on the specified row in the same column. The specified row in the same column can be the row where any optional list item is located after excluding the first row and the last row in the visible window of the interface, and can be set according to user experience feedback data, and is not limited to the middle position of the visible window.

Specifically in which column can be pre-defined. For example, each list item is a row if the list items are displayed in the same column, as shown in Figure 2-1. At this time, the centering position can be determined as the third row, and so on. Certainly, if each list item is displayed in the same row, then each list item is a column, which is similar to the foregoing situation, and will not be described in detail here. In short, after the center position is defined, a judgment condition can be generated based on the total number of list items and the maximum number of list items that can be accommodated in the visible window of the interface. After that, for each target list item, as long as its sequence number If the judging condition is satisfied, the display focus can be fixed at the center position, and the target list item is scrolled to the center position so that it coincides with the position of the display focus.

In order to better illustrate the above-mentioned judgment conditions in the embodiment of the present invention, a specific implementation process in the embodiment of the present invention will be described in detail below through a specific example.

Assuming that the total number of list items is 15, they are arranged vertically in the visible window, that is, displayed in the same column, and the maximum number of list items that can be accommodated in the visible window is 6 items, and the pre-defined centering position is assumed to be Line 4. Then in the embodiment of the present invention, in the initial state, the display focus can still appear on the row where the first list item is located by default, as shown in Figure 2-2, when moving to the next list item, the display focus is still moved to The row of list item 2. After the display focus is moved to the fourth row, if it is necessary to continue to move to the next list item, that is to say, the sequence number of the target list item is determined to be 5, then the target list item numbered 5 may meet the first predetermined list item. At this time, the display focus can be fixed at the position of the fourth line, and at the same time, the list item is scrolled up so that the list item 5 appears at the position of the display focus, as shown in Figure 4-1. At the same time, the list item 5 gets the display focus, that is, if the user presses an operation button such as "OK" on the remote control to issue an instruction, the smart TV side will display the detailed interface corresponding to the list item 5. Of course, when list item 5 scrolls up, list item 1 will move out of the interface visible window, and at the same time, list item 7 will enter the interface visible window. When continuing to move to the next list item, the position of the display focus is still fixed on the 4th row, and the target list item is scrolled up so that it coincides with the position of the display focus and obtains the display focus, while it was in the first row before The listed list items are moved out of the interface visible window, and new list items enter the bottom line of the interface visible window. After line 13 gets the display focus, lines 14 and 15 also enter the visible window of the interface, as shown in Figure 4-2. Since there are a total of 15 list items, it is equivalent to that all the list items have been displayed in the visible window of the interface. At this time, when the user needs to move to the next list item, the display focus can be directly moved to the list The line where item 14 is located, as shown in Figure 4-3, that is, the display focus appears on line 5, and when moving to the next list item, you can directly move the display focus to the last line, which is the same as the position of list item 15 overlap, as shown in Figure 4-4.

In short, in the above example, when the user selects a list item, for the 10 list items with sequential numbers from 4 to 13, the display focus is obtained on the fourth line, so the user's implementation can be fixed for a long time At the central position of the visible window, compared with corner positions such as the bottom end of the visible window, the eye fatigue of the user can be reduced.

From the above example, it can be seen that the setting of specific judgment conditions is related to the definition of the center position, the total number of list items, and the maximum number of list items that can be accommodated in the visible window. Therefore, it can be based on the above factors. Setting of judgment conditions. As an optional embodiment of the present invention, assume that the total number of list items in the display list of the current interface visible window is m; the sequence number of the above-mentioned target list items is x; the maximum number of list items that can be accommodated in the above-mentioned interface visible window is n; the sequence number of the specified column of the same row or the specified row of the same column in the number of list items that can be accommodated in the visible window is y, and y satisfies the condition: 2≤y≤n-1. Then, in combination with the foregoing, the specifically set judgment condition may be: y≤x≤m-(n-y). That is to say, in the above step S304, it is judged whether the sequence number of the target list item satisfies the first preset condition, specifically:

Determine whether the sequence number x of the target list item satisfies: y≤x≤m-(n-y).

Of course, in practical applications, generally, the center position can be directly positioned as the row or column in the middle position. That is, if the maximum value n of the number of list items that can be accommodated in the visible window of the interface is an even number, in the visible window of the interface, display the sequence number y of the specified column of the same row or the specified row of the same column with a fixed focus, satisfying the condition : y=n/2.

If the maximum value n of the number of list items that can be accommodated in the visible window of the interface is an odd number, in the visible window of the interface, display the sequence number y of the specified column of the same row or the specified row of the same column with a fixed focus, satisfying the conditions: y=(n+1)/2.

Referring to FIG. 5 , it shows a schematic flowchart of another optional embodiment of a method for controlling the focus of a list display interface of a smart TV according to the present invention. On the basis of the first embodiment shown in FIG. 3 , it also includes:

S306: According to the total number of list items and the maximum number of list items that can be accommodated in the visible window of the interface, determine whether the sequence number of the target list item satisfies the second preset condition; if yes, execute the next step.

Optionally, assume that the total number of list items in the list is m, the sequence number of the target list item is x, the maximum number of list items that can be accommodated in the visible window of the interface is n, and the specified column of the same row or the specified row of the same column are in The sequence number in the number of list items that can be accommodated in the visible window is y, and the condition is satisfied: 2≤y≤n. Then in the above step S306, it is judged whether the sequence number of the target list item satisfies the second preset condition, specifically:

Judging whether the sequence number of the target list item is x satisfies: 1≤x≤y-1; or m-(n-y)≤x≤m.

S307: Move the display focus to the actual position of the target list item in the visible window.

The above step S306 and step S307 are actually other operation steps described in step S304 in the first embodiment.

Below, taking the channel list as an example, the above-mentioned technical solution of the present invention will be described in detail in combination with specific numerical values, assuming that the total number of list items in the channel list is m=20; the sequence number of the target list items is x; the channel list items can be accommodated in the visible window of the interface The maximum number n=5.

If the channel list is vertically arranged in the visible window of the interface, set the sequence number y=3 in the number of list items that the visible window can hold in the specified row whose focus is fixed in the same column of the visible window. Then, when x=1, 2, 3, 18, 19, 20, the display focus moves to the actual position of the list item in the visible window of the interface; when 4≤x≤17, the target list item is scrolled to where the display focus is fixed The 3rd line of the display.

Similarly, if the channel list is horizontally arranged in the visible window of the interface, the sequence number y=3 of the designated column in the same row of the visible window with the focus fixed on the number of list items that can be accommodated in the visible window is the third column. Then, when x=1, 2, 3, 18, 19, 20, the display focus moves to the actual position of the list item in the visible window; when 4≤x≤17, the target list item is scrolled to where the display focus is fixed Column 3 is displayed.

Regarding the second embodiment, there are corresponding embodiments in the examples shown in Fig. 4-1 to Fig. 4-4 , so reference may be made to each other.

For the aforementioned method embodiments, for the sake of simple description, they are expressed as a series of action combinations, but those skilled in the art should know that the present invention is not limited by the described action sequence, because according to the present invention , certain steps may be performed in other order or simultaneously.

Secondly, those skilled in the art should also know that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily required by the present invention.

Corresponding to the embodiment of the focus control method for the list display interface of the smart TV described above, an embodiment of the focus control device for the list display interface of the smart TV is also provided. A detailed description will be given below in conjunction with the accompanying drawings.

Referring to FIG. 6 , it shows a structural block diagram of Embodiment 1 of a focus control device for a list display interface of a smart TV according to the present invention, including:

An analysis unit 41, configured to receive and analyze the remote control control signal;

A list item determination unit 42, configured to determine the sequence number of the target list item when the remote controller control signal is to move the display focus to the target list item;

The first judging unit 43 is used to judge whether the sequence number of the target list item satisfies the first preset condition according to the total number of list items and the maximum value of the number of list items that can be accommodated in the visible window of the interface;

The first executing unit 44 is configured to fix the display focus at the center position of the visible window of the interface when the judgment result of the first judging unit 43 is yes, and scroll the target list item to the position where the display focus is located. show.

Optionally, the first execution unit 44 is specifically configured to fix the display focus on a specified column in the same row or a specified row in the same column, and scroll the marked list item to a position where the display focus is located for display.

Further, it is assumed that the total number of list items in the interface window display list is m, the sequence number of the target list item is x, the maximum number of list items that can be accommodated in the visible window of the interface is n, and the specified column of the same row or the number of the same column The sequence number of the specified line in the number of list items that can be accommodated in the visible window is y, and the condition is satisfied: 2≤y≤n. Then the first judging unit 43 is specifically used to judge whether the sequence number of the target list item is x according to the total number of list items and the maximum value of the number of list items that can be accommodated in the visible window of the interface: y-1≤x≤m- (n-y).

If the maximum value n of the number of list items that can be accommodated in the visible window of the interface is an even number, then y=n/2.

If the maximum value n of the number of list items that can be accommodated in the visible window of the interface is an odd number, then y=(n+1)/2.

Referring to FIG. 7 , it shows a structural block diagram of another embodiment of the focus control device of the list display interface of the smart TV of the present invention. On the basis of the first embodiment shown in FIG. 4 , it also includes:

The second judging unit 45 is configured to judge whether the sequence number of the target list item satisfies the second preset condition according to the total number of list items and the maximum number of list items that can be accommodated in the visible window of the interface.

In this embodiment, it is assumed that the total number of list items in the display list of the interface display window is m, the sequence number of the target list item is x, the maximum number of list items that can be accommodated in the visible window of the interface is n, and the specified column of the same row or the same The order number of the designated row in the visible window is y in the number of list items that can be accommodated in the visible window, and the condition is satisfied: 2≤y≤n; then the second judging unit 45 is specifically used to determine whether the order number of the target list item is x. : 1≤x≤y-1; or m-(n-y)≤x≤m.

The second execution unit 46 is configured to move the display focus to the actual position of the target list item in the visible window when the determination result of the second determination unit 45 is yes.

In summary, with the focus control method and device of the list display interface provided by the embodiments of the present invention, when the user needs to continuously move up, down, left, and right to find the target list item, if the target list item meets the first preset Setting conditions, the display focus can be fixed at the fixed position of the visible window of the interface, such as the specified column of a row or the specified row of the same column, and the scrolling list makes the target list item displayed at the fixed position of the display focus, which effectively avoids the problem in the prior art. The visual fatigue caused by the movement of the display focus and the target list items together, as well as the cervical discomfort caused by the user's eyesight concentrating on the bottom of the display for a long time, enhance the visual experience of smart TV users.

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other. As for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and for the related parts, please refer to the part of the description of the method embodiment.

The method and device for controlling the focus of a smart TV list display interface provided by the present invention have been introduced in detail above. In this paper, specific examples are used to illustrate the principle and implementation of the present invention. The description of the above embodiments is only It is used to help understand the method of the present invention and its core idea; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation and scope of application. In summary, this The content of the description should not be construed as limiting the present invention.

Claims (8)

1. A focus control method of a list display interface of a smart TV, wherein the list display interface is used to display at least two optional list items in the same row/column, and each list item is arranged in a preset order , and the total number of list items m exceeds the maximum value n of the number of list items that can be accommodated in the visible window of the interface; including: Receive and analyze the control signal of the remote control; If the remote controller control signal is to move the display focus to the target list item, then determine the sequence number x of the target list item in the entire list; According to the total number m of list items and the maximum value n of the number of list items that can be accommodated in the visible window of the interface, it is judged whether the sequence number x of the target list item satisfies the first preset condition; If so, fixing the display focus at the center position of the visible window of the interface, and scrolling the target list item to the position where the display focus is located for display; Wherein, the sequence number of the fixed focus position in the number of list items that can be accommodated in the visible window is y, and the condition is satisfied: 2≤y≤n; the first preset condition is specifically: the sequence number of the judgment target list item is Whether x satisfies: y≤x≤m-(n-y). 2. The method according to claim 1, wherein said fixing the display focus at the center position of the visible window of the interface comprises: Fix the display focus on the specified column of the same row, or the specified row of the same column. 3. The method according to claim 1 or 2, wherein if the maximum value n of the number of list items that can be accommodated in the visible window of the interface is an even number, then y=n/2. 4. The method according to claim 1 or 2, wherein if the maximum value n of the number of list items that can be accommodated in the visible window of the interface is an odd number, then y=(n+1)/2. 5. The method according to claim 1 or 2, further comprising: According to the total number m of list items and the maximum value n of the number of list items that can be accommodated in the visible window of the interface, it is judged whether the sequence number x of the target list item satisfies the second preset condition; If so, move the display focus to the actual position of the target list item in the visible window; the second preset condition, specifically: determine whether the sequence number of the target list item is x and satisfy: 1≤x≤y-1; or m -(n-y)≤x≤m. 6. A focus control device for a list display interface of a smart TV, characterized in that the list display interface is used to display at least two optional list items in the same row/column, and each list item is arranged in a preset order , and the total number m of list items exceeds the maximum value n of the number of list items that can be accommodated in the visible window of the interface; include: An analysis unit is used to receive and analyze the control signal of the remote controller; A target list item determination unit, configured to determine the sequence number x of the target list item when the remote controller control signal is to move the display focus to the target list item; The first judging unit is used to judge whether the sequence number x of the target list item satisfies the first preset condition according to the total number of list items and the maximum value n of the number of list items that can be accommodated in the visible window of the interface; The first execution unit is configured to fix the display focus at the center position of the visible window when the judgment result of the first judgment unit is yes, and scroll the target list item to the position where the display focus is located display at the location; Wherein, the sequence number of the fixed focus position in the number of list items that can be accommodated in the visible window is y, and the condition is satisfied: 2≤y≤n, the first preset condition is specifically: the sequence number of the target list item is determined to be Whether x satisfies: y≤x≤m-(n-y). 7. The device according to claim 6, wherein the first execution unit is specifically configured to fix the display focus on the specified column of the same row or the specified row of the same column, and list the target The item scrolls to the position where the display focus is located for display. 8. The device according to claim 6 or 7, further comprising: The second judging unit is used to judge whether the sequence number of the target list item satisfies the second preset condition according to the total number of list items and the maximum value of the number of list items that can be accommodated in the visible window of the interface; The second executing unit is configured to move the display focus to the actual position of the target list item in the visible window when the judgment result of the second judging unit is Yes; The second preset condition is specifically: judging whether the sequence number of the target list item is x satisfies: 1≤x≤y-1; or m-(n-y)≤x≤m.