TWI756723B - A method for recognizing false touches on a foldable touch display device, a foldable touch display device, and an information processing device - Google Patents

Abstract

The present invention mainly discloses a method for recognizing false touches on a stack screen for a foldable touch display device, which is applied to an electronic device having a foldable touch display device, and is included in the foldable touch display device. A control circuit of the foldable touch display screen is executed to identify a stack of false touch patterns on the foldable touch display screen. In the case of the accidental touch of the stacked screen, the control circuit executes an identification procedure of the accidental touch range of the stacked screen, so that after the accidental touch of the stacked screen is determined, no touches in the accidental touch range of the stacked screen are avoided. The control reference data is used to perform data compensation, so as to ensure that when the user performs at least one touch operation on any touch display screen, the touch display screen will still perform corresponding actions according to the touch operation. Further, when it is determined that the foldable touch display device is in a screen-up state, the control circuit restarts the data compensation for the non-touch reference data.

Description

A method for recognizing false touches on a foldable touch display device, a foldable touch display device, and an information processing device

The present invention relates to the technical field of foldable touch display devices, and more particularly, to a method for recognizing false touches on overlapping screens for foldable touch display devices.

It is known that a touch display device is one of the indispensable components in mobile electronic devices such as tablet computers, smart phones, all-in-one computers, and smart watches. As the sales growth of large-size smartphones with high screen ratios has slowed down, the emergence of foldable smartphones has subverted the traditional smartphone model. It should be known that when the foldable smart phone is folded, the two touch display screens of the foldable smart phone are closely attached to each other in a screen-to-screen manner. However, the folding method of the aforementioned foldable smart phone may cause the touch display screen to have a false touch mode.

When the touch function is normally executed, the control circuit will first collect a frame of non-touch raw data (RawData) from a plurality of touch sensors (ie, capacitors) integrated in the touch display screen and process it into a single frame. Frame no-touch basic data (BaseData), then collect multiple frames of touch detection data from the plurality of touch sensors in time, and then calculate the difference data between the no-touch base data and each frame of touch detection data , and the touch sensing value is obtained after data processing. In order to ensure touch sensitivity and touch accuracy, the control circuit will collect a frame of non-touch raw data (RawData) immediately after the screen is turned on. After a difference operation is performed on the non-touch basic data to obtain a frame of difference data (DifData), the control circuit uses a corresponding algorithm to compensate and correct the non-touch basic data.

However, for foldable smartphones, some problems occur when compensating for the touchless base data according to the existing algorithm. FIG. 1 is a chart showing a frame of difference data measured by a conventional foldable smart phone in a folded state. As shown in FIG. 1 , when the two touch display screens are close to each other in a screen-to-screen manner without turning off the power of the screen, the value of the raw touch detection data (RawData) collected by the control circuit will be larger. Therefore, the difference data map (DifData map) obtained by performing a difference operation on the non-touch basic data and the touch detection raw data will have a large area of numerical protrusions. It is worth noting that when the foldable smart phone is continuously maintained in the folded state, the control circuit will use an algorithm to compensate the non-touch basic data until the difference data map (that is, the full screen ) are close to or equal to 0.

FIG. 2 is a chart showing a frame of difference data measured when the conventional foldable smartphone is switched from a folded state to a screen-raised state. As shown in FIG. 2 , since the control circuit will continuously use the algorithm to compensate the non-touch basic data when the foldable smartphone is maintained in the folded state, the tracking compensation for the non-touch basic data results in When the foldable smartphone is switched to the screen-up state, a large area of negative value blocks appears in the difference data graph, forming a so-called negative capacitance data block. In this case, when the user performs at least one touch operation on any touch display screen, the touch display screen will not perform corresponding actions according to the touch operation. Therefore, it is necessary for the control circuit to be able to recognize the above-mentioned situation, so as to ensure that the non-touch basic data returns to normal after the screen is lifted, and does not affect the recognition of normal touch operations by the touch display screen.

As can be seen from the above description, there is an urgent need in the art for a new method for identifying false touches on a stack screen for a foldable touch display device.

The main purpose of the present invention is to provide a method for recognizing false touches on a stack screen for a foldable touch display device, which is applied to an electronic device having a foldable touch display device, and is included in the foldable touch display device. A control circuit in the device is executed to recognize that the foldable touch display device is in a folded state or a screen-raised state. When the foldable touch display device is in the folded state, the control circuit executes an identification program for the range of false touches of a stack of screens, so that after the range of false touches of the stack of screens is determined, it is not within the range of false touches of the stack of screens The data compensation is performed on the non-touch reference data of the device, thereby ensuring that when the user performs at least one touch operation on any touch display screen, the touch display screen will still perform corresponding actions according to the touch operation. Further, when the foldable touch display device is in the screen-up state, the control circuit restarts the data compensation for the non-touch reference data.

In order to achieve the above object, the present invention proposes an embodiment of the method for recognizing false touches on a foldable touch display device, which is applied to a foldable touch display device including two touch display screens, And it is executed by a control circuit to identify a stack of false touch patterns on the touch display screen, including the following steps:

(1) Execute a screen folding identification program on the first difference data of a frame, so as to identify at least one stack of false touch ranges in the first difference data of the frame; wherein, the first difference data of the frame is obtained through Obtained by performing a difference operation on a frame of the first non-touch detection raw data and a frame of non-touch reference data;

(2) In the case of recognizing that the foldable touch display device is in a screen folded state, stop checking a plurality of non-touch benchmarks in the frame of no-touch benchmark data that are within the range of false touches on the stacked screen data to perform a data compensation;

(3) Execute a screen lift recognition procedure on a frame of second difference data, wherein the second difference data of the frame is obtained by executing a frame of the second no-touch detection raw data and the frame of no-touch reference data. difference operation; and

(4) When it is recognized that the foldable touch display device is in a screen-up state, enable the data compensation for the frame without touch reference data.

In one embodiment, the screen folding recognition procedure includes the following steps:

(11) When the maximum difference data of the first difference data of the frame is greater than a maximum threshold and the maximum difference data satisfies a first set operation formula DifMax∈[ThLo, ThHi), calculate a full-screen average difference data;

(12) under the situation that each described first difference data satisfies a second set operation formula DifData∈[DifAverage,+∞), record a count of the plurality of described maximum difference data satisfying the condition;

(13) In the case that each of the first difference data satisfies a third set operation formula DifData∈[DifAverage+(DifMax-DifAverage)/2,+∞), record a plurality of the maximum difference data satisfying the condition the corresponding plural coordinates;

(14) calculating a difference level corresponding to the full-screen average difference data, and calculating a valid difference count threshold;

(15) In the case that the difference level is 0, set a difference level setting value to be equal to the effective difference count threshold, and in the case that the difference level is not 0, the effective difference count threshold performing a division operation with the difference level to obtain the difference level setting value;

(16) The difference data in a column of the first difference data in the frame is not 0, the full-screen average difference data satisfies a fourth set operation formula DifAverage ∈ [AvgTg,+∞) and the count satisfies a fifth In the case of the set operation formula ValidDifCounter∈[ValidDifCntTh,+∞), execute a stack of screen false touch range identification procedures;

(17) In the case that the range of false touches of the stacked screens satisfies a sixth set of arithmetic expression GroupArea∈[DifLevel,+∞), determine the first difference data of the frame containing at least one of the false touch ranges of the stacked screens as a valid frame;

(18) In the case that a continuous frame number of the valid frame is greater than a first continuous frame number threshold, identifying that the foldable touch display device is in the screen folded state; and

(19) marking a plurality of false touch coordinates corresponding to each of the difference data within the range of false touches of the stacked screen;

Wherein, in the screen folding recognition program, DifMax is a variable used to represent the maximum difference data, ThHi is the maximum threshold number, ThLo is a minimum threshold, and Difdata is used to represent the first difference data DifAverage is a variable used to represent the average difference data of the full screen, AvgTg is a threshold value of an average difference data, ValidDifCounter is a variable used to represent the count value of a valid difference data, ValidDifCntTh is a valid difference data The count threshold of , GroupArea is a variable used to represent the range of false touches of the overlapping screen, and DifLevel is a variable used to represent the difference level.

In one embodiment, the overlapping screen false-touch range identification procedure includes the following steps:

(a) selecting a difference coordinate as an initial coordinate in the first difference data of this frame, and simultaneously selecting four adjacent difference coordinates adjacent to the difference coordinate;

(b) In the case that the first difference data corresponding to any one of the four adjacent difference coordinates satisfies a seventh set operation formula DifData∈[DifAverage, +∞), the adjacent difference value coordinates as the new start coordinates;

(c) repeating the step (a) and the step (b) until the selected first difference data cannot satisfy the seventh set of arithmetic expressions; and

(d) recording a range surrounding the plurality of the starting coordinates as the overlapping screen mistouch range.

In one embodiment, after the screen-up recognition procedure is completed to recognize that the foldable touch display device is in the screen-up state, the false-touch coordinate flags of the false-touch coordinates are cleared.

In one embodiment, the screen lift (Cover up) recognition procedure includes the following steps:

(31) In the case where each of the second difference data satisfies an eighth set operation formula DifData∈[-∞, ThLo/3), record a plurality of second difference data satisfying the condition in the frame of the second difference data A count of difference data;

(32) One of the full-screen average difference values of the second difference data in this frame satisfies a ninth set of arithmetic expressions DifAverage∈(-∞,AvgTg), and the counted amount satisfies a tenth set of arithmetic expressions RdtNegCnt∈(-∞, DifLevel) and one of the valid difference data count values of the second difference data of the frame satisfies an eleventh set operation formula ValidDifCounter∈(-∞, DifLevel), the second difference data of the frame is determined to be valid frame; and

(33) In the case that a continuous frame number of the valid frame is greater than a second continuous frame number threshold, identifying that the folding touch display device is in the screen-up state;

Wherein, in the screen lift recognition procedure, DifData is a variable used to represent the second difference data, ThLo is a minimum threshold value, DifAverage is a variable used to represent the full-screen average difference data, AvgTg is a The threshold value of the average difference data, ValidDifCounter is a variable used to represent the count value of a valid difference data, RdtNegCnt is a variable used to represent the count amount, and DifLevel is a variable used to represent the difference level.

In one embodiment, when a touch area of a touch panel of the touch display screen is identified as having the overlapping screen false touch mode, the control circuit defines the touch area as a Untouched area.

In one embodiment, the control circuit is included in an electronic chip, and the electronic chip is selected from any one of the group consisting of a TDDI chip and a touch detection chip.

The present invention also provides a foldable touch display device, which has two touch display screens and a control circuit, the two touch display screens can be folded in such a way that the screens are close to the screen, and the control circuit is used to execute the above-mentioned The invention discloses a method for recognizing false touches on a stack screen for a foldable touch display device.

The present invention also provides an information processing device, which has a foldable touch display device. The foldable touch display device has two touch display screens and a control circuit, and the two touch display screens can be received in a way that the screen is close to the screen. folded, and the control circuit is used to execute the method for recognizing the false touch of a folded screen for a foldable touch display device of the present invention as described above.

In a feasible embodiment, the information processing device is an electronic device selected from a group consisting of a smart phone, a tablet computer and a notebook computer.

In order to enable your examiners to further understand the structure, characteristics, purpose, and advantages of the present invention, drawings and detailed descriptions of preferred embodiments are attached as follows.

FIG. 3 shows a flowchart of a method for recognizing false touches on a stack screen for a foldable touch display device disclosed in the present invention. The method of the present invention is applied to an electronic device having a foldable touch display device, and is executed by a control circuit included in the foldable touch display device, so as to identify that the foldable touch display device is in the A folded state or a screen raised state. In a feasible embodiment, the control circuit is included in an electronic chip, and the electronic chip is selected from a touch and display driver integration (TDDI) chip and a touch detection chip. Form any of the groups. Described in more detail, when the foldable touch display device is in the folded state, the control circuit executes an identification program for the range of false touches of the stack of screens, so that after the range of false touches of the stack of screens is determined, the stack of screens is not Data compensation is performed on the non-touch reference data in the false-touch range, so as to ensure that when the user performs at least one touch operation on any touch display screen, the touch display screen will still operate according to the touch operation. Take corresponding actions. Further, when the foldable touch display device is in the screen-up state, the control circuit restarts the data compensation for the non-touch reference data.

As shown in FIG. 3 , the method for recognizing false touches on a foldable touch display device of the present invention firstly performs step S1 : performing a cover down recognition on a frame of first difference data (DifData) procedure, so as to identify at least a stack of screen false touch ranges in the first difference data of the frame; wherein, the first difference data of the frame is detected by detecting raw data (RawData) and a frame of the first non-touch of the frame. The frame without touch reference data (BaseData) is obtained by performing a difference operation.

）的情況下，紀錄滿足條件的複數個所述最大差值數據的一計數量。其中，DifAverage為用以表示該全屏平均差值數據之變數。When performing the screen folding (Cover down) identification process, first, one of the maximum difference data (DifMax) of the first difference data in the frame is greater than a maximum threshold and the maximum difference data satisfies a first set of arithmetic expressions In the case of DifMax ∈ [ThLo, ThHi), a full-screen average difference data (DifAverage) is calculated. Wherein, Difdata is a variable used to represent the first difference data, DifMax is a variable used to represent the maximum difference data, ThHi is the maximum threshold number, and ThLo is a minimum threshold. Continuing, each of the first difference data satisfies a second set operation formula DifData∈[DifAverage,

), record a count of a plurality of the maximum difference data that satisfies the condition. Wherein, DifAverage is a variable used to represent the full-screen average difference data.

）的情況下，紀錄滿足條件的複數個所述最大差值數據所對應的複數個座標，且接著計算對應於所述全屏平均差值數據的一差值等級(DifLevel)，且計算一有效差值計數閥值。其中，該差值等級係利用數學式DifLevel= DifAverage/10計算而得，且該有效差值計數閥值係利用數學式ValidDifCntTh=

。其中，DifLevel為用以表示所述差值等級之變數，ValidDifCntTh為該有效差值計數閥值，RowMax為該幀第一差值數據之中複數個列差值數據之一最大值者之座標，ColMax為該幀第一差值數據之中複數個行差值數據之一最大值之座標，x∈[1, RowMax]，y∈[1, ColMax]，且z∈[1,

]。Next, when each of the first difference data satisfies a third set operation formula DifData∈[DifAverage+(DifMax-DifAverage)/2,

), record a plurality of coordinates corresponding to the maximum difference data satisfying the condition, and then calculate a difference level (DifLevel) corresponding to the full-screen average difference data, and calculate a valid difference Value count threshold. Wherein, the difference level is calculated using the mathematical formula DifLevel=DifAverage/10, and the valid difference count threshold is calculated using the mathematical formula ValidDifCntTh=

. Wherein, DifLevel is a variable used to represent the difference level, ValidDifCntTh is the effective difference count threshold, RowMax is the coordinate of the maximum value of one of the plurality of column difference data in the first difference data of the frame, ColMax is the coordinate of the maximum value of one of the plurality of row difference data in the first difference data of the frame, x∈[1, RowMax], y∈[1, ColMax], and z∈[1,

].

）以及所述計數量滿足一第五集合運算式ValidDifCounter∈[ValidDifCntTh,

）的情況下，執行一疊屏誤觸範圍辨識程序。其中，AvgTg為一平均差值數據之閥值，且ValidDifCounter為用以表示一有效差值數據計數值之變數。Next, when the difference level (DifLevel) is 0, a set value of the difference level is set equal to the valid difference count threshold, that is, DifLevel=ValidDifCntTh. In addition, when the difference level is not 0, a division operation is performed on the valid difference count threshold and the difference level to obtain the difference level setting value, that is, DifLevel=ValidDifCntTh/DifLevel. Continuing, the difference data (Row _i ) in one column of the first difference data in the frame is not 0, and the full-screen average difference data satisfies a fourth set operation formula DifAverage ∈ [AvgTg,

) and the count satisfies a fifth set of expressions ValidDifCounter∈[ValidDifCntTh,

), execute a stack of screen false-touch range identification procedures. Wherein, AvgTg is a threshold value of an average difference data, and ValidDifCounter is a variable used to represent a count value of a valid difference data.

In one embodiment, the overlapping screen false-touch range identification procedure includes the following steps:

(a) Select a difference coordinate (Row _i , Col _j ) as a starting coordinate in the first difference data of the frame, and simultaneously select four adjacent difference coordinates (Row _i-1) adjacent to the difference coordinate , Col _j ), (Row _i+1 , Col _j ), (Row _i , Col _j-1 ), and (Row _i , Col _j+1 );

）的情況下，以該鄰近差值座標作為新的所述起始座標；(b) The first difference data corresponding to any one of the four adjacent difference coordinates satisfies a seventh set operation formula DifData∈[DifAverage,

), take the adjacent difference coordinate as the new starting coordinate;

(c) repeating the step (a) and the step (b) until the selected first difference data cannot satisfy the seventh set of arithmetic expressions; and

(d) recording a range surrounding the plurality of the starting coordinates as the overlapping screen mistouch range.

）的情況下，將含有至少一所述疊屏誤觸範圍的該幀第一差值數據判定為一有效幀。其中，GroupArea為用以表示該疊屏誤觸範圍之變數。接著，在所述有效幀的一連續幀數大於一第一連續幀數閥值的情況下，辨識該摺疊式觸控顯示裝置處於所述螢幕收摺狀態，並進一步地標示該疊屏誤觸範圍內的各所述差值數據所對應的複數個誤觸座標(令trace標示為1)。After completing the determination of the overlapping screen false-touch range, the screen folding (Cover down) identification procedure is continued, so that a sixth set of arithmetic expressions GroupArea∈[DifLevel,

), the first difference data of the frame containing at least one of the overlapping screen false-touch ranges is determined as a valid frame. Among them, GroupArea is a variable used to represent the range of accidental touches of the stacked screen. Then, in the case that a continuous frame number of the valid frame is greater than a first continuous frame number threshold, it is recognized that the folding touch display device is in the screen folded state, and the folding screen is further marked by mistaken touch A plurality of false touch coordinates corresponding to each of the difference data within the range (let the trace be marked as 1).

As shown in FIG. 3 , the method flow then executes step S2 : in the case of recognizing that the foldable touch display device is in a screen folded state, stop comparing the non-touch reference data (BaseData) in the frame with plural numbers A data compensation is performed on a plurality of non-touch reference data corresponding to the false touch coordinates. To put it simply, for a foldable touch display device including two touch display screens, when the two touch display screens are brought close to each other in a screen-to-screen manner without turning off the power of the screen, the control The raw touch detection data map (RawData map) collected by the circuit will include at least one stack of screen false touch ranges, and the value of the touch detection raw data within the stack of screen false touch ranges will be very large, resulting in A difference data map (DifData map) obtained by performing a difference operation between the touch basic data and the touch detection raw data will have a large area of numerical protrusions.

Therefore, the method of the present invention uses step S1 to find out at least one stack of false touch areas of the screen, and then uses step S2 to identify that the foldable touch display device is in a folded state of the screen to stop checking the frame without A data compensation is performed on a plurality of non-touch reference data corresponding to the plurality of false touch coordinates in the touch reference data (BaseData). At this time, when a touch area of a touch panel of the touch display screen is identified as having the accidental touch of the overlapping screen, the control circuit stops the data compensation so that the overlapping has occurred. The touch area where the screen is accidentally touched is redefined as an untouched area.

FIG. 4 is a chart showing a frame of difference data measured when a foldable touch display device is switched from a folded state to a screen-raised state. As shown in FIG. 4 , in the case of applying the method for recognizing false touches on a foldable touch display device according to the present invention, even if the control circuit detects the collected raw touch detection data (RawData) and the original stored data The touch base data (BaseData) performs a difference value operation to obtain a difference value data map (DifData map), and the difference data map does not have numerical protrusions in at least one area.

As shown in FIG. 3 , the method flow then executes step S3 : performing a cover up identification procedure on a frame of second difference data, wherein the frame of the second difference data is obtained by comparing a frame of second touchless data The control detection raw data (RawData) and the non-touch reference data (BaseData) of the frame are obtained by performing a difference operation. It should be understood that, based on the principle of time-sharing data collection, the first difference data of one frame in this step S1 and the second difference data of one frame in this step S3 refer to the data collected by different frame numbers. Difference data (DifData). Therefore, the first difference data and the second difference data are represented by the same variable DifData in the algorithm.

, ThLo/3）的情況下，紀錄該幀第二差值數據之中滿足條件的複數個第二差值數據之一計數量。其中，其中，在所述螢幕抬起識別程序中，DifData為用以表示該第二差值數據之變數，且ThLo為一最低閥值。In one embodiment, the cover up recognition procedure includes a plurality of steps. First, each of the second difference data satisfies an eighth set operation formula DifData∈[

, ThLo/3), record the count of one of the plurality of second difference data that satisfies the condition in the second difference data of the frame. Wherein, in the screen lift identification procedure, DifData is a variable used to represent the second difference data, and ThLo is a minimum threshold value.

,AvgTg）、該計數量滿足一第十集合運算式RdtNegCnt∈(

, DifLevel）以及該幀第二差值數據之一有效差值數據計數值滿足一第十一集合運算式ValidDifCounter∈(

, DifLevel）的情況下，將該幀第二差值數據判定為一有效幀。其中，DifAverage為用以表示該全屏平均差值數據之變數，AvgTg為一平均差值數據之閥值，ValidDifCounter為用以表示一有效差值數據計數值之變數，RdtNegCnt為用以表示該計數量之變數，且DifLevel為用以表示所述差值等級之變數。最後，在所述有效幀的一連續幀數大於一第二連續幀數閥值的情況下，辨識該摺疊式觸控顯示裝置處於所述螢幕抬起狀態。Next, one of the full-screen average difference values of the second difference data in the frame satisfies a ninth set of arithmetic expressions DifAverage∈(

, AvgTg), the count satisfies a tenth set operation formula RdtNegCnt∈(

, DifLevel) and one of the valid difference data count values of the second difference data of the frame satisfies an eleventh set operation formula ValidDifCounter∈(

, DifLevel), the second difference data of the frame is determined as a valid frame. Among them, DifAverage is a variable used to represent the full-screen average difference data, AvgTg is a threshold of the average difference data, ValidDifCounter is a variable used to represent a valid difference data count value, and RdtNegCnt is used to represent the count amount and DifLevel is a variable used to represent the difference level. Finally, when a continuous frame number of the valid frame is greater than a second continuous frame number threshold, it is identified that the foldable touch display device is in the screen-up state.

After the step S3 is completed, as shown in FIG. 3 , the method flow then executes step S4 : in the case of identifying that the folding touch display device is in a screen-up state, enable the frame without touch reference data. data compensation. It is added that, after the screen lift identification procedure is completed to identify that the foldable touch display device is in the screen lift state, the control circuit restarts the data compensation for the frame without touch reference data before restarting the data compensation It is necessary to clear the false-touch coordinate mark of each of the false-touch coordinates first.

In this way, the above has completely and clearly explained the method for recognizing the false touch of the overlay screen for a foldable touch display device of the present invention; and it can be seen from the above that the present invention has the following advantages:

(1) The present invention discloses a method for recognizing false touches on a stack screen for a foldable touch display device, which is applied to an electronic device having a foldable touch display device, and is included in the foldable touch display device. A control circuit in the display device is executed to recognize that the foldable touch display device is in a folded state or a screen-raised state. When the foldable touch display device is in the folded state, the control circuit executes an identification program for the range of false touches of a stack of screens, so that after the range of false touches of the stack of screens is determined, it is not within the range of false touches of the stack of screens The data compensation is performed on the non-touch reference data of the device, thereby ensuring that when the user performs at least one touch operation on any touch display screen, the touch display screen will still perform corresponding actions according to the touch operation. Further, when the foldable touch display device is in the screen-up state, the control circuit restarts the data compensation for the non-touch reference data.

(2) The present invention also discloses an information processing device, which has a foldable touch display device, the foldable touch display device has two touch display screens and a control circuit, and the two touch display screens can be close to the screen. and the control circuit is used to execute the method for recognizing the false touch of the folding screen for the folding touch display device of the present invention as described above. In a feasible embodiment, the information processing device is an electronic device selected from a group consisting of a smart phone, a tablet computer and a notebook computer.

It must be emphasized that the above-mentioned disclosure in this case is a preferred embodiment, and any partial changes or modifications originating from the technical ideas of this case and easily inferred by those who are familiar with the art are within the scope of the patent of this case. category of rights.

To sum up, regardless of the purpose, means and effect of this case, it shows that it is completely different from the conventional technology, and its first invention is practical, and it does meet the patent requirements of the invention. Society is to pray for the best.

S1: Execute a screen folding recognition program on the first difference data of a frame, so as to identify at least a stack of screen false touch ranges in the first difference data of the frame; wherein, the first difference data of the frame are A frame of the first non-touch detection raw data and a frame of non-touch reference data are obtained by performing a difference operation S2: In the case of recognizing that the foldable touch display device is in a screen folded state, stop comparing a plurality of non-touch reference data in the frame of non-touch reference data within the range of false touches on the stacked screen perform a data compensation S3: Execute a screen lift recognition procedure on a frame of second difference data, wherein the second difference data of the frame is obtained by executing a frame of the second no-touch detection raw data and the frame of no-touch reference data. difference operation S4: In the case of recognizing that the foldable touch display device is in a screen-up state, enable the data compensation for the frame without touch reference data

FIG. 1 is a table diagram of a frame of difference data measured by a conventional foldable smart phone in a folded state; FIG. 2 is a table diagram of a frame of difference data measured when a conventional foldable smartphone is switched from a folded state to a screen-raised state; FIG. 3 is a flowchart of a method for recognizing a false touch on a stack screen for a foldable touch display device disclosed by the present invention; and 4 is a table diagram of a frame of difference data measured when a foldable touch display device is switched from a folded state to a screen-raised state.

S1: Execute a screen folding recognition program on the first difference data of a frame, so as to identify at least a stack of screen false touch ranges in the first difference data of the frame; wherein, the first difference data of the frame are A frame of the first non-touch detection raw data and a frame of non-touch reference data are obtained by performing a difference operation

S2: In the case of recognizing that the foldable touch display device is in a screen folded state, stop comparing a plurality of non-touch reference data in the frame of non-touch reference data within the range of false touches on the stacked screen perform a data compensation

S3: Execute a screen lift recognition procedure on a frame of second difference data, wherein the second difference data of the frame is obtained by executing a frame of the second no-touch detection raw data and the frame of no-touch reference data. difference operation

S4: In the case of recognizing that the foldable touch display device is in a screen-up state, enable the data compensation for the frame without touch reference data

Claims (10)

A method for recognizing false touches on a stack screen for a foldable touch display device is applied to a foldable touch display device including two touch display screens, and is executed by a control circuit to detect the touch display The screen recognizes a stack of false touch patterns, including the following steps: (1) Execute a screen folding identification program on the first difference data of a frame, so as to identify at least one stack of false touch ranges in the first difference data of the frame; wherein, the first difference data of the frame is obtained through Obtained by performing a difference operation on a frame of the first non-touch detection raw data and a frame of non-touch reference data; (2) In the case of recognizing that the foldable touch display device is in a screen folded state, stop comparing a plurality of non-touch reference data in the frame of non-touch reference data within the range of false touches on the stacked screen perform a data compensation; (3) Execute a screen lift recognition procedure on a frame of second difference data, wherein the second difference data of the frame is obtained by executing a frame of the second no-touch detection raw data and the frame of no-touch reference data. difference operation; and (4) When it is recognized that the foldable touch display device is in a screen-up state, enable the data compensation for the frame without touch reference data. According to the method for recognizing false touches on overlapping screens for a folding touch display device according to claim 1, the screen folding recognition program includes the following steps: (11) In the frame, one of the largest difference data of the first difference data is greater than In the case of a maximum threshold and the maximum difference data satisfies a first set operation formula DifMax∈[ThLo, ThHi), calculate a full-screen average difference data; (12) When each of the first difference data satisfies a The second set of expressions DifData∈[DifAverage,

), record a count of a plurality of the maximum difference data satisfying the condition; (13) When each of the first difference data satisfies a third set of arithmetic expressions DifData∈[DifAverage+(DifMax-DifAverage) /2,

(14) calculate a difference level corresponding to the full-screen average difference data, and calculate a valid difference count Threshold value; (15) Under the condition that the difference value level is 0, make a difference value level set value equal to the effective difference value count threshold value, and in the case that the difference value level is not 0, the effective difference value value A division operation is performed between the count threshold and the difference level to obtain the set value of the difference level; (16) The difference data in a column of the first difference data of the frame is not 0, and the full-screen average difference data satisfies a The fourth set of expressions DifAverage ∈ [AvgTg,

) and the count satisfies a fifth set of expressions ValidDifCounter∈[ValidDifCntTh,

), execute the identification program for the range of false touches on a stack of screens; (17) The range of false touches on a stack of screens satisfies a sixth set of expressions GroupArea∈[DifLevel,

), the first difference data of the frame containing at least one of the overlapping screen false-touch ranges is determined to be a valid frame; (18) A continuous frame number of the valid frame is greater than a first continuous frame number In the case of the threshold value, identifying that the foldable touch display device is in the folded state of the screen; and (19) marking a plurality of false touch coordinates corresponding to each of the difference data within the false touch range of the stack of screens; Wherein, in the screen folding recognition program, DifMax is a variable used to represent the maximum difference data, ThHi is the maximum threshold number, ThLo is a minimum threshold, and Difdata is used to represent the first difference data The variables, DifAverage is a variable used to represent the average difference data of the full screen, AvgTg is a threshold value of the average difference data, ValidDifCounter is a variable used to represent the count value of a valid difference data, ValidDifCntTh is the valid difference count Threshold, GroupArea is a variable used to represent the range of false touches of the overlay screen, and DifLevel is a variable used to represent the difference level. The method for recognizing false touches on overlapping screens for a foldable touch display device according to claim 2, wherein the program for recognizing the range of false touches on overlapping screens includes the following steps: (a) in the first difference data of the frame Selecting a difference coordinate as a starting coordinate, and simultaneously selecting four adjacent difference coordinates adjacent to the difference coordinate; (b) the first corresponding to any one of the four adjacent difference coordinates The difference data satisfies a seventh set operation formula DifData∈[DifAverage,

), take the adjacent difference coordinate as the new starting coordinate; (c) repeat this step (a) and this step (b) until the selected first difference data cannot satisfy the the seventh set of arithmetic expressions; and (d) recording a range surrounding the plurality of the starting coordinates as the overlapping screen false-touch range. The method for recognizing false touches on a foldable touch display device as claimed in claim 3, wherein after completing the screen lift-up recognition procedure, it is recognized that the foldable touch display device is in the screen-up state Afterwards, the indication of each of the mistouched coordinates is cleared. The method for recognizing false touches on a foldable touch display device according to claim 3, wherein the recognition procedure for covering up the screen includes the following steps: (31) in each of the second difference values The data satisfies an eighth set operation formula DifData

In the case of [ ^-∞ , ThLo/3), record the count of one of the plurality of second difference data that satisfies the condition in the second difference data of the frame; (32) in one of the second difference data of the frame The full-screen average difference number satisfies a ninth set of arithmetic expressions DifAverage

( ^-∞ , AvgTg), the number of counts satisfies a tenth set operation formula RdtNegCnt

( ^-∞ ,DifLevel) and one of the valid difference data count values of the second difference data of the frame satisfy an eleventh set operation formula ValidDifCounter

In the case of ( ^-∞ , DifLevel), the second difference data of the frame is determined as a valid frame; and (33) In the case where a continuous frame number of the valid frame is greater than a second continuous frame number threshold , identify that the foldable touch display device is in the screen-up state; wherein, in the screen-up recognition procedure, DifData is a variable used to represent the second difference data, ThLo is a minimum threshold, DifAverage is a variable used to represent the full-screen average difference data, AvgTg is a threshold of the average difference data, ValidDifCounter is a variable used to represent a valid difference data count value, RdtNegCnt is a variable used to represent the count amount , and DifLevel is a variable used to represent the difference level. According to the method for recognizing an accidental touch on a foldable touch display device according to claim 1, when a touch area of a touch panel of one of the touch display screens is identified as having the accidental touch in the overlapping screen In the touch mode, the control circuit defines the touch area as an untouched area. The method for recognizing false touches on a foldable touch display device as claimed in claim 1, wherein the control circuit is included in an electronic chip, and the electronic chip is selected from the group consisting of touch and display drivers. Any one of the group consisting of a Touch and Display Driver Integration (TDDI) chip and a touch detection chip. A foldable touch display device, which has two touch display screens and a control circuit, the two touch display screens can be folded in a way that the screens are close to the screen, and the control circuit is used to execute the requirements 1 to 7 The method for recognizing the false touch of a stack screen for a foldable touch display device according to any one of them. An information processing device has a foldable touch display device, the foldable touch display device has two touch display screens and a control circuit, the two touch display screens can be folded in a way that the screen is close to the screen, and the The control circuit is used for executing the method for recognizing the false touch of a stack screen for a foldable touch display device according to any one of claim 1 to claim 7. The information processing device according to claim 9, which is an electronic device selected from the group consisting of smart phones, tablet computers and notebook computers.

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